[INFO] fetching crate k66 0.0.1...
[INFO] testing k66-0.0.1 against 1.49.0 for beta-1.50-1
[INFO] extracting crate k66 0.0.1 into /workspace/builds/worker-10/source
[INFO] validating manifest of crates.io crate k66 0.0.1 on toolchain 1.49.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate k66 0.0.1
[INFO] finished tweaking crates.io crate k66 0.0.1
[INFO] tweaked toml for crates.io crate k66 0.0.1 written to /workspace/builds/worker-10/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 92a5b01dc5a2a19cd29ca80d427b8884974461b61d95786156bbbeae7b1af36d
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "92a5b01dc5a2a19cd29ca80d427b8884974461b61d95786156bbbeae7b1af36d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "92a5b01dc5a2a19cd29ca80d427b8884974461b61d95786156bbbeae7b1af36d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "92a5b01dc5a2a19cd29ca80d427b8884974461b61d95786156bbbeae7b1af36d", kill_on_drop: false }`
[INFO] [stdout] 92a5b01dc5a2a19cd29ca80d427b8884974461b61d95786156bbbeae7b1af36d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4f7decf0cf39e78aac2b52245f288a0e2e09149fb7f33e1ee9a096ec904e48d8
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "4f7decf0cf39e78aac2b52245f288a0e2e09149fb7f33e1ee9a096ec904e48d8", kill_on_drop: false }`
[INFO] [stderr]    Compiling cortex-m v0.6.4
[INFO] [stderr]    Compiling stable_deref_trait v1.2.0
[INFO] [stderr]    Compiling vcell v0.1.3
[INFO] [stderr]    Compiling bitfield v0.13.2
[INFO] [stderr]    Compiling cortex-m v0.5.10
[INFO] [stderr]    Compiling aligned v0.2.0
[INFO] [stderr]    Compiling k66 v0.0.1 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling bare-metal v0.2.5
[INFO] [stderr]    Compiling generic-array v0.13.2
[INFO] [stderr]    Compiling volatile-register v0.2.0
[INFO] [stderr]    Compiling as-slice v0.1.4
[INFO] [stderr]    Compiling aligned v0.3.4
[INFO] [stderr] error: could not compile `k66`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustc --crate-name k66 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=ccc4018d72329766 -C extra-filename=-ccc4018d72329766 --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern bare_metal=/opt/rustwide/target/debug/deps/libbare_metal-e6165ef488b8b881.rmeta --extern cortex_m=/opt/rustwide/target/debug/deps/libcortex_m-7f8741a1eef88090.rmeta --extern vcell=/opt/rustwide/target/debug/deps/libvcell-e329b83ade808ca6.rmeta --cap-lints=warn` (signal: 9, SIGKILL: kill)
[INFO] running `Command { std: "docker" "inspect" "4f7decf0cf39e78aac2b52245f288a0e2e09149fb7f33e1ee9a096ec904e48d8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4f7decf0cf39e78aac2b52245f288a0e2e09149fb7f33e1ee9a096ec904e48d8", kill_on_drop: false }`
[INFO] [stdout] 4f7decf0cf39e78aac2b52245f288a0e2e09149fb7f33e1ee9a096ec904e48d8