Update code style to use rust fmt.

.github/workflows/gui-ci.yml

@@ -120,6 +120,8 @@ jobs:
         run: npm install --save-dev --save-exact prettier
       - name: Install Clippy
         run: rustup component add clippy
+      - name: Install Clippy
+        run: rustup component add rustfmt
       - name: Lint Markdown sources
         run: npx prettier --check '*.md'
       - name: Lint JavaScript sources

build/run.js

@@ -240,8 +240,8 @@ commands.test.rust = async function(argv) {
 
 commands.lint = command(`Lint the codebase`)
 commands.lint.rust = async function() {
-    // We run clippy-preview due to https://github.com/rust-lang/rust-clippy/issues/4612
     await run_cargo('cargo',['clippy','--','-D','warnings'])
+    await run_cargo('cargo',['fmt','--','--check'])
 }
 
 

build/workflow.js

@@ -131,6 +131,11 @@ let installClippy = {
     run: "rustup component add clippy"
 }
 
+let installFmt = {
+    name: "Install Clippy",
+    run: "rustup component add rustfmt"
+}
+
 // Install fixed version to avoid upgrading to a breaking version.
 // Should be removed once this has a better solution as described here:
 // https://github.com/enso-org/ide/issues/1772
@@ -482,6 +487,7 @@ let workflow = {
             installRust,
             installPrettier,
             installClippy,
+            installFmt,
             lintMarkdown,
             lintJavaScript,
             lintRust