[INFO] cloning repository https://github.com/IAMIQBAL/Linear-Regression-Rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/IAMIQBAL/Linear-Regression-Rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FIAMIQBAL%2FLinear-Regression-Rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FIAMIQBAL%2FLinear-Regression-Rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 74136cb17b3a6c7cb5a436dcd94d89d78cfdd9c6
[INFO] testing IAMIQBAL/Linear-Regression-Rust against 1.55.0 for beta-1.56-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FIAMIQBAL%2FLinear-Regression-Rust" "/workspace/builds/worker-15/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-15/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/IAMIQBAL/Linear-Regression-Rust 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/IAMIQBAL/Linear-Regression-Rust
[INFO] finished tweaking git repo https://github.com/IAMIQBAL/Linear-Regression-Rust
[INFO] tweaked toml for git repo https://github.com/IAMIQBAL/Linear-Regression-Rust written to /workspace/builds/worker-15/source/Cargo.toml
[INFO] crate git repo https://github.com/IAMIQBAL/Linear-Regression-Rust 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]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/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] 7934b9963e267ebc3d21f6b2fa42bca3489ebbcc4bc78b1737829285d98a253d
[INFO] running `Command { std: "docker" "start" "-a" "7934b9963e267ebc3d21f6b2fa42bca3489ebbcc4bc78b1737829285d98a253d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7934b9963e267ebc3d21f6b2fa42bca3489ebbcc4bc78b1737829285d98a253d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7934b9963e267ebc3d21f6b2fa42bca3489ebbcc4bc78b1737829285d98a253d", kill_on_drop: false }`
[INFO] [stdout] 7934b9963e267ebc3d21f6b2fa42bca3489ebbcc4bc78b1737829285d98a253d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/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] cad125d9238796e0683299af56c0315ac1f2c8c4797b90f1a9264c0e3f9f0e5b
[INFO] running `Command { std: "docker" "start" "-a" "cad125d9238796e0683299af56c0315ac1f2c8c4797b90f1a9264c0e3f9f0e5b", kill_on_drop: false }`
[INFO] [stderr]    Compiling linear_regression v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.60s
[INFO] running `Command { std: "docker" "inspect" "cad125d9238796e0683299af56c0315ac1f2c8c4797b90f1a9264c0e3f9f0e5b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cad125d9238796e0683299af56c0315ac1f2c8c4797b90f1a9264c0e3f9f0e5b", kill_on_drop: false }`
[INFO] [stdout] cad125d9238796e0683299af56c0315ac1f2c8c4797b90f1a9264c0e3f9f0e5b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/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] ef85b27561d80df22fa312b647271dc2c45b5bc37db47566cbcb516889419574
[INFO] running `Command { std: "docker" "start" "-a" "ef85b27561d80df22fa312b647271dc2c45b5bc37db47566cbcb516889419574", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling linear_regression v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.89s
[INFO] running `Command { std: "docker" "inspect" "ef85b27561d80df22fa312b647271dc2c45b5bc37db47566cbcb516889419574", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ef85b27561d80df22fa312b647271dc2c45b5bc37db47566cbcb516889419574", kill_on_drop: false }`
[INFO] [stdout] ef85b27561d80df22fa312b647271dc2c45b5bc37db47566cbcb516889419574
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/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] 8bfa38940ce5c2d8ae22b056cad86793915e96d5427298767ba08017c41c7c8c
[INFO] running `Command { std: "docker" "start" "-a" "8bfa38940ce5c2d8ae22b056cad86793915e96d5427298767ba08017c41c7c8c", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.44s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/linear_regression-67ffe03ed21ed970)
[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" "8bfa38940ce5c2d8ae22b056cad86793915e96d5427298767ba08017c41c7c8c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8bfa38940ce5c2d8ae22b056cad86793915e96d5427298767ba08017c41c7c8c", kill_on_drop: false }`
[INFO] [stdout] 8bfa38940ce5c2d8ae22b056cad86793915e96d5427298767ba08017c41c7c8c