fix(ci): heal failed target caches

.gitea/workflows/ci.yml

@@ -91,7 +91,6 @@ jobs:
               if test -n "$previous_target"; then
                 cp -al "$previous_target" "$cargo_target"
                 rm -f -- "$cargo_target/.metacrate-ready"
-                touch "$cargo_target/.metacrate-cloned"
               else
                 mkdir -p "$cargo_target"
               fi
@@ -102,7 +101,6 @@ jobs:
               fi
             done < <(find "$cargo_cache_root" -mindepth 1 -maxdepth 1 -type d -name 'target-rust-1.97.1-aarch64-unknown-linux-gnu-*' -print0)
           ) 9>"$cargo_cache_root/required-target.lock"
-          test -f "$cargo_target/.metacrate-cloned" && cloned_target=true || cloned_target=false
           test -f "$cargo_target/.metacrate-ready" && cargo_hit=true || cargo_hit=false
           test -d "$CARGO_HOME/registry/cache" && dependency_hit=true || dependency_hit=false
           test -f "$openjpeg_prefix/metacrate-openjpeg.identity" && test -f "$skia_archive" && native_hit=true || native_hit=false
@@ -116,7 +114,6 @@ jobs:
           echo "METACRATE_DEPENDENCY_CACHE_HIT=$dependency_hit" >> "$GITHUB_ENV"
           echo "METACRATE_NATIVE_CACHE_HIT=$native_hit" >> "$GITHUB_ENV"
           echo "METACRATE_TOOLS_CACHE_HIT=$tools_hit" >> "$GITHUB_ENV"
-          echo "METACRATE_CARGO_TARGET_CLONED=$cloned_target" >> "$GITHUB_ENV"
 
       - name: Install the single native prerequisite set
         run: |
@@ -161,9 +158,9 @@ jobs:
             python3 tools/normalize_git_mtimes.py --state "$CARGO_TARGET_DIR/.metacrate-mtimes.json"
             python3 tools/normalize_git_mtimes.py --state "$CARGO_TARGET_DIR/.metacrate-mtimes.json" --check
             # Cargo does not fingerprint CARGO_TARGET_DIR in integration-test
-            # binaries. Invalidate only the relocated program integration-test
-            # fingerprints so CARGO_BIN_EXE_* cannot name the pruned directory.
-            if test "$METACRATE_CARGO_TARGET_CLONED" = true; then
+            # binaries. After a clone, interruption, or failed gate, invalidate
+            # only those fingerprints so CARGO_BIN_EXE_* cannot stay poisoned.
+            if test "$METACRATE_CARGO_CACHE_HIT" != true; then
               fingerprint_root="$CARGO_TARGET_DIR/debug/.fingerprint"
               fingerprint_list="$CARGO_TARGET_DIR/.metacrate-relocated-fingerprints"
               if test -d "$fingerprint_root"; then
@@ -174,7 +171,7 @@ jobs:
                   rm -rf -- "$integration_fingerprint"
                 done < "$fingerprint_list"
               fi
-              rm -f -- "$fingerprint_list" "$CARGO_TARGET_DIR/.metacrate-cloned"
+              rm -f -- "$fingerprint_list"
             fi
             cargo run --locked -p metacrate-ci-matrix -- required-gate --evidence artifacts/ci/required-gate.json
             touch "$CARGO_TARGET_DIR/.metacrate-ready"