[INFO] crate k22f 0.1.0 is already in cache
[INFO] testing k22f-0.1.0 against beta-2020-06-03 for beta-1.45-1
[INFO] extracting crate k22f 0.1.0 into /workspace/builds/worker-3/source
[INFO] validating manifest of crates.io crate k22f 0.1.0 on toolchain beta-2020-06-03
[INFO] running `"/workspace/cargo-home/bin/cargo" "+beta-2020-06-03" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate k22f 0.1.0
[INFO] finished tweaking crates.io crate k22f 0.1.0
[INFO] tweaked toml for crates.io crate k22f 0.1.0 written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+beta-2020-06-03" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+beta-2020-06-03" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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=warn" "-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" "+beta-2020-06-03" "build" "--frozen"`
[INFO] [stdout] c684bb723ea355037ec980fc5ceb11fcf1e480baad59c1cbb8ad84dc6dec7d7d
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `"docker" "start" "-a" "c684bb723ea355037ec980fc5ceb11fcf1e480baad59c1cbb8ad84dc6dec7d7d"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling k22f v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] error: could not compile `k22f`.
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustc --crate-name k22f --edition=2018 src/lib.rs --error-format=json --json=diagnostic-rendered-ansi --crate-type lib --emit=dep-info,metadata,link -Cembed-bitcode=no -C debuginfo=2 -C metadata=a5bbff347fb4c53f -C extra-filename=-a5bbff347fb4c53f --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern bare_metal=/opt/rustwide/target/debug/deps/libbare_metal-463406e00d1ff5b9.rmeta --extern cortex_m=/opt/rustwide/target/debug/deps/libcortex_m-05b4a24a7a1e0382.rmeta --extern vcell=/opt/rustwide/target/debug/deps/libvcell-3f1afa121f930c78.rmeta --cap-lints=warn` (signal: 9, SIGKILL: kill)
[INFO] running `"docker" "inspect" "c684bb723ea355037ec980fc5ceb11fcf1e480baad59c1cbb8ad84dc6dec7d7d"`
[INFO] running `"docker" "rm" "-f" "c684bb723ea355037ec980fc5ceb11fcf1e480baad59c1cbb8ad84dc6dec7d7d"`
[INFO] [stdout] c684bb723ea355037ec980fc5ceb11fcf1e480baad59c1cbb8ad84dc6dec7d7d