[INFO] cloning repository https://github.com/A4-Tacks/cow2-rs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/A4-Tacks/cow2-rs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FA4-Tacks%2Fcow2-rs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FA4-Tacks%2Fcow2-rs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] f0b7857a21e3fb0e2140bf68c50f20bf731c977a
[INFO] checking A4-Tacks/cow2-rs against master#f8463896a9b36a04899c013bd8825a7fd29dd7a4 for pr-151920
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FA4-Tacks%2Fcow2-rs" "/workspace/builds/worker-6-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/A4-Tacks/cow2-rs
[INFO] finished tweaking git repo https://github.com/A4-Tacks/cow2-rs
[INFO] tweaked toml for git repo https://github.com/A4-Tacks/cow2-rs written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/A4-Tacks/cow2-rs on toolchain f8463896a9b36a04899c013bd8825a7fd29dd7a4
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+f8463896a9b36a04899c013bd8825a7fd29dd7a4" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/A4-Tacks/cow2-rs 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" "+f8463896a9b36a04899c013bd8825a7fd29dd7a4" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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@sha256:61361fe0aef631f17e9d025a70c5a647956f8c671dd02950a60ad3f5cc5526d7" "/opt/rustwide/cargo-home/bin/cargo" "+f8463896a9b36a04899c013bd8825a7fd29dd7a4" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 00ad3ea39a21d5a7516280e269377d7210fb4a91ec0c3f1a474ced08dda2f1bd
[INFO] running `Command { std: "docker" "start" "-a" "00ad3ea39a21d5a7516280e269377d7210fb4a91ec0c3f1a474ced08dda2f1bd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "00ad3ea39a21d5a7516280e269377d7210fb4a91ec0c3f1a474ced08dda2f1bd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "00ad3ea39a21d5a7516280e269377d7210fb4a91ec0c3f1a474ced08dda2f1bd", kill_on_drop: false }`
[INFO] [stdout] 00ad3ea39a21d5a7516280e269377d7210fb4a91ec0c3f1a474ced08dda2f1bd
[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@sha256:61361fe0aef631f17e9d025a70c5a647956f8c671dd02950a60ad3f5cc5526d7" "/opt/rustwide/cargo-home/bin/cargo" "+f8463896a9b36a04899c013bd8825a7fd29dd7a4" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f1ca0fd28a7b87be516bfacfc20edefb6034112f5afa3e5e95bc6d0990e17da8
[INFO] running `Command { std: "docker" "start" "-a" "f1ca0fd28a7b87be516bfacfc20edefb6034112f5afa3e5e95bc6d0990e17da8", kill_on_drop: false }`
[INFO] [stderr]     Checking cow2 v0.2.6 (/opt/rustwide/workdir)
[INFO] [stdout] warning: struct `FromCow` is never constructed
[INFO] [stdout]    --> src/like_impls.rs:435:12
[INFO] [stdout]     |
[INFO] [stdout] 435 |     struct FromCow;
[INFO] [stdout]     |            ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.34s
[INFO] running `Command { std: "docker" "inspect" "f1ca0fd28a7b87be516bfacfc20edefb6034112f5afa3e5e95bc6d0990e17da8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f1ca0fd28a7b87be516bfacfc20edefb6034112f5afa3e5e95bc6d0990e17da8", kill_on_drop: false }`
[INFO] [stdout] f1ca0fd28a7b87be516bfacfc20edefb6034112f5afa3e5e95bc6d0990e17da8
