Explicitly specify sphinx-build cache directories

When sphinx-build is invoked without the -d command line switch, the
default path to the directory in which cached environment and doctree
files are placed is OUTPUTDIR/.doctrees.  This causes the contents of
such cache directories to needlessly be included in BIND release
directories.  Avoid that by employing the -d command line switch to make
each sphinx-build process use a cache directory outside the output
directory.  Make sure these cache directories are separate from each
other as well, to prevent multiple sphinx-build processes running in
parallel from interfering with each other.
79 jobs for !4646 with 2448-tweak-sphinx-build-invocations-v9_16 in 23 minutes and 39 seconds (queued for 12 seconds)
detached
Status Job ID Name Coverage
  Precheck
passed #1459912
amd64 linux
autoreconf

00:00:16

passed #1459914
amd64 linux
clang-format

00:00:20

passed #1459915
amd64 linux
coccinelle

00:03:23

passed #1460091
amd64 linux
danger

00:00:17

passed #1459913
amd64 linux
misc

00:00:13

passed #1459916
amd64 linux
danger

00:00:18

 
  Build
passed #1459929
amd64 linux
clang:asan

00:03:57

passed #1459933
amd64 linux
clang:buster:amd64

00:01:51

passed #1459936
amd64 libvirt
clang:freebsd11:amd64

00:02:03

passed #1459937
amd64 libvirt
clang:freebsd12:amd64

00:01:40

passed #1459938
amd64 libvirt
clang:openbsd:amd64

00:04:11

passed #1459931
amd64 linux
clang:tsan

00:02:09

passed #1459917
amd64 linux
gcc:alpine3.12:amd64

00:01:37

passed #1459928
amd64 linux
gcc:asan

00:03:09

passed #1459921
amd64 linux
gcc:buster:amd64

00:01:33

passed #1459918
amd64 linux
gcc:centos7:amd64

00:01:30

passed #1459919
amd64 linux
gcc:centos8:amd64

00:01:31

passed #1459927
amd64 linux
gcc:focal:amd64

00:01:32

passed #1459932
amd64 linux
gcc:mutexatomics

00:01:44

passed #1459923
amd64 linux
gcc:out-of-tree

00:01:28

passed #1459922
amd64 linux
gcc:sid:amd64

00:02:00

passed #1459924
i386 linux
gcc:sid:i386

00:01:42

passed #1459934
amd64 linux
gcc:softhsm2.4

00:01:41

passed #1459935
amd64 linux
gcc:softhsm2.6

00:01:32

passed #1459920
amd64 linux
gcc:stretch:amd64

00:01:50

passed #1459930
amd64 linux
gcc:tsan

00:01:54

passed #1459925
amd64 linux
gcc:tumbleweed:amd64

00:01:33

passed #1459926
amd64 linux
gcc:xenial:amd64

00:01:42

passed #1459940
amd64 windows
msvc:windows:amd64

00:00:57

passed #1459939
amd64 linux
nolibtool:sid:amd64

00:02:02

 
  Unit
passed #1459952
amd64 linux
unit:clang:asan

00:00:53

passed #1459956
amd64 linux
unit:clang:buster:amd64

00:00:36

passed #1459959
amd64 libvirt
unit:clang:freebsd11:amd64

00:01:02

failed #1459960
amd64 libvirt
unit:clang:freebsd12:amd64

00:06:00

passed #1459954
amd64 linux
unit:clang:tsan

00:01:34

passed #1459941
amd64 linux
unit:gcc:alpine3.12:amd64

00:00:51

passed #1459951
amd64 linux
unit:gcc:asan

00:00:55

passed #1459945
amd64 linux
unit:gcc:buster:amd64

00:00:57

passed #1459942
amd64 linux
unit:gcc:centos7:amd64

00:00:39

passed #1459943
amd64 linux
unit:gcc:centos8:amd64

00:00:38

passed #1459950
amd64 linux
unit:gcc:focal:amd64

00:00:39

passed #1459955
amd64 linux
unit:gcc:mutexatomics

00:00:38

passed #1459946
amd64 linux
unit:gcc:sid:amd64

00:00:35

passed #1459947
i386 linux
unit:gcc:sid:i386

00:00:47

passed #1459957
amd64 linux
unit:gcc:softhsm2.4

00:00:36

passed #1459958
amd64 linux
unit:gcc:softhsm2.6

00:00:38

passed #1459944
amd64 linux
unit:gcc:stretch:amd64

00:00:38

passed #1459953
amd64 linux
unit:gcc:tsan

00:01:54

passed #1459948
amd64 linux
unit:gcc:tumbleweed:amd64

00:00:38

passed #1459949
amd64 linux
unit:gcc:xenial:amd64

00:00:40

passed #1459961
amd64 linux
unit:nolibtool:sid:amd64

00:00:54

 
  System
passed #1459973
amd64 linux
system:clang:asan

00:13:02

failed #1459977
amd64 linux
system:clang:buster:amd64

00:11:33

passed #1459980
amd64 libvirt
system:clang:freebsd11:amd64

00:10:38

passed #1459981
amd64 libvirt
system:clang:freebsd12:amd64

00:10:33

passed #1459975
amd64 linux
system:clang:tsan

00:14:39

passed #1459962
amd64 linux
system:gcc:alpine3.12:amd64

00:12:02

passed #1459972
amd64 linux
system:gcc:asan

00:13:03

passed #1459966
amd64 linux
system:gcc:buster:amd64

00:12:20

passed #1459963
amd64 linux
system:gcc:centos7:amd64

00:11:23

passed #1459964
amd64 linux
system:gcc:centos8:amd64

00:12:02

passed #1459971
amd64 linux
system:gcc:focal:amd64

00:11:59

passed #1459976
amd64 linux
system:gcc:mutexatomics

00:11:32

passed #1459967
amd64 linux
system:gcc:sid:amd64

00:11:03

passed #1459968
i386 linux
system:gcc:sid:i386

00:10:38

passed #1459978
amd64 linux
system:gcc:softhsm2.4

00:12:37

passed #1459979
amd64 linux
system:gcc:softhsm2.6

00:11:37

passed #1459965
amd64 linux
system:gcc:stretch:amd64

00:11:34

passed #1459974
amd64 linux
system:gcc:tsan

00:14:50

passed #1459969
amd64 linux
system:gcc:tumbleweed:amd64

00:11:50

passed #1459970
amd64 linux
system:gcc:xenial:amd64

00:11:50

failed #1459982
amd64 linux
system:nolibtool:sid:amd64

00:12:26

 
  Docs
passed #1460089
amd64 linux
docs

00:02:23

failed #1459983
amd64 linux
docs

00:02:25

 
  Postcheck
passed #1459987
amd64 linux
cppcheck

00:00:22

passed #1459984
amd64 linux
flake8

00:00:19

passed #1459988
amd64 linux
gcov

00:00:37

75.0%
passed #1459985
amd64 linux
pylint

00:00:22

passed #1459986
amd64 linux
scan-build

00:10:06

 
Name Stage Failure
failed
system:nolibtool:sid:amd64 System
I:The following system tests failed:
I: serve-stale
make: *** [Makefile:491: test] Error 1
Uploading artifacts for failed job
Uploading artifacts...
untracked: found 1047 files

Uploading artifacts as "archive" to coordinator... ok
id=1459982 responseStatus=201 Created token=qzALmLkH
Cleaning up file based variables
ERROR: Job failed: exit code 1
failed
system:clang:buster:amd64 System
I:      fetchlimit
I: inline
make: *** [Makefile:491: test] Error 1
Uploading artifacts for failed job
Uploading artifacts...
untracked: found 2040 files

Uploading artifacts as "archive" to coordinator... ok
id=1459977 responseStatus=201 Created token=z1Kxw9Vi
Cleaning up file based variables
ERROR: Job failed: exit code 1
failed
unit:clang:freebsd12:amd64 Unit
Generating kyua_html/report.css
Generating kyua_html/index.html
Uploading artifacts for failed job
Uploading artifacts...
Runtime platform
arch=amd64 os=freebsd pid=1837 revision=775dd39d version=13.8.0
untracked: found 1422 files

Uploading artifacts as "archive" to coordinator... ok
id=1459960 responseStatus=201 Created token=4qvRHxjz
Cleaning up file based variables
ERROR: Job failed: exit status 1