[INFO] fetching crate async-core 0.3.1...
[INFO] checking async-core-0.3.1 against master#a3f76a26e045a760bb1163b7eab36872985242d5 for pr-130930
[INFO] extracting crate async-core 0.3.1 into /workspace/builds/worker-7-tc1/source
[INFO] validating manifest of crates.io crate async-core 0.3.1 on toolchain a3f76a26e045a760bb1163b7eab36872985242d5
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+a3f76a26e045a760bb1163b7eab36872985242d5" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate async-core 0.3.1
[INFO] finished tweaking crates.io crate async-core 0.3.1
[INFO] tweaked toml for crates.io crate async-core 0.3.1 written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] crate crates.io crate async-core 0.3.1 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" "+a3f76a26e045a760bb1163b7eab36872985242d5" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:6252d7ea7fb8caaf7af6d800c5fb250a9cd862b9a7f9508afb3c54fa7fe1102e" "/opt/rustwide/cargo-home/bin/cargo" "+a3f76a26e045a760bb1163b7eab36872985242d5" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 3b6dc8585d4204176644900d09e274755bba64a235d35e19a858448b38d2dbba
[INFO] running `Command { std: "docker" "start" "-a" "3b6dc8585d4204176644900d09e274755bba64a235d35e19a858448b38d2dbba", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3b6dc8585d4204176644900d09e274755bba64a235d35e19a858448b38d2dbba", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3b6dc8585d4204176644900d09e274755bba64a235d35e19a858448b38d2dbba", kill_on_drop: false }`
[INFO] [stdout] 3b6dc8585d4204176644900d09e274755bba64a235d35e19a858448b38d2dbba
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:6252d7ea7fb8caaf7af6d800c5fb250a9cd862b9a7f9508afb3c54fa7fe1102e" "/opt/rustwide/cargo-home/bin/cargo" "+a3f76a26e045a760bb1163b7eab36872985242d5" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2f1edc7bf90788e0541c9168cb4c1994cb6ccac892c17ea5eaf7315f927b5b06
[INFO] running `Command { std: "docker" "start" "-a" "2f1edc7bf90788e0541c9168cb4c1994cb6ccac892c17ea5eaf7315f927b5b06", kill_on_drop: false }`
[INFO] [stderr]     Checking async-core v0.3.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field `1` is never read
[INFO] [stdout]   --> src/runtime.rs:86:49
[INFO] [stdout]    |
[INFO] [stdout] 86 | pub struct OwnedRuntime<'a>(RuntimeWrapper<'a>, pub(crate) Box<dyn InternalRuntime + 'a>);
[INFO] [stdout]    |            ------------ field in this struct    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: consider removing this field
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `1` is never read
[INFO] [stdout]   --> src/runtime.rs:86:49
[INFO] [stdout]    |
[INFO] [stdout] 86 | pub struct OwnedRuntime<'a>(RuntimeWrapper<'a>, pub(crate) Box<dyn InternalRuntime + 'a>);
[INFO] [stdout]    |            ------------ field in this struct    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: consider removing this field
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.07s
[INFO] running `Command { std: "docker" "inspect" "2f1edc7bf90788e0541c9168cb4c1994cb6ccac892c17ea5eaf7315f927b5b06", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2f1edc7bf90788e0541c9168cb4c1994cb6ccac892c17ea5eaf7315f927b5b06", kill_on_drop: false }`
[INFO] [stdout] 2f1edc7bf90788e0541c9168cb4c1994cb6ccac892c17ea5eaf7315f927b5b06