[INFO] crate bitboard 0.1.2 is already in cache
[INFO] testing bitboard-0.1.2 against master#28742a1146f10a4f09369baad027a464acb7a766 for pr-71274
[INFO] extracting crate bitboard 0.1.2 into /workspace/builds/worker-5/source
[INFO] validating manifest of crates.io crate bitboard 0.1.2 on toolchain 28742a1146f10a4f09369baad027a464acb7a766
[INFO] running `"/workspace/cargo-home/bin/cargo" "+28742a1146f10a4f09369baad027a464acb7a766" "read-manifest" "--manifest-path" "Cargo.toml"`
[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-5/source/Cargo.toml
[INFO] crate crates.io crate bitboard 0.1.2 already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+28742a1146f10a4f09369baad027a464acb7a766" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr] warning: file found to be present in multiple build targets: /workspace/builds/worker-5/source/tests/nqueens.rs
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+28742a1146f10a4f09369baad027a464acb7a766" "build" "--frozen"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 63fb5fa146af27c480caa7e34028481355d0e2f7aee88805bb2a5cb6b84b2270
[INFO] running `"docker" "start" "-a" "63fb5fa146af27c480caa7e34028481355d0e2f7aee88805bb2a5cb6b84b2270"`
[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] [stderr] error[E0432]: unresolved import `std::heap`
[INFO] [stderr]   --> src/lib.rs:18:10
[INFO] [stderr]    |
[INFO] [stderr] 18 | use std::heap::{Alloc, Layout, Heap};
[INFO] [stderr]    |          ^^^^ could not find `heap` in `std`
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0432`.
[INFO] [stderr] error: could not compile `bitboard`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "63fb5fa146af27c480caa7e34028481355d0e2f7aee88805bb2a5cb6b84b2270"`
[INFO] running `"docker" "rm" "-f" "63fb5fa146af27c480caa7e34028481355d0e2f7aee88805bb2a5cb6b84b2270"`
[INFO] [stdout] 63fb5fa146af27c480caa7e34028481355d0e2f7aee88805bb2a5cb6b84b2270