Update workflow definitions

- Use rust `--no-self-update` flag instead of separate command.
- Add an explicit test for the `git` registry, as the sparse registry is now the default.

.github/workflows/coverage.yml

@@ -18,11 +18,7 @@ jobs:
     steps:
       - uses: actions/checkout@v3
 
-      # When rustup is updated, it tries to replace its binary, which on Windows is somehow locked.
-      # This can result in the CI failure, see: https://github.com/rust-lang/rustup/issues/3029
-      - run: |
-          rustup set auto-self-update disable
-          rustup toolchain install stable --profile minimal --component llvm-tools-preview
+      - run: rustup toolchain install stable --profile minimal --component llvm-tools-preview --no-self-update
 
       - uses: taiki-e/install-action@cargo-llvm-cov
 

.github/workflows/sparse-registry.yml → .github/workflows/git-registry.yml

@@ -14,17 +14,12 @@ jobs:
 
     env:
       CARGO_TERM_COLOR: always
-      CARGO_UNSTABLE_SPARSE_REGISTRY: true
+      CARGO_REGISTRIES_CRATES_IO_PROTOCOL: git
 
     steps:
       - uses: actions/checkout@v3
 
-      # When rustup is updated, it tries to replace its binary, which on Windows is somehow locked.
-      # This can result in the CI failure, see: https://github.com/rust-lang/rustup/issues/3029
-      - run: |
-          rustup set auto-self-update disable
-          rustup toolchain install nightly --profile minimal
-          rustup default nightly
+      - run: rustup toolchain install stable --profile minimal --no-self-update
 
       - uses: ./
         with:

.github/workflows/install.yml

@@ -18,11 +18,7 @@ jobs:
     steps:
       - uses: actions/checkout@v3
 
-      # When rustup is updated, it tries to replace its binary, which on Windows is somehow locked.
-      # This can result in the CI failure, see: https://github.com/rust-lang/rustup/issues/3029
-      - run: |
-          rustup set auto-self-update disable
-          rustup toolchain install stable --profile minimal
+      - run: rustup toolchain install stable --profile minimal --no-self-update
 
       - uses: ./
 

.github/workflows/simple.yml

@@ -18,11 +18,7 @@ jobs:
     steps:
       - uses: actions/checkout@v3
 
-      # When rustup is updated, it tries to replace its binary, which on Windows is somehow locked.
-      # This can result in the CI failure, see: https://github.com/rust-lang/rustup/issues/3029
-      - run: |
-          rustup set auto-self-update disable
-          rustup toolchain install stable --profile minimal
+      - run: rustup toolchain install stable --profile minimal --no-self-update
 
       - uses: ./
         with:

.github/workflows/target-dir.yml

@@ -18,11 +18,7 @@ jobs:
     steps:
       - uses: actions/checkout@v3
 
-      # When rustup is updated, it tries to replace its binary, which on Windows is somehow locked.
-      # This can result in the CI failure, see: https://github.com/rust-lang/rustup/issues/3029
-      - run: |
-          rustup set auto-self-update disable
-          rustup toolchain install stable --profile minimal
+      - run: rustup toolchain install stable --profile minimal --no-self-update
 
       # the `workspaces` option has the format `$workspace -> $target-dir`
       # and the `$target-dir` is relative to the `$workspace`.

.github/workflows/workspaces.yml

@@ -18,11 +18,7 @@ jobs:
     steps:
       - uses: actions/checkout@v3
 
-      # When rustup is updated, it tries to replace its binary, which on Windows is somehow locked.
-      # This can result in the CI failure, see: https://github.com/rust-lang/rustup/issues/3029
-      - run: |
-          rustup set auto-self-update disable
-          rustup toolchain install stable --profile minimal --target wasm32-unknown-unknown
+      - run: rustup toolchain install stable --profile minimal --target wasm32-unknown-unknown --no-self-update
 
       - uses: ./
         with: