Bug 1318755 - Disable this test until it can be fixed a=me

testing/web-platform/meta/WebCryptoAPI/derive_bits_keys/hkdf.worker.js.ini

@@ -4865,6 +4865,8 @@
 
 [hkdf.worker.html]
   type: testharness
+  disabled:
+    if debug and (os == "linux") and (bits == 32): https://bugzilla.mozilla.org/show_bug.cgi?id=1318755
   expected:
     if debug and e10s and (os == "linux") and (version == "Ubuntu 12.04") and (processor == "x86") and (bits == 32): TIMEOUT
     if debug and not e10s and (os == "linux") and (version == "Ubuntu 12.04") and (processor == "x86") and (bits == 32): TIMEOUT