[INFO] fetching crate sacrifice 0.3.0-alpha.3...
[INFO] building sacrifice-0.3.0-alpha.3 against master#c7f6aa2869acdbf014d094c6e427e554e160b6db for pr-146237-2
[INFO] extracting crate sacrifice 0.3.0-alpha.3 into /workspace/builds/worker-5-tc1/source
[INFO] started tweaking crates.io crate sacrifice 0.3.0-alpha.3
[INFO] finished tweaking crates.io crate sacrifice 0.3.0-alpha.3
[INFO] tweaked toml for crates.io crate sacrifice 0.3.0-alpha.3 written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate sacrifice 0.3.0-alpha.3 on toolchain c7f6aa2869acdbf014d094c6e427e554e160b6db
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate sacrifice 0.3.0-alpha.3 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" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded btoi v0.4.3
[INFO] [stderr]   Downloaded circular v0.3.0
[INFO] [stderr]   Downloaded pgn-reader v0.25.0
[INFO] [stderr]   Downloaded shakmaty v0.26.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 91078507e3b5d13ebabb51852fddeedb629961ec90ccc1691a71fa5ea04e9e10
[INFO] running `Command { std: "docker" "start" "-a" "91078507e3b5d13ebabb51852fddeedb629961ec90ccc1691a71fa5ea04e9e10", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "91078507e3b5d13ebabb51852fddeedb629961ec90ccc1691a71fa5ea04e9e10", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "91078507e3b5d13ebabb51852fddeedb629961ec90ccc1691a71fa5ea04e9e10", kill_on_drop: false }`
[INFO] [stdout] 91078507e3b5d13ebabb51852fddeedb629961ec90ccc1691a71fa5ea04e9e10
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c64362eb0de928ce00e0b440e2caad3eea2c904b4a150ac66132081c6508326c
[INFO] running `Command { std: "docker" "start" "-a" "c64362eb0de928ce00e0b440e2caad3eea2c904b4a150ac66132081c6508326c", kill_on_drop: false }`
[INFO] [stderr]    Compiling num-traits v0.2.17
[INFO] [stderr]    Compiling arrayvec v0.7.4
[INFO] [stderr]    Compiling circular v0.3.0
[INFO] [stderr]    Compiling btoi v0.4.3
[INFO] [stderr]    Compiling shakmaty v0.26.0
[INFO] [stderr]    Compiling pgn-reader v0.25.0
[INFO] [stderr]    Compiling sacrifice v0.3.0-alpha.3 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `new_node`
[INFO] [stdout]   --> src/bin/example.rs:32:9
[INFO] [stdout]    |
[INFO] [stdout] 32 |     let new_node = root.new_variation(queens_pawn); // 1. d4 node
[INFO] [stdout]    |         ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_new_node`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]  --> src/bin/example.rs:2:9
[INFO] [stdout]   |
[INFO] [stdout] 2 |     let mut game = sacrifice::read_pgn(
[INFO] [stdout]   |         ----^^^^
[INFO] [stdout]   |         |
[INFO] [stdout]   |         help: remove this `mut`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 13.99s
[INFO] running `Command { std: "docker" "inspect" "c64362eb0de928ce00e0b440e2caad3eea2c904b4a150ac66132081c6508326c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c64362eb0de928ce00e0b440e2caad3eea2c904b4a150ac66132081c6508326c", kill_on_drop: false }`
[INFO] [stdout] c64362eb0de928ce00e0b440e2caad3eea2c904b4a150ac66132081c6508326c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0459bcc2653338d280fa7625b31ed6451f6a84760742d8f3af2e0bfb7ded9158
[INFO] running `Command { std: "docker" "start" "-a" "0459bcc2653338d280fa7625b31ed6451f6a84760742d8f3af2e0bfb7ded9158", kill_on_drop: false }`
[INFO] [stderr]    Compiling sacrifice v0.3.0-alpha.3 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `new_node`
[INFO] [stdout]   --> src/bin/example.rs:32:9
[INFO] [stdout]    |
[INFO] [stdout] 32 |     let new_node = root.new_variation(queens_pawn); // 1. d4 node
[INFO] [stdout]    |         ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_new_node`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]  --> src/bin/example.rs:2:9
[INFO] [stdout]   |
[INFO] [stdout] 2 |     let mut game = sacrifice::read_pgn(
[INFO] [stdout]   |         ----^^^^
[INFO] [stdout]   |         |
[INFO] [stdout]   |         help: remove this `mut`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 1.03s
[INFO] running `Command { std: "docker" "inspect" "0459bcc2653338d280fa7625b31ed6451f6a84760742d8f3af2e0bfb7ded9158", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0459bcc2653338d280fa7625b31ed6451f6a84760742d8f3af2e0bfb7ded9158", kill_on_drop: false }`
[INFO] [stdout] 0459bcc2653338d280fa7625b31ed6451f6a84760742d8f3af2e0bfb7ded9158