[INFO] fetching crate minesweep 5.0.1...
[INFO] testing minesweep-5.0.1 against 1.55.0 for beta-1.56-1
[INFO] extracting crate minesweep 5.0.1 into /workspace/builds/worker-102/source
[INFO] validating manifest of crates.io crate minesweep 5.0.1 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 crates.io crate minesweep 5.0.1
[INFO] finished tweaking crates.io crate minesweep 5.0.1
[INFO] tweaked toml for crates.io crate minesweep 5.0.1 written to /workspace/builds/worker-102/source/Cargo.toml
[INFO] crate crates.io crate minesweep 5.0.1 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] [stderr] warning: only one of `license` or `license-file` is necessary
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded tui v0.15.0
[INFO] [stderr]   Downloaded bit-vec v0.6.3
[INFO] [stderr]   Downloaded structopt v0.3.21
[INFO] [stderr]   Downloaded redox_syscall v0.2.7
[INFO] [stderr]   Downloaded bit-set v0.5.2
[INFO] [stderr]   Downloaded anyhow v1.0.40
[INFO] [stderr]   Downloaded termion v1.5.6
[INFO] [stderr]   Downloaded itertools v0.10.0
[INFO] [stderr]   Downloaded ctrlc v3.1.9
[INFO] [stderr]   Downloaded cassowary v0.3.0
[INFO] [stderr]   Downloaded redox_termios v0.1.2
[INFO] [stderr]   Downloaded syn v1.0.71
[INFO] [stderr]   Downloaded structopt-derive v0.4.14
[INFO] [stderr]   Downloaded typed-builder v0.9.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-102/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-102/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] 92dcff42cd3bb4338739c7c8ac54a61a76b6115710b58a67e90234d96954c255
[INFO] running `Command { std: "docker" "start" "-a" "92dcff42cd3bb4338739c7c8ac54a61a76b6115710b58a67e90234d96954c255", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "92dcff42cd3bb4338739c7c8ac54a61a76b6115710b58a67e90234d96954c255", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "92dcff42cd3bb4338739c7c8ac54a61a76b6115710b58a67e90234d96954c255", kill_on_drop: false }`
[INFO] [stdout] 92dcff42cd3bb4338739c7c8ac54a61a76b6115710b58a67e90234d96954c255
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-102/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-102/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] 108cfdb30af5cbded1f6339d73e866ccb52e35ffce85f8124318c0e0f2dbb8d6
[INFO] running `Command { std: "docker" "start" "-a" "108cfdb30af5cbded1f6339d73e866ccb52e35ffce85f8124318c0e0f2dbb8d6", kill_on_drop: false }`
[INFO] [stderr] warning: only one of `license` or `license-file` is necessary
[INFO] [stderr]    Compiling libc v0.2.94
[INFO] [stderr]    Compiling proc-macro2 v1.0.26
[INFO] [stderr]    Compiling syn v1.0.71
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]    Compiling getrandom v0.2.2
[INFO] [stderr]    Compiling unicode-width v0.1.8
[INFO] [stderr]    Compiling unicode-segmentation v1.7.1
[INFO] [stderr]    Compiling vec_map v0.8.2
[INFO] [stderr]    Compiling numtoa v0.1.0
[INFO] [stderr]    Compiling ansi_term v0.11.0
[INFO] [stderr]    Compiling ppv-lite86 v0.2.10
[INFO] [stderr]    Compiling anyhow v1.0.40
[INFO] [stderr]    Compiling strsim v0.8.0
[INFO] [stderr]    Compiling cassowary v0.3.0
[INFO] [stderr]    Compiling bit-vec v0.6.3
[INFO] [stderr]    Compiling either v1.6.1
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling textwrap v0.11.0
[INFO] [stderr]    Compiling itertools v0.10.0
[INFO] [stderr]    Compiling bit-set v0.5.2
[INFO] [stderr]    Compiling heck v0.3.2
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling nix v0.20.0
[INFO] [stderr]    Compiling termion v1.5.6
[INFO] [stderr]    Compiling clap v2.33.3
[INFO] [stderr]    Compiling rand_core v0.6.2
[INFO] [stderr]    Compiling tui v0.15.0
[INFO] [stderr]    Compiling rand_chacha v0.3.0
[INFO] [stderr]    Compiling rand v0.8.3
[INFO] [stderr]    Compiling ctrlc v3.1.9
[INFO] [stderr]    Compiling structopt-derive v0.4.14
[INFO] [stderr]    Compiling thiserror-impl v1.0.24
[INFO] [stderr]    Compiling typed-builder v0.9.0
[INFO] [stderr]    Compiling thiserror v1.0.24
[INFO] [stderr]    Compiling structopt v0.3.21
[INFO] [stderr]    Compiling minesweep v5.0.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 17.13s
[INFO] running `Command { std: "docker" "inspect" "108cfdb30af5cbded1f6339d73e866ccb52e35ffce85f8124318c0e0f2dbb8d6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "108cfdb30af5cbded1f6339d73e866ccb52e35ffce85f8124318c0e0f2dbb8d6", kill_on_drop: false }`
[INFO] [stdout] 108cfdb30af5cbded1f6339d73e866ccb52e35ffce85f8124318c0e0f2dbb8d6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-102/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-102/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] 16e5082af4d6c04afbbb06dccdad358cc0b940e794bdab57fa475c70e9310ec0
[INFO] running `Command { std: "docker" "start" "-a" "16e5082af4d6c04afbbb06dccdad358cc0b940e794bdab57fa475c70e9310ec0", kill_on_drop: false }`
[INFO] [stderr] warning: only one of `license` or `license-file` is necessary
[INFO] [stderr]    Compiling minesweep v5.0.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.09s
[INFO] running `Command { std: "docker" "inspect" "16e5082af4d6c04afbbb06dccdad358cc0b940e794bdab57fa475c70e9310ec0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "16e5082af4d6c04afbbb06dccdad358cc0b940e794bdab57fa475c70e9310ec0", kill_on_drop: false }`
[INFO] [stdout] 16e5082af4d6c04afbbb06dccdad358cc0b940e794bdab57fa475c70e9310ec0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-102/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-102/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] ea3be58242bc2c670f53cc2e9c5a4f67bfe3ba0c48bf4efff245065ac66e8ebf
[INFO] running `Command { std: "docker" "start" "-a" "ea3be58242bc2c670f53cc2e9c5a4f67bfe3ba0c48bf4efff245065ac66e8ebf", kill_on_drop: false }`
[INFO] [stderr] warning: only one of `license` or `license-file` is necessary
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.13s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/minesweep-b3a95497b91b43ab)
[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" "ea3be58242bc2c670f53cc2e9c5a4f67bfe3ba0c48bf4efff245065ac66e8ebf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ea3be58242bc2c670f53cc2e9c5a4f67bfe3ba0c48bf4efff245065ac66e8ebf", kill_on_drop: false }`
[INFO] [stdout] ea3be58242bc2c670f53cc2e9c5a4f67bfe3ba0c48bf4efff245065ac66e8ebf