[INFO] updating cached repository jpoler/riddle-io-conways-game-of-life-and-death
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/jpoler/riddle-io-conways-game-of-life-and-death
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/jpoler/riddle-io-conways-game-of-life-and-death" "work/ex/pr-60039-1/sources/master#e305df1846a6d985315917ae0c81b74af8b4e641/gh/jpoler/riddle-io-conways-game-of-life-and-death"`
[INFO] [stderr] Cloning into 'work/ex/pr-60039-1/sources/master#e305df1846a6d985315917ae0c81b74af8b4e641/gh/jpoler/riddle-io-conways-game-of-life-and-death'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/jpoler/riddle-io-conways-game-of-life-and-death" "work/ex/pr-60039-1/sources/try#99a7498759a22b5684caf798a98b7e90ad9d2443/gh/jpoler/riddle-io-conways-game-of-life-and-death"`
[INFO] [stderr] Cloning into 'work/ex/pr-60039-1/sources/try#99a7498759a22b5684caf798a98b7e90ad9d2443/gh/jpoler/riddle-io-conways-game-of-life-and-death'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] b199b1cead2b2a77cd0af79097622a6b371cc6e7
[INFO] sha for GitHub repo jpoler/riddle-io-conways-game-of-life-and-death: b199b1cead2b2a77cd0af79097622a6b371cc6e7
[INFO] validating manifest of jpoler/riddle-io-conways-game-of-life-and-death on toolchain master#e305df1846a6d985315917ae0c81b74af8b4e641
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+e305df1846a6d985315917ae0c81b74af8b4e641-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of jpoler/riddle-io-conways-game-of-life-and-death on toolchain try#99a7498759a22b5684caf798a98b7e90ad9d2443
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+99a7498759a22b5684caf798a98b7e90ad9d2443-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing jpoler/riddle-io-conways-game-of-life-and-death
[INFO] finished frobbing jpoler/riddle-io-conways-game-of-life-and-death
[INFO] frobbed toml for jpoler/riddle-io-conways-game-of-life-and-death written to work/ex/pr-60039-1/sources/master#e305df1846a6d985315917ae0c81b74af8b4e641/gh/jpoler/riddle-io-conways-game-of-life-and-death/Cargo.toml
[INFO] started frobbing jpoler/riddle-io-conways-game-of-life-and-death
[INFO] finished frobbing jpoler/riddle-io-conways-game-of-life-and-death
[INFO] frobbed toml for jpoler/riddle-io-conways-game-of-life-and-death written to work/ex/pr-60039-1/sources/try#99a7498759a22b5684caf798a98b7e90ad9d2443/gh/jpoler/riddle-io-conways-game-of-life-and-death/Cargo.toml
[INFO] crate jpoler/riddle-io-conways-game-of-life-and-death already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+e305df1846a6d985315917ae0c81b74af8b4e641-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+99a7498759a22b5684caf798a98b7e90ad9d2443-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking jpoler/riddle-io-conways-game-of-life-and-death against try#99a7498759a22b5684caf798a98b7e90ad9d2443 for pr-60039-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-60039-1/worker-3/try#99a7498759a22b5684caf798a98b7e90ad9d2443:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-60039-1/sources/try#99a7498759a22b5684caf798a98b7e90ad9d2443/gh/jpoler/riddle-io-conways-game-of-life-and-death:/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" "+99a7498759a22b5684caf798a98b7e90ad9d2443-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] cc02e44e8515e0b5206386a590e2bd32fbfc483c162da3ea55eaa9ef5ab99366
[INFO] running `"docker" "start" "-a" "cc02e44e8515e0b5206386a590e2bd32fbfc483c162da3ea55eaa9ef5ab99366"`
[INFO] [stderr]     Checking game-of-life-and-death v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused import: `BufRead`
[INFO] [stderr]  --> src/main.rs:5:21
[INFO] [stderr]   |
[INFO] [stderr] 5 | use std::io::{self, BufRead};
[INFO] [stderr]   |                     ^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `BufRead`
[INFO] [stderr]  --> src/main.rs:5:21
[INFO] [stderr]   |
[INFO] [stderr] 5 | use std::io::{self, BufRead};
[INFO] [stderr]   |                     ^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `action`
[INFO] [stderr]   --> src/main.rs:24:33
[INFO] [stderr]    |
[INFO] [stderr] 24 |                 Message::Action(action) => {
[INFO] [stderr]    |                                 ^^^^^^ help: consider prefixing with an underscore: `_action`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `rc_coordinate`
[INFO] [stderr]   --> src/board.rs:41:5
[INFO] [stderr]    |
[INFO] [stderr] 41 |     fn rc_coordinate(&self, r: usize, c: usize) -> Option<Square> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `xy_coordinate`
[INFO] [stderr]   --> src/board.rs:49:5
[INFO] [stderr]    |
[INFO] [stderr] 49 |     fn xy_coordinate(&self, x: usize, y: usize) -> Option<Square> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Empty`
[INFO] [stderr]   --> src/types.rs:15:5
[INFO] [stderr]    |
[INFO] [stderr] 15 |     Empty,
[INFO] [stderr]    |     ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Move`
[INFO] [stderr]   --> src/types.rs:19:5
[INFO] [stderr]    |
[INFO] [stderr] 19 |     Move(Move),
[INFO] [stderr]    |     ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `action`
[INFO] [stderr]   --> src/main.rs:24:33
[INFO] [stderr]    |
[INFO] [stderr] 24 |                 Message::Action(action) => {
[INFO] [stderr]    |                                 ^^^^^^ help: consider prefixing with an underscore: `_action`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Empty`
[INFO] [stderr]   --> src/types.rs:15:5
[INFO] [stderr]    |
[INFO] [stderr] 15 |     Empty,
[INFO] [stderr]    |     ^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Move`
[INFO] [stderr]   --> src/types.rs:19:5
[INFO] [stderr]    |
[INFO] [stderr] 19 |     Move(Move),
[INFO] [stderr]    |     ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.95s
[INFO] running `"docker" "inspect" "cc02e44e8515e0b5206386a590e2bd32fbfc483c162da3ea55eaa9ef5ab99366"`
[INFO] running `"docker" "rm" "-f" "cc02e44e8515e0b5206386a590e2bd32fbfc483c162da3ea55eaa9ef5ab99366"`
[INFO] [stdout] cc02e44e8515e0b5206386a590e2bd32fbfc483c162da3ea55eaa9ef5ab99366