Rust build from source failing on macOS 27

[Mark E Anderson]

Anyone seen something like this building Rust from source? I've never done it before, and I'm trying on macOS 27, so it could just be that. Gonna give it a try on 26 building from source and see if it happens again. I've never built it from source and the process is something else. If it's just on 27 should I hold off filing the bug ticket release, or file it now? 

—Mark
Macports Wiki Page <https://trac.macports.org/wiki/mark> | GitHub <https://github.com/markemer> | Blog <https://emer.net>

   Compiling clap v4.5.20
error[E0463]: can't find crate for `clap_derive`
  --> /opt/local/var/macports/build/rust-e37df430/work/rustc-1.96.0-src/vendor/clap-4.5.20/src/lib.rs:91:9
   |
91 | pub use clap_derive::{self, Args, Parser, Subcommand, ValueEnum};
   |         ^^^^^^^^^^^ can't find crate

For more information about this error, try `rustc --explain E0463`.
error: could not compile `clap` (lib) due to 1 previous error
warning: build failed, waiting for other jobs to finish...
failed to run: /opt/local/var/macports/build/rust-e37df430/work/cargo-1.95.0-aarch64-apple-darwin/cargo/bin/cargo build --jobs=default --manifest-path /opt/local/var/macports/build/rust-e37df430/work/rustc-1.96.0-src/src/bootstrap/Cargo.toml -Zroot-dir=/opt/local/var/macports/build/rust-e37df430/work/rustc-1.96.0-src -Zwarnings --offline
Build completed unsuccessfully in 0:00:08
make: *** [all] Error 1
make: Leaving directory `/opt/local/var/macports/build/rust-e37df430/work/rustc-1.96.0-src'
Command failed:  cd "/opt/local/var/macports/build/rust-e37df430/work/rustc-1.96.0-src" && /usr/bin/make -j10 -w all BOOTSTRAP_ARGS="-j10"
Exit code: 2
Error: Failed to build rust: command execution failed



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