fix(ci): pre-install pinned Rust toolchain in publish workflow - #430
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The package build/test scripts spawn `cargo run` from parallel vitest
workers. On a fresh runner the pinned toolchain (1.96.1) is not installed
yet, so each concurrent cargo invocation triggers its own rustup install;
rustup is not concurrency-safe and the installs corrupt each other
("detected conflict: 'bin/cargo'"), failing the publish deterministically.
Install the rust-toolchain.toml pin serially before the build loop.
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tirumerla
approved these changes
Aug 24, 2026
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The package build/test scripts spawn
cargo runfrom parallel vitest workers. On a fresh runner the pinned toolchain (1.96.1) is not installed yet, so each concurrent cargo invocation triggers its own rustup install; rustup is not concurrency-safe and the installs corrupt each other ("detected conflict: 'bin/cargo'"), failing the publish deterministically.Install the rust-toolchain.toml pin serially before the build loop.
Seen as errors here: