rename-dependency doesn't perform hyphen/underscore translation

[kazcw]

When renaming a dependency in Cargo.toml (rust-lang/cargo#5422),

This works: not_a = { path = "../a", package = "a" }
This doesn't: not-a = { path = "../a", package = "a" }; attempting to import the crate results in can't find crate for not_a

It's never necessary to use hyphens in a rename, but supporting it would be less surprising.

[ehuss]

This should be fixed in the latest nightly (fixed via rust-lang/cargo#6140).

[dwijnand]

I can confirm this is fixed, tested using the 2018-11-09 nightly I have installed.