[INFO] cloning repository https://github.com/tvallotton/chess
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/tvallotton/chess" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftvallotton%2Fchess", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftvallotton%2Fchess'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 98b01208e95173388cf4f781cc83bb414bb3bf55
[INFO] checking tvallotton/chess against master#4eb62535fc12dd1a63fd43a4173e224e79313c4d for pr-158816
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftvallotton%2Fchess" "/workspace/builds/worker-5-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/tvallotton/chess
[INFO] finished tweaking git repo https://github.com/tvallotton/chess
[INFO] tweaked toml for git repo https://github.com/tvallotton/chess written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/tvallotton/chess on toolchain 4eb62535fc12dd1a63fd43a4173e224e79313c4d
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4eb62535fc12dd1a63fd43a4173e224e79313c4d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/tvallotton/chess 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" "+4eb62535fc12dd1a63fd43a4173e224e79313c4d" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded itertools v0.10.3
[INFO] [stderr]   Downloaded quote v1.0.18
[INFO] [stderr]   Downloaded unicode-segmentation v1.9.0
[INFO] [stderr]   Downloaded libc v0.2.124
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,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" "-m" "1610612736" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:3d5ced03c013a94a2f102a4510f48a6e9184255caf5fd8244f58017bde7f5210" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] 75f7db822acf90d50627b23446461e07abcf2b09698bee02162ca3793727e274
[INFO] running `Command { std: "docker" "start" "75f7db822acf90d50627b23446461e07abcf2b09698bee02162ca3793727e274", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "75f7db822acf90d50627b23446461e07abcf2b09698bee02162ca3793727e274", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-w" "/opt/rustwide/workdir" "--user" "0:0" "75f7db822acf90d50627b23446461e07abcf2b09698bee02162ca3793727e274" "/opt/rustwide/cargo-home/bin/cargo" "+4eb62535fc12dd1a63fd43a4173e224e79313c4d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "75f7db822acf90d50627b23446461e07abcf2b09698bee02162ca3793727e274", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-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" "-w" "/opt/rustwide/workdir" "--user" "0:0" "75f7db822acf90d50627b23446461e07abcf2b09698bee02162ca3793727e274" "/opt/rustwide/cargo-home/bin/cargo" "+4eb62535fc12dd1a63fd43a4173e224e79313c4d" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.37
[INFO] [stderr]    Compiling syn v1.0.91
[INFO] [stderr]    Compiling libc v0.2.124
[INFO] [stderr]    Compiling serde_derive v1.0.136
[INFO] [stderr]    Compiling unicode-segmentation v1.9.0
[INFO] [stderr]     Checking unicode-width v0.1.9
[INFO] [stderr]    Compiling serde v1.0.136
[INFO] [stderr]     Checking vec_map v0.8.2
[INFO] [stderr]    Compiling serde_json v1.0.79
[INFO] [stderr]     Checking strsim v0.8.0
[INFO] [stderr]     Checking either v1.6.1
[INFO] [stderr]     Checking tinyvec_macros v0.1.0
[INFO] [stderr]     Checking tap v1.0.1
[INFO] [stderr]     Checking smallvec v1.8.0
[INFO] [stderr]     Checking tinyvec v1.5.1
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]     Checking itertools v0.10.3
[INFO] [stderr]    Compiling heck v0.3.3
[INFO] [stderr]    Compiling quote v1.0.18
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking clap v2.34.0
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling structopt-derive v0.4.18
[INFO] [stderr]     Checking structopt v0.3.26
[INFO] [stderr]     Checking chess v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::collections::BinaryHeap`
[INFO] [stdout]  --> src/minimax.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use std::collections::BinaryHeap;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Color::*`
[INFO] [stdout]  --> src/minimax.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 | use Color::*;
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::default`
[INFO] [stdout]  --> src/opt.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::default;
[INFO] [stdout]   |     ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Color::*`
[INFO] [stdout]  --> src/start_board.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use Color::*;
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Kind::*`
[INFO] [stdout]  --> src/start_board.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use Kind::*;
[INFO] [stdout]   |     ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::settings::*`
[INFO] [stdout]  --> src/table.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use crate::settings::*;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::collections::BinaryHeap`
[INFO] [stdout]  --> src/minimax.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use std::collections::BinaryHeap;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Color::*`
[INFO] [stdout]  --> src/minimax.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 | use Color::*;
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::default`
[INFO] [stdout]  --> src/opt.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::default;
[INFO] [stdout]   |     ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Color::*`
[INFO] [stdout]  --> src/start_board.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use Color::*;
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Kind::*`
[INFO] [stdout]  --> src/start_board.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use Kind::*;
[INFO] [stdout]   |     ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::settings::*`
[INFO] [stdout]  --> src/table.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use crate::settings::*;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `rough_estimate`
[INFO] [stdout]   --> src/minimax.rs:77:13
[INFO] [stdout]    |
[INFO] [stdout] 77 |         let rough_estimate = player_score - opponent_score;
[INFO] [stdout]    |             ^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_rough_estimate`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `options`
[INFO] [stdout]   --> src/main.rs:15:9
[INFO] [stdout]    |
[INFO] [stdout] 15 |     let options = opt::Opt::from_args();
[INFO] [stdout]    |         ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_options`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `rough_estimate`
[INFO] [stdout]   --> src/minimax.rs:77:13
[INFO] [stdout]    |
[INFO] [stdout] 77 |         let rough_estimate = player_score - opponent_score;
[INFO] [stdout]    |             ^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_rough_estimate`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `options`
[INFO] [stdout]   --> src/main.rs:15:9
[INFO] [stdout]    |
[INFO] [stdout] 15 |     let options = opt::Opt::from_args();
[INFO] [stdout]    |         ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_options`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 14.11s
[INFO] running `Command { std: "docker" "inspect" "75f7db822acf90d50627b23446461e07abcf2b09698bee02162ca3793727e274", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "75f7db822acf90d50627b23446461e07abcf2b09698bee02162ca3793727e274", kill_on_drop: false }`
[INFO] [stdout] 75f7db822acf90d50627b23446461e07abcf2b09698bee02162ca3793727e274
