Change `match self` to `match *self` to avoid adding `&` to all patterns in a match.
Change `match self` to `match *self` to avoid adding `&` to all patterns in a match.

https://rust-lang-nursery.github.io/rust-clippy/v0.0.186/index.html#match_ref_pats

stoklund/cretonne,sunfishcode/cretonne,stoklund/cretonne,sunfishcode/cretonne,stoklund/cretonne,sunfishcode/cretonne