[INFO] fetching crate fuzzcheck_mutators_derive 0.6.0...
[INFO] checking fuzzcheck_mutators_derive-0.6.0 against try#3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f for pr-87248
[INFO] extracting crate fuzzcheck_mutators_derive 0.6.0 into /workspace/builds/worker-12/source
[INFO] validating manifest of crates.io crate fuzzcheck_mutators_derive 0.6.0 on toolchain 3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate fuzzcheck_mutators_derive 0.6.0
[INFO] finished tweaking crates.io crate fuzzcheck_mutators_derive 0.6.0
[INFO] tweaked toml for crates.io crate fuzzcheck_mutators_derive 0.6.0 written to /workspace/builds/worker-12/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 30177924fe25739c101280814a6e68c0aaf8ec63d0d182590ade13c69c23fef4
[INFO] running `Command { std: "docker" "start" "-a" "30177924fe25739c101280814a6e68c0aaf8ec63d0d182590ade13c69c23fef4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "30177924fe25739c101280814a6e68c0aaf8ec63d0d182590ade13c69c23fef4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "30177924fe25739c101280814a6e68c0aaf8ec63d0d182590ade13c69c23fef4", kill_on_drop: false }`
[INFO] [stdout] 30177924fe25739c101280814a6e68c0aaf8ec63d0d182590ade13c69c23fef4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4df9dbec3ffdd0aa3c23ac441f086d8b4add01ddea42e135456ecc4f733a1039
[INFO] running `Command { std: "docker" "start" "-a" "4df9dbec3ffdd0aa3c23ac441f086d8b4add01ddea42e135456ecc4f733a1039", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.28
[INFO] [stderr]     Checking unicode-xid v0.2.2
[INFO] [stderr]     Checking decent-synquote-alternative v0.3.0
[INFO] [stderr]     Checking fuzzcheck_mutators_derive v0.6.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.90s
[INFO] running `Command { std: "docker" "inspect" "4df9dbec3ffdd0aa3c23ac441f086d8b4add01ddea42e135456ecc4f733a1039", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4df9dbec3ffdd0aa3c23ac441f086d8b4add01ddea42e135456ecc4f733a1039", kill_on_drop: false }`
[INFO] [stdout] 4df9dbec3ffdd0aa3c23ac441f086d8b4add01ddea42e135456ecc4f733a1039