[build] unpin rules_rust (#6620)

bazelbuild/rules_rust#3812 will probably never land

We can't afford to be stuck forever.

Author: mikea

.github/workflows/coverage.yml

@@ -36,6 +36,7 @@ jobs:
       build_container_images: false
       run_coverage: true
       run_tests: false
+      test_target: "//src/workerd/..."
     secrets:
       BAZEL_CACHE_KEY: ${{ secrets.BAZEL_CACHE_KEY }}
       WORKERS_MIRROR_URL: ${{ secrets.WORKERS_MIRROR_URL }}

build/deps/build_deps.jsonc

@@ -69,6 +69,10 @@
       "type": "bazel_dep"
     },
     // rust
+    {
+      "name": "rules_rust",
+      "type": "bazel_dep"
+    },
     {
       "name": "cargo_bazel_linux_x64",
       "type": "github_release",

build/deps/gen/build_deps.MODULE.bazel

@@ -116,6 +116,9 @@ bazel_dep(name = "rules_oci", version = "2.3.0")
 # rules_python
 bazel_dep(name = "rules_python", version = "1.9.0")
 
+# rules_rust
+bazel_dep(name = "rules_rust", version = "0.69.0")
+
 # rules_shell
 bazel_dep(name = "rules_shell", version = "0.8.0")
 

build/deps/rust.MODULE.bazel

@@ -10,20 +10,6 @@ RUST_TARGET_TRIPLES = [
     "aarch64-unknown-linux-gnu",
 ]
 
-# rules_rust
-bazel_dep(name = "rules_rust", version = "0.68.1")
-
-# Under Bazel 9, Rust coverage is broken when using experimental_split_coverage_postprocessing.
-# TODO(cleanup): https://github.com/bazelbuild/rules_rust/pull/3812 should fix this, we're using
-# that commit for now. Switch back to regular release once resolved.
-archive_override(
-    module_name = "rules_rust",
-    integrity = "sha256-dtn87CNPspDl5xEfAGEl0eQ4HBf07vpxIdMNPRHqMqM=",
-    strip_prefix = "bazelbuild-rules_rust-cb9d412",
-    type = "tgz",
-    url = "https://github.com/bazelbuild/rules_rust/tarball/cb9d412afdb95578bd533b60483eecb373119c36",
-)
-
 rust = use_extension("@rules_rust//rust:extensions.bzl", "rust")
 rust.toolchain(
     allocator_library = "@rules_rust//ffi/rs:empty",

build/wd_rust_binary.bzl

@@ -75,4 +75,5 @@ def wd_rust_binary(
             "//conditions:default": [],
         }),
         size = test_size,
+        tags = ["no-coverage"],
     )

build/wd_rust_crate.bzl

@@ -144,7 +144,7 @@ def wd_rust_crate(
             # our tests are usually very heavy and do not support concurrent invocation
             "RUST_TEST_THREADS": "1",
         } | test_env,
-        tags = test_tags,
+        tags = test_tags + ["no-coverage"],
         crate_features = crate_features,
         deps = test_deps,
         proc_macro_deps = test_proc_macro_deps,

build/wd_rust_proc_macro.bzl

@@ -45,6 +45,6 @@ def wd_rust_proc_macro(
             # our tests are usually very heavy and do not support concurrent invocation
             "RUST_TEST_THREADS": "1",
         } | test_env,
-        tags = test_tags,
+        tags = test_tags + ["no-coverage"],
         deps = test_deps,
     )