[INFO] fetching crate fuzzcheck_mutators_derive 0.6.0...
[INFO] checking fuzzcheck_mutators_derive-0.6.0 against try#3d9fdbff4f377de96b3a51174e7a64086bee9a5c for pr-81477
[INFO] extracting crate fuzzcheck_mutators_derive 0.6.0 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate fuzzcheck_mutators_derive 0.6.0 on toolchain 3d9fdbff4f377de96b3a51174e7a64086bee9a5c
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3d9fdbff4f377de96b3a51174e7a64086bee9a5c" "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-6/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3d9fdbff4f377de96b3a51174e7a64086bee9a5c" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3d9fdbff4f377de96b3a51174e7a64086bee9a5c" "fetch" "--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-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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:ea7d7bff36b2ba8ce4de8bba1d2dea90376bc481f1a945a913994a8c492e40c1" "/opt/rustwide/cargo-home/bin/cargo" "+3d9fdbff4f377de96b3a51174e7a64086bee9a5c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 5dd3e46e22e4adae8d0d070d4bf806f900cf30d370f3c555ca5f98947b18d4c4
[INFO] running `Command { std: "docker" "start" "-a" "5dd3e46e22e4adae8d0d070d4bf806f900cf30d370f3c555ca5f98947b18d4c4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5dd3e46e22e4adae8d0d070d4bf806f900cf30d370f3c555ca5f98947b18d4c4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5dd3e46e22e4adae8d0d070d4bf806f900cf30d370f3c555ca5f98947b18d4c4", kill_on_drop: false }`
[INFO] [stdout] 5dd3e46e22e4adae8d0d070d4bf806f900cf30d370f3c555ca5f98947b18d4c4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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:ea7d7bff36b2ba8ce4de8bba1d2dea90376bc481f1a945a913994a8c492e40c1" "/opt/rustwide/cargo-home/bin/cargo" "+3d9fdbff4f377de96b3a51174e7a64086bee9a5c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 880fe80f4d5e8063c386338351116d7bc07ae9077ec955cf3d1cb6f6e725c315
[INFO] running `Command { std: "docker" "start" "-a" "880fe80f4d5e8063c386338351116d7bc07ae9077ec955cf3d1cb6f6e725c315", kill_on_drop: false }`
[INFO] [stderr]     Checking unicode-xid v0.2.2
[INFO] [stderr]     Checking proc-macro2 v1.0.27
[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 1.37s
[INFO] running `Command { std: "docker" "inspect" "880fe80f4d5e8063c386338351116d7bc07ae9077ec955cf3d1cb6f6e725c315", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "880fe80f4d5e8063c386338351116d7bc07ae9077ec955cf3d1cb6f6e725c315", kill_on_drop: false }`
[INFO] [stdout] 880fe80f4d5e8063c386338351116d7bc07ae9077ec955cf3d1cb6f6e725c315