fetching https://github.com/CyberShadow/phobos.git fix18848 (attempt: 1/3)
From https://github.com/CyberShadow/phobos
 * branch            fix18848   -> FETCH_HEAD

merging FETCH_HEAD
Auto-merging std/experimental/allocator/building_blocks/region.d
CONFLICT (content): Merge conflict in std/experimental/allocator/building_blocks/region.d
Auto-merging std/experimental/allocator/building_blocks/free_list.d
Automatic merge failed; fix conflicts and then commit the result.