[INFO] cloning repository https://github.com/jmmoore34/MachineLearningCoursera
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/jmmoore34/MachineLearningCoursera" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjmmoore34%2FMachineLearningCoursera", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjmmoore34%2FMachineLearningCoursera'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 4f1ecc482cb80c88bdd475d2be9a554a57ebdd0d
[INFO] testing jmmoore34/MachineLearningCoursera against 1.95.0 for beta-1.96-2
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjmmoore34%2FMachineLearningCoursera" "/workspace/builds/worker-0-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/jmmoore34/MachineLearningCoursera
[INFO] finished tweaking git repo https://github.com/jmmoore34/MachineLearningCoursera
[INFO] tweaked toml for git repo https://github.com/jmmoore34/MachineLearningCoursera written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/jmmoore34/MachineLearningCoursera on toolchain 1.95.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.95.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/jmmoore34/MachineLearningCoursera already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.95.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+1.95.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 92ee71d0bbadaf5ddd53b73625a721e2c62afa7f4f841adf7351d782b90b7aa1
[INFO] running `Command { std: "docker" "start" "-a" "92ee71d0bbadaf5ddd53b73625a721e2c62afa7f4f841adf7351d782b90b7aa1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "92ee71d0bbadaf5ddd53b73625a721e2c62afa7f4f841adf7351d782b90b7aa1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "92ee71d0bbadaf5ddd53b73625a721e2c62afa7f4f841adf7351d782b90b7aa1", kill_on_drop: false }`
[INFO] [stdout] 92ee71d0bbadaf5ddd53b73625a721e2c62afa7f4f841adf7351d782b90b7aa1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/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" "RUSTDOCFLAGS=--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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+1.95.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 166c772e1a1b4d8567bd364222470a8fe0df70b3ae9833731ec3d5bc103cf6ba
[INFO] running `Command { std: "docker" "start" "-a" "166c772e1a1b4d8567bd364222470a8fe0df70b3ae9833731ec3d5bc103cf6ba", kill_on_drop: false }`
[INFO] [stderr]    Compiling LinearRegression v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `J_hist`
[INFO] [stdout]   --> src/main.rs:11:28
[INFO] [stdout]    |
[INFO] [stdout] 11 |     let (w_final, b_final, J_hist, p_hist) = gradient_descent(inputs, output, w_init, b_init, alpha,
[INFO] [stdout]    |                            ^^^^^^ help: if this is intentional, prefix it with an underscore: `_J_hist`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `p_hist`
[INFO] [stdout]   --> src/main.rs:11:36
[INFO] [stdout]    |
[INFO] [stdout] 11 |     let (w_final, b_final, J_hist, p_hist) = gradient_descent(inputs, output, w_init, b_init, alpha,
[INFO] [stdout]    |                                    ^^^^^^ help: if this is intentional, prefix it with an underscore: `_p_hist`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `J_hist` should have a snake case name
[INFO] [stdout]   --> src/main.rs:11:28
[INFO] [stdout]    |
[INFO] [stdout] 11 |     let (w_final, b_final, J_hist, p_hist) = gradient_descent(inputs, output, w_init, b_init, alpha,
[INFO] [stdout]    |                            ^^^^^^ help: convert the identifier to snake case: `j_hist`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_snake_case)]` (part of `#[warn(nonstandard_style)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.25s
[INFO] running `Command { std: "docker" "inspect" "166c772e1a1b4d8567bd364222470a8fe0df70b3ae9833731ec3d5bc103cf6ba", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "166c772e1a1b4d8567bd364222470a8fe0df70b3ae9833731ec3d5bc103cf6ba", kill_on_drop: false }`
[INFO] [stdout] 166c772e1a1b4d8567bd364222470a8fe0df70b3ae9833731ec3d5bc103cf6ba
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/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" "RUSTDOCFLAGS=--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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+1.95.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ccd13f27ac1b700c9e58e875e829332320eb2f4e7b90f0fe33b21ebca9b104a7
[INFO] running `Command { std: "docker" "start" "-a" "ccd13f27ac1b700c9e58e875e829332320eb2f4e7b90f0fe33b21ebca9b104a7", kill_on_drop: false }`
[INFO] [stderr]    Compiling LinearRegression v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `J_hist`
[INFO] [stdout]   --> src/main.rs:11:28
[INFO] [stdout]    |
[INFO] [stdout] 11 |     let (w_final, b_final, J_hist, p_hist) = gradient_descent(inputs, output, w_init, b_init, alpha,
[INFO] [stdout]    |                            ^^^^^^ help: if this is intentional, prefix it with an underscore: `_J_hist`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `p_hist`
[INFO] [stdout]   --> src/main.rs:11:36
[INFO] [stdout]    |
[INFO] [stdout] 11 |     let (w_final, b_final, J_hist, p_hist) = gradient_descent(inputs, output, w_init, b_init, alpha,
[INFO] [stdout]    |                                    ^^^^^^ help: if this is intentional, prefix it with an underscore: `_p_hist`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `J_hist` should have a snake case name
[INFO] [stdout]   --> src/main.rs:11:28
[INFO] [stdout]    |
[INFO] [stdout] 11 |     let (w_final, b_final, J_hist, p_hist) = gradient_descent(inputs, output, w_init, b_init, alpha,
[INFO] [stdout]    |                            ^^^^^^ help: convert the identifier to snake case: `j_hist`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_snake_case)]` (part of `#[warn(nonstandard_style)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.27s
[INFO] running `Command { std: "docker" "inspect" "ccd13f27ac1b700c9e58e875e829332320eb2f4e7b90f0fe33b21ebca9b104a7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ccd13f27ac1b700c9e58e875e829332320eb2f4e7b90f0fe33b21ebca9b104a7", kill_on_drop: false }`
[INFO] [stdout] ccd13f27ac1b700c9e58e875e829332320eb2f4e7b90f0fe33b21ebca9b104a7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/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" "RUSTDOCFLAGS=--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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+1.95.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 1bed40bf65dd855a913b5017110cc5a53ca1ec34f92a44e479a11cc28f9e6e5d
[INFO] running `Command { std: "docker" "start" "-a" "1bed40bf65dd855a913b5017110cc5a53ca1ec34f92a44e479a11cc28f9e6e5d", kill_on_drop: false }`
[INFO] [stderr] warning: unused variable: `J_hist`
[INFO] [stdout] 
[INFO] [stderr]   --> src/main.rs:11:28
[INFO] [stdout] running 0 tests
[INFO] [stderr]    |
[INFO] [stdout] 
[INFO] [stderr] 11 |     let (w_final, b_final, J_hist, p_hist) = gradient_descent(inputs, output, w_init, b_init, alpha,
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stderr]    |                            ^^^^^^ help: if this is intentional, prefix it with an underscore: `_J_hist`
[INFO] [stdout] 
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `p_hist`
[INFO] [stderr]   --> src/main.rs:11:36
[INFO] [stderr]    |
[INFO] [stderr] 11 |     let (w_final, b_final, J_hist, p_hist) = gradient_descent(inputs, output, w_init, b_init, alpha,
[INFO] [stderr]    |                                    ^^^^^^ help: if this is intentional, prefix it with an underscore: `_p_hist`
[INFO] [stderr] 
[INFO] [stderr] warning: variable `J_hist` should have a snake case name
[INFO] [stderr]   --> src/main.rs:11:28
[INFO] [stderr]    |
[INFO] [stderr] 11 |     let (w_final, b_final, J_hist, p_hist) = gradient_descent(inputs, output, w_init, b_init, alpha,
[INFO] [stderr]    |                            ^^^^^^ help: convert the identifier to snake case: `j_hist`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(non_snake_case)]` (part of `#[warn(nonstandard_style)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `LinearRegression` (bin "LinearRegression" test) generated 3 warnings (run `cargo fix --bin "LinearRegression" -p LinearRegression --tests` to apply 2 suggestions)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/LinearRegression-46be02cc3f6c46c7)
[INFO] running `Command { std: "docker" "inspect" "1bed40bf65dd855a913b5017110cc5a53ca1ec34f92a44e479a11cc28f9e6e5d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1bed40bf65dd855a913b5017110cc5a53ca1ec34f92a44e479a11cc28f9e6e5d", kill_on_drop: false }`
[INFO] [stdout] 1bed40bf65dd855a913b5017110cc5a53ca1ec34f92a44e479a11cc28f9e6e5d
