Failed check command cargo check --all didn't succeed.

[Animeshz]

The command cargo check --all externally works, but says: Bad check for 1.55.0 and fails with the above message.

  eww on  current [$⇡] via  v14.17.2 via 🦀 v1.56.0-nightly took 1m40s >>> cargo check --all
    Checking eww v0.2.0 (/home/animesh/Projects/eww/crates/eww)
    Finished dev [unoptimized + debuginfo] target(s) in 10.64s

  eww on  current [$⇡] via  v14.17.2 via 🦀 v1.56.0-nightly took 10s >>> cargo msrv
Determining the Minimum Supported Rust Version (MSRV) for toolchain x86_64-unknown-linux-gnu
Using check command cargo check --all
   Done Bad check for 1.55.0      █░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░ 00:00:35
   Failed check command cargo check --all didn't succeed
Unable to find a Minimum Supported Rust Version (MSRV).

If you think this result is erroneous, please run: `cargo check --all` manually.

If the above does succeed, or you think cargo-msrv errored in another way, please feel free to
report the issue at: https://github.com/foresterre/cargo-msrv/issues

Thank you in advance!

[foresterre]

Thanks for the report!

[foresterre]

I didn't have a proper look yet, but I saw that eww by default seems to rely on nightly releases which we don't support yet.

Specifically, the rust-toolchain file in the eww repo contains 'nightly-2021-08-10'. I didn't check whether the crates themselves actually opt in to nightly features yet.

[foresterre]

Regardless, if that's indeed the issue, the error message should be improved 😄