tests/test-runner/bin/zts-report.py.in

   1 #!/usr/bin/env @PYTHON_SHEBANG@
   2
   3 #
   4 # This file and its contents are supplied under the terms of the
   5 # Common Development and Distribution License ("CDDL"), version 1.0.
   6 # You may only use this file in accordance with the terms of version
   7 # 1.0 of the CDDL.
   8 #
   9 # A full copy of the text of the CDDL should have accompanied this
  10 # source.  A copy of the CDDL is also available via the Internet at
  11 # http://www.illumos.org/license/CDDL.
  12 #
  13
  14 #
  15 # Copyright (c) 2017 by Delphix. All rights reserved.
  16 # Copyright (c) 2018 by Lawrence Livermore National Security, LLC.
  17 #
  18 # This script must remain compatible with Python 3.6+.
  19 #
  20
  21 import os
  22 import re
  23 import sys
  24 import argparse
  25
  26 #
  27 # This script parses the stdout of zfstest, which has this format:
  28 #
  29 # Test: /path/to/testa (run as root) [00:00] [PASS]
  30 # Test: /path/to/testb (run as jkennedy) [00:00] [PASS]
  31 # Test: /path/to/testc (run as root) [00:00] [FAIL]
  32 # [...many more results...]
  33 #
  34 # Results Summary
  35 # FAIL      22
  36 # SKIP      32
  37 # PASS    1156
  38 #
  39 # Running Time:   02:50:31
  40 # Percent passed: 95.5%
  41 # Log directory:  /var/tmp/test_results/20180615T205926
  42 #
  43
  44 #
  45 # Common generic reasons for a test or test group to be skipped.
  46 #
  47 # Some test cases are known to fail in ways which are not harmful or dangerous.
  48 # In these cases simply mark the test as a known failure until it can be
  49 # updated and the issue resolved.  Note that it's preferable to open a unique
  50 # issue on the GitHub issue tracker for each test case failure.
  51 #
  52 known_reason = 'Known issue'
  53
  54 #
  55 # Some tests require that a test user be able to execute the zfs utilities.
  56 # This may not be possible when testing in-tree due to the default permissions
  57 # on the user's home directory.  When testing this can be resolved by granting
  58 # group read access.
  59 #
  60 # chmod 0750 $HOME
  61 #
  62 exec_reason = 'Test user execute permissions required for utilities'
  63
  64 #
  65 # Some tests require that the kernel supports renameat2 syscall.
  66 #
  67 renameat2_reason = 'Kernel renameat2 support required'
  68
  69 #
  70 # Some tests require the statx(2) system call on Linux which was first
  71 # introduced in the 4.11 kernel.
  72 #
  73 statx_reason = 'Kernel statx(2) system call required on Linux'
  74
  75 #
  76 # Some tests require that the lsattr utility support the project id feature.
  77 #
  78 project_id_reason = 'lsattr with set/show project ID required'
  79
  80 #
  81 # Some tests require that the kernel support user namespaces.
  82 #
  83 user_ns_reason = 'Kernel user namespace support required'
  84
  85 #
  86 # Some rewind tests can fail since nothing guarantees that old MOS blocks
  87 # are not overwritten.  Snapshots protect datasets and data files but not
  88 # the MOS.  Reasonable efforts are made in the test case to increase the
  89 # odds that some txgs will have their MOS data left untouched, but it is
  90 # never a sure thing.
  91 #
  92 rewind_reason = 'Arbitrary pool rewind is not guaranteed'
  93
  94 #
  95 # Some tests require a minimum version of the fio benchmark utility.
  96 # Older distributions such as CentOS 6.x only provide fio-2.0.13.
  97 #
  98 fio_reason = 'Fio v2.3 or newer required'
  99
 100 #
 101 # Some tests require that the DISKS provided support the discard operation.
 102 # Normally this is not an issue because loop back devices are used for DISKS
 103 # and they support discard (TRIM/UNMAP).
 104 #
 105 trim_reason = 'DISKS must support discard (TRIM/UNMAP)'
 106
 107 #
 108 # Some tests on FreeBSD require the fspacectl(2) system call and the
 109 # truncate(1) utility supporting the -d option.  The system call was first
 110 # introduced in FreeBSD version 1400032.
 111 #
 112 fspacectl_reason = 'fspacectl(2) and truncate -d support required'
 113
 114 #
 115 # Some tests are not applicable to a platform or need to be updated to operate
 116 # in the manor required by the platform.  Any tests which are skipped for this
 117 # reason will be suppressed in the final analysis output.
 118 #
 119 na_reason = "Not applicable"
 120
 121 #
 122 # Idmapped mount is only supported in kernel version >= 5.12
 123 #
 124 idmap_reason = 'Idmapped mount needs kernel 5.12+'
 125
 126 #
 127 # copy_file_range() is not supported by all kernels
 128 #
 129 cfr_reason = 'Kernel copy_file_range support required'
 130
 131 if sys.platform.startswith('freebsd'):
 132     cfr_cross_reason = 'copy_file_range(2) cross-filesystem needs FreeBSD 14+'
 133 else:
 134     cfr_cross_reason = 'copy_file_range(2) cross-filesystem needs kernel 5.3+'
 135
 136 #
 137 # These tests are known to fail, thus we use this list to prevent these
 138 # failures from failing the job as a whole; only unexpected failures
 139 # bubble up to cause this script to exit with a non-zero exit status.
 140 #
 141 # Format: { 'test-name': ['expected result', 'issue-number | reason'] }
 142 #
 143 # For each known failure it is recommended to link to a GitHub issue by
 144 # setting the reason to the issue number.  Alternately, one of the generic
 145 # reasons listed above can be used.
 146 #
 147 known = {
 148     'casenorm/mixed_none_lookup_ci': ['FAIL', 7633],
 149     'casenorm/mixed_formd_lookup_ci': ['FAIL', 7633],
 150     'cli_root/zpool_import/import_rewind_device_replaced':
 151         ['FAIL', rewind_reason],
 152     'cli_user/misc/zfs_share_001_neg': ['SKIP', na_reason],
 153     'cli_user/misc/zfs_unshare_001_neg': ['SKIP', na_reason],
 154     'pool_checkpoint/checkpoint_discard_busy': ['SKIP', 12053],
 155     'privilege/setup': ['SKIP', na_reason],
 156     'refreserv/refreserv_004_pos': ['FAIL', known_reason],
 157     'rootpool/setup': ['SKIP', na_reason],
 158     'rsend/rsend_008_pos': ['SKIP', 6066],
 159     'vdev_zaps/vdev_zaps_007_pos': ['FAIL', known_reason],
 160 }
 161
 162 if sys.platform.startswith('freebsd'):
 163     known.update({
 164         'cli_root/zfs_receive/receive-o-x_props_override':
 165             ['FAIL', known_reason],
 166         'cli_root/zpool_resilver/zpool_resilver_concurrent':
 167             ['SKIP', na_reason],
 168         'cli_root/zpool_wait/zpool_wait_trim_basic': ['SKIP', trim_reason],
 169         'cli_root/zpool_wait/zpool_wait_trim_cancel': ['SKIP', trim_reason],
 170         'cli_root/zpool_wait/zpool_wait_trim_flag': ['SKIP', trim_reason],
 171         'cli_root/zfs_unshare/zfs_unshare_008_pos': ['SKIP', na_reason],
 172         'cp_files/cp_files_002_pos': ['SKIP', na_reason],
 173         'link_count/link_count_001': ['SKIP', na_reason],
 174         'mmap/mmap_sync_001_pos': ['SKIP', na_reason],
 175         'rsend/send_raw_ashift': ['SKIP', 14961],
 176     })
 177 elif sys.platform.startswith('linux'):
 178     known.update({
 179         'casenorm/mixed_formd_lookup': ['FAIL', 7633],
 180         'casenorm/mixed_formd_delete': ['FAIL', 7633],
 181         'casenorm/sensitive_formd_lookup': ['FAIL', 7633],
 182         'casenorm/sensitive_formd_delete': ['FAIL', 7633],
 183         'removal/removal_with_zdb': ['SKIP', known_reason],
 184         'cli_root/zfs_unshare/zfs_unshare_002_pos': ['SKIP', na_reason],
 185     })
 186
 187
 188 #
 189 # These tests may occasionally fail or be skipped.  We want there failures
 190 # to be reported but only unexpected failures should bubble up to cause
 191 # this script to exit with a non-zero exit status.
 192 #
 193 # Format: { 'test-name': ['expected result', 'issue-number | reason'] }
 194 #
 195 # For each known failure it is recommended to link to a GitHub issue by
 196 # setting the reason to the issue number.  Alternately, one of the generic
 197 # reasons listed above can be used.
 198 #
 199 maybe = {
 200     'append/threadsappend_001_pos': ['FAIL', 6136],
 201     'chattr/setup': ['SKIP', exec_reason],
 202     'crtime/crtime_001_pos': ['SKIP', statx_reason],
 203     'cli_root/zdb/zdb_006_pos': ['FAIL', known_reason],
 204     'cli_root/zfs_copies/zfs_copies_006_pos': ['FAIL', known_reason],
 205     'cli_root/zfs_destroy/zfs_destroy_dev_removal_condense':
 206         ['FAIL', known_reason],
 207     'cli_root/zfs_get/zfs_get_004_pos': ['FAIL', known_reason],
 208     'cli_root/zfs_get/zfs_get_009_pos': ['SKIP', 5479],
 209     'cli_root/zfs_rollback/zfs_rollback_001_pos': ['FAIL', known_reason],
 210     'cli_root/zfs_rollback/zfs_rollback_002_pos': ['FAIL', known_reason],
 211     'cli_root/zfs_share/zfs_share_concurrent_shares': ['FAIL', known_reason],
 212     'cli_root/zfs_snapshot/zfs_snapshot_002_neg': ['FAIL', known_reason],
 213     'cli_root/zfs_unshare/zfs_unshare_006_pos': ['SKIP', na_reason],
 214     'cli_root/zpool_add/zpool_add_004_pos': ['FAIL', known_reason],
 215     'cli_root/zpool_destroy/zpool_destroy_001_pos': ['SKIP', 6145],
 216     'cli_root/zpool_import/zpool_import_missing_003_pos': ['SKIP', 6839],
 217     'cli_root/zpool_initialize/zpool_initialize_import_export':
 218         ['FAIL', 11948],
 219     'cli_root/zpool_initialize/zpool_initialize_suspend_resume':
 220         ['FAIL', known_reason],
 221     'cli_root/zpool_labelclear/zpool_labelclear_removed':
 222         ['FAIL', known_reason],
 223     'cli_root/zpool_trim/setup': ['SKIP', trim_reason],
 224     'cli_root/zpool_trim/zpool_trim_fault_export_import_online':
 225         ['FAIL', known_reason],
 226     'cli_root/zpool_upgrade/zpool_upgrade_004_pos': ['FAIL', 6141],
 227     'cli_user/misc/arc_summary_001_pos': ['FAIL', known_reason],
 228     'delegate/setup': ['SKIP', exec_reason],
 229     'events/zed_cksum_config': ['FAIL', known_reason],
 230     'fault/auto_replace_002_pos': ['FAIL', known_reason],
 231     'fallocate/fallocate_punch-hole': ['SKIP', fspacectl_reason],
 232     'history/history_004_pos': ['FAIL', 7026],
 233     'history/history_005_neg': ['FAIL', 6680],
 234     'history/history_006_neg': ['FAIL', 5657],
 235     'history/history_008_pos': ['FAIL', known_reason],
 236     'history/history_010_pos': ['SKIP', exec_reason],
 237     'io/mmap': ['SKIP', fio_reason],
 238     'l2arc/l2arc_l2miss_pos': ['FAIL', known_reason],
 239     'l2arc/persist_l2arc_005_pos': ['FAIL', known_reason],
 240     'largest_pool/largest_pool_001_pos': ['FAIL', known_reason],
 241     'mmap/mmap_sync_001_pos': ['FAIL', known_reason],
 242     'mmp/mmp_on_uberblocks': ['FAIL', known_reason],
 243     'pam/setup': ['SKIP', "pamtester might be not available"],
 244     'pool_checkpoint/checkpoint_discard_busy': ['FAIL', 11946],
 245     'projectquota/setup': ['SKIP', exec_reason],
 246     'raidz/raidz_002_pos': ['FAIL', known_reason],
 247     'raidz/raidz_expand_001_pos': ['FAIL', 16421],
 248     'redundancy/redundancy_draid_spare1': ['FAIL', known_reason],
 249     'redundancy/redundancy_draid_spare3': ['FAIL', known_reason],
 250     'removal/removal_condense_export': ['FAIL', known_reason],
 251     'renameat2/setup': ['SKIP', renameat2_reason],
 252     'reservation/reservation_008_pos': ['FAIL', 7741],
 253     'reservation/reservation_018_pos': ['FAIL', 5642],
 254     'snapshot/clone_001_pos': ['FAIL', known_reason],
 255     'snapshot/snapshot_006_pos': ['FAIL', known_reason],
 256     'snapshot/snapshot_009_pos': ['FAIL', 7961],
 257     'snapshot/snapshot_010_pos': ['FAIL', 7961],
 258     'snapused/snapused_004_pos': ['FAIL', 5513],
 259     'trim/setup': ['SKIP', trim_reason],
 260     'upgrade/upgrade_projectquota_001_pos': ['SKIP', project_id_reason],
 261     'upgrade/upgrade_projectquota_002_pos': ['SKIP', project_id_reason],
 262     'user_namespace/setup': ['SKIP', user_ns_reason],
 263     'userquota/setup': ['SKIP', exec_reason],
 264     'vdev_zaps/vdev_zaps_004_pos': ['FAIL', known_reason],
 265     'zvol/zvol_ENOSPC/zvol_ENOSPC_001_pos': ['FAIL', 5848],
 266 }
 267
 268 if sys.platform.startswith('freebsd'):
 269     maybe.update({
 270         'cli_root/zfs_copies/zfs_copies_002_pos': ['FAIL', known_reason],
 271         'cli_root/zfs_inherit/zfs_inherit_001_neg': ['FAIL', known_reason],
 272         'cli_root/zpool_import/zpool_import_012_pos': ['FAIL', known_reason],
 273         'delegate/zfs_allow_003_pos': ['FAIL', known_reason],
 274         'inheritance/inherit_001_pos': ['FAIL', 11829],
 275         'pool_checkpoint/checkpoint_big_rewind': ['FAIL', 12622],
 276         'pool_checkpoint/checkpoint_indirect': ['FAIL', 12623],
 277         'resilver/resilver_restart_001': ['FAIL', known_reason],
 278         'snapshot/snapshot_002_pos': ['FAIL', '14831'],
 279         'bclone/bclone_crossfs_corner_cases': ['SKIP', cfr_cross_reason],
 280         'bclone/bclone_crossfs_corner_cases_limited':
 281             ['SKIP', cfr_cross_reason],
 282         'bclone/bclone_crossfs_data': ['SKIP', cfr_cross_reason],
 283         'bclone/bclone_crossfs_embedded': ['SKIP', cfr_cross_reason],
 284         'bclone/bclone_crossfs_hole': ['SKIP', cfr_cross_reason],
 285         'bclone/bclone_diffprops_all': ['SKIP', cfr_cross_reason],
 286         'bclone/bclone_diffprops_checksum': ['SKIP', cfr_cross_reason],
 287         'bclone/bclone_diffprops_compress': ['SKIP', cfr_cross_reason],
 288         'bclone/bclone_diffprops_copies': ['SKIP', cfr_cross_reason],
 289         'bclone/bclone_diffprops_recordsize': ['SKIP', cfr_cross_reason],
 290         'bclone/bclone_prop_sync': ['SKIP', cfr_cross_reason],
 291         'block_cloning/block_cloning_cross_enc_dataset':
 292             ['SKIP', cfr_cross_reason],
 293         'block_cloning/block_cloning_copyfilerange_cross_dataset':
 294             ['SKIP', cfr_cross_reason]
 295     })
 296 elif sys.platform.startswith('linux'):
 297     maybe.update({
 298         'bclone/bclone_crossfs_corner_cases': ['SKIP', cfr_cross_reason],
 299         'bclone/bclone_crossfs_corner_cases_limited':
 300             ['SKIP', cfr_cross_reason],
 301         'bclone/bclone_crossfs_data': ['SKIP', cfr_cross_reason],
 302         'bclone/bclone_crossfs_embedded': ['SKIP', cfr_cross_reason],
 303         'bclone/bclone_crossfs_hole': ['SKIP', cfr_cross_reason],
 304         'bclone/bclone_diffprops_all': ['SKIP', cfr_cross_reason],
 305         'bclone/bclone_diffprops_checksum': ['SKIP', cfr_cross_reason],
 306         'bclone/bclone_diffprops_compress': ['SKIP', cfr_cross_reason],
 307         'bclone/bclone_diffprops_copies': ['SKIP', cfr_cross_reason],
 308         'bclone/bclone_diffprops_recordsize': ['SKIP', cfr_cross_reason],
 309         'bclone/bclone_prop_sync': ['SKIP', cfr_cross_reason],
 310         'bclone/bclone_samefs_corner_cases': ['SKIP', cfr_reason],
 311         'bclone/bclone_samefs_corner_cases_limited': ['SKIP', cfr_reason],
 312         'bclone/bclone_samefs_data': ['SKIP', cfr_reason],
 313         'bclone/bclone_samefs_embedded': ['SKIP', cfr_reason],
 314         'bclone/bclone_samefs_hole': ['SKIP', cfr_reason],
 315         'block_cloning/block_cloning_clone_mmap_cached': ['SKIP', cfr_reason],
 316         'block_cloning/block_cloning_clone_mmap_write':
 317             ['SKIP', cfr_reason],
 318         'block_cloning/block_cloning_copyfilerange':
 319             ['SKIP', cfr_reason],
 320         'block_cloning/block_cloning_copyfilerange_cross_dataset':
 321             ['SKIP', cfr_cross_reason],
 322         'block_cloning/block_cloning_copyfilerange_fallback':
 323             ['SKIP', cfr_reason],
 324         'block_cloning/block_cloning_copyfilerange_fallback_same_txg':
 325             ['SKIP', cfr_cross_reason],
 326         'block_cloning/block_cloning_copyfilerange_partial':
 327             ['SKIP', cfr_reason],
 328         'block_cloning/block_cloning_cross_enc_dataset':
 329             ['SKIP', cfr_cross_reason],
 330         'block_cloning/block_cloning_disabled_copyfilerange':
 331             ['SKIP', cfr_reason],
 332         'block_cloning/block_cloning_lwb_buffer_overflow':
 333             ['SKIP', cfr_reason],
 334         'block_cloning/block_cloning_replay':
 335             ['SKIP', cfr_reason],
 336         'block_cloning/block_cloning_replay_encrypted':
 337             ['SKIP', cfr_reason],
 338         'block_cloning/block_cloning_rlimit_fsize':
 339             ['SKIP', cfr_reason],
 340         'cli_root/zfs_rename/zfs_rename_002_pos': ['FAIL', known_reason],
 341         'cli_root/zpool_reopen/zpool_reopen_003_pos': ['FAIL', known_reason],
 342         'cp_files/cp_files_002_pos': ['SKIP', cfr_reason],
 343         'fault/auto_online_002_pos': ['FAIL', 11889],
 344         'fault/auto_replace_001_pos': ['FAIL', 14851],
 345         'fault/auto_spare_002_pos': ['FAIL', 11889],
 346         'fault/auto_spare_multiple': ['FAIL', 11889],
 347         'fault/auto_spare_shared': ['FAIL', 11889],
 348         'fault/decompress_fault': ['FAIL', 11889],
 349         'idmap_mount/idmap_mount_001': ['SKIP', idmap_reason],
 350         'idmap_mount/idmap_mount_002': ['SKIP', idmap_reason],
 351         'idmap_mount/idmap_mount_003': ['SKIP', idmap_reason],
 352         'idmap_mount/idmap_mount_004': ['SKIP', idmap_reason],
 353         'idmap_mount/idmap_mount_005': ['SKIP', idmap_reason],
 354         'io/io_uring': ['SKIP', 'io_uring support required'],
 355         'limits/filesystem_limit': ['SKIP', known_reason],
 356         'limits/snapshot_limit': ['SKIP', known_reason],
 357         'mmp/mmp_active_import': ['FAIL', known_reason],
 358         'mmp/mmp_exported_import': ['FAIL', known_reason],
 359         'mmp/mmp_inactive_import': ['FAIL', known_reason],
 360     })
 361
 362
 363 def process_results(pathname):
 364     try:
 365         f = open(pathname, errors='replace')
 366     except IOError as e:
 367         print('Error opening file:', e)
 368         sys.exit(1)
 369
 370     prefix = '/zfs-tests/tests/(?:functional|perf/regression)/'
 371     pattern = \
 372         r'^Test(?:\s+\(\S+\))?:' + \
 373         rf'\s*\S*{prefix}(\S+)' + \
 374         r'\s*\(run as (\S+)\)\s*\[(\S+)\]\s*\[(\S+)\]'
 375     pattern_log = r'^\s*Log directory:\s*(\S*)'
 376
 377     d = {}
 378     logdir = 'Could not determine log directory.'
 379     for line in f.readlines():
 380         m = re.match(pattern, line)
 381         if m and len(m.groups()) == 4:
 382             d[m.group(1)] = m.group(4)
 383             continue
 384
 385         m = re.match(pattern_log, line)
 386         if m:
 387             logdir = m.group(1)
 388
 389     return d, logdir
 390
 391
 392 class ListMaybesAction(argparse.Action):
 393     def __init__(self,
 394                  option_strings,
 395                  dest="SUPPRESS",
 396                  default="SUPPRESS",
 397                  help="list flaky tests and exit"):
 398         super(ListMaybesAction, self).__init__(
 399             option_strings=option_strings,
 400             dest=dest,
 401             default=default,
 402             nargs=0,
 403             help=help)
 404
 405     def __call__(self, parser, namespace, values, option_string=None):
 406         for test in maybe:
 407             print(test)
 408         sys.exit(0)
 409
 410
 411 if __name__ == "__main__":
 412     parser = argparse.ArgumentParser(description='Analyze ZTS logs')
 413     parser.add_argument('logfile')
 414     parser.add_argument('--list-maybes', action=ListMaybesAction)
 415     parser.add_argument('--no-maybes', action='store_false', dest='maybes')
 416     args = parser.parse_args()
 417
 418     results, logdir = process_results(args.logfile)
 419
 420     if not results:
 421         print("\n\nNo test results were found.")
 422         print("Log directory:", logdir)
 423         sys.exit(0)
 424
 425     expected = []
 426     unexpected = []
 427     all_maybes = True
 428
 429     for test in list(results.keys()):
 430         if results[test] == "PASS":
 431             continue
 432
 433         setup = test.replace(os.path.basename(test), "setup")
 434         if results[test] == "SKIP" and test != setup:
 435             if setup in known and known[setup][0] == "SKIP":
 436                 continue
 437             if setup in maybe and maybe[setup][0] == "SKIP":
 438                 continue
 439
 440         if (test in known and results[test] in known[test][0]):
 441             expected.append(test)
 442         elif test in maybe and results[test] in maybe[test][0]:
 443             if results[test] == 'SKIP' or args.maybes:
 444                 expected.append(test)
 445             elif not args.maybes:
 446                 unexpected.append(test)
 447         else:
 448             unexpected.append(test)
 449             all_maybes = False
 450
 451     print("\nTests with results other than PASS that are expected:")
 452     for test in sorted(expected):
 453         issue_url = 'https://github.com/openzfs/zfs/issues/'
 454
 455         # Include the reason why the result is expected, given the following:
 456         # 1. Suppress test results which set the "Not applicable" reason.
 457         # 2. Numerical reasons are assumed to be GitHub issue numbers.
 458         # 3. When an entire test group is skipped only report the setup reason.
 459         if test in known:
 460             if known[test][1] == na_reason:
 461                 continue
 462             elif isinstance(known[test][1], int):
 463                 expect = f"{issue_url}{known[test][1]}"
 464             else:
 465                 expect = known[test][1]
 466         elif test in maybe:
 467             if isinstance(maybe[test][1], int):
 468                 expect = f"{issue_url}{maybe[test][1]}"
 469             else:
 470                 expect = maybe[test][1]
 471         elif setup in known and known[setup][0] == "SKIP" and setup != test:
 472             continue
 473         elif setup in maybe and maybe[setup][0] == "SKIP" and setup != test:
 474             continue
 475         else:
 476             expect = "UNKNOWN REASON"
 477         print(f"    {results[test]} {test} ({expect})")
 478
 479     print("\nTests with result of PASS that are unexpected:")
 480     for test in sorted(known.keys()):
 481         # We probably should not be silently ignoring the case
 482         # where "test" is not in "results".
 483         if test not in results or results[test] != "PASS":
 484             continue
 485         print(f"    {results[test]} {test} (expected {known[test][0]})")
 486
 487     print("\nTests with results other than PASS that are unexpected:")
 488     for test in sorted(unexpected):
 489         expect = "PASS" if test not in known else known[test][0]
 490         print(f"    {results[test]} {test} (expected {expect})")
 491
 492     if len(unexpected) == 0:
 493         sys.exit(0)
 494     elif not args.maybes and all_maybes:
 495         sys.exit(2)
 496     else:
 497         sys.exit(1)