Move the whole result handling of the assembler outside the context
manager; this includes the cleanup of the object in the error case
which would conflict with the ongoing write operation inside the
context manager and thus lead to a crash:
Traceback (most recent call last):
File "/usr/bin/osbuild", line 11, in <module>;
load_entry_point('osbuild==10', 'console_scripts', 'osbuild')()
File "/usr/lib/python3.7/site-packages/osbuild/__main__.py", line 99, in main
secrets=secrets
File "/usr/lib/python3.7/site-packages/osbuild/pipeline.py", line 362, in run
libdir)
File "/usr/lib/python3.7/site-packages/osbuild/pipeline.py", line 324, in assemble
output.cleanup()
File "/usr/lib/python3.7/site-packages/osbuild/objectstore.py", line 160, in cleanup
self._check_writer()
File "/usr/lib/python3.7/site-packages/osbuild/objectstore.py", line 178, in _check_writer
raise ValueError("Write operation is ongoing")
ValueError: Write operation is ongoing
c33e745252