Commit a5718ba introduced some behaviour which is causing an internal compiler error for me, on code which compiled fine before this commit. I've done a git bisect on the the tree, and this is the first commit which crashes while compiling. My backtrace for the error is visible at https://gist.github.com/4070052

If needed, the project I was compiling can be found at https://github.com/am0d/rust-projects/tree/c17fbb8be158a0dbedba9ae5af825317610065a3/crawler