Skip long running regression test from r14078.

test/mjsunit/mjsunit.status

Index: test/mjsunit/mjsunit.status
diff --git a/test/mjsunit/mjsunit.status b/test/mjsunit/mjsunit.status
index 1c3602c40bddbb150001a2b596e3db51290f2e2e..8a83afe05f7c24b64f30f77583b8dbccdeb16e56 100644
--- a/test/mjsunit/mjsunit.status
+++ b/test/mjsunit/mjsunit.status
@@ -44,13 +44,17 @@ regress/regress-524: SKIP
 stack-traces-gc: PASS || FAIL
 
 ##############################################################################
-# Too slow in debug mode with --stress-opt
+# Too slow in debug mode with --stress-opt mode.
 compiler/regress-stacktrace-methods: PASS, SKIP if $mode == debug
 compiler/regress-funcaller: PASS, SKIP if $mode == debug
 regress/regress-2318: PASS, SKIP if $mode == debug
 regress/regress-create-exception: PASS, SKIP if $mode == debug
 
 ##############################################################################
+# Too slow in debug mode for GC stress mode.
+regress/regress-crbug-217858: PASS, SKIP if $mode == debug
+
+##############################################################################
 # These use a built-in that's only present in debug mode. They take
 # too long to run in debug mode on ARM and MIPS.
 fuzz-natives-part*: PASS, SKIP if ($mode == release || $arch == arm || $arch == android_arm || $arch == mipsel)