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authorMartin Pool <mbp@sourcefrog.net>2025-06-20 13:27:53 -0700
committerMartin Pool <mbp@sourcefrog.net>2025-06-20 13:27:53 -0700
commit547c72901ad145b40d7271e3ddef2b4ac0c53619 (patch)
tree936a22ebef3a514dba25c1924a44728250e38b0e /src
parent4acf3baecda9c5080bcfdc1ebb4560fbb2a4567e (diff)
Make fail-fast unstable
Diffstat (limited to 'src')
-rw-r--r--src/doc/rustc/src/tests/index.md2
1 files changed, 2 insertions, 0 deletions
diff --git a/src/doc/rustc/src/tests/index.md b/src/doc/rustc/src/tests/index.md
index 7033184e52a..ab96fbcd317 100644
--- a/src/doc/rustc/src/tests/index.md
+++ b/src/doc/rustc/src/tests/index.md
@@ -168,6 +168,8 @@ other threads will be allowed to run to completion before the process exits.
 Note that when running tests in parallel, the test execution order is non-deterministic:
 if multiple tests would fail, the first failure encountered will be reported.
 
+⚠️ 🚧 This requires the `-Z unstable-options` flag.
+
 #### `--test-threads` _NUM_THREADS_
 
 Sets the number of threads to use for running tests in parallel. By default,