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-rw-r--r--src/libstd/time.rs2
1 files changed, 2 insertions, 0 deletions
diff --git a/src/libstd/time.rs b/src/libstd/time.rs
index 1587a059962..da1edbdf895 100644
--- a/src/libstd/time.rs
+++ b/src/libstd/time.rs
@@ -823,6 +823,8 @@ impl tm for tm {
 mod tests {
     import task;
 
+    // FIXME #2160: These tests are all run in the same task because
+    // getenv/setenv interacts poorly with threads on OS X
     #[test]
     fn test_all() {
         test_get_time();