[INFO] fetching crate vprytz-chess 0.1.0...
[INFO] building vprytz-chess-0.1.0 against try#4987e9d4227139400384ab59296ffee3b0fb1183 for pr-146237-2
[INFO] extracting crate vprytz-chess 0.1.0 into /workspace/builds/worker-4-tc2/source
[INFO] started tweaking crates.io crate vprytz-chess 0.1.0
[INFO] finished tweaking crates.io crate vprytz-chess 0.1.0
[INFO] tweaked toml for crates.io crate vprytz-chess 0.1.0 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate vprytz-chess 0.1.0 on toolchain 4987e9d4227139400384ab59296ffee3b0fb1183
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4987e9d4227139400384ab59296ffee3b0fb1183" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4987e9d4227139400384ab59296ffee3b0fb1183" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4987e9d4227139400384ab59296ffee3b0fb1183" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+4987e9d4227139400384ab59296ffee3b0fb1183" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8221f3c2046f57de8acc8ed47d3a21d3c38dc864fd9c76c747c4a540b3bf67ea
[INFO] running `Command { std: "docker" "start" "-a" "8221f3c2046f57de8acc8ed47d3a21d3c38dc864fd9c76c747c4a540b3bf67ea", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8221f3c2046f57de8acc8ed47d3a21d3c38dc864fd9c76c747c4a540b3bf67ea", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8221f3c2046f57de8acc8ed47d3a21d3c38dc864fd9c76c747c4a540b3bf67ea", kill_on_drop: false }`
[INFO] [stdout] 8221f3c2046f57de8acc8ed47d3a21d3c38dc864fd9c76c747c4a540b3bf67ea
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+4987e9d4227139400384ab59296ffee3b0fb1183" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5139c29f9885b19ca1ead3fa7605e5ee498f55ef1e22b4169c1fecb91971d9ef
[INFO] running `Command { std: "docker" "start" "-a" "5139c29f9885b19ca1ead3fa7605e5ee498f55ef1e22b4169c1fecb91971d9ef", kill_on_drop: false }`
[INFO] [stderr]    Compiling vprytz-chess v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `piece`
[INFO] [stdout]    --> src/lib.rs:272:37
[INFO] [stdout]     |
[INFO] [stdout] 272 |     pub fn set_promotion(&mut self, piece: String) -> () {
[INFO] [stdout]     |                                     ^^^^^ help: if this is intentional, prefix it with an underscore: `_piece`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.36s
[INFO] running `Command { std: "docker" "inspect" "5139c29f9885b19ca1ead3fa7605e5ee498f55ef1e22b4169c1fecb91971d9ef", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5139c29f9885b19ca1ead3fa7605e5ee498f55ef1e22b4169c1fecb91971d9ef", kill_on_drop: false }`
[INFO] [stdout] 5139c29f9885b19ca1ead3fa7605e5ee498f55ef1e22b4169c1fecb91971d9ef
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+4987e9d4227139400384ab59296ffee3b0fb1183" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] db0cd8dec3b7050a1db326634ec8cfe2300b5f7bd28bb26b91823ce770d3d39c
[INFO] running `Command { std: "docker" "start" "-a" "db0cd8dec3b7050a1db326634ec8cfe2300b5f7bd28bb26b91823ce770d3d39c", kill_on_drop: false }`
[INFO] [stdout] warning: unused variable: `piece`
[INFO] [stdout]    --> src/lib.rs:272:37
[INFO] [stdout]     |
[INFO] [stdout] 272 |     pub fn set_promotion(&mut self, piece: String) -> () {
[INFO] [stdout]     |                                     ^^^^^ help: if this is intentional, prefix it with an underscore: `_piece`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling vprytz-chess v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `piece`
[INFO] [stdout]    --> src/lib.rs:272:37
[INFO] [stdout]     |
[INFO] [stdout] 272 |     pub fn set_promotion(&mut self, piece: String) -> () {
[INFO] [stdout]     |                                     ^^^^^ help: if this is intentional, prefix it with an underscore: `_piece`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.63s
[INFO] running `Command { std: "docker" "inspect" "db0cd8dec3b7050a1db326634ec8cfe2300b5f7bd28bb26b91823ce770d3d39c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "db0cd8dec3b7050a1db326634ec8cfe2300b5f7bd28bb26b91823ce770d3d39c", kill_on_drop: false }`
[INFO] [stdout] db0cd8dec3b7050a1db326634ec8cfe2300b5f7bd28bb26b91823ce770d3d39c