[INFO] updating cached repository spratt/russ
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/spratt/russ
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/spratt/russ" "work/ex/pr-59199/sources/master#bc44841ad2a2ad5f6c5e67b9e35ed8e7e71d4dc7/gh/spratt/russ"`
[INFO] [stderr] Cloning into 'work/ex/pr-59199/sources/master#bc44841ad2a2ad5f6c5e67b9e35ed8e7e71d4dc7/gh/spratt/russ'...
[INFO] [stderr] done.
[INFO] [stderr] Checking out files:  73% (11/15)   
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[INFO] running `"git" "clone" "work/cache/sources/gh/spratt/russ" "work/ex/pr-59199/sources/try#68fcf881bd1e4dbfc21e22f8c7a56b8a5d8e8f7b/gh/spratt/russ"`
[INFO] [stderr] Cloning into 'work/ex/pr-59199/sources/try#68fcf881bd1e4dbfc21e22f8c7a56b8a5d8e8f7b/gh/spratt/russ'...
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[INFO] [stderr] Checking out files:  80% (12/15)   
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[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] efa6ad7cd7f68771a5b4f5c0b145e1769419703c
[INFO] sha for GitHub repo spratt/russ: efa6ad7cd7f68771a5b4f5c0b145e1769419703c
[INFO] validating manifest of spratt/russ on toolchain master#bc44841ad2a2ad5f6c5e67b9e35ed8e7e71d4dc7
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+bc44841ad2a2ad5f6c5e67b9e35ed8e7e71d4dc7-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of spratt/russ on toolchain try#68fcf881bd1e4dbfc21e22f8c7a56b8a5d8e8f7b
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+68fcf881bd1e4dbfc21e22f8c7a56b8a5d8e8f7b-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing spratt/russ
[INFO] finished frobbing spratt/russ
[INFO] frobbed toml for spratt/russ written to work/ex/pr-59199/sources/master#bc44841ad2a2ad5f6c5e67b9e35ed8e7e71d4dc7/gh/spratt/russ/Cargo.toml
[INFO] started frobbing spratt/russ
[INFO] finished frobbing spratt/russ
[INFO] frobbed toml for spratt/russ written to work/ex/pr-59199/sources/try#68fcf881bd1e4dbfc21e22f8c7a56b8a5d8e8f7b/gh/spratt/russ/Cargo.toml
[INFO] crate spratt/russ already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+bc44841ad2a2ad5f6c5e67b9e35ed8e7e71d4dc7-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr] error: the lock file /mnt/crater-raid/crater/work/ex/pr-59199/sources/master#bc44841ad2a2ad5f6c5e67b9e35ed8e7e71d4dc7/gh/spratt/russ/Cargo.lock needs to be updated but --locked was passed to prevent this
[INFO] the lockfile is outdated, regenerating it
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+bc44841ad2a2ad5f6c5e67b9e35ed8e7e71d4dc7-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+68fcf881bd1e4dbfc21e22f8c7a56b8a5d8e8f7b-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+bc44841ad2a2ad5f6c5e67b9e35ed8e7e71d4dc7-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+68fcf881bd1e4dbfc21e22f8c7a56b8a5d8e8f7b-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking spratt/russ against master#bc44841ad2a2ad5f6c5e67b9e35ed8e7e71d4dc7 for pr-59199
[INFO] running `"docker" "create" "-v" "/mnt/crater-raid/crater/work/local/target-dirs/pr-59199/worker-6/master#bc44841ad2a2ad5f6c5e67b9e35ed8e7e71d4dc7:/opt/crater/target:rw,Z" "-v" "/mnt/crater-raid/crater/work/ex/pr-59199/sources/master#bc44841ad2a2ad5f6c5e67b9e35ed8e7e71d4dc7/gh/spratt/russ:/opt/crater/workdir:ro,Z" "-v" "/mnt/crater-raid/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/crater-raid/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" "+bc44841ad2a2ad5f6c5e67b9e35ed8e7e71d4dc7-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 2c732e6e185d18df1f405359996c542f621e2d7015b923c568a1c115065ef7ee
[INFO] running `"docker" "start" "-a" "2c732e6e185d18df1f405359996c542f621e2d7015b923c568a1c115065ef7ee"`
[INFO] [stderr]     Checking russ v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused variable: `player`
[INFO] [stderr]    --> src/chess.rs:369:31
[INFO] [stderr]     |
[INFO] [stderr] 369 |     fn find_all_pieces(&self, player: Player, piece: Piece) -> Vec<Posn> {
[INFO] [stderr]     |                               ^^^^^^ help: consider prefixing with an underscore: `_player`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `piece`
[INFO] [stderr]    --> src/chess.rs:369:47
[INFO] [stderr]     |
[INFO] [stderr] 369 |     fn find_all_pieces(&self, player: Player, piece: Piece) -> Vec<Posn> {
[INFO] [stderr]     |                                               ^^^^^ help: consider prefixing with an underscore: `_piece`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `player`
[INFO] [stderr]    --> src/chess.rs:374:35
[INFO] [stderr]     |
[INFO] [stderr] 374 |     fn find_piece_location(&self, player: Player, mov: Move) -> Option<Posn> {
[INFO] [stderr]     |                                   ^^^^^^ help: consider prefixing with an underscore: `_player`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `mov`
[INFO] [stderr]    --> src/chess.rs:374:51
[INFO] [stderr]     |
[INFO] [stderr] 374 |     fn find_piece_location(&self, player: Player, mov: Move) -> Option<Posn> {
[INFO] [stderr]     |                                                   ^^^ help: consider prefixing with an underscore: `_mov`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `player`
[INFO] [stderr]    --> src/chess.rs:369:31
[INFO] [stderr]     |
[INFO] [stderr] 369 |     fn find_all_pieces(&self, player: Player, piece: Piece) -> Vec<Posn> {
[INFO] [stderr]     |                               ^^^^^^ help: consider prefixing with an underscore: `_player`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `piece`
[INFO] [stderr]    --> src/chess.rs:369:47
[INFO] [stderr]     |
[INFO] [stderr] 369 |     fn find_all_pieces(&self, player: Player, piece: Piece) -> Vec<Posn> {
[INFO] [stderr]     |                                               ^^^^^ help: consider prefixing with an underscore: `_piece`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `player`
[INFO] [stderr]    --> src/chess.rs:374:35
[INFO] [stderr]     |
[INFO] [stderr] 374 |     fn find_piece_location(&self, player: Player, mov: Move) -> Option<Posn> {
[INFO] [stderr]     |                                   ^^^^^^ help: consider prefixing with an underscore: `_player`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `mov`
[INFO] [stderr]    --> src/chess.rs:374:51
[INFO] [stderr]     |
[INFO] [stderr] 374 |     fn find_piece_location(&self, player: Player, mov: Move) -> Option<Posn> {
[INFO] [stderr]     |                                                   ^^^ help: consider prefixing with an underscore: `_mov`
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Rook`
[INFO] [stderr]  --> src/chess.rs:6:5
[INFO] [stderr]   |
[INFO] [stderr] 6 |     Rook,
[INFO] [stderr]   |     ^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Knight`
[INFO] [stderr]  --> src/chess.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 |     Knight,
[INFO] [stderr]   |     ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Bishop`
[INFO] [stderr]  --> src/chess.rs:8:5
[INFO] [stderr]   |
[INFO] [stderr] 8 |     Bishop,
[INFO] [stderr]   |     ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Queen`
[INFO] [stderr]  --> src/chess.rs:9:5
[INFO] [stderr]   |
[INFO] [stderr] 9 |     Queen,
[INFO] [stderr]   |     ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `King`
[INFO] [stderr]   --> src/chess.rs:10:5
[INFO] [stderr]    |
[INFO] [stderr] 10 |     King,
[INFO] [stderr]    |     ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Pawn`
[INFO] [stderr]   --> src/chess.rs:11:5
[INFO] [stderr]    |
[INFO] [stderr] 11 |     Pawn,
[INFO] [stderr]    |     ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `to_char`
[INFO] [stderr]   --> src/chess.rs:15:5
[INFO] [stderr]    |
[INFO] [stderr] 15 |     fn to_char(&self) -> char {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `from`
[INFO] [stderr]   --> src/chess.rs:26:5
[INFO] [stderr]    |
[INFO] [stderr] 26 |     fn from(c: char) -> Option<Piece> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Queenside`
[INFO] [stderr]   --> src/chess.rs:53:5
[INFO] [stderr]    |
[INFO] [stderr] 53 |     Queenside,
[INFO] [stderr]    |     ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Kingside`
[INFO] [stderr]   --> src/chess.rs:54:5
[INFO] [stderr]    |
[INFO] [stderr] 54 |     Kingside,
[INFO] [stderr]    |     ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `to_str`
[INFO] [stderr]   --> src/chess.rs:58:5
[INFO] [stderr]    |
[INFO] [stderr] 58 |     fn to_str(&self) -> String {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `from_str`
[INFO] [stderr]   --> src/chess.rs:65:5
[INFO] [stderr]    |
[INFO] [stderr] 65 |     fn from_str(s: String) -> Option<Castle> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]    --> src/chess.rs:102:5
[INFO] [stderr]     |
[INFO] [stderr] 102 |     fn new() -> Move {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `from`
[INFO] [stderr]    --> src/chess.rs:117:5
[INFO] [stderr]     |
[INFO] [stderr] 117 |     pub fn from(mov_str: &String) -> Move {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `to_str`
[INFO] [stderr]    --> src/chess.rs:184:5
[INFO] [stderr]     |
[INFO] [stderr] 184 |     pub fn to_str(&self) -> String {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `from`
[INFO] [stderr]    --> src/chess.rs:302:5
[INFO] [stderr]     |
[INFO] [stderr] 302 |     fn from(s: &String) -> Posn {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: enum is never used: `Player`
[INFO] [stderr]    --> src/chess.rs:316:1
[INFO] [stderr]     |
[INFO] [stderr] 316 | pub enum Player {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]    --> src/chess.rs:327:5
[INFO] [stderr]     |
[INFO] [stderr] 327 |     pub fn new() -> State {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `col_from_file`
[INFO] [stderr]    --> src/chess.rs:341:5
[INFO] [stderr]     |
[INFO] [stderr] 341 |     fn col_from_file(f: &char) -> Option<usize> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `row_from_rank`
[INFO] [stderr]    --> src/chess.rs:355:5
[INFO] [stderr]     |
[INFO] [stderr] 355 |     fn row_from_rank(r: &i8) -> Option<usize> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `find_all_pieces`
[INFO] [stderr]    --> src/chess.rs:369:5
[INFO] [stderr]     |
[INFO] [stderr] 369 |     fn find_all_pieces(&self, player: Player, piece: Piece) -> Vec<Posn> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `find_piece_location`
[INFO] [stderr]    --> src/chess.rs:374:5
[INFO] [stderr]     |
[INFO] [stderr] 374 |     fn find_piece_location(&self, player: Player, mov: Move) -> Option<Posn> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `make_move`
[INFO] [stderr]    --> src/chess.rs:379:5
[INFO] [stderr]     |
[INFO] [stderr] 379 |     pub fn make_move(&self, player: Player, mov: Move) -> Option<State> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `move_piece`
[INFO] [stderr]    --> src/chess.rs:388:5
[INFO] [stderr]     |
[INFO] [stderr] 388 |     fn move_piece(&self, from: Posn, to: Posn) -> State {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: enum is never used: `Player`
[INFO] [stderr]    --> src/chess.rs:316:1
[INFO] [stderr]     |
[INFO] [stderr] 316 | pub enum Player {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `find_all_pieces`
[INFO] [stderr]    --> src/chess.rs:369:5
[INFO] [stderr]     |
[INFO] [stderr] 369 |     fn find_all_pieces(&self, player: Player, piece: Piece) -> Vec<Posn> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `find_piece_location`
[INFO] [stderr]    --> src/chess.rs:374:5
[INFO] [stderr]     |
[INFO] [stderr] 374 |     fn find_piece_location(&self, player: Player, mov: Move) -> Option<Posn> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `make_move`
[INFO] [stderr]    --> src/chess.rs:379:5
[INFO] [stderr]     |
[INFO] [stderr] 379 |     pub fn make_move(&self, player: Player, mov: Move) -> Option<State> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.82s
[INFO] running `"docker" "inspect" "2c732e6e185d18df1f405359996c542f621e2d7015b923c568a1c115065ef7ee"`
[INFO] running `"docker" "rm" "-f" "2c732e6e185d18df1f405359996c542f621e2d7015b923c568a1c115065ef7ee"`
[INFO] [stdout] 2c732e6e185d18df1f405359996c542f621e2d7015b923c568a1c115065ef7ee