bors 1eb4c8f1b4 Auto merge of #5181 - alexcrichton:selectively-write-dep-info, r=matklad
Don't rewrite dep-info files if they don't change

Similar to how we treat lock files, read the contents, compare, and if they're
the same don't actually write the file.

Closes #5172
2018-03-14 22:17:18 +00:00
..