--- a/testing/mozharness/mozharness/mozilla/testing/errors.py
+++ b/testing/mozharness/mozharness/mozilla/testing/errors.py
@@ -101,14 +101,19 @@ TinderBoxPrintRe = {
         'retry_regex': re.compile(r'''(FAIL-SHOULD-RETRY|No space left on device|DMError|Connection to the other side was lost in a non-clean fashion|program finished with exit code 80|INFRA-ERROR|twisted.spread.pb.PBConnectionLost)''')
     },
 }
 
 TestPassed = [
     {'regex': re.compile('''(TEST-INFO|TEST-KNOWN-FAIL|TEST-PASS|INFO \| )'''), 'level': INFO},
 ]
 
+HarnessErrorList = [
+    {'substr': 'TEST-UNEXPECTED', 'level': ERROR, },
+    {'substr': 'PROCESS-CRASH', 'level': ERROR, },
+]
+
 LogcatErrorList = [
     {'substr': 'Fatal signal 11 (SIGSEGV)', 'level': ERROR, 'explanation': 'This usually indicates the B2G process has crashed'},
     {'substr': 'Fatal signal 7 (SIGBUS)', 'level': ERROR, 'explanation': 'This usually indicates the B2G process has crashed'},
     {'substr': '[JavaScript Error:', 'level': WARNING},
     {'substr': 'seccomp sandbox violation', 'level': ERROR, 'explanation': 'A content process has violated the system call sandbox (bug 790923)'},
 ]

--- a/testing/mozharness/scripts/desktop_unittest.py
+++ b/testing/mozharness/scripts/desktop_unittest.py
@@ -24,16 +24,17 @@ sys.path.insert(1, os.path.dirname(sys.p
 from mozharness.base.errors import BaseErrorList
 from mozharness.base.log import INFO, ERROR
 from mozharness.base.script import PreScriptAction
 from mozharness.base.vcs.vcsbase import MercurialScript
 from mozharness.mozilla.blob_upload import BlobUploadMixin, blobupload_config_options
 from mozharness.mozilla.buildbot import TBPL_EXCEPTION
 from mozharness.mozilla.mozbase import MozbaseMixin
 from mozharness.mozilla.structuredlog import StructuredOutputParser
+from mozharness.mozilla.testing.errors import HarnessErrorList
 from mozharness.mozilla.testing.unittest import DesktopUnittestOutputParser
 from mozharness.mozilla.testing.codecoverage import (
     CodeCoverageMixin,
     code_coverage_config_options
 )
 from mozharness.mozilla.testing.testbase import TestingMixin, testing_config_options
 
 SUITE_CATEGORIES = ['gtest', 'cppunittest', 'jittest', 'mochitest', 'reftest', 'xpcshell', 'mozbase', 'mozmill']
@@ -671,20 +672,17 @@ class DesktopUnittest(TestingMixin, Merc
                                               try_options,
                                               str_format_values=replace_dict))
                 cmd.extend(self.query_tests_args(tests_list,
                                                  try_tests,
                                                  str_format_values=replace_dict))
 
                 suite_name = suite_category + '-' + suite
                 tbpl_status, log_level = None, None
-                error_list = BaseErrorList + [{
-                    'regex': re.compile(r'''PROCESS-CRASH.*application crashed'''),
-                    'level': ERROR,
-                }]
+                error_list = BaseErrorList + HarnessErrorList
                 parser = self.get_test_output_parser(suite_category,
                                                      flavor=flavor,
                                                      config=self.config,
                                                      error_list=error_list,
                                                      log_obj=self.log_obj)
 
                 if suite_category == "reftest":
                     ref_formatter = imp.load_source(