[INFO] fetching crate bach 0.0.1...
[INFO] checking bach-0.0.1 against master#f5f33ec0e0455eefa72fc5567eb1280a4d5ee206 for pr-83312
[INFO] extracting crate bach 0.0.1 into /workspace/builds/worker-14/source
[INFO] validating manifest of crates.io crate bach 0.0.1 on toolchain f5f33ec0e0455eefa72fc5567eb1280a4d5ee206
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f5f33ec0e0455eefa72fc5567eb1280a4d5ee206" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate bach 0.0.1
[INFO] finished tweaking crates.io crate bach 0.0.1
[INFO] tweaked toml for crates.io crate bach 0.0.1 written to /workspace/builds/worker-14/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f5f33ec0e0455eefa72fc5567eb1280a4d5ee206" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f5f33ec0e0455eefa72fc5567eb1280a4d5ee206" "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 libtest-mimic v0.2.0
[INFO] [stderr]   Downloaded bolero-engine v0.6.0
[INFO] [stderr]   Downloaded nanorand v0.4.4
[INFO] [stderr]   Downloaded intrusive-collections v0.9.0
[INFO] [stderr]   Downloaded bolero v0.6.0
[INFO] [stderr]   Downloaded bolero-generator v0.6.0
[INFO] [stderr]   Downloaded bolero-afl v0.6.0
[INFO] [stderr]   Downloaded bolero-honggfuzz v0.6.0
[INFO] [stderr]   Downloaded bolero-libfuzzer v0.6.0
[INFO] [stderr]   Downloaded bolero-generator-derive v0.6.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+f5f33ec0e0455eefa72fc5567eb1280a4d5ee206" "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] 01c0f475a712997b98ba0870a4373dc21f002ab6422a4099ff644d7c39cd4433
[INFO] running `Command { std: "docker" "start" "-a" "01c0f475a712997b98ba0870a4373dc21f002ab6422a4099ff644d7c39cd4433", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "01c0f475a712997b98ba0870a4373dc21f002ab6422a4099ff644d7c39cd4433", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "01c0f475a712997b98ba0870a4373dc21f002ab6422a4099ff644d7c39cd4433", kill_on_drop: false }`
[INFO] [stdout] 01c0f475a712997b98ba0870a4373dc21f002ab6422a4099ff644d7c39cd4433
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+f5f33ec0e0455eefa72fc5567eb1280a4d5ee206" "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] 6a6b88989ecb889ef26ad0b352d31016ef161eebe397d79fd792fa016d73260f
[INFO] running `Command { std: "docker" "start" "-a" "6a6b88989ecb889ef26ad0b352d31016ef161eebe397d79fd792fa016d73260f", kill_on_drop: false }`
[INFO] [stderr]    Compiling getrandom v0.2.2
[INFO] [stderr]     Checking either v1.6.1
[INFO] [stderr]     Checking termcolor v1.1.2
[INFO] [stderr]     Checking pretty-hex v0.1.1
[INFO] [stderr]     Checking async-task v4.0.3
[INFO] [stderr]     Checking spinning_top v0.2.2
[INFO] [stderr]    Compiling syn v1.0.64
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking backtrace v0.3.56
[INFO] [stderr]     Checking intrusive-collections v0.9.0
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]     Checking clap v2.33.3
[INFO] [stderr]     Checking nanorand v0.4.4
[INFO] [stderr]     Checking flume v0.9.2
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling futures-macro v0.3.13
[INFO] [stderr]    Compiling bolero-generator-derive v0.6.1
[INFO] [stderr]    Compiling structopt-derive v0.4.14
[INFO] [stderr]    Compiling arr_macro_impl v0.1.3
[INFO] [stderr]     Checking bolero-generator v0.6.0
[INFO] [stderr]     Checking arr_macro v0.1.3
[INFO] [stderr]     Checking futures-util v0.3.13
[INFO] [stderr]     Checking structopt v0.3.21
[INFO] [stderr]     Checking libtest-mimic v0.2.0
[INFO] [stderr]     Checking futures-executor v0.3.13
[INFO] [stderr]     Checking futures v0.3.13
[INFO] [stderr]     Checking bach v0.0.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking bolero-engine v0.6.0
[INFO] [stderr]     Checking bolero v0.6.0
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 36.07s
[INFO] running `Command { std: "docker" "inspect" "6a6b88989ecb889ef26ad0b352d31016ef161eebe397d79fd792fa016d73260f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6a6b88989ecb889ef26ad0b352d31016ef161eebe397d79fd792fa016d73260f", kill_on_drop: false }`
[INFO] [stdout] 6a6b88989ecb889ef26ad0b352d31016ef161eebe397d79fd792fa016d73260f