Make sure .txt files are not identified as crashed test

Previously .txt files with full backtrace may be identified as a
crashed test:

    I:Core dumps were found for the following system tests:
    I:	 core.19948-backtrace.txt
    I:   shutdown

Now .txt files are removed from the list.
77 jobs for !3909 with mnowak/fix-core-dumps-were-found-line in 62 minutes and 34 seconds (queued for 7 seconds)
detached
Status Job ID Name Coverage
  Autoconf
passed #1055405
amd64 linux
autoreconf

00:00:21

 
  Precheck
passed #1055407
amd64 linux
clang-format

00:00:19

passed #1055408
amd64 linux
coccinelle

00:03:10

passed #1055409
amd64 linux
danger

00:00:17

passed #1055406
amd64 linux
misc

00:00:15

passed #1055410
amd64 linux
tarball-create

00:01:25

 
  Build
passed #1055424
amd64 linux
clang:asan

00:02:19

passed #1055428
amd64 linux
clang:buster:amd64

00:01:17

passed #1055431
amd64 libvirt
clang:freebsd11:amd64

00:01:17

passed #1055432
amd64 libvirt
clang:freebsd12:amd64

00:01:05

passed #1055433
amd64 libvirt
clang:openbsd:amd64

00:02:11

passed #1055426
amd64 linux
clang:tsan

00:01:32

passed #1055411
amd64 linux
gcc:alpine3.12:amd64

00:01:09

passed #1055423
amd64 linux
gcc:asan

00:01:36

passed #1055415
amd64 linux
gcc:buster:amd64

00:01:15

passed #1055412
amd64 linux
gcc:centos7:amd64

00:01:04

passed #1055413
amd64 linux
gcc:centos8:amd64

00:01:10

passed #1055422
amd64 linux
gcc:focal:amd64

00:00:48

passed #1055427
amd64 linux
gcc:mutexatomics

00:01:05

passed #1055417
amd64 linux
gcc:out-of-tree

00:01:08

passed #1055416
amd64 linux
gcc:sid:amd64

00:01:29

failed #1055418
arm64 linux
gcc:sid:arm64

00:09:55

passed #1055419
i386 linux
gcc:sid:i386

00:01:09

passed #1055429
amd64 linux
gcc:softhsm2.4

00:00:46

passed #1055430
amd64 linux
gcc:softhsm2.6

00:01:09

passed #1055414
amd64 linux
gcc:stretch:amd64

00:01:22

passed #1055425
amd64 linux
gcc:tsan

00:01:20

passed #1055420
amd64 linux
gcc:tumbleweed:amd64

00:01:18

passed #1055421
amd64 linux
gcc:xenial:amd64

00:01:13

passed #1055434
amd64 windows
msvc:windows:amd64

00:00:57

 
  Unit
passed #1055447
amd64 linux
unit:clang:asan

00:01:12

passed #1055451
amd64 linux
unit:clang:buster:amd64

00:00:54

passed #1055454
amd64 libvirt
unit:clang:freebsd11:amd64

00:01:19

passed #1055455
amd64 libvirt
unit:clang:freebsd12:amd64

00:01:18

passed #1055449
amd64 linux
unit:clang:tsan

00:02:43

passed #1055435
amd64 linux
unit:gcc:alpine3.12:amd64

00:00:56

passed #1055446
amd64 linux
unit:gcc:asan

00:01:17

passed #1055439
amd64 linux
unit:gcc:buster:amd64

00:00:59

passed #1055436
amd64 linux
unit:gcc:centos7:amd64

00:01:00

passed #1055437
amd64 linux
unit:gcc:centos8:amd64

00:00:55

passed #1055445
amd64 linux
unit:gcc:focal:amd64

00:00:54

passed #1055450
amd64 linux
unit:gcc:mutexatomics

00:01:01

passed #1055440
amd64 linux
unit:gcc:sid:amd64

00:00:56

skipped #1055441
arm64 linux
unit:gcc:sid:arm64
passed #1055442
i386 linux
unit:gcc:sid:i386

00:01:05

passed #1055452
amd64 linux
unit:gcc:softhsm2.4

00:01:03

passed #1055453
amd64 linux
unit:gcc:softhsm2.6

00:00:54

passed #1055438
amd64 linux
unit:gcc:stretch:amd64

00:00:55

passed #1055448
amd64 linux
unit:gcc:tsan

00:03:37

passed #1055443
amd64 linux
unit:gcc:tumbleweed:amd64

00:00:55

passed #1055444
amd64 linux
unit:gcc:xenial:amd64

00:00:59

 
  System
failed #1055468
amd64 linux
system:clang:asan

00:12:39

passed #1055472
amd64 linux
system:clang:buster:amd64

00:11:12

passed #1055475
amd64 libvirt
system:clang:freebsd11:amd64

00:12:56

passed #1055476
amd64 libvirt
system:clang:freebsd12:amd64

00:13:11

failed #1055470
amd64 linux allowed to fail
system:clang:tsan

01:00:00

passed #1055456
amd64 linux
system:gcc:alpine3.12:amd64

00:12:18

passed #1055467
amd64 linux
system:gcc:asan

00:13:06

passed #1055460
amd64 linux
system:gcc:buster:amd64

00:11:27

passed #1055457
amd64 linux
system:gcc:centos7:amd64

00:11:31

passed #1055458
amd64 linux
system:gcc:centos8:amd64

00:11:16

passed #1055466
amd64 linux
system:gcc:focal:amd64

00:11:15

passed #1055471
amd64 linux
system:gcc:mutexatomics

00:10:49

passed #1055461
amd64 linux
system:gcc:sid:amd64

00:12:49

skipped #1055462
arm64 linux
system:gcc:sid:arm64
passed #1055463
i386 linux
system:gcc:sid:i386

00:11:10

passed #1055473
amd64 linux
system:gcc:softhsm2.4

00:11:22

passed #1055474
amd64 linux
system:gcc:softhsm2.6

00:11:30

passed #1055459
amd64 linux
system:gcc:stretch:amd64

00:11:21

failed #1055469
amd64 linux allowed to fail
system:gcc:tsan

01:00:00

passed #1055464
amd64 linux
system:gcc:tumbleweed:amd64

00:11:54

failed #1055465
amd64 linux
system:gcc:xenial:amd64

00:18:29

 
  Docs
passed #1055477
amd64 linux
docs

00:00:50

 
  Postcheck
passed #1055481
amd64 linux
cppcheck

00:00:54

passed #1055478
amd64 linux
flake8

00:00:25

passed #1055479
amd64 linux
pylint

00:00:31

passed #1055480
amd64 linux
scan-build

00:04:21

 
Name Stage Failure
failed
system:clang:tsan System The script exceeded the maximum execution time set for the job
I:catz:failed
I:catz:checking that subdomain.of.dom11.example. is not served by primary (122)
Running after_script
WARNING: Failed to inspect build container 1be91d5c8ea845869b6049862260de12de79acb37f3007d670ece67637a860e2 context deadline exceeded (docker_command.go:78:0s)
Authenticating with credentials from job payload (GitLab Registry)
Pulling docker image registry.gitlab.isc.org/isc-projects/images/bind9:debian-buster-amd64 ...
Uploading artifacts for failed job
Pulling docker image gitlab/gitlab-runner-helper:x86_64-a998cacd ...
ERROR: Job failed: execution took longer than 1h0m0s seconds
failed
system:gcc:tsan System The script exceeded the maximum execution time set for the job
I:catz:failed
I:catz:checking that subdomain.of.dom11.example. is served by secondary (127)
Running after_script
WARNING: Failed to inspect build container 820e13709dd5b91918ea012fc1fd1208615cd2a829fbf42563cba5ac1740ca5e context deadline exceeded (docker_command.go:78:0s)
Authenticating with credentials from job payload (GitLab Registry)
Pulling docker image registry.gitlab.isc.org/isc-projects/images/bind9:debian-buster-amd64 ...
Uploading artifacts for failed job
Pulling docker image gitlab/gitlab-runner-helper:x86_64-a998cacd ...
ERROR: Job failed: execution took longer than 1h0m0s seconds
failed
system:gcc:xenial:amd64 System
R:resolver:FAIL
E:resolver:2020-08-03T07:22:26+0000
FAIL resolver (exit status: 1)

Uploading artifacts for failed job
Uploading artifacts...
untracked: found 1663 files

Uploading artifacts as "archive" to coordinator... ok
id=1055465 responseStatus=201 Created token=ze5KyQqV
ERROR: Job failed: exit code 1
failed
system:clang:asan System
R:shutdown:FAIL
E:shutdown:2020-08-03T07:19:07+0000
FAIL shutdown (exit status: 1)

Uploading artifacts for failed job
Uploading artifacts...
untracked: found 1512 files

Uploading artifacts as "archive" to coordinator... ok
id=1055468 responseStatus=201 Created token=CsrhBqLX
ERROR: Job failed: exit code 1
failed
gcc:sid:arm64 Build
Running on runner-jnPFGx2o-project-1-concurrent-0 via isc-bind9-01...
Fetching changes with git depth set to 1...
Initialized empty Git repository in /builds/isc-projects/bind9/.git/
Created fresh repository.
error: RPC failed; curl 56 OpenSSL SSL_read: SSL_ERROR_SYSCALL, errno 104
fatal: the remote end hung up unexpectedly
fatal: early EOF
fatal: index-pack failed
ERROR: Job failed: exit code 1