diff --git a/tests/hghave.py b/tests/hghave.py
--- a/tests/hghave.py
+++ b/tests/hghave.py
@@ -264,6 +264,13 @@
     return not (new_file_has_exec or exec_flags_cannot_flip)
 
 
+@check("suidbit", "setuid and setgid bit")
+def has_suidbit():
+    if not hasattr(os, "statvfs") or not hasattr(os, "ST_NOSUID"):
+        return False
+    return bool(os.statvfs('.').f_flag & os.ST_NOSUID)
+
+
 @check("icasefs", "case insensitive file system")
 def has_icasefs():
     # Stolen from mercurial.util
diff --git a/tests/test-remotefilelog-permissions.t b/tests/test-remotefilelog-permissions.t
--- a/tests/test-remotefilelog-permissions.t
+++ b/tests/test-remotefilelog-permissions.t
@@ -33,6 +33,8 @@
 
   $ chmod -R u+w master/.hg/remotefilelogcache
 
+#if suidbit
+
 # Test setting up shared cache with the right permissions
 # (this is hard to test in a cross platform way, so we just make sure nothing
 # crashes)
@@ -44,3 +46,5 @@
   1 files fetched over 1 fetches - (1 misses, 0.00% hit ratio) over * (glob)
   $ ls -ld $CACHEDIR/11
   drwxrws* $TESTTMP/hgcache/11 (glob)
+
+#endif