fetching https://github.com/nordlow/dmd.git use-is-matchers (attempt: 1/3)
From https://github.com/nordlow/dmd
 * branch            use-is-matchers -> FETCH_HEAD

merging FETCH_HEAD
warning: inexact rename detection was skipped due to too many files.
warning: you may want to set your merge.renamelimit variable to at least 4436 and retry the command.
CONFLICT (modify/delete): src/dmd/optimize.d deleted in HEAD and modified in 6f9fb49ad792084d5875232d543baae312f1fa7a. Version 6f9fb49ad792084d5875232d543baae312f1fa7a of src/dmd/optimize.d left in tree.
Automatic merge failed; fix conflicts and then commit the result.