[INFO] cloning repository https://github.com/Nekrolm/reversi
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Nekrolm/reversi" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FNekrolm%2Freversi", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FNekrolm%2Freversi'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 47591702674401c710e8c1ea18569a4071db29bb
[INFO] checking Nekrolm/reversi against beta for pr-78714
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FNekrolm%2Freversi" "/workspace/builds/worker-7/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Nekrolm/reversi on toolchain beta
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Nekrolm/reversi
[INFO] finished tweaking git repo https://github.com/Nekrolm/reversi
[INFO] tweaked toml for git repo https://github.com/Nekrolm/reversi written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate git repo https://github.com/Nekrolm/reversi already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "rustops/crates-build-env@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f641fd447aaadc4481728c8151a4cf703f4ac92665d43c387e00f79b5a72990a
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "f641fd447aaadc4481728c8151a4cf703f4ac92665d43c387e00f79b5a72990a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f641fd447aaadc4481728c8151a4cf703f4ac92665d43c387e00f79b5a72990a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f641fd447aaadc4481728c8151a4cf703f4ac92665d43c387e00f79b5a72990a", kill_on_drop: false }`
[INFO] [stdout] f641fd447aaadc4481728c8151a4cf703f4ac92665d43c387e00f79b5a72990a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1abc272968d7ff79354f4f6edd5a2e03e3184c7341fafa4d0b42f22cb5ffeaee
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "1abc272968d7ff79354f4f6edd5a2e03e3184c7341fafa4d0b42f22cb5ffeaee", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.17
[INFO] [stderr]    Compiling ncurses v5.99.0
[INFO] [stderr]    Compiling futures-macro v0.3.4
[INFO] [stderr]    Compiling async-trait v0.1.29
[INFO] [stderr]     Checking futures-util v0.3.4
[INFO] [stderr]     Checking futures-executor v0.3.4
[INFO] [stderr]     Checking futures v0.3.4
[INFO] [stderr]     Checking Reversi v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused imports: `BorrowMut`, `Borrow`
[INFO] [stdout]  --> src/game/mod.rs:2:19
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::borrow::{BorrowMut, Borrow};
[INFO] [stdout]   |                   ^^^^^^^^^  ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::ops::Deref`
[INFO] [stdout]  --> src/game/mod.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::ops::Deref;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `futures`
[INFO] [stdout]  --> src/game/mod.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use futures;
[INFO] [stdout]   |     ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::error::Error`
[INFO] [stdout]  --> src/game/board.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::error::Error;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::ops::Range`
[INFO] [stdout]  --> src/view/stdio.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 | use std::ops::Range;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `view::stdio::StdIOView`
[INFO] [stdout]  --> src/main.rs:9:9
[INFO] [stdout]   |
[INFO] [stdout] 9 |     use view::stdio::StdIOView;
[INFO] [stdout]   |         ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `BorrowMut`, `Borrow`
[INFO] [stdout]  --> src/game/mod.rs:2:19
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::borrow::{BorrowMut, Borrow};
[INFO] [stdout]   |                   ^^^^^^^^^  ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::ops::Deref`
[INFO] [stdout]  --> src/game/mod.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::ops::Deref;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `futures`
[INFO] [stdout]  --> src/game/mod.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use futures;
[INFO] [stdout]   |     ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::error::Error`
[INFO] [stdout]  --> src/game/board.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::error::Error;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::ops::Range`
[INFO] [stdout]  --> src/view/stdio.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 | use std::ops::Range;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `view::stdio::StdIOView`
[INFO] [stdout]  --> src/main.rs:9:9
[INFO] [stdout]   |
[INFO] [stdout] 9 |     use view::stdio::StdIOView;
[INFO] [stdout]   |         ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable statement
[INFO] [stdout]    --> src/view/curses.rs:109:9
[INFO] [stdout]     |
[INFO] [stdout] 96  | /         loop {
[INFO] [stdout] 97  | |             self.window.draw(player, board, self.position.get());
[INFO] [stdout] 98  | |             match self.window.action() {
[INFO] [stdout] 99  | |                 Action::Exit => return MoveResponse::Exit,
[INFO] [stdout] ...   |
[INFO] [stdout] 107 | |             }
[INFO] [stdout] 108 | |         }
[INFO] [stdout]     | |_________- any code following this expression is unreachable
[INFO] [stdout] 109 |           return MoveResponse::Exit;
[INFO] [stdout]     |           ^^^^^^^^^^^^^^^^^^^^^^^^^^ unreachable statement
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unreachable_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `err`
[INFO] [stdout]   --> src/view/mod.rs:11:29
[INFO] [stdout]    |
[INFO] [stdout] 11 |     fn handle_error(& self, err : MoveError) {}
[INFO] [stdout]    |                             ^^^ help: if this is intentional, prefix it with an underscore: `_err`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `my_score`
[INFO] [stdout]   --> src/view/mod.rs:13:30
[INFO] [stdout]    |
[INFO] [stdout] 13 |     fn handle_result(& self, my_score : u32, other_score : u32) {}
[INFO] [stdout]    |                              ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_my_score`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `other_score`
[INFO] [stdout]   --> src/view/mod.rs:13:46
[INFO] [stdout]    |
[INFO] [stdout] 13 |     fn handle_result(& self, my_score : u32, other_score : u32) {}
[INFO] [stdout]    |                                              ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_other_score`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `err`
[INFO] [stdout]   --> src/view/stdio.rs:61:28
[INFO] [stdout]    |
[INFO] [stdout] 61 |     fn handle_error(&self, err : board::MoveError){
[INFO] [stdout]    |                            ^^^ help: if this is intentional, prefix it with an underscore: `_err`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `err`
[INFO] [stdout]    --> src/view/curses.rs:112:28
[INFO] [stdout]     |
[INFO] [stdout] 112 |     fn handle_error(&self, err : MoveError){
[INFO] [stdout]     |                            ^^^ help: if this is intentional, prefix it with an underscore: `_err`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `err`
[INFO] [stdout]   --> src/player/dummy_player.rs:31:32
[INFO] [stdout]    |
[INFO] [stdout] 31 |     fn notify_error(&mut self, err : MoveError) {}
[INFO] [stdout]    |                                ^^^ help: if this is intentional, prefix it with an underscore: `_err`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `my_score`
[INFO] [stdout]   --> src/player/dummy_player.rs:32:31
[INFO] [stdout]    |
[INFO] [stdout] 32 |     fn send_result(&mut self, my_score : u32, other_score : u32) {}
[INFO] [stdout]    |                               ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_my_score`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `other_score`
[INFO] [stdout]   --> src/player/dummy_player.rs:32:47
[INFO] [stdout]    |
[INFO] [stdout] 32 |     fn send_result(&mut self, my_score : u32, other_score : u32) {}
[INFO] [stdout]    |                                               ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_other_score`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable statement
[INFO] [stdout]    --> src/view/curses.rs:109:9
[INFO] [stdout]     |
[INFO] [stdout] 96  | /         loop {
[INFO] [stdout] 97  | |             self.window.draw(player, board, self.position.get());
[INFO] [stdout] 98  | |             match self.window.action() {
[INFO] [stdout] 99  | |                 Action::Exit => return MoveResponse::Exit,
[INFO] [stdout] ...   |
[INFO] [stdout] 107 | |             }
[INFO] [stdout] 108 | |         }
[INFO] [stdout]     | |_________- any code following this expression is unreachable
[INFO] [stdout] 109 |           return MoveResponse::Exit;
[INFO] [stdout]     |           ^^^^^^^^^^^^^^^^^^^^^^^^^^ unreachable statement
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unreachable_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: crate `Reversi` should have a snake case name
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout]   = help: convert the identifier to snake case: `reversi`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `err`
[INFO] [stdout]   --> src/view/mod.rs:11:29
[INFO] [stdout]    |
[INFO] [stdout] 11 |     fn handle_error(& self, err : MoveError) {}
[INFO] [stdout]    |                             ^^^ help: if this is intentional, prefix it with an underscore: `_err`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `my_score`
[INFO] [stdout]   --> src/view/mod.rs:13:30
[INFO] [stdout]    |
[INFO] [stdout] 13 |     fn handle_result(& self, my_score : u32, other_score : u32) {}
[INFO] [stdout]    |                              ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_my_score`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `other_score`
[INFO] [stdout]   --> src/view/mod.rs:13:46
[INFO] [stdout]    |
[INFO] [stdout] 13 |     fn handle_result(& self, my_score : u32, other_score : u32) {}
[INFO] [stdout]    |                                              ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_other_score`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `err`
[INFO] [stdout]   --> src/view/stdio.rs:61:28
[INFO] [stdout]    |
[INFO] [stdout] 61 |     fn handle_error(&self, err : board::MoveError){
[INFO] [stdout]    |                            ^^^ help: if this is intentional, prefix it with an underscore: `_err`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `err`
[INFO] [stdout]    --> src/view/curses.rs:112:28
[INFO] [stdout]     |
[INFO] [stdout] 112 |     fn handle_error(&self, err : MoveError){
[INFO] [stdout]     |                            ^^^ help: if this is intentional, prefix it with an underscore: `_err`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `err`
[INFO] [stdout]   --> src/player/dummy_player.rs:31:32
[INFO] [stdout]    |
[INFO] [stdout] 31 |     fn notify_error(&mut self, err : MoveError) {}
[INFO] [stdout]    |                                ^^^ help: if this is intentional, prefix it with an underscore: `_err`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `my_score`
[INFO] [stdout]   --> src/player/dummy_player.rs:32:31
[INFO] [stdout]    |
[INFO] [stdout] 32 |     fn send_result(&mut self, my_score : u32, other_score : u32) {}
[INFO] [stdout]    |                               ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_my_score`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `other_score`
[INFO] [stdout]   --> src/player/dummy_player.rs:32:47
[INFO] [stdout]    |
[INFO] [stdout] 32 |     fn send_result(&mut self, my_score : u32, other_score : u32) {}
[INFO] [stdout]    |                                               ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_other_score`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 16 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: crate `Reversi` should have a snake case name
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout]   = help: convert the identifier to snake case: `reversi`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 16 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 22.09s
[INFO] running `Command { std: "docker" "inspect" "1abc272968d7ff79354f4f6edd5a2e03e3184c7341fafa4d0b42f22cb5ffeaee", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1abc272968d7ff79354f4f6edd5a2e03e3184c7341fafa4d0b42f22cb5ffeaee", kill_on_drop: false }`
[INFO] [stdout] 1abc272968d7ff79354f4f6edd5a2e03e3184c7341fafa4d0b42f22cb5ffeaee