[INFO] cloning repository https://github.com/luna7111/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/luna7111/sudoku-solver" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fluna7111%2Fsudoku-solver", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fluna7111%2Fsudoku-solver'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 34079008b4c5cec75058b8205368d69ac66203b0
[INFO] checking luna7111/sudoku-solver against try#3f7e3b175fda7edbf81081bcd9b91b73f2f7993f for pr-156157
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fluna7111%2Fsudoku-solver" "/workspace/builds/worker-7-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/luna7111/sudoku-solver
[INFO] finished tweaking git repo https://github.com/luna7111/sudoku-solver
[INFO] tweaked toml for git repo https://github.com/luna7111/sudoku-solver written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/luna7111/sudoku-solver on toolchain 3f7e3b175fda7edbf81081bcd9b91b73f2f7993f
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+3f7e3b175fda7edbf81081bcd9b91b73f2f7993f" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/luna7111/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" "+3f7e3b175fda7edbf81081bcd9b91b73f2f7993f" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[ERROR] error running command: no output for 300 seconds
[INFO] checking luna7111/sudoku-solver against try#3f7e3b175fda7edbf81081bcd9b91b73f2f7993f for pr-156157
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fluna7111%2Fsudoku-solver" "/workspace/builds/worker-7-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/luna7111/sudoku-solver
[INFO] finished tweaking git repo https://github.com/luna7111/sudoku-solver
[INFO] tweaked toml for git repo https://github.com/luna7111/sudoku-solver written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/luna7111/sudoku-solver on toolchain 3f7e3b175fda7edbf81081bcd9b91b73f2f7993f
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+3f7e3b175fda7edbf81081bcd9b91b73f2f7993f" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/luna7111/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" "+3f7e3b175fda7edbf81081bcd9b91b73f2f7993f" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[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-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+3f7e3b175fda7edbf81081bcd9b91b73f2f7993f" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 1a37fc85459141031ab1ff57d82b4b3c51f8c95bbb8ea030e7d13042dba4c422
[INFO] running `Command { std: "docker" "start" "-a" "1a37fc85459141031ab1ff57d82b4b3c51f8c95bbb8ea030e7d13042dba4c422", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1a37fc85459141031ab1ff57d82b4b3c51f8c95bbb8ea030e7d13042dba4c422", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1a37fc85459141031ab1ff57d82b4b3c51f8c95bbb8ea030e7d13042dba4c422", kill_on_drop: false }`
[INFO] [stdout] 1a37fc85459141031ab1ff57d82b4b3c51f8c95bbb8ea030e7d13042dba4c422
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+3f7e3b175fda7edbf81081bcd9b91b73f2f7993f" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d3942dc874f3abfe4216acff96db78d8d7decc14fdd7222e61d3e7d4bb3d6ca5
[INFO] running `Command { std: "docker" "start" "-a" "d3942dc874f3abfe4216acff96db78d8d7decc14fdd7222e61d3e7d4bb3d6ca5", kill_on_drop: false }`
[INFO] [stderr]     Checking sudoku-solver v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `board`
[INFO] [stdout]   --> src/main.rs:37:24
[INFO] [stdout]    |
[INFO] [stdout] 37 | fn evaluate_constrains(board: &mut Board) {
[INFO] [stdout]    |                        ^^^^^ help: if this is intentional, prefix it with an underscore: `_board`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `board`
[INFO] [stdout]   --> src/main.rs:37:24
[INFO] [stdout]    |
[INFO] [stdout] 37 | fn evaluate_constrains(board: &mut Board) {
[INFO] [stdout]    |                        ^^^^^ help: if this is intentional, prefix it with an underscore: `_board`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `BASE_4x4` should have an upper case name
[INFO] [stdout]    --> src/main.rs:150:7
[INFO] [stdout]     |
[INFO] [stdout] 150 | const BASE_4x4: &str = "1234";
[INFO] [stdout]     |       ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(non_upper_case_globals)]` (part of `#[warn(nonstandard_style)]`) on by default
[INFO] [stdout] help: convert the identifier to upper case (notice the capitalization)
[INFO] [stdout]     |
[INFO] [stdout] 150 - const BASE_4x4: &str = "1234";
[INFO] [stdout] 150 + const BASE_4X4: &str = "1234";
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `BASE_4x4` should have an upper case name
[INFO] [stdout]    --> src/main.rs:150:7
[INFO] [stdout]     |
[INFO] [stdout] 150 | const BASE_4x4: &str = "1234";
[INFO] [stdout]     |       ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(non_upper_case_globals)]` (part of `#[warn(nonstandard_style)]`) on by default
[INFO] [stdout] help: convert the identifier to upper case (notice the capitalization)
[INFO] [stdout]     |
[INFO] [stdout] 150 - const BASE_4x4: &str = "1234";
[INFO] [stdout] 150 + const BASE_4X4: &str = "1234";
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `BASE_9x9` should have an upper case name
[INFO] [stdout]    --> src/main.rs:151:7
[INFO] [stdout]     |
[INFO] [stdout] 151 | const BASE_9x9: &str = "123456789";
[INFO] [stdout]     |       ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: convert the identifier to upper case (notice the capitalization)
[INFO] [stdout]     |
[INFO] [stdout] 151 - const BASE_9x9: &str = "123456789";
[INFO] [stdout] 151 + const BASE_9X9: &str = "123456789";
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `BASE_16x16` should have an upper case name
[INFO] [stdout]    --> src/main.rs:152:7
[INFO] [stdout]     |
[INFO] [stdout] 152 | const BASE_16x16: &str = "0123456789abcdef";
[INFO] [stdout]     |       ^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: convert the identifier to upper case (notice the capitalization)
[INFO] [stdout]     |
[INFO] [stdout] 152 - const BASE_16x16: &str = "0123456789abcdef";
[INFO] [stdout] 152 + const BASE_16X16: &str = "0123456789abcdef";
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `BASE_9x9` should have an upper case name
[INFO] [stdout]    --> src/main.rs:151:7
[INFO] [stdout]     |
[INFO] [stdout] 151 | const BASE_9x9: &str = "123456789";
[INFO] [stdout]     |       ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: convert the identifier to upper case (notice the capitalization)
[INFO] [stdout]     |
[INFO] [stdout] 151 - const BASE_9x9: &str = "123456789";
[INFO] [stdout] 151 + const BASE_9X9: &str = "123456789";
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `BASE_16x16` should have an upper case name
[INFO] [stdout]    --> src/main.rs:152:7
[INFO] [stdout]     |
[INFO] [stdout] 152 | const BASE_16x16: &str = "0123456789abcdef";
[INFO] [stdout]     |       ^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: convert the identifier to upper case (notice the capitalization)
[INFO] [stdout]     |
[INFO] [stdout] 152 - const BASE_16x16: &str = "0123456789abcdef";
[INFO] [stdout] 152 + const BASE_16X16: &str = "0123456789abcdef";
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.09s
[INFO] running `Command { std: "docker" "inspect" "d3942dc874f3abfe4216acff96db78d8d7decc14fdd7222e61d3e7d4bb3d6ca5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d3942dc874f3abfe4216acff96db78d8d7decc14fdd7222e61d3e7d4bb3d6ca5", kill_on_drop: false }`
[INFO] [stdout] d3942dc874f3abfe4216acff96db78d8d7decc14fdd7222e61d3e7d4bb3d6ca5