1 files changed, 8 insertions, 4 deletions
diff --git a/src/bootstrap/bootstrap.py b/src/bootstrap/bootstrap.py
index 2ece53eb0cc..effd33d288f 100644
--- a/src/bootstrap/bootstrap.py
+++ b/src/bootstrap/bootstrap.py
@@ -1039,6 +1039,9 @@ class RustBuild(object):
         # See also: <https://github.com/rust-lang/rust/issues/70208>.
         if "CARGO_BUILD_TARGET" in env:
             del env["CARGO_BUILD_TARGET"]
+        # if in CI, don't use incremental build when building bootstrap.
+        if "GITHUB_ACTIONS" in env:
+            env["CARGO_INCREMENTAL"] = "0"
         env["CARGO_TARGET_DIR"] = build_dir
         env["RUSTC"] = self.rustc()
         env["LD_LIBRARY_PATH"] = (
@@ -1145,7 +1148,8 @@ class RustBuild(object):
             os.path.join(self.rust_root, "src/bootstrap/Cargo.toml"),
             "-Zroot-dir=" + self.rust_root,
         ]
-        args.extend("--verbose" for _ in range(self.verbose))
+        # verbose cargo output is very noisy, so only enable it with -vv
+        args.extend("--verbose" for _ in range(self.verbose - 1))
 
         if "BOOTSTRAP_TRACING" in env:
             args.append("--features=tracing")
@@ -1189,8 +1193,6 @@ class RustBuild(object):
             return "<commit>"
         cmd = [
             "git",
-            "-C",
-            repo_path,
             "rev-list",
             "--author",
             author_email,
@@ -1198,7 +1200,9 @@ class RustBuild(object):
             "HEAD",
         ]
         try:
-            commit = subprocess.check_output(cmd, universal_newlines=True).strip()
+            commit = subprocess.check_output(
+                cmd, universal_newlines=True, cwd=repo_path
+            ).strip()
             return commit or "<commit>"
         except subprocess.CalledProcessError:
             return "<commit>"