> Exception exceptions.KeyboardInterrupt in 'bzrlib._dirstate_helpers_pyx.ProcessEntryC._update_current_block' ignored
seems to indicate something is calling PyErr_WriteUnraisable, and there are not so many callers of that. If someone can reproduce this problem under a C debugger with an exception set there it may be obvious. Grepping for its callers I can't see one that seems likely to raise this message.
That message
> Exception exceptions. KeyboardInterru pt in 'bzrlib. _dirstate_ helpers_ pyx.ProcessEntr yC._update_ current_ block' ignored
seems to indicate something is calling PyErr_WriteUnra isable, and there are not so many callers of that. If someone can reproduce this problem under a C debugger with an exception set there it may be obvious. Grepping for its callers I can't see one that seems likely to raise this message.