snapcraft clean crashes on snapcraft.yaml with bad indent
Metadata
Current evaluation
snapcraft 2.43.1 (Ubuntu 19.04) crashes with a raw PyYAML traceback when snapcraft.yaml has inconsistent indentation. 7+ years old, no labels, no comments, and the affected 2.x version is long out of support.
Suggested action: close stale
Reason: The report targets snapcraft 2.43.1 on Ubuntu 19.04, a version line that has been out of support for years, and the current codebase is the 3.x rewrite (snapcraft/models, snapcraft/commands) with a different YAML-handling layer than the 2.x code that produced this traceback. The issue has had zero comments, no labels, and no maintainer interaction for over 6 years, and the near-identical Launchpad bug 1608032 was already closed as abandoned, so it is no longer actionable as reported.
Impact:
25
Quick Win:
18.75
Staleness:
92
Complexity:
25
Confidence:
60
Support Request:
15
Issue body
snapcraft felt it was important I share this with you :-)
Running snapcraft on Ubuntu 19.04.
$ snapcraft --version
snapcraft, version 2.43.1+18.10
The log:
$ snapcraft clean
Sorry, an error occurred in Snapcraft:
Traceback (most recent call last):
File "/usr/bin/snapcraft", line 11, in <module>
load_entry_point('snapcraft==2.43.1+18.10', 'console_scripts', 'snapcraft')()
...
File "/usr/lib/python3/dist-packages/yaml/composer.py", line 127, in compose_mapping_node
while not self.check_event(MappingEndEvent):
File "/usr/lib/python3/dist-packages/yaml/parser.py", line 98, in check_event
self.current_event = self.state()
File "/usr/lib/python3/dist-packages/yaml/parser.py", line 439, in parse_block_mapping_key
"expected <block end>, but found %r" % token.id, token.start_mark)
yaml.parser.ParserError: while parsing a block mapping
in "snapcraft.yaml", line 19, column 3
expected <block end>, but found '<block mapping start>'
in "snapcraft.yaml", line 36, column 4
We would appreciate it if you created a bug report at
https://launchpad.net/snapcraft/+filebug with the above text included.
The snapcraft.yaml provoking the crash (note the inconsistent indent level between the two parts):
name: fpm
version: 1.1
summary: Effing Package Management
description: |
Build packages for multiple platforms (deb, rpm, etc) with great ease and sanity.
http://fpm.readthedocs.io/en/latest/
grade: devel
confinement: devmode
apps:
fpm:
environment:
RUBYLIB: $SNAP/usr/lib/ruby/2.3.0:$SNAP/usr/lib/x86_64-linux-gnu/ruby/2.3.0
GEM_HOME: $SNAP/gems
GEM_PATH: $SNAP
command: ruby $SNAP/bin/fpm
parts:
fpm:
source: .
plugin: nil
build-packages:
- build-essential
- ruby-dev
- rubygems-integration
- libreadline-dev
- libssl-dev
- libtinfo-dev
stage-packages:
- ruby
- rubygems-integration
override-build: |
snapcraftctl build
gem install fpm -i $SNAPCRAFT_PART_INSTALL
mangle-shebang:
plugin: nil
after: [fpm]
override-build: |
snapcraftctl build
sed -i 's/#!\/usr\/bin\/ruby/#!\/usr\/bin\/env ruby/' $SNAPCRAFT_STAGE/usr/bin/{gem2.3,rdoc2.3,fpm,rake}
Removing the extra space at the start of the 'mangle-shebang:' line worked around the problem
Evaluation history
| Date | Model | Scores | Action | Summary |
|---|---|---|---|---|
| qwen/qwen3.8-27b |
Impact:
25
Quick Win:
18.75
Staleness:
92
Complexity:
25
Confidence:
60
Support Request:
15
|
close stale | snapcraft 2.43.1 (Ubuntu 19.04) crashes with a raw PyYAML traceback when snapcraft.yaml has inconsistent indentation. 7+ years old, no labels, no comments, and the affected 2.x version is long out of support. | |
| qwen/qwen3.6-35b-a3b |
Staleness:
98
Complexity:
20
Confidence:
90
Support Request:
10
|
close stale | Reports a crash in snapcraft clean when processing a snapcraft.yaml with inconsistent indentation. Provides traceback and workaround. Unlabeled, no maintainer interaction, inactive for over six years. | |
| qwen/qwen3.6-35b-a3b |
Staleness:
95
Complexity:
10
Confidence:
85
Support Request:
90
|
close stale | snapcraft clean crashes due to YAML indentation error in snapcraft.yaml. Issue is 7+ years old, no activity, and the problem is a user configuration error rather than a tool bug. | |
| qwen3.6-35b-a3b-mtp-q6 |
Staleness:
98
Complexity:
5
Confidence:
90
Support Request:
10
|
close stale | Reports a crash in snapcraft clean caused by inconsistent YAML indentation in snapcraft.yaml. The author identified the syntax error and provided a workaround. Issue is 7 years old with no maintainer interaction. | |
| qwen3.6-35b-a3b-mtp-q6 |
Staleness:
98
Complexity:
15
Confidence:
85
Support Request:
20
|
close stale | Reports a crash when running snapcraft clean on a malformed snapcraft.yaml with inconsistent indentation. Issue is over 7 years old with no maintainer response or labels. |
Update history
No update history recorded yet.
Related work
-
Duplicate Of:
snapcraft#1608032
(confidence 70%)
Launchpad bug 1608032 'snapcraft crashes with useless message on bad YAML' reports the same raw-traceback-on-invalid-YAML problem and was closed as abandoned.
Related issues
| Issue | Project | State | Summary | Similarity |
|---|---|---|---|---|
| #1869542 snapcraft unable to find snap/snapcraft.yaml file | snapcraft (launchpad) | open | snapcraft 3.11 (2019) loses snap/snapcraft.yaml after a few builds and drops to the VM shell; workaround is snapcraft clean. 6+ years old, no labels, no maintainer comments, tied to a long-superseded build environment. | |
| #1608032 snapcraft crashes with useless message on bad YAML | snapcraft (launchpad) | closed | Abandoned. Snapcraft crashed with an unhelpful error on invalid YAML. No fix or follow-up was provided. |