[INFO] cloning repository https://github.com/tmsc4zht/rust_control_flow_exercise
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/tmsc4zht/rust_control_flow_exercise" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftmsc4zht%2Frust_control_flow_exercise", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftmsc4zht%2Frust_control_flow_exercise'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] cdbacba356a3393fc6baf48c50536f3e59f9ce4b
[INFO] testing tmsc4zht/rust_control_flow_exercise against beta-2021-09-08 for beta-1.56-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftmsc4zht%2Frust_control_flow_exercise" "/workspace/builds/worker-99/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-99/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/tmsc4zht/rust_control_flow_exercise on toolchain beta-2021-09-08
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/tmsc4zht/rust_control_flow_exercise
[INFO] finished tweaking git repo https://github.com/tmsc4zht/rust_control_flow_exercise
[INFO] tweaked toml for git repo https://github.com/tmsc4zht/rust_control_flow_exercise written to /workspace/builds/worker-99/source/Cargo.toml
[INFO] crate git repo https://github.com/tmsc4zht/rust_control_flow_exercise already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-99/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-99/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" "+beta-2021-09-08" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d9b86a6829011dd2db2109f41bfc4a5bd2b366aff90e7e2e61a248de5e87322a
[INFO] running `Command { std: "docker" "start" "-a" "d9b86a6829011dd2db2109f41bfc4a5bd2b366aff90e7e2e61a248de5e87322a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d9b86a6829011dd2db2109f41bfc4a5bd2b366aff90e7e2e61a248de5e87322a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d9b86a6829011dd2db2109f41bfc4a5bd2b366aff90e7e2e61a248de5e87322a", kill_on_drop: false }`
[INFO] [stdout] d9b86a6829011dd2db2109f41bfc4a5bd2b366aff90e7e2e61a248de5e87322a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-99/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-99/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" "+beta-2021-09-08" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 14e086235bbc96dcdaea42a793d6710f4acc4ce93789233316f402bd9168ddb0
[INFO] running `Command { std: "docker" "start" "-a" "14e086235bbc96dcdaea42a793d6710f4acc4ce93789233316f402bd9168ddb0", kill_on_drop: false }`
[INFO] [stderr]    Compiling rust_control_flow_exercise v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.86s
[INFO] running `Command { std: "docker" "inspect" "14e086235bbc96dcdaea42a793d6710f4acc4ce93789233316f402bd9168ddb0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "14e086235bbc96dcdaea42a793d6710f4acc4ce93789233316f402bd9168ddb0", kill_on_drop: false }`
[INFO] [stdout] 14e086235bbc96dcdaea42a793d6710f4acc4ce93789233316f402bd9168ddb0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-99/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-99/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" "+beta-2021-09-08" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6465b7d0570dd75e64672fd9f5afe48031b8381b2260ae58d25e27d8d8c7d5c4
[INFO] running `Command { std: "docker" "start" "-a" "6465b7d0570dd75e64672fd9f5afe48031b8381b2260ae58d25e27d8d8c7d5c4", kill_on_drop: false }`
[INFO] [stderr]    Compiling rust_control_flow_exercise v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.63s
[INFO] running `Command { std: "docker" "inspect" "6465b7d0570dd75e64672fd9f5afe48031b8381b2260ae58d25e27d8d8c7d5c4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6465b7d0570dd75e64672fd9f5afe48031b8381b2260ae58d25e27d8d8c7d5c4", kill_on_drop: false }`
[INFO] [stdout] 6465b7d0570dd75e64672fd9f5afe48031b8381b2260ae58d25e27d8d8c7d5c4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-99/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-99/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" "+beta-2021-09-08" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 74c5357aaae4b1140ad82244b3194cd1735d86506a491fd9d1c0b66284e631e8
[INFO] running `Command { std: "docker" "start" "-a" "74c5357aaae4b1140ad82244b3194cd1735d86506a491fd9d1c0b66284e631e8", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.05s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/rust_control_flow_exercise-d308699f9ccacd5d)
[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" "74c5357aaae4b1140ad82244b3194cd1735d86506a491fd9d1c0b66284e631e8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "74c5357aaae4b1140ad82244b3194cd1735d86506a491fd9d1c0b66284e631e8", kill_on_drop: false }`
[INFO] [stdout] 74c5357aaae4b1140ad82244b3194cd1735d86506a491fd9d1c0b66284e631e8