[INFO] fetching crate mk66f18 0.2.0...
[INFO] testing mk66f18-0.2.0 against 1.55.0 for beta-1.56-1
[INFO] extracting crate mk66f18 0.2.0 into /workspace/builds/worker-114/source
[INFO] validating manifest of crates.io crate mk66f18 0.2.0 on toolchain 1.55.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate mk66f18 0.2.0
[INFO] finished tweaking crates.io crate mk66f18 0.2.0
[INFO] tweaked toml for crates.io crate mk66f18 0.2.0 written to /workspace/builds/worker-114/source/Cargo.toml
[INFO] crate crates.io crate mk66f18 0.2.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded typenum v1.10.0
[INFO] [stderr]   Downloaded aligned v0.3.1
[INFO] [stderr]   Downloaded rand_core v0.2.1
[INFO] [stderr]   Downloaded cortex-m-rt-macros v0.1.5
[INFO] [stderr]   Downloaded as-slice v0.1.0
[INFO] [stderr]   Downloaded vcell v0.1.0
[INFO] [stderr]   Downloaded bare-metal v0.2.4
[INFO] [stderr]   Downloaded rand v0.5.5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-114/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-114/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8f833068c1289df6276a274f0402dbc05a8ab5d294e26d4c23a3b6114e7f3e2b
[INFO] running `Command { std: "docker" "start" "-a" "8f833068c1289df6276a274f0402dbc05a8ab5d294e26d4c23a3b6114e7f3e2b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8f833068c1289df6276a274f0402dbc05a8ab5d294e26d4c23a3b6114e7f3e2b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8f833068c1289df6276a274f0402dbc05a8ab5d294e26d4c23a3b6114e7f3e2b", kill_on_drop: false }`
[INFO] [stdout] 8f833068c1289df6276a274f0402dbc05a8ab5d294e26d4c23a3b6114e7f3e2b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-114/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-114/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] aff9efd0bea0e401f54cb15b0a2c452b2736bde9d43ac5cc1b8038a20bf8c88e
[INFO] running `Command { std: "docker" "start" "-a" "aff9efd0bea0e401f54cb15b0a2c452b2736bde9d43ac5cc1b8038a20bf8c88e", kill_on_drop: false }`
[INFO] [stderr]    Compiling typenum v1.10.0
[INFO] [stderr]    Compiling cortex-m v0.6.1
[INFO] [stderr]    Compiling stable_deref_trait v1.1.1
[INFO] [stderr]    Compiling vcell v0.1.0
[INFO] [stderr]    Compiling mk66f18 v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling bare-metal v0.2.4
[INFO] [stderr]    Compiling volatile-register v0.2.0
[INFO] [stderr]    Compiling generic-array v0.12.3
[INFO] [stderr]    Compiling as-slice v0.1.0
[INFO] [stderr]    Compiling aligned v0.3.1
[INFO] [stderr] error: could not compile `mk66f18`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustc --crate-name mk66f18 src/lib.rs --error-format=json --json=diagnostic-rendered-ansi --crate-type lib --emit=dep-info,metadata,link -C embed-bitcode=no -C debuginfo=2 -C metadata=9e9df841d1bc9c3c -C extra-filename=-9e9df841d1bc9c3c --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern bare_metal=/opt/rustwide/target/debug/deps/libbare_metal-0740832d713fd2a4.rmeta --extern cortex_m=/opt/rustwide/target/debug/deps/libcortex_m-2c38aad67e2f3f19.rmeta --extern vcell=/opt/rustwide/target/debug/deps/libvcell-93fff3feb813e5fa.rmeta --cap-lints=warn` (signal: 9, SIGKILL: kill)
[INFO] running `Command { std: "docker" "inspect" "aff9efd0bea0e401f54cb15b0a2c452b2736bde9d43ac5cc1b8038a20bf8c88e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "aff9efd0bea0e401f54cb15b0a2c452b2736bde9d43ac5cc1b8038a20bf8c88e", kill_on_drop: false }`
[INFO] [stdout] aff9efd0bea0e401f54cb15b0a2c452b2736bde9d43ac5cc1b8038a20bf8c88e