Bug reproduce instructions --------------------------- 1. git clone --branch=bug-20190410-guvcview https://github.com/Lin-Buo-Ren/snapcraft-bug-poc.git 2. cd snapcraft-bug-poc 3. snapcraft stage guvcview Traceback ---------- ``` Traceback (most recent call last):   File "/snap/snapcraft/2722/bin/snapcraft", line 11, in <module>     load_entry_point('snapcraft==3.3', 'console_scripts', 'snapcraft')()   File "/snap/snapcraft/2722/lib/python3.5/site-packages/snapcraft/cli/__main__.py", line 81, in run     run_snapcraft(prog_name="snapcraft")   File "/snap/snapcraft/2722/lib/python3.5/site-packages/click/core.py", line 722, in __call__     return self.main(*args, **kwargs)   File "/snap/snapcraft/2722/lib/python3.5/site-packages/click/core.py", line 697, in main     rv = self.invoke(ctx)   File "/snap/snapcraft/2722/lib/python3.5/site-packages/click/core.py", line 1066, in invoke     return _process_result(sub_ctx.command.invoke(sub_ctx))   File "/snap/snapcraft/2722/lib/python3.5/site-packages/click/core.py", line 895, in invoke     return ctx.invoke(self.callback, **ctx.params)   File "/snap/snapcraft/2722/lib/python3.5/site-packages/click/core.py", line 535, in invoke     return callback(*args, **kwargs)   File "/snap/snapcraft/2722/lib/python3.5/site-packages/snapcraft/cli/lifecycle.py", line 251, in stage     _execute(steps.STAGE, parts, **kwargs)   File "/snap/snapcraft/2722/lib/python3.5/site-packages/snapcraft/cli/lifecycle.py", line 126, in _execute     lifecycle.execute(step, project_config, parts)   File "/snap/snapcraft/2722/lib/python3.5/site-packages/snapcraft/internal/lifecycle/_runner.py", line 94, in execute     executor.run(step, part_names)   File "/snap/snapcraft/2722/lib/python3.5/site-packages/snapcraft/internal/lifecycle/_runner.py", line 148, in run     self._handle_step(part_names, part, step, current_step, cli_config)   File "/snap/snapcraft/2722/lib/python3.5/site-packages/snapcraft/internal/lifecycle/_runner.py", line 162, in _handle_step     getattr(self, "_run_{}".format(current_step.name))(part)   File "/snap/snapcraft/2722/lib/python3.5/site-packages/snapcraft/internal/lifecycle/_runner.py", line 226, in _run_stage     self._run_step(step=steps.STAGE, part=part, progress="Staging")   File "/snap/snapcraft/2722/lib/python3.5/site-packages/snapcraft/internal/lifecycle/_runner.py", line 281, in _run_step     getattr(part, step.name)()   File "/snap/snapcraft/2722/lib/python3.5/site-packages/snapcraft/internal/pluginhandler/__init__.py", line 722, in stage     self._runner.stage()   File "/snap/snapcraft/2722/lib/python3.5/site-packages/snapcraft/internal/pluginhandler/_runner.py", line 84, in stage     "override-stage", self._override_stage_scriptlet, self._stagedir   File "/snap/snapcraft/2722/lib/python3.5/site-packages/snapcraft/internal/pluginhandler/_runner.py", line 137, in _run_scriptlet     scriptlet_name, function_call.strip()   File "/snap/snapcraft/2722/lib/python3.5/site-packages/snapcraft/internal/pluginhandler/_runner.py", line 193, in _handle_builtin_function     function(**function_args)   File "/snap/snapcraft/2722/lib/python3.5/site-packages/snapcraft/internal/pluginhandler/__init__.py", line 744, in _do_stage     fixup_func=fixup_func,   File "/snap/snapcraft/2722/lib/python3.5/site-packages/snapcraft/internal/pluginhandler/__init__.py", line 1097, in _migrate_files     os.remove(dst) IsADirectoryError: [Errno 21] Is a directory: '/root/stage/usr/bin/X11' ``` Snapcraft ---------- Host: version 3.3+git17.g1b29058 from edge channel Build environment: 3.3 Additional info --------------- The `usr/bin/X11` symlink is shipped by x11-commons package, and for whatever reason points to `.`