[INFO] fetching crate bitboard 0.1.2...
[INFO] testing bitboard-0.1.2 against beta-2022-02-22 for beta-1.60-1
[INFO] extracting crate bitboard 0.1.2 into /workspace/builds/worker-2/source
[INFO] validating manifest of crates.io crate bitboard 0.1.2 on toolchain beta-2022-02-22
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-02-22" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate bitboard 0.1.2
[INFO] finished tweaking crates.io crate bitboard 0.1.2
[INFO] tweaked toml for crates.io crate bitboard 0.1.2 written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate crates.io crate bitboard 0.1.2 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-02-22" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: file found to be present in multiple build targets: /workspace/builds/worker-2/source/tests/nqueens.rs
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded typenum v1.9.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6c348a8dad7ffbe9dedc3dee0f111d6f2688c0a9571e800ab3a5bdc346630247
[INFO] running `Command { std: "docker" "start" "-a" "6c348a8dad7ffbe9dedc3dee0f111d6f2688c0a9571e800ab3a5bdc346630247", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6c348a8dad7ffbe9dedc3dee0f111d6f2688c0a9571e800ab3a5bdc346630247", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6c348a8dad7ffbe9dedc3dee0f111d6f2688c0a9571e800ab3a5bdc346630247", kill_on_drop: false }`
[INFO] [stdout] 6c348a8dad7ffbe9dedc3dee0f111d6f2688c0a9571e800ab3a5bdc346630247
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c9b03edf6a8a7530409f58f782c9abed778cdaf597377e83148d57cd9929f8a8
[INFO] running `Command { std: "docker" "start" "-a" "c9b03edf6a8a7530409f58f782c9abed778cdaf597377e83148d57cd9929f8a8", kill_on_drop: false }`
[INFO] [stderr] warning: file found to be present in multiple build targets: /opt/rustwide/workdir/tests/nqueens.rs
[INFO] [stderr]    Compiling typenum v1.9.0
[INFO] [stderr]    Compiling bitboard v0.1.2 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0432]: unresolved import `std::heap`
[INFO] [stdout]   --> src/lib.rs:18:10
[INFO] [stdout]    |
[INFO] [stdout] 18 | use std::heap::{Alloc, Layout, Heap};
[INFO] [stdout]    |          ^^^^ could not find `heap` in `std`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0432`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `bitboard` due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "c9b03edf6a8a7530409f58f782c9abed778cdaf597377e83148d57cd9929f8a8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c9b03edf6a8a7530409f58f782c9abed778cdaf597377e83148d57cd9929f8a8", kill_on_drop: false }`
[INFO] [stdout] c9b03edf6a8a7530409f58f782c9abed778cdaf597377e83148d57cd9929f8a8