Dec 18 03:28:11.783 INFO checking beatmadsen/chess against try#0b8c5828f68d7b2840b81fa51239346dc97fef5a for pr-54252
Dec 18 03:28:11.783 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-54252/worker-4/try#0b8c5828f68d7b2840b81fa51239346dc97fef5a:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-54252/sources/try#0b8c5828f68d7b2840b81fa51239346dc97fef5a/gh/beatmadsen/chess:/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 03:28:12.202 INFO [stdout] 2a174ac7e1bad27a8a170028f33fcfd8bd6d8851bac6bb32d430facb83b043b7
Dec 18 03:28:12.210 INFO running `"docker" "start" "-a" "2a174ac7e1bad27a8a170028f33fcfd8bd6d8851bac6bb32d430facb83b043b7"`
Dec 18 03:28:14.317 INFO [stderr]     Checking chess v0.1.0 (/opt/crater/workdir)
Dec 18 03:28:14.796 INFO [stderr] warning: struct is never constructed: `Pawn`
Dec 18 03:28:14.796 INFO [stderr]   --> src/piece.rs:16:1
Dec 18 03:28:14.796 INFO [stderr]    |
Dec 18 03:28:14.796 INFO [stderr] 16 | pub struct Pawn {}
Dec 18 03:28:14.797 INFO [stderr]    | ^^^^^^^^^^^^^^^
Dec 18 03:28:14.797 INFO [stderr]    |
Dec 18 03:28:14.797 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 18 03:28:14.797 INFO [stderr] 
Dec 18 03:28:14.797 INFO [stderr] warning: struct is never constructed: `Queen`
Dec 18 03:28:14.797 INFO [stderr]   --> src/piece.rs:17:1
Dec 18 03:28:14.797 INFO [stderr]    |
Dec 18 03:28:14.797 INFO [stderr] 17 | pub struct Queen {}
Dec 18 03:28:14.797 INFO [stderr]    | ^^^^^^^^^^^^^^^^
Dec 18 03:28:14.797 INFO [stderr] 
Dec 18 03:28:14.797 INFO [stderr] warning: struct is never constructed: `King`
Dec 18 03:28:14.797 INFO [stderr]   --> src/piece.rs:18:1
Dec 18 03:28:14.797 INFO [stderr]    |
Dec 18 03:28:14.797 INFO [stderr] 18 | pub struct King {}
Dec 18 03:28:14.797 INFO [stderr]    | ^^^^^^^^^^^^^^^
Dec 18 03:28:14.797 INFO [stderr] 
Dec 18 03:28:14.797 INFO [stderr] warning: struct is never constructed: `Knight`
Dec 18 03:28:14.797 INFO [stderr]   --> src/piece.rs:19:1
Dec 18 03:28:14.797 INFO [stderr]    |
Dec 18 03:28:14.797 INFO [stderr] 19 | pub struct Knight {}
Dec 18 03:28:14.797 INFO [stderr]    | ^^^^^^^^^^^^^^^^^
Dec 18 03:28:14.797 INFO [stderr] 
Dec 18 03:28:14.797 INFO [stderr] warning: struct is never constructed: `Rook`
Dec 18 03:28:14.797 INFO [stderr]   --> src/piece.rs:20:1
Dec 18 03:28:14.797 INFO [stderr]    |
Dec 18 03:28:14.797 INFO [stderr] 20 | pub struct Rook {}
Dec 18 03:28:14.797 INFO [stderr]    | ^^^^^^^^^^^^^^^
Dec 18 03:28:14.797 INFO [stderr] 
Dec 18 03:28:14.797 INFO [stderr] warning: struct is never constructed: `Square`
Dec 18 03:28:14.797 INFO [stderr]  --> src/square.rs:4:1
Dec 18 03:28:14.797 INFO [stderr]   |
Dec 18 03:28:14.797 INFO [stderr] 4 | pub struct Square {
Dec 18 03:28:14.797 INFO [stderr]   | ^^^^^^^^^^^^^^^^^
Dec 18 03:28:14.797 INFO [stderr] 
Dec 18 03:28:14.797 INFO [stderr] warning: method is never used: `legal_moves`
Dec 18 03:28:14.797 INFO [stderr]   --> src/square.rs:10:5
Dec 18 03:28:14.797 INFO [stderr]    |
Dec 18 03:28:14.797 INFO [stderr] 10 |     pub fn legal_moves(&self) -> Vec<(Name, Name)> {
Dec 18 03:28:14.797 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 03:28:14.797 INFO [stderr] 
Dec 18 03:28:14.797 INFO [stderr] warning: struct is never constructed: `Position`
Dec 18 03:28:14.797 INFO [stderr]   --> src/square.rs:19:1
Dec 18 03:28:14.797 INFO [stderr]    |
Dec 18 03:28:14.797 INFO [stderr] 19 | pub struct Position {
Dec 18 03:28:14.797 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^
Dec 18 03:28:14.797 INFO [stderr] 
Dec 18 03:28:14.797 INFO [stderr] warning: method is never used: `legal_moves`
Dec 18 03:28:14.797 INFO [stderr]   --> src/square.rs:24:5
Dec 18 03:28:14.797 INFO [stderr]    |
Dec 18 03:28:14.797 INFO [stderr] 24 |     pub fn legal_moves(&self) -> Vec<(Name, Name)> {
Dec 18 03:28:14.797 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 03:28:14.797 INFO [stderr] 
Dec 18 03:28:14.924 INFO [stderr] warning: struct is never constructed: `Pawn`
Dec 18 03:28:14.924 INFO [stderr]   --> src/piece.rs:16:1
Dec 18 03:28:14.924 INFO [stderr]    |
Dec 18 03:28:14.924 INFO [stderr] 16 | pub struct Pawn {}
Dec 18 03:28:14.924 INFO [stderr]    | ^^^^^^^^^^^^^^^
Dec 18 03:28:14.924 INFO [stderr]    |
Dec 18 03:28:14.924 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 18 03:28:14.924 INFO [stderr] 
Dec 18 03:28:14.924 INFO [stderr] warning: struct is never constructed: `Queen`
Dec 18 03:28:14.924 INFO [stderr]   --> src/piece.rs:17:1
Dec 18 03:28:14.924 INFO [stderr]    |
Dec 18 03:28:14.924 INFO [stderr] 17 | pub struct Queen {}
Dec 18 03:28:14.924 INFO [stderr]    | ^^^^^^^^^^^^^^^^
Dec 18 03:28:14.924 INFO [stderr] 
Dec 18 03:28:14.924 INFO [stderr] warning: struct is never constructed: `King`
Dec 18 03:28:14.924 INFO [stderr]   --> src/piece.rs:18:1
Dec 18 03:28:14.924 INFO [stderr]    |
Dec 18 03:28:14.924 INFO [stderr] 18 | pub struct King {}
Dec 18 03:28:14.924 INFO [stderr]    | ^^^^^^^^^^^^^^^
Dec 18 03:28:14.924 INFO [stderr] 
Dec 18 03:28:14.924 INFO [stderr] warning: struct is never constructed: `Knight`
Dec 18 03:28:14.924 INFO [stderr]   --> src/piece.rs:19:1
Dec 18 03:28:14.924 INFO [stderr]    |
Dec 18 03:28:14.924 INFO [stderr] 19 | pub struct Knight {}
Dec 18 03:28:14.924 INFO [stderr]    | ^^^^^^^^^^^^^^^^^
Dec 18 03:28:14.924 INFO [stderr] 
Dec 18 03:28:14.924 INFO [stderr] warning: struct is never constructed: `Rook`
Dec 18 03:28:14.924 INFO [stderr]   --> src/piece.rs:20:1
Dec 18 03:28:14.924 INFO [stderr]    |
Dec 18 03:28:14.924 INFO [stderr] 20 | pub struct Rook {}
Dec 18 03:28:14.924 INFO [stderr]    | ^^^^^^^^^^^^^^^
Dec 18 03:28:14.924 INFO [stderr] 
Dec 18 03:28:14.924 INFO [stderr] warning: struct is never constructed: `Square`
Dec 18 03:28:14.924 INFO [stderr]  --> src/square.rs:4:1
Dec 18 03:28:14.924 INFO [stderr]   |
Dec 18 03:28:14.924 INFO [stderr] 4 | pub struct Square {
Dec 18 03:28:14.924 INFO [stderr]   | ^^^^^^^^^^^^^^^^^
Dec 18 03:28:14.924 INFO [stderr] 
Dec 18 03:28:14.924 INFO [stderr] warning: method is never used: `legal_moves`
Dec 18 03:28:14.925 INFO [stderr]   --> src/square.rs:10:5
Dec 18 03:28:14.925 INFO [stderr]    |
Dec 18 03:28:14.925 INFO [stderr] 10 |     pub fn legal_moves(&self) -> Vec<(Name, Name)> {
Dec 18 03:28:14.925 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 03:28:14.925 INFO [stderr] 
Dec 18 03:28:14.925 INFO [stderr] warning: struct is never constructed: `Position`
Dec 18 03:28:14.925 INFO [stderr]   --> src/square.rs:19:1
Dec 18 03:28:14.925 INFO [stderr]    |
Dec 18 03:28:14.925 INFO [stderr] 19 | pub struct Position {
Dec 18 03:28:14.925 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^
Dec 18 03:28:14.925 INFO [stderr] 
Dec 18 03:28:14.925 INFO [stderr] warning: method is never used: `legal_moves`
Dec 18 03:28:14.925 INFO [stderr]   --> src/square.rs:24:5
Dec 18 03:28:14.925 INFO [stderr]    |
Dec 18 03:28:14.925 INFO [stderr] 24 |     pub fn legal_moves(&self) -> Vec<(Name, Name)> {
Dec 18 03:28:14.925 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 03:28:14.925 INFO [stderr] 
Dec 18 03:28:14.956 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.67s
Dec 18 03:28:15.678 INFO running `"docker" "inspect" "2a174ac7e1bad27a8a170028f33fcfd8bd6d8851bac6bb32d430facb83b043b7"`
Dec 18 03:28:15.998 INFO running `"docker" "rm" "-f" "2a174ac7e1bad27a8a170028f33fcfd8bd6d8851bac6bb32d430facb83b043b7"`
Dec 18 03:28:16.300 INFO [stdout] 2a174ac7e1bad27a8a170028f33fcfd8bd6d8851bac6bb32d430facb83b043b7