Diff of the two buildlogs:

--
--- b1/build.log	2024-04-11 19:31:25.731250307 +0000
+++ b2/build.log	2024-04-11 19:32:30.264498831 +0000
@@ -1,6 +1,6 @@
 I: pbuilder: network access will be disabled during build
-I: Current time: Wed May 14 13:53:40 -12 2025
-I: pbuilder-time-stamp: 1747274020
+I: Current time: Fri Apr 12 09:31:29 +14 2024
+I: pbuilder-time-stamp: 1712863889
 I: Building the build Environment
 I: extracting base tarball [/var/cache/pbuilder/trixie-reproducible-base.tgz]
 I: copying local configuration
@@ -26,54 +26,86 @@
 dpkg-source: info: unpacking golang-github-disintegration-imaging_1.6.2-2.debian.tar.xz
 I: Not using root during the build.
 I: Installing the build-deps
-I: user script /srv/workspace/pbuilder/43827/tmp/hooks/D02_print_environment starting
+I: user script /srv/workspace/pbuilder/23169/tmp/hooks/D01_modify_environment starting
+debug: Running on ionos2-i386.
+I: Changing host+domainname to test build reproducibility
+I: Adding a custom variable just for the fun of it...
+I: Changing /bin/sh to bash
+'/bin/sh' -> '/bin/bash'
+lrwxrwxrwx 1 root root 9 Apr 11 19:31 /bin/sh -> /bin/bash
+I: Setting pbuilder2's login shell to /bin/bash
+I: Setting pbuilder2's GECOS to second user,second room,second work-phone,second home-phone,second other
+I: user script /srv/workspace/pbuilder/23169/tmp/hooks/D01_modify_environment finished
+I: user script /srv/workspace/pbuilder/23169/tmp/hooks/D02_print_environment starting
 I: set
-  BUILDDIR='/build/reproducible-path'
-  BUILDUSERGECOS='first user,first room,first work-phone,first home-phone,first other'
-  BUILDUSERNAME='pbuilder1'
-  BUILD_ARCH='i386'
-  DEBIAN_FRONTEND='noninteractive'
-  DEB_BUILD_OPTIONS='buildinfo=+all reproducible=+all parallel=22 '
-  DISTRIBUTION='trixie'
-  HOME='/root'
-  HOST_ARCH='i386'
+  BASH=/bin/sh
+  BASHOPTS=checkwinsize:cmdhist:complete_fullquote:extquote:force_fignore:globasciiranges:globskipdots:hostcomplete:interactive_comments:patsub_replacement:progcomp:promptvars:sourcepath
+  BASH_ALIASES=()
+  BASH_ARGC=()
+  BASH_ARGV=()
+  BASH_CMDS=()
+  BASH_LINENO=([0]="12" [1]="0")
+  BASH_LOADABLES_PATH=/usr/local/lib/bash:/usr/lib/bash:/opt/local/lib/bash:/usr/pkg/lib/bash:/opt/pkg/lib/bash:.
+  BASH_SOURCE=([0]="/tmp/hooks/D02_print_environment" [1]="/tmp/hooks/D02_print_environment")
+  BASH_VERSINFO=([0]="5" [1]="2" [2]="21" [3]="1" [4]="release" [5]="i686-pc-linux-gnu")
+  BASH_VERSION='5.2.21(1)-release'
+  BUILDDIR=/build/reproducible-path
+  BUILDUSERGECOS='second user,second room,second work-phone,second home-phone,second other'
+  BUILDUSERNAME=pbuilder2
+  BUILD_ARCH=i386
+  DEBIAN_FRONTEND=noninteractive
+  DEB_BUILD_OPTIONS='buildinfo=+all reproducible=+all parallel=7 '
+  DIRSTACK=()
+  DISTRIBUTION=trixie
+  EUID=0
+  FUNCNAME=([0]="Echo" [1]="main")
+  GROUPS=()
+  HOME=/root
+  HOSTNAME=i-capture-the-hostname
+  HOSTTYPE=i686
+  HOST_ARCH=i386
   IFS=' 	
   '
-  INVOCATION_ID='6e1c0be2b2be4c55b5c636f5d411922c'
-  LANG='C'
-  LANGUAGE='en_US:en'
-  LC_ALL='C'
-  LD_LIBRARY_PATH='/usr/lib/libeatmydata'
-  LD_PRELOAD='libeatmydata.so'
-  MAIL='/var/mail/root'
-  OPTIND='1'
-  PATH='/usr/sbin:/usr/bin:/sbin:/bin:/usr/games'
-  PBCURRENTCOMMANDLINEOPERATION='build'
-  PBUILDER_OPERATION='build'
-  PBUILDER_PKGDATADIR='/usr/share/pbuilder'
-  PBUILDER_PKGLIBDIR='/usr/lib/pbuilder'
-  PBUILDER_SYSCONFDIR='/etc'
-  PPID='43827'
-  PS1='# '
-  PS2='> '
+  INVOCATION_ID=8ffaa89781454b8890a84ce883d40ffe
+  LANG=C
+  LANGUAGE=de_CH:de
+  LC_ALL=C
+  LD_LIBRARY_PATH=/usr/lib/libeatmydata
+  LD_PRELOAD=libeatmydata.so
+  MACHTYPE=i686-pc-linux-gnu
+  MAIL=/var/mail/root
+  OPTERR=1
+  OPTIND=1
+  OSTYPE=linux-gnu
+  PATH=/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/i/capture/the/path
+  PBCURRENTCOMMANDLINEOPERATION=build
+  PBUILDER_OPERATION=build
+  PBUILDER_PKGDATADIR=/usr/share/pbuilder
+  PBUILDER_PKGLIBDIR=/usr/lib/pbuilder
+  PBUILDER_SYSCONFDIR=/etc
+  PIPESTATUS=([0]="0")
+  POSIXLY_CORRECT=y
+  PPID=23169
   PS4='+ '
-  PWD='/'
-  SHELL='/bin/bash'
-  SHLVL='2'
-  SUDO_COMMAND='/usr/bin/timeout -k 18.1h 18h /usr/bin/ionice -c 3 /usr/bin/nice /usr/sbin/pbuilder --build --configfile /srv/reproducible-results/rbuild-debian/r-b-build.APebtwxU/pbuilderrc_9Fie --distribution trixie --hookdir /etc/pbuilder/first-build-hooks --debbuildopts -b --basetgz /var/cache/pbuilder/trixie-reproducible-base.tgz --buildresult /srv/reproducible-results/rbuild-debian/r-b-build.APebtwxU/b1 --logfile b1/build.log golang-github-disintegration-imaging_1.6.2-2.dsc'
-  SUDO_GID='112'
-  SUDO_UID='107'
-  SUDO_USER='jenkins'
-  TERM='unknown'
-  TZ='/usr/share/zoneinfo/Etc/GMT+12'
-  USER='root'
-  _='/usr/bin/systemd-run'
-  http_proxy='http://85.184.249.68:3128'
+  PWD=/
+  SHELL=/bin/bash
+  SHELLOPTS=braceexpand:errexit:hashall:interactive-comments:posix
+  SHLVL=3
+  SUDO_COMMAND='/usr/bin/timeout -k 24.1h 24h /usr/bin/ionice -c 3 /usr/bin/nice -n 11 /usr/bin/unshare --uts -- /usr/sbin/pbuilder --build --configfile /srv/reproducible-results/rbuild-debian/r-b-build.APebtwxU/pbuilderrc_g033 --distribution trixie --hookdir /etc/pbuilder/rebuild-hooks --debbuildopts -b --basetgz /var/cache/pbuilder/trixie-reproducible-base.tgz --buildresult /srv/reproducible-results/rbuild-debian/r-b-build.APebtwxU/b2 --logfile b2/build.log golang-github-disintegration-imaging_1.6.2-2.dsc'
+  SUDO_GID=112
+  SUDO_UID=107
+  SUDO_USER=jenkins
+  TERM=unknown
+  TZ=/usr/share/zoneinfo/Etc/GMT-14
+  UID=0
+  USER=root
+  _='I: set'
+  http_proxy=http://78.137.99.97:3128
 I: uname -a
-  Linux ionos6-i386 6.1.0-18-amd64 #1 SMP PREEMPT_DYNAMIC Debian 6.1.76-1 (2024-02-01) x86_64 GNU/Linux
+  Linux i-capture-the-hostname 6.1.0-18-amd64 #1 SMP PREEMPT_DYNAMIC Debian 6.1.76-1 (2024-02-01) x86_64 GNU/Linux
 I: ls -l /bin
-  lrwxrwxrwx 1 root root 7 May 14 17:47 /bin -> usr/bin
-I: user script /srv/workspace/pbuilder/43827/tmp/hooks/D02_print_environment finished
+  lrwxrwxrwx 1 root root 7 Apr 10 11:24 /bin -> usr/bin
+I: user script /srv/workspace/pbuilder/23169/tmp/hooks/D02_print_environment finished
  -> Attempting to satisfy build-dependencies
  -> Creating pbuilder-satisfydepends-dummy package
 Package: pbuilder-satisfydepends-dummy
@@ -153,7 +185,7 @@
 Get: 36 http://deb.debian.org/debian trixie/main i386 golang-any i386 2:1.22~3 [5104 B]
 Get: 37 http://deb.debian.org/debian trixie/main i386 golang-golang-x-text-dev all 0.14.0-2 [4001 kB]
 Get: 38 http://deb.debian.org/debian trixie/main i386 golang-golang-x-image-dev all 0.15.0-1 [3006 kB]
-Fetched 68.0 MB in 1s (93.8 MB/s)
+Fetched 68.0 MB in 1s (66.0 MB/s)
 debconf: delaying package configuration, since apt-utils is not installed
 Selecting previously unselected package sensible-utils.
 (Reading database ... 
(Reading database ... 5%
(Reading database ... 10%
(Reading database ... 15%
(Reading database ... 20%
(Reading database ... 25%
(Reading database ... 30%
(Reading database ... 35%
(Reading database ... 40%
(Reading database ... 45%
(Reading database ... 50%
(Reading database ... 55%
(Reading database ... 60%
(Reading database ... 65%
(Reading database ... 70%
(Reading database ... 75%
(Reading database ... 80%
(Reading database ... 85%
(Reading database ... 90%
(Reading database ... 95%
(Reading database ... 100%
(Reading database ... 19874 files and directories currently installed.)
@@ -320,7 +352,11 @@
 Building tag database...
  -> Finished parsing the build-deps
 I: Building the package
-I: Running cd /build/reproducible-path/golang-github-disintegration-imaging-1.6.2/ && env PATH="/usr/sbin:/usr/bin:/sbin:/bin:/usr/games" HOME="/nonexistent/first-build" dpkg-buildpackage -us -uc -b && env PATH="/usr/sbin:/usr/bin:/sbin:/bin:/usr/games" HOME="/nonexistent/first-build" dpkg-genchanges -S  > ../golang-github-disintegration-imaging_1.6.2-2_source.changes
+I: user script /srv/workspace/pbuilder/23169/tmp/hooks/A99_set_merged_usr starting
+Not re-configuring usrmerge for trixie
+I: user script /srv/workspace/pbuilder/23169/tmp/hooks/A99_set_merged_usr finished
+hostname: Name or service not known
+I: Running cd /build/reproducible-path/golang-github-disintegration-imaging-1.6.2/ && env PATH="/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/i/capture/the/path" HOME="/nonexistent/second-build" dpkg-buildpackage -us -uc -b && env PATH="/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/i/capture/the/path" HOME="/nonexistent/second-build" dpkg-genchanges -S  > ../golang-github-disintegration-imaging_1.6.2-2_source.changes
 dpkg-buildpackage: info: source package golang-github-disintegration-imaging
 dpkg-buildpackage: info: source version 1.6.2-2
 dpkg-buildpackage: info: source distribution unstable
@@ -338,32 +374,32 @@
    dh_autoreconf -O--buildsystem=golang
    dh_auto_configure -O--buildsystem=golang
    dh_auto_build -O--buildsystem=golang
-	cd obj-i686-linux-gnu && go install -trimpath -v -p 22 github.com/disintegration/imaging
+	cd obj-i686-linux-gnu && go install -trimpath -v -p 7 github.com/disintegration/imaging
 internal/coverage/rtcov
-internal/godebugs
-internal/goarch
 internal/goos
-cmp
-internal/goexperiment
 internal/unsafeheader
-internal/itoa
+internal/goarch
+internal/godebugs
+internal/goexperiment
 internal/cpu
-runtime/internal/atomic
-runtime/internal/syscall
 internal/race
-unicode/utf8
-image/color
-math/bits
-sync/atomic
-unicode
-runtime/internal/math
-internal/chacha8rand
+runtime/internal/syscall
 internal/abi
+runtime/internal/atomic
+internal/chacha8rand
+runtime/internal/math
 runtime/internal/sys
-slices
+sync/atomic
+unicode
+unicode/utf8
+internal/bytealg
+math/bits
+internal/itoa
+image/color
+cmp
 math
+slices
 image/color/palette
-internal/bytealg
 runtime
 internal/reflectlite
 sync
@@ -371,32 +407,32 @@
 errors
 sort
 internal/oserror
+io
 internal/safefilepath
 path
-io
 strconv
 syscall
-hash
 bytes
 strings
+hash
 hash/adler32
 hash/crc32
 reflect
 bufio
 image
+internal/syscall/unix
+internal/syscall/execenv
+time
 image/internal/imageutil
 image/draw
 image/jpeg
-internal/syscall/execenv
-internal/syscall/unix
-time
-internal/fmtsort
-encoding/binary
 io/fs
 internal/poll
+internal/fmtsort
+encoding/binary
+os
 golang.org/x/image/bmp
 golang.org/x/image/ccitt
-os
 io/ioutil
 path/filepath
 fmt
@@ -405,11 +441,11 @@
 compress/flate
 image/gif
 compress/zlib
-image/png
 golang.org/x/image/tiff
+image/png
 github.com/disintegration/imaging
    dh_auto_test -O--buildsystem=golang
-	cd obj-i686-linux-gnu && go test -vet=off -v -p 22 github.com/disintegration/imaging
+	cd obj-i686-linux-gnu && go test -vet=off -v -p 7 github.com/disintegration/imaging
 === RUN   TestGrayscale
 === RUN   TestGrayscale/Grayscale_3x3
 --- PASS: TestGrayscale (0.00s)
@@ -431,7 +467,7 @@
     --- PASS: TestAdjustSaturation/AdjustSaturation_3x3_-100 (0.00s)
     --- PASS: TestAdjustSaturation/AdjustSaturation_3x3_0 (0.00s)
 === RUN   TestAdjustSaturationGolden
---- PASS: TestAdjustSaturationGolden (0.03s)
+--- PASS: TestAdjustSaturationGolden (0.06s)
 === RUN   TestAdjustContrast
 === RUN   TestAdjustContrast/AdjustContrast_3x3_10
 === RUN   TestAdjustContrast/AdjustContrast_3x3_100
@@ -521,7 +557,7 @@
     --- PASS: TestBlur/Blur_3x3_0.5 (0.00s)
     --- PASS: TestBlur/Blur_3x3_10 (0.00s)
 === RUN   TestBlurGolden
---- PASS: TestBlurGolden (0.07s)
+--- PASS: TestBlurGolden (0.14s)
 === RUN   TestSharpen
 === RUN   TestSharpen/Sharpen_3x3_0
 === RUN   TestSharpen/Sharpen_3x3_0.5
@@ -533,7 +569,7 @@
     --- PASS: TestSharpen/Sharpen_3x3_100 (0.00s)
     --- PASS: TestSharpen/Sharpen_3x1_10 (0.00s)
 === RUN   TestSharpenGolden
---- PASS: TestSharpenGolden (0.07s)
+--- PASS: TestSharpenGolden (0.16s)
 === RUN   TestHistogram
 === RUN   TestHistogram/grayscale
 === RUN   TestHistogram/colorful
@@ -611,7 +647,7 @@
     --- PASS: TestReadOrientationFails/missing_orientation_value (0.00s)
     --- PASS: TestReadOrientationFails/invalid_orientation_value (0.00s)
 === RUN   TestAutoOrientation
---- PASS: TestAutoOrientation (0.00s)
+--- PASS: TestAutoOrientation (0.01s)
 === RUN   TestResize
 === RUN   TestResize/Resize_2x2_1x1_box
 === RUN   TestResize/Resize_2x2_1x2_box
@@ -667,7 +703,7 @@
     --- PASS: TestResampleFilters/#13 (0.00s)
     --- PASS: TestResampleFilters/#14 (0.00s)
 === RUN   TestResizeGolden
---- PASS: TestResizeGolden (0.25s)
+--- PASS: TestResizeGolden (0.50s)
 === RUN   TestFit
 === RUN   TestFit/Fit_2x2_1x10_box
 === RUN   TestFit/Fit_2x2_10x1_box
@@ -683,7 +719,7 @@
     --- PASS: TestFit/Fit_2x2_0x0_box (0.00s)
     --- PASS: TestFit/Fit_2x2_-1x0_box (0.00s)
 === RUN   TestFitGolden
---- PASS: TestFitGolden (0.03s)
+--- PASS: TestFitGolden (0.05s)
 === RUN   TestFill
 === RUN   TestFill/Fill_4x4_4x4_TopRight_Box
 === RUN   TestFill/Fill_4x4_0x4_Left_Box
@@ -697,7 +733,7 @@
     --- PASS: TestFill/Fill_100x200_20x10_Center_Linear (0.00s)
     --- PASS: TestFill/Fill_10x20_20x10_Center_Linear (0.00s)
 === RUN   TestFillGolden
---- PASS: TestFillGolden (0.06s)
+--- PASS: TestFillGolden (0.13s)
 === RUN   TestResizeAndCrop
 === RUN   TestResizeAndCrop/resizeAndCrop_4x4_2x2_Center_Nearest
 === RUN   TestResizeAndCrop/resizeAndCrop_4x4_1x4_TopLeft_Nearest
@@ -747,7 +783,7 @@
 === RUN   TestScanner/Alpha
 === RUN   TestScanner/Alpha16
 === RUN   TestScanner/Generic
---- PASS: TestScanner (0.00s)
+--- PASS: TestScanner (0.01s)
     --- PASS: TestScanner/NRGBA (0.00s)
     --- PASS: TestScanner/NRGBA64 (0.00s)
     --- PASS: TestScanner/RGBA (0.00s)
@@ -771,13 +807,13 @@
 === RUN   TestNew/New_3x3_with_alpha
 === RUN   TestNew/New_0x0_white
 === RUN   TestNew/New_800x600_custom
---- PASS: TestNew (0.01s)
+--- PASS: TestNew (0.02s)
     --- PASS: TestNew/New_1x1_transparent (0.00s)
     --- PASS: TestNew/New_1x2_red (0.00s)
     --- PASS: TestNew/New_2x1_white (0.00s)
     --- PASS: TestNew/New_3x3_with_alpha (0.00s)
     --- PASS: TestNew/New_0x0_white (0.00s)
-    --- PASS: TestNew/New_800x600_custom (0.00s)
+    --- PASS: TestNew/New_800x600_custom (0.01s)
 === RUN   TestClone
 === RUN   TestClone/Clone_NRGBA
 === RUN   TestClone/Clone_NRGBA64
@@ -931,7 +967,7 @@
     --- PASS: TestRotate/Rotate_360*10_+_180 (0.00s)
     --- PASS: TestRotate/Rotate_360*10_+_270 (0.00s)
 === RUN   TestParallel
---- PASS: TestParallel (0.00s)
+--- PASS: TestParallel (0.01s)
 === RUN   TestClamp
 --- PASS: TestClamp (0.00s)
 === RUN   TestReverse
@@ -1013,7 +1049,7 @@
     --- PASS: TestHSLToRGB/#14 (0.00s)
     --- PASS: TestHSLToRGB/#15 (0.00s)
 PASS
-ok  	github.com/disintegration/imaging	0.631s
+ok  	github.com/disintegration/imaging	1.246s
    create-stamp debian/debhelper-build-stamp
    dh_testroot -O--buildsystem=golang
    dh_prep -O--buildsystem=golang
@@ -1041,12 +1077,14 @@
 dpkg-buildpackage: info: binary-only upload (no source included)
 dpkg-genchanges: info: not including original source code in upload
 I: copying local configuration
+I: user script /srv/workspace/pbuilder/23169/tmp/hooks/B01_cleanup starting
+I: user script /srv/workspace/pbuilder/23169/tmp/hooks/B01_cleanup finished
 I: unmounting dev/ptmx filesystem
 I: unmounting dev/pts filesystem
 I: unmounting dev/shm filesystem
 I: unmounting proc filesystem
 I: unmounting sys filesystem
 I: cleaning the build env 
-I: removing directory /srv/workspace/pbuilder/43827 and its subdirectories
-I: Current time: Wed May 14 13:54:20 -12 2025
-I: pbuilder-time-stamp: 1747274060
+I: removing directory /srv/workspace/pbuilder/23169 and its subdirectories
+I: Current time: Fri Apr 12 09:32:29 +14 2024
+I: pbuilder-time-stamp: 1712863949