[INFO] cloning repository https://github.com/csreid/chess-engine
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/csreid/chess-engine" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcsreid%2Fchess-engine", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcsreid%2Fchess-engine'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] d026bd5a88da27b9e6a6d631a54d585ddafa7b92
[INFO] testing csreid/chess-engine against 1.75.0 for beta-1.76-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcsreid%2Fchess-engine" "/workspace/builds/worker-7-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/csreid/chess-engine on toolchain 1.75.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.75.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/csreid/chess-engine
[INFO] finished tweaking git repo https://github.com/csreid/chess-engine
[INFO] tweaked toml for git repo https://github.com/csreid/chess-engine written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/csreid/chess-engine 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" "+1.75.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded chess v2.0.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.75.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 853659afe23197705650d5bfac77319d1ed841c11c485b0abb6d31c85c4049a3
[INFO] running `Command { std: "docker" "start" "-a" "853659afe23197705650d5bfac77319d1ed841c11c485b0abb6d31c85c4049a3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "853659afe23197705650d5bfac77319d1ed841c11c485b0abb6d31c85c4049a3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "853659afe23197705650d5bfac77319d1ed841c11c485b0abb6d31c85c4049a3", kill_on_drop: false }`
[INFO] [stdout] 853659afe23197705650d5bfac77319d1ed841c11c485b0abb6d31c85c4049a3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.75.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 43c5fd30984946885154aeef8811e38b5bde7ccda1815598464b4e8b9a6345a7
[INFO] running `Command { std: "docker" "start" "-a" "43c5fd30984946885154aeef8811e38b5bde7ccda1815598464b4e8b9a6345a7", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.43
[INFO] [stderr]    Compiling num-traits v0.2.6
[INFO] [stderr]    Compiling num-integer v0.1.39
[INFO] [stderr]    Compiling nodrop v0.1.13
[INFO] [stderr]    Compiling cfg-if v0.1.6
[INFO] [stderr]    Compiling rustc-serialize v0.3.24
[INFO] [stderr]    Compiling memoffset v0.2.1
[INFO] [stderr]    Compiling lazy_static v1.2.0
[INFO] [stderr]    Compiling num-iter v0.1.37
[INFO] [stderr]    Compiling rayon-core v1.4.1
[INFO] [stderr]    Compiling scopeguard v0.3.3
[INFO] [stderr]    Compiling rayon v1.0.3
[INFO] [stderr]    Compiling either v1.5.0
[INFO] [stderr]    Compiling crossbeam-utils v0.2.2
[INFO] [stderr]    Compiling arrayvec v0.4.7
[INFO] [stderr]    Compiling crossbeam-epoch v0.3.1
[INFO] [stderr]    Compiling rand v0.4.3
[INFO] [stderr]    Compiling num_cpus v1.8.0
[INFO] [stderr]    Compiling crossbeam-deque v0.2.0
[INFO] [stderr]    Compiling chess v2.0.1
[INFO] [stderr]    Compiling num-bigint v0.1.44
[INFO] [stderr]    Compiling num-complex v0.1.43
[INFO] [stderr]    Compiling num-rational v0.1.42
[INFO] [stderr]    Compiling num v0.1.42
[INFO] [stderr]    Compiling stopwatch v0.0.7
[INFO] [stderr]    Compiling chess-engine v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused imports: `ALL_FILES`, `ALL_RANKS`, `Piece`, `Square`
[INFO] [stdout]   --> src/main.rs:9:2
[INFO] [stdout]    |
[INFO] [stdout] 9  |     ALL_FILES,
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout] 10 |     ALL_RANKS,
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 16 |     Piece,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 17 |     Square,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::io`
[INFO] [stdout]   --> src/main.rs:20:5
[INFO] [stdout]    |
[INFO] [stdout] 20 | use std::io;
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `rand::*`
[INFO] [stdout]   --> src/main.rs:22:5
[INFO] [stdout]    |
[INFO] [stdout] 22 | use rand::*;
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `finished_count`
[INFO] [stdout]   --> src/main.rs:86:10
[INFO] [stdout]    |
[INFO] [stdout] 86 |     let mut finished_count = 0;
[INFO] [stdout]    |             ^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_finished_count`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `total_count`
[INFO] [stdout]   --> src/main.rs:87:10
[INFO] [stdout]    |
[INFO] [stdout] 87 |     let mut total_count = 0;
[INFO] [stdout]    |             ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_total_count`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `rng`
[INFO] [stdout]   --> src/main.rs:91:10
[INFO] [stdout]    |
[INFO] [stdout] 91 |     let mut rng = rand::thread_rng();
[INFO] [stdout]    |             ^^^ help: if this is intentional, prefix it with an underscore: `_rng`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `iter2`
[INFO] [stdout]   --> src/main.rs:93:10
[INFO] [stdout]    |
[INFO] [stdout] 93 |     let mut iter2 = MoveGen::new_legal(&board);
[INFO] [stdout]    |             ^^^^^ help: if this is intentional, prefix it with an underscore: `_iter2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `count`
[INFO] [stdout]   --> src/main.rs:94:10
[INFO] [stdout]    |
[INFO] [stdout] 94 |     let mut count = 0;
[INFO] [stdout]    |             ^^^^^ help: if this is intentional, prefix it with an underscore: `_count`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/main.rs:86:6
[INFO] [stdout]    |
[INFO] [stdout] 86 |     let mut finished_count = 0;
[INFO] [stdout]    |         ----^^^^^^^^^^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/main.rs:87:6
[INFO] [stdout]    |
[INFO] [stdout] 87 |     let mut total_count = 0;
[INFO] [stdout]    |         ----^^^^^^^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/main.rs:90:6
[INFO] [stdout]    |
[INFO] [stdout] 90 |     let mut board = Board::from_fen(fen.to_string()).unwrap();
[INFO] [stdout]    |         ----^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/main.rs:91:6
[INFO] [stdout]    |
[INFO] [stdout] 91 |     let mut rng = rand::thread_rng();
[INFO] [stdout]    |         ----^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/main.rs:93:6
[INFO] [stdout]    |
[INFO] [stdout] 93 |     let mut iter2 = MoveGen::new_legal(&board);
[INFO] [stdout]    |         ----^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/main.rs:94:6
[INFO] [stdout]    |
[INFO] [stdout] 94 |     let mut count = 0;
[INFO] [stdout]    |         ----^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `board` is never read
[INFO] [stdout]   --> src/main.rs:37:2
[INFO] [stdout]    |
[INFO] [stdout] 36 | struct SimResult {
[INFO] [stdout]    |        --------- field in this struct
[INFO] [stdout] 37 |     board: Board,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `SimResult` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 15 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 36.35s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: rustc-serialize v0.3.24
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 1`
[INFO] running `Command { std: "docker" "inspect" "43c5fd30984946885154aeef8811e38b5bde7ccda1815598464b4e8b9a6345a7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "43c5fd30984946885154aeef8811e38b5bde7ccda1815598464b4e8b9a6345a7", kill_on_drop: false }`
[INFO] [stdout] 43c5fd30984946885154aeef8811e38b5bde7ccda1815598464b4e8b9a6345a7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.75.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f6a6a6b85a0708ee056fbc567d33c0661f57d2c87be7545b8cc674d8aa8daf9e
[INFO] running `Command { std: "docker" "start" "-a" "f6a6a6b85a0708ee056fbc567d33c0661f57d2c87be7545b8cc674d8aa8daf9e", kill_on_drop: false }`
[INFO] [stderr]    Compiling chess-engine v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused imports: `ALL_FILES`, `ALL_RANKS`, `Piece`, `Square`
[INFO] [stdout]   --> src/main.rs:9:2
[INFO] [stdout]    |
[INFO] [stdout] 9  |     ALL_FILES,
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout] 10 |     ALL_RANKS,
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 16 |     Piece,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 17 |     Square,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::io`
[INFO] [stdout]   --> src/main.rs:20:5
[INFO] [stdout]    |
[INFO] [stdout] 20 | use std::io;
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `rand::*`
[INFO] [stdout]   --> src/main.rs:22:5
[INFO] [stdout]    |
[INFO] [stdout] 22 | use rand::*;
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `finished_count`
[INFO] [stdout]   --> src/main.rs:86:10
[INFO] [stdout]    |
[INFO] [stdout] 86 |     let mut finished_count = 0;
[INFO] [stdout]    |             ^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_finished_count`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `total_count`
[INFO] [stdout]   --> src/main.rs:87:10
[INFO] [stdout]    |
[INFO] [stdout] 87 |     let mut total_count = 0;
[INFO] [stdout]    |             ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_total_count`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `rng`
[INFO] [stdout]   --> src/main.rs:91:10
[INFO] [stdout]    |
[INFO] [stdout] 91 |     let mut rng = rand::thread_rng();
[INFO] [stdout]    |             ^^^ help: if this is intentional, prefix it with an underscore: `_rng`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `iter2`
[INFO] [stdout]   --> src/main.rs:93:10
[INFO] [stdout]    |
[INFO] [stdout] 93 |     let mut iter2 = MoveGen::new_legal(&board);
[INFO] [stdout]    |             ^^^^^ help: if this is intentional, prefix it with an underscore: `_iter2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `count`
[INFO] [stdout]   --> src/main.rs:94:10
[INFO] [stdout]    |
[INFO] [stdout] 94 |     let mut count = 0;
[INFO] [stdout]    |             ^^^^^ help: if this is intentional, prefix it with an underscore: `_count`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/main.rs:86:6
[INFO] [stdout]    |
[INFO] [stdout] 86 |     let mut finished_count = 0;
[INFO] [stdout]    |         ----^^^^^^^^^^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/main.rs:87:6
[INFO] [stdout]    |
[INFO] [stdout] 87 |     let mut total_count = 0;
[INFO] [stdout]    |         ----^^^^^^^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/main.rs:90:6
[INFO] [stdout]    |
[INFO] [stdout] 90 |     let mut board = Board::from_fen(fen.to_string()).unwrap();
[INFO] [stdout]    |         ----^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/main.rs:91:6
[INFO] [stdout]    |
[INFO] [stdout] 91 |     let mut rng = rand::thread_rng();
[INFO] [stdout]    |         ----^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/main.rs:93:6
[INFO] [stdout]    |
[INFO] [stdout] 93 |     let mut iter2 = MoveGen::new_legal(&board);
[INFO] [stdout]    |         ----^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/main.rs:94:6
[INFO] [stdout]    |
[INFO] [stdout] 94 |     let mut count = 0;
[INFO] [stdout]    |         ----^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `board` is never read
[INFO] [stdout]   --> src/main.rs:37:2
[INFO] [stdout]    |
[INFO] [stdout] 36 | struct SimResult {
[INFO] [stdout]    |        --------- field in this struct
[INFO] [stdout] 37 |     board: Board,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `SimResult` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 15 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.25s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: rustc-serialize v0.3.24
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 1`
[INFO] running `Command { std: "docker" "inspect" "f6a6a6b85a0708ee056fbc567d33c0661f57d2c87be7545b8cc674d8aa8daf9e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f6a6a6b85a0708ee056fbc567d33c0661f57d2c87be7545b8cc674d8aa8daf9e", kill_on_drop: false }`
[INFO] [stdout] f6a6a6b85a0708ee056fbc567d33c0661f57d2c87be7545b8cc674d8aa8daf9e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.75.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] daba21a692a9130a18c006737ca933afa0c6bbb712d3f070d9088913c5e7c85f
[INFO] running `Command { std: "docker" "start" "-a" "daba21a692a9130a18c006737ca933afa0c6bbb712d3f070d9088913c5e7c85f", kill_on_drop: false }`
[INFO] [stderr] warning: unused imports: `ALL_FILES`, `ALL_RANKS`, `Piece`, `Square`
[INFO] [stderr]   --> src/main.rs:9:2
[INFO] [stderr]    |
[INFO] [stderr] 9  |     ALL_FILES,
[INFO] [stderr]    |     ^^^^^^^^^
[INFO] [stderr] 10 |     ALL_RANKS,
[INFO] [stderr]    |     ^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 16 |     Piece,
[INFO] [stderr]    |     ^^^^^
[INFO] [stderr] 17 |     Square,
[INFO] [stderr]    |     ^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::io`
[INFO] [stderr]   --> src/main.rs:20:5
[INFO] [stderr]    |
[INFO] [stderr] 20 | use std::io;
[INFO] [stderr]    |     ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `rand::*`
[INFO] [stderr]   --> src/main.rs:22:5
[INFO] [stderr]    |
[INFO] [stderr] 22 | use rand::*;
[INFO] [stderr]    |     ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `finished_count`
[INFO] [stderr]   --> src/main.rs:86:10
[INFO] [stderr]    |
[INFO] [stderr] 86 |     let mut finished_count = 0;
[INFO] [stderr]    |             ^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_finished_count`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `total_count`
[INFO] [stderr]   --> src/main.rs:87:10
[INFO] [stderr]    |
[INFO] [stderr] 87 |     let mut total_count = 0;
[INFO] [stderr]    |             ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_total_count`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `rng`
[INFO] [stderr]   --> src/main.rs:91:10
[INFO] [stderr]    |
[INFO] [stderr] 91 |     let mut rng = rand::thread_rng();
[INFO] [stderr]    |             ^^^ help: if this is intentional, prefix it with an underscore: `_rng`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `iter2`
[INFO] [stderr]   --> src/main.rs:93:10
[INFO] [stderr]    |
[INFO] [stderr] 93 |     let mut iter2 = MoveGen::new_legal(&board);
[INFO] [stderr]    |             ^^^^^ help: if this is intentional, prefix it with an underscore: `_iter2`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `count`
[INFO] [stderr]   --> src/main.rs:94:10
[INFO] [stderr]    |
[INFO] [stderr] 94 |     let mut count = 0;
[INFO] [stderr]    |             ^^^^^ help: if this is intentional, prefix it with an underscore: `_count`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/main.rs:86:6
[INFO] [stderr]    |
[INFO] [stderr] 86 |     let mut finished_count = 0;
[INFO] [stderr]    |         ----^^^^^^^^^^^^^^
[INFO] [stderr]    |         |
[INFO] [stderr]    |         help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/main.rs:87:6
[INFO] [stderr]    |
[INFO] [stderr] 87 |     let mut total_count = 0;
[INFO] [stderr]    |         ----^^^^^^^^^^^
[INFO] [stderr]    |         |
[INFO] [stderr]    |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/main.rs:90:6
[INFO] [stderr]    |
[INFO] [stderr] 90 |     let mut board = Board::from_fen(fen.to_string()).unwrap();
[INFO] [stderr]    |         ----^^^^^
[INFO] [stderr]    |         |
[INFO] [stderr]    |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/main.rs:91:6
[INFO] [stderr]    |
[INFO] [stderr] 91 |     let mut rng = rand::thread_rng();
[INFO] [stderr]    |         ----^^^
[INFO] [stderr]    |         |
[INFO] [stderr]    |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/main.rs:93:6
[INFO] [stderr]    |
[INFO] [stderr] 93 |     let mut iter2 = MoveGen::new_legal(&board);
[INFO] [stderr]    |         ----^^^^^
[INFO] [stderr]    |         |
[INFO] [stderr]    |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/main.rs:94:6
[INFO] [stderr]    |
[INFO] [stderr] 94 |     let mut count = 0;
[INFO] [stderr]    |         ----^^^^^
[INFO] [stderr]    |         |
[INFO] [stderr]    |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: field `board` is never read
[INFO] [stderr]   --> src/main.rs:37:2
[INFO] [stderr]    |
[INFO] [stderr] 36 | struct SimResult {
[INFO] [stderr]    |        --------- field in this struct
[INFO] [stderr] 37 |     board: Board,
[INFO] [stderr]    |     ^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `SimResult` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `chess-engine` (bin "chess-engine" test) generated 15 warnings (run `cargo fix --bin "chess-engine" --tests` to apply 14 suggestions)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: rustc-serialize v0.3.24
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 1`
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/chess_engine-9fa5288e48a92923)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "daba21a692a9130a18c006737ca933afa0c6bbb712d3f070d9088913c5e7c85f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "daba21a692a9130a18c006737ca933afa0c6bbb712d3f070d9088913c5e7c85f", kill_on_drop: false }`
[INFO] [stdout] daba21a692a9130a18c006737ca933afa0c6bbb712d3f070d9088913c5e7c85f
