Hint at package name with dash/underscore mismatch

[jethrogb]

Say you have this in your Cargo.toml

[dependencies]
rustc_serialize = "*"

You'll get this error:

error: no matching package named `rustc_serialize` found (required by `my_crate`)
location searched: registry https://github.com/rust-lang/crates.io-index
version required: *

It would be nice if cargo instead said something like “did you mean rustc-serialize”?

[alexcrichton]

Agreed! Would be an awesome improvement to have.

[kellda]

It seems fixed now:

error: no matching package named `rustc_serialize` found
location searched: registry `https://github.com/rust-lang/crates.io-index`
perhaps you meant: rustc-serialize
required by package `my_crate v0.1.0 (/path/to/my_crate)`

[Eh2406]

Yes. Thanks!