[INFO] fetching crate bolero 0.6.0...
[INFO] checking bolero-0.6.0 against master#90442458ac46b1d5eed752c316da25450f67285b for pr-81477
[INFO] extracting crate bolero 0.6.0 into /workspace/builds/worker-10/source
[INFO] validating manifest of crates.io crate bolero 0.6.0 on toolchain 90442458ac46b1d5eed752c316da25450f67285b
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+90442458ac46b1d5eed752c316da25450f67285b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate bolero 0.6.0
[INFO] finished tweaking crates.io crate bolero 0.6.0
[INFO] tweaked toml for crates.io crate bolero 0.6.0 written to /workspace/builds/worker-10/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+90442458ac46b1d5eed752c316da25450f67285b" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+90442458ac46b1d5eed752c316da25450f67285b" "fetch" "--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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+90442458ac46b1d5eed752c316da25450f67285b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 13095649c4543da6b475734a8f69e104d0a372f58f475f1ce43bf2e09b519fa9
[INFO] running `Command { std: "docker" "start" "-a" "13095649c4543da6b475734a8f69e104d0a372f58f475f1ce43bf2e09b519fa9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "13095649c4543da6b475734a8f69e104d0a372f58f475f1ce43bf2e09b519fa9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "13095649c4543da6b475734a8f69e104d0a372f58f475f1ce43bf2e09b519fa9", kill_on_drop: false }`
[INFO] [stdout] 13095649c4543da6b475734a8f69e104d0a372f58f475f1ce43bf2e09b519fa9
[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=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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+90442458ac46b1d5eed752c316da25450f67285b" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] fc79edaa6243ecc80fc4ec603db5b3fd757176f41d11311f07f1f5dc6afa4402
[INFO] running `Command { std: "docker" "start" "-a" "fc79edaa6243ecc80fc4ec603db5b3fd757176f41d11311f07f1f5dc6afa4402", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.97
[INFO] [stderr]    Compiling syn v1.0.73
[INFO] [stderr]    Compiling version_check v0.9.3
[INFO] [stderr]    Compiling getrandom v0.1.16
[INFO] [stderr]    Compiling memchr v2.4.0
[INFO] [stderr]    Compiling cc v1.0.68
[INFO] [stderr]    Compiling unicode-segmentation v1.8.0
[INFO] [stderr]     Checking gimli v0.24.0
[INFO] [stderr]     Checking strsim v0.8.0
[INFO] [stderr]     Checking ppv-lite86 v0.2.10
[INFO] [stderr]     Checking vec_map v0.8.2
[INFO] [stderr]     Checking ansi_term v0.11.0
[INFO] [stderr]     Checking adler v1.0.2
[INFO] [stderr]     Checking byteorder v1.4.3
[INFO] [stderr]     Checking either v1.6.1
[INFO] [stderr]     Checking rustc-demangle v0.1.20
[INFO] [stderr]     Checking pretty-hex v0.1.1
[INFO] [stderr]     Checking termcolor v1.1.2
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]    Compiling miniz_oxide v0.4.4
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling heck v0.3.3
[INFO] [stderr]     Checking object v0.25.3
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking clap v2.33.3
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]    Compiling backtrace v0.3.60
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]     Checking addr2line v0.15.2
[INFO] [stderr]    Compiling structopt-derive v0.4.15
[INFO] [stderr]    Compiling bolero-generator-derive v0.6.1
[INFO] [stderr]     Checking bolero-generator v0.6.0
[INFO] [stderr]     Checking structopt v0.3.22
[INFO] [stderr]     Checking libtest-mimic v0.2.0
[INFO] [stderr]     Checking bolero-engine v0.6.0
[INFO] [stderr]     Checking bolero v0.6.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 35.24s
[INFO] running `Command { std: "docker" "inspect" "fc79edaa6243ecc80fc4ec603db5b3fd757176f41d11311f07f1f5dc6afa4402", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fc79edaa6243ecc80fc4ec603db5b3fd757176f41d11311f07f1f5dc6afa4402", kill_on_drop: false }`
[INFO] [stdout] fc79edaa6243ecc80fc4ec603db5b3fd757176f41d11311f07f1f5dc6afa4402