Document return codes of dig

The dig tool reports some states as exit status. Document them briefly
in the manual page.
73 jobs for !2688 with feature/master/dig-return-codes in 5 minutes and 28 seconds (queued for 9 seconds)
latest detached
Status Job ID Name Coverage
  Autoconf
passed autoreconf #1920992
amd64 linux

00:00:16

 
  Precheck
passed clang-format #1920994
amd64 linux

00:00:16

canceled coccinelle #1920995
amd64 linux

00:00:32

passed danger #1920996
amd64 linux

00:00:16

passed misc #1920993
amd64 linux

00:00:15

passed tarball-create #1920997
amd64 linux

00:01:32

 
  Build
passed clang:asan #1921011
amd64 linux

00:01:59

passed clang:buster:amd64 #1921014
amd64 linux

00:01:04

passed clang:freebsd12:amd64 #1921017
amd64 libvirt

00:01:20

passed clang:freebsd13:amd64 #1921018
amd64 libvirt

00:03:37

passed clang:openbsd:amd64 #1921019
amd64 libvirt

00:02:21

passed clang:tsan #1921013
amd64 linux

00:01:02

passed gcc:alpine3.14:amd64 #1920998
amd64 linux

00:00:55

passed gcc:asan #1921010
amd64 linux

00:01:39

passed gcc:bionic:amd64 #1921008
amd64 linux

00:01:05

passed gcc:buster:amd64 #1921002
amd64 linux

00:00:45

passed gcc:buster:amd64cross32 #1921003
amd64 linux

00:01:08

passed gcc:centos7:amd64 #1920999
amd64 linux

00:00:49

passed gcc:centos8:amd64 #1921000
amd64 linux

00:01:00

passed gcc:focal:amd64 #1921009
amd64 linux

00:00:47

passed gcc:out-of-tree #1921005
amd64 linux

00:01:03

passed gcc:sid:amd64 #1921004
amd64 linux

00:01:06

passed gcc:softhsm2.4 #1921015
amd64 linux

00:00:53

passed gcc:softhsm2.6 #1921016
amd64 linux

00:00:58

passed gcc:stretch:amd64 #1921001
amd64 linux

00:00:59

passed gcc:tarball #1921006
amd64 linux

00:01:01

passed gcc:tsan #1921012
linux amd64

00:00:55

passed gcc:tumbleweed:amd64 #1921007
amd64 linux

00:00:58

 
  Unit
passed unit:clang:asan #1921031
amd64 linux

00:01:43

passed unit:clang:buster:amd64 #1921034
amd64 linux

00:01:12

passed unit:clang:freebsd12:amd64 #1921037
amd64 libvirt

00:01:39

canceled unit:clang:freebsd13:amd64 #1921038
amd64 libvirt

00:00:40

canceled unit:clang:openbsd:amd64 #1921039
amd64 libvirt

00:01:50

canceled unit:clang:tsan #1921033
amd64 linux

00:02:42

passed unit:gcc:alpine3.14:amd64 #1921020
amd64 linux

00:01:19

passed unit:gcc:asan #1921030
amd64 linux

00:01:46

passed unit:gcc:bionic:amd64 #1921028
amd64 linux

00:01:33

passed unit:gcc:buster:amd64 #1921024
amd64 linux

00:02:23

passed unit:gcc:buster:amd64cross32 #1921025
amd64 linux

00:01:34

passed unit:gcc:centos7:amd64 #1921021
amd64 linux

00:01:22

passed unit:gcc:centos8:amd64 #1921022
amd64 linux

00:01:22

passed unit:gcc:focal:amd64 #1921029
amd64 linux

00:01:15

passed unit:gcc:sid:amd64 #1921026
amd64 linux

00:01:23

passed unit:gcc:softhsm2.4 #1921035
amd64 linux

00:01:17

passed unit:gcc:softhsm2.6 #1921036
amd64 linux

00:01:14

passed unit:gcc:stretch:amd64 #1921023
amd64 linux

00:00:16

canceled unit:gcc:tsan #1921032
amd64 linux

00:03:46

passed unit:gcc:tumbleweed:amd64 #1921027
amd64 linux

00:01:18

 
  System
canceled system:clang:asan #1921051
amd64 linux

00:01:51

canceled system:clang:buster:amd64 #1921054
amd64 linux

00:01:21

canceled system:clang:freebsd12:amd64 #1921057
amd64 libvirt

00:02:47

canceled system:clang:freebsd13:amd64 #1921058
amd64 libvirt

00:00:31

canceled system:clang:tsan #1921053
amd64 linux

00:01:38

canceled system:gcc:alpine3.14:amd64 #1921040
amd64 linux

00:02:30

canceled system:gcc:asan #1921050
amd64 linux

00:01:53

canceled system:gcc:bionic:amd64 #1921048
amd64 linux

00:01:54

canceled system:gcc:buster:amd64 #1921044
amd64 linux

00:01:35

canceled system:gcc:buster:amd64cross32 #1921045
amd64 linux

00:02:17

canceled system:gcc:centos7:amd64 #1921041
amd64 linux

00:02:29

canceled system:gcc:centos8:amd64 #1921042
amd64 linux

00:02:24

canceled system:gcc:focal:amd64 #1921049
amd64 linux

00:01:54

canceled system:gcc:sid:amd64 #1921046
amd64 linux

00:01:58

canceled system:gcc:softhsm2.4 #1921055
amd64 linux

00:01:20

canceled system:gcc:softhsm2.6 #1921056
amd64 linux

00:01:18

canceled system:gcc:stretch:amd64 #1921043
amd64 linux

00:02:17

canceled system:gcc:tsan #1921052
amd64 linux

00:01:48

canceled system:gcc:tumbleweed:amd64 #1921047
amd64 linux

00:01:55

 
  Docs
passed docs #1921059
amd64 linux

00:00:49

 
  Postcheck
passed cppcheck #1921063
amd64 linux

00:00:24

passed flake8 #1921060
amd64 linux

00:00:19

canceled gcov #1921064
amd64 linux

passed pylint #1921061
amd64 linux

00:00:22

canceled scan-build #1921062
linux amd64

00:00:42