[INFO] cloning repository https://github.com/randomfunction/Nabla
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/randomfunction/Nabla" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frandomfunction%2FNabla", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frandomfunction%2FNabla'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 563637e6922f86db181e91e324e1fae308d4350c
[INFO] testing randomfunction/Nabla against beta-2025-09-21 for beta-1.91-2
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frandomfunction%2FNabla" "/workspace/builds/worker-2-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/randomfunction/Nabla
[INFO] finished tweaking git repo https://github.com/randomfunction/Nabla
[INFO] tweaked toml for git repo https://github.com/randomfunction/Nabla written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/randomfunction/Nabla on toolchain beta-2025-09-21
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2025-09-21" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/randomfunction/Nabla 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" "+beta-2025-09-21" "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] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded cauchy v0.4.0
[INFO] [stderr]   Downloaded katexit v0.1.5
[INFO] [stderr]   Downloaded ndarray-linalg v0.16.0
[INFO] [stderr]   Downloaded lax v0.16.0
[INFO] [stderr]   Downloaded cblas-sys v0.1.4
[INFO] [stderr]   Downloaded num-complex v0.4.6
[INFO] [stderr]   Downloaded matrixmultiply v0.3.10
[INFO] [stderr]   Downloaded ndarray v0.15.6
[INFO] [stderr]   Downloaded lapack-sys v0.14.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 73b7c688afd0ac02cde9149d7707356c69a8ae1caac6ad05d3d82623495f2652
[INFO] running `Command { std: "docker" "start" "-a" "73b7c688afd0ac02cde9149d7707356c69a8ae1caac6ad05d3d82623495f2652", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "73b7c688afd0ac02cde9149d7707356c69a8ae1caac6ad05d3d82623495f2652", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "73b7c688afd0ac02cde9149d7707356c69a8ae1caac6ad05d3d82623495f2652", kill_on_drop: false }`
[INFO] [stdout] 73b7c688afd0ac02cde9149d7707356c69a8ae1caac6ad05d3d82623495f2652
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 87bf014a51aa3e07fc8c18e6514fcf341e8d66d6fdec0f7840ad69627f1d0f04
[INFO] running `Command { std: "docker" "start" "-a" "87bf014a51aa3e07fc8c18e6514fcf341e8d66d6fdec0f7840ad69627f1d0f04", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.172
[INFO] [stderr]    Compiling zerocopy v0.8.25
[INFO] [stderr]    Compiling proc-macro2 v1.0.95
[INFO] [stderr]    Compiling serde v1.0.219
[INFO] [stderr]    Compiling matrixmultiply v0.3.10
[INFO] [stderr]    Compiling num-integer v0.1.46
[INFO] [stderr]    Compiling approx v0.4.0
[INFO] [stderr]    Compiling quote v1.0.40
[INFO] [stderr]    Compiling getrandom v0.2.16
[INFO] [stderr]    Compiling lapack-sys v0.14.0
[INFO] [stderr]    Compiling cblas-sys v0.1.4
[INFO] [stderr]    Compiling rand_core v0.6.4
[INFO] [stderr]    Compiling syn v2.0.101
[INFO] [stderr]    Compiling ppv-lite86 v0.2.21
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling rand v0.8.5
[INFO] [stderr]    Compiling num-complex v0.4.6
[INFO] [stderr]    Compiling cauchy v0.4.0
[INFO] [stderr]    Compiling ndarray v0.15.6
[INFO] [stderr]    Compiling thiserror-impl v1.0.69
[INFO] [stderr]    Compiling katexit v0.1.5
[INFO] [stderr]    Compiling thiserror v1.0.69
[INFO] [stderr]    Compiling lax v0.16.0
[INFO] [stderr]    Compiling ndarray-linalg v0.16.0
[INFO] [stderr]    Compiling Learn_rs v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/linear_regression.rs:22:13
[INFO] [stdout]    |
[INFO] [stdout] 22 |         let mut x_aug: Vec<Vec<f64>> = self
[INFO] [stdout]    |             ----^^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 23.80s
[INFO] running `Command { std: "docker" "inspect" "87bf014a51aa3e07fc8c18e6514fcf341e8d66d6fdec0f7840ad69627f1d0f04", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "87bf014a51aa3e07fc8c18e6514fcf341e8d66d6fdec0f7840ad69627f1d0f04", kill_on_drop: false }`
[INFO] [stdout] 87bf014a51aa3e07fc8c18e6514fcf341e8d66d6fdec0f7840ad69627f1d0f04
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c5995ca5aff59a0996cf160aa420653f267ce5e6967fed0b179228f63aad8a7c
[INFO] running `Command { std: "docker" "start" "-a" "c5995ca5aff59a0996cf160aa420653f267ce5e6967fed0b179228f63aad8a7c", kill_on_drop: false }`
[INFO] [stderr]    Compiling Learn_rs v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/linear_regression.rs:22:13
[INFO] [stdout]    |
[INFO] [stdout] 22 |         let mut x_aug: Vec<Vec<f64>> = self
[INFO] [stdout]    |             ----^^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.39s
[INFO] running `Command { std: "docker" "inspect" "c5995ca5aff59a0996cf160aa420653f267ce5e6967fed0b179228f63aad8a7c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c5995ca5aff59a0996cf160aa420653f267ce5e6967fed0b179228f63aad8a7c", kill_on_drop: false }`
[INFO] [stdout] c5995ca5aff59a0996cf160aa420653f267ce5e6967fed0b179228f63aad8a7c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] cdf8ed8cc2a539145250b303d1098a757f0b2f3792f41f51aa5d8d94f24830c2
[INFO] running `Command { std: "docker" "start" "-a" "cdf8ed8cc2a539145250b303d1098a757f0b2f3792f41f51aa5d8d94f24830c2", kill_on_drop: false }`
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/linear_regression.rs:22:13
[INFO] [stderr]    |
[INFO] [stderr] 22 |         let mut x_aug: Vec<Vec<f64>> = self
[INFO] [stderr]    |             ----^^^^^
[INFO] [stderr]    |             |
[INFO] [stderr]    |             help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `Learn_rs` (bin "Learn_rs" test) generated 1 warning (run `cargo fix --bin "Learn_rs" --tests` to apply 1 suggestion)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.17s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/Learn_rs-ebd7ab5781774b1d)
[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" "cdf8ed8cc2a539145250b303d1098a757f0b2f3792f41f51aa5d8d94f24830c2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cdf8ed8cc2a539145250b303d1098a757f0b2f3792f41f51aa5d8d94f24830c2", kill_on_drop: false }`
[INFO] [stdout] cdf8ed8cc2a539145250b303d1098a757f0b2f3792f41f51aa5d8d94f24830c2