1872665 - Intermittent Shutdown hanging at step XPCOMShutdownThreads. Something is blocking the main-thread. [@ MOZ_Crash] | single tracking bug

Status: RESOLVED INCOMPLETE

(Core :: DOM: Workers, defect, P5)

Description

[Treeherder Bug Filer]

Filed by: sstanca [at] mozilla.com
Parsed log: https://treeherder.mozilla.org/logviewer?job_id=441883047&repo=mozilla-central
Full log: https://firefox-ci-tc.services.mozilla.com/api/queue/v1/task/HAFLZ80iSDS_ak7-UZXvRg/runs/0/artifacts/public/logs/live_backing.log

---

[task 2024-01-02T11:07:07.658Z] 11:07:07     INFO - PROCESS-CRASH | Shutdown hanging at step XPCOMShutdownThreads. Something is blocking the main-thread. [@ MOZ_Crash] | dom/workers/test/test_sourcemap_header.html (finished) 
[task 2024-01-02T11:07:07.658Z] 11:07:07     INFO - Process type: main
[task 2024-01-02T11:07:07.658Z] 11:07:07     INFO - Process pid: 6148
[task 2024-01-02T11:07:07.658Z] 11:07:07     INFO - Mozilla crash reason: Shutdown hanging at step XPCOMShutdownThreads. Something is blocking the main-thread.
[task 2024-01-02T11:07:07.658Z] 11:07:07     INFO - Crash dump filename: /tmp/tmpus1rf_iu.mozrunner/minidumps/38dba784-0e05-934c-fba9-220674673977.dmp
[task 2024-01-02T11:07:07.658Z] 11:07:07     INFO - Operating system: Linux
[task 2024-01-02T11:07:07.658Z] 11:07:07     INFO -                   4.4.0-1014-aws #14taskcluster1-Ubuntu SMP Tue Apr 3 10:27:00 UTC 2018
[task 2024-01-02T11:07:07.658Z] 11:07:07     INFO - CPU: amd64
[task 2024-01-02T11:07:07.658Z] 11:07:07     INFO -      family 6 model 85 stepping 7
[task 2024-01-02T11:07:07.658Z] 11:07:07     INFO -      4 CPUs
[task 2024-01-02T11:07:07.658Z] 11:07:07     INFO - Linux Ubuntu 18.04 - bionic (Ubuntu 18.04.6 LTS)
[task 2024-01-02T11:07:07.658Z] 11:07:07     INFO - 
[task 2024-01-02T11:07:07.658Z] 11:07:07     INFO - Crash reason:  SIGSEGV / SEGV_MAPERR
[task 2024-01-02T11:07:07.658Z] 11:07:07     INFO - Crash address: 0x0000000000000000
[task 2024-01-02T11:07:07.658Z] 11:07:07     INFO - Crashing instruction: `mov dword [0x0], 0xf4`
[task 2024-01-02T11:07:07.658Z] 11:07:07     INFO - Memory accessed by instruction:
[task 2024-01-02T11:07:07.658Z] 11:07:07     INFO -   0. Address: 0x0000000000000000
[task 2024-01-02T11:07:07.659Z] 11:07:07     INFO -      Size: 4
[task 2024-01-02T11:07:07.659Z] 11:07:07     INFO - Process uptime: not available
[task 2024-01-02T11:07:07.659Z] 11:07:07     INFO - 
[task 2024-01-02T11:07:07.659Z] 11:07:07     INFO - Thread 40 Shutdow~minator (crashed)
[task 2024-01-02T11:07:07.660Z] 11:07:07     INFO -  0  libxul.so!MOZ_Crash [Assertions.h:60c369c930dc96abae06a2e0ad6833a3574b803f : 281]
[task 2024-01-02T11:07:07.660Z] 11:07:07     INFO -     Found by: inlining
[task 2024-01-02T11:07:07.660Z] 11:07:07     INFO -  1  libxul.so!mozilla::(anonymous namespace)::RunWatchdog(void*) [nsTerminator.cpp:60c369c930dc96abae06a2e0ad6833a3574b803f : 244 + 0x18]
[task 2024-01-02T11:07:07.660Z] 11:07:07     INFO -      rax = 0x00007efe69055400    rdx = 0x2e6461657268742d
[task 2024-01-02T11:07:07.660Z] 11:07:07     INFO -      rcx = 0x000055c9619e28b0    rbx = 0x0000000000000009
[task 2024-01-02T11:07:07.660Z] 11:07:07     INFO -      rsi = 0x00007efe68d15f50    rdi = 0x00007efe69055448
[task 2024-01-02T11:07:07.660Z] 11:07:07     INFO -      rbp = 0x0000000000000726    rsp = 0x00007efe745fcd70
[task 2024-01-02T11:07:07.660Z] 11:07:07     INFO -       r8 = 0x000000000000000d     r9 = 0xc39da443550a4b83
[task 2024-01-02T11:07:07.660Z] 11:07:07     INFO -      r10 = 0x0000000000000000    r11 = 0x00007efed10c1720
[task 2024-01-02T11:07:07.660Z] 11:07:07     INFO -      r12 = 0x00007efed0d5fa80    r13 = 0x0000000000000000
[task 2024-01-02T11:07:07.660Z] 11:07:07     INFO -      r14 = 0x00007efe745fcd80    r15 = 0x0000000000001804
[task 2024-01-02T11:07:07.660Z] 11:07:07     INFO -      rip = 0x00007efebb7a993e
[task 2024-01-02T11:07:07.660Z] 11:07:07     INFO -     Found by: given as instruction pointer in context
[task 2024-01-02T11:07:07.660Z] 11:07:07     INFO -  2  libnspr4.so!_pt_root [ptthread.c:60c369c930dc96abae06a2e0ad6833a3574b803f : 201 + 0x6]
[task 2024-01-02T11:07:07.660Z] 11:07:07     INFO -      rbx = 0x00007efe690de160    rbp = 0x0000000000000007
[task 2024-01-02T11:07:07.660Z] 11:07:07     INFO -      rsp = 0x00007efe745fcdb0    r12 = 0x00007efed0d5fa80
[task 2024-01-02T11:07:07.660Z] 11:07:07     INFO -      r13 = 0x0000000000000000    r14 = 0x00007efe745fd700
[task 2024-01-02T11:07:07.660Z] 11:07:07     INFO -      r15 = 0x0000000000001804    rip = 0x00007efed224cd80
[task 2024-01-02T11:07:07.660Z] 11:07:07     INFO -     Found by: call frame info
[task 2024-01-02T11:07:07.660Z] 11:07:07     INFO -  3  firefox-bin!set_alt_signal_stack_and_start(PthreadCreateParams*) [pthread_create_interposer.cpp:60c369c930dc96abae06a2e0ad6833a3574b803f : 81 + 0x5]
[task 2024-01-02T11:07:07.660Z] 11:07:07     INFO -      rbx = 0x00007efe690de160    rbp = 0x0000000000000000
[task 2024-01-02T11:07:07.660Z] 11:07:07     INFO -      rsp = 0x00007efe745fcdf0    r12 = 0x00007efed224cbc0
[task 2024-01-02T11:07:07.660Z] 11:07:07     INFO -      r13 = 0x0000000000000000    r14 = 0x00007efea4d60000
[task 2024-01-02T11:07:07.661Z] 11:07:07     INFO -      r15 = 0x00007efe745fce20    rip = 0x000055c9618df08a
[task 2024-01-02T11:07:07.661Z] 11:07:07     INFO -     Found by: call frame info
[task 2024-01-02T11:07:07.661Z] 11:07:07     INFO -  4  libpthread.so.0 + 0x76da
[task 2024-01-02T11:07:07.661Z] 11:07:07     INFO -      rbx = 0x0000000000000000    rbp = 0x0000000000000000
[task 2024-01-02T11:07:07.661Z] 11:07:07     INFO -      rsp = 0x00007efe745fcec0    r12 = 0x00007efe745fcf80
[task 2024-01-02T11:07:07.661Z] 11:07:07     INFO -      r13 = 0x0000000000000000    r14 = 0x00007efe690a5530
[task 2024-01-02T11:07:07.661Z] 11:07:07     INFO -      r15 = 0x00007fff9410f118    rip = 0x00007efed1e4d6db
[task 2024-01-02T11:07:07.662Z] 11:07:07     INFO -     Found by: call frame info
[task 2024-01-02T11:07:07.662Z] 11:07:07     INFO -  5  libc.so.6 + 0x121a3e
[task 2024-01-02T11:07:07.662Z] 11:07:07     INFO -      rsp = 0x00007efe745fcf80    rip = 0x00007efed1033a3f
[task 2024-01-02T11:07:07.662Z] 11:07:07     INFO -     Found by: stack scanning
[task 2024-01-02T11:07:07.662Z] 11:07:07     INFO - 

Comment 1

[Intermittent Failures Robot]

1 failures in 2274 pushes (0.0 failures/push) were associated with this bug in the last 7 days.

Repository breakdown:

• mozilla-central: 1

Platform and build breakdown:

• linux1804-64-ccov-qr: 1
  • opt: 1

For more details, see:
https://treeherder.mozilla.org/intermittent-failures/bugdetails?bug=1872665&startday=2024-01-01&endday=2024-01-07&tree=all

Comment 2

[Intermittent Failures Robot]

1 failures in 3599 pushes (0.0 failures/push) were associated with this bug in the last 7 days.

Repository breakdown:

• mozilla-central: 1

Platform and build breakdown:

• linux1804-64-ccov-qr: 1
  • opt: 1

For more details, see:
https://treeherder.mozilla.org/intermittent-failures/bugdetails?bug=1872665&startday=2024-01-15&endday=2024-01-21&tree=all

Comment 3

[Intermittent Failures Robot]

1 failures in 4034 pushes (0.0 failures/push) were associated with this bug in the last 7 days.

Repository breakdown:

• mozilla-central: 1

Platform and build breakdown:

• linux1804-64-ccov-qr: 1
  • opt: 1

For more details, see:
https://treeherder.mozilla.org/intermittent-failures/bugdetails?bug=1872665&startday=2024-01-22&endday=2024-01-28&tree=all

Comment 4

[Intermittent Failures Robot]

1 failures in 3952 pushes (0.0 failures/push) were associated with this bug in the last 7 days.

Repository breakdown:

• mozilla-central: 1

Platform and build breakdown:

• linux1804-64-ccov-qr: 1
  • opt: 1

For more details, see:
https://treeherder.mozilla.org/intermittent-failures/bugdetails?bug=1872665&startday=2024-01-29&endday=2024-02-04&tree=all

Comment 5

[BugBot [:suhaib / :marco/ :calixte]]

https://wiki.mozilla.org/Bug_Triage#Intermittent_Test_Failure_Cleanup
For more information, please visit BugBot documentation.

Comment 6

[Treeherder Bug Filer]

New failure instance: https://treeherder.mozilla.org/logviewer?job_id=448495836&repo=mozilla-central

Comment 7

[Intermittent Failures Robot]

1 failures in 4052 pushes (0.0 failures/push) were associated with this bug in the last 7 days.

Repository breakdown:

• mozilla-central: 1

Platform and build breakdown:

• linux1804-64-ccov-qr: 1
  • opt: 1

For more details, see:
https://treeherder.mozilla.org/intermittent-failures/bugdetails?bug=1872665&startday=2024-02-26&endday=2024-03-03&tree=all

Comment 8

[Intermittent Failures Robot]

1 failures in 4198 pushes (0.0 failures/push) were associated with this bug in the last 7 days.

Repository breakdown:

• mozilla-central: 1

Platform and build breakdown:

• linux1804-64-ccov-qr: 1
  • opt: 1

For more details, see:
https://treeherder.mozilla.org/intermittent-failures/bugdetails?bug=1872665&startday=2024-03-04&endday=2024-03-10&tree=all

Comment 9

[Intermittent Failures Robot]

1 failures in 3805 pushes (0.0 failures/push) were associated with this bug in the last 7 days.

Repository breakdown:

• mozilla-central: 1

Platform and build breakdown:

• linux1804-64-ccov-qr: 1
  • opt: 1

For more details, see:
https://treeherder.mozilla.org/intermittent-failures/bugdetails?bug=1872665&startday=2024-04-01&endday=2024-04-07&tree=all

Comment 10

[Intermittent Failures Robot]

2 failures in 3235 pushes (0.001 failures/push) were associated with this bug in the last 7 days.

Repository breakdown:

• mozilla-central: 2

Platform and build breakdown:

• linux1804-64-ccov-qr: 2
  • opt: 2

For more details, see:
https://treeherder.mozilla.org/intermittent-failures/bugdetails?bug=1872665&startday=2024-04-08&endday=2024-04-14&tree=all

Comment 11

[Intermittent Failures Robot]

1 failures in 4252 pushes (0.0 failures/push) were associated with this bug in the last 7 days.

Repository breakdown:

• mozilla-central: 1

Platform and build breakdown:

• linux1804-64-ccov-qr: 1
  • opt: 1

For more details, see:
https://treeherder.mozilla.org/intermittent-failures/bugdetails?bug=1872665&startday=2024-04-15&endday=2024-04-21&tree=all

Comment 12

[Intermittent Failures Robot]

1 failures in 4336 pushes (0.0 failures/push) were associated with this bug in the last 7 days.

Repository breakdown:

• mozilla-central: 1

Platform and build breakdown:

• linux1804-64-ccov-qr: 1
  • opt: 1

For more details, see:
https://treeherder.mozilla.org/intermittent-failures/bugdetails?bug=1872665&startday=2024-04-22&endday=2024-04-28&tree=all

Comment 13

[Intermittent Failures Robot]

1 failures in 3649 pushes (0.0 failures/push) were associated with this bug in the last 7 days.

Repository breakdown:

• mozilla-central: 1

Platform and build breakdown:

• linux1804-64-ccov-qr: 1
  • opt: 1

For more details, see:
https://treeherder.mozilla.org/intermittent-failures/bugdetails?bug=1872665&startday=2024-05-06&endday=2024-05-12&tree=all

Comment 14

[Intermittent Failures Robot]

2 failures in 4547 pushes (0.0 failures/push) were associated with this bug in the last 7 days.

Repository breakdown:

• mozilla-central: 2

Platform and build breakdown:

• linux1804-64-ccov-qr: 2
  • opt: 2

For more details, see:
https://treeherder.mozilla.org/intermittent-failures/bugdetails?bug=1872665&startday=2024-05-13&endday=2024-05-19&tree=all

Comment 15

[Intermittent Failures Robot]

2 failures in 3995 pushes (0.001 failures/push) were associated with this bug in the last 7 days.

Repository breakdown:

• mozilla-central: 2

Platform and build breakdown:

• linux1804-64-ccov-qr: 2
  • opt: 2

For more details, see:
https://treeherder.mozilla.org/intermittent-failures/bugdetails?bug=1872665&startday=2024-05-20&endday=2024-05-26&tree=all

Comment 16

[Intermittent Failures Robot]

1 failures in 4202 pushes (0.0 failures/push) were associated with this bug in the last 7 days.

Repository breakdown:

• comm-central: 1

Platform and build breakdown:

• linux1804-64-ccov-qr: 1
  • opt: 1

For more details, see:
https://treeherder.mozilla.org/intermittent-failures/bugdetails?bug=1872665&startday=2024-05-27&endday=2024-06-02&tree=all

Comment 17

[Intermittent Failures Robot]

2 failures in 4625 pushes (0.0 failures/push) were associated with this bug in the last 7 days.

Repository breakdown:

• comm-central: 1
• mozilla-central: 1

Platform and build breakdown:

• linux1804-64-ccov-qr: 2
  • opt: 2

For more details, see:
https://treeherder.mozilla.org/intermittent-failures/bugdetails?bug=1872665&startday=2024-06-10&endday=2024-06-16&tree=all

Comment 18

[Intermittent Failures Robot]

2 failures in 4116 pushes (0.0 failures/push) were associated with this bug in the last 7 days.

Repository breakdown:

• mozilla-central: 2

Platform and build breakdown:

• linux1804-64-ccov-qr: 2
  • opt: 2

For more details, see:
https://treeherder.mozilla.org/intermittent-failures/bugdetails?bug=1872665&startday=2024-06-24&endday=2024-06-30&tree=all

Comment 19

[Intermittent Failures Robot]

1 failures in 3199 pushes (0.0 failures/push) were associated with this bug in the last 7 days.

Repository breakdown:

• mozilla-central: 1

Platform and build breakdown:

• linux1804-64-ccov-qr: 1
  • opt: 1

For more details, see:
https://treeherder.mozilla.org/intermittent-failures/bugdetails?bug=1872665&startday=2024-07-01&endday=2024-07-07&tree=all

Comment 20

[Intermittent Failures Robot]

1 failures in 3780 pushes (0.0 failures/push) were associated with this bug in the last 7 days.

Repository breakdown:

• mozilla-central: 1

Platform and build breakdown:

• linux1804-64-ccov-qr: 1
  • opt: 1

For more details, see:
https://treeherder.mozilla.org/intermittent-failures/bugdetails?bug=1872665&startday=2024-07-08&endday=2024-07-14&tree=all

Comment 21

[Intermittent Failures Robot]

1 failures in 4124 pushes (0.0 failures/push) were associated with this bug in the last 7 days.

Repository breakdown:

• mozilla-central: 1

Platform and build breakdown:

• linux1804-64-ccov-qr: 1
  • opt: 1

For more details, see:
https://treeherder.mozilla.org/intermittent-failures/bugdetails?bug=1872665&startday=2024-07-22&endday=2024-07-28&tree=all

Comment 22

[Intermittent Failures Robot]

1 failures in 3839 pushes (0.0 failures/push) were associated with this bug in the last 7 days.

Repository breakdown:

• mozilla-central: 1

Platform and build breakdown:

• linux1804-64-ccov-qr: 1
  • opt: 1

For more details, see:
https://treeherder.mozilla.org/intermittent-failures/bugdetails?bug=1872665&startday=2024-07-29&endday=2024-08-04&tree=all

Comment 23

[Intermittent Failures Robot]

2 failures in 3459 pushes (0.001 failures/push) were associated with this bug in the last 7 days.

Repository breakdown:

• mozilla-central: 2

Platform and build breakdown:

• linux1804-64-ccov-qr: 2
  • opt: 2

For more details, see:
https://treeherder.mozilla.org/intermittent-failures/bugdetails?bug=1872665&startday=2024-08-05&endday=2024-08-11&tree=all

Comment 24

[Intermittent Failures Robot]

1 failures in 3218 pushes (0.0 failures/push) were associated with this bug in the last 7 days.

Repository breakdown:

• mozilla-central: 1

Platform and build breakdown:

• linux1804-64-ccov-qr: 1
  • opt: 1

For more details, see:
https://treeherder.mozilla.org/intermittent-failures/bugdetails?bug=1872665&startday=2024-08-19&endday=2024-08-25&tree=all

Comment 25

[Intermittent Failures Robot]

1 failures in 3879 pushes (0.0 failures/push) were associated with this bug in the last 7 days.

Repository breakdown:

• mozilla-central: 1

Platform and build breakdown:

• linux1804-64-ccov-qr: 1
  • opt: 1

For more details, see:
https://treeherder.mozilla.org/intermittent-failures/bugdetails?bug=1872665&startday=2024-08-26&endday=2024-09-01&tree=all

Comment 26

[Intermittent Failures Robot]

1 failures in 4448 pushes (0.0 failures/push) were associated with this bug in the last 7 days.

Repository breakdown:

• mozilla-central: 1

Platform and build breakdown:

• linux1804-64-ccov-qr: 1
  • opt: 1

For more details, see:
https://treeherder.mozilla.org/intermittent-failures/bugdetails?bug=1872665&startday=2024-09-09&endday=2024-09-15&tree=all

Comment 27

[Intermittent Failures Robot]

1 failures in 3574 pushes (0.0 failures/push) were associated with this bug in the last 7 days.

Repository breakdown:

• mozilla-central: 1

Platform and build breakdown:

• linux1804-64-ccov-qr: 1
  • opt: 1

For more details, see:
https://treeherder.mozilla.org/intermittent-failures/bugdetails?bug=1872665&startday=2024-09-30&endday=2024-10-06&tree=all

Comment 28

[Intermittent Failures Robot]

1 failures in 4679 pushes (0.0 failures/push) were associated with this bug in the last 7 days.

Repository breakdown:

• try: 1

Platform and build breakdown:

• linux1804-64-ccov-qr: 1
  • opt: 1

For more details, see:
https://treeherder.mozilla.org/intermittent-failures/bugdetails?bug=1872665&startday=2024-10-07&endday=2024-10-13&tree=all

Comment 29

[Intermittent Failures Robot]

1 failures in 4579 pushes (0.0 failures/push) were associated with this bug in the last 7 days.

Repository breakdown:

• mozilla-central: 1

Platform and build breakdown:

• linux1804-64-ccov-qr: 1
  • opt: 1

For more details, see:
https://treeherder.mozilla.org/intermittent-failures/bugdetails?bug=1872665&startday=2024-10-14&endday=2024-10-20&tree=all

Comment 30

[BugBot [:suhaib / :marco/ :calixte]]

https://wiki.mozilla.org/Bug_Triage#Intermittent_Test_Failure_Cleanup
For more information, please visit BugBot documentation.

Comment 31

[Treeherder Bug Filer]

New failure instance: https://treeherder.mozilla.org/logviewer?job_id=485107271&repo=mozilla-central

Comment 32

[Intermittent Failures Robot]

1 failures in 4722 pushes (0.0 failures/push) were associated with this bug in the last 7 days.

Repository breakdown:

• mozilla-central: 1

Platform and build breakdown:

• linux1804-64-ccov-qr: 1
  • opt: 1

For more details, see:
https://treeherder.mozilla.org/intermittent-failures/bugdetails?bug=1872665&startday=2024-12-02&endday=2024-12-08&tree=all

Comment 33

[Intermittent Failures Robot]

Summary

1 failures in 4615 pushes (0.0 failures/push) were associated with this bug in the last 7 days.

Repository breakdown:

• mozilla-central: 1

Platform and build breakdown:

• linux1804-64-ccov-qr: 1
  • opt: 1

Table

	1proc	1proc-s	a11y-checks	a11y-checks-s	a11y-checks-swr	a11y-checks-swr-s	condprof	condprof-s	fis	fis-hv	fis-hv-s	fis-s	headless	headless-s	http2	http3	msix	msix-s	no_variant	nofis	nofis-aab	nofis-s	nofis-ship	nofis-ship-s	nofis-spi	nofis-swr	nofis-swr-s	nogpu	nogpu-s	s	spi	spi-nw	spi-nw-1proc	spi-nw-nofis	spi-nw-nofis-s	spi-nw-s	spi-s	swr	swr-s	wr-dc1-p	xorig	xorig-s
linux1804-64-ccov-qr/opt	1

For more details, see:

https://treeherder.mozilla.org/intermittent-failures/bugdetails?bug=1872665&startday=2024-12-09&endday=2024-12-15&tree=all

Comment 34

[BugBot [:suhaib / :marco/ :calixte]]

https://wiki.mozilla.org/Bug_Triage#Intermittent_Test_Failure_Cleanup
For more information, please visit BugBot documentation.

Comment 35

[Treeherder Bug Filer]

New failure instance: https://treeherder.mozilla.org/logviewer?job_id=489441314&repo=mozilla-central

Comment 36

[Intermittent Failures Robot]

Summary

1 failures in 3682 pushes (0.0 failures/push) were associated with this bug in the last 7 days.

Repository breakdown:

• mozilla-central: 1

Platform and build breakdown:

• linux1804-64-ccov-qr: 1
  • opt: 1

Table

	1proc
linux1804-64-ccov-qr/opt	1

For more details, see:

https://treeherder.mozilla.org/intermittent-failures/bugdetails?bug=1872665&startday=2025-01-06&endday=2025-01-12&tree=all

Comment 37

[Intermittent Failures Robot]

Summary

1 failures in 4508 pushes (0.0 failures/push) were associated with this bug in the last 7 days.

Repository breakdown:

• mozilla-central: 1

Platform and build breakdown:

• linux1804-64-ccov-qr: 1
  • opt: 1

Table

	1proc
linux1804-64-ccov-qr/-/opt	1

For more details, see:

https://treeherder.mozilla.org/intermittent-failures/bugdetails?bug=1872665&startday=2025-01-13&endday=2025-01-19&tree=all

Comment 38

[Intermittent Failures Robot]

Summary

1 failures in 4309 pushes (0.0 failures/push) were associated with this bug in the last 7 days.

Repository breakdown:

• mozilla-central: 1

Platform and build breakdown:

• linux1804-64-ccov-qr: 1
  • opt: 1

Table

	1proc
linux1804-64-ccov-qr--/opt	1

For more details, see:

https://treeherder.mozilla.org/intermittent-failures/bugdetails?bug=1872665&startday=2025-02-03&endday=2025-02-09&tree=all

Comment 39

[BugBot [:suhaib / :marco/ :calixte]]

https://wiki.mozilla.org/Bug_Triage#Intermittent_Test_Failure_Cleanup
For more information, please visit BugBot documentation.