[INFO] fetching crate metrics-util 0.4.0-alpha.6...
[INFO] checking metrics-util-0.4.0-alpha.6 against try#3e22d1f9053c0fc87629b3c6d5d9567856368e5d for pr-78714
[INFO] extracting crate metrics-util 0.4.0-alpha.6 into /workspace/builds/worker-13/source
[INFO] validating manifest of crates.io crate metrics-util 0.4.0-alpha.6 on toolchain 3e22d1f9053c0fc87629b3c6d5d9567856368e5d
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3e22d1f9053c0fc87629b3c6d5d9567856368e5d" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate metrics-util 0.4.0-alpha.6
[INFO] removed 0 missing tests
[INFO] finished tweaking crates.io crate metrics-util 0.4.0-alpha.6
[INFO] tweaked toml for crates.io crate metrics-util 0.4.0-alpha.6 written to /workspace/builds/worker-13/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3e22d1f9053c0fc87629b3c6d5d9567856368e5d" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3e22d1f9053c0fc87629b3c6d5d9567856368e5d" "fetch" "--locked" "--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 bolero-engine v0.5.2
[INFO] [stderr]   Downloaded bolero v0.5.2
[INFO] [stderr]   Downloaded bolero-generator-derive v0.5.2
[INFO] [stderr]   Downloaded metrics-macros v0.1.0-alpha.5
[INFO] [stderr]   Downloaded metrics v0.13.0-alpha.8
[INFO] [stderr]   Downloaded bolero-generator v0.5.2
[INFO] [stderr]   Downloaded bolero-honggfuzz v0.5.0
[INFO] [stderr]   Downloaded bolero-afl v0.5.0
[INFO] [stderr]   Downloaded bolero-libfuzzer v0.5.0
[INFO] [stderr]   Downloaded libtest-mimic v0.2.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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" "+3e22d1f9053c0fc87629b3c6d5d9567856368e5d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8dfe84213f199382a611250a00d62bf5820587d2915ad8821c4671ab790168d3
[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" "8dfe84213f199382a611250a00d62bf5820587d2915ad8821c4671ab790168d3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8dfe84213f199382a611250a00d62bf5820587d2915ad8821c4671ab790168d3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8dfe84213f199382a611250a00d62bf5820587d2915ad8821c4671ab790168d3", kill_on_drop: false }`
[INFO] [stdout] 8dfe84213f199382a611250a00d62bf5820587d2915ad8821c4671ab790168d3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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" "+3e22d1f9053c0fc87629b3c6d5d9567856368e5d" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2f71e1d3816ab1d3000e63abd070620bd782a502d4a9ee243efe0cc52b40c6ed
[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" "2f71e1d3816ab1d3000e63abd070620bd782a502d4a9ee243efe0cc52b40c6ed", kill_on_drop: false }`
[INFO] [stderr]    Compiling metrics v0.13.0-alpha.8
[INFO] [stderr]     Checking pretty-hex v0.1.1
[INFO] [stderr]     Checking atomic-shim v0.1.0
[INFO] [stderr]     Checking itertools v0.9.0
[INFO] [stderr]     Checking crossbeam-epoch v0.9.0
[INFO] [stderr]     Checking plotters v0.2.15
[INFO] [stderr]     Checking rand_distr v0.3.0
[INFO] [stderr]    Compiling bolero-generator-derive v0.5.2
[INFO] [stderr]    Compiling metrics-macros v0.1.0-alpha.5
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]     Checking crossbeam-deque v0.8.0
[INFO] [stderr]    Compiling structopt-derive v0.4.13
[INFO] [stderr]     Checking rayon-core v1.9.0
[INFO] [stderr]     Checking criterion-plot v0.4.3
[INFO] [stderr]     Checking bolero-generator v0.5.2
[INFO] [stderr]     Checking rayon v1.5.0
[INFO] [stderr]     Checking metrics-util v0.4.0-alpha.6 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking structopt v0.3.20
[INFO] [stderr]     Checking libtest-mimic v0.2.0
[INFO] [stderr]     Checking criterion v0.3.3
[INFO] [stderr]     Checking bolero-engine v0.5.2
[INFO] [stderr]     Checking bolero v0.5.2
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 30.38s
[INFO] running `Command { std: "docker" "inspect" "2f71e1d3816ab1d3000e63abd070620bd782a502d4a9ee243efe0cc52b40c6ed", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2f71e1d3816ab1d3000e63abd070620bd782a502d4a9ee243efe0cc52b40c6ed", kill_on_drop: false }`
[INFO] [stdout] 2f71e1d3816ab1d3000e63abd070620bd782a502d4a9ee243efe0cc52b40c6ed