Do not enable sparse registry on stable

https://github.com/rust-lang/cargo/pull/11224
https://github.com/dtolnay/rust-toolchain/pull/54

.github/workflows/autotag-releases.yml

@@ -19,7 +19,7 @@ jobs:
       - name: Get version from tag
         id: tag_name
         run: |
-          echo ::set-output name=current_version::${GITHUB_REF#refs/tags/}
+          echo "current_version=${GITHUB_REF#refs/tags/}" >> $GITHUB_OUTPUT
         shell: bash
       - name: Create and push tags
         run: |

CHANGELOG.md

@@ -7,6 +7,56 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
+## [1.3.7] - 2023-01-31
+
+### Fixed
+
+* Disable the stable access to the sparse registry.
+    Setting the value causes problem on version before stabilization, e.g., 1.67.
+    For example, "cargo add" fails.
+
+## [1.3.6] - 2023-01-31
+
+### Fixed
+
+* The the correct environment variable to enable the sparse registry access.
+    The pull request originally had the wrong value, without `CARGO_` prefix.
+
+## [1.3.5] - 2023-01-21
+
+### Changed
+
+* Use the newly stabilized setting to enable sparse registry access.
+    This speeds up access to the crate registry and is in addition to the unstable nightly env var.
+    <https://github.com/rust-lang/cargo/pull/11224>
+
+## [1.3.4] - 2022-10-15
+
+### Changed
+
+* The last version did not fix all "set-output" commands
+
+## [1.3.3] - 2022-10-13
+
+### Changed
+
+* Switch from set-output to $GITHUB_OUTPUT to avoid warning
+    https://github.blog/changelog/2022-10-11-github-actions-deprecating-save-state-and-set-output-commands/
+
+## [1.3.2] - 2022-09-15
+
+### Fixed
+
+* Fix setting `$CARGO_HOME` to a valid path, in case rustup is installed from the internet.
+    Thanks to @nahsi for providing the fix.
+
+## [1.3.1] - 2022-08-14
+
+### Changed
+
+* Use the sparse-registry on nightly for faster access to the crate registry on nightly.
+    <https://internals.rust-lang.org/t/call-for-testing-cargo-sparse-registry/16862>
+
 ## [1.3.0] - 2022-07-30
 
 ### Added

action.yml

@@ -47,9 +47,9 @@ runs:
     - id: flags
       run: |
         : construct rustup command line
-        echo "::set-output name=targets::$(for t in ${targets//,/ }; do echo -n ' --target' $t; done)"
-        echo "::set-output name=components::$(for c in ${components//,/ }; do echo -n ' --component' $c; done)"
-        echo "::set-output name=downgrade::${{inputs.toolchain == 'nightly' && inputs.components && ' --allow-downgrade' || ''}}"
+        echo "targets=$(for t in ${targets//,/ }; do echo -n ' --target' $t; done)" >> $GITHUB_OUTPUT
+        echo "components=$(for c in ${components//,/ }; do echo -n ' --component' $c; done)" >> $GITHUB_OUTPUT
+        echo "downgrade=${{inputs.toolchain == 'nightly' && inputs.components && ' --allow-downgrade' || ''}}" >> $GITHUB_OUTPUT
       env:
         targets: ${{inputs.target}}
         components: ${{inputs.components}}
@@ -62,6 +62,14 @@ runs:
         echo "CARGO_TERM_COLOR=always" >> $GITHUB_ENV
         echo "RUST_BACKTRACE=short" >> $GITHUB_ENV
         echo "RUSTFLAGS=-D warnings" >> $GITHUB_ENV
+        # Enable faster sparse index on nightly
+        # The value is ignored on stable and causes no problems
+        # https://internals.rust-lang.org/t/call-for-testing-cargo-sparse-registry/16862
+        echo "CARGO_UNSTABLE_SPARSE_REGISTRY=true" >> $GITHUB_ENV
+        # Enable sparse index after stabilization
+        # This causes warnings on stable 1.67, e.g., when using "cargo add"
+        # https://github.com/rust-lang/cargo/pull/11224
+        # echo "CARGO_REGISTRIES_CRATES_IO_PROTOCOL=sparse" >> $GITHUB_ENV
       shell: bash
     - name: "Install Rust Problem Matcher"
       run: echo "::add-matcher::${{ github.action_path }}/rust.json"
@@ -71,7 +79,7 @@ runs:
       run: |
         if ! command -v rustup &> /dev/null ; then
           curl --proto '=https' --tlsv1.2 --retry 10 --retry-connrefused -fsSL "https://sh.rustup.rs" | sh -s -- --default-toolchain none -y
-          echo "${CARGO_HOME:-~/.cargo}/bin" >> $GITHUB_PATH
+          echo "${CARGO_HOME:-$HOME/.cargo}/bin" >> $GITHUB_PATH
         fi
       if: runner.os != 'Windows'
       shell: bash
@@ -91,16 +99,16 @@ runs:
     - name: Print installed versions
       id: versions
       run: |
-        echo "::set-output name=rustc-version::$(rustc --version)"
+        echo "rustc-version=$(rustc --version)" >> $GITHUB_OUTPUT
         rustc --version --verbose
-        echo "::set-output name=cargo-version::$(cargo --version)"
+        echo "cargo-version=$(cargo --version)" >> $GITHUB_OUTPUT
         cargo --version --verbose
-        echo "::set-output name=rustup-version::$(rustup --version)"
+        echo "rustup-version=$(rustup --version)" >> $GITHUB_OUTPUT
         rustup --version
 
         DATE=$(rustc --version --verbose | sed -ne 's/^commit-date: \(20[0-9][0-9]\)-\([01][0-9]\)-\([0-3][0-9]\)$/\1\2\3/p')
         HASH=$(rustc --version --verbose | sed -ne 's/^commit-hash: //p')
-        echo "::set-output name=cachekey::$(echo $DATE$HASH | head -c12)"
+        echo "cachekey=$(echo $DATE$HASH | head -c12)" >> $GITHUB_OUTPUT
       shell: bash
 
     - name: "Setup Rust Caching"