Drop gcc:sid:i386 from GitLab CI

Building sid-i386 in Docker no longer works and we don't have a viable
alternative now, so dropping gcc:sid:i386 is our only option in this
very moment.
73 jobs for !4566 with artem/dns-over-https in 18 minutes and 2 seconds (queued for 7 seconds)
detached
Status Job ID Name Coverage
  Autoconf
passed #1458770
amd64 linux
autoreconf

00:00:16

 
  Precheck
passed #1458772
amd64 linux
clang-format

00:00:16

passed #1458773
amd64 linux
coccinelle

00:04:02

failed #1458774
amd64 linux
danger

00:00:38

passed #1458771
amd64 linux
misc

00:00:18

passed #1458775
amd64 linux
tarball-create

00:01:41

 
  Build
passed #1458787
amd64 linux
clang:asan

00:02:07

passed #1458791
amd64 linux
clang:buster:amd64

00:01:02

passed #1458794
amd64 libvirt
clang:freebsd11:amd64

00:01:13

passed #1458795
amd64 libvirt
clang:freebsd12:amd64

00:01:20

passed #1458796
amd64 libvirt
clang:openbsd:amd64

00:02:36

passed #1458789
amd64 linux
clang:tsan

00:01:18

passed #1458776
amd64 linux
gcc:alpine3.12:amd64

00:00:57

passed #1458786
amd64 linux
gcc:asan

00:01:58

passed #1458780
amd64 linux
gcc:buster:amd64

00:00:48

passed #1458777
amd64 linux
gcc:centos7:amd64

00:00:53

passed #1458778
amd64 linux
gcc:centos8:amd64

00:00:54

passed #1458785
amd64 linux
gcc:focal:amd64

00:01:04

passed #1458790
amd64 linux
gcc:mutexatomics

00:01:08

passed #1458782
amd64 linux
gcc:out-of-tree

00:01:07

passed #1458781
amd64 linux
gcc:sid:amd64

00:01:18

passed #1458792
amd64 linux
gcc:softhsm2.4

00:01:03

passed #1458793
amd64 linux
gcc:softhsm2.6

00:00:52

passed #1458779
amd64 linux
gcc:stretch:amd64

00:01:09

passed #1458788
amd64 linux
gcc:tsan

00:01:04

passed #1458783
amd64 linux
gcc:tumbleweed:amd64

00:00:53

passed #1458784
amd64 linux
gcc:xenial:amd64

00:00:57

passed #1458797
amd64 windows
msvc:windows:amd64

00:00:53

 
  Unit
passed #1458808
amd64 linux
unit:clang:asan

00:01:26

passed #1458812
amd64 linux
unit:clang:buster:amd64

00:01:15

passed #1458815
amd64 libvirt
unit:clang:freebsd11:amd64

00:01:30

passed #1458816
amd64 libvirt
unit:clang:freebsd12:amd64

00:01:26

passed #1458817
amd64 libvirt
unit:clang:openbsd:amd64

00:02:46

passed #1458810
amd64 linux
unit:clang:tsan

00:02:51

passed #1458798
amd64 linux
unit:gcc:alpine3.12:amd64

00:01:22

passed #1458807
amd64 linux
unit:gcc:asan

00:01:24

passed #1458802
amd64 linux
unit:gcc:buster:amd64

00:02:03

passed #1458799
amd64 linux
unit:gcc:centos7:amd64

00:01:15

passed #1458800
amd64 linux
unit:gcc:centos8:amd64

00:01:06

passed #1458806
amd64 linux
unit:gcc:focal:amd64

00:01:13

passed #1458811
amd64 linux
unit:gcc:mutexatomics

00:01:07

passed #1458803
amd64 linux
unit:gcc:sid:amd64

00:01:11

passed #1458813
amd64 linux
unit:gcc:softhsm2.4

00:01:16

passed #1458814
amd64 linux
unit:gcc:softhsm2.6

00:01:15

passed #1458801
amd64 linux
unit:gcc:stretch:amd64

00:01:07

passed #1458809
amd64 linux
unit:gcc:tsan

00:04:09

passed #1458804
amd64 linux
unit:gcc:tumbleweed:amd64

00:01:11

passed #1458805
amd64 linux
unit:gcc:xenial:amd64

00:01:13

 
  System
passed #1458828
amd64 linux
system:clang:asan

00:13:44

passed #1458832
amd64 linux
system:clang:buster:amd64

00:12:09

passed #1458835
amd64 libvirt
system:clang:freebsd11:amd64

00:11:58

passed #1458836
amd64 libvirt
system:clang:freebsd12:amd64

00:11:56

passed #1458830
amd64 linux
system:clang:tsan

00:15:32

passed #1458818
amd64 linux
system:gcc:alpine3.12:amd64

00:12:42

passed #1458827
amd64 linux
system:gcc:asan

00:14:26

passed #1458822
amd64 linux
system:gcc:buster:amd64

00:13:35

passed #1458819
amd64 linux
system:gcc:centos7:amd64

00:12:47

passed #1458820
amd64 linux
system:gcc:centos8:amd64

00:12:46

passed #1458826
amd64 linux
system:gcc:focal:amd64

00:12:41

passed #1458831
amd64 linux
system:gcc:mutexatomics

00:11:53

passed #1458823
amd64 linux
system:gcc:sid:amd64

00:11:35

passed #1458833
amd64 linux
system:gcc:softhsm2.4

00:11:49

passed #1458834
amd64 linux
system:gcc:softhsm2.6

00:12:59

passed #1458821
amd64 linux
system:gcc:stretch:amd64

00:11:47

passed #1458829
amd64 linux
system:gcc:tsan

00:16:09

passed #1458824
amd64 linux
system:gcc:tumbleweed:amd64

00:12:12

passed #1458825
amd64 linux
system:gcc:xenial:amd64

00:12:07

 
  Docs
passed #1458837
amd64 linux
docs

00:00:46

 
  Postcheck
passed #1458841
amd64 linux
cppcheck

00:00:53

passed #1458838
amd64 linux
flake8

00:00:24

passed #1458842
amd64 linux
gcov

00:00:33

76.0%
passed #1458839
amd64 linux
pylint

00:00:28

passed #1458840
amd64 linux
scan-build

00:04:31

 
Name Stage Failure
failed
danger Precheck
 * branch            main       -> FETCH_HEAD



Failing the build, there is 1 fail.
Feedback: https://gitlab.isc.org/isc-projects/bind9/merge_requests/4566#note_186759

Cleaning up file based variables
ERROR: Job failed: exit code 1