Dec 19 13:43:41.343 INFO checking lesguillemets/curly-octo-funicular against master#d99a320cba42f661aebfa1293b7b2ec3603dda75 for pr-56955
Dec 19 13:43:41.343 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/lesguillemets/curly-octo-funicular:/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 13:43:41.747 INFO [stdout] ce3b06a40eb1b10c0800e07fd8a409fb8f6c803463bccb2b3cfa0ec6f4fe6aa6
Dec 19 13:43:41.749 INFO running `"docker" "start" "-a" "ce3b06a40eb1b10c0800e07fd8a409fb8f6c803463bccb2b3cfa0ec6f4fe6aa6"`
Dec 19 13:43:43.352 INFO [stderr]     Checking reversi v0.1.0 (/opt/crater/workdir)
Dec 19 13:43:43.552 INFO [stderr] warning: unused import: `std::io`
Dec 19 13:43:43.553 INFO [stderr]  --> src/board.rs:2:5
Dec 19 13:43:43.553 INFO [stderr]   |
Dec 19 13:43:43.557 INFO [stderr] 2 | use std::io;
Dec 19 13:43:43.557 INFO [stderr]   |     ^^^^^^^
Dec 19 13:43:43.557 INFO [stderr]   |
Dec 19 13:43:43.557 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 19 13:43:43.557 INFO [stderr] 
Dec 19 13:43:43.557 INFO [stderr] warning: unused import: `std::io`
Dec 19 13:43:43.557 INFO [stderr]  --> src/face.rs:2:5
Dec 19 13:43:43.557 INFO [stderr]   |
Dec 19 13:43:43.557 INFO [stderr] 2 | use std::io;
Dec 19 13:43:43.557 INFO [stderr]   |     ^^^^^^^
Dec 19 13:43:43.557 INFO [stderr] 
Dec 19 13:43:43.557 INFO [stderr] warning: unused import: `std::fmt`
Dec 19 13:43:43.557 INFO [stderr]  --> src/main.rs:5:5
Dec 19 13:43:43.557 INFO [stderr]   |
Dec 19 13:43:43.557 INFO [stderr] 5 | use std::fmt;
Dec 19 13:43:43.557 INFO [stderr]   |     ^^^^^^^^
Dec 19 13:43:43.557 INFO [stderr] 
Dec 19 13:43:43.600 INFO [stderr] warning: unused import: `std::io`
Dec 19 13:43:43.600 INFO [stderr]  --> src/board.rs:2:5
Dec 19 13:43:43.600 INFO [stderr]   |
Dec 19 13:43:43.600 INFO [stderr] 2 | use std::io;
Dec 19 13:43:43.600 INFO [stderr]   |     ^^^^^^^
Dec 19 13:43:43.600 INFO [stderr]   |
Dec 19 13:43:43.600 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 19 13:43:43.600 INFO [stderr] 
Dec 19 13:43:43.616 INFO [stderr] warning: unused import: `std::io`
Dec 19 13:43:43.616 INFO [stderr]  --> src/face.rs:2:5
Dec 19 13:43:43.616 INFO [stderr]   |
Dec 19 13:43:43.616 INFO [stderr] 2 | use std::io;
Dec 19 13:43:43.616 INFO [stderr]   |     ^^^^^^^
Dec 19 13:43:43.616 INFO [stderr] 
Dec 19 13:43:43.616 INFO [stderr] warning: unused import: `std::fmt`
Dec 19 13:43:43.616 INFO [stderr]  --> src/main.rs:5:5
Dec 19 13:43:43.616 INFO [stderr]   |
Dec 19 13:43:43.616 INFO [stderr] 5 | use std::fmt;
Dec 19 13:43:43.616 INFO [stderr]   |     ^^^^^^^^
Dec 19 13:43:43.616 INFO [stderr] 
Dec 19 13:43:43.665 INFO [stderr] warning: function cannot return without recursing
Dec 19 13:43:43.665 INFO [stderr]   --> src/main.rs:17:1
Dec 19 13:43:43.665 INFO [stderr]    |
Dec 19 13:43:43.665 INFO [stderr] 17 | fn main_loop(board: &Board, player: Face) -> () {
Dec 19 13:43:43.665 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ cannot return without recursing
Dec 19 13:43:43.665 INFO [stderr] ...
Dec 19 13:43:43.665 INFO [stderr] 22 |             main_loop(&b, player.not())
Dec 19 13:43:43.665 INFO [stderr]    |             --------------------------- recursive call site
Dec 19 13:43:43.665 INFO [stderr] ...
Dec 19 13:43:43.665 INFO [stderr] 26 |             main_loop(board, player)
Dec 19 13:43:43.665 INFO [stderr]    |             ------------------------ recursive call site
Dec 19 13:43:43.665 INFO [stderr]    |
Dec 19 13:43:43.665 INFO [stderr]    = note: #[warn(unconditional_recursion)] on by default
Dec 19 13:43:43.665 INFO [stderr]    = help: a `loop` may express intention better if this is on purpose
Dec 19 13:43:43.665 INFO [stderr] 
Dec 19 13:43:43.688 INFO [stderr] warning: method is never used: `count_bw`
Dec 19 13:43:43.689 INFO [stderr]   --> src/board.rs:81:5
Dec 19 13:43:43.689 INFO [stderr]    |
Dec 19 13:43:43.689 INFO [stderr] 81 |     pub fn count_bw(&self) -> (usize, usize) {
Dec 19 13:43:43.689 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 13:43:43.689 INFO [stderr]    |
Dec 19 13:43:43.689 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 19 13:43:43.689 INFO [stderr] 
Dec 19 13:43:43.689 INFO [stderr] warning: method is never used: `print_count`
Dec 19 13:43:43.689 INFO [stderr]   --> src/board.rs:96:5
Dec 19 13:43:43.689 INFO [stderr]    |
Dec 19 13:43:43.689 INFO [stderr] 96 |     pub fn print_count(&self) -> () {
Dec 19 13:43:43.689 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 13:43:43.689 INFO [stderr] 
Dec 19 13:43:43.689 INFO [stderr] warning: method is never used: `flip`
Dec 19 13:43:43.689 INFO [stderr]   --> src/face.rs:27:5
Dec 19 13:43:43.689 INFO [stderr]    |
Dec 19 13:43:43.689 INFO [stderr] 27 |     pub fn flip(&mut self) -> () {
Dec 19 13:43:43.689 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 13:43:43.689 INFO [stderr] 
Dec 19 13:43:43.748 INFO [stderr] warning: function cannot return without recursing
Dec 19 13:43:43.748 INFO [stderr]   --> src/main.rs:17:1
Dec 19 13:43:43.748 INFO [stderr]    |
Dec 19 13:43:43.748 INFO [stderr] 17 | fn main_loop(board: &Board, player: Face) -> () {
Dec 19 13:43:43.748 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ cannot return without recursing
Dec 19 13:43:43.748 INFO [stderr] ...
Dec 19 13:43:43.748 INFO [stderr] 22 |             main_loop(&b, player.not())
Dec 19 13:43:43.748 INFO [stderr]    |             --------------------------- recursive call site
Dec 19 13:43:43.748 INFO [stderr] ...
Dec 19 13:43:43.748 INFO [stderr] 26 |             main_loop(board, player)
Dec 19 13:43:43.748 INFO [stderr]    |             ------------------------ recursive call site
Dec 19 13:43:43.748 INFO [stderr]    |
Dec 19 13:43:43.748 INFO [stderr]    = note: #[warn(unconditional_recursion)] on by default
Dec 19 13:43:43.748 INFO [stderr]    = help: a `loop` may express intention better if this is on purpose
Dec 19 13:43:43.748 INFO [stderr] 
Dec 19 13:43:43.802 INFO [stderr] warning: method is never used: `count_bw`
Dec 19 13:43:43.802 INFO [stderr]   --> src/board.rs:81:5
Dec 19 13:43:43.802 INFO [stderr]    |
Dec 19 13:43:43.802 INFO [stderr] 81 |     pub fn count_bw(&self) -> (usize, usize) {
Dec 19 13:43:43.802 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 13:43:43.802 INFO [stderr]    |
Dec 19 13:43:43.802 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 19 13:43:43.802 INFO [stderr] 
Dec 19 13:43:43.802 INFO [stderr] warning: method is never used: `print_count`
Dec 19 13:43:43.802 INFO [stderr]   --> src/board.rs:96:5
Dec 19 13:43:43.802 INFO [stderr]    |
Dec 19 13:43:43.802 INFO [stderr] 96 |     pub fn print_count(&self) -> () {
Dec 19 13:43:43.802 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 13:43:43.802 INFO [stderr] 
Dec 19 13:43:43.802 INFO [stderr] warning: method is never used: `flip`
Dec 19 13:43:43.802 INFO [stderr]   --> src/face.rs:27:5
Dec 19 13:43:43.802 INFO [stderr]    |
Dec 19 13:43:43.802 INFO [stderr] 27 |     pub fn flip(&mut self) -> () {
Dec 19 13:43:43.802 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 13:43:43.802 INFO [stderr] 
Dec 19 13:43:43.849 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.51s
Dec 19 13:43:44.500 INFO running `"docker" "inspect" "ce3b06a40eb1b10c0800e07fd8a409fb8f6c803463bccb2b3cfa0ec6f4fe6aa6"`
Dec 19 13:43:44.698 INFO running `"docker" "rm" "-f" "ce3b06a40eb1b10c0800e07fd8a409fb8f6c803463bccb2b3cfa0ec6f4fe6aa6"`
Dec 19 13:43:44.870 INFO [stdout] ce3b06a40eb1b10c0800e07fd8a409fb8f6c803463bccb2b3cfa0ec6f4fe6aa6