error[E0635]: unknown feature `proc_macro_span_shrink`

[yochananmarqos]

   Compiling slab v0.4.8
error[E0635]: unknown feature `proc_macro_span_shrink`
  --> /build/celeste/src/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/proc-macro2-1.0.59/src/lib.rs:92:30
   |
92 |     feature(proc_macro_span, proc_macro_span_shrink)
   |                              ^^^^^^^^^^^^^^^^^^^^^^

   Compiling log v0.4.18
   Compiling value-bag v1.4.0
   Compiling event-listener v2.5.3
   Compiling semver v1.0.17
   Compiling typenum v1.16.0
For more information about this error, try `rustc --explain E0635`.
error: could not compile `proc-macro2` (lib) due to previous error
warning: build failed, waiting for other jobs to finish...
error: Recipe `build` failed on line 4 with exit code 101

See https://github.com/rust-lang/rust/issues/113152

[hwittenborn]

I would've sworn I updated all the dependencies to the latest versions when I saw that myself a while ago, I guess I didn't. I'll check everything locally again real quick.

[hwittenborn]

Fixed in v0.5.4. I'll leave this open until the MPR package gets updated, as that'll be affected too.