fixup! wip2

.gitea/workflows/test.yaml

@@ -32,7 +32,6 @@ jobs:
         include:
           - build: linux-amd64
             os: ubuntu-latest
-            rust: stable
             target: x86_64-unknown-linux-gnu
     steps:
       - uses: actions/checkout@v3
@@ -41,12 +40,16 @@ jobs:
         run: |
           apt-get update
           apt-get install -y libdbus-1-dev pkg-config mandoc libssl-dev make
+      - name: Find meli MSRV from meli/Cargo.toml.
+        run: echo MELI_MSRV=$(grep -m1 rust-version meli/Cargo.toml | head -n1 | cut -d'"' -f 2 | head -n1) >> $GITHUB_ENV
+      - name: Configure cargo data directory
+        run: echo "CARGO_HOME=$(pwd)/.cargo" >> $GITHUB_ENV
       - id: cache-rustup
         name: Cache Rust toolchain
-        uses: https://github.com/Swatinem/rust-cache@v2
+        uses: https://code.forgejo.org/actions/cache@v4
         with:
           path: ~/.rustup
-          key: toolchain-${{ matrix.os }}-${{ matrix.rust }}
+          key: toolchain-${{ matrix.os }}-${{ env.MELI_MSRV }}
       - if: ${{ steps.cache-rustup.outputs.cache-hit != 'true' }}
         id: rustup-setup
         name: Install rustup and toolchains
@@ -56,21 +59,15 @@ jobs:
             curl --proto '=https' --tlsv1.2 --retry 10 --retry-connrefused --location --silent --show-error --fail "https://sh.rustup.rs" | sh -s -- --default-toolchain none -y
             source "${HOME}/.cargo/env"
             echo "${CARGO_HOME:-$HOME/.cargo}/bin" >> $GITHUB_PATH
-            rustup toolchain install --profile minimal ${{ matrix.rust }} --target ${{ matrix.target }}
+            rustup toolchain install --profile minimal --target "${{ matrix.target }}" -- "${{ env.MELI_MSRV }}"
+            rustup default ${{ env.MELI_MSRV }}
           fi
-      - name: Configure cargo data directory
-        # After this point, all cargo registry and crate data is stored in
-        # $GITHUB_WORKSPACE/.cargo_home. This allows us to cache only the files
-        # that are needed during the build process. Additionally, this works
-        # around a bug in the 'cache' action that causes directories outside of
-        # the workspace dir to be saved/restored incorrectly.
-        run: echo "CARGO_HOME=$(pwd)/.cargo_home" >> $GITHUB_ENV
       - id: cache-cargo
         name: Cache cargo configuration and installations
         uses: https://github.com/Swatinem/rust-cache@v2
         with:
           path: ${{ env.CARGO_HOME }}
-          key: cargo-${{ matrix.os }}-${{ matrix.rust }}
+          key: cargo-${{ matrix.os }}-${{ env.MELI_MSRV }}
       - if: ${{ steps.cache-cargo.outputs.cache-hit != 'true' }} && matrix.target
         name: Setup Rust target
         run: |