semver-parser sub-dependency not compatible with current MSRV without lockfile

[niklasmohrin]

bat cannot be built with Rust 1.40 without passing the --locked flag. This is because the semver dependency has semver-parser as a dependency and this crate started using a new feature in a minor version patch (v0.10.1) that is available only from Rust 1.44 onwards. The lockfile on the master branch has semvar-parser locked at v0.10.0 which still compiles. To reproduce, run

$ rm Cargo.lock
$ rustup default 1.40
$ cargo b

To eliminate this issue, the version of the sub dependency can be held in place as done here or the MSRV of bat could be lifted to 1.44.

I encountered this problem first in this PR where I added a new dependency and wanted to ship a fresh lockfile with the addition, but the MSRV CI runner failed due to this.

This is all assuming you see this as an issue in the first place, after all the build instructions tell you to use the --locked flag, as sharkdp pointed out under the aforementioned PR.

[steveklabnik]

I've pushed a new patch version of semver-parser so this should just be fixed, I believe.

[niklasmohrin]

Awesome, thank you very much! This fixes the probem without any changes needed here.

@sharkdp Should the Cargo.toml be updated to use version v0.10.2 and a new lockfile be generated still?

[sharkdp]

@sharkdp Should the Cargo.toml be updated to use version v0.10.2 and a new lockfile be generated still?

That's probably a good idea - thanks!