Combined these are the #4 most verbose warnings during testing. These appear to be existing warnings that have doubled in verbosity due to the e10s version of crashtest now running. > 1014 [NNNNN] WARNING: NS_ENSURE_SUCCESS(rv, rv) failed with result 0x805E000F: file dom/xbl/nsXBLService.cpp, line 732 > 1007 [NNNNN] WARNING: NS_ENSURE_SUCCESS(rv, NS_ERROR_XBL_BLOCKED) failed with result 0x805303F4: file dom/xbl/nsXBLService.cpp, line 900 These warnings [1],[2] show up in the following test suites: > mozilla-central_ubuntu64_vm-debug_test-crashtest-bm115-tests1-linux64-build7.txt:617 > mozilla-central_ubuntu64_vm-debug_test-crashtest-e10s-bm122-tests1-linux64-build2.txt:382 > mozilla-central_ubuntu64_vm-debug_test-mochitest-e10s-4-bm54-tests1-linux64-build9.txt:6 > mozilla-central_ubuntu64_vm-debug_test-mochitest-4-bm120-tests1-linux64-build11.txt:6 > mozilla-central_ubuntu64_vm-debug_test-mochitest-1-bm52-tests1-linux64-build26.txt:2 > mozilla-central_ubuntu64_vm-debug_test-mochitest-e10s-1-bm53-tests1-linux64-build17.txt:1 They shows up in 17 tests. A few of the most prevalent: > 493 - file:///builds/slave/test/build/tests/reftest/tests/dom/base/crashtests/561981-2.html > 480 - file:///builds/slave/test/build/tests/reftest/tests/dom/base/crashtests/561981-1.html > 6 - file:///builds/slave/test/build/tests/reftest/tests/layout/xul/crashtests/433429.xul > 6 - dom/xbl/test/test_bug481558.html > 4 - file:///builds/slave/test/build/tests/reftest/tests/layout/xul/crashtests/407152.xul > 4 - dom/xbl/test/test_bug379959.html > 2 - file:///builds/slave/test/build/tests/reftest/tests/layout/xul/crashtests/464149-1.xul > 2 - file:///builds/slave/test/build/tests/reftest/tests/layout/xul/crashtests/377592-1.svg > 2 - file:///builds/slave/test/build/tests/reftest/tests/layout/generic/crashtests/385885-1.xul > 2 - file:///builds/slave/test/build/tests/reftest/tests/layout/base/crashtests/404218-1.xhtml [1] https://hg.mozilla.org/mozilla-central/annotate/29b2df16e961/dom/xbl/nsXBLService.cpp#l732 [2] https://hg.mozilla.org/mozilla-central/annotate/29b2df16e961/dom/xbl/nsXBLService.cpp#l900

These seem to have gone away, lets go ahead and close this.