[INFO] fetching crate xir-cranelift 0.1.4...
[INFO] testing xir-cranelift-0.1.4 against 1.90.0 for beta-1.91-3
[INFO] extracting crate xir-cranelift 0.1.4 into /workspace/builds/worker-0-tc1/source
[INFO] started tweaking crates.io crate xir-cranelift 0.1.4
[INFO] finished tweaking crates.io crate xir-cranelift 0.1.4
[INFO] tweaked toml for crates.io crate xir-cranelift 0.1.4 written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate xir-cranelift 0.1.4 on toolchain 1.90.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.90.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate xir-cranelift 0.1.4 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.90.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded redox_syscall v0.5.8
[INFO] [stderr]   Downloaded once_cell v1.20.2
[INFO] [stderr]   Downloaded xir v0.1.4
[INFO] [stderr]   Downloaded smallvec v1.13.2
[INFO] [stderr]   Downloaded scopeguard v1.2.0
[INFO] [stderr]   Downloaded lock_api v0.4.12
[INFO] [stderr]   Downloaded parking_lot_core v0.9.10
[INFO] [stderr]   Downloaded crossbeam-utils v0.8.21
[INFO] [stderr]   Downloaded bitflags v2.6.0
[INFO] [stderr]   Downloaded dashmap v6.1.0
[INFO] [stderr]   Downloaded hashbrown v0.14.5
[INFO] [stderr]   Downloaded libc v0.2.169
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 9e9c295af3c6dc8abb2f9bd0bf36110511bc4ce0d4a20cfb94e4ecb2e8a5f04a
[INFO] running `Command { std: "docker" "start" "-a" "9e9c295af3c6dc8abb2f9bd0bf36110511bc4ce0d4a20cfb94e4ecb2e8a5f04a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9e9c295af3c6dc8abb2f9bd0bf36110511bc4ce0d4a20cfb94e4ecb2e8a5f04a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9e9c295af3c6dc8abb2f9bd0bf36110511bc4ce0d4a20cfb94e4ecb2e8a5f04a", kill_on_drop: false }`
[INFO] [stdout] 9e9c295af3c6dc8abb2f9bd0bf36110511bc4ce0d4a20cfb94e4ecb2e8a5f04a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e44a237e07596d1e49e18014a909871e716e65d637e58890309b459a1c6a2de7
[INFO] running `Command { std: "docker" "start" "-a" "e44a237e07596d1e49e18014a909871e716e65d637e58890309b459a1c6a2de7", kill_on_drop: false }`
[INFO] [stderr]    Compiling bumpalo v3.19.0
[INFO] [stderr]    Compiling dashmap v6.1.0
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/bumpalo-3.19.0/src/lib.rs:5:40
[INFO] [stdout]   |
[INFO] [stdout] 5 | #![cfg_attr(feature = "allocator_api", feature(allocator_api))]
[INFO] [stdout]   |                                        ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `bumpalo` (lib) due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "e44a237e07596d1e49e18014a909871e716e65d637e58890309b459a1c6a2de7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e44a237e07596d1e49e18014a909871e716e65d637e58890309b459a1c6a2de7", kill_on_drop: false }`
[INFO] [stdout] e44a237e07596d1e49e18014a909871e716e65d637e58890309b459a1c6a2de7