[INFO] cloning repository https://github.com/TechThrust/Rust-Simple-Linear-Regression
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/TechThrust/Rust-Simple-Linear-Regression" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FTechThrust%2FRust-Simple-Linear-Regression", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FTechThrust%2FRust-Simple-Linear-Regression'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 56797a588d47cf07e9fc430fb96e5e3fb356fc06
[INFO] testing TechThrust/Rust-Simple-Linear-Regression 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%2FTechThrust%2FRust-Simple-Linear-Regression" "/workspace/builds/worker-2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/TechThrust/Rust-Simple-Linear-Regression 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/TechThrust/Rust-Simple-Linear-Regression
[INFO] finished tweaking git repo https://github.com/TechThrust/Rust-Simple-Linear-Regression
[INFO] tweaked toml for git repo https://github.com/TechThrust/Rust-Simple-Linear-Regression written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate git repo https://github.com/TechThrust/Rust-Simple-Linear-Regression 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-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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] 8dc494e50dd8dbcb29840fdd8c944108cbc443d98b96d93153720be796156184
[INFO] running `Command { std: "docker" "start" "-a" "8dc494e50dd8dbcb29840fdd8c944108cbc443d98b96d93153720be796156184", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8dc494e50dd8dbcb29840fdd8c944108cbc443d98b96d93153720be796156184", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8dc494e50dd8dbcb29840fdd8c944108cbc443d98b96d93153720be796156184", kill_on_drop: false }`
[INFO] [stdout] 8dc494e50dd8dbcb29840fdd8c944108cbc443d98b96d93153720be796156184
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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] 5247561183d4c26b9b3f755431d6ddc9fd96e839e0088c91c1913a470b0978ad
[INFO] running `Command { std: "docker" "start" "-a" "5247561183d4c26b9b3f755431d6ddc9fd96e839e0088c91c1913a470b0978ad", kill_on_drop: false }`
[INFO] [stderr]    Compiling simple_regression v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.76s
[INFO] running `Command { std: "docker" "inspect" "5247561183d4c26b9b3f755431d6ddc9fd96e839e0088c91c1913a470b0978ad", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5247561183d4c26b9b3f755431d6ddc9fd96e839e0088c91c1913a470b0978ad", kill_on_drop: false }`
[INFO] [stdout] 5247561183d4c26b9b3f755431d6ddc9fd96e839e0088c91c1913a470b0978ad
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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] 8158f8d622221d7ce780db0ff792e940e08025bc57479b9a0c432916be9b1afe
[INFO] running `Command { std: "docker" "start" "-a" "8158f8d622221d7ce780db0ff792e940e08025bc57479b9a0c432916be9b1afe", kill_on_drop: false }`
[INFO] [stderr]    Compiling simple_regression v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.65s
[INFO] running `Command { std: "docker" "inspect" "8158f8d622221d7ce780db0ff792e940e08025bc57479b9a0c432916be9b1afe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8158f8d622221d7ce780db0ff792e940e08025bc57479b9a0c432916be9b1afe", kill_on_drop: false }`
[INFO] [stdout] 8158f8d622221d7ce780db0ff792e940e08025bc57479b9a0c432916be9b1afe
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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] ead4309937f919e86345149d2eba59550fdb4c4b174519a2ffd7bf999c4aaf34
[INFO] running `Command { std: "docker" "start" "-a" "ead4309937f919e86345149d2eba59550fdb4c4b174519a2ffd7bf999c4aaf34", 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/simple_regression-c375f3f34ed296e4)
[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" "ead4309937f919e86345149d2eba59550fdb4c4b174519a2ffd7bf999c4aaf34", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ead4309937f919e86345149d2eba59550fdb4c4b174519a2ffd7bf999c4aaf34", kill_on_drop: false }`
[INFO] [stdout] ead4309937f919e86345149d2eba59550fdb4c4b174519a2ffd7bf999c4aaf34