[INFO] fetching crate wsb-rs 0.1.2...
[INFO] checking wsb-rs-0.1.2 against master#9748d87dc70a9a6725c5dbd76ce29d04752b4f90 for pr-144156
[INFO] extracting crate wsb-rs 0.1.2 into /workspace/builds/worker-4-tc1/source
[INFO] started tweaking crates.io crate wsb-rs 0.1.2
[INFO] finished tweaking crates.io crate wsb-rs 0.1.2
[INFO] tweaked toml for crates.io crate wsb-rs 0.1.2 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate wsb-rs 0.1.2 on toolchain 9748d87dc70a9a6725c5dbd76ce29d04752b4f90
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+9748d87dc70a9a6725c5dbd76ce29d04752b4f90" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate wsb-rs 0.1.2 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" "+9748d87dc70a9a6725c5dbd76ce29d04752b4f90" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:cf8efcab8866f2cf4285301c7418e2f4f2a9b088c91ba69c40d5b659f81557f7" "/opt/rustwide/cargo-home/bin/cargo" "+9748d87dc70a9a6725c5dbd76ce29d04752b4f90" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 558e93cde7b5a7d6844d3ce00a6746d3c4a576f249c254225caec1a076d1464d
[INFO] running `Command { std: "docker" "start" "-a" "558e93cde7b5a7d6844d3ce00a6746d3c4a576f249c254225caec1a076d1464d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "558e93cde7b5a7d6844d3ce00a6746d3c4a576f249c254225caec1a076d1464d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "558e93cde7b5a7d6844d3ce00a6746d3c4a576f249c254225caec1a076d1464d", kill_on_drop: false }`
[INFO] [stdout] 558e93cde7b5a7d6844d3ce00a6746d3c4a576f249c254225caec1a076d1464d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:cf8efcab8866f2cf4285301c7418e2f4f2a9b088c91ba69c40d5b659f81557f7" "/opt/rustwide/cargo-home/bin/cargo" "+9748d87dc70a9a6725c5dbd76ce29d04752b4f90" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 894adfdab35be49b4bd00cf6bbb46b0ed4da0d6d5b663cd06408e4e486a7f677
[INFO] running `Command { std: "docker" "start" "-a" "894adfdab35be49b4bd00cf6bbb46b0ed4da0d6d5b663cd06408e4e486a7f677", kill_on_drop: false }`
[INFO] [stderr]     Checking wsb-rs v0.1.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `cfg`
[INFO] [stdout]   --> src/config.rs:63:13
[INFO] [stdout]    |
[INFO] [stdout] 63 |         let cfg = Config::new(args).unwrap();
[INFO] [stdout]    |             ^^^ help: if this is intentional, prefix it with an underscore: `_cfg`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `cfg`
[INFO] [stdout]   --> src/config.rs:70:13
[INFO] [stdout]    |
[INFO] [stdout] 70 |         let cfg = Config::new(args).unwrap();
[INFO] [stdout]    |             ^^^ help: if this is intentional, prefix it with an underscore: `_cfg`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `cfg`
[INFO] [stdout]   --> src/config.rs:77:13
[INFO] [stdout]    |
[INFO] [stdout] 77 |         let cfg = Config::new(args).unwrap();
[INFO] [stdout]    |             ^^^ help: if this is intentional, prefix it with an underscore: `_cfg`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `cfg`
[INFO] [stdout]   --> src/config.rs:84:13
[INFO] [stdout]    |
[INFO] [stdout] 84 |         let cfg = Config::new(args).unwrap();
[INFO] [stdout]    |             ^^^ help: if this is intentional, prefix it with an underscore: `_cfg`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `cfg`
[INFO] [stdout]   --> src/config.rs:91:13
[INFO] [stdout]    |
[INFO] [stdout] 91 |         let cfg = Config::new(args).unwrap();
[INFO] [stdout]    |             ^^^ help: if this is intentional, prefix it with an underscore: `_cfg`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.30s
[INFO] running `Command { std: "docker" "inspect" "894adfdab35be49b4bd00cf6bbb46b0ed4da0d6d5b663cd06408e4e486a7f677", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "894adfdab35be49b4bd00cf6bbb46b0ed4da0d6d5b663cd06408e4e486a7f677", kill_on_drop: false }`
[INFO] [stdout] 894adfdab35be49b4bd00cf6bbb46b0ed4da0d6d5b663cd06408e4e486a7f677