[INFO] cloning repository https://github.com/ryanplusplus/guessing_game.rs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ryanplusplus/guessing_game.rs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fryanplusplus%2Fguessing_game.rs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fryanplusplus%2Fguessing_game.rs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 63a3598ace25602e8ec4f89e912935aab6732ef3
[INFO] testing ryanplusplus/guessing_game.rs against 1.55.0 for beta-1.56-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fryanplusplus%2Fguessing_game.rs" "/workspace/builds/worker-13/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-13/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/ryanplusplus/guessing_game.rs 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/ryanplusplus/guessing_game.rs
[INFO] finished tweaking git repo https://github.com/ryanplusplus/guessing_game.rs
[INFO] tweaked toml for git repo https://github.com/ryanplusplus/guessing_game.rs written to /workspace/builds/worker-13/source/Cargo.toml
[INFO] crate git repo https://github.com/ryanplusplus/guessing_game.rs 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-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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] 83c97428269309818c9df8eb1b3208ff8c60ff6147553159d69e176b6240e2cd
[INFO] running `Command { std: "docker" "start" "-a" "83c97428269309818c9df8eb1b3208ff8c60ff6147553159d69e176b6240e2cd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "83c97428269309818c9df8eb1b3208ff8c60ff6147553159d69e176b6240e2cd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "83c97428269309818c9df8eb1b3208ff8c60ff6147553159d69e176b6240e2cd", kill_on_drop: false }`
[INFO] [stdout] 83c97428269309818c9df8eb1b3208ff8c60ff6147553159d69e176b6240e2cd
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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] 7da1519a7f396a8fe69af07e0cf412782cc3f66836397154ddb6e1fb031f84ae
[INFO] running `Command { std: "docker" "start" "-a" "7da1519a7f396a8fe69af07e0cf412782cc3f66836397154ddb6e1fb031f84ae", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.58
[INFO] [stderr]    Compiling rand v0.4.6
[INFO] [stderr]    Compiling rand v0.3.23
[INFO] [stderr]    Compiling guessing_game v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.76s
[INFO] running `Command { std: "docker" "inspect" "7da1519a7f396a8fe69af07e0cf412782cc3f66836397154ddb6e1fb031f84ae", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7da1519a7f396a8fe69af07e0cf412782cc3f66836397154ddb6e1fb031f84ae", kill_on_drop: false }`
[INFO] [stdout] 7da1519a7f396a8fe69af07e0cf412782cc3f66836397154ddb6e1fb031f84ae
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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] f9c4006c3dfb8454eba516219cf1d9da2b3c7422de711303ee25f851965cf7b1
[INFO] running `Command { std: "docker" "start" "-a" "f9c4006c3dfb8454eba516219cf1d9da2b3c7422de711303ee25f851965cf7b1", kill_on_drop: false }`
[INFO] [stderr]    Compiling guessing_game v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.57s
[INFO] running `Command { std: "docker" "inspect" "f9c4006c3dfb8454eba516219cf1d9da2b3c7422de711303ee25f851965cf7b1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f9c4006c3dfb8454eba516219cf1d9da2b3c7422de711303ee25f851965cf7b1", kill_on_drop: false }`
[INFO] [stdout] f9c4006c3dfb8454eba516219cf1d9da2b3c7422de711303ee25f851965cf7b1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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] 0e15637b0fc238da0cac014960c196fc8d33f24893e6823dfc00a8a6d2627451
[INFO] running `Command { std: "docker" "start" "-a" "0e15637b0fc238da0cac014960c196fc8d33f24893e6823dfc00a8a6d2627451", kill_on_drop: false }`
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stdout] running 0 tests
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/guessing_game-42ed3815196e6492)
[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" "0e15637b0fc238da0cac014960c196fc8d33f24893e6823dfc00a8a6d2627451", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0e15637b0fc238da0cac014960c196fc8d33f24893e6823dfc00a8a6d2627451", kill_on_drop: false }`
[INFO] [stdout] 0e15637b0fc238da0cac014960c196fc8d33f24893e6823dfc00a8a6d2627451