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-rwxr-xr-xsrc/ci/docker/host-x86_64/x86_64-gnu-tools/checktools.sh4
1 files changed, 4 insertions, 0 deletions
diff --git a/src/ci/docker/host-x86_64/x86_64-gnu-tools/checktools.sh b/src/ci/docker/host-x86_64/x86_64-gnu-tools/checktools.sh
index 53b4583166d..a5a5acc333b 100755
--- a/src/ci/docker/host-x86_64/x86_64-gnu-tools/checktools.sh
+++ b/src/ci/docker/host-x86_64/x86_64-gnu-tools/checktools.sh
@@ -8,6 +8,10 @@ X_PY="$1"
 
 # Try to test the toolstate-tracked tools and store the build/test success in the TOOLSTATE_FILE.
 
+# Pre-build the compiler and the library first to output a better error message when the build
+# itself fails (see https://github.com/rust-lang/rust/issues/127869 for context).
+python3 "$X_PY" build --stage 2 compiler rustdoc
+
 set +e
 python3 "$X_PY" test --stage 2 --no-fail-fast \
     src/doc/book \