I don’t know which change might have caused this error, but based on the stack trace I would start with torch/jit/_recursive.py, since concrete_type._create_methods_and_properties seems to be failing.
Based on the history of this file, there was this PR 3 on Sept. 14th which would fit into the first breaking nightly release.
This PR also introduced _create_methods_and_properties as seen here 2, so it would be my best guess.
Maybe @SplitInfinity could help out as the author of this PR.