Failed to compile taplo-cli 0.8.1 due to proc-macro2

[v0y4g3r]

What happend

Failed to install/compile latest taplo-cli (v0.8.1) with rust toolchain nightly-2023-08-07.

$ rustc -V
rustc 1.73.0-nightly (f3623871c 2023-08-06)

$ cargo install taplo-cli --version ^0.8.1 --locked
cargo install taplo-cli --version ^0.8.1 --locked
    Updating crates.io index
  Downloaded taplo-cli v0.8.1
  Downloaded 1 crate (28.9 KB) in 0.96s
  Installing taplo-cli v0.8.1
    Updating crates.io index
warning: package `crossbeam-channel v0.5.6` in Cargo.lock is yanked in registry `crates-io`, consider running without --locked
    Updating crates.io index
  Downloaded taplo v0.12.1
  Downloaded lsp-async-stub v0.6.1
  Downloaded taplo-common v0.4.1
  Downloaded 3 crates (79.4 KB) in 1.15s
   Compiling autocfg v1.1.0
   Compiling proc-macro2 v1.0.47
   Compiling quote v1.0.21
   Compiling unicode-ident v1.0.5
   Compiling syn v1.0.103
   Compiling libc v0.2.136
   Compiling cfg-if v1.0.0
   Compiling version_check v0.9.4
   Compiling serde_derive v1.0.147
   Compiling once_cell v1.18.0
   Compiling memchr v2.5.0
   Compiling serde v1.0.147
   Compiling scopeguard v1.1.0
   Compiling crossbeam-utils v0.8.12
   Compiling cc v1.0.73
   Compiling rayon-core v1.9.3
   Compiling log v0.4.17
   Compiling pin-project-lite v0.2.9
   Compiling itoa v1.0.4
   Compiling either v1.8.0
   Compiling lazy_static v1.4.0
   Compiling futures-core v0.3.25
   Compiling parking_lot_core v0.9.4
   Compiling ryu v1.0.11
   Compiling smallvec v1.10.0
   Compiling regex-syntax v0.6.27
   Compiling ahash v0.7.6
   Compiling tracing-core v0.1.30
   Compiling memoffset v0.6.5
   Compiling crossbeam-epoch v0.9.11
   Compiling rayon v1.5.3
error[E0635]: unknown feature `proc_macro_span_shrink`
  --> /home/lei/.cargo/registry/src/index.crates.io-6f17d22bba15001f/proc-macro2-1.0.47/src/lib.rs:92:30
   |
92 |     feature(proc_macro_span, proc_macro_span_shrink)
   |                              ^^^^^^^^^^^^^^^^^^^^^^

   Compiling indexmap v1.9.1
   Compiling lock_api v0.4.9
   Compiling slab v0.4.7
For more information about this error, try `rustc --explain E0635`.
   Compiling num-traits v0.2.15
error: could not compile `proc-macro2` (lib) due to previous error
warning: build failed, waiting for other jobs to finish...
error: failed to compile `taplo-cli v0.8.1`, intermediate artifacts can be found at `/tmp/cargo-installbTm7YO`.
To reuse those artifacts with a future compilation, set the environment variable `CARGO_TARGET_DIR` to that path.

How to reproduce

# change rust toolchain
rustup override set nightly-2023-08-07

# try install taplo-cli
cargo install taplo-cli --version ^0.8.1 --locked

Related issue

rust-lang/rust#113152

Solutions

Manually specify proc-macro2 version to some newer ones like 1.0.66 would solve this.

[ia0]

Thanks for the bug report! This is already fixed in #449 and blocked on #473 to be released. Closing as duplicate.