Not working on nightly - proc-macro2 needs update | renovate not working?

[udondan]

Please complete the following tasks

• I have searched the discussions
• I have searched the open and rejected issues

Rust Version

1.72.0-nightly

Clap Version

4.3.10

Minimal reproducible code

None. Installation fails

Steps to reproduce the bug with the above code

rustup default nightly
cargo add clap
cargo build

Actual Behaviour

Failing due to incomaptible outdated dependency.

error[E0635]: unknown feature `proc_macro_span_shrink`
  --> /Users/user/.cargo/registry/src/index.crates.io-6f17d22bba15001f/proc-macro2-1.0.53/src/lib.rs:92:30
   |
92 |     feature(proc_macro_span, proc_macro_span_shrink)
   |                              ^^^^^^^^^^^^^^^^^^^^^^

Expected Behaviour

Working

Additional Context

proc-macro2 is a dependency of clap_derive:

cargo tree
...
│   ├── clap_derive v4.3.2 (proc-macro)
│   │   ├── heck v0.4.1
│   │   ├── proc-macro2 v1.0.53 (*)
...

The problem has been fixed in 1.0.60+ dtolnay/proc-macro2#398

The last dependabot PR for proc-macro2 had been closed without comment. I see you switched to renovate now but I wonder if it's working correctly, since I don't see any MR for that package.

Debug Output

No response

[epage]

As that version of proc-macro2 works fine on stable, we have no reason to require a higher minimum version of it.

If you are needing a newer proc-macro2 within your crate, you can update it via cargo update -p proc-macro2

[epage]

As this isn't a bug with clap and without further input, I'm going to go ahead and close this. Let us know if we need to re-evaluate this!