[INFO] crate fuzzcheck_mutators 0.3.0 is already in cache
[INFO] checking fuzzcheck_mutators-0.3.0 against master#1557fb031b272b4c5bfcc7de5df7eddc7b36a584 for pr-73166
[INFO] extracting crate fuzzcheck_mutators 0.3.0 into /workspace/builds/worker-2/source
[INFO] validating manifest of crates.io crate fuzzcheck_mutators 0.3.0 on toolchain 1557fb031b272b4c5bfcc7de5df7eddc7b36a584
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1557fb031b272b4c5bfcc7de5df7eddc7b36a584" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate fuzzcheck_mutators 0.3.0
[INFO] finished tweaking crates.io crate fuzzcheck_mutators 0.3.0
[INFO] tweaked toml for crates.io crate fuzzcheck_mutators 0.3.0 written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate crates.io crate fuzzcheck_mutators 0.3.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1557fb031b272b4c5bfcc7de5df7eddc7b36a584" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:d9fbb4e2287ab3795bdefaf705efb7541a8875c13bce71e067d6b01dc5ed759b" "/opt/rustwide/cargo-home/bin/cargo" "+1557fb031b272b4c5bfcc7de5df7eddc7b36a584" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 119537d2c02e9a541039df2bf38628abc869babfdeb94bb5f0245cac7bd60a76
[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" "119537d2c02e9a541039df2bf38628abc869babfdeb94bb5f0245cac7bd60a76", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "119537d2c02e9a541039df2bf38628abc869babfdeb94bb5f0245cac7bd60a76", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "119537d2c02e9a541039df2bf38628abc869babfdeb94bb5f0245cac7bd60a76", kill_on_drop: false }`
[INFO] [stdout] 119537d2c02e9a541039df2bf38628abc869babfdeb94bb5f0245cac7bd60a76
[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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:d9fbb4e2287ab3795bdefaf705efb7541a8875c13bce71e067d6b01dc5ed759b" "/opt/rustwide/cargo-home/bin/cargo" "+1557fb031b272b4c5bfcc7de5df7eddc7b36a584" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6deb05d8748af3a9cdf9b89a25154ffb5ce927aa5ff8cafa42979d141d8b4212
[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" "6deb05d8748af3a9cdf9b89a25154ffb5ce927aa5ff8cafa42979d141d8b4212", kill_on_drop: false }`
[INFO] [stderr]     Checking fuzzcheck_traits v0.3.0
[INFO] [stderr]    Compiling fuzzcheck_mutators_derive v0.3.0
[INFO] [stderr]     Checking fuzzcheck_mutators v0.3.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused `#[macro_use]` import
[INFO] [stdout]  --> examples/derive_struct.rs:3:1
[INFO] [stdout]   |
[INFO] [stdout] 3 | #[macro_use]
[INFO] [stdout]   | ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.75s
[INFO] running `Command { std: "docker" "inspect" "6deb05d8748af3a9cdf9b89a25154ffb5ce927aa5ff8cafa42979d141d8b4212", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6deb05d8748af3a9cdf9b89a25154ffb5ce927aa5ff8cafa42979d141d8b4212", kill_on_drop: false }`
[INFO] [stdout] 6deb05d8748af3a9cdf9b89a25154ffb5ce927aa5ff8cafa42979d141d8b4212