[INFO] fetching crate fuzzcheck_mutators_derive 0.12.0...
[INFO] checking fuzzcheck_mutators_derive-0.12.0 against master#506512391b1a75ae450d36c9420978402a91abcc for pr-125107-1
[INFO] extracting crate fuzzcheck_mutators_derive 0.12.0 into /workspace/builds/worker-6-tc1/source
[INFO] validating manifest of crates.io crate fuzzcheck_mutators_derive 0.12.0 on toolchain 506512391b1a75ae450d36c9420978402a91abcc
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+506512391b1a75ae450d36c9420978402a91abcc" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate fuzzcheck_mutators_derive 0.12.0
[INFO] finished tweaking crates.io crate fuzzcheck_mutators_derive 0.12.0
[INFO] tweaked toml for crates.io crate fuzzcheck_mutators_derive 0.12.0 written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+506512391b1a75ae450d36c9420978402a91abcc" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]      Locking 5 packages to latest compatible versions
[INFO] [stderr]       Adding syn v1.0.109 (latest: v2.0.66)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+506512391b1a75ae450d36c9420978402a91abcc" "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-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/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:beeedbb442662e57d416641ecc3200b38e573c25b057896194468d05594dd835" "/opt/rustwide/cargo-home/bin/cargo" "+506512391b1a75ae450d36c9420978402a91abcc" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 37783475ebc9f5ecb138582c82a1404d7947a627964f3431ad903ab21d19551e
[INFO] running `Command { std: "docker" "start" "-a" "37783475ebc9f5ecb138582c82a1404d7947a627964f3431ad903ab21d19551e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "37783475ebc9f5ecb138582c82a1404d7947a627964f3431ad903ab21d19551e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "37783475ebc9f5ecb138582c82a1404d7947a627964f3431ad903ab21d19551e", kill_on_drop: false }`
[INFO] [stdout] 37783475ebc9f5ecb138582c82a1404d7947a627964f3431ad903ab21d19551e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/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" "RUSTDOCFLAGS=--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:beeedbb442662e57d416641ecc3200b38e573c25b057896194468d05594dd835" "/opt/rustwide/cargo-home/bin/cargo" "+506512391b1a75ae450d36c9420978402a91abcc" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2e6e3806cd9fc0e38bf3408cf63474e5c451c7db3427f27472126183d2e88316
[INFO] running `Command { std: "docker" "start" "-a" "2e6e3806cd9fc0e38bf3408cf63474e5c451c7db3427f27472126183d2e88316", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.84
[INFO] [stderr]     Checking unicode-ident v1.0.12
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]     Checking quote v1.0.36
[INFO] [stderr]     Checking fuzzcheck_mutators_derive v0.12.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.86s
[INFO] running `Command { std: "docker" "inspect" "2e6e3806cd9fc0e38bf3408cf63474e5c451c7db3427f27472126183d2e88316", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2e6e3806cd9fc0e38bf3408cf63474e5c451c7db3427f27472126183d2e88316", kill_on_drop: false }`
[INFO] [stdout] 2e6e3806cd9fc0e38bf3408cf63474e5c451c7db3427f27472126183d2e88316