[INFO] cloning repository https://github.com/fchiba/rust_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/fchiba/rust_sudoku_solver" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffchiba%2Frust_sudoku_solver", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffchiba%2Frust_sudoku_solver'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 4c12dd18ecca2c74c359b7d95bb634feb0d84c50
[INFO] testing fchiba/rust_sudoku_solver against beta-2022-02-22 for beta-1.60-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffchiba%2Frust_sudoku_solver" "/workspace/builds/worker-23/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-23/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/fchiba/rust_sudoku_solver on toolchain beta-2022-02-22
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-02-22" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/fchiba/rust_sudoku_solver
[INFO] finished tweaking git repo https://github.com/fchiba/rust_sudoku_solver
[INFO] tweaked toml for git repo https://github.com/fchiba/rust_sudoku_solver written to /workspace/builds/worker-23/source/Cargo.toml
[INFO] crate git repo https://github.com/fchiba/rust_sudoku_solver already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-02-22" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-23/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-23/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 84653b5f1270ea1b094e18408c3315c79281b0d0602827b1188a134d15899af5
[INFO] running `Command { std: "docker" "start" "-a" "84653b5f1270ea1b094e18408c3315c79281b0d0602827b1188a134d15899af5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "84653b5f1270ea1b094e18408c3315c79281b0d0602827b1188a134d15899af5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "84653b5f1270ea1b094e18408c3315c79281b0d0602827b1188a134d15899af5", kill_on_drop: false }`
[INFO] [stdout] 84653b5f1270ea1b094e18408c3315c79281b0d0602827b1188a134d15899af5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-23/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-23/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=warn" "-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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0d3989cf73a7ddf7a9f757b68d2ca3603eaf39be914ee835dad779ce3328dff7
[INFO] running `Command { std: "docker" "start" "-a" "0d3989cf73a7ddf7a9f757b68d2ca3603eaf39be914ee835dad779ce3328dff7", kill_on_drop: false }`
[INFO] [stderr]    Compiling sudokurust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]   --> src/main.rs:14:73
[INFO] [stdout]    |
[INFO] [stdout] 14 |             return Err(format!("couldn't open {}: {}", filename, Error::description(&why)));
[INFO] [stdout]    |                                                                         ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.40s
[INFO] running `Command { std: "docker" "inspect" "0d3989cf73a7ddf7a9f757b68d2ca3603eaf39be914ee835dad779ce3328dff7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0d3989cf73a7ddf7a9f757b68d2ca3603eaf39be914ee835dad779ce3328dff7", kill_on_drop: false }`
[INFO] [stdout] 0d3989cf73a7ddf7a9f757b68d2ca3603eaf39be914ee835dad779ce3328dff7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-23/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-23/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=warn" "-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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a4d99211728f74db0fb09412eb3ea7b878bd88ece4011ad58de296f3a890f48e
[INFO] running `Command { std: "docker" "start" "-a" "a4d99211728f74db0fb09412eb3ea7b878bd88ece4011ad58de296f3a890f48e", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling sudokurust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]   --> src/main.rs:14:73
[INFO] [stdout]    |
[INFO] [stdout] 14 |             return Err(format!("couldn't open {}: {}", filename, Error::description(&why)));
[INFO] [stdout]    |                                                                         ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.02s
[INFO] running `Command { std: "docker" "inspect" "a4d99211728f74db0fb09412eb3ea7b878bd88ece4011ad58de296f3a890f48e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a4d99211728f74db0fb09412eb3ea7b878bd88ece4011ad58de296f3a890f48e", kill_on_drop: false }`
[INFO] [stdout] a4d99211728f74db0fb09412eb3ea7b878bd88ece4011ad58de296f3a890f48e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-23/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-23/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=warn" "-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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 69ddc0626e61a8490fba76422fa5eaccf8def719de4a70d9d47a733d2d25f51f
[INFO] running `Command { std: "docker" "start" "-a" "69ddc0626e61a8490fba76422fa5eaccf8def719de4a70d9d47a733d2d25f51f", kill_on_drop: false }`
[INFO] [stderr] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stderr]   --> src/main.rs:14:73
[INFO] [stderr]    |
[INFO] [stderr] 14 |             return Err(format!("couldn't open {}: {}", filename, Error::description(&why)));
[INFO] [stderr]    |                                                                         ^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `sudokurust` (bin "sudokurust" test) generated 1 warning
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.00s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/sudokurust-fffde5a17b3ab8de)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "69ddc0626e61a8490fba76422fa5eaccf8def719de4a70d9d47a733d2d25f51f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "69ddc0626e61a8490fba76422fa5eaccf8def719de4a70d9d47a733d2d25f51f", kill_on_drop: false }`
[INFO] [stdout] 69ddc0626e61a8490fba76422fa5eaccf8def719de4a70d9d47a733d2d25f51f