Dec 18 02:01:33.951 INFO checking csreid/chess-engine against try#0b8c5828f68d7b2840b81fa51239346dc97fef5a for pr-54252
Dec 18 02:01:33.951 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-54252/worker-3/try#0b8c5828f68d7b2840b81fa51239346dc97fef5a:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-54252/sources/try#0b8c5828f68d7b2840b81fa51239346dc97fef5a/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" "+0b8c5828f68d7b2840b81fa51239346dc97fef5a-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 18 02:01:34.478 INFO [stdout] f2ddd139a877c23e0845747b9a1bde233a80c0f225b793150ecf72c0e51160bf
Dec 18 02:01:34.480 INFO running `"docker" "start" "-a" "f2ddd139a877c23e0845747b9a1bde233a80c0f225b793150ecf72c0e51160bf"`
Dec 18 02:01:35.947 INFO [stderr]    Compiling chess v2.0.1
Dec 18 02:01:35.972 INFO [stderr]     Checking stopwatch v0.0.7
Dec 18 02:06:04.558 INFO [stderr]     Checking chess-engine v0.1.0 (/opt/crater/workdir)
Dec 18 02:06:05.060 INFO [stderr] warning: unused imports: `ALL_FILES`, `ALL_RANKS`, `Piece`, `Square`
Dec 18 02:06:05.060 INFO [stderr]   --> src/main.rs:9:2
Dec 18 02:06:05.060 INFO [stderr]    |
Dec 18 02:06:05.060 INFO [stderr] 9  |     ALL_FILES,
Dec 18 02:06:05.060 INFO [stderr]    |     ^^^^^^^^^
Dec 18 02:06:05.060 INFO [stderr] 10 |     ALL_RANKS,
Dec 18 02:06:05.060 INFO [stderr]    |     ^^^^^^^^^
Dec 18 02:06:05.060 INFO [stderr] ...
Dec 18 02:06:05.061 INFO [stderr] 16 |     Piece,
Dec 18 02:06:05.061 INFO [stderr]    |     ^^^^^
Dec 18 02:06:05.061 INFO [stderr] 17 |     Square,
Dec 18 02:06:05.061 INFO [stderr]    |     ^^^^^^
Dec 18 02:06:05.061 INFO [stderr]    |
Dec 18 02:06:05.061 INFO [stderr]    = note: #[warn(unused_imports)] on by default
Dec 18 02:06:05.061 INFO [stderr] 
Dec 18 02:06:05.061 INFO [stderr] warning: unused import: `std::io`
Dec 18 02:06:05.061 INFO [stderr]   --> src/main.rs:20:5
Dec 18 02:06:05.061 INFO [stderr]    |
Dec 18 02:06:05.061 INFO [stderr] 20 | use std::io;
Dec 18 02:06:05.061 INFO [stderr]    |     ^^^^^^^
Dec 18 02:06:05.061 INFO [stderr] 
Dec 18 02:06:05.061 INFO [stderr] warning: unused import: `rand::*`
Dec 18 02:06:05.061 INFO [stderr]   --> src/main.rs:22:5
Dec 18 02:06:05.061 INFO [stderr]    |
Dec 18 02:06:05.061 INFO [stderr] 22 | use rand::*;
Dec 18 02:06:05.061 INFO [stderr]    |     ^^^^^^^
Dec 18 02:06:05.061 INFO [stderr] 
Dec 18 02:06:05.083 INFO [stderr] warning: unused imports: `ALL_FILES`, `ALL_RANKS`, `Piece`, `Square`
Dec 18 02:06:05.083 INFO [stderr]   --> src/main.rs:9:2
Dec 18 02:06:05.083 INFO [stderr]    |
Dec 18 02:06:05.083 INFO [stderr] 9  |     ALL_FILES,
Dec 18 02:06:05.083 INFO [stderr]    |     ^^^^^^^^^
Dec 18 02:06:05.083 INFO [stderr] 10 |     ALL_RANKS,
Dec 18 02:06:05.083 INFO [stderr]    |     ^^^^^^^^^
Dec 18 02:06:05.083 INFO [stderr] ...
Dec 18 02:06:05.083 INFO [stderr] 16 |     Piece,
Dec 18 02:06:05.083 INFO [stderr]    |     ^^^^^
Dec 18 02:06:05.083 INFO [stderr] 17 |     Square,
Dec 18 02:06:05.083 INFO [stderr]    |     ^^^^^^
Dec 18 02:06:05.083 INFO [stderr]    |
Dec 18 02:06:05.083 INFO [stderr]    = note: #[warn(unused_imports)] on by default
Dec 18 02:06:05.083 INFO [stderr] 
Dec 18 02:06:05.083 INFO [stderr] warning: unused import: `std::io`
Dec 18 02:06:05.083 INFO [stderr]   --> src/main.rs:20:5
Dec 18 02:06:05.083 INFO [stderr]    |
Dec 18 02:06:05.083 INFO [stderr] 20 | use std::io;
Dec 18 02:06:05.083 INFO [stderr]    |     ^^^^^^^
Dec 18 02:06:05.083 INFO [stderr] 
Dec 18 02:06:05.083 INFO [stderr] warning: unused import: `rand::*`
Dec 18 02:06:05.083 INFO [stderr]   --> src/main.rs:22:5
Dec 18 02:06:05.083 INFO [stderr]    |
Dec 18 02:06:05.083 INFO [stderr] 22 | use rand::*;
Dec 18 02:06:05.083 INFO [stderr]    |     ^^^^^^^
Dec 18 02:06:05.083 INFO [stderr] 
Dec 18 02:06:05.184 INFO [stderr] warning: unused variable: `finished_count`
Dec 18 02:06:05.184 INFO [stderr]   --> src/main.rs:86:10
Dec 18 02:06:05.184 INFO [stderr]    |
Dec 18 02:06:05.184 INFO [stderr] 86 |     let mut finished_count = 0;
Dec 18 02:06:05.184 INFO [stderr]    |             ^^^^^^^^^^^^^^ help: consider using `_finished_count` instead
Dec 18 02:06:05.184 INFO [stderr]    |
Dec 18 02:06:05.184 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 18 02:06:05.184 INFO [stderr] 
Dec 18 02:06:05.184 INFO [stderr] warning: unused variable: `total_count`
Dec 18 02:06:05.184 INFO [stderr]   --> src/main.rs:87:10
Dec 18 02:06:05.184 INFO [stderr]    |
Dec 18 02:06:05.184 INFO [stderr] 87 |     let mut total_count = 0;
Dec 18 02:06:05.184 INFO [stderr]    |             ^^^^^^^^^^^ help: consider using `_total_count` instead
Dec 18 02:06:05.184 INFO [stderr] 
Dec 18 02:06:05.184 INFO [stderr] warning: unused variable: `rng`
Dec 18 02:06:05.184 INFO [stderr]   --> src/main.rs:91:10
Dec 18 02:06:05.184 INFO [stderr]    |
Dec 18 02:06:05.184 INFO [stderr] 91 |     let mut rng = rand::thread_rng();
Dec 18 02:06:05.184 INFO [stderr]    |             ^^^ help: consider using `_rng` instead
Dec 18 02:06:05.184 INFO [stderr] 
Dec 18 02:06:05.184 INFO [stderr] warning: unused variable: `iter2`
Dec 18 02:06:05.184 INFO [stderr]   --> src/main.rs:93:10
Dec 18 02:06:05.184 INFO [stderr]    |
Dec 18 02:06:05.184 INFO [stderr] 93 |     let mut iter2 = MoveGen::new_legal(&board);
Dec 18 02:06:05.184 INFO [stderr]    |             ^^^^^ help: consider using `_iter2` instead
Dec 18 02:06:05.184 INFO [stderr] 
Dec 18 02:06:05.184 INFO [stderr] warning: unused variable: `count`
Dec 18 02:06:05.184 INFO [stderr]   --> src/main.rs:94:10
Dec 18 02:06:05.184 INFO [stderr]    |
Dec 18 02:06:05.184 INFO [stderr] 94 |     let mut count = 0;
Dec 18 02:06:05.184 INFO [stderr]    |             ^^^^^ help: consider using `_count` instead
Dec 18 02:06:05.184 INFO [stderr] 
Dec 18 02:06:05.192 INFO [stderr] warning: variable does not need to be mutable
Dec 18 02:06:05.192 INFO [stderr]   --> src/main.rs:86:6
Dec 18 02:06:05.192 INFO [stderr]    |
Dec 18 02:06:05.192 INFO [stderr] 86 |     let mut finished_count = 0;
Dec 18 02:06:05.192 INFO [stderr]    |         ----^^^^^^^^^^^^^^
Dec 18 02:06:05.192 INFO [stderr]    |         |
Dec 18 02:06:05.192 INFO [stderr]    |         help: remove this `mut`
Dec 18 02:06:05.192 INFO [stderr]    |
Dec 18 02:06:05.192 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 18 02:06:05.192 INFO [stderr] 
Dec 18 02:06:05.192 INFO [stderr] warning: variable does not need to be mutable
Dec 18 02:06:05.192 INFO [stderr]   --> src/main.rs:87:6
Dec 18 02:06:05.192 INFO [stderr]    |
Dec 18 02:06:05.192 INFO [stderr] 87 |     let mut total_count = 0;
Dec 18 02:06:05.192 INFO [stderr]    |         ----^^^^^^^^^^^
Dec 18 02:06:05.192 INFO [stderr]    |         |
Dec 18 02:06:05.192 INFO [stderr]    |         help: remove this `mut`
Dec 18 02:06:05.192 INFO [stderr] 
Dec 18 02:06:05.192 INFO [stderr] warning: variable does not need to be mutable
Dec 18 02:06:05.192 INFO [stderr]   --> src/main.rs:90:6
Dec 18 02:06:05.192 INFO [stderr]    |
Dec 18 02:06:05.192 INFO [stderr] 90 |     let mut board = Board::from_fen(fen.to_string()).unwrap();
Dec 18 02:06:05.192 INFO [stderr]    |         ----^^^^^
Dec 18 02:06:05.192 INFO [stderr]    |         |
Dec 18 02:06:05.192 INFO [stderr]    |         help: remove this `mut`
Dec 18 02:06:05.192 INFO [stderr] 
Dec 18 02:06:05.192 INFO [stderr] warning: variable does not need to be mutable
Dec 18 02:06:05.192 INFO [stderr]   --> src/main.rs:91:6
Dec 18 02:06:05.192 INFO [stderr]    |
Dec 18 02:06:05.192 INFO [stderr] 91 |     let mut rng = rand::thread_rng();
Dec 18 02:06:05.192 INFO [stderr]    |         ----^^^
Dec 18 02:06:05.192 INFO [stderr]    |         |
Dec 18 02:06:05.192 INFO [stderr]    |         help: remove this `mut`
Dec 18 02:06:05.192 INFO [stderr] 
Dec 18 02:06:05.193 INFO [stderr] warning: variable does not need to be mutable
Dec 18 02:06:05.193 INFO [stderr]   --> src/main.rs:93:6
Dec 18 02:06:05.193 INFO [stderr]    |
Dec 18 02:06:05.193 INFO [stderr] 93 |     let mut iter2 = MoveGen::new_legal(&board);
Dec 18 02:06:05.193 INFO [stderr]    |         ----^^^^^
Dec 18 02:06:05.193 INFO [stderr]    |         |
Dec 18 02:06:05.193 INFO [stderr]    |         help: remove this `mut`
Dec 18 02:06:05.193 INFO [stderr] 
Dec 18 02:06:05.193 INFO [stderr] warning: variable does not need to be mutable
Dec 18 02:06:05.193 INFO [stderr]   --> src/main.rs:94:6
Dec 18 02:06:05.193 INFO [stderr]    |
Dec 18 02:06:05.193 INFO [stderr] 94 |     let mut count = 0;
Dec 18 02:06:05.193 INFO [stderr]    |         ----^^^^^
Dec 18 02:06:05.193 INFO [stderr]    |         |
Dec 18 02:06:05.193 INFO [stderr]    |         help: remove this `mut`
Dec 18 02:06:05.193 INFO [stderr] 
Dec 18 02:06:05.256 INFO [stderr] warning: unused variable: `finished_count`
Dec 18 02:06:05.256 INFO [stderr]   --> src/main.rs:86:10
Dec 18 02:06:05.256 INFO [stderr]    |
Dec 18 02:06:05.256 INFO [stderr] 86 |     let mut finished_count = 0;
Dec 18 02:06:05.256 INFO [stderr]    |             ^^^^^^^^^^^^^^ help: consider using `_finished_count` instead
Dec 18 02:06:05.256 INFO [stderr]    |
Dec 18 02:06:05.256 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 18 02:06:05.256 INFO [stderr] 
Dec 18 02:06:05.256 INFO [stderr] warning: unused variable: `total_count`
Dec 18 02:06:05.256 INFO [stderr]   --> src/main.rs:87:10
Dec 18 02:06:05.256 INFO [stderr]    |
Dec 18 02:06:05.256 INFO [stderr] 87 |     let mut total_count = 0;
Dec 18 02:06:05.256 INFO [stderr]    |             ^^^^^^^^^^^ help: consider using `_total_count` instead
Dec 18 02:06:05.256 INFO [stderr] 
Dec 18 02:06:05.256 INFO [stderr] warning: unused variable: `rng`
Dec 18 02:06:05.256 INFO [stderr]   --> src/main.rs:91:10
Dec 18 02:06:05.257 INFO [stderr]    |
Dec 18 02:06:05.257 INFO [stderr] 91 |     let mut rng = rand::thread_rng();
Dec 18 02:06:05.257 INFO [stderr]    |             ^^^ help: consider using `_rng` instead
Dec 18 02:06:05.257 INFO [stderr] 
Dec 18 02:06:05.257 INFO [stderr] warning: unused variable: `iter2`
Dec 18 02:06:05.257 INFO [stderr]   --> src/main.rs:93:10
Dec 18 02:06:05.257 INFO [stderr]    |
Dec 18 02:06:05.257 INFO [stderr] 93 |     let mut iter2 = MoveGen::new_legal(&board);
Dec 18 02:06:05.257 INFO [stderr]    |             ^^^^^ help: consider using `_iter2` instead
Dec 18 02:06:05.257 INFO [stderr] 
Dec 18 02:06:05.257 INFO [stderr] warning: unused variable: `count`
Dec 18 02:06:05.257 INFO [stderr]   --> src/main.rs:94:10
Dec 18 02:06:05.257 INFO [stderr]    |
Dec 18 02:06:05.257 INFO [stderr] 94 |     let mut count = 0;
Dec 18 02:06:05.257 INFO [stderr]    |             ^^^^^ help: consider using `_count` instead
Dec 18 02:06:05.257 INFO [stderr] 
Dec 18 02:06:05.280 INFO [stderr] warning: variable does not need to be mutable
Dec 18 02:06:05.280 INFO [stderr]   --> src/main.rs:86:6
Dec 18 02:06:05.280 INFO [stderr]    |
Dec 18 02:06:05.280 INFO [stderr] 86 |     let mut finished_count = 0;
Dec 18 02:06:05.280 INFO [stderr]    |         ----^^^^^^^^^^^^^^
Dec 18 02:06:05.280 INFO [stderr]    |         |
Dec 18 02:06:05.280 INFO [stderr]    |         help: remove this `mut`
Dec 18 02:06:05.280 INFO [stderr]    |
Dec 18 02:06:05.281 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 18 02:06:05.281 INFO [stderr] 
Dec 18 02:06:05.281 INFO [stderr] warning: variable does not need to be mutable
Dec 18 02:06:05.281 INFO [stderr]   --> src/main.rs:87:6
Dec 18 02:06:05.281 INFO [stderr]    |
Dec 18 02:06:05.281 INFO [stderr] 87 |     let mut total_count = 0;
Dec 18 02:06:05.281 INFO [stderr]    |         ----^^^^^^^^^^^
Dec 18 02:06:05.281 INFO [stderr]    |         |
Dec 18 02:06:05.281 INFO [stderr]    |         help: remove this `mut`
Dec 18 02:06:05.281 INFO [stderr] 
Dec 18 02:06:05.281 INFO [stderr] warning: variable does not need to be mutable
Dec 18 02:06:05.281 INFO [stderr]   --> src/main.rs:90:6
Dec 18 02:06:05.281 INFO [stderr]    |
Dec 18 02:06:05.281 INFO [stderr] 90 |     let mut board = Board::from_fen(fen.to_string()).unwrap();
Dec 18 02:06:05.281 INFO [stderr]    |         ----^^^^^
Dec 18 02:06:05.281 INFO [stderr]    |         |
Dec 18 02:06:05.281 INFO [stderr]    |         help: remove this `mut`
Dec 18 02:06:05.281 INFO [stderr] 
Dec 18 02:06:05.281 INFO [stderr] warning: variable does not need to be mutable
Dec 18 02:06:05.281 INFO [stderr]   --> src/main.rs:91:6
Dec 18 02:06:05.281 INFO [stderr]    |
Dec 18 02:06:05.281 INFO [stderr] 91 |     let mut rng = rand::thread_rng();
Dec 18 02:06:05.281 INFO [stderr]    |         ----^^^
Dec 18 02:06:05.281 INFO [stderr]    |         |
Dec 18 02:06:05.281 INFO [stderr]    |         help: remove this `mut`
Dec 18 02:06:05.281 INFO [stderr] 
Dec 18 02:06:05.281 INFO [stderr] warning: variable does not need to be mutable
Dec 18 02:06:05.281 INFO [stderr]   --> src/main.rs:93:6
Dec 18 02:06:05.281 INFO [stderr]    |
Dec 18 02:06:05.281 INFO [stderr] 93 |     let mut iter2 = MoveGen::new_legal(&board);
Dec 18 02:06:05.281 INFO [stderr]    |         ----^^^^^
Dec 18 02:06:05.281 INFO [stderr]    |         |
Dec 18 02:06:05.281 INFO [stderr]    |         help: remove this `mut`
Dec 18 02:06:05.281 INFO [stderr] 
Dec 18 02:06:05.281 INFO [stderr] warning: variable does not need to be mutable
Dec 18 02:06:05.281 INFO [stderr]   --> src/main.rs:94:6
Dec 18 02:06:05.281 INFO [stderr]    |
Dec 18 02:06:05.281 INFO [stderr] 94 |     let mut count = 0;
Dec 18 02:06:05.281 INFO [stderr]    |         ----^^^^^
Dec 18 02:06:05.281 INFO [stderr]    |         |
Dec 18 02:06:05.281 INFO [stderr]    |         help: remove this `mut`
Dec 18 02:06:05.281 INFO [stderr] 
Dec 18 02:06:05.308 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4m 29s
Dec 18 02:06:05.968 INFO running `"docker" "inspect" "f2ddd139a877c23e0845747b9a1bde233a80c0f225b793150ecf72c0e51160bf"`
Dec 18 02:06:06.239 INFO running `"docker" "rm" "-f" "f2ddd139a877c23e0845747b9a1bde233a80c0f225b793150ecf72c0e51160bf"`
Dec 18 02:06:06.493 INFO [stdout] f2ddd139a877c23e0845747b9a1bde233a80c0f225b793150ecf72c0e51160bf