Success message containing link to crates.io after cargo publish

[blyxyas]

Problem

The output of cargo publish could be a little bit more helpful.

A lot of people want to check that their crate was published successfully after running cargo publish. It would be really handy if after a successful publishing process, Cargo printed the URL for checking your crate.

Proposed Solution

Maybe something like:

$ cargo publish
    [...]
    Updating crates.io index

Your crate was successfully published to crates.io! Check it at https://crates.io/crates/<CRATE>.

$

_{(Where <CRATE> gets replaced with the published crate)}

Notes

This takes advantage of the URL recognition that some terminal emulators have, and it's a nice touch for first-time publishers.

[0xPoe]

We might need to consider other registries. Because Cargo also supports publishing to different registries.

[blyxyas]

Guess I'll just do it myself
@rustbot claim