[Bazel CI] SyntaxTests are failing at Bazel@HEAD

[sgowroji]

CI: https://buildkite.com/bazel/bazel-at-head-plus-downstream/builds/3813#018f136e-e3b1-4f40-b7ad-0c472619a0d0

Platform: MacOS

Logs:

FAILED: �[0m//src/test/java/net/starlark/java/syntax:SyntaxTests (Summary)

Culprit:

Steps:

git clone https://github.com/bazelbuild/bazel
git reset 1ff310b89da8c2050f12178fa9c8b57165afe1f0  --hard
export USE_BAZEL_VERSION=1ff310b89da8c2050f12178fa9c8b57165afe1f0
bazel test //scripts/... //src/main/starlark/tests/builtins_bzl/... //src/test/... //src/tools/execlog/... //src/tools/singlejar/... //src/tools/workspacelog/... //third_party/ijar/... //tools/android/... //tools/aquery_differ/... //tools/python/... //tools/bash/... -//src/test/java/com/google/devtools/build/lib/platform:SystemMemoryPressureEventTest -//src/test/shell/bazel/android/... -//src/tools/android/java/com/google/devtools/build/android/... -//src/test/java/com/google/devtools/build/android/dexer:AllTests 

CC Greenteam @Wyverald

[hvadehra]

Passed on a rerun, and later builds don't have this, so likely a flake.