[INFO] cloning repository https://github.com/sourcedennis/sudoku-solver
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/sourcedennis/sudoku-solver" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsourcedennis%2Fsudoku-solver", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsourcedennis%2Fsudoku-solver'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] dcc5eeabe69498dcff04aa673c61fef91d28e004
[INFO] checking sourcedennis/sudoku-solver against master#8c32e313cccf7df531e2d49ffb8227bb92304aee for pr-145608-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsourcedennis%2Fsudoku-solver" "/workspace/builds/worker-6-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/sourcedennis/sudoku-solver
[INFO] finished tweaking git repo https://github.com/sourcedennis/sudoku-solver
[INFO] tweaked toml for git repo https://github.com/sourcedennis/sudoku-solver written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/sourcedennis/sudoku-solver on toolchain 8c32e313cccf7df531e2d49ffb8227bb92304aee
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8c32e313cccf7df531e2d49ffb8227bb92304aee" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/sourcedennis/sudoku-solver 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" "+8c32e313cccf7df531e2d49ffb8227bb92304aee" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+8c32e313cccf7df531e2d49ffb8227bb92304aee" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 22b50d8946e12378abd13964239e212b1acdb3eed3096526ddbe69d143950a1e
[INFO] running `Command { std: "docker" "start" "-a" "22b50d8946e12378abd13964239e212b1acdb3eed3096526ddbe69d143950a1e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "22b50d8946e12378abd13964239e212b1acdb3eed3096526ddbe69d143950a1e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "22b50d8946e12378abd13964239e212b1acdb3eed3096526ddbe69d143950a1e", kill_on_drop: false }`
[INFO] [stdout] 22b50d8946e12378abd13964239e212b1acdb3eed3096526ddbe69d143950a1e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+8c32e313cccf7df531e2d49ffb8227bb92304aee" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4440dea22d18399aa5426309aefc3d1b9a81ceb72500969c0043fe3c4cbc8819
[INFO] running `Command { std: "docker" "start" "-a" "4440dea22d18399aa5426309aefc3d1b9a81ceb72500969c0043fe3c4cbc8819", kill_on_drop: false }`
[INFO] [stderr]     Checking sudoku-solver v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around closure body
[INFO] [stdout]    --> src/main.rs:108:44
[INFO] [stdout]     |
[INFO] [stdout] 108 |         .fold( 0b000_000_000,  |acc, opts| ( acc | opts ) );
[INFO] [stdout]     |                                            ^^          ^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 108 -         .fold( 0b000_000_000,  |acc, opts| ( acc | opts ) );
[INFO] [stdout] 108 +         .fold( 0b000_000_000,  |acc, opts| acc | opts );
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around closure body
[INFO] [stdout]    --> src/main.rs:114:44
[INFO] [stdout]     |
[INFO] [stdout] 114 |         .fold( 0b000_000_000,  |acc, opts| ( acc | opts ) );
[INFO] [stdout]     |                                            ^^          ^^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 114 -         .fold( 0b000_000_000,  |acc, opts| ( acc | opts ) );
[INFO] [stdout] 114 +         .fold( 0b000_000_000,  |acc, opts| acc | opts );
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around closure body
[INFO] [stdout]    --> src/main.rs:126:44
[INFO] [stdout]     |
[INFO] [stdout] 126 |         .fold( 0b000_000_000,  |acc, opts| ( acc | opts.0 ) )
[INFO] [stdout]     |                                            ^^            ^^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 126 -         .fold( 0b000_000_000,  |acc, opts| ( acc | opts.0 ) )
[INFO] [stdout] 126 +         .fold( 0b000_000_000,  |acc, opts| acc | opts.0 )
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `return_position_impl_trait_in_trait` has been stable since 1.75.0 and no longer requires an attribute to enable
[INFO] [stdout]  --> src/main.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(return_position_impl_trait_in_trait)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(stable_features)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around closure body
[INFO] [stdout]    --> src/main.rs:108:44
[INFO] [stdout]     |
[INFO] [stdout] 108 |         .fold( 0b000_000_000,  |acc, opts| ( acc | opts ) );
[INFO] [stdout]     |                                            ^^          ^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 108 -         .fold( 0b000_000_000,  |acc, opts| ( acc | opts ) );
[INFO] [stdout] 108 +         .fold( 0b000_000_000,  |acc, opts| acc | opts );
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around closure body
[INFO] [stdout]    --> src/main.rs:114:44
[INFO] [stdout]     |
[INFO] [stdout] 114 |         .fold( 0b000_000_000,  |acc, opts| ( acc | opts ) );
[INFO] [stdout]     |                                            ^^          ^^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 114 -         .fold( 0b000_000_000,  |acc, opts| ( acc | opts ) );
[INFO] [stdout] 114 +         .fold( 0b000_000_000,  |acc, opts| acc | opts );
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around closure body
[INFO] [stdout]    --> src/main.rs:126:44
[INFO] [stdout]     |
[INFO] [stdout] 126 |         .fold( 0b000_000_000,  |acc, opts| ( acc | opts.0 ) )
[INFO] [stdout]     |                                            ^^            ^^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 126 -         .fold( 0b000_000_000,  |acc, opts| ( acc | opts.0 ) )
[INFO] [stdout] 126 +         .fold( 0b000_000_000,  |acc, opts| acc | opts.0 )
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `return_position_impl_trait_in_trait` has been stable since 1.75.0 and no longer requires an attribute to enable
[INFO] [stdout]  --> src/main.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(return_position_impl_trait_in_trait)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(stable_features)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.44s
[INFO] running `Command { std: "docker" "inspect" "4440dea22d18399aa5426309aefc3d1b9a81ceb72500969c0043fe3c4cbc8819", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4440dea22d18399aa5426309aefc3d1b9a81ceb72500969c0043fe3c4cbc8819", kill_on_drop: false }`
[INFO] [stdout] 4440dea22d18399aa5426309aefc3d1b9a81ceb72500969c0043fe3c4cbc8819