test: skip mod.rs files when checking for annotations

chore: bump version
docs: write documentation for enabling rust-analyzer
2025-12-26 00:11:49 +02:00 · 2022-04-14 11:19:54 +02:00 · 2022-04-14 11:16:00 +02:00 · 2022-04-14 11:15:04 +02:00 · 2022-04-14 11:09:27 +02:00 · 2022-04-14 10:46:23 +02:00
53 changed files with 751 additions and 324 deletions
--- a/.all-contributorsrc
+++ b/.all-contributorsrc
@@ -1,6 +1,6 @@
 {
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+    "AUTHORS.md"
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@@ -1002,6 +1002,150 @@
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--- a/AUTHORS.md
+++ b/AUTHORS.md
@@ -0,0 +1,175 @@
+## Authors
+
+This file lists the people that have contributed to this project.
+
+Excluded from this list are @carols10cents and @diannasoreil, the principal
+authors.
+
+<!-- ALL-CONTRIBUTORS-LIST:START - Do not remove or modify this section -->
+<!-- prettier-ignore-start -->
+<!-- markdownlint-disable -->
+<table>
+  <tr>
+    <td align="center"><a href="http://carol-nichols.com"><img src="https://avatars2.githubusercontent.com/u/193874?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Carol (Nichols &#124;&#124; Goulding)</b></sub></a><br /><a href="https://github.com/rust-lang/rustlings/commits?author=carols10cents" title="Code">💻</a> <a href="#content-carols10cents" title="Content">🖋</a></td>
+    <td align="center"><a href="https://twitter.com/QuietMisdreavus"><img src="https://avatars2.githubusercontent.com/u/5217170?v=4?s=100" width="100px;" alt=""/><br /><sub><b>QuietMisdreavus</b></sub></a><br /><a href="https://github.com/rust-lang/rustlings/commits?author=QuietMisdreavus" title="Code">💻</a> <a href="#content-QuietMisdreavus" title="Content">🖋</a></td>
+    <td align="center"><a href="https://github.com/robertlugg"><img src="https://avatars0.githubusercontent.com/u/6054540?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Robert M Lugg</b></sub></a><br /><a href="#content-robertlugg" title="Content">🖋</a></td>
+    <td align="center"><a href="https://hynek.me/about/"><img src="https://avatars3.githubusercontent.com/u/41240?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Hynek Schlawack</b></sub></a><br /><a href="https://github.com/rust-lang/rustlings/commits?author=hynek" title="Code">💻</a></td>
+    <td align="center"><a href="https://spacekookie.de"><img src="https://avatars0.githubusercontent.com/u/7669898?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Katharina Fey</b></sub></a><br /><a href="https://github.com/rust-lang/rustlings/commits?author=spacekookie" title="Code">💻</a></td>
+    <td align="center"><a href="https://github.com/lukabavdaz"><img src="https://avatars0.githubusercontent.com/u/9624558?v=4?s=100" width="100px;" alt=""/><br /><sub><b>lukabavdaz</b></sub></a><br /><a href="https://github.com/rust-lang/rustlings/commits?author=lukabavdaz" title="Code">💻</a> <a href="#content-lukabavdaz" title="Content">🖋</a></td>
+    <td align="center"><a href="http://vestera.as"><img src="https://avatars2.githubusercontent.com/u/4187449?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Erik Vesteraas</b></sub></a><br /><a href="https://github.com/rust-lang/rustlings/commits?author=evestera" title="Code">💻</a></td>
+    <td align="center"><a href="https://github.com/Delet0r"><img src="https://avatars1.githubusercontent.com/u/23195618?v=4?s=100" width="100px;" alt=""/><br /><sub><b>delet0r</b></sub></a><br /><a href="https://github.com/rust-lang/rustlings/commits?author=Delet0r" title="Code">💻</a></td>
+  </tr>
+  <tr>
+    <td align="center"><a href="http://phinary.ca"><img src="https://avatars1.githubusercontent.com/u/10522375?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Shaun Bennett</b></sub></a><br /><a href="https://github.com/rust-lang/rustlings/commits?author=shaunbennett" title="Code">💻</a></td>
+    <td align="center"><a href="https://github.com/abagshaw"><img src="https://avatars2.githubusercontent.com/u/8594541?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Andrew Bagshaw</b></sub></a><br /><a href="https://github.com/rust-lang/rustlings/commits?author=abagshaw" title="Code">💻</a></td>
+    <td align="center"><a href="https://ai6ua.net/"><img src="https://avatars2.githubusercontent.com/u/175578?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Kyle Isom</b></sub></a><br /><a href="https://github.com/rust-lang/rustlings/commits?author=kisom" title="Code">💻</a></td>
+    <td align="center"><a href="https://github.com/ColinPitrat"><img src="https://avatars3.githubusercontent.com/u/1541863?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Colin Pitrat</b></sub></a><br /><a href="https://github.com/rust-lang/rustlings/commits?author=ColinPitrat" title="Code">💻</a></td>
+    <td align="center"><a href="https://zacanger.com"><img src="https://avatars3.githubusercontent.com/u/12520493?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Zac Anger</b></sub></a><br /><a href="https://github.com/rust-lang/rustlings/commits?author=zacanger" title="Code">💻</a></td>
+    <td align="center"><a href="https://github.com/mgeier"><img src="https://avatars1.githubusercontent.com/u/705404?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Matthias Geier</b></sub></a><br /><a href="https://github.com/rust-lang/rustlings/commits?author=mgeier" title="Code">💻</a></td>
+    <td align="center"><a href="https://github.com/cjpearce"><img src="https://avatars1.githubusercontent.com/u/3453268?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Chris Pearce</b></sub></a><br /><a href="https://github.com/rust-lang/rustlings/commits?author=cjpearce" title="Code">💻</a></td>
+    <td align="center"><a href="https://yvan-sraka.github.io"><img src="https://avatars2.githubusercontent.com/u/705213?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Yvan Sraka</b></sub></a><br /><a href="https://github.com/rust-lang/rustlings/commits?author=yvan-sraka" title="Code">💻</a></td>
+  </tr>
+  <tr>
+    <td align="center"><a href="https://github.com/dendi239"><img src="https://avatars3.githubusercontent.com/u/16478650?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Denys Smirnov</b></sub></a><br /><a href="https://github.com/rust-lang/rustlings/commits?author=dendi239" title="Code">💻</a></td>
+    <td align="center"><a href="https://github.com/eddyp"><img src="https://avatars2.githubusercontent.com/u/123772?v=4?s=100" width="100px;" alt=""/><br /><sub><b>eddyp</b></sub></a><br /><a href="https://github.com/rust-lang/rustlings/commits?author=eddyp" title="Code">💻</a></td>
+    <td align="center"><a href="http://about.me/BrianKung"><img src="https://avatars1.githubusercontent.com/u/2836167?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Brian Kung</b></sub></a><br /><a href="https://github.com/rust-lang/rustlings/commits?author=briankung" title="Code">💻</a> <a href="#content-briankung" title="Content">🖋</a></td>
+    <td align="center"><a href="https://rcousineau.gitlab.io"><img src="https://avatars3.githubusercontent.com/u/281039?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Russell</b></sub></a><br /><a href="https://github.com/rust-lang/rustlings/commits?author=miller-time" title="Code">💻</a></td>
+    <td align="center"><a href="http://danwilhelm.com"><img src="https://avatars3.githubusercontent.com/u/6137185?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Dan Wilhelm</b></sub></a><br /><a href="https://github.com/rust-lang/rustlings/commits?author=danwilhelm" title="Documentation">📖</a></td>
+    <td align="center"><a href="https://github.com/Jesse-Cameron"><img src="https://avatars3.githubusercontent.com/u/3723654?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Jesse</b></sub></a><br /><a href="https://github.com/rust-lang/rustlings/commits?author=Jesse-Cameron" title="Code">💻</a> <a href="#content-Jesse-Cameron" title="Content">🖋</a></td>
+    <td align="center"><a href="https://github.com/MrFroop"><img src="https://avatars3.githubusercontent.com/u/196700?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Fredrik Jambrén</b></sub></a><br /><a href="https://github.com/rust-lang/rustlings/commits?author=MrFroop" title="Code">💻</a></td>
+    <td align="center"><a href="https://github.com/petemcfarlane"><img src="https://avatars3.githubusercontent.com/u/3472717?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Pete McFarlane</b></sub></a><br /><a href="#content-petemcfarlane" title="Content">🖋</a></td>
+  </tr>
+  <tr>
+    <td align="center"><a href="https://github.com/nkanderson"><img src="https://avatars0.githubusercontent.com/u/4128825?v=4?s=100" width="100px;" alt=""/><br /><sub><b>nkanderson</b></sub></a><br /><a href="https://github.com/rust-lang/rustlings/commits?author=nkanderson" title="Code">💻</a> <a href="#content-nkanderson" title="Content">🖋</a></td>
+    <td align="center"><a href="https://github.com/ajaxm"><img src="https://avatars0.githubusercontent.com/u/13360138?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Ajax M</b></sub></a><br /><a href="https://github.com/rust-lang/rustlings/commits?author=ajaxm" title="Documentation">📖</a></td>
+    <td align="center"><a href="https://dylnuge.com"><img src="https://avatars2.githubusercontent.com/u/118624?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Dylan Nugent</b></sub></a><br /><a href="#content-Dylnuge" title="Content">🖋</a></td>
+    <td align="center"><a href="https://github.com/vyaslav"><img src="https://avatars0.githubusercontent.com/u/1385427?v=4?s=100" width="100px;" alt=""/><br /><sub><b>vyaslav</b></sub></a><br /><a href="https://github.com/rust-lang/rustlings/commits?author=vyaslav" title="Code">💻</a> <a href="#content-vyaslav" title="Content">🖋</a></td>
+    <td align="center"><a href="https://join.sfxd.org"><img src="https://avatars1.githubusercontent.com/u/17297466?v=4?s=100" width="100px;" alt=""/><br /><sub><b>George</b></sub></a><br /><a href="https://github.com/rust-lang/rustlings/commits?author=gdoenlen" title="Code">💻</a></td>
+    <td align="center"><a href="https://github.com/nyxtom"><img src="https://avatars2.githubusercontent.com/u/222763?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Thomas Holloway</b></sub></a><br /><a href="https://github.com/rust-lang/rustlings/commits?author=nyxtom" title="Code">💻</a> <a href="#content-nyxtom" title="Content">🖋</a></td>
+    <td align="center"><a href="https://github.com/workingjubilee"><img src="https://avatars1.githubusercontent.com/u/46493976?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Jubilee</b></sub></a><br /><a href="https://github.com/rust-lang/rustlings/commits?author=workingjubilee" title="Code">💻</a></td>
+    <td align="center"><a href="https://github.com/WofWca"><img src="https://avatars1.githubusercontent.com/u/39462442?v=4?s=100" width="100px;" alt=""/><br /><sub><b>WofWca</b></sub></a><br /><a href="https://github.com/rust-lang/rustlings/commits?author=WofWca" title="Code">💻</a></td>
+  </tr>
+  <tr>
+    <td align="center"><a href="https://github.com/jrvidal"><img src="https://avatars0.githubusercontent.com/u/1636604?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Roberto Vidal</b></sub></a><br /><a href="https://github.com/rust-lang/rustlings/commits?author=jrvidal" title="Code">💻</a> <a href="https://github.com/rust-lang/rustlings/commits?author=jrvidal" title="Documentation">📖</a> <a href="#ideas-jrvidal" title="Ideas, Planning, & Feedback">🤔</a> <a href="#maintenance-jrvidal" title="Maintenance">🚧</a></td>
+    <td align="center"><a href="https://github.com/jensim"><img src="https://avatars0.githubusercontent.com/u/3663856?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Jens</b></sub></a><br /><a href="https://github.com/rust-lang/rustlings/commits?author=jensim" title="Documentation">📖</a></td>
+    <td align="center"><a href="http://rahatah.me/d"><img src="https://avatars3.githubusercontent.com/u/3174006?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Rahat Ahmed</b></sub></a><br /><a href="https://github.com/rust-lang/rustlings/commits?author=rahatarmanahmed" title="Documentation">📖</a></td>
+    <td align="center"><a href="https://github.com/AbdouSeck"><img src="https://avatars2.githubusercontent.com/u/6490055?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Abdou Seck</b></sub></a><br /><a href="https://github.com/rust-lang/rustlings/commits?author=AbdouSeck" title="Code">💻</a> <a href="#content-AbdouSeck" title="Content">🖋</a> <a href="https://github.com/rust-lang/rustlings/pulls?q=is%3Apr+reviewed-by%3AAbdouSeck" title="Reviewed Pull Requests">👀</a></td>
+    <td align="center"><a href="https://codehearts.com"><img src="https://avatars0.githubusercontent.com/u/2885412?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Katie</b></sub></a><br /><a href="https://github.com/rust-lang/rustlings/commits?author=codehearts" title="Code">💻</a></td>
+    <td align="center"><a href="https://github.com/Socratides"><img src="https://avatars3.githubusercontent.com/u/27732983?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Socrates</b></sub></a><br /><a href="https://github.com/rust-lang/rustlings/commits?author=Socratides" title="Documentation">📖</a></td>
+    <td align="center"><a href="https://github.com/gnodarse"><img src="https://avatars3.githubusercontent.com/u/46761795?v=4?s=100" width="100px;" alt=""/><br /><sub><b>gnodarse</b></sub></a><br /><a href="#content-gnodarse" title="Content">🖋</a></td>
+    <td align="center"><a href="https://github.com/harrisonmetz"><img src="https://avatars1.githubusercontent.com/u/7883408?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Harrison Metzger</b></sub></a><br /><a href="https://github.com/rust-lang/rustlings/commits?author=harrisonmetz" title="Code">💻</a></td>
+  </tr>
+  <tr>
+    <td align="center"><a href="https://github.com/TorbenJ"><img src="https://avatars2.githubusercontent.com/u/9077102?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Torben Jonas</b></sub></a><br /><a href="https://github.com/rust-lang/rustlings/commits?author=TorbenJ" title="Code">💻</a> <a href="#content-TorbenJ" title="Content">🖋</a></td>
+    <td align="center"><a href="http://paulbissex.com/"><img src="https://avatars0.githubusercontent.com/u/641?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Paul Bissex</b></sub></a><br /><a href="https://github.com/rust-lang/rustlings/commits?author=pbx" title="Documentation">📖</a></td>
+    <td align="center"><a href="https://github.com/sjmann"><img src="https://avatars0.githubusercontent.com/u/6589896?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Steven Mann</b></sub></a><br /><a href="https://github.com/rust-lang/rustlings/commits?author=sjmann" title="Code">💻</a> <a href="#content-sjmann" title="Content">🖋</a></td>
+    <td align="center"><a href="https://smmdb.net/"><img src="https://avatars2.githubusercontent.com/u/5855071?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Mario Reder</b></sub></a><br /><a href="https://github.com/rust-lang/rustlings/commits?author=Tarnadas" title="Code">💻</a> <a href="#content-Tarnadas" title="Content">🖋</a></td>
+    <td align="center"><a href="https://keybase.io/skim"><img src="https://avatars0.githubusercontent.com/u/47347?v=4?s=100" width="100px;" alt=""/><br /><sub><b>skim</b></sub></a><br /><a href="https://github.com/rust-lang/rustlings/commits?author=sl4m" title="Code">💻</a></td>
+    <td align="center"><a href="https://github.com/sanjaykdragon"><img src="https://avatars1.githubusercontent.com/u/10261698?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Sanjay K</b></sub></a><br /><a href="https://github.com/rust-lang/rustlings/commits?author=sanjaykdragon" title="Code">💻</a> <a href="#content-sanjaykdragon" title="Content">🖋</a></td>
+    <td align="center"><a href="http://www.rohanjain.in"><img src="https://avatars1.githubusercontent.com/u/343499?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Rohan Jain</b></sub></a><br /><a href="https://github.com/rust-lang/rustlings/commits?author=crodjer" title="Code">💻</a></td>
+    <td align="center"><a href="https://www.saidaspen.se"><img src="https://avatars1.githubusercontent.com/u/7727687?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Said Aspen</b></sub></a><br /><a href="https://github.com/rust-lang/rustlings/commits?author=saidaspen" title="Code">💻</a> <a href="#content-saidaspen" title="Content">🖋</a></td>
+  </tr>
+  <tr>
+    <td align="center"><a href="https://github.com/uce"><img src="https://avatars3.githubusercontent.com/u/1756620?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Ufuk Celebi</b></sub></a><br /><a href="https://github.com/rust-lang/rustlings/commits?author=uce" title="Code">💻</a></td>
+    <td align="center"><a href="https://github.com/lebedevsergey"><img src="https://avatars2.githubusercontent.com/u/7325764?v=4?s=100" width="100px;" alt=""/><br /><sub><b>lebedevsergey</b></sub></a><br /><a href="https://github.com/rust-lang/rustlings/commits?author=lebedevsergey" title="Documentation">📖</a></td>
+    <td align="center"><a href="https://github.com/avrong"><img src="https://avatars2.githubusercontent.com/u/6342851?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Aleksei Trifonov</b></sub></a><br /><a href="#content-avrong" title="Content">🖋</a></td>
+    <td align="center"><a href="https://drn.ie"><img src="https://avatars2.githubusercontent.com/u/411136?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Darren Meehan</b></sub></a><br /><a href="#content-Darrenmeehan" title="Content">🖋</a></td>
+    <td align="center"><a href="https://github.com/jihchi"><img src="https://avatars1.githubusercontent.com/u/87983?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Jihchi Lee</b></sub></a><br /><a href="#content-jihchi" title="Content">🖋</a></td>
+    <td align="center"><a href="https://github.com/bertonha"><img src="https://avatars3.githubusercontent.com/u/1225902?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Christofer Bertonha</b></sub></a><br /><a href="#content-bertonha" title="Content">🖋</a></td>
+    <td align="center"><a href="https://github.com/apatniv"><img src="https://avatars2.githubusercontent.com/u/22565917?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Vivek Bharath Akupatni</b></sub></a><br /><a href="https://github.com/rust-lang/rustlings/commits?author=apatniv" title="Code">💻</a> <a href="https://github.com/rust-lang/rustlings/commits?author=apatniv" title="Tests">⚠️</a></td>
+    <td align="center"><a href="https://github.com/DiD92"><img src="https://avatars3.githubusercontent.com/u/6002416?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Dídac Sementé Fernández</b></sub></a><br /><a href="https://github.com/rust-lang/rustlings/commits?author=DiD92" title="Code">💻</a> <a href="#content-DiD92" title="Content">🖋</a></td>
+  </tr>
+  <tr>
+    <td align="center"><a href="https://github.com/wrobstory"><img src="https://avatars3.githubusercontent.com/u/2601457?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Rob Story</b></sub></a><br /><a href="https://github.com/rust-lang/rustlings/commits?author=wrobstory" title="Code">💻</a></td>
+    <td align="center"><a href="https://github.com/siobhanjacobson"><img src="https://avatars2.githubusercontent.com/u/28983835?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Siobhan Jacobson</b></sub></a><br /><a href="https://github.com/rust-lang/rustlings/commits?author=siobhanjacobson" title="Code">💻</a></td>
+    <td align="center"><a href="https://www.linkedin.com/in/evancarroll/"><img src="https://avatars2.githubusercontent.com/u/19922?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Evan Carroll</b></sub></a><br /><a href="#content-EvanCarroll" title="Content">🖋</a></td>
+    <td align="center"><a href="http://www.jawaadmahmood.com"><img src="https://avatars3.githubusercontent.com/u/95606?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Jawaad Mahmood</b></sub></a><br /><a href="#content-jmahmood" title="Content">🖋</a></td>
+    <td align="center"><a href="https://github.com/GaurangTandon"><img src="https://avatars1.githubusercontent.com/u/6308683?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Gaurang Tandon</b></sub></a><br /><a href="#content-GaurangTandon" title="Content">🖋</a></td>
+    <td align="center"><a href="https://github.com/dev-cyprium"><img src="https://avatars1.githubusercontent.com/u/6002628?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Stefan Kupresak</b></sub></a><br /><a href="#content-dev-cyprium" title="Content">🖋</a></td>
+    <td align="center"><a href="https://github.com/greg-el"><img src="https://avatars3.githubusercontent.com/u/45019882?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Greg Leonard</b></sub></a><br /><a href="#content-greg-el" title="Content">🖋</a></td>
+    <td align="center"><a href="https://ryanpcmcquen.org"><img src="https://avatars3.githubusercontent.com/u/772937?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Ryan McQuen</b></sub></a><br /><a href="https://github.com/rust-lang/rustlings/commits?author=ryanpcmcquen" title="Code">💻</a></td>
+  </tr>
+  <tr>
+    <td align="center"><a href="https://github.com/AnnikaCodes"><img src="https://avatars3.githubusercontent.com/u/56906084?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Annika</b></sub></a><br /><a href="https://github.com/rust-lang/rustlings/pulls?q=is%3Apr+reviewed-by%3AAnnikaCodes" title="Reviewed Pull Requests">👀</a></td>
+    <td align="center"><a href="https://darnuria.eu"><img src="https://avatars1.githubusercontent.com/u/2827553?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Axel Viala</b></sub></a><br /><a href="https://github.com/rust-lang/rustlings/commits?author=darnuria" title="Code">💻</a></td>
+    <td align="center"><a href="https://sazid.github.io"><img src="https://avatars1.githubusercontent.com/u/2370167?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Mohammed Sazid Al Rashid</b></sub></a><br /><a href="#content-sazid" title="Content">🖋</a> <a href="https://github.com/rust-lang/rustlings/commits?author=sazid" title="Code">💻</a></td>
+    <td align="center"><a href="https://codingthemsoftly.com"><img src="https://avatars1.githubusercontent.com/u/17479099?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Caleb Webber</b></sub></a><br /><a href="#maintenance-seeplusplus" title="Maintenance">🚧</a></td>
+    <td align="center"><a href="https://github.com/pcn"><img src="https://avatars2.githubusercontent.com/u/1056756?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Peter N</b></sub></a><br /><a href="#maintenance-pcn" title="Maintenance">🚧</a></td>
+    <td align="center"><a href="https://github.com/seancad"><img src="https://avatars1.githubusercontent.com/u/47405611?v=4?s=100" width="100px;" alt=""/><br /><sub><b>seancad</b></sub></a><br /><a href="#maintenance-seancad" title="Maintenance">🚧</a></td>
+    <td align="center"><a href="http://willhayworth.com"><img src="https://avatars3.githubusercontent.com/u/181174?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Will Hayworth</b></sub></a><br /><a href="#content-wsh" title="Content">🖋</a></td>
+    <td align="center"><a href="https://github.com/chrizel"><img src="https://avatars3.githubusercontent.com/u/20802?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Christian Zeller</b></sub></a><br /><a href="#content-chrizel" title="Content">🖋</a></td>
+  </tr>
+  <tr>
+    <td align="center"><a href="https://github.com/jfchevrette"><img src="https://avatars.githubusercontent.com/u/3001?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Jean-Francois Chevrette</b></sub></a><br /><a href="#content-jfchevrette" title="Content">🖋</a> <a href="https://github.com/rust-lang/rustlings/commits?author=jfchevrette" title="Code">💻</a></td>
+    <td align="center"><a href="https://github.com/jbaber"><img src="https://avatars.githubusercontent.com/u/1908117?v=4?s=100" width="100px;" alt=""/><br /><sub><b>John Baber-Lucero</b></sub></a><br /><a href="#content-jbaber" title="Content">🖋</a></td>
+    <td align="center"><a href="https://github.com/tal-zvon"><img src="https://avatars.githubusercontent.com/u/3195851?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Tal</b></sub></a><br /><a href="#content-tal-zvon" title="Content">🖋</a></td>
+    <td align="center"><a href="https://github.com/apogeeoak"><img src="https://avatars.githubusercontent.com/u/59737221?v=4?s=100" width="100px;" alt=""/><br /><sub><b>apogeeoak</b></sub></a><br /><a href="#content-apogeeoak" title="Content">🖋</a> <a href="https://github.com/rust-lang/rustlings/commits?author=apogeeoak" title="Code">💻</a></td>
+    <td align="center"><a href="http://www.garfieldtech.com/"><img src="https://avatars.githubusercontent.com/u/254863?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Larry Garfield</b></sub></a><br /><a href="#content-Crell" title="Content">🖋</a></td>
+    <td align="center"><a href="https://github.com/circumspect"><img src="https://avatars.githubusercontent.com/u/40770208?v=4?s=100" width="100px;" alt=""/><br /><sub><b>circumspect</b></sub></a><br /><a href="#content-circumspect" title="Content">🖋</a></td>
+    <td align="center"><a href="https://github.com/cjwyett"><img src="https://avatars.githubusercontent.com/u/34195737?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Cyrus Wyett</b></sub></a><br /><a href="#content-cjwyett" title="Content">🖋</a></td>
+    <td align="center"><a href="https://github.com/cadolphs"><img src="https://avatars.githubusercontent.com/u/13894820?v=4?s=100" width="100px;" alt=""/><br /><sub><b>cadolphs</b></sub></a><br /><a href="https://github.com/rust-lang/rustlings/commits?author=cadolphs" title="Code">💻</a></td>
+  </tr>
+  <tr>
+    <td align="center"><a href="https://www.haveneer.com"><img src="https://avatars.githubusercontent.com/u/26146722?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Pascal H.</b></sub></a><br /><a href="#content-hpwxf" title="Content">🖋</a></td>
+    <td align="center"><a href="https://twitter.com/chapeupreto"><img src="https://avatars.githubusercontent.com/u/834048?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Rod Elias</b></sub></a><br /><a href="#content-chapeupreto" title="Content">🖋</a></td>
+    <td align="center"><a href="https://github.com/blerchy"><img src="https://avatars.githubusercontent.com/u/2555355?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Matt Lebl</b></sub></a><br /><a href="https://github.com/rust-lang/rustlings/commits?author=blerchy" title="Code">💻</a></td>
+    <td align="center"><a href="http://flakolefluk.dev"><img src="https://avatars.githubusercontent.com/u/11986564?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Ignacio Le Fluk</b></sub></a><br /><a href="#content-flakolefluk" title="Content">🖋</a></td>
+    <td align="center"><a href="https://github.com/tlyu"><img src="https://avatars.githubusercontent.com/u/431873?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Taylor Yu</b></sub></a><br /><a href="https://github.com/rust-lang/rustlings/commits?author=tlyu" title="Code">💻</a> <a href="#content-tlyu" title="Content">🖋</a></td>
+    <td align="center"><a href="https://zerotask.github.io"><img src="https://avatars.githubusercontent.com/u/20150243?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Patrick Hintermayer</b></sub></a><br /><a href="https://github.com/rust-lang/rustlings/commits?author=Zerotask" title="Code">💻</a></td>
+    <td align="center"><a href="https://petkopavlovski.com/"><img src="https://avatars.githubusercontent.com/u/32264020?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Pete Pavlovski</b></sub></a><br /><a href="#content-arthas168" title="Content">🖋</a></td>
+    <td align="center"><a href="https://github.com/k12ish"><img src="https://avatars.githubusercontent.com/u/45272873?v=4?s=100" width="100px;" alt=""/><br /><sub><b>k12ish</b></sub></a><br /><a href="#content-k12ish" title="Content">🖋</a></td>
+  </tr>
+  <tr>
+    <td align="center"><a href="https://github.com/hongshaoyang"><img src="https://avatars.githubusercontent.com/u/19281800?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Shao Yang Hong</b></sub></a><br /><a href="#content-hongshaoyang" title="Content">🖋</a></td>
+    <td align="center"><a href="https://github.com/bmacer"><img src="https://avatars.githubusercontent.com/u/13931806?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Brandon Macer</b></sub></a><br /><a href="#content-bmacer" title="Content">🖋</a></td>
+    <td align="center"><a href="https://github.com/stoiandan"><img src="https://avatars.githubusercontent.com/u/10388612?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Stoian Dan</b></sub></a><br /><a href="#content-stoiandan" title="Content">🖋</a></td>
+    <td align="center"><a href="https://about.me/pjdelport"><img src="https://avatars.githubusercontent.com/u/630271?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Pi Delport</b></sub></a><br /><a href="#content-PiDelport" title="Content">🖋</a></td>
+    <td align="center"><a href="https://github.com/sateeshkumarb"><img src="https://avatars.githubusercontent.com/u/429263?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Sateesh </b></sub></a><br /><a href="https://github.com/rust-lang/rustlings/commits?author=sateeshkumarb" title="Code">💻</a> <a href="#content-sateeshkumarb" title="Content">🖋</a></td>
+    <td align="center"><a href="https://github.com/kayuapi"><img src="https://avatars.githubusercontent.com/u/10304328?v=4?s=100" width="100px;" alt=""/><br /><sub><b>ZC</b></sub></a><br /><a href="#content-kayuapi" title="Content">🖋</a></td>
+    <td align="center"><a href="https://github.com/hyperparabolic"><img src="https://avatars.githubusercontent.com/u/12348474?v=4?s=100" width="100px;" alt=""/><br /><sub><b>hyperparabolic</b></sub></a><br /><a href="https://github.com/rust-lang/rustlings/commits?author=hyperparabolic" title="Code">💻</a></td>
+    <td align="center"><a href="https://www.net4visions.at"><img src="https://avatars.githubusercontent.com/u/5228369?v=4?s=100" width="100px;" alt=""/><br /><sub><b>arlecchino</b></sub></a><br /><a href="https://github.com/rust-lang/rustlings/commits?author=kolbma" title="Documentation">📖</a></td>
+  </tr>
+  <tr>
+    <td align="center"><a href="https://richthofen.io/"><img src="https://avatars.githubusercontent.com/u/7576730?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Richthofen</b></sub></a><br /><a href="https://github.com/rust-lang/rustlings/commits?author=jazzplato" title="Code">💻</a></td>
+    <td align="center"><a href="https://github.com/cseltol"><img src="https://avatars.githubusercontent.com/u/64264529?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Ivan Nerazumov</b></sub></a><br /><a href="https://github.com/rust-lang/rustlings/commits?author=cseltol" title="Documentation">📖</a></td>
+    <td align="center"><a href="https://github.com/lauralindzey"><img src="https://avatars.githubusercontent.com/u/65185744?v=4?s=100" width="100px;" alt=""/><br /><sub><b>lauralindzey</b></sub></a><br /><a href="https://github.com/rust-lang/rustlings/commits?author=lauralindzey" title="Documentation">📖</a></td>
+    <td align="center"><a href="https://github.com/sinharaksh1t"><img src="https://avatars.githubusercontent.com/u/28585848?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Rakshit Sinha</b></sub></a><br /><a href="#content-sinharaksh1t" title="Content">🖋</a></td>
+    <td align="center"><a href="https://github.com/dbednar230"><img src="https://avatars.githubusercontent.com/u/54457902?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Damian</b></sub></a><br /><a href="#content-dbednar230" title="Content">🖋</a></td>
+    <td align="center"><a href="https://benarmstead.co.uk"><img src="https://avatars.githubusercontent.com/u/70973680?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Ben Armstead</b></sub></a><br /><a href="https://github.com/rust-lang/rustlings/commits?author=benarmstead" title="Code">💻</a></td>
+    <td align="center"><a href="https://github.com/anuk909"><img src="https://avatars.githubusercontent.com/u/34924662?v=4?s=100" width="100px;" alt=""/><br /><sub><b>anuk909</b></sub></a><br /><a href="#content-anuk909" title="Content">🖋</a> <a href="https://github.com/rust-lang/rustlings/commits?author=anuk909" title="Code">💻</a></td>
+    <td align="center"><a href="https://granddaifuku.com/"><img src="https://avatars.githubusercontent.com/u/49578068?v=4?s=100" width="100px;" alt=""/><br /><sub><b>granddaifuku</b></sub></a><br /><a href="#content-granddaifuku" title="Content">🖋</a></td>
+  </tr>
+  <tr>
+    <td align="center"><a href="https://weilet.me"><img src="https://avatars.githubusercontent.com/u/32561597?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Weilet</b></sub></a><br /><a href="#content-Weilet" title="Content">🖋</a></td>
+    <td align="center"><a href="https://github.com/Millione"><img src="https://avatars.githubusercontent.com/u/38575932?v=4?s=100" width="100px;" alt=""/><br /><sub><b>LIU JIE</b></sub></a><br /><a href="#content-Millione" title="Content">🖋</a></td>
+    <td align="center"><a href="https://github.com/abusch"><img src="https://avatars.githubusercontent.com/u/506344?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Antoine Büsch</b></sub></a><br /><a href="https://github.com/rust-lang/rustlings/commits?author=abusch" title="Code">💻</a></td>
+    <td align="center"><a href="https://frogtd.com/"><img src="https://avatars.githubusercontent.com/u/31412003?v=4?s=100" width="100px;" alt=""/><br /><sub><b>frogtd</b></sub></a><br /><a href="#content-frogtd" title="Content">🖋</a></td>
+    <td align="center"><a href="https://github.com/EmisonLu"><img src="https://avatars.githubusercontent.com/u/54395432?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Zhenghao Lu</b></sub></a><br /><a href="#content-EmisonLu" title="Content">🖋</a></td>
+    <td align="center"><a href="https://soundtrackyourbrand.com"><img src="https://avatars.githubusercontent.com/u/762956?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Fredrik Enestad</b></sub></a><br /><a href="#content-fredr" title="Content">🖋</a></td>
+    <td align="center"><a href="http://xuesong.pydevops.com"><img src="https://avatars.githubusercontent.com/u/18476085?v=4?s=100" width="100px;" alt=""/><br /><sub><b>xuesong</b></sub></a><br /><a href="#content-xuesongbj" title="Content">🖋</a></td>
+    <td align="center"><a href="https://github.com/MpdWalsh"><img src="https://avatars.githubusercontent.com/u/48160144?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Michael Walsh</b></sub></a><br /><a href="https://github.com/rust-lang/rustlings/commits?author=MpdWalsh" title="Code">💻</a></td>
+  </tr>
+  <tr>
+    <td align="center"><a href="https://github.com/alirezaghey"><img src="https://avatars.githubusercontent.com/u/26653424?v=4?s=100" width="100px;" alt=""/><br /><sub><b>alirezaghey</b></sub></a><br /><a href="#content-alirezaghey" title="Content">🖋</a></td>
+    <td align="center"><a href="https://github.com/frvannes16"><img src="https://avatars.githubusercontent.com/u/3188475?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Franklin van Nes</b></sub></a><br /><a href="https://github.com/rust-lang/rustlings/commits?author=frvannes16" title="Code">💻</a></td>
+    <td align="center"><a href="https://nekonako.github.io"><img src="https://avatars.githubusercontent.com/u/46141275?v=4?s=100" width="100px;" alt=""/><br /><sub><b>nekonako</b></sub></a><br /><a href="https://github.com/rust-lang/rustlings/commits?author=nekonako" title="Code">💻</a></td>
+    <td align="center"><a href="https://github.com/tan-zx"><img src="https://avatars.githubusercontent.com/u/67887489?v=4?s=100" width="100px;" alt=""/><br /><sub><b>ZX</b></sub></a><br /><a href="#content-tan-zx" title="Content">🖋</a></td>
+    <td align="center"><a href="https://github.com/sundevilyang"><img src="https://avatars.githubusercontent.com/u/1499214?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Yang Wen</b></sub></a><br /><a href="#content-sundevilyang" title="Content">🖋</a></td>
+    <td align="center"><a href="https://brandon-high.com"><img src="https://avatars.githubusercontent.com/u/759848?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Brandon High</b></sub></a><br /><a href="https://github.com/rust-lang/rustlings/commits?author=highb" title="Documentation">📖</a></td>
+    <td align="center"><a href="https://github.com/x-hgg-x"><img src="https://avatars.githubusercontent.com/u/39058530?v=4?s=100" width="100px;" alt=""/><br /><sub><b>x-hgg-x</b></sub></a><br /><a href="https://github.com/rust-lang/rustlings/commits?author=x-hgg-x" title="Code">💻</a></td>
+    <td align="center"><a href="http://kisaragieffective.github.io"><img src="https://avatars.githubusercontent.com/u/48310258?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Kisaragi</b></sub></a><br /><a href="https://github.com/rust-lang/rustlings/commits?author=KisaragiEffective" title="Documentation">📖</a></td>
+  </tr>
+  <tr>
+    <td align="center"><a href="https://github.com/Kallu-A"><img src="https://avatars.githubusercontent.com/u/73198738?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Lucas Aries</b></sub></a><br /><a href="#content-Kallu-A" title="Content">🖋</a></td>
+    <td align="center"><a href="https://github.com/ragreenburg"><img src="https://avatars.githubusercontent.com/u/24358100?v=4?s=100" width="100px;" alt=""/><br /><sub><b>ragreenburg</b></sub></a><br /><a href="#content-ragreenburg" title="Content">🖋</a></td>
+    <td align="center"><a href="https://github.com/stevenfukase"><img src="https://avatars.githubusercontent.com/u/66785624?v=4?s=100" width="100px;" alt=""/><br /><sub><b>stevenfukase</b></sub></a><br /><a href="#content-stevenfukase" title="Content">🖋</a></td>
+    <td align="center"><a href="https://github.com/J-S-Kim"><img src="https://avatars.githubusercontent.com/u/17569303?v=4?s=100" width="100px;" alt=""/><br /><sub><b>J-S-Kim</b></sub></a><br /><a href="#content-J-S-Kim" title="Content">🖋</a></td>
+  </tr>
+</table>
+
+<!-- markdownlint-restore -->
+<!-- prettier-ignore-end -->
+
+<!-- ALL-CONTRIBUTORS-LIST:END -->
+
+This project follows the [all-contributors](https://github.com/all-contributors/all-contributors) specification. Contributions of any kind welcome!
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,46 @@
+<a name="4.7.0"></a>
+## 4.7.0 (2022-04-14)
+
+
+#### Features
+
+*   Add move_semantics6.rs exercise (#908) ([3f0e1303](https://github.com/rust-lang/rustlings/commit/3f0e1303e0b3bf3fecc0baced3c8b8a37f83c184))
+* **intro:**  Add intro section. ([21c9f441](https://github.com/rust-lang/rustlings/commit/21c9f44168394e08338fd470b5f49b1fd235986f))
+* Include exercises folder in the project structure behind a feature, enabling rust-analyzer to work (#917) ([179a75a6](https://github.com/rust-lang/rustlings/commit/179a75a68d03ac9518dec2297fb17f91a4fc506b))
+
+#### Bug Fixes
+
+* Fix a few spelling mistakes ([1c0fe3cb](https://github.com/rust-lang/rustlings/commit/1c0fe3cbcca85f90b3985985b8e265ee872a2ab2))
+* **cli:**
+  * Move long text strings into constants. ([f78c4802](https://github.com/rust-lang/rustlings/commit/f78c48020830d7900dd8d81f355606581670446d))
+  * Replace `filter_map()` with `find_map()` ([9b27e8d](https://github.com/rust-lang/rustlings/commit/9b27e8d993ca20232fe38a412750c3f845a83b65))
+* **clippy1:**
+  *  Set clippy::float_cmp lint to deny (#907) ([71a06044](https://github.com/rust-lang/rustlings/commit/71a06044e6a96ff756dc31d7b0ed665ae4badb57))
+  *  Updated code to test correctness clippy lint with approx_constant lint rule ([f2650de3](https://github.com/rust-lang/rustlings/commit/f2650de369810867d2763e935ac0963c32ec420e))
+* **errors1:**
+  * Add a comment to make the purpose more clear (#486) ([cbcde345](https://github.com/rust-lang/rustlings/commit/cbcde345409c3e550112e449242848eaa3391bb6))
+  * Don't modify tests (#958) ([60bb7cc](https://github.com/rust-lang/rustlings/commit/60bb7cc3931d21d3986ad52b2b302e632a93831c))
+* **errors6:** Remove existing answer code ([43d0623](https://github.com/rust-lang/rustlings/commit/43d0623086edbc46fe896ba59c7afa22c3da9f7a))
+* **functions5:**  Remove wrong new line and small English improvements (#885) ([8ef4869b](https://github.com/rust-lang/rustlings/commit/8ef4869b264094e5a9b50452b4534823a9df19c3))
+* **install:**  protect path with whitespaces using quotes and stop at the first error ([d114847f](https://github.com/rust-lang/rustlings/commit/d114847f256c5f571c0b4c87e04b04bce3435509))
+* **intro1:**  Add compiler error explanation. ([9b8de655](https://github.com/rust-lang/rustlings/commit/9b8de65525a5576b78cf0c8e4098cdd34296338f))
+* **iterators1:**  reorder TODO steps ([0bd7a063](https://github.com/rust-lang/rustlings/commit/0bd7a0631a17a9d69af5746795a30efc9cf64e6e))
+* **move_semantics2:**  Add comment ([89650f80](https://github.com/rust-lang/rustlings/commit/89650f808af23a32c9a2c6d46592b77547a6a464))
+* **move_semantics5:**  correct typo (#857) ([46c28d5c](https://github.com/rust-lang/rustlings/commit/46c28d5cef3d8446b5a356b19d8dbc725f91a3a0))
+* **quiz1:**  update to say quiz covers "If" ([1622e8c1](https://github.com/rust-lang/rustlings/commit/1622e8c198d89739765c915203efff0091bdeb78))
+* **structs3:**
+  * Add a hint for panic (#608) ([4f7ff5d9](https://github.com/rust-lang/rustlings/commit/4f7ff5d9c7b2d8b045194c1a9469d37e30257c4a))
+  * remove redundant 'return' (#852) ([bf33829d](https://github.com/rust-lang/rustlings/commit/bf33829da240375d086f96267fc2e02fa6b07001))
+  * Assigned value to `cents_per_gram` in test ([d1ee2da](https://github.com/rust-lang/rustlings/commit/d1ee2daf14f19105e6db3f9c610f44293d688532))
+* **structs3.rs:**  assigned value to cents_per_gram in test ([d1ee2daf](https://github.com/rust-lang/rustlings/commit/d1ee2daf14f19105e6db3f9c610f44293d688532))
+* **traits1:**  rename test functions to snake case (#854) ([1663a16e](https://github.com/rust-lang/rustlings/commit/1663a16eade6ca646b6ed061735f7982434d530d))
+
+#### Documentation improvements
+
+* Add hints on how to get GCC installed (#741) ([bc56861](https://github.com/rust-lang/rustlings/commit/bc5686174463ad6f4f6b824b0e9b97c3039d4886))
+* Fix some code blocks that were not highlighted ([17f9d74](https://github.com/rust-lang/rustlings/commit/17f9d7429ccd133a72e815fb5618e0ce79560929))
+
+
 <a name="4.6.0"></a>
 ## 4.6.0 (2021-09-25)

--- a/Cargo.lock
+++ b/Cargo.lock
@@ -541,7 +541,7 @@ checksum = "f497285884f3fcff424ffc933e56d7cbca511def0c9831a7f9b5f6153e3cc89b"

 [[package]]
 name = "rustlings"
-version = "4.6.0"
+version = "4.7.0"
 dependencies = [
 "argh",
 "assert_cmd",
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,8 +1,8 @@
 [package]
 name = "rustlings"
-version = "4.6.0"
-authors = ["anastasie <ana@ana.st>", "Carol (Nichols || Goulding) <carol.nichols@gmail.com>"]
-edition = "2018"
+version = "4.7.0"
+authors = ["mokou <mokou@fastmail.com>", "Carol (Nichols || Goulding) <carol.nichols@gmail.com>"]
+edition = "2021"

 [dependencies]
 argh = "0.1.4"
@@ -11,7 +11,7 @@ console = "0.7.7"
 notify = "4.0.15"
 toml = "0.4.10"
 regex = "1.1.6"
-serde = {version = "1.0.10", features = ["derive"]}
+serde = { version = "1.0.10", features = ["derive"] }

 [[bin]]
 name = "rustlings"
@@ -21,3 +21,6 @@ path = "src/main.rs"
 assert_cmd = "0.11.0"
 predicates = "1.0.1"
 glob = "0.3.0"
+
+[features]
+exercises = []
--- a/README.md
+++ b/README.md
@@ -1,7 +1,3 @@
-<!-- ALL-CONTRIBUTORS-BADGE:START - Do not remove or modify this section -->
-[![All Contributors](https://img.shields.io/badge/all_contributors-108-orange.svg?style=flat-square)](#contributors-)
-<!-- ALL-CONTRIBUTORS-BADGE:END -->
-
 # rustlings 🦀❤️

 Greetings and welcome to `rustlings`. This project contains small exercises to get you used to reading and writing Rust code. This includes reading and responding to compiler messages!
@@ -16,6 +12,7 @@ Alternatively, for a first-time Rust learner, there are several other resources:
 ## Getting Started

 _Note: If you're on MacOS, make sure you've installed Xcode and its developer tools by typing `xcode-select --install`._
+_Note: If you're on Linux, make sure you've installed gcc. Deb: `sudo apt install gcc`. Yum: `sudo yum -y install gcc`._

 You will need to have Rust installed. You can get it by visiting https://rustup.rs. This'll also install Cargo, Rust's package/project manager.

@@ -35,13 +32,13 @@ This will install Rustlings and give you access to the `rustlings` command. Run

 In PowerShell (Run as Administrator), set `ExecutionPolicy` to `RemoteSigned`:

-```ps
+```ps1
 Set-ExecutionPolicy -ExecutionPolicy RemoteSigned -Scope CurrentUser
 ```

 Then, you can run:

-```ps
+```ps1
 Start-BitsTransfer -Source https://git.io/JTL5v -Destination $env:TMP/install_rustlings.ps1; Unblock-File $env:TMP/install_rustlings.ps1; Invoke-Expression $env:TMP/install_rustlings.ps1
 ```

@@ -67,6 +64,7 @@ cargo install --force --path .
 ```

 If there are installation errors, ensure that your toolchain is up to date. For the latest, run:
+
 ```bash
 rustup update
 ```
@@ -106,17 +104,18 @@ rustlings run next
 In case you get stuck, you can run the following command to get a hint for your
 exercise:

-``` bash
+```bash
 rustlings hint myExercise1
 ```

 You can also get the hint for the next unsolved exercise with the following command:

-``` bash
+```bash
 rustlings hint next
 ```

 To check your progress, you can run the following command:
+
 ```bash
 rustlings list
 ```
@@ -125,6 +124,27 @@ rustlings list

 After every couple of sections, there will be a quiz that'll test your knowledge on a bunch of sections at once. These quizzes are found in `exercises/quizN.rs`.

+## Enabling `rust-analyzer`
+
+`rust-analyzer` support is provided, but it depends on your editor
+whether it's enabled by default. (RLS support is not provided)
+
+To enable `rust-analyzer`, you'll need to make Cargo build the project
+with the `exercises` feature, which will automatically include the `exercises/`
+subfolder in the project. The easiest way to do this is to tell your editor to
+build the project with all features (the equivalent of `cargo build --all-features`).
+For specific editor instructions:
+
+- **VSCode**: Add a `.vscode/settings.json` file with the following:
+```json
+{
+    "rust-analyzer.cargo.features": ["exercises"]
+}
+```
+- **IntelliJ-based Editors**: Using the Rust plugin, everything should work
+    by default.
+- _Missing your editor? Feel free to contribute more instructions!_
+
 ## Continuing On

 Once you've completed Rustlings, put your new knowledge to good use! Continue practicing your Rust skills by building your own projects, contributing to Rustlings, or finding other open-source projects to contribute to.
@@ -134,14 +154,14 @@ Once you've completed Rustlings, put your new knowledge to good use! Continue pr
 If you want to remove Rustlings from your system, there's two steps. First, you'll need to remove the exercises folder that the install script created
 for you:

-``` bash
+```bash
 rm -rf rustlings # or your custom folder name, if you chose and or renamed it
 ```

 Second, since Rustlings got installed via `cargo install`, it's only reasonable to assume that you can also remove it using Cargo, and
 exactly that is the case. Run `cargo uninstall` to remove the `rustlings` binary:

-``` bash
+```bash
 cargo uninstall rustlings
 ```

@@ -171,153 +191,4 @@ See [CONTRIBUTING.md](./CONTRIBUTING.md).

 ## Contributors ✨

-Thanks goes to these wonderful people ([emoji key](https://allcontributors.org/docs/en/emoji-key)):
-
-<!-- ALL-CONTRIBUTORS-LIST:START - Do not remove or modify this section -->
-<!-- prettier-ignore-start -->
-<!-- markdownlint-disable -->
-<table>
-  <tr>
-    <td align="center"><a href="http://carol-nichols.com"><img src="https://avatars2.githubusercontent.com/u/193874?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Carol (Nichols &#124;&#124; Goulding)</b></sub></a><br /><a href="https://github.com/rust-lang/rustlings/commits?author=carols10cents" title="Code">💻</a> <a href="#content-carols10cents" title="Content">🖋</a></td>
-    <td align="center"><a href="https://twitter.com/QuietMisdreavus"><img src="https://avatars2.githubusercontent.com/u/5217170?v=4?s=100" width="100px;" alt=""/><br /><sub><b>QuietMisdreavus</b></sub></a><br /><a href="https://github.com/rust-lang/rustlings/commits?author=QuietMisdreavus" title="Code">💻</a> <a href="#content-QuietMisdreavus" title="Content">🖋</a></td>
-    <td align="center"><a href="https://github.com/robertlugg"><img src="https://avatars0.githubusercontent.com/u/6054540?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Robert M Lugg</b></sub></a><br /><a href="#content-robertlugg" title="Content">🖋</a></td>
-    <td align="center"><a href="https://hynek.me/about/"><img src="https://avatars3.githubusercontent.com/u/41240?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Hynek Schlawack</b></sub></a><br /><a href="https://github.com/rust-lang/rustlings/commits?author=hynek" title="Code">💻</a></td>
-    <td align="center"><a href="https://spacekookie.de"><img src="https://avatars0.githubusercontent.com/u/7669898?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Katharina Fey</b></sub></a><br /><a href="https://github.com/rust-lang/rustlings/commits?author=spacekookie" title="Code">💻</a></td>
-    <td align="center"><a href="https://github.com/lukabavdaz"><img src="https://avatars0.githubusercontent.com/u/9624558?v=4?s=100" width="100px;" alt=""/><br /><sub><b>lukabavdaz</b></sub></a><br /><a href="https://github.com/rust-lang/rustlings/commits?author=lukabavdaz" title="Code">💻</a> <a href="#content-lukabavdaz" title="Content">🖋</a></td>
-    <td align="center"><a href="http://vestera.as"><img src="https://avatars2.githubusercontent.com/u/4187449?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Erik Vesteraas</b></sub></a><br /><a href="https://github.com/rust-lang/rustlings/commits?author=evestera" title="Code">💻</a></td>
-    <td align="center"><a href="https://github.com/Delet0r"><img src="https://avatars1.githubusercontent.com/u/23195618?v=4?s=100" width="100px;" alt=""/><br /><sub><b>delet0r</b></sub></a><br /><a href="https://github.com/rust-lang/rustlings/commits?author=Delet0r" title="Code">💻</a></td>
-  </tr>
-  <tr>
-    <td align="center"><a href="http://phinary.ca"><img src="https://avatars1.githubusercontent.com/u/10522375?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Shaun Bennett</b></sub></a><br /><a href="https://github.com/rust-lang/rustlings/commits?author=shaunbennett" title="Code">💻</a></td>
-    <td align="center"><a href="https://github.com/abagshaw"><img src="https://avatars2.githubusercontent.com/u/8594541?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Andrew Bagshaw</b></sub></a><br /><a href="https://github.com/rust-lang/rustlings/commits?author=abagshaw" title="Code">💻</a></td>
-    <td align="center"><a href="https://ai6ua.net/"><img src="https://avatars2.githubusercontent.com/u/175578?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Kyle Isom</b></sub></a><br /><a href="https://github.com/rust-lang/rustlings/commits?author=kisom" title="Code">💻</a></td>
-    <td align="center"><a href="https://github.com/ColinPitrat"><img src="https://avatars3.githubusercontent.com/u/1541863?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Colin Pitrat</b></sub></a><br /><a href="https://github.com/rust-lang/rustlings/commits?author=ColinPitrat" title="Code">💻</a></td>
-    <td align="center"><a href="https://zacanger.com"><img src="https://avatars3.githubusercontent.com/u/12520493?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Zac Anger</b></sub></a><br /><a href="https://github.com/rust-lang/rustlings/commits?author=zacanger" title="Code">💻</a></td>
-    <td align="center"><a href="https://github.com/mgeier"><img src="https://avatars1.githubusercontent.com/u/705404?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Matthias Geier</b></sub></a><br /><a href="https://github.com/rust-lang/rustlings/commits?author=mgeier" title="Code">💻</a></td>
-    <td align="center"><a href="https://github.com/cjpearce"><img src="https://avatars1.githubusercontent.com/u/3453268?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Chris Pearce</b></sub></a><br /><a href="https://github.com/rust-lang/rustlings/commits?author=cjpearce" title="Code">💻</a></td>
-    <td align="center"><a href="https://yvan-sraka.github.io"><img src="https://avatars2.githubusercontent.com/u/705213?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Yvan Sraka</b></sub></a><br /><a href="https://github.com/rust-lang/rustlings/commits?author=yvan-sraka" title="Code">💻</a></td>
-  </tr>
-  <tr>
-    <td align="center"><a href="https://github.com/dendi239"><img src="https://avatars3.githubusercontent.com/u/16478650?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Denys Smirnov</b></sub></a><br /><a href="https://github.com/rust-lang/rustlings/commits?author=dendi239" title="Code">💻</a></td>
-    <td align="center"><a href="https://github.com/eddyp"><img src="https://avatars2.githubusercontent.com/u/123772?v=4?s=100" width="100px;" alt=""/><br /><sub><b>eddyp</b></sub></a><br /><a href="https://github.com/rust-lang/rustlings/commits?author=eddyp" title="Code">💻</a></td>
-    <td align="center"><a href="http://about.me/BrianKung"><img src="https://avatars1.githubusercontent.com/u/2836167?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Brian Kung</b></sub></a><br /><a href="https://github.com/rust-lang/rustlings/commits?author=briankung" title="Code">💻</a> <a href="#content-briankung" title="Content">🖋</a></td>
-    <td align="center"><a href="https://rcousineau.gitlab.io"><img src="https://avatars3.githubusercontent.com/u/281039?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Russell</b></sub></a><br /><a href="https://github.com/rust-lang/rustlings/commits?author=miller-time" title="Code">💻</a></td>
-    <td align="center"><a href="http://danwilhelm.com"><img src="https://avatars3.githubusercontent.com/u/6137185?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Dan Wilhelm</b></sub></a><br /><a href="https://github.com/rust-lang/rustlings/commits?author=danwilhelm" title="Documentation">📖</a></td>
-    <td align="center"><a href="https://github.com/Jesse-Cameron"><img src="https://avatars3.githubusercontent.com/u/3723654?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Jesse</b></sub></a><br /><a href="https://github.com/rust-lang/rustlings/commits?author=Jesse-Cameron" title="Code">💻</a> <a href="#content-Jesse-Cameron" title="Content">🖋</a></td>
-    <td align="center"><a href="https://github.com/MrFroop"><img src="https://avatars3.githubusercontent.com/u/196700?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Fredrik Jambrén</b></sub></a><br /><a href="https://github.com/rust-lang/rustlings/commits?author=MrFroop" title="Code">💻</a></td>
-    <td align="center"><a href="https://github.com/petemcfarlane"><img src="https://avatars3.githubusercontent.com/u/3472717?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Pete McFarlane</b></sub></a><br /><a href="#content-petemcfarlane" title="Content">🖋</a></td>
-  </tr>
-  <tr>
-    <td align="center"><a href="https://github.com/nkanderson"><img src="https://avatars0.githubusercontent.com/u/4128825?v=4?s=100" width="100px;" alt=""/><br /><sub><b>nkanderson</b></sub></a><br /><a href="https://github.com/rust-lang/rustlings/commits?author=nkanderson" title="Code">💻</a> <a href="#content-nkanderson" title="Content">🖋</a></td>
-    <td align="center"><a href="https://github.com/ajaxm"><img src="https://avatars0.githubusercontent.com/u/13360138?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Ajax M</b></sub></a><br /><a href="https://github.com/rust-lang/rustlings/commits?author=ajaxm" title="Documentation">📖</a></td>
-    <td align="center"><a href="https://dylnuge.com"><img src="https://avatars2.githubusercontent.com/u/118624?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Dylan Nugent</b></sub></a><br /><a href="#content-Dylnuge" title="Content">🖋</a></td>
-    <td align="center"><a href="https://github.com/vyaslav"><img src="https://avatars0.githubusercontent.com/u/1385427?v=4?s=100" width="100px;" alt=""/><br /><sub><b>vyaslav</b></sub></a><br /><a href="https://github.com/rust-lang/rustlings/commits?author=vyaslav" title="Code">💻</a> <a href="#content-vyaslav" title="Content">🖋</a></td>
-    <td align="center"><a href="https://join.sfxd.org"><img src="https://avatars1.githubusercontent.com/u/17297466?v=4?s=100" width="100px;" alt=""/><br /><sub><b>George</b></sub></a><br /><a href="https://github.com/rust-lang/rustlings/commits?author=gdoenlen" title="Code">💻</a></td>
-    <td align="center"><a href="https://github.com/nyxtom"><img src="https://avatars2.githubusercontent.com/u/222763?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Thomas Holloway</b></sub></a><br /><a href="https://github.com/rust-lang/rustlings/commits?author=nyxtom" title="Code">💻</a> <a href="#content-nyxtom" title="Content">🖋</a></td>
-    <td align="center"><a href="https://github.com/workingjubilee"><img src="https://avatars1.githubusercontent.com/u/46493976?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Jubilee</b></sub></a><br /><a href="https://github.com/rust-lang/rustlings/commits?author=workingjubilee" title="Code">💻</a></td>
-    <td align="center"><a href="https://github.com/WofWca"><img src="https://avatars1.githubusercontent.com/u/39462442?v=4?s=100" width="100px;" alt=""/><br /><sub><b>WofWca</b></sub></a><br /><a href="https://github.com/rust-lang/rustlings/commits?author=WofWca" title="Code">💻</a></td>
-  </tr>
-  <tr>
-    <td align="center"><a href="https://github.com/jrvidal"><img src="https://avatars0.githubusercontent.com/u/1636604?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Roberto Vidal</b></sub></a><br /><a href="https://github.com/rust-lang/rustlings/commits?author=jrvidal" title="Code">💻</a> <a href="https://github.com/rust-lang/rustlings/commits?author=jrvidal" title="Documentation">📖</a> <a href="#ideas-jrvidal" title="Ideas, Planning, & Feedback">🤔</a> <a href="#maintenance-jrvidal" title="Maintenance">🚧</a></td>
-    <td align="center"><a href="https://github.com/jensim"><img src="https://avatars0.githubusercontent.com/u/3663856?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Jens</b></sub></a><br /><a href="https://github.com/rust-lang/rustlings/commits?author=jensim" title="Documentation">📖</a></td>
-    <td align="center"><a href="http://rahatah.me/d"><img src="https://avatars3.githubusercontent.com/u/3174006?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Rahat Ahmed</b></sub></a><br /><a href="https://github.com/rust-lang/rustlings/commits?author=rahatarmanahmed" title="Documentation">📖</a></td>
-    <td align="center"><a href="https://github.com/AbdouSeck"><img src="https://avatars2.githubusercontent.com/u/6490055?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Abdou Seck</b></sub></a><br /><a href="https://github.com/rust-lang/rustlings/commits?author=AbdouSeck" title="Code">💻</a> <a href="#content-AbdouSeck" title="Content">🖋</a> <a href="https://github.com/rust-lang/rustlings/pulls?q=is%3Apr+reviewed-by%3AAbdouSeck" title="Reviewed Pull Requests">👀</a></td>
-    <td align="center"><a href="https://codehearts.com"><img src="https://avatars0.githubusercontent.com/u/2885412?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Katie</b></sub></a><br /><a href="https://github.com/rust-lang/rustlings/commits?author=codehearts" title="Code">💻</a></td>
-    <td align="center"><a href="https://github.com/Socratides"><img src="https://avatars3.githubusercontent.com/u/27732983?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Socrates</b></sub></a><br /><a href="https://github.com/rust-lang/rustlings/commits?author=Socratides" title="Documentation">📖</a></td>
-    <td align="center"><a href="https://github.com/gnodarse"><img src="https://avatars3.githubusercontent.com/u/46761795?v=4?s=100" width="100px;" alt=""/><br /><sub><b>gnodarse</b></sub></a><br /><a href="#content-gnodarse" title="Content">🖋</a></td>
-    <td align="center"><a href="https://github.com/harrisonmetz"><img src="https://avatars1.githubusercontent.com/u/7883408?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Harrison Metzger</b></sub></a><br /><a href="https://github.com/rust-lang/rustlings/commits?author=harrisonmetz" title="Code">💻</a></td>
-  </tr>
-  <tr>
-    <td align="center"><a href="https://github.com/TorbenJ"><img src="https://avatars2.githubusercontent.com/u/9077102?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Torben Jonas</b></sub></a><br /><a href="https://github.com/rust-lang/rustlings/commits?author=TorbenJ" title="Code">💻</a> <a href="#content-TorbenJ" title="Content">🖋</a></td>
-    <td align="center"><a href="http://paulbissex.com/"><img src="https://avatars0.githubusercontent.com/u/641?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Paul Bissex</b></sub></a><br /><a href="https://github.com/rust-lang/rustlings/commits?author=pbx" title="Documentation">📖</a></td>
-    <td align="center"><a href="https://github.com/sjmann"><img src="https://avatars0.githubusercontent.com/u/6589896?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Steven Mann</b></sub></a><br /><a href="https://github.com/rust-lang/rustlings/commits?author=sjmann" title="Code">💻</a> <a href="#content-sjmann" title="Content">🖋</a></td>
-    <td align="center"><a href="https://smmdb.net/"><img src="https://avatars2.githubusercontent.com/u/5855071?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Mario Reder</b></sub></a><br /><a href="https://github.com/rust-lang/rustlings/commits?author=Tarnadas" title="Code">💻</a> <a href="#content-Tarnadas" title="Content">🖋</a></td>
-    <td align="center"><a href="https://keybase.io/skim"><img src="https://avatars0.githubusercontent.com/u/47347?v=4?s=100" width="100px;" alt=""/><br /><sub><b>skim</b></sub></a><br /><a href="https://github.com/rust-lang/rustlings/commits?author=sl4m" title="Code">💻</a></td>
-    <td align="center"><a href="https://github.com/sanjaykdragon"><img src="https://avatars1.githubusercontent.com/u/10261698?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Sanjay K</b></sub></a><br /><a href="https://github.com/rust-lang/rustlings/commits?author=sanjaykdragon" title="Code">💻</a> <a href="#content-sanjaykdragon" title="Content">🖋</a></td>
-    <td align="center"><a href="http://www.rohanjain.in"><img src="https://avatars1.githubusercontent.com/u/343499?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Rohan Jain</b></sub></a><br /><a href="https://github.com/rust-lang/rustlings/commits?author=crodjer" title="Code">💻</a></td>
-    <td align="center"><a href="https://www.saidaspen.se"><img src="https://avatars1.githubusercontent.com/u/7727687?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Said Aspen</b></sub></a><br /><a href="https://github.com/rust-lang/rustlings/commits?author=saidaspen" title="Code">💻</a> <a href="#content-saidaspen" title="Content">🖋</a></td>
-  </tr>
-  <tr>
-    <td align="center"><a href="https://github.com/uce"><img src="https://avatars3.githubusercontent.com/u/1756620?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Ufuk Celebi</b></sub></a><br /><a href="https://github.com/rust-lang/rustlings/commits?author=uce" title="Code">💻</a></td>
-    <td align="center"><a href="https://github.com/lebedevsergey"><img src="https://avatars2.githubusercontent.com/u/7325764?v=4?s=100" width="100px;" alt=""/><br /><sub><b>lebedevsergey</b></sub></a><br /><a href="https://github.com/rust-lang/rustlings/commits?author=lebedevsergey" title="Documentation">📖</a></td>
-    <td align="center"><a href="https://github.com/avrong"><img src="https://avatars2.githubusercontent.com/u/6342851?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Aleksei Trifonov</b></sub></a><br /><a href="#content-avrong" title="Content">🖋</a></td>
-    <td align="center"><a href="https://drn.ie"><img src="https://avatars2.githubusercontent.com/u/411136?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Darren Meehan</b></sub></a><br /><a href="#content-Darrenmeehan" title="Content">🖋</a></td>
-    <td align="center"><a href="https://github.com/jihchi"><img src="https://avatars1.githubusercontent.com/u/87983?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Jihchi Lee</b></sub></a><br /><a href="#content-jihchi" title="Content">🖋</a></td>
-    <td align="center"><a href="https://github.com/bertonha"><img src="https://avatars3.githubusercontent.com/u/1225902?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Christofer Bertonha</b></sub></a><br /><a href="#content-bertonha" title="Content">🖋</a></td>
-    <td align="center"><a href="https://github.com/apatniv"><img src="https://avatars2.githubusercontent.com/u/22565917?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Vivek Bharath Akupatni</b></sub></a><br /><a href="https://github.com/rust-lang/rustlings/commits?author=apatniv" title="Code">💻</a> <a href="https://github.com/rust-lang/rustlings/commits?author=apatniv" title="Tests">⚠️</a></td>
-    <td align="center"><a href="https://github.com/DiD92"><img src="https://avatars3.githubusercontent.com/u/6002416?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Dídac Sementé Fernández</b></sub></a><br /><a href="https://github.com/rust-lang/rustlings/commits?author=DiD92" title="Code">💻</a> <a href="#content-DiD92" title="Content">🖋</a></td>
-  </tr>
-  <tr>
-    <td align="center"><a href="https://github.com/wrobstory"><img src="https://avatars3.githubusercontent.com/u/2601457?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Rob Story</b></sub></a><br /><a href="https://github.com/rust-lang/rustlings/commits?author=wrobstory" title="Code">💻</a></td>
-    <td align="center"><a href="https://github.com/siobhanjacobson"><img src="https://avatars2.githubusercontent.com/u/28983835?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Siobhan Jacobson</b></sub></a><br /><a href="https://github.com/rust-lang/rustlings/commits?author=siobhanjacobson" title="Code">💻</a></td>
-    <td align="center"><a href="https://www.linkedin.com/in/evancarroll/"><img src="https://avatars2.githubusercontent.com/u/19922?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Evan Carroll</b></sub></a><br /><a href="#content-EvanCarroll" title="Content">🖋</a></td>
-    <td align="center"><a href="http://www.jawaadmahmood.com"><img src="https://avatars3.githubusercontent.com/u/95606?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Jawaad Mahmood</b></sub></a><br /><a href="#content-jmahmood" title="Content">🖋</a></td>
-    <td align="center"><a href="https://github.com/GaurangTandon"><img src="https://avatars1.githubusercontent.com/u/6308683?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Gaurang Tandon</b></sub></a><br /><a href="#content-GaurangTandon" title="Content">🖋</a></td>
-    <td align="center"><a href="https://github.com/dev-cyprium"><img src="https://avatars1.githubusercontent.com/u/6002628?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Stefan Kupresak</b></sub></a><br /><a href="#content-dev-cyprium" title="Content">🖋</a></td>
-    <td align="center"><a href="https://github.com/greg-el"><img src="https://avatars3.githubusercontent.com/u/45019882?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Greg Leonard</b></sub></a><br /><a href="#content-greg-el" title="Content">🖋</a></td>
-    <td align="center"><a href="https://ryanpcmcquen.org"><img src="https://avatars3.githubusercontent.com/u/772937?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Ryan McQuen</b></sub></a><br /><a href="https://github.com/rust-lang/rustlings/commits?author=ryanpcmcquen" title="Code">💻</a></td>
-  </tr>
-  <tr>
-    <td align="center"><a href="https://github.com/AnnikaCodes"><img src="https://avatars3.githubusercontent.com/u/56906084?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Annika</b></sub></a><br /><a href="https://github.com/rust-lang/rustlings/pulls?q=is%3Apr+reviewed-by%3AAnnikaCodes" title="Reviewed Pull Requests">👀</a></td>
-    <td align="center"><a href="https://darnuria.eu"><img src="https://avatars1.githubusercontent.com/u/2827553?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Axel Viala</b></sub></a><br /><a href="https://github.com/rust-lang/rustlings/commits?author=darnuria" title="Code">💻</a></td>
-    <td align="center"><a href="https://sazid.github.io"><img src="https://avatars1.githubusercontent.com/u/2370167?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Mohammed Sazid Al Rashid</b></sub></a><br /><a href="#content-sazid" title="Content">🖋</a> <a href="https://github.com/rust-lang/rustlings/commits?author=sazid" title="Code">💻</a></td>
-    <td align="center"><a href="https://codingthemsoftly.com"><img src="https://avatars1.githubusercontent.com/u/17479099?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Caleb Webber</b></sub></a><br /><a href="#maintenance-seeplusplus" title="Maintenance">🚧</a></td>
-    <td align="center"><a href="https://github.com/pcn"><img src="https://avatars2.githubusercontent.com/u/1056756?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Peter N</b></sub></a><br /><a href="#maintenance-pcn" title="Maintenance">🚧</a></td>
-    <td align="center"><a href="https://github.com/seancad"><img src="https://avatars1.githubusercontent.com/u/47405611?v=4?s=100" width="100px;" alt=""/><br /><sub><b>seancad</b></sub></a><br /><a href="#maintenance-seancad" title="Maintenance">🚧</a></td>
-    <td align="center"><a href="http://willhayworth.com"><img src="https://avatars3.githubusercontent.com/u/181174?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Will Hayworth</b></sub></a><br /><a href="#content-wsh" title="Content">🖋</a></td>
-    <td align="center"><a href="https://github.com/chrizel"><img src="https://avatars3.githubusercontent.com/u/20802?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Christian Zeller</b></sub></a><br /><a href="#content-chrizel" title="Content">🖋</a></td>
-  </tr>
-  <tr>
-    <td align="center"><a href="https://github.com/jfchevrette"><img src="https://avatars.githubusercontent.com/u/3001?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Jean-Francois Chevrette</b></sub></a><br /><a href="#content-jfchevrette" title="Content">🖋</a> <a href="https://github.com/rust-lang/rustlings/commits?author=jfchevrette" title="Code">💻</a></td>
-    <td align="center"><a href="https://github.com/jbaber"><img src="https://avatars.githubusercontent.com/u/1908117?v=4?s=100" width="100px;" alt=""/><br /><sub><b>John Baber-Lucero</b></sub></a><br /><a href="#content-jbaber" title="Content">🖋</a></td>
-    <td align="center"><a href="https://github.com/tal-zvon"><img src="https://avatars.githubusercontent.com/u/3195851?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Tal</b></sub></a><br /><a href="#content-tal-zvon" title="Content">🖋</a></td>
-    <td align="center"><a href="https://github.com/apogeeoak"><img src="https://avatars.githubusercontent.com/u/59737221?v=4?s=100" width="100px;" alt=""/><br /><sub><b>apogeeoak</b></sub></a><br /><a href="#content-apogeeoak" title="Content">🖋</a> <a href="https://github.com/rust-lang/rustlings/commits?author=apogeeoak" title="Code">💻</a></td>
-    <td align="center"><a href="http://www.garfieldtech.com/"><img src="https://avatars.githubusercontent.com/u/254863?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Larry Garfield</b></sub></a><br /><a href="#content-Crell" title="Content">🖋</a></td>
-    <td align="center"><a href="https://github.com/circumspect"><img src="https://avatars.githubusercontent.com/u/40770208?v=4?s=100" width="100px;" alt=""/><br /><sub><b>circumspect</b></sub></a><br /><a href="#content-circumspect" title="Content">🖋</a></td>
-    <td align="center"><a href="https://github.com/cjwyett"><img src="https://avatars.githubusercontent.com/u/34195737?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Cyrus Wyett</b></sub></a><br /><a href="#content-cjwyett" title="Content">🖋</a></td>
-    <td align="center"><a href="https://github.com/cadolphs"><img src="https://avatars.githubusercontent.com/u/13894820?v=4?s=100" width="100px;" alt=""/><br /><sub><b>cadolphs</b></sub></a><br /><a href="https://github.com/rust-lang/rustlings/commits?author=cadolphs" title="Code">💻</a></td>
-  </tr>
-  <tr>
-    <td align="center"><a href="https://www.haveneer.com"><img src="https://avatars.githubusercontent.com/u/26146722?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Pascal H.</b></sub></a><br /><a href="#content-hpwxf" title="Content">🖋</a></td>
-    <td align="center"><a href="https://twitter.com/chapeupreto"><img src="https://avatars.githubusercontent.com/u/834048?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Rod Elias</b></sub></a><br /><a href="#content-chapeupreto" title="Content">🖋</a></td>
-    <td align="center"><a href="https://github.com/blerchy"><img src="https://avatars.githubusercontent.com/u/2555355?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Matt Lebl</b></sub></a><br /><a href="https://github.com/rust-lang/rustlings/commits?author=blerchy" title="Code">💻</a></td>
-    <td align="center"><a href="http://flakolefluk.dev"><img src="https://avatars.githubusercontent.com/u/11986564?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Ignacio Le Fluk</b></sub></a><br /><a href="#content-flakolefluk" title="Content">🖋</a></td>
-    <td align="center"><a href="https://github.com/tlyu"><img src="https://avatars.githubusercontent.com/u/431873?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Taylor Yu</b></sub></a><br /><a href="https://github.com/rust-lang/rustlings/commits?author=tlyu" title="Code">💻</a> <a href="#content-tlyu" title="Content">🖋</a></td>
-    <td align="center"><a href="https://zerotask.github.io"><img src="https://avatars.githubusercontent.com/u/20150243?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Patrick Hintermayer</b></sub></a><br /><a href="https://github.com/rust-lang/rustlings/commits?author=Zerotask" title="Code">💻</a></td>
-    <td align="center"><a href="https://petkopavlovski.com/"><img src="https://avatars.githubusercontent.com/u/32264020?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Pete Pavlovski</b></sub></a><br /><a href="#content-arthas168" title="Content">🖋</a></td>
-    <td align="center"><a href="https://github.com/k12ish"><img src="https://avatars.githubusercontent.com/u/45272873?v=4?s=100" width="100px;" alt=""/><br /><sub><b>k12ish</b></sub></a><br /><a href="#content-k12ish" title="Content">🖋</a></td>
-  </tr>
-  <tr>
-    <td align="center"><a href="https://github.com/hongshaoyang"><img src="https://avatars.githubusercontent.com/u/19281800?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Shao Yang Hong</b></sub></a><br /><a href="#content-hongshaoyang" title="Content">🖋</a></td>
-    <td align="center"><a href="https://github.com/bmacer"><img src="https://avatars.githubusercontent.com/u/13931806?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Brandon Macer</b></sub></a><br /><a href="#content-bmacer" title="Content">🖋</a></td>
-    <td align="center"><a href="https://github.com/stoiandan"><img src="https://avatars.githubusercontent.com/u/10388612?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Stoian Dan</b></sub></a><br /><a href="#content-stoiandan" title="Content">🖋</a></td>
-    <td align="center"><a href="https://about.me/pjdelport"><img src="https://avatars.githubusercontent.com/u/630271?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Pi Delport</b></sub></a><br /><a href="#content-PiDelport" title="Content">🖋</a></td>
-    <td align="center"><a href="https://github.com/sateeshkumarb"><img src="https://avatars.githubusercontent.com/u/429263?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Sateesh </b></sub></a><br /><a href="https://github.com/rust-lang/rustlings/commits?author=sateeshkumarb" title="Code">💻</a> <a href="#content-sateeshkumarb" title="Content">🖋</a></td>
-    <td align="center"><a href="https://github.com/kayuapi"><img src="https://avatars.githubusercontent.com/u/10304328?v=4?s=100" width="100px;" alt=""/><br /><sub><b>ZC</b></sub></a><br /><a href="#content-kayuapi" title="Content">🖋</a></td>
-    <td align="center"><a href="https://github.com/hyperparabolic"><img src="https://avatars.githubusercontent.com/u/12348474?v=4?s=100" width="100px;" alt=""/><br /><sub><b>hyperparabolic</b></sub></a><br /><a href="https://github.com/rust-lang/rustlings/commits?author=hyperparabolic" title="Code">💻</a></td>
-    <td align="center"><a href="https://www.net4visions.at"><img src="https://avatars.githubusercontent.com/u/5228369?v=4?s=100" width="100px;" alt=""/><br /><sub><b>arlecchino</b></sub></a><br /><a href="https://github.com/rust-lang/rustlings/commits?author=kolbma" title="Documentation">📖</a></td>
-  </tr>
-  <tr>
-    <td align="center"><a href="https://richthofen.io/"><img src="https://avatars.githubusercontent.com/u/7576730?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Richthofen</b></sub></a><br /><a href="https://github.com/rust-lang/rustlings/commits?author=jazzplato" title="Code">💻</a></td>
-    <td align="center"><a href="https://github.com/cseltol"><img src="https://avatars.githubusercontent.com/u/64264529?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Ivan Nerazumov</b></sub></a><br /><a href="https://github.com/rust-lang/rustlings/commits?author=cseltol" title="Documentation">📖</a></td>
-    <td align="center"><a href="https://github.com/lauralindzey"><img src="https://avatars.githubusercontent.com/u/65185744?v=4?s=100" width="100px;" alt=""/><br /><sub><b>lauralindzey</b></sub></a><br /><a href="https://github.com/rust-lang/rustlings/commits?author=lauralindzey" title="Documentation">📖</a></td>
-    <td align="center"><a href="https://github.com/sinharaksh1t"><img src="https://avatars.githubusercontent.com/u/28585848?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Rakshit Sinha</b></sub></a><br /><a href="#content-sinharaksh1t" title="Content">🖋</a></td>
-    <td align="center"><a href="https://github.com/dbednar230"><img src="https://avatars.githubusercontent.com/u/54457902?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Damian</b></sub></a><br /><a href="#content-dbednar230" title="Content">🖋</a></td>
-    <td align="center"><a href="https://benarmstead.co.uk"><img src="https://avatars.githubusercontent.com/u/70973680?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Ben Armstead</b></sub></a><br /><a href="https://github.com/rust-lang/rustlings/commits?author=benarmstead" title="Code">💻</a></td>
-    <td align="center"><a href="https://github.com/anuk909"><img src="https://avatars.githubusercontent.com/u/34924662?v=4?s=100" width="100px;" alt=""/><br /><sub><b>anuk909</b></sub></a><br /><a href="#content-anuk909" title="Content">🖋</a> <a href="https://github.com/rust-lang/rustlings/commits?author=anuk909" title="Code">💻</a></td>
-    <td align="center"><a href="https://granddaifuku.com/"><img src="https://avatars.githubusercontent.com/u/49578068?v=4?s=100" width="100px;" alt=""/><br /><sub><b>granddaifuku</b></sub></a><br /><a href="#content-granddaifuku" title="Content">🖋</a></td>
-  </tr>
-  <tr>
-    <td align="center"><a href="https://weilet.me"><img src="https://avatars.githubusercontent.com/u/32561597?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Weilet</b></sub></a><br /><a href="#content-Weilet" title="Content">🖋</a></td>
-    <td align="center"><a href="https://github.com/Millione"><img src="https://avatars.githubusercontent.com/u/38575932?v=4?s=100" width="100px;" alt=""/><br /><sub><b>LIU JIE</b></sub></a><br /><a href="#content-Millione" title="Content">🖋</a></td>
-    <td align="center"><a href="https://github.com/abusch"><img src="https://avatars.githubusercontent.com/u/506344?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Antoine Büsch</b></sub></a><br /><a href="https://github.com/rust-lang/rustlings/commits?author=abusch" title="Code">💻</a></td>
-    <td align="center"><a href="https://frogtd.com/"><img src="https://avatars.githubusercontent.com/u/31412003?v=4?s=100" width="100px;" alt=""/><br /><sub><b>frogtd</b></sub></a><br /><a href="#content-frogtd" title="Content">🖋</a></td>
-  </tr>
-</table>
-
-<!-- markdownlint-restore -->
-<!-- prettier-ignore-end -->
-
-<!-- ALL-CONTRIBUTORS-LIST:END -->
-
-This project follows the [all-contributors](https://github.com/all-contributors/all-contributors) specification. Contributions of any kind welcome!
+Thanks goes to the wonderful people listed in [AUTHORS.md](./AUTHORS.md) 🎉
--- a/default_out.txt
+++ b/default_out.txt
@@ -1,25 +0,0 @@
-Thanks for installing Rustlings!
-
-Is this your first time? Don't worry, Rustlings was made for beginners! We are
-going to teach you a lot of things about Rust, but before we can get
-started, here's a couple of notes about how Rustlings operates:
-
-1. The central concept behind Rustlings is that you solve exercises. These
-   exercises usually have some sort of syntax error in them, which will cause
-   them to fail compilation or testing. Sometimes there's a logic error instead
-   of a syntax error. No matter what error, it's your job to find it and fix it!
-   You'll know when you fixed it because then, the exercise will compile and
-   Rustlings will be able to move on to the next exercise.
-2. If you run Rustlings in watch mode (which we recommend), it'll automatically
-   start with the first exercise. Don't get confused by an error message popping
-   up as soon as you run Rustlings! This is part of the exercise that you're
-   supposed to solve, so open the exercise file in an editor and start your
-   detective work!
-3. If you're stuck on an exercise, there is a helpful hint you can view by typing
-   'hint' (in watch mode), or running `rustlings hint myexercise`.
-4. If an exercise doesn't make sense to you, feel free to open an issue on GitHub!
-   (https://github.com/rust-lang/rustlings/issues/new). We look at every issue,
-   and sometimes, other learners do too so you can help each other out!
-
-Got all that? Great! To get started, run `rustlings watch` in order to get the first
-exercise. Make sure to have your editor open!
--- a/exercises/advanced_errors/advanced_errs2.rs
+++ b/exercises/advanced_errors/advanced_errs2.rs
@@ -64,7 +64,6 @@ impl Display for ParseClimateError {
        match self {
            NoCity => write!(f, "no city name"),
            ParseFloat(e) => write!(f, "error parsing temperature: {}", e),
-            _ => write!(f, "unhandled error!"),
        }
    }
 }
--- a/exercises/advanced_errors/mod.rs
+++ b/exercises/advanced_errors/mod.rs
@@ -0,0 +1,2 @@
+mod advanced_errs1;
+mod advanced_errs2;
--- a/exercises/clippy/clippy1.rs
+++ b/exercises/clippy/clippy1.rs
@@ -8,10 +8,16 @@

 // I AM NOT DONE

+use std::f32;
+
 fn main() {
-    let x = 1.2331f64;
-    let y = 1.2332f64;
-    if y != x {
-        println!("Success!");
-    }
+    let pi = 3.14f32;
+    let radius = 5.00f32;
+
+    let area = pi * f32::powi(radius, 2);
+
+    println!(
+        "The area of a circle with radius {:.2} is {:.5}!",
+        radius, area
+    )
 }
--- a/exercises/clippy/mod.rs
+++ b/exercises/clippy/mod.rs
@@ -0,0 +1,2 @@
+mod clippy1;
+mod clippy2;
--- a/exercises/collections/mod.rs
+++ b/exercises/collections/mod.rs
@@ -0,0 +1,4 @@
+mod hashmap1;
+mod hashmap2;
+mod vec1;
+mod vec2;
--- a/exercises/conversions/mod.rs
+++ b/exercises/conversions/mod.rs
@@ -0,0 +1,5 @@
+mod as_ref_mut;
+mod from_into;
+mod from_str;
+mod try_from_into;
+mod using_as;
--- a/exercises/enums/mod.rs
+++ b/exercises/enums/mod.rs
@@ -0,0 +1,3 @@
+mod enums1;
+mod enums2;
+mod enums3;
--- a/exercises/error_handling/errors1.rs
+++ b/exercises/error_handling/errors1.rs
@@ -1,9 +1,8 @@
 // errors1.rs
 // This function refuses to generate text to be printed on a nametag if
 // you pass it an empty string. It'd be nicer if it explained what the problem
-// was, instead of just sometimes returning `None`. The 2nd test currently
-// does not compile or pass, but it illustrates the behavior we would like
-// this function to have.
+// was, instead of just sometimes returning `None`. Thankfully, Rust has a similar
+// construct to `Option` that can be used to express error conditions. Let's use it!
 // Execute `rustlings hint errors1` for hints!

 // I AM NOT DONE
@@ -21,14 +20,11 @@ pub fn generate_nametag_text(name: String) -> Option<String> {
 mod tests {
    use super::*;

-    // This test passes initially if you comment out the 2nd test.
-    // You'll need to update what this test expects when you change
-    // the function under test!
    #[test]
    fn generates_nametag_text_for_a_nonempty_name() {
        assert_eq!(
            generate_nametag_text("Beyoncé".into()),
-            Some("Hi! My name is Beyoncé".into())
+            Ok("Hi! My name is Beyoncé".into())
        );
    }

@@ -36,6 +32,7 @@ mod tests {
    fn explains_why_generating_nametag_text_fails() {
        assert_eq!(
            generate_nametag_text("".into()),
+            // Don't change this line
            Err("`name` was empty; it must be nonempty.".into())
        );
    }
--- a/exercises/error_handling/errors6.rs
+++ b/exercises/error_handling/errors6.rs
@@ -20,9 +20,6 @@ enum ParsePosNonzeroError {
 }

 impl ParsePosNonzeroError {
-    fn from_creation(err: CreationError) -> ParsePosNonzeroError {
-        ParsePosNonzeroError::Creation(err)
-    }
    // TODO: add another error conversion function here.
 }

--- a/exercises/error_handling/mod.rs
+++ b/exercises/error_handling/mod.rs
@@ -0,0 +1,6 @@
+mod errors1;
+mod errors2;
+mod errors3;
+mod errors4;
+mod errors5;
+mod errors6;
--- a/exercises/functions/mod.rs
+++ b/exercises/functions/mod.rs
@@ -0,0 +1,5 @@
+mod functions1;
+mod functions2;
+mod functions3;
+mod functions4;
+mod functions5;
--- a/exercises/generics/mod.rs
+++ b/exercises/generics/mod.rs
@@ -0,0 +1,3 @@
+mod generics1;
+mod generics2;
+mod generics3;
--- a/exercises/if/mod.rs
+++ b/exercises/if/mod.rs
@@ -0,0 +1,2 @@
+mod if1;
+mod if2;
--- a/exercises/intro/README.md
+++ b/exercises/intro/README.md
@@ -0,0 +1,8 @@
+# Intro
+
+Rust uses the `print!` and `println!` macros to print text to the console.
+
+## Further information
+
+- [Hello World](https://doc.rust-lang.org/rust-by-example/hello.html)
+- [Formatted print](https://doc.rust-lang.org/rust-by-example/hello/print.html)
--- a/exercises/intro/intro1.rs
+++ b/exercises/intro/intro1.rs
@@ -0,0 +1,23 @@
+// intro1.rs
+// About this `I AM NOT DONE` thing:
+// We sometimes encourage you to keep trying things on a given exercise, even
+// after you already figured it out. If you got everything working and feel
+// ready for the next exercise, remove the `I AM NOT DONE` comment below.
+// Execute the command `rustlings hint intro1` for a hint.
+
+// I AM NOT DONE
+
+fn main() {
+    println!("Hello and");
+    println!(r#"       welcome to...                      "#);
+    println!(r#"                 _   _ _                  "#);
+    println!(r#"  _ __ _   _ ___| |_| (_)_ __   __ _ ___  "#);
+    println!(r#" | '__| | | / __| __| | | '_ \ / _` / __| "#);
+    println!(r#" | |  | |_| \__ \ |_| | | | | | (_| \__ \ "#);
+    println!(r#" |_|   \__,_|___/\__|_|_|_| |_|\__, |___/ "#);
+    println!(r#"                               |___/      "#);
+    println!();
+    println!("This exercise compiles successfully. The remaining exercises contain a compiler");
+    println!("or logic error. The central concept behind Rustlings is to fix these errors and");
+    println!("solve the exercises. Good luck!");
+}
--- a/exercises/intro/intro2.rs
+++ b/exercises/intro/intro2.rs
@@ -0,0 +1,9 @@
+// intro2.rs
+// Make the code print a greeting to the world.
+// Execute `rustlings hint intro2` for a hint.
+
+// I AM NOT DONE
+
+fn main() {
+    println!("Hello {}!");
+}
--- a/exercises/intro/mod.rs
+++ b/exercises/intro/mod.rs
@@ -0,0 +1,2 @@
+mod intro1;
+mod intro2;
--- a/exercises/macros/mod.rs
+++ b/exercises/macros/mod.rs
@@ -0,0 +1,4 @@
+mod macros1;
+mod macros2;
+mod macros3;
+mod macros4;
--- a/exercises/mod.rs
+++ b/exercises/mod.rs
@@ -0,0 +1,26 @@
+mod advanced_errors;
+mod clippy;
+mod collections;
+mod conversions;
+mod enums;
+mod error_handling;
+mod functions;
+mod generics;
+mod r#if;
+mod intro;
+mod macros;
+mod modules;
+mod move_semantics;
+mod option;
+mod primitive_types;
+mod quiz1;
+mod quiz2;
+mod quiz3;
+mod quiz4;
+mod standard_library_types;
+mod strings;
+mod structs;
+mod tests;
+mod threads;
+mod traits;
+mod variables;
--- a/exercises/modules/mod.rs
+++ b/exercises/modules/mod.rs
@@ -0,0 +1,3 @@
+mod modules1;
+mod modules2;
+mod modules3;
--- a/exercises/move_semantics/mod.rs
+++ b/exercises/move_semantics/mod.rs
@@ -0,0 +1,6 @@
+mod move_semantics1;
+mod move_semantics2;
+mod move_semantics3;
+mod move_semantics4;
+mod move_semantics5;
+mod move_semantics6;
--- a/exercises/move_semantics/move_semantics2.rs
+++ b/exercises/move_semantics/move_semantics2.rs
@@ -1,5 +1,5 @@
 // move_semantics2.rs
-// Make me compile without changing line 13!
+// Make me compile without changing line 13 or moving line 10!
 // Execute `rustlings hint move_semantics2` for hints :)

 // I AM NOT DONE
--- a/exercises/move_semantics/move_semantics5.rs
+++ b/exercises/move_semantics/move_semantics5.rs
@@ -1,5 +1,5 @@
 // move_semantics5.rs
-// Make me compile only be reordering the lines in `main()`, but without
+// Make me compile only by reordering the lines in `main()`, but without
 // adding, changing or removing any of them.
 // Execute `rustlings hint move_semantics5` for hints :)

--- a/exercises/move_semantics/move_semantics6.rs
+++ b/exercises/move_semantics/move_semantics6.rs
@@ -0,0 +1,25 @@
+// move_semantics6.rs
+// Make me compile! `rustlings hint move_semantics6` for hints
+// You can't change anything except adding or removing references
+
+// I AM NOT DONE
+
+fn main() {
+    let data = "Rust is great!".to_string();
+
+    get_char(data);
+
+    string_uppercase(&data);
+}
+
+// Should not take ownership
+fn get_char(data: String) -> char {
+    data.chars().last().unwrap()
+}
+
+// Should take ownership
+fn string_uppercase(mut data: &String) {
+    data = &data.to_uppercase();
+
+    println!("{}", data);
+}
--- a/exercises/option/README.md
+++ b/exercises/option/README.md
@@ -16,3 +16,5 @@ Option types are very common in Rust code, as they have a number of uses:
 - [Option Enum Format](https://doc.rust-lang.org/stable/book/ch10-01-syntax.html#in-enum-definitions)
 - [Option Module Documentation](https://doc.rust-lang.org/std/option/)
 - [Option Enum Documentation](https://doc.rust-lang.org/std/option/enum.Option.html)
+- [if let](https://doc.rust-lang.org/rust-by-example/flow_control/if_let.html)
+- [while let](https://doc.rust-lang.org/rust-by-example/flow_control/while_let.html)
--- a/exercises/option/mod.rs
+++ b/exercises/option/mod.rs
@@ -0,0 +1,3 @@
+mod option1;
+mod option2;
+mod option3;
--- a/exercises/option/option1.rs
+++ b/exercises/option/option1.rs
@@ -3,7 +3,7 @@

 // I AM NOT DONE

-// you can modify anything EXCEPT for this function's sig
+// you can modify anything EXCEPT for this function's signature
 fn print_number(maybe_number: Option<u16>) {
    println!("printing: {}", maybe_number.unwrap());
 }
--- a/exercises/primitive_types/mod.rs
+++ b/exercises/primitive_types/mod.rs
@@ -0,0 +1,6 @@
+mod primitive_types1;
+mod primitive_types2;
+mod primitive_types3;
+mod primitive_types4;
+mod primitive_types5;
+mod primitive_types6;
--- a/exercises/quiz1.rs
+++ b/exercises/quiz1.rs
@@ -2,6 +2,7 @@
 // This is a quiz for the following sections:
 // - Variables
 // - Functions
+// - If

 // Mary is buying apples. One apple usually costs 2 Rustbucks, but if you buy
 // more than 40 at once, each apple only costs 1! Write a function that calculates
--- a/exercises/standard_library_types/iterators1.rs
+++ b/exercises/standard_library_types/iterators1.rs
@@ -18,7 +18,7 @@ fn main () {
    assert_eq!(my_iterable_fav_fruits.next(), Some(&"banana"));
    assert_eq!(my_iterable_fav_fruits.next(), ???);     // TODO: Step 2
    assert_eq!(my_iterable_fav_fruits.next(), Some(&"avocado"));
-    assert_eq!(my_iterable_fav_fruits.next(), ???);     // TODO: Step 2.1
-    assert_eq!(my_iterable_fav_fruits.next(), Some(&"raspberry"));
    assert_eq!(my_iterable_fav_fruits.next(), ???);     // TODO: Step 3
+    assert_eq!(my_iterable_fav_fruits.next(), Some(&"raspberry"));
+    assert_eq!(my_iterable_fav_fruits.next(), ???);     // TODO: Step 4
 }
--- a/exercises/standard_library_types/mod.rs
+++ b/exercises/standard_library_types/mod.rs
@@ -0,0 +1,7 @@
+mod arc1;
+mod box1;
+mod iterators1;
+mod iterators2;
+mod iterators3;
+mod iterators4;
+mod iterators5;
--- a/exercises/strings/mod.rs
+++ b/exercises/strings/mod.rs
@@ -0,0 +1,2 @@
+mod strings1;
+mod strings2;
--- a/exercises/structs/mod.rs
+++ b/exercises/structs/mod.rs
@@ -0,0 +1,3 @@
+mod structs1;
+mod structs2;
+mod structs3;
--- a/exercises/structs/structs3.rs
+++ b/exercises/structs/structs3.rs
@@ -16,13 +16,13 @@ struct Package {
 impl Package {
    fn new(sender_country: String, recipient_country: String, weight_in_grams: i32) -> Package {
        if weight_in_grams <= 0 {
-            // Something goes here...
+            // panic statement goes here...
        } else {
-            return Package {
+            Package {
                sender_country,
                recipient_country,
                weight_in_grams,
-            };
+            }
        }
    }

@@ -73,7 +73,7 @@ mod tests {
        let sender_country = String::from("Spain");
        let recipient_country = String::from("Spain");

-        let cents_per_gram = ???;
+        let cents_per_gram = 3;

        let package = Package::new(sender_country, recipient_country, 1500);

--- a/exercises/tests/mod.rs
+++ b/exercises/tests/mod.rs
@@ -0,0 +1,3 @@
+mod tests1;
+mod tests2;
+mod tests3;
--- a/exercises/threads/mod.rs
+++ b/exercises/threads/mod.rs
@@ -0,0 +1 @@
+mod threads1;
--- a/exercises/traits/mod.rs
+++ b/exercises/traits/mod.rs
@@ -0,0 +1,2 @@
+mod traits1;
+mod traits2;
--- a/exercises/traits/traits1.rs
+++ b/exercises/traits/traits1.rs
@@ -29,12 +29,12 @@ mod tests {
    use super::*;

    #[test]
-    fn is_FooBar() {
+    fn is_foo_bar() {
        assert_eq!(String::from("Foo").append_bar(), String::from("FooBar"));
    }

    #[test]
-    fn is_BarBar() {
+    fn is_bar_bar() {
        assert_eq!(
            String::from("").append_bar().append_bar(),
            String::from("BarBar")
--- a/exercises/variables/mod.rs
+++ b/exercises/variables/mod.rs
@@ -0,0 +1,6 @@
+mod variables1;
+mod variables2;
+mod variables3;
+mod variables4;
+mod variables5;
+mod variables6;
--- a/exercises/variables/variables1.rs
+++ b/exercises/variables/variables1.rs
@@ -1,10 +1,6 @@
 // variables1.rs
-// Make me compile! Execute the command `rustlings hint variables1` if you want a hint :)
-
-// About this `I AM NOT DONE` thing:
-// We sometimes encourage you to keep trying things on a given exercise,
-// even after you already figured it out. If you got everything working and
-// feel ready for the next exercise, remove the `I AM NOT DONE` comment below.
+// Make me compile!
+// Execute the command `rustlings hint variables1` if you want a hint :)

 // I AM NOT DONE

--- a/info.toml
+++ b/info.toml
@@ -1,3 +1,19 @@
+# INTRO
+
+[[exercises]]
+name = "intro1"
+path = "exercises/intro/intro1.rs"
+mode = "compile"
+hint = """
+Remove the I AM NOT DONE comment to move on to the next exercise."""
+
+[[exercises]]
+name = "intro2"
+path = "exercises/intro/intro2.rs"
+mode = "compile"
+hint = """
+Add an argument after the format string."""
+
 # VARIABLES

 [[exercises]]
@@ -114,8 +130,7 @@ path = "exercises/functions/functions5.rs"
 mode = "compile"
 hint = """
 This is a really common error that can be fixed by removing one character.
-It happens because Rust distinguishes between expressions and statements: expressions return
-a value based on its operand, and statements simply return a () type which behaves just like `void` in C/C++ language.
+It happens because Rust distinguishes between expressions and statements: expressions return a value based on their operand(s), and statements simply return a () type which behaves just like `void` in C/C++ language.
 We want to return a value of `i32` type from the `square` function, but it is returning a `()` type...
 They are not the same. There are two solutions:
 1. Add a `return` ahead of `num * num;`
@@ -222,6 +237,21 @@ in the book's section References and Borrowing':
 https://doc.rust-lang.org/book/ch04-02-references-and-borrowing.html#mutable-references.
 """

+[[exercises]]
+name = "move_semantics6"
+path = "exercises/move_semantics/move_semantics6.rs"
+mode = "compile"
+hint = """
+To find the answer, you can consult the book section "References and Borrowing":
+https://doc.rust-lang.org/stable/book/ch04-02-references-and-borrowing.html
+The first problem is that `get_char` is taking ownership of the string.
+So `data` is moved and can't be used for `string_uppercase`
+`data` is moved to `get_char` first, meaning that `string_uppercase` cannot manipulate the data.
+Once you've fixed that, `string_uppercase`'s function signature will also need to be adjusted.
+Can you figure out how?
+
+Another hint: it has to do with the `&` character."""
+
 # PRIMITIVE TYPES

 [[exercises]]
@@ -364,7 +394,7 @@ mode = "compile"
 hint = """
 The delicious_snacks module is trying to present an external interface that is 
 different than its internal structure (the `fruits` and `veggies` modules and
-associated constants). Complete the `use` statemants to fit the uses in main and
+associated constants). Complete the `use` statements to fit the uses in main and
 find the one keyword missing for both constants."""

 [[exercises]]
@@ -460,7 +490,7 @@ name = "errors1"
 path = "exercises/error_handling/errors1.rs"
 mode = "test"
 hint = """
-`Err` is one of the variants of `Result`, so what the 2nd test is saying
+`Ok` and `Err` are one of the variants of `Result`, so what the tests are saying
 is that `generate_nametag_text` should return a `Result` instead of an
 `Option`.

@@ -470,9 +500,7 @@ To make this change, you'll need to:
   - change the body of the function to return `Ok(stuff)` where it currently
     returns `Some(stuff)`
   - change the body of the function to return `Err(error message)` where it
-     currently returns `None`
-   - change the first test to expect `Ok(stuff)` where it currently expects
-     `Some(stuff)`."""
+     currently returns `None`"""

 [[exercises]]
 name = "errors2"
@@ -907,15 +935,15 @@ name = "clippy1"
 path = "exercises/clippy/clippy1.rs"
 mode = "clippy"
 hint = """
-Not every floating point value can be represented exactly in binary values in
-memory. Take a look at the description of 
-https://doc.rust-lang.org/stable/std/primitive.f32.html
-When using the binary compare operators with floating points you won't compare
-the floating point values but the binary representation in memory. This is 
-usually not what you would like to do. 
+Rust stores the highest precision version of any long or inifinite precision
+mathematical constants in the rust standard library.
+https://doc.rust-lang.org/stable/std/f32/consts/index.html
+
+We may be tempted to use our own approximations for certain mathematical constants,
+but clippy recognizes those imprecise mathematical constants as a source of 
+potential error.
 See the suggestions of the clippy warning in compile output and use the
-machine epsilon value...
-https://doc.rust-lang.org/stable/std/primitive.f32.html#associatedconstant.EPSILON"""
+appropriate replacement constant from std::f32::consts..."""

 [[exercises]]
 name = "clippy2"
--- a/install.sh
+++ b/install.sh
@@ -1,4 +1,5 @@
 #!/usr/bin/env bash
+set -euo pipefail

 echo "Let's get you set up with Rustlings!"

@@ -12,6 +13,18 @@ else
    exit 1
 fi

+if [ -x "$(command -v cc)" ]
+then
+    echo "SUCCESS: cc is installed"
+else
+    echo "ERROR: cc does not seem to be installed."
+    echo "Please download (g)cc using your package manager."
+    echo "OSX: xcode-select --install"
+    echo "Deb: sudo apt install gcc"
+    echo "Yum: sudo yum -y install gcc"
+    exit 1
+fi
+
 if [ -x "$(command -v rustc)" ]
 then
    echo "SUCCESS: Rust is installed"
@@ -88,8 +101,8 @@ function vercomp() {

 RustVersion=$(rustc --version | cut -d " " -f 2)
 MinRustVersion=1.39
-vercomp $RustVersion $MinRustVersion
-if [ $? -eq 2 ]
+vercomp "$RustVersion" $MinRustVersion || ec=$?
+if [ ${ec:-0} -eq 2 ]
 then
    echo "ERROR: Rust version is too old: $RustVersion - needs at least $MinRustVersion"
    echo "Please update Rust with 'rustup update'"
@@ -100,9 +113,9 @@ fi

 Path=${1:-rustlings/}
 echo "Cloning Rustlings at $Path..."
-git clone -q https://github.com/rust-lang/rustlings $Path
+git clone -q https://github.com/rust-lang/rustlings "$Path"

-cd $Path
+cd "$Path"

 Version=$(curl -s https://api.github.com/repos/rust-lang/rustlings/releases/latest | ${PY} -c "import json,sys;obj=json.load(sys.stdin);print(obj['tag_name']);")
 CargoBin="${CARGO_HOME:-$HOME/.cargo}/bin"
--- a/src/exercise.rs
+++ b/src/exercise.rs
@@ -154,7 +154,7 @@ path = "{}.rs""#,
                Command::new("cargo")
                    .args(&["clippy", "--manifest-path", CLIPPY_CARGO_TOML_PATH])
                    .args(RUSTC_COLOR_ARGS)
-                    .args(&["--", "-D", "warnings"])
+                    .args(&["--", "-D", "warnings","-D","clippy::float_cmp"])
                    .output()
            }
        }
@@ -217,8 +217,7 @@ path = "{}.rs""#,
        let matched_line_index = source
            .lines()
            .enumerate()
-            .filter_map(|(i, line)| if re.is_match(line) { Some(i) } else { None })
-            .next()
+            .find_map(|(i, line)| if re.is_match(line) { Some(i) } else { None })
            .expect("This should not happen at all");

        let min_line = ((matched_line_index as i32) - (CONTEXT as i32)).max(0) as usize;
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -0,0 +1,3 @@
+#[cfg(feature = "exercises")]
+#[path = "../exercises/mod.rs"]
+mod exercises;
--- a/src/main.rs
+++ b/src/main.rs
@@ -24,7 +24,7 @@ mod run;
 mod verify;

 // In sync with crate version
-const VERSION: &str = "4.6.0";
+const VERSION: &str = "4.7.0";

 #[derive(FromArgs, PartialEq, Debug)]
 /// Rustlings is a collection of small exercises to get you used to writing and reading Rust code
@@ -108,15 +108,7 @@ fn main() {
    }

    if args.nested.is_none() {
-        println!();
-        println!(r#"       welcome to...                      "#);
-        println!(r#"                 _   _ _                  "#);
-        println!(r#"  _ __ _   _ ___| |_| (_)_ __   __ _ ___  "#);
-        println!(r#" | '__| | | / __| __| | | '_ \ / _` / __| "#);
-        println!(r#" | |  | |_| \__ \ |_| | | | | | (_| \__ \ "#);
-        println!(r#" |_|   \__,_|___/\__|_|_|_| |_|\__, |___/ "#);
-        println!(r#"                               |___/      "#);
-        println!();
+        println!("\n{}\n", WELCOME);
    }

    if !Path::new("info.toml").exists() {
@@ -140,8 +132,7 @@ fn main() {
    let verbose = args.nocapture;

    let command = args.nested.unwrap_or_else(|| {
-        let text = fs::read_to_string("default_out.txt").unwrap();
-        println!("{}", text);
+        println!("{}\n", DEFAULT_OUT);
        std::process::exit(0);
    });
    match command {
@@ -164,9 +155,7 @@ fn main() {
                    "Pending"
                };
                let solve_cond = {
-                    (e.looks_done() && subargs.solved)
-                        || (!e.looks_done() && subargs.unsolved)
-                        || (!subargs.solved && !subargs.unsolved)
+                    (e.looks_done() && subargs.solved) || (!e.looks_done() && subargs.unsolved) || (!subargs.solved && !subargs.unsolved)
                };
                if solve_cond && (filter_cond || subargs.filter.is_none()) {
                    let line = if subargs.paths {
@@ -219,49 +208,13 @@ fn main() {

        Subcommands::Watch(_subargs) => match watch(&exercises, verbose) {
            Err(e) => {
-                println!(
-                    "Error: Could not watch your progress. Error message was {:?}.",
-                    e
-                );
+                println!("Error: Could not watch your progress. Error message was {:?}.", e);
                println!("Most likely you've run out of disk space or your 'inotify limit' has been reached.");
                std::process::exit(1);
            }
            Ok(WatchStatus::Finished) => {
-                println!(
-                    "{emoji} All exercises completed! {emoji}",
-                    emoji = Emoji("🎉", "★")
-                );
-                println!();
-                println!("+----------------------------------------------------+");
-                println!("|          You made it to the Fe-nish line!          |");
-                println!("+--------------------------  ------------------------+");
-                println!("                          \\/                         ");
-                println!("     ▒▒          ▒▒▒▒▒▒▒▒      ▒▒▒▒▒▒▒▒          ▒▒   ");
-                println!("   ▒▒▒▒  ▒▒    ▒▒        ▒▒  ▒▒        ▒▒    ▒▒  ▒▒▒▒ ");
-                println!("   ▒▒▒▒  ▒▒  ▒▒            ▒▒            ▒▒  ▒▒  ▒▒▒▒ ");
-                println!(" ░░▒▒▒▒░░▒▒  ▒▒            ▒▒            ▒▒  ▒▒░░▒▒▒▒ ");
-                println!("   ▓▓▓▓▓▓▓▓  ▓▓      ▓▓██  ▓▓  ▓▓██      ▓▓  ▓▓▓▓▓▓▓▓ ");
-                println!("     ▒▒▒▒    ▒▒      ████  ▒▒  ████      ▒▒░░  ▒▒▒▒   ");
-                println!("       ▒▒  ▒▒▒▒▒▒        ▒▒▒▒▒▒        ▒▒▒▒▒▒  ▒▒     ");
-                println!("         ▒▒▒▒▒▒▒▒▒▒▓▓▓▓▓▓▒▒▒▒▒▒▒▒▓▓▒▒▓▓▒▒▒▒▒▒▒▒       ");
-                println!("           ▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒         ");
-                println!("             ▒▒▒▒▒▒▒▒▒▒██▒▒▒▒▒▒██▒▒▒▒▒▒▒▒▒▒           ");
-                println!("           ▒▒  ▒▒▒▒▒▒▒▒▒▒██████▒▒▒▒▒▒▒▒▒▒  ▒▒         ");
-                println!("         ▒▒    ▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒    ▒▒       ");
-                println!("       ▒▒    ▒▒    ▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒    ▒▒    ▒▒     ");
-                println!("       ▒▒  ▒▒    ▒▒                  ▒▒    ▒▒  ▒▒     ");
-                println!("           ▒▒  ▒▒                      ▒▒  ▒▒         ");
-                println!();
-                println!("We hope you enjoyed learning about the various aspects of Rust!");
-                println!(
-                    "If you noticed any issues, please don't hesitate to report them to our repo."
-                );
-                println!(
-                    "You can also contribute your own exercises to help the greater community!"
-                );
-                println!();
-                println!("Before reporting an issue or contributing, please read our guidelines:");
-                println!("https://github.com/rust-lang/rustlings/blob/main/CONTRIBUTING.md");
+                println!("{emoji} All exercises completed! {emoji}", emoji = Emoji("🎉", "★"));
+                println!("\n{}\n", FENISH_LINE);
            }
            Ok(WatchStatus::Unfinished) => {
                println!("We hope you're enjoying learning about Rust!");
@@ -271,10 +224,7 @@ fn main() {
    }
 }

-fn spawn_watch_shell(
-    failed_exercise_hint: &Arc<Mutex<Option<String>>>,
-    should_quit: Arc<AtomicBool>,
-) {
+fn spawn_watch_shell(failed_exercise_hint: &Arc<Mutex<Option<String>>>, should_quit: Arc<AtomicBool>) {
    let failed_exercise_hint = Arc::clone(failed_exercise_hint);
    println!("Welcome to watch mode! You can type 'help' to get an overview of the commands you can use here.");
    thread::spawn(move || loop {
@@ -311,22 +261,16 @@ fn spawn_watch_shell(

 fn find_exercise<'a>(name: &str, exercises: &'a [Exercise]) -> &'a Exercise {
    if name.eq("next") {
-        exercises
-            .iter()
-            .find(|e| !e.looks_done())
-            .unwrap_or_else(|| {
-                println!("🎉 Congratulations! You have done all the exercises!");
-                println!("🔚 There are no more exercises to do next!");
-                std::process::exit(1)
-            })
+        exercises.iter().find(|e| !e.looks_done()).unwrap_or_else(|| {
+            println!("🎉 Congratulations! You have done all the exercises!");
+            println!("🔚 There are no more exercises to do next!");
+            std::process::exit(1)
+        })
    } else {
-        exercises
-            .iter()
-            .find(|e| e.name == name)
-            .unwrap_or_else(|| {
-                println!("No exercise found for '{}'!", name);
-                std::process::exit(1)
-            })
+        exercises.iter().find(|e| e.name == name).unwrap_or_else(|| {
+            println!("No exercise found for '{}'!", name);
+            std::process::exit(1)
+        })
    }
 }

@@ -366,11 +310,7 @@ fn watch(exercises: &[Exercise], verbose: bool) -> notify::Result<WatchStatus> {
                            .iter()
                            .skip_while(|e| !filepath.ends_with(&e.path))
                            // .filter(|e| filepath.ends_with(&e.path))
-                            .chain(
-                                exercises
-                                    .iter()
-                                    .filter(|e| !e.looks_done() && !filepath.ends_with(&e.path)),
-                            );
+                            .chain(exercises.iter().filter(|e| !e.looks_done() && !filepath.ends_with(&e.path)));
                        clear_screen();
                        match verify(pending_exercises, verbose) {
                            Ok(_) => return Ok(WatchStatus::Finished),
@@ -404,3 +344,64 @@ fn rustc_exists() -> bool {
        .map(|status| status.success())
        .unwrap_or(false)
 }
+
+const DEFAULT_OUT: &str = r#"Thanks for installing Rustlings!
+
+Is this your first time? Don't worry, Rustlings was made for beginners! We are
+going to teach you a lot of things about Rust, but before we can get
+started, here's a couple of notes about how Rustlings operates:
+
+1. The central concept behind Rustlings is that you solve exercises. These
+   exercises usually have some sort of syntax error in them, which will cause
+   them to fail compilation or testing. Sometimes there's a logic error instead
+   of a syntax error. No matter what error, it's your job to find it and fix it!
+   You'll know when you fixed it because then, the exercise will compile and
+   Rustlings will be able to move on to the next exercise.
+2. If you run Rustlings in watch mode (which we recommend), it'll automatically
+   start with the first exercise. Don't get confused by an error message popping
+   up as soon as you run Rustlings! This is part of the exercise that you're
+   supposed to solve, so open the exercise file in an editor and start your
+   detective work!
+3. If you're stuck on an exercise, there is a helpful hint you can view by typing
+   'hint' (in watch mode), or running `rustlings hint exercise_name`.
+4. If an exercise doesn't make sense to you, feel free to open an issue on GitHub!
+   (https://github.com/rust-lang/rustlings/issues/new). We look at every issue,
+   and sometimes, other learners do too so you can help each other out!
+
+Got all that? Great! To get started, run `rustlings watch` in order to get the first
+exercise. Make sure to have your editor open!"#;
+
+const FENISH_LINE: &str = r#"+----------------------------------------------------+
+|          You made it to the Fe-nish line!          |
+--------------------------  ------------------------+
+                          \\/
+     ▒▒          ▒▒▒▒▒▒▒▒      ▒▒▒▒▒▒▒▒          ▒▒
+   ▒▒▒▒  ▒▒    ▒▒        ▒▒  ▒▒        ▒▒    ▒▒  ▒▒▒▒
+   ▒▒▒▒  ▒▒  ▒▒            ▒▒            ▒▒  ▒▒  ▒▒▒▒
+ ░░▒▒▒▒░░▒▒  ▒▒            ▒▒            ▒▒  ▒▒░░▒▒▒▒
+   ▓▓▓▓▓▓▓▓  ▓▓      ▓▓██  ▓▓  ▓▓██      ▓▓  ▓▓▓▓▓▓▓▓
+     ▒▒▒▒    ▒▒      ████  ▒▒  ████      ▒▒░░  ▒▒▒▒
+       ▒▒  ▒▒▒▒▒▒        ▒▒▒▒▒▒        ▒▒▒▒▒▒  ▒▒
+         ▒▒▒▒▒▒▒▒▒▒▓▓▓▓▓▓▒▒▒▒▒▒▒▒▓▓▒▒▓▓▒▒▒▒▒▒▒▒
+           ▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒
+             ▒▒▒▒▒▒▒▒▒▒██▒▒▒▒▒▒██▒▒▒▒▒▒▒▒▒▒
+           ▒▒  ▒▒▒▒▒▒▒▒▒▒██████▒▒▒▒▒▒▒▒▒▒  ▒▒
+         ▒▒    ▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒    ▒▒
+       ▒▒    ▒▒    ▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒    ▒▒    ▒▒
+       ▒▒  ▒▒    ▒▒                  ▒▒    ▒▒  ▒▒
+           ▒▒  ▒▒                      ▒▒  ▒▒
+
+We hope you enjoyed learning about the various aspects of Rust!
+If you noticed any issues, please don't hesitate to report them to our repo.
+You can also contribute your own exercises to help the greater community!
+
+Before reporting an issue or contributing, please read our guidelines:
+https://github.com/rust-lang/rustlings/blob/main/CONTRIBUTING.md"#;
+
+const WELCOME: &str = r#"       welcome to...
+                 _   _ _
+  _ __ _   _ ___| |_| (_)_ __   __ _ ___
+ | '__| | | / __| __| | | '_ \ / _` / __|
+ | |  | |_| \__ \ |_| | | | | | (_| \__ \
+ |_|   \__,_|___/\__|_|_|_| |_|\__, |___/
+                               |___/"#;
--- a/tests/integration_tests.rs
+++ b/tests/integration_tests.rs
@@ -125,6 +125,9 @@ fn get_hint_for_single_test() {
 fn all_exercises_require_confirmation() {
    for exercise in glob("exercises/**/*.rs").unwrap() {
        let path = exercise.unwrap();
+        if path.file_name().unwrap() == "mod.rs" {
+            continue
+        }
        let source = {
            let mut file = File::open(&path).unwrap();
            let mut s = String::new();
Author	SHA1	Message	Date
mokou	0b7f3fe37a	test: skip mod.rs files when checking for annotations	2022-04-14 11:19:54 +02:00
mokou	cf9f382873	chore: bump version	2022-04-14 11:16:00 +02:00
mokou	8f33dba9ca	docs: write documentation for enabling rust-analyzer	2022-04-14 11:15:04 +02:00
mokou	6c87dc8210	docs: update changelog for new release	2022-04-14 11:09:27 +02:00
diannasoreil	6c071d4701	Merge pull request #963 from rust-lang/all-contributors/add-J-S-Kim docs: add J-S-Kim as a contributor for content	2022-04-14 10:46:23 +02:00
allcontributors[bot]	03ba8836f2	docs: update .all-contributorsrc [skip ci]	2022-04-14 08:44:39 +00:00
allcontributors[bot]	4bb94e050b	docs: update AUTHORS.md [skip ci]	2022-04-14 08:44:38 +00:00
diannasoreil	51817820f2	Merge pull request #961 from J-S-Kim/main fix(errors6.rs): remove one answer code	2022-04-14 10:44:22 +02:00
mokou	76a36dd385	chore: update errors1 comments and hint	2022-04-14 10:32:43 +02:00
diannasoreil	c39eb3fe55	Merge pull request #962 from rust-lang/all-contributors/add-stevenfukase docs: add stevenfukase as a contributor for content	2022-04-14 10:26:16 +02:00
allcontributors[bot]	7dcc1fca29	docs: update .all-contributorsrc [skip ci]	2022-04-14 08:26:07 +00:00
allcontributors[bot]	887b6e183b	docs: update AUTHORS.md [skip ci]	2022-04-14 08:26:06 +00:00
stevenfukase	60bb7cc393	Fix test (#958 ) fix(errors1): don't modify tests	2022-04-14 10:25:44 +02:00
J-S-Kim	43d0623086	fix(errors6.rs): remove one answer code Although marked as 'TODO', three tests pass without any implementation because the correct answer code already exists.	2022-04-09 01:23:58 +09:00
diannasoreil	e6c0d00637	Merge pull request #959 from rust-lang/all-contributors/add-ragreenburg docs: add ragreenburg as a contributor for content	2022-04-06 09:29:59 +02:00
allcontributors[bot]	b1cdce6289	docs: update .all-contributorsrc [skip ci]	2022-04-06 07:29:50 +00:00
allcontributors[bot]	d3c5058d89	docs: update AUTHORS.md [skip ci]	2022-04-06 07:29:49 +00:00
ragreenburg	89650f808a	fix(move_semantics2): Add comment	2022-04-06 09:29:27 +02:00
diannasoreil	0a92262fa0	Merge pull request #953 from haveneer-training/fix-installation-path fix(install): protect path with whitespaces using quotes	2022-04-04 17:22:22 +02:00
diannasoreil	4e2a354716	Merge pull request #954 from haveneer-training/fix-mod-content fix(move_semantics) : add move_semantics6.rs to its mod	2022-04-04 17:10:23 +02:00
diannasoreil	74895df5a7	Merge pull request #738 from apogeeoak/text fix(cli): Move long text strings into constants.	2022-04-04 17:09:49 +02:00
Pascal Havé	d114847f25	fix(install): protect path with whitespaces using quotes and stop at the first error	2022-04-04 00:27:05 +02:00
Pascal Havé	4dfd85ff05	fix(move_semantics) : add move_semantics6.rs to its mod	2022-04-03 23:51:46 +02:00
Soroush Zare	0bd7a0631a	fix(iterators1): reorder TODO steps Update the TODO steps in the iterators1 exercise.	2022-03-30 13:27:52 +02:00
mokou	bdf6efeccd	chore: clean up readme	2022-03-29 15:04:52 +02:00
diannasoreil	331cdef7e3	Merge pull request #950 from rust-lang/all-contributors/add-Kallu-A docs: add Kallu-A as a contributor for content	2022-03-29 15:03:06 +02:00
allcontributors[bot]	d4e3d98d0a	docs: update .all-contributorsrc [skip ci]	2022-03-29 13:02:52 +00:00
allcontributors[bot]	2ca5250f78	docs: update AUTHORS.md [skip ci]	2022-03-29 13:02:51 +00:00
Lucas Aries	3f0e1303e0	feat: Add move_semantics6.rs exercise (#908 )	2022-03-29 15:02:35 +02:00
diannasoreil	c80ad089fd	Merge pull request #949 from rust-lang/all-contributors/add-KisaragiEffective docs: add KisaragiEffective as a contributor for doc	2022-03-29 15:01:09 +02:00
mokou	01023f5b4f	chore: copy existing contributors table	2022-03-29 14:59:13 +02:00
allcontributors[bot]	70e29d9717	docs: update .all-contributorsrc [skip ci]	2022-03-29 12:54:22 +00:00
allcontributors[bot]	c60bd97cb9	docs: update AUTHORS.md [skip ci]	2022-03-29 12:54:21 +00:00
diannasoreil	d00f0d8c57	Merge pull request #947 from KisaragiEffective/patch-1 docs: fix some code-blocks were not highlighted	2022-03-29 14:53:55 +02:00
mokou	bf93724511	chore: add empty authors file	2022-03-29 11:52:06 +02:00
mokou	057d912e78	chore: push contributors to AUTHORS.md the readme file is getting a bit crowded at this point, it's better to have a reference to AUTHORS.md, and then to let the bot add it in there	2022-03-29 11:49:36 +02:00
diannasoreil	e306e23963	Merge pull request #948 from rust-lang/all-contributors/add-x-hgg-x docs: add x-hgg-x as a contributor for code	2022-03-29 11:48:05 +02:00
allcontributors[bot]	0232f6058f	docs: update .all-contributorsrc [skip ci]	2022-03-29 09:47:51 +00:00
allcontributors[bot]	4378d1db46	docs: update README.md [skip ci]	2022-03-29 09:47:50 +00:00
x-hgg-x	179a75a68d	fix: Include exercises folder in the project structure behind a feature (#917 ) closes #859 closes #913 closes #942	2022-03-29 11:44:06 +02:00
Kisaragi	17f9d7429c	docs: fix some code-blocks were not highlighted	2022-03-28 10:10:25 +09:00
apogeeoak	c1f35e46df	Merge branch 'main' into text	2022-02-04 19:27:42 -05:00
diannasoreil	cd2b5e8e3b	Merge pull request #926 from rust-lang/all-contributors/add-highb docs: add highb as a contributor for doc	2022-02-04 15:39:55 +01:00
allcontributors[bot]	dc36ca6d84	docs: update .all-contributorsrc [skip ci]	2022-02-04 14:39:43 +00:00
allcontributors[bot]	e96112ab99	docs: update README.md [skip ci]	2022-02-04 14:39:42 +00:00
Brandon High	bc56861744	doc: Add hints on how to get gcc installed (#741 )	2022-02-04 15:38:55 +01:00
diannasoreil	4cde788d33	Merge pull request #733 from apogeeoak/intro feat(intro): Proposal to add successfully compiling exercise as the first exercise.	2022-02-04 15:26:15 +01:00
diannasoreil	9838892cf3	Merge pull request #728 from Zerotask/improve-option-further-information docs(option): improve further information if let and while let	2022-02-04 15:22:23 +01:00
diannasoreil	9c5d8ad44c	Merge pull request #925 from rust-lang/all-contributors/add-sundevilyang docs: add sundevilyang as a contributor for content	2022-02-04 15:13:43 +01:00
allcontributors[bot]	a2e74a2a4b	docs: update .all-contributorsrc [skip ci]	2022-02-04 14:13:32 +00:00
allcontributors[bot]	52c7f8a859	docs: update README.md [skip ci]	2022-02-04 14:13:31 +00:00
Yang Wen	4f7ff5d9c7	fix(structs3): Add a hint for panic (#608 ) as a totally newbie to Rust, I don't know panic statement from https://doc.rust-lang.org/book/ and rustlings in the beginning. After a hard searching of [should_panic], then I figure out panic statement. So it's helpful to tell the learner that write a panic statement here.	2022-02-04 15:12:02 +01:00
zydxhs	cbcde34540	fix(errors1): Add a comment to make the purpose more clear (#486 ) Signed-off-by: zydxhs <johnsmithcry@163.com>	2022-02-04 15:00:24 +01:00
radicale	71a06044e6	fix(clippy1): Set clippy::float_cmp lint to deny (#907 )	2022-02-04 14:39:09 +01:00
diannasoreil	5002c54ffb	Merge pull request #901 from rust-lang/all-contributors/add-tan-zx docs: add tan-zx as a contributor for content	2021-12-30 12:59:14 +01:00
allcontributors[bot]	17e3e75331	docs: update .all-contributorsrc [skip ci]	2021-12-30 11:59:06 +00:00
allcontributors[bot]	af84359bdb	docs: update README.md [skip ci]	2021-12-30 11:59:05 +00:00
diannasoreil	74739261d6	Merge pull request #899 from tan-zx/quiz1/comments fix(quiz1): update to say quiz covers "If"	2021-12-30 12:58:50 +01:00
ZX	1622e8c198	fix(quiz1): update to say quiz covers "If"	2021-12-29 14:55:37 +08:00
diannasoreil	e06ba1df58	Merge pull request #896 from rust-lang/all-contributors/add-nekonako docs: add nekonako as a contributor for code	2021-12-24 13:28:16 +01:00
allcontributors[bot]	7dce8c8b61	docs: update .all-contributorsrc [skip ci]	2021-12-24 12:28:08 +00:00
allcontributors[bot]	f61f9f3796	docs: update README.md [skip ci]	2021-12-24 12:28:07 +00:00
diannasoreil	6516a89485	Merge pull request #894 from nekonako/main chore : replace filter_map() with find_map()	2021-12-24 13:27:52 +01:00
Galih wisnuaji	9b27e8d993	chore : replace filter_map() with find_map()	2021-12-24 13:48:43 +07:00
diannasoreil	f7719a4a9c	Merge pull request #891 from rust-lang/all-contributors/add-frvannes16 docs: add frvannes16 as a contributor for code	2021-12-16 14:11:39 +01:00
allcontributors[bot]	81fb396780	docs: update .all-contributorsrc [skip ci]	2021-12-16 13:11:15 +00:00
allcontributors[bot]	8d675198d8	docs: update README.md [skip ci]	2021-12-16 13:11:14 +00:00
diannasoreil	969384c258	Merge pull request #890 from frvannes16/fix/888-std-floats fix(clippy1): Trigger approx_constant lint rule instead of downgraded float_cmp.	2021-12-16 14:10:58 +01:00
Franklin van Nes	f2650de369	fix(clippy1): Updated code to test correctness clippy lint with approx_constant lint rule closes #888	2021-12-15 11:46:27 -05:00
diannasoreil	acaee79994	Merge pull request #889 from rust-lang/all-contributors/add-alirezaghey docs: add alirezaghey as a contributor for content	2021-12-15 10:44:48 +01:00
allcontributors[bot]	527a5b1182	docs: update .all-contributorsrc [skip ci]	2021-12-15 09:44:39 +00:00
allcontributors[bot]	72b2c9f54f	docs: update README.md [skip ci]	2021-12-15 09:44:38 +00:00
alirezaghey	8ef4869b26	fix(functions5): Remove wrong new line and small English improvements (#885 )	2021-12-15 10:44:21 +01:00
diannasoreil	dba759e1c6	Merge pull request #872 from rust-lang/all-contributors/add-MpdWalsh docs: add MpdWalsh as a contributor for code	2021-10-31 17:25:43 +01:00
allcontributors[bot]	cb661896a2	docs: update .all-contributorsrc [skip ci]	2021-10-31 16:25:36 +00:00
allcontributors[bot]	e08b6cf3ef	docs: update README.md [skip ci]	2021-10-31 16:25:35 +00:00
diannasoreil	e2fa512e86	Merge pull request #871 from MpdWalsh/main fix(structs3.rs): assigned value to cents_per_gram in test	2021-10-31 17:25:18 +01:00
Michael Walsh	d1ee2daf14	fix(structs3.rs): assigned value to cents_per_gram in test Intended to simplify the lesson by removing the need to figure out what the value is meant to be based on the tests. Previous commits (`9ca08b8f2b` and `114b54cbdb (diff-ce1c232ff0ddaff909351bb84cb5bff423b5b9e04f21fd4db7ffe443e598e174)`) removed the mathematical complexity, and I feel this addition is a needed change to further streamline the exercise.	2021-10-30 16:55:58 -06:00
ana	359f81dd0b	chore: upgrade edition to 2021	2021-10-29 14:27:48 +02:00
diannasoriel	5e5271247a	Merge pull request #866 from rust-lang/all-contributors/add-xuesongbj docs: add xuesongbj as a contributor for content	2021-10-18 13:57:42 +02:00
allcontributors[bot]	71da9068e7	docs: update .all-contributorsrc [skip ci]	2021-10-18 11:57:34 +00:00
allcontributors[bot]	b24b295d88	docs: update README.md [skip ci]	2021-10-18 11:57:33 +00:00
xuesong	1663a16ead	fix(traits1): rename test functions to snake case (#854 ) Co-authored-by: zhangshaozhi <zhangshaozhi@ZhangshaozhideMacBook-Pro.local>	2021-10-18 13:57:12 +02:00
diannasoriel	af91eb508a	Merge pull request #860 from rlch/spelling-mistakes fix: few spelling mistakes	2021-10-02 23:09:52 +02:00
rlch	1c0fe3cbcc	fix: few spelling mistakes	2021-10-02 23:59:23 +10:00
diannasoriel	ed7fe883b9	Merge pull request #858 from rust-lang/all-contributors/add-fredr docs: add fredr as a contributor for content	2021-09-30 10:19:33 +02:00
allcontributors[bot]	ae54c17b6a	docs: update .all-contributorsrc [skip ci]	2021-09-30 08:18:53 +00:00
allcontributors[bot]	574bbffe0b	docs: update README.md [skip ci]	2021-09-30 08:18:52 +00:00
Fredrik Enestad	46c28d5cef	fix(move_semantics5): correct typo (#857 )	2021-09-30 10:18:36 +02:00
diannasoriel	ad338ee789	Merge pull request #853 from rust-lang/all-contributors/add-EmisonLu docs: add EmisonLu as a contributor for content	2021-09-27 10:03:57 +02:00
allcontributors[bot]	e3cfaa246d	docs: update .all-contributorsrc [skip ci]	2021-09-27 08:03:47 +00:00
allcontributors[bot]	fed4fe78bb	docs: update README.md [skip ci]	2021-09-27 08:03:46 +00:00
Zhenghao Lu	bf33829da2	fix(structs3): remove redundant 'return' (#852 )	2021-09-27 10:03:28 +02:00
apogeeoak	f78c480208	fix(cli): Move long text strings into constants.	2021-04-27 17:14:54 -04:00
apogeeoak	9b8de65525	fix(intro1): Add compiler error explanation.	2021-04-26 20:28:17 -04:00
apogeeoak	21c9f44168	feat(intro): Add intro section.	2021-04-24 13:15:34 -04:00
Zerotask	4a384cae4a	docs(option): improve further information	2021-04-24 12:12:49 +02:00