[INFO] fetching crate mrkl 0.0.4...
[INFO] checking mrkl-0.0.4 against master#c919f490bbcd2b29b74016101f7ec71aaa24bdbb for pr-79073
[INFO] extracting crate mrkl 0.0.4 into /workspace/builds/worker-2/source
[INFO] validating manifest of crates.io crate mrkl 0.0.4 on toolchain c919f490bbcd2b29b74016101f7ec71aaa24bdbb
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+c919f490bbcd2b29b74016101f7ec71aaa24bdbb" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate mrkl 0.0.4
[INFO] finished tweaking crates.io crate mrkl 0.0.4
[INFO] tweaked toml for crates.io crate mrkl 0.0.4 written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+c919f490bbcd2b29b74016101f7ec71aaa24bdbb" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+c919f490bbcd2b29b74016101f7ec71aaa24bdbb" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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" "rustops/crates-build-env@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+c919f490bbcd2b29b74016101f7ec71aaa24bdbb" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 79bf0ccf70c797c1d3dbb0ad2afcf1df8e4d64b30778212d08b559f4d2187fb4
[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" "79bf0ccf70c797c1d3dbb0ad2afcf1df8e4d64b30778212d08b559f4d2187fb4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "79bf0ccf70c797c1d3dbb0ad2afcf1df8e4d64b30778212d08b559f4d2187fb4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "79bf0ccf70c797c1d3dbb0ad2afcf1df8e4d64b30778212d08b559f4d2187fb4", kill_on_drop: false }`
[INFO] [stdout] 79bf0ccf70c797c1d3dbb0ad2afcf1df8e4d64b30778212d08b559f4d2187fb4
[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=forbid" "-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@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+c919f490bbcd2b29b74016101f7ec71aaa24bdbb" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d4192dc5a9ce9831b74faf0ca47309626ce6996fde28eb00e262123b77adf765
[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" "d4192dc5a9ce9831b74faf0ca47309626ce6996fde28eb00e262123b77adf765", kill_on_drop: false }`
[INFO] [stderr]    Compiling const_fn v0.4.3
[INFO] [stderr]    Compiling typenum v1.12.0
[INFO] [stderr]    Compiling libc v0.2.80
[INFO] [stderr]    Compiling rayon-core v1.9.0
[INFO] [stderr]    Compiling serde_derive v1.0.117
[INFO] [stderr]     Checking byte-tools v0.3.1
[INFO] [stderr]     Checking either v1.6.1
[INFO] [stderr]     Checking fake-simd v0.1.2
[INFO] [stderr]     Checking opaque-debug v0.2.3
[INFO] [stderr]    Compiling crossbeam-utils v0.8.0
[INFO] [stderr]    Compiling memoffset v0.5.6
[INFO] [stderr]    Compiling rayon v1.5.0
[INFO] [stderr]     Checking serde_json v1.0.59
[INFO] [stderr]    Compiling syn v1.0.50
[INFO] [stderr]     Checking block-padding v0.1.5
[INFO] [stderr]     Checking num_cpus v1.13.0
[INFO] [stderr]     Checking crossbeam-epoch v0.9.0
[INFO] [stderr]     Checking crossbeam-channel v0.5.0
[INFO] [stderr]     Checking crossbeam-deque v0.8.0
[INFO] [stderr]     Checking generic-array v0.12.3
[INFO] [stderr]     Checking digest v0.8.1
[INFO] [stderr]     Checking block-buffer v0.7.3
[INFO] [stderr]     Checking digest-hash v0.3.0
[INFO] [stderr]     Checking sha2 v0.8.2
[INFO] [stderr]     Checking mrkl v0.0.4 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 29.25s
[INFO] running `Command { std: "docker" "inspect" "d4192dc5a9ce9831b74faf0ca47309626ce6996fde28eb00e262123b77adf765", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d4192dc5a9ce9831b74faf0ca47309626ce6996fde28eb00e262123b77adf765", kill_on_drop: false }`
[INFO] [stdout] d4192dc5a9ce9831b74faf0ca47309626ce6996fde28eb00e262123b77adf765