SIF extraction failure with image containing pseudo device (/dev)

[cclerget]

Version of Singularity:

What version of Singularity are you using? Run:

master

Expected behavior

Build succeed

Actual behavior

Note: this also fail with --fakeroot because unsquashfs attempt to set time for non-existent pseudo devices

$ singularity build /tmp/ubuntu.sif library://ubuntu:20.04
INFO:    Starting build...
INFO:    Using cached image
ERROR:   unpackSIF failed: root filesystem extraction failed: extract command failed: WARNING: passwd file doesn't exist in container, not updating
WARNING: group file doesn't exist in container, not updating
WARNING: Skipping mount /etc/hosts [binds]: /etc/hosts doesn't exist in container
WARNING: Skipping mount /etc/localtime [binds]: /etc/localtime doesn't exist in container
WARNING: Skipping mount proc [kernel]: /proc doesn't exist in container
WARNING: Skipping mount /usr/local/var/singularity/mnt/session/tmp [tmp]: /tmp doesn't exist in container
WARNING: Skipping mount /usr/local/var/singularity/mnt/session/var/tmp [tmp]: /var/tmp doesn't exist in container
WARNING: Skipping mount /usr/local/var/singularity/mnt/session/etc/resolv.conf [files]: /etc/resolv.conf doesn't exist in container

create_inode: could not create character device /image/rootfs/dev/full, because you're not superuser!

create_inode: could not create character device /image/rootfs/dev/null, because you're not superuser!

create_inode: could not create character device /image/rootfs/dev/random, because you're not superuser!

create_inode: could not create character device /image/rootfs/dev/tty, because you're not superuser!

create_inode: could not create character device /image/rootfs/dev/urandom, because you're not superuser!

create_inode: could not create character device /image/rootfs/dev/zero, because you're not superuser!
Parallel unsquashfs: Using 6 processors
4197 inodes (4657 blocks) to write



created 3894 files
created 601 directories
created 295 symlinks
created 0 devices
created 0 fifos
: exit status 1

What OS/distro are you running

$ cat /etc/os-release
NAME="Ubuntu"
VERSION="20.04.1 LTS (Focal Fossa)"
ID=ubuntu
ID_LIKE=debian
PRETTY_NAME="Ubuntu 20.04.1 LTS"
VERSION_ID="20.04"
HOME_URL="https://www.ubuntu.com/"
SUPPORT_URL="https://help.ubuntu.com/"
BUG_REPORT_URL="https://bugs.launchpad.net/ubuntu/"
PRIVACY_POLICY_URL="https://www.ubuntu.com/legal/terms-and-policies/privacy-policy"
VERSION_CODENAME=focal
UBUNTU_CODENAME=focal

How did you install Singularity

Git

[cclerget]

Note, it happens with unsquashfs 4.4 and is similar to #5668