Merge branch 'main' into sy/sync-multithreading

Author: TartanLlama

.github/actions/install-rust/action.yml

@@ -32,31 +32,11 @@ runs:
         elif [ "${{ inputs.toolchain }}" = "msrv" ]; then
           echo "version=1.$msrv.0" >> "$GITHUB_OUTPUT"
         elif [ "${{ inputs.toolchain }}" = "wasmtime-ci-pinned-nightly" ]; then
-          echo "version=nightly-2025-11-01" >> "$GITHUB_OUTPUT"
+          echo "version=nightly-2025-11-25" >> "$GITHUB_OUTPUT"
         else
           echo "version=${{ inputs.toolchain }}" >> "$GITHUB_OUTPUT"
         fi
 
-
-    # GitHub Actions default runners have `rustup` instaleld, but IBM-provided
-    # s390x runners do not. If we're using the IBM runner then install rustup.
-    - name: Install rustup
-      shell: bash
-      if: runner.arch == 'S390X'
-      run: |
-        export RUSTUP_HOME=${{ runner.tool_cache }}/rustup
-        export CARGO_HOME=${{ runner.tool_cache }}/cargo
-        curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | \
-          sh -s -- \
-            -y \
-            --default-toolchain ${{ steps.select.outputs.version }} \
-            --profile minimal \
-            --no-modify-path
-        echo "RUSTUP_HOME=$RUSTUP_HOME" >> $GITHUB_ENV
-        echo "CARGO_HOME=$CARGO_HOME" >> $GITHUB_ENV
-        echo "$CARGO_HOME/bin" >> $GITHUB_PATH
-
-
     - name: Install Rust
       shell: bash
       run: |

.github/workflows/triage.yml

@@ -1,8 +1,6 @@
 name: "Issue / PR Triage"
 
 on:
-  issues:
-    types: ["labeled"]
   schedule:
     # Run pull request triage once an hour. Ideally, this would be on
     # "labeled" types of pull request events, but that doesn't work if the pull