On build.snapcraft.io, today I’m getting an unexpected error during the prime stage. Things worked fine yesterday, and I don’t think this is due to changes in the code that I’m packaging (my snapcraft.yaml has remained the same)
A full log example is here: https://launchpad.net/~build.snapcraft.io/+snap/908277a77436b2b858d32d6cd0bc859a/+build/798502
the key part being this bit at the end:
Priming ammp-edge
Sorry, an error occurred in Snapcraft:
join() argument must be str or bytes, not 'NoneType'
Traceback (most recent call last):
File "/snap/snapcraft/3914/bin/snapcraft", line 11, in <module>
load_entry_point('snapcraft==3.9.1', 'console_scripts', 'snapcraft')()
File "/snap/snapcraft/3914/lib/python3.6/site-packages/click/core.py", line 764, in __call__
return self.main(*args, **kwargs)
File "/snap/snapcraft/3914/lib/python3.6/site-packages/click/core.py", line 717, in main
rv = self.invoke(ctx)
File "/snap/snapcraft/3914/lib/python3.6/site-packages/click/core.py", line 1114, in invoke
return Command.invoke(self, ctx)
File "/snap/snapcraft/3914/lib/python3.6/site-packages/click/core.py", line 956, in invoke
return ctx.invoke(self.callback, **ctx.params)
File "/snap/snapcraft/3914/lib/python3.6/site-packages/click/core.py", line 555, in invoke
return callback(*args, **kwargs)
File "/snap/snapcraft/3914/lib/python3.6/site-packages/click/decorators.py", line 17, in new_func
return f(get_current_context(), *args, **kwargs)
File "/snap/snapcraft/3914/lib/python3.6/site-packages/snapcraft/cli/_runner.py", line 109, in run
snap_command.invoke(ctx)
File "/snap/snapcraft/3914/lib/python3.6/site-packages/snapcraft/cli/_command.py", line 87, in invoke
return super().invoke(ctx)
File "/snap/snapcraft/3914/lib/python3.6/site-packages/click/core.py", line 956, in invoke
return ctx.invoke(self.callback, **ctx.params)
File "/snap/snapcraft/3914/lib/python3.6/site-packages/click/core.py", line 555, in invoke
return callback(*args, **kwargs)
File "/snap/snapcraft/3914/lib/python3.6/site-packages/snapcraft/cli/lifecycle.py", line 261, in snap
_execute(steps.PRIME, parts=[], pack_project=True, output=output, **kwargs)
File "/snap/snapcraft/3914/lib/python3.6/site-packages/snapcraft/cli/lifecycle.py", line 66, in _execute
lifecycle.execute(step, project_config, parts)
File "/snap/snapcraft/3914/lib/python3.6/site-packages/snapcraft/internal/lifecycle/_runner.py", line 123, in execute
executor.run(step, part_names)
File "/snap/snapcraft/3914/lib/python3.6/site-packages/snapcraft/internal/lifecycle/_runner.py", line 177, in run
self._handle_step(part_names, part, step, current_step, cli_config)
File "/snap/snapcraft/3914/lib/python3.6/site-packages/snapcraft/internal/lifecycle/_runner.py", line 191, in _handle_step
getattr(self, "_run_{}".format(current_step.name))(part)
File "/snap/snapcraft/3914/lib/python3.6/site-packages/snapcraft/internal/lifecycle/_runner.py", line 266, in _run_prime
self._run_step(step=steps.PRIME, part=part, progress="Priming")
File "/snap/snapcraft/3914/lib/python3.6/site-packages/snapcraft/internal/lifecycle/_runner.py", line 310, in _run_step
getattr(part, step.name)()
File "/snap/snapcraft/3914/lib/python3.6/site-packages/snapcraft/internal/pluginhandler/__init__.py", line 798, in prime
self._do_runner_step(steps.PRIME)
File "/snap/snapcraft/3914/lib/python3.6/site-packages/snapcraft/internal/pluginhandler/__init__.py", line 245, in _do_runner_step
return getattr(self._runner, "{}".format(step.name))()
File "/snap/snapcraft/3914/lib/python3.6/site-packages/snapcraft/internal/pluginhandler/_runner.py", line 91, in prime
"override-prime", self._override_prime_scriptlet, self._primedir
File "/snap/snapcraft/3914/lib/python3.6/site-packages/snapcraft/internal/pluginhandler/_runner.py", line 137, in _run_scriptlet
scriptlet_name, function_call.strip()
File "/snap/snapcraft/3914/lib/python3.6/site-packages/snapcraft/internal/pluginhandler/_runner.py", line 193, in _handle_builtin_function
function(**function_args)
File "/snap/snapcraft/3914/lib/python3.6/site-packages/snapcraft/internal/pluginhandler/__init__.py", line 810, in _do_prime
dependency_paths = self._handle_elf(snap_files)
File "/snap/snapcraft/3914/lib/python3.6/site-packages/snapcraft/internal/pluginhandler/__init__.py", line 825, in _handle_elf
content_dirs = self._project_options._get_provider_content_dirs()
File "/snap/snapcraft/3914/lib/python3.6/site-packages/snapcraft/project/_project.py", line 87, in _get_provider_content_dirs
return self._snap_meta.get_provider_content_directories()
File "/snap/snapcraft/3914/lib/python3.6/site-packages/snapcraft/internal/meta/snap.py", line 116, in get_provider_content_directories
provider_path = common.get_installed_snap_path(provider)
File "/snap/snapcraft/3914/lib/python3.6/site-packages/snapcraft/internal/common.py", line 92, in get_installed_snap_path
return os.path.join(os.path.sep, "snap", snap_name, "current")
File "/snap/snapcraft/3914/usr/lib/python3.6/posixpath.py", line 94, in join
genericpath._check_arg_types('join', a, *p)
File "/snap/snapcraft/3914/usr/lib/python3.6/genericpath.py", line 149, in _check_arg_types
(funcname, s.__class__.__name__)) from None
TypeError: join() argument must be str or bytes, not 'NoneType'
You can find the traceback in file '/tmp/tmpyjzhk0gy/trace.txt'.
Build failed
Traceback (most recent call last):
File "/usr/lib/python2.7/dist-packages/lpbuildd/target/build_snap.py", line 266, in run
self.build()
File "/usr/lib/python2.7/dist-packages/lpbuildd/target/build_snap.py", line 255, in build
env=env)
File "/usr/lib/python2.7/dist-packages/lpbuildd/target/build_snap.py", line 102, in run_build_command
return self.backend.run(args, env=full_env, **kwargs)
File "/usr/lib/python2.7/dist-packages/lpbuildd/target/lxd.py", line 527, in run
subprocess.check_call(cmd, **kwargs)
File "/usr/lib/python2.7/subprocess.py", line 541, in check_call
raise CalledProcessError(retcode, cmd)
CalledProcessError: Command '['lxc', 'exec', 'lp-bionic-amd64', '--env', 'LANG=C.UTF-8', '--env', 'SHELL=/bin/sh', '--env', 'SNAPCRAFT_BUILD_INFO=1', '--env', 'SNAPCRAFT_IMAGE_INFO={"build-request-id": "lp-53846713", "build-request-timestamp": "2020-01-15T21:15:47Z", "build_url": "https://launchpad.net/~build.snapcraft.io/+snap/908277a77436b2b858d32d6cd0bc859a/+build/798502"}', '--env', 'SNAPCRAFT_BUILD_ENVIRONMENT=host', '--env', 'http_proxy=http://10.10.10.1:8222/', '--env', 'https_proxy=http://10.10.10.1:8222/', '--env', 'GIT_PROXY_COMMAND=/usr/local/bin/snap-git-proxy', '--', '/bin/sh', '-c', 'cd /build/ammp-edge && linux64 snapcraft']' returned non-zero exit status 1
A similar error is mentioned in this recent bug report: https://bugs.launchpad.net/snapcraft/+bug/1857019 - but this is reported to occur under different circumstances, i.e. when no base is specified in snapcraft.yaml. In my snapcraft.yaml (https://github.com/ammpio/ammp-edge/blob/master/snap/snapcraft.yaml) I’ve had base: core18 specified all the way along. Prompted by the bug report, I figured I’d try adding build-base: core or build-base: core18 just in case it makes a difference, but neither did.
Any ideas what’s going on? Did something change in the snapcraft version/behavior on build.snapcraft.io?
