### Bug Description Sometimes when pulling a part which may use SSH authentication to allow e.g. cloning a Git repository, the prompt to enter your SSH key's password to unlock it for authenticating doesn't appear and instead users see an endless `Pulling <part> :: ... | (xy.zs)`. Note that this has only been observed to happen when `--verbosity=brief` or higher - I imagine this is related to a "recent" rework of how the command line printing functioned. The password prompt will appear for longer when using `brief` before disappearing; the prompt will persist for a good long while when using `quiet`. ### To Reproduce Use an SSH key with a passphrase. `snapcraft --use-lxd --bind-ssh --verbosity=verbose` During the pull step enter the password to your SSH key and press enter, watch the build progress. Repeat twice and the build should succeed (vacuously, `nil` part). ### Environment Observed with snapcraft revision 10607, though this has been seen on earlier revisions. ### snapcraft.yaml ```shell name: my-snap-name # you probably want to 'snapcraft register <name>' base: core22 # the base snap is the execution environment for this snap version: '0.1' # just for humans, typically '1.2+git' or '1.3.2' summary: Single-line elevator pitch for your amazing snap # 79 char long summary description: | This is my-snap's description. You have a paragraph or two to tell the most important story about your snap. Keep it under 100 words though, we live in tweetspace and your description wants to look good in the snap store. grade: devel # must be 'stable' to release into candidate/stable channels confinement: devmode # use 'strict' once you have the right plugs and slots parts: matterhorn: plugin: nil source: https://github.com/matterhorn-chat/matterhorn source-depth: 1 source-type: git source-branch: 90000.0.0 ``` ### Relevant log output ```shell dilyn@Ares:~/work/snaps/matterhorn-snap -> snapcraft --debug # note this message -- it's strange, so I retry with --bind-ssh The authenticity of host 'github.com (140.82.112.3)' can't be established. ED25519 key fingerprint is SHA256:+DiY3wvvV6TuJJhbpZisF/zLDA0zPMSvHdkr4UvCOqU. This key is not known by any other names Pulling matterhorn :: + craftctl default \ (199.2s) ! Pulling matterhorn :: + craftctl default | (216.6s) ^Interrupted. Full execution log: '/home/dilyn/.local/state/snapcraft/log/snapcraft-20240213-222425.980668.log' dilyn@Ares:~/work/snaps/matterhorn-snap -> snapcraft --debug --bind-ssh Pulling matterhorn :: + craftctl default - (174.3s) Pulling matterhorn :: + craftctl default \ (178.4s) Pulling matterhorn :: + craftctl default | (182.1s) Pulling matterhorn :: Downloading the latest package list from hackage.haskell.org - (6.8s) ``` Note the three instances of "Pulling ..." -- these appear because I hit <CR>. The prompt for my SSH key password briefly flashed on the line before being overwritten by this "Pulling ..." message. When I entered my passphrase, the pull progressed. It happens thrice because the example repository has two submodules which are also cloned. Also strangely, doing this made it so that no new lines were printed and instead the last line was perpetually overwritten with any new information which would normally be added as a new line. For instance, the next few lines are what appear: ``` 'override-pull' in part 'matterhorn' failed with code 1. Review the scriptlet and make sure it's correct. Launching shell on build environment... ``` As the build progressed but eventually errored due to something unrelated to this bug. ``` ### Additional context _No response_