[INFO] cloning repository https://github.com/kiirecodes/checkers
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/kiirecodes/checkers" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkiirecodes%2Fcheckers", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkiirecodes%2Fcheckers'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] e42f3cda5f2c9d5c676ed122ae2e91852026ae7a
[INFO] fixing kiirecodes/checkers against try#622891a4e29178280638a6b63a8908bde2c0c854+cargoflags=-Zfix-edition=start=2015 for pr-157817-2
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkiirecodes%2Fcheckers" "/workspace/builds/worker-1-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/kiirecodes/checkers
[INFO] finished tweaking git repo https://github.com/kiirecodes/checkers
[INFO] tweaked toml for git repo https://github.com/kiirecodes/checkers written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/kiirecodes/checkers on toolchain 622891a4e29178280638a6b63a8908bde2c0c854
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+622891a4e29178280638a6b63a8908bde2c0c854" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/kiirecodes/checkers 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" "+622891a4e29178280638a6b63a8908bde2c0c854" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/source:/opt/rustwide/workdir:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,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" "-m" "1610612736" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:3a6becf2bc8dde7f3fa57ede90e4f284e72d296796fc446bbb1e2c7cc0530151" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] c8a2691d56895d4e7c542c623540f4cac590e063d43fa22d8b446038f01b2b35
[INFO] running `Command { std: "docker" "start" "c8a2691d56895d4e7c542c623540f4cac590e063d43fa22d8b446038f01b2b35", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-w" "/opt/rustwide/workdir" "--user" "0:0" "c8a2691d56895d4e7c542c623540f4cac590e063d43fa22d8b446038f01b2b35" "/opt/rustwide/cargo-home/bin/cargo" "+622891a4e29178280638a6b63a8908bde2c0c854" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c8a2691d56895d4e7c542c623540f4cac590e063d43fa22d8b446038f01b2b35", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=" "-e" "RUSTDOCFLAGS=" "-w" "/opt/rustwide/workdir" "--user" "0:0" "c8a2691d56895d4e7c542c623540f4cac590e063d43fa22d8b446038f01b2b35" "/opt/rustwide/cargo-home/bin/cargo" "+622891a4e29178280638a6b63a8908bde2c0c854" "fix" "--allow-no-vcs" "--allow-dirty" "--frozen" "--all" "--all-targets" "--message-format=json" "-Zfix-edition=start=2015", kill_on_drop: false }`
[INFO] [stderr]     Checking checkers v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `Board`
[INFO] [stdout]  --> src/engine/move_.rs:1:20
[INFO] [stdout]   |
[INFO] [stdout] 1 | use super::board::{Board, Square};
[INFO] [stdout]   |                    ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Board`
[INFO] [stdout]  --> src/engine/move_.rs:1:20
[INFO] [stdout]   |
[INFO] [stdout] 1 | use super::board::{Board, Square};
[INFO] [stdout]   |                    ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `pre_move` and `post_move` are never read
[INFO] [stdout]  --> src/engine/move_.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub struct Move {
[INFO] [stdout]   |            ---- fields in this struct
[INFO] [stdout] 5 |     pre_move: Option<Box<Move>>,
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout] 6 |     post_move: Option<Box<Move>>,
[INFO] [stdout]   |     ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `is_queen` and `color` are never read
[INFO] [stdout]   --> src/engine/move_.rs:50:5
[INFO] [stdout]    |
[INFO] [stdout] 48 | pub struct Piece {
[INFO] [stdout]    |            ----- fields in this struct
[INFO] [stdout] 49 |     position: Square,
[INFO] [stdout] 50 |     is_queen: bool,
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] 51 |     color: Color,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `LeftLower`, `LeftUpper`, `RightLower`, and `RightUpper` are never constructed
[INFO] [stdout]   --> src/engine/move_.rs:55:5
[INFO] [stdout]    |
[INFO] [stdout] 54 | enum Direction {
[INFO] [stdout]    |      --------- variants in this enum
[INFO] [stdout] 55 |     LeftLower,
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout] 56 |     LeftUpper,
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout] 57 |     RightLower,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout] 58 |     RightUpper,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused arithmetic operation that must be used
[INFO] [stdout]   --> src/engine/move_.rs:24:17
[INFO] [stdout]    |
[INFO] [stdout] 24 |                 square.x - self.count;
[INFO] [stdout]    |                 ^^^^^^^^^^^^^^^^^^^^^ the arithmetic operation produces a value
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 24 |                 let _ = square.x - self.count;
[INFO] [stdout]    |                 +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused arithmetic operation that must be used
[INFO] [stdout]   --> src/engine/move_.rs:25:17
[INFO] [stdout]    |
[INFO] [stdout] 25 |                 square.y + self.count;
[INFO] [stdout]    |                 ^^^^^^^^^^^^^^^^^^^^^ the arithmetic operation produces a value
[INFO] [stdout]    |
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 25 |                 let _ = square.y + self.count;
[INFO] [stdout]    |                 +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused arithmetic operation that must be used
[INFO] [stdout]   --> src/engine/move_.rs:29:17
[INFO] [stdout]    |
[INFO] [stdout] 29 |                 square.x - self.count;
[INFO] [stdout]    |                 ^^^^^^^^^^^^^^^^^^^^^ the arithmetic operation produces a value
[INFO] [stdout]    |
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 29 |                 let _ = square.x - self.count;
[INFO] [stdout]    |                 +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused arithmetic operation that must be used
[INFO] [stdout]   --> src/engine/move_.rs:30:17
[INFO] [stdout]    |
[INFO] [stdout] 30 |                 square.y - self.count;
[INFO] [stdout]    |                 ^^^^^^^^^^^^^^^^^^^^^ the arithmetic operation produces a value
[INFO] [stdout]    |
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 30 |                 let _ = square.y - self.count;
[INFO] [stdout]    |                 +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused arithmetic operation that must be used
[INFO] [stdout]   --> src/engine/move_.rs:34:17
[INFO] [stdout]    |
[INFO] [stdout] 34 |                 square.x + self.count;
[INFO] [stdout]    |                 ^^^^^^^^^^^^^^^^^^^^^ the arithmetic operation produces a value
[INFO] [stdout]    |
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 34 |                 let _ = square.x + self.count;
[INFO] [stdout]    |                 +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused arithmetic operation that must be used
[INFO] [stdout]   --> src/engine/move_.rs:35:17
[INFO] [stdout]    |
[INFO] [stdout] 35 |                 square.y + self.count;
[INFO] [stdout]    |                 ^^^^^^^^^^^^^^^^^^^^^ the arithmetic operation produces a value
[INFO] [stdout]    |
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 35 |                 let _ = square.y + self.count;
[INFO] [stdout]    |                 +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused arithmetic operation that must be used
[INFO] [stdout]   --> src/engine/move_.rs:39:17
[INFO] [stdout]    |
[INFO] [stdout] 39 |                 square.x + self.count;
[INFO] [stdout]    |                 ^^^^^^^^^^^^^^^^^^^^^ the arithmetic operation produces a value
[INFO] [stdout]    |
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 39 |                 let _ = square.x + self.count;
[INFO] [stdout]    |                 +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused arithmetic operation that must be used
[INFO] [stdout]   --> src/engine/move_.rs:40:17
[INFO] [stdout]    |
[INFO] [stdout] 40 |                 square.y - self.count;
[INFO] [stdout]    |                 ^^^^^^^^^^^^^^^^^^^^^ the arithmetic operation produces a value
[INFO] [stdout]    |
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 40 |                 let _ = square.y - self.count;
[INFO] [stdout]    |                 +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0601]: `main` function not found in crate `main`
[INFO] [stdout]   |
[INFO] [stdout]   = note: consider adding a `main` function to `src/bin/main.rs`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0601`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `checkers` (bin "main") due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] warning: fields `pre_move` and `post_move` are never read
[INFO] [stdout]  --> src/engine/move_.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub struct Move {
[INFO] [stdout]   |            ---- fields in this struct
[INFO] [stdout] 5 |     pre_move: Option<Box<Move>>,
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout] 6 |     post_move: Option<Box<Move>>,
[INFO] [stdout]   |     ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `is_queen` and `color` are never read
[INFO] [stdout]   --> src/engine/move_.rs:50:5
[INFO] [stdout]    |
[INFO] [stdout] 48 | pub struct Piece {
[INFO] [stdout]    |            ----- fields in this struct
[INFO] [stdout] 49 |     position: Square,
[INFO] [stdout] 50 |     is_queen: bool,
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] 51 |     color: Color,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `LeftLower`, `LeftUpper`, `RightLower`, and `RightUpper` are never constructed
[INFO] [stdout]   --> src/engine/move_.rs:55:5
[INFO] [stdout]    |
[INFO] [stdout] 54 | enum Direction {
[INFO] [stdout]    |      --------- variants in this enum
[INFO] [stdout] 55 |     LeftLower,
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout] 56 |     LeftUpper,
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout] 57 |     RightLower,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout] 58 |     RightUpper,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused arithmetic operation that must be used
[INFO] [stdout]   --> src/engine/move_.rs:24:17
[INFO] [stdout]    |
[INFO] [stdout] 24 |                 square.x - self.count;
[INFO] [stdout]    |                 ^^^^^^^^^^^^^^^^^^^^^ the arithmetic operation produces a value
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 24 |                 let _ = square.x - self.count;
[INFO] [stdout]    |                 +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused arithmetic operation that must be used
[INFO] [stdout]   --> src/engine/move_.rs:25:17
[INFO] [stdout]    |
[INFO] [stdout] 25 |                 square.y + self.count;
[INFO] [stdout]    |                 ^^^^^^^^^^^^^^^^^^^^^ the arithmetic operation produces a value
[INFO] [stdout]    |
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 25 |                 let _ = square.y + self.count;
[INFO] [stdout]    |                 +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused arithmetic operation that must be used
[INFO] [stdout]   --> src/engine/move_.rs:29:17
[INFO] [stdout]    |
[INFO] [stdout] 29 |                 square.x - self.count;
[INFO] [stdout]    |                 ^^^^^^^^^^^^^^^^^^^^^ the arithmetic operation produces a value
[INFO] [stdout]    |
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 29 |                 let _ = square.x - self.count;
[INFO] [stdout]    |                 +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused arithmetic operation that must be used
[INFO] [stdout]   --> src/engine/move_.rs:30:17
[INFO] [stdout]    |
[INFO] [stdout] 30 |                 square.y - self.count;
[INFO] [stdout]    |                 ^^^^^^^^^^^^^^^^^^^^^ the arithmetic operation produces a value
[INFO] [stdout]    |
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 30 |                 let _ = square.y - self.count;
[INFO] [stdout]    |                 +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused arithmetic operation that must be used
[INFO] [stdout]   --> src/engine/move_.rs:34:17
[INFO] [stdout]    |
[INFO] [stdout] 34 |                 square.x + self.count;
[INFO] [stdout]    |                 ^^^^^^^^^^^^^^^^^^^^^ the arithmetic operation produces a value
[INFO] [stdout]    |
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 34 |                 let _ = square.x + self.count;
[INFO] [stdout]    |                 +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused arithmetic operation that must be used
[INFO] [stdout]   --> src/engine/move_.rs:35:17
[INFO] [stdout]    |
[INFO] [stdout] 35 |                 square.y + self.count;
[INFO] [stdout]    |                 ^^^^^^^^^^^^^^^^^^^^^ the arithmetic operation produces a value
[INFO] [stdout]    |
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 35 |                 let _ = square.y + self.count;
[INFO] [stdout]    |                 +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused arithmetic operation that must be used
[INFO] [stdout]   --> src/engine/move_.rs:39:17
[INFO] [stdout]    |
[INFO] [stdout] 39 |                 square.x + self.count;
[INFO] [stdout]    |                 ^^^^^^^^^^^^^^^^^^^^^ the arithmetic operation produces a value
[INFO] [stdout]    |
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 39 |                 let _ = square.x + self.count;
[INFO] [stdout]    |                 +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused arithmetic operation that must be used
[INFO] [stdout]   --> src/engine/move_.rs:40:17
[INFO] [stdout]    |
[INFO] [stdout] 40 |                 square.y - self.count;
[INFO] [stdout]    |                 ^^^^^^^^^^^^^^^^^^^^^ the arithmetic operation produces a value
[INFO] [stdout]    |
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 40 |                 let _ = square.y - self.count;
[INFO] [stdout]    |                 +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "c8a2691d56895d4e7c542c623540f4cac590e063d43fa22d8b446038f01b2b35", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c8a2691d56895d4e7c542c623540f4cac590e063d43fa22d8b446038f01b2b35", kill_on_drop: false }`
[INFO] [stdout] c8a2691d56895d4e7c542c623540f4cac590e063d43fa22d8b446038f01b2b35
