Make std.file.setTimes safe
fix Issue 13380 - Conflict with std.typecons.Identity and std.traits.Identity
Merge pull request #2470 from CyberShadow/fix13380

fix Issue 13380 - Conflict with std.typecons.Identity and std.traits.Identity
Merge pull request #2465 from tom-tan/safe-file-setTimes

Make std.file.setTimes safe