[INFO] fetching crate ballista-core 0.11.0...
[INFO] checking ballista-core-0.11.0 against master#b0696a5160711c068cb1f01b7437db7990d15750 for pr-121848
[INFO] extracting crate ballista-core 0.11.0 into /workspace/builds/worker-0-tc1/source
[INFO] validating manifest of crates.io crate ballista-core 0.11.0 on toolchain b0696a5160711c068cb1f01b7437db7990d15750
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b0696a5160711c068cb1f01b7437db7990d15750" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate ballista-core 0.11.0
[INFO] finished tweaking crates.io crate ballista-core 0.11.0
[INFO] tweaked toml for crates.io crate ballista-core 0.11.0 written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b0696a5160711c068cb1f01b7437db7990d15750" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr] error: failed to select a version for `proc-macro2`.
[INFO] [stderr]     ... required by package `syn v2.0.31`
[INFO] [stderr]     ... which satisfies dependency `syn = "^2.0.31"` of package `zerocopy-derive v0.7.31`
[INFO] [stderr]     ... which satisfies dependency `zerocopy-derive = "=0.7.31"` of package `zerocopy v0.7.31`
[INFO] [stderr]     ... which satisfies dependency `zerocopy = "^0.7.0"` of package `ahash v0.8.4`
[INFO] [stderr]     ... which satisfies dependency `ahash = "^0.8"` of package `ballista-core v0.11.0 (/workspace/builds/worker-0-tc1/source)`
[INFO] [stderr] versions that meet the requirements `^1.0.62` are: 1.0.78, 1.0.77, 1.0.76, 1.0.75, 1.0.74, 1.0.73, 1.0.72, 1.0.71, 1.0.70, 1.0.69, 1.0.68, 1.0.67, 1.0.66, 1.0.65, 1.0.64, 1.0.63
[INFO] [stderr] 
[INFO] [stderr] all possible versions conflict with previously selected packages.
[INFO] [stderr] 
[INFO] [stderr]   previously selected package `proc-macro2 v1.0.50`
[INFO] [stderr]     ... which satisfies dependency `proc-macro2 = "=1.0.50"` of package `arrow-flight v32.0.0`
[INFO] [stderr]     ... which satisfies dependency `arrow-flight = "^32.0.0"` of package `ballista-core v0.11.0 (/workspace/builds/worker-0-tc1/source)`
[INFO] [stderr] 
[INFO] [stderr] failed to select a version for `proc-macro2` which could resolve this conflict
[ERROR] this task or one of its parent failed!
[ERROR] command failed: exit status: 101
[ERROR] note: run with `RUST_BACKTRACE=1` to display a backtrace.
