[INFO] fetching crate field_names 0.1.1...
[INFO] checking field_names-0.1.1 against master#dfd7b8d03fb93d0e03147d28b3be6d93260fa94d for pr-87050
[INFO] extracting crate field_names 0.1.1 into /workspace/builds/worker-3/source
[INFO] validating manifest of crates.io crate field_names 0.1.1 on toolchain dfd7b8d03fb93d0e03147d28b3be6d93260fa94d
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+dfd7b8d03fb93d0e03147d28b3be6d93260fa94d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate field_names 0.1.1
[INFO] finished tweaking crates.io crate field_names 0.1.1
[INFO] tweaked toml for crates.io crate field_names 0.1.1 written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] crate crates.io crate field_names 0.1.1 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+dfd7b8d03fb93d0e03147d28b3be6d93260fa94d" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "+dfd7b8d03fb93d0e03147d28b3be6d93260fa94d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0b4faaf71e26169c654de9945b9d63f01c62aeebc349602ea2a4970da9e17952
[INFO] running `Command { std: "docker" "start" "-a" "0b4faaf71e26169c654de9945b9d63f01c62aeebc349602ea2a4970da9e17952", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0b4faaf71e26169c654de9945b9d63f01c62aeebc349602ea2a4970da9e17952", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0b4faaf71e26169c654de9945b9d63f01c62aeebc349602ea2a4970da9e17952", kill_on_drop: false }`
[INFO] [stdout] 0b4faaf71e26169c654de9945b9d63f01c62aeebc349602ea2a4970da9e17952
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "+dfd7b8d03fb93d0e03147d28b3be6d93260fa94d" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 34e71834a136cc3133a86d5990dce20c3da48a307adb60732eac323506254b6c
[INFO] running `Command { std: "docker" "start" "-a" "34e71834a136cc3133a86d5990dce20c3da48a307adb60732eac323506254b6c", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.24
[INFO] [stderr]    Compiling syn v1.0.58
[INFO] [stderr]    Compiling unicode-xid v0.2.1
[INFO] [stderr]     Checking quote v1.0.8
[INFO] [stderr]     Checking darling_core v0.12.0
[INFO] [stderr]    Compiling darling_macro v0.12.0
[INFO] [stderr]     Checking darling v0.12.0
[INFO] [stderr]    Compiling field_names v0.1.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 17.49s
[INFO] running `Command { std: "docker" "inspect" "34e71834a136cc3133a86d5990dce20c3da48a307adb60732eac323506254b6c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "34e71834a136cc3133a86d5990dce20c3da48a307adb60732eac323506254b6c", kill_on_drop: false }`
[INFO] [stdout] 34e71834a136cc3133a86d5990dce20c3da48a307adb60732eac323506254b6c