buildx failed with: ERROR: failed to solve: process "/bin/sh -c cd /new && rm -rf .git && if /.ci/retrofit-worktree.sh worktree-pre /sage; then cd /sage && touch configure build/make/Makefile; else echo \"retrofit-worktree.sh failed, falling back to replacing /sage/src\"; rm -rf /sage/src; mv src /sage/src; cd /sage && ./bootstrap && ./config.status; fi; cd /sage && rm -rf /new .git" did not complete successfully: exit code: 1