[INFO] updating cached repository mylesmegyesi/tic-tac-toe-rust
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/mylesmegyesi/tic-tac-toe-rust
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/mylesmegyesi/tic-tac-toe-rust" "work/ex/pr-60162/sources/master#a850a426491e14186af2250549bf41256b5938d2/gh/mylesmegyesi/tic-tac-toe-rust"`
[INFO] [stderr] Cloning into 'work/ex/pr-60162/sources/master#a850a426491e14186af2250549bf41256b5938d2/gh/mylesmegyesi/tic-tac-toe-rust'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/mylesmegyesi/tic-tac-toe-rust" "work/ex/pr-60162/sources/try#06a150c7d11500b41499224f165e9de1de096768/gh/mylesmegyesi/tic-tac-toe-rust"`
[INFO] [stderr] Cloning into 'work/ex/pr-60162/sources/try#06a150c7d11500b41499224f165e9de1de096768/gh/mylesmegyesi/tic-tac-toe-rust'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 89bcb3adf82cda91b5907cc4b0b272fd86ce3eea
[INFO] sha for GitHub repo mylesmegyesi/tic-tac-toe-rust: 89bcb3adf82cda91b5907cc4b0b272fd86ce3eea
[INFO] validating manifest of mylesmegyesi/tic-tac-toe-rust on toolchain master#a850a426491e14186af2250549bf41256b5938d2
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+a850a426491e14186af2250549bf41256b5938d2-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of mylesmegyesi/tic-tac-toe-rust on toolchain try#06a150c7d11500b41499224f165e9de1de096768
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+06a150c7d11500b41499224f165e9de1de096768-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing mylesmegyesi/tic-tac-toe-rust
[INFO] finished frobbing mylesmegyesi/tic-tac-toe-rust
[INFO] frobbed toml for mylesmegyesi/tic-tac-toe-rust written to work/ex/pr-60162/sources/master#a850a426491e14186af2250549bf41256b5938d2/gh/mylesmegyesi/tic-tac-toe-rust/Cargo.toml
[INFO] started frobbing mylesmegyesi/tic-tac-toe-rust
[INFO] finished frobbing mylesmegyesi/tic-tac-toe-rust
[INFO] frobbed toml for mylesmegyesi/tic-tac-toe-rust written to work/ex/pr-60162/sources/try#06a150c7d11500b41499224f165e9de1de096768/gh/mylesmegyesi/tic-tac-toe-rust/Cargo.toml
[INFO] crate mylesmegyesi/tic-tac-toe-rust already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+a850a426491e14186af2250549bf41256b5938d2-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr] error: the lock file /mnt/crater-raid/crater/work/ex/pr-60162/sources/master#a850a426491e14186af2250549bf41256b5938d2/gh/mylesmegyesi/tic-tac-toe-rust/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" "+a850a426491e14186af2250549bf41256b5938d2-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+06a150c7d11500b41499224f165e9de1de096768-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+a850a426491e14186af2250549bf41256b5938d2-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+06a150c7d11500b41499224f165e9de1de096768-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking mylesmegyesi/tic-tac-toe-rust against master#a850a426491e14186af2250549bf41256b5938d2 for pr-60162
[INFO] running `"docker" "create" "-v" "/mnt/crater-raid/crater/work/local/target-dirs/pr-60162/worker-2/master#a850a426491e14186af2250549bf41256b5938d2:/opt/crater/target:rw,Z" "-v" "/mnt/crater-raid/crater/work/ex/pr-60162/sources/master#a850a426491e14186af2250549bf41256b5938d2/gh/mylesmegyesi/tic-tac-toe-rust:/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" "+a850a426491e14186af2250549bf41256b5938d2-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] f1245b7dfcd577e3cf0a122f8f943e1b974eee4da84bba77cb3cc7ffaee33a38
[INFO] running `"docker" "start" "-a" "f1245b7dfcd577e3cf0a122f8f943e1b974eee4da84bba77cb3cc7ffaee33a38"`
[INFO] [stderr]     Checking tic-tac-toe-rust v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] error[E0506]: cannot assign to `board` because it is borrowed
[INFO] [stderr]   --> src/lib.rs:21:17
[INFO] [stderr]    |
[INFO] [stderr] 12 | fn play_game<'players>(player_one: &'players Box<dyn Player>, player_two: &'players Box<dyn Player>) -> GameState<'players> {
[INFO] [stderr]    |              -------- lifetime `'players` defined here
[INFO] [stderr] ...
[INFO] [stderr] 20 |                 let player_move = current_player.get_move(opposing_player, &board);
[INFO] [stderr]    |                                                                            ------ borrow of `board` occurs here
[INFO] [stderr] 21 |                 board = board.occupy_cell(current_player, player_move);
[INFO] [stderr]    |                 ^^^^^ assignment to borrowed `board` occurs here
[INFO] [stderr] ...
[INFO] [stderr] 26 |             game_state => return game_state
[INFO] [stderr]    |                                  ---------- returning this value requires that `board` is borrowed for `'players`
[INFO] [stderr] 
[INFO] [stderr] error[E0515]: cannot return value referencing local variable `board`
[INFO] [stderr]   --> src/lib.rs:26:34
[INFO] [stderr]    |
[INFO] [stderr] 20 |                 let player_move = current_player.get_move(opposing_player, &board);
[INFO] [stderr]    |                                                                            ------ `board` is borrowed here
[INFO] [stderr] ...
[INFO] [stderr] 26 |             game_state => return game_state
[INFO] [stderr]    |                                  ^^^^^^^^^^ returns a value referencing data owned by the current function
[INFO] [stderr] 
[INFO] [stderr] error[E0515]: cannot return value referencing local variable `board`
[INFO] [stderr]   --> src/lib.rs:26:34
[INFO] [stderr]    |
[INFO] [stderr] 21 |                 board = board.occupy_cell(current_player, player_move);
[INFO] [stderr]    |                         ----- `board` is borrowed here
[INFO] [stderr] ...
[INFO] [stderr] 26 |             game_state => return game_state
[INFO] [stderr]    |                                  ^^^^^^^^^^ returns a value referencing data owned by the current function
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 3 previous errors
[INFO] [stderr] 
[INFO] [stderr] Some errors have detailed explanations: E0506, E0515.
[INFO] [stderr] For more information about an error, try `rustc --explain E0506`.
[INFO] [stderr] error: Could not compile `tic-tac-toe-rust`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] warning: unused variable: `index`
[INFO] [stderr]    --> src/board.rs:124:23
[INFO] [stderr]     |
[INFO] [stderr] 124 |             .filter(|(index, c)| c.occupant.is_none())
[INFO] [stderr]     |                       ^^^^^ help: consider prefixing with an underscore: `_index`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `cell`
[INFO] [stderr]   --> src/mock_player.rs:34:28
[INFO] [stderr]    |
[INFO] [stderr] 34 |             .find(|(index, cell)| *index == move_index)
[INFO] [stderr]    |                            ^^^^ help: consider prefixing with an underscore: `_cell`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `other_player`
[INFO] [stderr]   --> src/mock_player.rs:30:31
[INFO] [stderr]    |
[INFO] [stderr] 30 |     fn get_move<'a>(&'a self, other_player: &'a Box<dyn Player>, board: &'a Board) -> &'a CellReference {
[INFO] [stderr]    |                               ^^^^^^^^^^^^ help: consider prefixing with an underscore: `_other_player`
[INFO] [stderr] 
[INFO] [stderr] error[E0506]: cannot assign to `board` because it is borrowed
[INFO] [stderr]   --> src/lib.rs:21:17
[INFO] [stderr]    |
[INFO] [stderr] 12 | fn play_game<'players>(player_one: &'players Box<dyn Player>, player_two: &'players Box<dyn Player>) -> GameState<'players> {
[INFO] [stderr]    |              -------- lifetime `'players` defined here
[INFO] [stderr] ...
[INFO] [stderr] 20 |                 let player_move = current_player.get_move(opposing_player, &board);
[INFO] [stderr]    |                                                                            ------ borrow of `board` occurs here
[INFO] [stderr] 21 |                 board = board.occupy_cell(current_player, player_move);
[INFO] [stderr]    |                 ^^^^^ assignment to borrowed `board` occurs here
[INFO] [stderr] ...
[INFO] [stderr] 26 |             game_state => return game_state
[INFO] [stderr]    |                                  ---------- returning this value requires that `board` is borrowed for `'players`
[INFO] [stderr] 
[INFO] [stderr] error[E0515]: cannot return value referencing local variable `board`
[INFO] [stderr]   --> src/lib.rs:26:34
[INFO] [stderr]    |
[INFO] [stderr] 20 |                 let player_move = current_player.get_move(opposing_player, &board);
[INFO] [stderr]    |                                                                            ------ `board` is borrowed here
[INFO] [stderr] ...
[INFO] [stderr] 26 |             game_state => return game_state
[INFO] [stderr]    |                                  ^^^^^^^^^^ returns a value referencing data owned by the current function
[INFO] [stderr] 
[INFO] [stderr] error[E0515]: cannot return value referencing local variable `board`
[INFO] [stderr]   --> src/lib.rs:26:34
[INFO] [stderr]    |
[INFO] [stderr] 21 |                 board = board.occupy_cell(current_player, player_move);
[INFO] [stderr]    |                         ----- `board` is borrowed here
[INFO] [stderr] ...
[INFO] [stderr] 26 |             game_state => return game_state
[INFO] [stderr]    |                                  ^^^^^^^^^^ returns a value referencing data owned by the current function
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 3 previous errors
[INFO] [stderr] 
[INFO] [stderr] Some errors have detailed explanations: E0506, E0515.
[INFO] [stderr] For more information about an error, try `rustc --explain E0506`.
[INFO] [stderr] error: Could not compile `tic-tac-toe-rust`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "f1245b7dfcd577e3cf0a122f8f943e1b974eee4da84bba77cb3cc7ffaee33a38"`
[INFO] running `"docker" "rm" "-f" "f1245b7dfcd577e3cf0a122f8f943e1b974eee4da84bba77cb3cc7ffaee33a38"`
[INFO] [stdout] f1245b7dfcd577e3cf0a122f8f943e1b974eee4da84bba77cb3cc7ffaee33a38