Dec 19 18:37:59.006 INFO checking csreid/chess-engine against master#d99a320cba42f661aebfa1293b7b2ec3603dda75 for pr-56955
Dec 19 18:37:59.006 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56955/worker-2/master#d99a320cba42f661aebfa1293b7b2ec3603dda75:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-56955/sources/master#d99a320cba42f661aebfa1293b7b2ec3603dda75/gh/csreid/chess-engine:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+d99a320cba42f661aebfa1293b7b2ec3603dda75-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 19 18:37:59.481 INFO [stdout] 5f19c39788d530fac18d617d5aea872a2b252a7b5a88ac5b1a1e4f3c4cdb6ac4
Dec 19 18:37:59.483 INFO running `"docker" "start" "-a" "5f19c39788d530fac18d617d5aea872a2b252a7b5a88ac5b1a1e4f3c4cdb6ac4"`
Dec 19 18:38:01.757 INFO [stderr]    Compiling chess v2.0.1
Dec 19 18:42:12.519 INFO [stderr]     Checking chess-engine v0.1.0 (/opt/crater/workdir)
Dec 19 18:42:12.858 INFO [stderr] warning: unused imports: `ALL_FILES`, `ALL_RANKS`, `Piece`, `Square`
Dec 19 18:42:12.858 INFO [stderr]   --> src/main.rs:9:2
Dec 19 18:42:12.858 INFO [stderr]    |
Dec 19 18:42:12.858 INFO [stderr] 9  |     ALL_FILES,
Dec 19 18:42:12.858 INFO [stderr]    |     ^^^^^^^^^
Dec 19 18:42:12.858 INFO [stderr] 10 |     ALL_RANKS,
Dec 19 18:42:12.858 INFO [stderr]    |     ^^^^^^^^^
Dec 19 18:42:12.858 INFO [stderr] ...
Dec 19 18:42:12.858 INFO [stderr] 16 |     Piece,
Dec 19 18:42:12.858 INFO [stderr]    |     ^^^^^
Dec 19 18:42:12.858 INFO [stderr] 17 |     Square,
Dec 19 18:42:12.858 INFO [stderr]    |     ^^^^^^
Dec 19 18:42:12.858 INFO [stderr]    |
Dec 19 18:42:12.858 INFO [stderr]    = note: #[warn(unused_imports)] on by default
Dec 19 18:42:12.858 INFO [stderr] 
Dec 19 18:42:12.858 INFO [stderr] warning: unused import: `std::io`
Dec 19 18:42:12.858 INFO [stderr]   --> src/main.rs:20:5
Dec 19 18:42:12.858 INFO [stderr]    |
Dec 19 18:42:12.858 INFO [stderr] 20 | use std::io;
Dec 19 18:42:12.858 INFO [stderr]    |     ^^^^^^^
Dec 19 18:42:12.858 INFO [stderr] 
Dec 19 18:42:12.858 INFO [stderr] warning: unused import: `rand::*`
Dec 19 18:42:12.858 INFO [stderr]   --> src/main.rs:22:5
Dec 19 18:42:12.858 INFO [stderr]    |
Dec 19 18:42:12.858 INFO [stderr] 22 | use rand::*;
Dec 19 18:42:12.858 INFO [stderr]    |     ^^^^^^^
Dec 19 18:42:12.858 INFO [stderr] 
Dec 19 18:42:12.878 INFO [stderr] warning: unused imports: `ALL_FILES`, `ALL_RANKS`, `Piece`, `Square`
Dec 19 18:42:12.878 INFO [stderr]   --> src/main.rs:9:2
Dec 19 18:42:12.878 INFO [stderr]    |
Dec 19 18:42:12.878 INFO [stderr] 9  |     ALL_FILES,
Dec 19 18:42:12.878 INFO [stderr]    |     ^^^^^^^^^
Dec 19 18:42:12.878 INFO [stderr] 10 |     ALL_RANKS,
Dec 19 18:42:12.878 INFO [stderr]    |     ^^^^^^^^^
Dec 19 18:42:12.878 INFO [stderr] ...
Dec 19 18:42:12.878 INFO [stderr] 16 |     Piece,
Dec 19 18:42:12.878 INFO [stderr]    |     ^^^^^
Dec 19 18:42:12.878 INFO [stderr] 17 |     Square,
Dec 19 18:42:12.878 INFO [stderr]    |     ^^^^^^
Dec 19 18:42:12.878 INFO [stderr]    |
Dec 19 18:42:12.878 INFO [stderr]    = note: #[warn(unused_imports)] on by default
Dec 19 18:42:12.878 INFO [stderr] 
Dec 19 18:42:12.878 INFO [stderr] warning: unused import: `std::io`
Dec 19 18:42:12.878 INFO [stderr]   --> src/main.rs:20:5
Dec 19 18:42:12.878 INFO [stderr]    |
Dec 19 18:42:12.878 INFO [stderr] 20 | use std::io;
Dec 19 18:42:12.878 INFO [stderr]    |     ^^^^^^^
Dec 19 18:42:12.878 INFO [stderr] 
Dec 19 18:42:12.878 INFO [stderr] warning: unused import: `rand::*`
Dec 19 18:42:12.878 INFO [stderr]   --> src/main.rs:22:5
Dec 19 18:42:12.878 INFO [stderr]    |
Dec 19 18:42:12.878 INFO [stderr] 22 | use rand::*;
Dec 19 18:42:12.878 INFO [stderr]    |     ^^^^^^^
Dec 19 18:42:12.878 INFO [stderr] 
Dec 19 18:42:12.972 INFO [stderr] warning: unused variable: `finished_count`
Dec 19 18:42:12.972 INFO [stderr]   --> src/main.rs:86:10
Dec 19 18:42:12.972 INFO [stderr]    |
Dec 19 18:42:12.972 INFO [stderr] 86 |     let mut finished_count = 0;
Dec 19 18:42:12.972 INFO [stderr]    |             ^^^^^^^^^^^^^^ help: consider using `_finished_count` instead
Dec 19 18:42:12.972 INFO [stderr]    |
Dec 19 18:42:12.972 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 19 18:42:12.972 INFO [stderr] 
Dec 19 18:42:12.972 INFO [stderr] warning: unused variable: `total_count`
Dec 19 18:42:12.972 INFO [stderr]   --> src/main.rs:87:10
Dec 19 18:42:12.972 INFO [stderr]    |
Dec 19 18:42:12.972 INFO [stderr] 87 |     let mut total_count = 0;
Dec 19 18:42:12.972 INFO [stderr]    |             ^^^^^^^^^^^ help: consider using `_total_count` instead
Dec 19 18:42:12.972 INFO [stderr] 
Dec 19 18:42:12.972 INFO [stderr] warning: unused variable: `rng`
Dec 19 18:42:12.972 INFO [stderr]   --> src/main.rs:91:10
Dec 19 18:42:12.972 INFO [stderr]    |
Dec 19 18:42:12.972 INFO [stderr] 91 |     let mut rng = rand::thread_rng();
Dec 19 18:42:12.973 INFO [stderr]    |             ^^^ help: consider using `_rng` instead
Dec 19 18:42:12.973 INFO [stderr] 
Dec 19 18:42:12.973 INFO [stderr] warning: unused variable: `iter2`
Dec 19 18:42:12.973 INFO [stderr]   --> src/main.rs:93:10
Dec 19 18:42:12.973 INFO [stderr]    |
Dec 19 18:42:12.973 INFO [stderr] 93 |     let mut iter2 = MoveGen::new_legal(&board);
Dec 19 18:42:12.973 INFO [stderr]    |             ^^^^^ help: consider using `_iter2` instead
Dec 19 18:42:12.973 INFO [stderr] 
Dec 19 18:42:12.973 INFO [stderr] warning: unused variable: `count`
Dec 19 18:42:12.973 INFO [stderr]   --> src/main.rs:94:10
Dec 19 18:42:12.973 INFO [stderr]    |
Dec 19 18:42:12.973 INFO [stderr] 94 |     let mut count = 0;
Dec 19 18:42:12.973 INFO [stderr]    |             ^^^^^ help: consider using `_count` instead
Dec 19 18:42:12.973 INFO [stderr] 
Dec 19 18:42:12.976 INFO [stderr] warning: unused variable: `finished_count`
Dec 19 18:42:12.976 INFO [stderr]   --> src/main.rs:86:10
Dec 19 18:42:12.976 INFO [stderr]    |
Dec 19 18:42:12.976 INFO [stderr] 86 |     let mut finished_count = 0;
Dec 19 18:42:12.976 INFO [stderr]    |             ^^^^^^^^^^^^^^ help: consider using `_finished_count` instead
Dec 19 18:42:12.976 INFO [stderr]    |
Dec 19 18:42:12.976 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 19 18:42:12.976 INFO [stderr] 
Dec 19 18:42:12.976 INFO [stderr] warning: unused variable: `total_count`
Dec 19 18:42:12.976 INFO [stderr]   --> src/main.rs:87:10
Dec 19 18:42:12.976 INFO [stderr]    |
Dec 19 18:42:12.976 INFO [stderr] 87 |     let mut total_count = 0;
Dec 19 18:42:12.976 INFO [stderr]    |             ^^^^^^^^^^^ help: consider using `_total_count` instead
Dec 19 18:42:12.976 INFO [stderr] 
Dec 19 18:42:12.976 INFO [stderr] warning: unused variable: `rng`
Dec 19 18:42:12.976 INFO [stderr]   --> src/main.rs:91:10
Dec 19 18:42:12.976 INFO [stderr]    |
Dec 19 18:42:12.976 INFO [stderr] 91 |     let mut rng = rand::thread_rng();
Dec 19 18:42:12.976 INFO [stderr]    |             ^^^ help: consider using `_rng` instead
Dec 19 18:42:12.976 INFO [stderr] 
Dec 19 18:42:12.976 INFO [stderr] warning: unused variable: `iter2`
Dec 19 18:42:12.976 INFO [stderr]   --> src/main.rs:93:10
Dec 19 18:42:12.976 INFO [stderr]    |
Dec 19 18:42:12.976 INFO [stderr] 93 |     let mut iter2 = MoveGen::new_legal(&board);
Dec 19 18:42:12.977 INFO [stderr]    |             ^^^^^ help: consider using `_iter2` instead
Dec 19 18:42:12.977 INFO [stderr] 
Dec 19 18:42:12.977 INFO [stderr] warning: unused variable: `count`
Dec 19 18:42:12.977 INFO [stderr]   --> src/main.rs:94:10
Dec 19 18:42:12.977 INFO [stderr]    |
Dec 19 18:42:12.977 INFO [stderr] 94 |     let mut count = 0;
Dec 19 18:42:12.977 INFO [stderr]    |             ^^^^^ help: consider using `_count` instead
Dec 19 18:42:12.977 INFO [stderr] 
Dec 19 18:42:12.984 INFO [stderr] warning: variable does not need to be mutable
Dec 19 18:42:12.984 INFO [stderr]   --> src/main.rs:86:6
Dec 19 18:42:12.984 INFO [stderr]    |
Dec 19 18:42:12.984 INFO [stderr] 86 |     let mut finished_count = 0;
Dec 19 18:42:12.984 INFO [stderr]    |         ----^^^^^^^^^^^^^^
Dec 19 18:42:12.984 INFO [stderr]    |         |
Dec 19 18:42:12.984 INFO [stderr]    |         help: remove this `mut`
Dec 19 18:42:12.984 INFO [stderr]    |
Dec 19 18:42:12.984 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 19 18:42:12.984 INFO [stderr] 
Dec 19 18:42:12.984 INFO [stderr] warning: variable does not need to be mutable
Dec 19 18:42:12.984 INFO [stderr]   --> src/main.rs:87:6
Dec 19 18:42:12.984 INFO [stderr]    |
Dec 19 18:42:12.984 INFO [stderr] 87 |     let mut total_count = 0;
Dec 19 18:42:12.984 INFO [stderr]    |         ----^^^^^^^^^^^
Dec 19 18:42:12.985 INFO [stderr]    |         |
Dec 19 18:42:12.985 INFO [stderr]    |         help: remove this `mut`
Dec 19 18:42:12.985 INFO [stderr] 
Dec 19 18:42:12.985 INFO [stderr] warning: variable does not need to be mutable
Dec 19 18:42:12.985 INFO [stderr]   --> src/main.rs:90:6
Dec 19 18:42:12.985 INFO [stderr]    |
Dec 19 18:42:12.985 INFO [stderr] 90 |     let mut board = Board::from_fen(fen.to_string()).unwrap();
Dec 19 18:42:12.985 INFO [stderr]    |         ----^^^^^
Dec 19 18:42:12.985 INFO [stderr]    |         |
Dec 19 18:42:12.985 INFO [stderr]    |         help: remove this `mut`
Dec 19 18:42:12.985 INFO [stderr] 
Dec 19 18:42:12.985 INFO [stderr] warning: variable does not need to be mutable
Dec 19 18:42:12.985 INFO [stderr]   --> src/main.rs:91:6
Dec 19 18:42:12.985 INFO [stderr]    |
Dec 19 18:42:12.985 INFO [stderr] 91 |     let mut rng = rand::thread_rng();
Dec 19 18:42:12.985 INFO [stderr]    |         ----^^^
Dec 19 18:42:12.985 INFO [stderr]    |         |
Dec 19 18:42:12.985 INFO [stderr]    |         help: remove this `mut`
Dec 19 18:42:12.985 INFO [stderr] 
Dec 19 18:42:12.985 INFO [stderr] warning: variable does not need to be mutable
Dec 19 18:42:12.985 INFO [stderr]   --> src/main.rs:93:6
Dec 19 18:42:12.985 INFO [stderr]    |
Dec 19 18:42:12.985 INFO [stderr] 93 |     let mut iter2 = MoveGen::new_legal(&board);
Dec 19 18:42:12.985 INFO [stderr]    |         ----^^^^^
Dec 19 18:42:12.985 INFO [stderr]    |         |
Dec 19 18:42:12.985 INFO [stderr]    |         help: remove this `mut`
Dec 19 18:42:12.985 INFO [stderr] 
Dec 19 18:42:12.985 INFO [stderr] warning: variable does not need to be mutable
Dec 19 18:42:12.985 INFO [stderr]   --> src/main.rs:94:6
Dec 19 18:42:12.985 INFO [stderr]    |
Dec 19 18:42:12.985 INFO [stderr] 94 |     let mut count = 0;
Dec 19 18:42:12.985 INFO [stderr]    |         ----^^^^^
Dec 19 18:42:12.985 INFO [stderr]    |         |
Dec 19 18:42:12.985 INFO [stderr]    |         help: remove this `mut`
Dec 19 18:42:12.985 INFO [stderr] 
Dec 19 18:42:12.995 INFO [stderr] warning: variable does not need to be mutable
Dec 19 18:42:12.995 INFO [stderr]   --> src/main.rs:86:6
Dec 19 18:42:12.995 INFO [stderr]    |
Dec 19 18:42:12.995 INFO [stderr] 86 |     let mut finished_count = 0;
Dec 19 18:42:12.995 INFO [stderr]    |         ----^^^^^^^^^^^^^^
Dec 19 18:42:12.995 INFO [stderr]    |         |
Dec 19 18:42:12.995 INFO [stderr]    |         help: remove this `mut`
Dec 19 18:42:12.995 INFO [stderr]    |
Dec 19 18:42:12.995 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 19 18:42:12.995 INFO [stderr] 
Dec 19 18:42:12.995 INFO [stderr] warning: variable does not need to be mutable
Dec 19 18:42:12.995 INFO [stderr]   --> src/main.rs:87:6
Dec 19 18:42:12.995 INFO [stderr]    |
Dec 19 18:42:12.995 INFO [stderr] 87 |     let mut total_count = 0;
Dec 19 18:42:12.995 INFO [stderr]    |         ----^^^^^^^^^^^
Dec 19 18:42:12.995 INFO [stderr]    |         |
Dec 19 18:42:12.995 INFO [stderr]    |         help: remove this `mut`
Dec 19 18:42:12.995 INFO [stderr] 
Dec 19 18:42:12.995 INFO [stderr] warning: variable does not need to be mutable
Dec 19 18:42:12.995 INFO [stderr]   --> src/main.rs:90:6
Dec 19 18:42:12.995 INFO [stderr]    |
Dec 19 18:42:12.995 INFO [stderr] 90 |     let mut board = Board::from_fen(fen.to_string()).unwrap();
Dec 19 18:42:12.995 INFO [stderr]    |         ----^^^^^
Dec 19 18:42:12.995 INFO [stderr]    |         |
Dec 19 18:42:12.995 INFO [stderr]    |         help: remove this `mut`
Dec 19 18:42:12.995 INFO [stderr] 
Dec 19 18:42:12.995 INFO [stderr] warning: variable does not need to be mutable
Dec 19 18:42:12.995 INFO [stderr]   --> src/main.rs:91:6
Dec 19 18:42:12.995 INFO [stderr]    |
Dec 19 18:42:12.995 INFO [stderr] 91 |     let mut rng = rand::thread_rng();
Dec 19 18:42:12.995 INFO [stderr]    |         ----^^^
Dec 19 18:42:12.995 INFO [stderr]    |         |
Dec 19 18:42:12.995 INFO [stderr]    |         help: remove this `mut`
Dec 19 18:42:12.995 INFO [stderr] 
Dec 19 18:42:12.995 INFO [stderr] warning: variable does not need to be mutable
Dec 19 18:42:12.995 INFO [stderr]   --> src/main.rs:93:6
Dec 19 18:42:12.995 INFO [stderr]    |
Dec 19 18:42:12.995 INFO [stderr] 93 |     let mut iter2 = MoveGen::new_legal(&board);
Dec 19 18:42:12.995 INFO [stderr]    |         ----^^^^^
Dec 19 18:42:12.995 INFO [stderr]    |         |
Dec 19 18:42:12.995 INFO [stderr]    |         help: remove this `mut`
Dec 19 18:42:12.995 INFO [stderr] 
Dec 19 18:42:12.995 INFO [stderr] warning: variable does not need to be mutable
Dec 19 18:42:12.995 INFO [stderr]   --> src/main.rs:94:6
Dec 19 18:42:12.995 INFO [stderr]    |
Dec 19 18:42:12.995 INFO [stderr] 94 |     let mut count = 0;
Dec 19 18:42:12.995 INFO [stderr]    |         ----^^^^^
Dec 19 18:42:12.995 INFO [stderr]    |         |
Dec 19 18:42:12.995 INFO [stderr]    |         help: remove this `mut`
Dec 19 18:42:12.996 INFO [stderr] 
Dec 19 18:42:13.057 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4m 11s
Dec 19 18:42:13.380 INFO running `"docker" "inspect" "5f19c39788d530fac18d617d5aea872a2b252a7b5a88ac5b1a1e4f3c4cdb6ac4"`
Dec 19 18:42:13.574 INFO running `"docker" "rm" "-f" "5f19c39788d530fac18d617d5aea872a2b252a7b5a88ac5b1a1e4f3c4cdb6ac4"`
Dec 19 18:42:13.699 INFO [stdout] 5f19c39788d530fac18d617d5aea872a2b252a7b5a88ac5b1a1e4f3c4cdb6ac4