[INFO] cloning repository https://github.com/remyzorg/minesweeper-solver
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/remyzorg/minesweeper-solver" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fremyzorg%2Fminesweeper-solver", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fremyzorg%2Fminesweeper-solver'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] d38a0dd36be00040302429e46f40cca810fbdc05
[INFO] testing remyzorg/minesweeper-solver against 1.55.0 for beta-1.56-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fremyzorg%2Fminesweeper-solver" "/workspace/builds/worker-9/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-9/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/remyzorg/minesweeper-solver on toolchain 1.55.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/remyzorg/minesweeper-solver
[INFO] finished tweaking git repo https://github.com/remyzorg/minesweeper-solver
[INFO] tweaked toml for git repo https://github.com/remyzorg/minesweeper-solver written to /workspace/builds/worker-9/source/Cargo.toml
[INFO] crate git repo https://github.com/remyzorg/minesweeper-solver already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 7559801ac5ec4e57094f1960a04bed68adddf222d68ad2cb5fbc5d62b31208a4
[INFO] running `Command { std: "docker" "start" "-a" "7559801ac5ec4e57094f1960a04bed68adddf222d68ad2cb5fbc5d62b31208a4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7559801ac5ec4e57094f1960a04bed68adddf222d68ad2cb5fbc5d62b31208a4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7559801ac5ec4e57094f1960a04bed68adddf222d68ad2cb5fbc5d62b31208a4", kill_on_drop: false }`
[INFO] [stdout] 7559801ac5ec4e57094f1960a04bed68adddf222d68ad2cb5fbc5d62b31208a4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 254b5df99c43704aa423f296b7c5930e524ab5ecc45a48fbef3014f0f753c127
[INFO] running `Command { std: "docker" "start" "-a" "254b5df99c43704aa423f296b7c5930e524ab5ecc45a48fbef3014f0f753c127", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.70
[INFO] [stderr]    Compiling getrandom v0.1.14
[INFO] [stderr]    Compiling ppv-lite86 v0.2.8
[INFO] [stderr]    Compiling rand_core v0.5.1
[INFO] [stderr]    Compiling rand_chacha v0.2.2
[INFO] [stderr]    Compiling rand v0.7.3
[INFO] [stderr]    Compiling mineseeper-solver v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 6.90s
[INFO] running `Command { std: "docker" "inspect" "254b5df99c43704aa423f296b7c5930e524ab5ecc45a48fbef3014f0f753c127", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "254b5df99c43704aa423f296b7c5930e524ab5ecc45a48fbef3014f0f753c127", kill_on_drop: false }`
[INFO] [stdout] 254b5df99c43704aa423f296b7c5930e524ab5ecc45a48fbef3014f0f753c127
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] fa8f84ffa2f00df357c0b81e71d0ad130127efbb1f22b4dc80020bcb7e591359
[INFO] running `Command { std: "docker" "start" "-a" "fa8f84ffa2f00df357c0b81e71d0ad130127efbb1f22b4dc80020bcb7e591359", kill_on_drop: false }`
[INFO] [stderr]    Compiling mineseeper-solver v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.69s
[INFO] running `Command { std: "docker" "inspect" "fa8f84ffa2f00df357c0b81e71d0ad130127efbb1f22b4dc80020bcb7e591359", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fa8f84ffa2f00df357c0b81e71d0ad130127efbb1f22b4dc80020bcb7e591359", kill_on_drop: false }`
[INFO] [stdout] fa8f84ffa2f00df357c0b81e71d0ad130127efbb1f22b4dc80020bcb7e591359
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] dcbaccc392317d0aa10b285429fe5798515dd035f119da0781a621e1cb1ff18e
[INFO] running `Command { std: "docker" "start" "-a" "dcbaccc392317d0aa10b285429fe5798515dd035f119da0781a621e1cb1ff18e", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/mineseeper_solver-98d8dbfe4a478744)
[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" "dcbaccc392317d0aa10b285429fe5798515dd035f119da0781a621e1cb1ff18e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dcbaccc392317d0aa10b285429fe5798515dd035f119da0781a621e1cb1ff18e", kill_on_drop: false }`
[INFO] [stdout] dcbaccc392317d0aa10b285429fe5798515dd035f119da0781a621e1cb1ff18e