Build bazel project as presubmit.

.bazelversion

@@ -1 +1 @@
-7.6.0
+9.2.0

.github/workflows/rust.yml

@@ -69,4 +69,15 @@ jobs:
         cmake --build build --parallel
         cd build
         ctest --output-on-failure --parallel 2
+
+  test_bazel:
+
+    runs-on: ubuntu-latest
+
+    steps:
+    - uses: actions/checkout@v6
+    - name: Build Bazel test project
+      run: |
+        cd examples/build_systems/bazel
+        bazel build --cxxopt=-std=c++20 //:main
 # LINT.ThenChange(//depot/copy.bara.sky)

examples/build_systems/bazel/rust_lib/src/lib.rs

@@ -1,8 +1,9 @@
 // Part of the Crubit project, under the Apache License v2.0 with LLVM
 // Exceptions. See /LICENSE for license information.
 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+use base64::alphabet::Alphabet;
 use base64::engine::general_purpose::PAD;
-use base64::engine::{Alphabet, GeneralPurpose};
+use base64::engine::GeneralPurpose;
 use std::path::{Path, PathBuf};
 
 pub fn add(left: u64, right: u64) -> u64 {

rs_bindings_from_cc/bazel_support/compile_rust.bzl

@@ -120,7 +120,6 @@ def compile_rust(ctx, attr, src, extra_srcs, deps, crate_name, include_coverage,
             compile_data_targets = depset([]),
             owner = ctx.label,
         ),
-        extra_named_deps = extra_named_deps,
         rust_flags = remapped_flags,
         output_hash = output_hash,
         include_coverage = include_coverage,

support/rs_std/erased_future.rs

@@ -8,6 +8,7 @@
 //! Note that this crate is intended to be used as a Crubit support library for cc_bindings_from_rs,
 //! and not intended for direct use by Rust library authors.
 
+use std::future::Future;
 use std::pin::Pin;
 use std::ptr;
 use std::task::{Context, Poll};