[INFO] fetching crate field_names 0.2.0...
[INFO] checking field_names-0.2.0 against master#ab869e094a907cc5d19b4080f22eccaf347f1f95 for pr-129604
[INFO] extracting crate field_names 0.2.0 into /workspace/builds/worker-2-tc1/source
[INFO] validating manifest of crates.io crate field_names 0.2.0 on toolchain ab869e094a907cc5d19b4080f22eccaf347f1f95
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate field_names 0.2.0
[INFO] finished tweaking crates.io crate field_names 0.2.0
[INFO] tweaked toml for crates.io crate field_names 0.2.0 written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] crate crates.io crate field_names 0.2.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "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-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a8e3a9809982de8239502f979eec204bd1840c56b5f8b0ceb123e3b3d0a633ea
[INFO] running `Command { std: "docker" "start" "-a" "a8e3a9809982de8239502f979eec204bd1840c56b5f8b0ceb123e3b3d0a633ea", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a8e3a9809982de8239502f979eec204bd1840c56b5f8b0ceb123e3b3d0a633ea", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a8e3a9809982de8239502f979eec204bd1840c56b5f8b0ceb123e3b3d0a633ea", kill_on_drop: false }`
[INFO] [stdout] a8e3a9809982de8239502f979eec204bd1840c56b5f8b0ceb123e3b3d0a633ea
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7237db634df1e7fb3d25222c86400e3b8197226e4bb3daf512814549f18a29f7
[INFO] running `Command { std: "docker" "start" "-a" "7237db634df1e7fb3d25222c86400e3b8197226e4bb3daf512814549f18a29f7", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.36
[INFO] [stderr]    Compiling syn v1.0.84
[INFO] [stderr]    Compiling unicode-xid v0.2.1
[INFO] [stderr]     Checking ident_case v1.0.1
[INFO] [stderr]     Checking quote v1.0.14
[INFO] [stderr]     Checking darling_core v0.13.1
[INFO] [stderr]    Compiling darling_macro v0.13.1
[INFO] [stderr]     Checking darling v0.13.1
[INFO] [stderr]    Compiling field_names v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 10.97s
[INFO] running `Command { std: "docker" "inspect" "7237db634df1e7fb3d25222c86400e3b8197226e4bb3daf512814549f18a29f7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7237db634df1e7fb3d25222c86400e3b8197226e4bb3daf512814549f18a29f7", kill_on_drop: false }`
[INFO] [stdout] 7237db634df1e7fb3d25222c86400e3b8197226e4bb3daf512814549f18a29f7