Pbuilder-dist cannot create a 26.10 chroot

Ubuntu Version

Ubuntu 26.04 LTS

Desktop Environment (if applicable)

None (server/headless)

Problem Description

Running yes | pbuilder-dist stonking arm64 create --updates-only prints a bunch of normal logs, but then ends with an error.

Relevant System Information

The 26.04 install is running in a docker container.

Error Messages / Logs

Normal logs to start:

I: Logging to /home/app/pbuilder/stonking_result/last_operation.log
W: cgroups are not available on the host, not using them.
I: Distribution is stonking.
I: Current time: Mon Aug 31 19:21:08 UTC 2026
I: pbuilder-time-stamp: 1788204068
I: Building the build environment
I: running debootstrap
/usr/sbin/debootstrap
I: Target architecture can be executed
I: Retrieving InRelease 
I: Checking Release signature
I: Valid Release signature (key id F6ECB3762474EDA9D21B7022871920D1991BC93C)
I: Retrieving Packages 
I: Validating Packages 
I: Resolving dependencies of required packages...
I: Resolving dependencies of base packages...
I: Checking component main on http://ports.ubuntu.com...
I: Retrieving apt 3.3.3
I: Validating apt 3.3.3
I: Retrieving base-files 14.2ubuntu1
I: Validating base-files 14.2ubuntu1
I: Validating base-passwd 3.6.8
I: Retrieving bash 5.3-3ubuntu1
I: Validating bash 5.3-3ubuntu1
I: Retrieving binutils 2.47-2ubuntu1
I: Validating binutils 2.47-2ubuntu1
I: Retrieving binutils-aarch64-linux-gnu 2.47-2ubuntu1
I: Validating binutils-aarch64-linux-gnu 2.47-2ubuntu1
I: Retrieving binutils-common 2.47-2ubuntu1
I: Validating binutils-common 2.47-2ubuntu1
I: Validating bsdutils 1:2.41.3-3ubuntu2
I: Retrieving build-essential 12.12ubuntu3
I: Validating build-essential 12.12ubuntu3
I: Validating bzip2 1.0.8-6build2
I: Retrieving coreutils 9.5-1ubuntu2+0.0.0~ubuntu29
I: Validating coreutils 9.5-1ubuntu2+0.0.0~ubuntu29
I: Retrieving coreutils-from-uutils 0.0.0~ubuntu29
I: Validating coreutils-from-uutils 0.0.0~ubuntu29
I: Validating cpp 4:15.2.0-5ubuntu1
I: Retrieving cpp-15 15.3.0-2ubuntu1
I: Validating cpp-15 15.3.0-2ubuntu1
I: Retrieving cpp-15-aarch64-linux-gnu 15.3.0-2ubuntu1
I: Validating cpp-15-aarch64-linux-gnu 15.3.0-2ubuntu1
I: Validating cpp-aarch64-linux-gnu 4:15.2.0-5ubuntu1
I: Validating dash 0.5.12-12ubuntu3
I: Validating debconf 1.5.92
I: Validating debianutils 5.23.2build1
I: Validating diffutils 1:3.12-1
I: Validating dpkg 1.23.7ubuntu1
I: Validating dpkg-dev 1.23.7ubuntu1
I: Retrieving e2fsprogs 1.47.4-1
I: Validating e2fsprogs 1.47.4-1
I: Retrieving findutils 4.11.0-2
I: Validating findutils 4.11.0-2
I: Validating g++ 4:15.2.0-5ubuntu1
I: Retrieving g++-15 15.3.0-2ubuntu1
I: Validating g++-15 15.3.0-2ubuntu1
I: Retrieving g++-15-aarch64-linux-gnu 15.3.0-2ubuntu1
I: Validating g++-15-aarch64-linux-gnu 15.3.0-2ubuntu1
I: Validating g++-aarch64-linux-gnu 4:15.2.0-5ubuntu1
I: Validating gcc 4:15.2.0-5ubuntu1
I: Retrieving gcc-15 15.3.0-2ubuntu1
I: Validating gcc-15 15.3.0-2ubuntu1
I: Retrieving gcc-15-aarch64-linux-gnu 15.3.0-2ubuntu1
I: Validating gcc-15-aarch64-linux-gnu 15.3.0-2ubuntu1
I: Retrieving gcc-15-base 15.3.0-2ubuntu1
I: Validating gcc-15-base 15.3.0-2ubuntu1
I: Retrieving gcc-16-base 16.2.0-1ubuntu1
I: Validating gcc-16-base 16.2.0-1ubuntu1
I: Validating gcc-aarch64-linux-gnu 4:15.2.0-5ubuntu1
I: Retrieving gnu-coreutils 9.10-1ubuntu2
I: Validating gnu-coreutils 9.10-1ubuntu2
I: Validating grep 3.12-1
I: Retrieving gzip 1.14-1~exp2ubuntu3
I: Validating gzip 1.14-1~exp2ubuntu3
I: Validating hostname 3.25build1
I: Validating init-system-helpers 1.69
I: Validating libacl1 2.3.2-2
I: Retrieving libapt-pkg7.0 3.3.3
I: Validating libapt-pkg7.0 3.3.3
I: Retrieving libasan8 16.2.0-1ubuntu1
I: Validating libasan8 16.2.0-1ubuntu1
I: Retrieving libatomic1 16.2.0-1ubuntu1
I: Validating libatomic1 16.2.0-1ubuntu1
I: Retrieving libattr1 1:2.6.0-1
I: Validating libattr1 1:2.6.0-1
I: Retrieving libaudit-common 1:4.1.2-1ubuntu1
I: Validating libaudit-common 1:4.1.2-1ubuntu1
I: Retrieving libaudit1 1:4.1.2-1ubuntu1
I: Validating libaudit1 1:4.1.2-1ubuntu1
I: Retrieving libbinutils 2.47-2ubuntu1
I: Validating libbinutils 2.47-2ubuntu1
I: Validating libblkid1 2.41.3-3ubuntu2
I: Retrieving libbsd0 0.12.2-3
I: Validating libbsd0 0.12.2-3
I: Validating libbz2-1.0 1.0.8-6build2
I: Validating libc-bin 2.43-2ubuntu2.3
I: Validating libc-dev-bin 2.43-2ubuntu2.3
I: Validating libc-gconv-modules-extra 2.43-2ubuntu2.3
I: Validating libc6 2.43-2ubuntu2.3
I: Validating libc6-dev 2.43-2ubuntu2.3
I: Retrieving libcap-ng0 0.9.3-1
I: Validating libcap-ng0 0.9.3-1
I: Retrieving libcc1-0 16.2.0-1ubuntu1
I: Validating libcc1-0 16.2.0-1ubuntu1
I: Retrieving libcom-err2 1.47.4-1
I: Validating libcom-err2 1.47.4-1
I: Retrieving libcrypt1 1:4.5.2+20251210-1
I: Validating libcrypt1 1:4.5.2+20251210-1
I: Retrieving libctf-nobfd0 2.47-2ubuntu1
I: Validating libctf-nobfd0 2.47-2ubuntu1
I: Retrieving libctf0 2.47-2ubuntu1
I: Validating libctf0 2.47-2ubuntu1
I: Retrieving libdb5.3t64 5.3.28+dfsg2-11
I: Validating libdb5.3t64 5.3.28+dfsg2-11
I: Validating libdebconfclient0 0.280ubuntu1
I: Validating libdpkg-perl 1.23.7ubuntu1
I: Retrieving libext2fs2t64 1.47.4-1
I: Validating libext2fs2t64 1.47.4-1
I: Retrieving libgcc-15-dev 15.3.0-2ubuntu1
I: Validating libgcc-15-dev 15.3.0-2ubuntu1
I: Retrieving libgcc-s1 16.2.0-1ubuntu1
I: Validating libgcc-s1 16.2.0-1ubuntu1
I: Validating libgdbm-compat4t64 1.26-1build1
I: Validating libgdbm6t64 1.26-1build1
I: Validating libgmp10 2:6.3.0+dfsg-5ubuntu2
I: Retrieving libgomp1 16.2.0-1ubuntu1
I: Validating libgomp1 16.2.0-1ubuntu1
I: Retrieving libgprofng0 2.47-2ubuntu1
I: Validating libgprofng0 2.47-2ubuntu1
I: Retrieving libhwasan0 16.2.0-1ubuntu1
I: Validating libhwasan0 16.2.0-1ubuntu1
I: Retrieving libisl23 0.28-1
I: Validating libisl23 0.28-1
I: Retrieving libitm1 16.2.0-1ubuntu1
I: Validating libitm1 16.2.0-1ubuntu1
I: Retrieving libjansson4 2.15.1-1
I: Validating libjansson4 2.15.1-1
I: Retrieving liblsan0 16.2.0-1ubuntu1
I: Validating liblsan0 16.2.0-1ubuntu1
I: Retrieving liblz4-1 1.10.0-10
I: Validating liblz4-1 1.10.0-10
I: Validating liblzma5 5.8.3-1
I: Retrieving libmd0 1.2.0-2
I: Validating libmd0 1.2.0-2
I: Validating libmount1 2.41.3-3ubuntu2
I: Validating libmpc3 1.3.1-3
I: Validating libmpfr6 4.2.2-3
I: Retrieving libncursesw6 6.6+20260608-2
I: Validating libncursesw6 6.6+20260608-2
I: Retrieving libpam-modules 1.7.0-5ubuntu4
I: Validating libpam-modules 1.7.0-5ubuntu4
I: Retrieving libpam-modules-bin 1.7.0-5ubuntu4
I: Validating libpam-modules-bin 1.7.0-5ubuntu4
I: Retrieving libpam-runtime 1.7.0-5ubuntu4
I: Validating libpam-runtime 1.7.0-5ubuntu4
I: Retrieving libpam0g 1.7.0-5ubuntu4
I: Validating libpam0g 1.7.0-5ubuntu4
I: Validating libpcre2-8-0 10.46-1build1
I: Retrieving libperl5.40 5.40.1-8ubuntu1
I: Validating libperl5.40 5.40.1-8ubuntu1
I: Validating libproc2-0 2:4.0.4-9ubuntu1
I: Retrieving libseccomp2 2.6.1-1ubuntu1
I: Validating libseccomp2 2.6.1-1ubuntu1
I: Retrieving libselinux1 3.11-2
I: Validating libselinux1 3.11-2
I: Retrieving libsemanage-common 3.11-1
I: Validating libsemanage-common 3.11-1
I: Retrieving libsemanage2 3.11-1
I: Validating libsemanage2 3.11-1
I: Retrieving libsepol2 3.11-1
I: Validating libsepol2 3.11-1
I: Retrieving libsframe3 2.47-2ubuntu1
I: Validating libsframe3 2.47-2ubuntu1
I: Validating libsmartcols1 2.41.3-3ubuntu2
I: Retrieving libss2 1.47.4-1
I: Validating libss2 1.47.4-1
I: Retrieving libssl3t64 3.5.5-1ubuntu4
I: Validating libssl3t64 3.5.5-1ubuntu4
I: Retrieving libssl4 4.0.1-1ubuntu4
I: Validating libssl4 4.0.1-1ubuntu4
I: Retrieving libstdc++-15-dev 15.3.0-2ubuntu1
I: Validating libstdc++-15-dev 15.3.0-2ubuntu1
I: Retrieving libstdc++6 16.2.0-1ubuntu1
I: Validating libstdc++6 16.2.0-1ubuntu1
I: Retrieving libsystemd-shared 261.2-1ubuntu1
I: Validating libsystemd-shared 261.2-1ubuntu1
I: Retrieving libsystemd0 261.2-1ubuntu1
I: Validating libsystemd0 261.2-1ubuntu1
I: Retrieving libtinfo6 6.6+20260608-2
I: Validating libtinfo6 6.6+20260608-2
I: Retrieving libtsan2 16.2.0-1ubuntu1
I: Validating libtsan2 16.2.0-1ubuntu1
I: Retrieving libubsan1 16.2.0-1ubuntu1
I: Validating libubsan1 16.2.0-1ubuntu1
I: Retrieving libudev1 261.2-1ubuntu1
I: Validating libudev1 261.2-1ubuntu1
I: Validating libuuid1 2.41.3-3ubuntu2
I: Validating libxxhash0 0.8.3-2build1
I: Retrieving libzstd1 1.5.7+dfsg-4
I: Validating libzstd1 1.5.7+dfsg-4
I: Validating linux-libc-dev 7.0.0-14.14
I: Validating login 1:4.16.0-2+really2.41.3-3ubuntu2
I: Retrieving login.defs 1:4.19.3-2ubuntu1
I: Validating login.defs 1:4.19.3-2ubuntu1
I: Retrieving logsave 1.47.4-1
I: Validating logsave 1.47.4-1
I: Retrieving lto-disabled-list 81
I: Validating lto-disabled-list 81
I: Validating make 4.4.1-3
I: Retrieving mawk 1.3.4.20260302-1
I: Validating mawk 1.3.4.20260302-1
I: Validating mount 2.41.3-3ubuntu2
I: Retrieving ncurses-base 6.6+20260608-2
I: Validating ncurses-base 6.6+20260608-2
I: Retrieving ncurses-bin 6.6+20260608-2
I: Validating ncurses-bin 6.6+20260608-2
I: Retrieving openssl-provider-legacy 4.0.1-1ubuntu4
I: Validating openssl-provider-legacy 4.0.1-1ubuntu4
I: Retrieving passwd 1:4.19.3-2ubuntu1
I: Validating passwd 1:4.19.3-2ubuntu1
I: Validating patch 2.8-2build1
I: Retrieving perl 5.40.1-8ubuntu1
I: Validating perl 5.40.1-8ubuntu1
I: Retrieving perl-base 5.40.1-8ubuntu1
I: Validating perl-base 5.40.1-8ubuntu1
I: Retrieving perl-modules-5.40 5.40.1-8ubuntu1
I: Validating perl-modules-5.40 5.40.1-8ubuntu1
I: Validating procps 2:4.0.4-9ubuntu1
I: Retrieving rpcsvc-proto 1.4.4-1
I: Validating rpcsvc-proto 1.4.4-1
I: Retrieving rust-coreutils 0.10.0-1ubuntu1
I: Validating rust-coreutils 0.10.0-1ubuntu1
I: Retrieving sed 4.9-3
I: Validating sed 4.9-3
I: Validating sensible-utils 0.0.26build1
I: Retrieving sqv 1.4.0-1ubuntu2
I: Validating sqv 1.4.0-1ubuntu2
I: Retrieving systemd 261.2-1ubuntu1
I: Validating systemd 261.2-1ubuntu1
I: Retrieving sysvinit-utils 3.18-1ubuntu1
I: Validating sysvinit-utils 3.18-1ubuntu1
I: Validating tar 1.35+dfsg-4
I: Validating ubuntu-keyring 2023.11.28.1build1
I: Validating util-linux 2.41.3-3ubuntu2
I: Validating xz-utils 5.8.3-1
I: Retrieving zlib1g 1:1.3.dfsg+really1.3.2-3ubuntu1
I: Validating zlib1g 1:1.3.dfsg+really1.3.2-3ubuntu1
I: Chosen extractor for .deb packages: dpkg-deb
I: Extracting base-files...
I: Extracting base-passwd...
I: Extracting bash...
I: Extracting bsdutils...
I: Extracting coreutils...
I: Extracting coreutils-from-uutils...
I: Extracting dash...
I: Extracting debconf...
I: Extracting debianutils...
I: Extracting diffutils...
I: Extracting dpkg...
I: Extracting e2fsprogs...
I: Extracting findutils...
I: Extracting gcc-16-base...
I: Extracting gnu-coreutils...
I: Extracting grep...
I: Extracting gzip...
I: Extracting hostname...
I: Extracting init-system-helpers...
I: Extracting libacl1...
I: Extracting libattr1...
I: Extracting libaudit-common...
I: Extracting libaudit1...
I: Extracting libblkid1...
I: Extracting libbsd0...
I: Extracting libbz2-1.0...
I: Extracting libc-bin...
I: Extracting libc-gconv-modules-extra...
I: Extracting libc6...
I: Extracting libcap-ng0...
I: Extracting libcom-err2...
I: Extracting libcrypt1...
I: Extracting libdb5.3t64...
I: Extracting libdebconfclient0...
I: Extracting libext2fs2t64...
I: Extracting libgcc-s1...
I: Extracting libgmp10...
I: Extracting liblzma5...
I: Extracting libmd0...
I: Extracting libmount1...
I: Extracting libncursesw6...
I: Extracting libpam-modules...
I: Extracting libpam-modules-bin...
I: Extracting libpam-runtime...
I: Extracting libpam0g...
I: Extracting libpcre2-8-0...
I: Extracting libproc2-0...
I: Extracting libselinux1...
I: Extracting libsemanage-common...
I: Extracting libsemanage2...
I: Extracting libsepol2...
I: Extracting libsmartcols1...
I: Extracting libss2...
I: Extracting libssl3t64...
I: Extracting libssl4...
I: Extracting libsystemd-shared...
I: Extracting libsystemd0...
I: Extracting libtinfo6...
I: Extracting libudev1...
I: Extracting libuuid1...
I: Extracting libzstd1...
I: Extracting login...
I: Extracting login.defs...
I: Extracting logsave...
I: Extracting mawk...
I: Extracting mount...
I: Extracting ncurses-base...
I: Extracting ncurses-bin...
I: Extracting openssl-provider-legacy...
I: Extracting passwd...
I: Extracting perl-base...
I: Extracting procps...
I: Extracting rust-coreutils...
I: Extracting sed...
I: Extracting sensible-utils...
I: Extracting systemd...
I: Extracting sysvinit-utils...
I: Extracting tar...
I: Extracting util-linux...
I: Extracting zlib1g...
W: Failure trying to run: chroot "/var/cache/pbuilder/build/310" /bin/true
W: See /var/cache/pbuilder/build/310/debootstrap/debootstrap.log for details
E: debootstrap failed

Tail of debootstrap.log:

2026-08-31 19:21:33 URL:http://ports.ubuntu.com/pool/main/g/gcc-16/liblsan0_16.2.0-1ubuntu1_arm64.deb [1336216/1336216] -> "/var/cache/pbuilder/aptcache/ubuntu/liblsan0_16.2.0-1ubuntu1_arm64.deb" [1]
2026-08-31 19:21:34 URL:http://ports.ubuntu.com/pool/main/l/lz4/liblz4-1_1.10.0-10_arm64.deb [74954/74954] -> "/var/cache/pbuilder/aptcache/ubuntu/liblz4-1_1.10.0-10_arm64.deb" [1]
2026-08-31 19:21:34 URL:http://ports.ubuntu.com/pool/main/libm/libmd/libmd0_1.2.0-2_arm64.deb [28592/28592] -> "/var/cache/pbuilder/aptcache/ubuntu/libmd0_1.2.0-2_arm64.deb" [1]
2026-08-31 19:21:34 URL:http://ports.ubuntu.com/pool/main/n/ncurses/libncursesw6_6.6+20260608-2_arm64.deb [147376/147376] -> "/var/cache/pbuilder/aptcache/ubuntu/libncursesw6_6.6+20260608-2_arm64.deb" [1]
2026-08-31 19:21:35 URL:http://ports.ubuntu.com/pool/main/p/pam/libpam-modules_1.7.0-5ubuntu4_arm64.deb [190888/190888] -> "/var/cache/pbuilder/aptcache/ubuntu/libpam-modules_1.7.0-5ubuntu4_arm64.deb" [1]
2026-08-31 19:21:35 URL:http://ports.ubuntu.com/pool/main/p/pam/libpam-modules-bin_1.7.0-5ubuntu4_arm64.deb [43666/43666] -> "/var/cache/pbuilder/aptcache/ubuntu/libpam-modules-bin_1.7.0-5ubuntu4_arm64.deb" [1]
2026-08-31 19:21:36 URL:http://ports.ubuntu.com/pool/main/p/pam/libpam-runtime_1.7.0-5ubuntu4_all.deb [148822/148822] -> "/var/cache/pbuilder/aptcache/ubuntu/libpam-runtime_1.7.0-5ubuntu4_all.deb" [1]
2026-08-31 19:21:36 URL:http://ports.ubuntu.com/pool/main/p/pam/libpam0g_1.7.0-5ubuntu4_arm64.deb [64656/64656] -> "/var/cache/pbuilder/aptcache/ubuntu/libpam0g_1.7.0-5ubuntu4_arm64.deb" [1]
2026-08-31 19:21:37 URL:http://ports.ubuntu.com/pool/main/p/perl/libperl5.40_5.40.1-8ubuntu1_arm64.deb [4779762/4779762] -> "/var/cache/pbuilder/aptcache/ubuntu/libperl5.40_5.40.1-8ubuntu1_arm64.deb" [1]
2026-08-31 19:21:37 URL:http://ports.ubuntu.com/pool/main/libs/libseccomp/libseccomp2_2.6.1-1ubuntu1_arm64.deb [51696/51696] -> "/var/cache/pbuilder/aptcache/ubuntu/libseccomp2_2.6.1-1ubuntu1_arm64.deb" [1]
2026-08-31 19:21:37 URL:http://ports.ubuntu.com/pool/main/libs/libselinux/libselinux1_3.11-2_arm64.deb [93060/93060] -> "/var/cache/pbuilder/aptcache/ubuntu/libselinux1_3.11-2_arm64.deb" [1]
2026-08-31 19:21:37 URL:http://ports.ubuntu.com/pool/main/libs/libsemanage/libsemanage-common_3.11-1_all.deb [7140/7140] -> "/var/cache/pbuilder/aptcache/ubuntu/libsemanage-common_3.11-1_all.deb" [1]
2026-08-31 19:21:38 URL:http://ports.ubuntu.com/pool/main/libs/libsemanage/libsemanage2_3.11-1_arm64.deb [96398/96398] -> "/var/cache/pbuilder/aptcache/ubuntu/libsemanage2_3.11-1_arm64.deb" [1]
2026-08-31 19:21:38 URL:http://ports.ubuntu.com/pool/main/libs/libsepol/libsepol2_3.11-1_arm64.deb [306352/306352] -> "/var/cache/pbuilder/aptcache/ubuntu/libsepol2_3.11-1_arm64.deb" [1]
2026-08-31 19:21:39 URL:http://ports.ubuntu.com/pool/main/b/binutils/libsframe3_2.47-2ubuntu1_arm64.deb [21374/21374] -> "/var/cache/pbuilder/aptcache/ubuntu/libsframe3_2.47-2ubuntu1_arm64.deb" [1]
2026-08-31 19:21:39 URL:http://ports.ubuntu.com/pool/main/e/e2fsprogs/libss2_1.47.4-1_arm64.deb [17420/17420] -> "/var/cache/pbuilder/aptcache/ubuntu/libss2_1.47.4-1_arm64.deb" [1]
2026-08-31 19:21:40 URL:http://ports.ubuntu.com/pool/main/o/openssl/libssl3t64_3.5.5-1ubuntu4_arm64.deb [2763516/2763516] -> "/var/cache/pbuilder/aptcache/ubuntu/libssl3t64_3.5.5-1ubuntu4_arm64.deb" [1]
2026-08-31 19:21:41 URL:http://ports.ubuntu.com/pool/main/o/openssl/libssl4_4.0.1-1ubuntu4_arm64.deb [2777714/2777714] -> "/var/cache/pbuilder/aptcache/ubuntu/libssl4_4.0.1-1ubuntu4_arm64.deb" [1]
2026-08-31 19:21:42 URL:http://ports.ubuntu.com/pool/main/g/gcc-15/libstdc++-15-dev_15.3.0-2ubuntu1_arm64.deb [2877152/2877152] -> "/var/cache/pbuilder/aptcache/ubuntu/libstdc++-15-dev_15.3.0-2ubuntu1_arm64.deb" [1]
2026-08-31 19:21:42 URL:http://ports.ubuntu.com/pool/main/g/gcc-16/libstdc++6_16.2.0-1ubuntu1_arm64.deb [826890/826890] -> "/var/cache/pbuilder/aptcache/ubuntu/libstdc++6_16.2.0-1ubuntu1_arm64.deb" [1]
2026-08-31 19:21:43 URL:http://ports.ubuntu.com/pool/main/s/systemd/libsystemd-shared_261.2-1ubuntu1_arm64.deb [2613126/2613126] -> "/var/cache/pbuilder/aptcache/ubuntu/libsystemd-shared_261.2-1ubuntu1_arm64.deb" [1]
2026-08-31 19:21:44 URL:http://ports.ubuntu.com/pool/main/s/systemd/libsystemd0_261.2-1ubuntu1_arm64.deb [500148/500148] -> "/var/cache/pbuilder/aptcache/ubuntu/libsystemd0_261.2-1ubuntu1_arm64.deb" [1]
2026-08-31 19:21:44 URL:http://ports.ubuntu.com/pool/main/n/ncurses/libtinfo6_6.6+20260608-2_arm64.deb [104892/104892] -> "/var/cache/pbuilder/aptcache/ubuntu/libtinfo6_6.6+20260608-2_arm64.deb" [1]
2026-08-31 19:21:45 URL:http://ports.ubuntu.com/pool/main/g/gcc-16/libtsan2_16.2.0-1ubuntu1_arm64.deb [2744780/2744780] -> "/var/cache/pbuilder/aptcache/ubuntu/libtsan2_16.2.0-1ubuntu1_arm64.deb" [1]
2026-08-31 19:21:45 URL:http://ports.ubuntu.com/pool/main/g/gcc-16/libubsan1_16.2.0-1ubuntu1_arm64.deb [1192430/1192430] -> "/var/cache/pbuilder/aptcache/ubuntu/libubsan1_16.2.0-1ubuntu1_arm64.deb" [1]
2026-08-31 19:21:46 URL:http://ports.ubuntu.com/pool/main/s/systemd/libudev1_261.2-1ubuntu1_arm64.deb [157982/157982] -> "/var/cache/pbuilder/aptcache/ubuntu/libudev1_261.2-1ubuntu1_arm64.deb" [1]
2026-08-31 19:21:46 URL:http://ports.ubuntu.com/pool/main/libz/libzstd/libzstd1_1.5.7+dfsg-4_arm64.deb [275684/275684] -> "/var/cache/pbuilder/aptcache/ubuntu/libzstd1_1.5.7+dfsg-4_arm64.deb" [1]
2026-08-31 19:21:47 URL:http://ports.ubuntu.com/pool/main/s/shadow/login.defs_4.19.3-2ubuntu1_all.deb [60540/60540] -> "/var/cache/pbuilder/aptcache/ubuntu/login.defs_1%3a4.19.3-2ubuntu1_all.deb" [1]
2026-08-31 19:21:47 URL:http://ports.ubuntu.com/pool/main/e/e2fsprogs/logsave_1.47.4-1_arm64.deb [19528/19528] -> "/var/cache/pbuilder/aptcache/ubuntu/logsave_1.47.4-1_arm64.deb" [1]
2026-08-31 19:21:47 URL:http://ports.ubuntu.com/pool/main/l/lto-disabled-list/lto-disabled-list_81_all.deb [14322/14322] -> "/var/cache/pbuilder/aptcache/ubuntu/lto-disabled-list_81_all.deb" [1]
2026-08-31 19:21:47 URL:http://ports.ubuntu.com/pool/main/m/mawk/mawk_1.3.4.20260302-1_arm64.deb [127608/127608] -> "/var/cache/pbuilder/aptcache/ubuntu/mawk_1.3.4.20260302-1_arm64.deb" [1]
2026-08-31 19:21:48 URL:http://ports.ubuntu.com/pool/main/n/ncurses/ncurses-base_6.6+20260608-2_all.deb [23224/23224] -> "/var/cache/pbuilder/aptcache/ubuntu/ncurses-base_6.6+20260608-2_all.deb" [1]
2026-08-31 19:21:48 URL:http://ports.ubuntu.com/pool/main/n/ncurses/ncurses-bin_6.6+20260608-2_arm64.deb [190630/190630] -> "/var/cache/pbuilder/aptcache/ubuntu/ncurses-bin_6.6+20260608-2_arm64.deb" [1]
2026-08-31 19:21:48 URL:http://ports.ubuntu.com/pool/main/o/openssl/openssl-provider-legacy_4.0.1-1ubuntu4_arm64.deb [41566/41566] -> "/var/cache/pbuilder/aptcache/ubuntu/openssl-provider-legacy_4.0.1-1ubuntu4_arm64.deb" [1]
2026-08-31 19:21:49 URL:http://ports.ubuntu.com/pool/main/s/shadow/passwd_4.19.3-2ubuntu1_arm64.deb [1107156/1107156] -> "/var/cache/pbuilder/aptcache/ubuntu/passwd_1%3a4.19.3-2ubuntu1_arm64.deb" [1]
2026-08-31 19:21:49 URL:http://ports.ubuntu.com/pool/main/p/perl/perl_5.40.1-8ubuntu1_arm64.deb [262138/262138] -> "/var/cache/pbuilder/aptcache/ubuntu/perl_5.40.1-8ubuntu1_arm64.deb" [1]
2026-08-31 19:21:50 URL:http://ports.ubuntu.com/pool/main/p/perl/perl-base_5.40.1-8ubuntu1_arm64.deb [1786836/1786836] -> "/var/cache/pbuilder/aptcache/ubuntu/perl-base_5.40.1-8ubuntu1_arm64.deb" [1]
2026-08-31 19:21:51 URL:http://ports.ubuntu.com/pool/main/p/perl/perl-modules-5.40_5.40.1-8ubuntu1_all.deb [3212802/3212802] -> "/var/cache/pbuilder/aptcache/ubuntu/perl-modules-5.40_5.40.1-8ubuntu1_all.deb" [1]
2026-08-31 19:21:51 URL:http://ports.ubuntu.com/pool/main/r/rpcsvc-proto/rpcsvc-proto_1.4.4-1_arm64.deb [65642/65642] -> "/var/cache/pbuilder/aptcache/ubuntu/rpcsvc-proto_1.4.4-1_arm64.deb" [1]
2026-08-31 19:21:52 URL:http://ports.ubuntu.com/pool/main/r/rust-coreutils/rust-coreutils_0.10.0-1ubuntu1_arm64.deb [4351266/4351266] -> "/var/cache/pbuilder/aptcache/ubuntu/rust-coreutils_0.10.0-1ubuntu1_arm64.deb" [1]
2026-08-31 19:21:52 URL:http://ports.ubuntu.com/pool/main/s/sed/sed_4.9-3_arm64.deb [192480/192480] -> "/var/cache/pbuilder/aptcache/ubuntu/sed_4.9-3_arm64.deb" [1]
2026-08-31 19:21:53 URL:http://ports.ubuntu.com/pool/main/r/rust-sequoia-sqv/sqv_1.4.0-1ubuntu2_arm64.deb [812150/812150] -> "/var/cache/pbuilder/aptcache/ubuntu/sqv_1.4.0-1ubuntu2_arm64.deb" [1]
2026-08-31 19:21:54 URL:http://ports.ubuntu.com/pool/main/s/systemd/systemd_261.2-1ubuntu1_arm64.deb [3110686/3110686] -> "/var/cache/pbuilder/aptcache/ubuntu/systemd_261.2-1ubuntu1_arm64.deb" [1]
2026-08-31 19:21:54 URL:http://ports.ubuntu.com/pool/main/s/sysvinit/sysvinit-utils_3.18-1ubuntu1_arm64.deb [30918/30918] -> "/var/cache/pbuilder/aptcache/ubuntu/sysvinit-utils_3.18-1ubuntu1_arm64.deb" [1]
2026-08-31 19:21:55 URL:http://ports.ubuntu.com/pool/main/z/zlib/zlib1g_1.3.dfsg+really1.3.2-3ubuntu1_arm64.deb [64380/64380] -> "/var/cache/pbuilder/aptcache/ubuntu/zlib1g_1%3a1.3.dfsg+really1.3.2-3ubuntu1_arm64.deb" [1]
thread 'main' (4829) panicked at src/bin/coreutils.rs:81:13:
Unable to read /proc/self/exe: Too many levels of symbolic links (os error 40)
note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace
Aborted (core dumped)
E: End of debootstrap.log
W: Aborting with an error

What I’ve Tried

I’ve already upgraded from 24.04 to 26.04 and the latest versions of all packages to see if the rust-coreutils or pbuilder packages have a workaround, but it seems like they don’t.

This turns out to be because the chroot is sanity checked with /bin/true, which in the rust coreutils is a multi use executable that checks its exec path name to see what it should do. However in a debootstrap+docker environment /proc/self/exe is symlinked to itself, causing the loop. this wasn’t a problem before with the old coreutils because true didn’t do that. there is an env var you can set to tell the debootstrap environment it is in a container (it is imaginatively named container) and if you set it to lxc instead of docker then the procfs is properly mounted into the environment instead of linked to itself.

So lots of broken stuff going on.

1 Like

Welcome to Ubuntu Discourse :slight_smile:

I am in the dark about what you are trying to do, however I would suggest filing bug reports against the relevant packages as needs be.

Additionally, 26.10 is still in development so that also needs to be taken into account.

Thanks

What I’m trying to do, is get ready to do some packaging for 26.10. I know 26.10 is in development, but as I was told in the last bug I filed against an ubuntu package, if you don’t file a bug before the final release they don’t particularly care to fix it.

Ubuntu MOTU here.

This here is the problem. pbuilder-dist isn’t meant to run inside a docker container. What you’re running is essentially a chroot inside a chroot, which is why you’re getting this:

Unable to read /proc/self/exe: Too many levels of symbolic links (os error 40)

Basically, when pbuilder-dist runs, it does so by bind-mounting the /proc. However, in docker’s case, it’s already bind-mounted, so it’s a double-bind-mount, so pbuilder-dist sees it as two levels of symbolic links, which is not good.

So, what you’re doing is running pbuilder-dist in a way that it was never designed to do. It would be better at that point to run it in an LXD container, which is more akin to a VM.

TL;DR: What you’re doing is unsupported.

3 Likes

The fact that lying to debootstrap with “container=lxc” magically fixes it just proves that the chroot is completely capable of working - it’s just tripped up by rigid container assumptions and a panic-happy “coreutils” binary.

This definitely needs an upstream bug report in “uutils-coreutils” and on Launchpad for Ubuntu 26.10, before this lands in release and nukes everyone’s build pipelines.

Then file a bug report. Nobody is stopping you.

1 Like