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-rw-r--r--src/bootstrap/bootstrap.py6
1 files changed, 5 insertions, 1 deletions
diff --git a/src/bootstrap/bootstrap.py b/src/bootstrap/bootstrap.py
index 2ece53eb0cc..19e87f9c293 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")