Just assume rustc is in the container

.github/workflows/compilers.yml

@@ -202,9 +202,9 @@ jobs:
 #         - { name: VM_DEBUG_BP_CHECK,              env: { cppflags: '-DVM_DEBUG_BP_CHECK' } }
 #         - { name: VM_DEBUG_VERIFY_METHOD_CACHE,   env: { cppflags: '-DVM_DEBUG_VERIFY_METHOD_CACHE' } }
 
-          - { name: enable-yjit,                    env: { append_configure: '--enable-yjit --disable-rjit' }, rust: true }
+          - { name: enable-yjit,                    env: { append_configure: '--enable-yjit --disable-rjit' } }
           - { name: enable-rjit,                    env: { append_configure: '--enable-rjit --disable-yjit' } }
-          - { name: YJIT_FORCE_ENABLE,              env: { cppflags: '-DYJIT_FORCE_ENABLE' }, rust: true }
+          - { name: YJIT_FORCE_ENABLE,              env: { cppflags: '-DYJIT_FORCE_ENABLE' } }
 #         - { name: RJIT_FORCE_ENABLE,              env: { cppflags: '-DRJIT_FORCE_ENABLE' } }
 
     name: ${{ matrix.entry.name }}
@@ -239,14 +239,6 @@ jobs:
           builddir: build
           makeup: true
 
-      - name: Install Rust
-        if: ${{ matrix.entry.rust }}
-        run: |
-          command -v rustc ||
-          {
-            sudo apt-get update && sudo apt install -y rustc
-          }
-
       - name: Run configure
         run: >
           ../src/configure -C ${default_configure} ${append_configure}