[INFO] cloning repository https://github.com/kyrod/rust_chess
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/kyrod/rust_chess" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkyrod%2Frust_chess", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkyrod%2Frust_chess'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 7c9ae8c97b8cdd6d758f099881da0ff5aa9cc333
[INFO] checking kyrod/rust_chess against try#5de9e0e6cf775e94e0de2003f35e183f3f77bfe8 for pr-143808
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkyrod%2Frust_chess" "/workspace/builds/worker-3-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/kyrod/rust_chess
[INFO] finished tweaking git repo https://github.com/kyrod/rust_chess
[INFO] tweaked toml for git repo https://github.com/kyrod/rust_chess written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/kyrod/rust_chess on toolchain 5de9e0e6cf775e94e0de2003f35e183f3f77bfe8
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+5de9e0e6cf775e94e0de2003f35e183f3f77bfe8" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/kyrod/rust_chess already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+5de9e0e6cf775e94e0de2003f35e183f3f77bfe8" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[ERROR] error running command: no output for 300 seconds
[INFO] checking kyrod/rust_chess against try#5de9e0e6cf775e94e0de2003f35e183f3f77bfe8 for pr-143808
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkyrod%2Frust_chess" "/workspace/builds/worker-3-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/kyrod/rust_chess
[INFO] finished tweaking git repo https://github.com/kyrod/rust_chess
[INFO] tweaked toml for git repo https://github.com/kyrod/rust_chess written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/kyrod/rust_chess on toolchain 5de9e0e6cf775e94e0de2003f35e183f3f77bfe8
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+5de9e0e6cf775e94e0de2003f35e183f3f77bfe8" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/kyrod/rust_chess already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+5de9e0e6cf775e94e0de2003f35e183f3f77bfe8" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:cf8efcab8866f2cf4285301c7418e2f4f2a9b088c91ba69c40d5b659f81557f7" "/opt/rustwide/cargo-home/bin/cargo" "+5de9e0e6cf775e94e0de2003f35e183f3f77bfe8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 3ba807112ebf898adc359c3a532f9b739ef4f743d22fc20c84e41558be3f46bb
[INFO] running `Command { std: "docker" "start" "-a" "3ba807112ebf898adc359c3a532f9b739ef4f743d22fc20c84e41558be3f46bb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3ba807112ebf898adc359c3a532f9b739ef4f743d22fc20c84e41558be3f46bb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3ba807112ebf898adc359c3a532f9b739ef4f743d22fc20c84e41558be3f46bb", kill_on_drop: false }`
[INFO] [stdout] 3ba807112ebf898adc359c3a532f9b739ef4f743d22fc20c84e41558be3f46bb
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:cf8efcab8866f2cf4285301c7418e2f4f2a9b088c91ba69c40d5b659f81557f7" "/opt/rustwide/cargo-home/bin/cargo" "+5de9e0e6cf775e94e0de2003f35e183f3f77bfe8" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 57464824e9f1553bc6988b2b0a77edc466350045a833064767812b612c524419
[INFO] running `Command { std: "docker" "start" "-a" "57464824e9f1553bc6988b2b0a77edc466350045a833064767812b612c524419", kill_on_drop: false }`
[INFO] [stderr]     Checking rust_chess v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `piece`
[INFO] [stdout]    --> src/engine/board.rs:292:35
[INFO] [stdout]     |
[INFO] [stdout] 292 |     fn update_castling(&mut self, piece: Piece, location: (usize, usize), target: (usize, usize)) {
[INFO] [stdout]     |                                   ^^^^^ help: if this is intentional, prefix it with an underscore: `_piece`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `location`
[INFO] [stdout]    --> src/engine/board.rs:292:49
[INFO] [stdout]     |
[INFO] [stdout] 292 |     fn update_castling(&mut self, piece: Piece, location: (usize, usize), target: (usize, usize)) {
[INFO] [stdout]     |                                                 ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_location`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `target`
[INFO] [stdout]    --> src/engine/board.rs:292:75
[INFO] [stdout]     |
[INFO] [stdout] 292 |     fn update_castling(&mut self, piece: Piece, location: (usize, usize), target: (usize, usize)) {
[INFO] [stdout]     |                                                                           ^^^^^^ help: if this is intentional, prefix it with an underscore: `_target`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `piece`
[INFO] [stdout]    --> src/engine/board.rs:298:9
[INFO] [stdout]     |
[INFO] [stdout] 298 |         piece: Piece,
[INFO] [stdout]     |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_piece`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `location`
[INFO] [stdout]    --> src/engine/board.rs:299:9
[INFO] [stdout]     |
[INFO] [stdout] 299 |         location: (usize, usize),
[INFO] [stdout]     |         ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_location`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `target`
[INFO] [stdout]    --> src/engine/board.rs:300:9
[INFO] [stdout]     |
[INFO] [stdout] 300 |         target: (usize, usize),
[INFO] [stdout]     |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_target`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `m`
[INFO] [stdout]   --> src/main.rs:29:13
[INFO] [stdout]    |
[INFO] [stdout] 29 |         for m in l {
[INFO] [stdout]    |             ^ help: if this is intentional, prefix it with an underscore: `_m`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `en_passant` is never read
[INFO] [stdout]   --> src/engine/board.rs:15:9
[INFO] [stdout]    |
[INFO] [stdout] 9  | pub struct Board {
[INFO] [stdout]    |            ----- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 15 |     pub en_passant: (char, char),
[INFO] [stdout]    |         ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Board` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `get_castling`, `get_en_passant`, `from_fen`, `pieces_from_fen`, and `to_FEN` are never used
[INFO] [stdout]    --> src/engine/board.rs:94:8
[INFO] [stdout]     |
[INFO] [stdout] 52  | impl Board {
[INFO] [stdout]     | ---------- associated items in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 94  |     fn get_castling(s: String) -> [char; 4] {
[INFO] [stdout]     |        ^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 112 |     fn get_en_passant(string: String) -> (char, char) {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 121 |     pub fn from_fen(string: String) -> Board {
[INFO] [stdout]     |            ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 162 |     pub fn pieces_from_fen(pieces: String) -> [[Piece; 8]; 8] {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 183 |     pub fn to_FEN(self) {
[INFO] [stdout]     |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `from_char` is never used
[INFO] [stdout]    --> src/engine/piece.rs:148:12
[INFO] [stdout]     |
[INFO] [stdout] 90  | impl Piece {
[INFO] [stdout]     | ---------- associated function in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 148 |     pub fn from_char(c: char) -> Piece {
[INFO] [stdout]     |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `to_FEN` should have a snake case name
[INFO] [stdout]    --> src/engine/board.rs:183:12
[INFO] [stdout]     |
[INFO] [stdout] 183 |     pub fn to_FEN(self) {
[INFO] [stdout]     |            ^^^^^^ help: convert the identifier to snake case: `to_fen`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `piece`
[INFO] [stdout]    --> src/engine/board.rs:292:35
[INFO] [stdout]     |
[INFO] [stdout] 292 |     fn update_castling(&mut self, piece: Piece, location: (usize, usize), target: (usize, usize)) {
[INFO] [stdout]     |                                   ^^^^^ help: if this is intentional, prefix it with an underscore: `_piece`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `location`
[INFO] [stdout]    --> src/engine/board.rs:292:49
[INFO] [stdout]     |
[INFO] [stdout] 292 |     fn update_castling(&mut self, piece: Piece, location: (usize, usize), target: (usize, usize)) {
[INFO] [stdout]     |                                                 ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_location`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `target`
[INFO] [stdout]    --> src/engine/board.rs:292:75
[INFO] [stdout]     |
[INFO] [stdout] 292 |     fn update_castling(&mut self, piece: Piece, location: (usize, usize), target: (usize, usize)) {
[INFO] [stdout]     |                                                                           ^^^^^^ help: if this is intentional, prefix it with an underscore: `_target`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `piece`
[INFO] [stdout]    --> src/engine/board.rs:298:9
[INFO] [stdout]     |
[INFO] [stdout] 298 |         piece: Piece,
[INFO] [stdout]     |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_piece`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `location`
[INFO] [stdout]    --> src/engine/board.rs:299:9
[INFO] [stdout]     |
[INFO] [stdout] 299 |         location: (usize, usize),
[INFO] [stdout]     |         ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_location`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `target`
[INFO] [stdout]    --> src/engine/board.rs:300:9
[INFO] [stdout]     |
[INFO] [stdout] 300 |         target: (usize, usize),
[INFO] [stdout]     |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_target`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `m`
[INFO] [stdout]   --> src/main.rs:29:13
[INFO] [stdout]    |
[INFO] [stdout] 29 |         for m in l {
[INFO] [stdout]    |             ^ help: if this is intentional, prefix it with an underscore: `_m`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `en_passant` is never read
[INFO] [stdout]   --> src/engine/board.rs:15:9
[INFO] [stdout]    |
[INFO] [stdout] 9  | pub struct Board {
[INFO] [stdout]    |            ----- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 15 |     pub en_passant: (char, char),
[INFO] [stdout]    |         ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Board` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `to_FEN` is never used
[INFO] [stdout]    --> src/engine/board.rs:183:12
[INFO] [stdout]     |
[INFO] [stdout] 52  | impl Board {
[INFO] [stdout]     | ---------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 183 |     pub fn to_FEN(self) {
[INFO] [stdout]     |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `to_FEN` should have a snake case name
[INFO] [stdout]    --> src/engine/board.rs:183:12
[INFO] [stdout]     |
[INFO] [stdout] 183 |     pub fn to_FEN(self) {
[INFO] [stdout]     |            ^^^^^^ help: convert the identifier to snake case: `to_fen`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.15s
[INFO] running `Command { std: "docker" "inspect" "57464824e9f1553bc6988b2b0a77edc466350045a833064767812b612c524419", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "57464824e9f1553bc6988b2b0a77edc466350045a833064767812b612c524419", kill_on_drop: false }`
[INFO] [stdout] 57464824e9f1553bc6988b2b0a77edc466350045a833064767812b612c524419