[INFO] fetching crate statslib 0.1.0...
[INFO] testing statslib-0.1.0 against beta-2026-04-21 for beta-1.96-2
[INFO] extracting crate statslib 0.1.0 into /workspace/builds/worker-2-tc2/source
[INFO] started tweaking crates.io crate statslib 0.1.0
[INFO] finished tweaking crates.io crate statslib 0.1.0
[INFO] tweaked toml for crates.io crate statslib 0.1.0 written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate statslib 0.1.0 on toolchain beta-2026-04-21
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2026-04-21" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2026-04-21" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 88 packages to latest compatible versions
[INFO] [stderr]       Adding approx v0.4.0 (available: v0.5.1)
[INFO] [stderr]       Adding argmin v0.4.7 (available: v0.11.0)
[INFO] [stderr]       Adding nalgebra v0.26.2 (available: v0.34.2)
[INFO] [stderr]       Adding rand v0.8.6 (available: v0.10.1)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2026-04-21" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-04-21" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 471737ef456e14af64011c3880976f64b672949874f819a6d0a9ac81371b1a09
[INFO] running `Command { std: "docker" "start" "-a" "471737ef456e14af64011c3880976f64b672949874f819a6d0a9ac81371b1a09", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "471737ef456e14af64011c3880976f64b672949874f819a6d0a9ac81371b1a09", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "471737ef456e14af64011c3880976f64b672949874f819a6d0a9ac81371b1a09", kill_on_drop: false }`
[INFO] [stdout] 471737ef456e14af64011c3880976f64b672949874f819a6d0a9ac81371b1a09
[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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-04-21" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6a6c62a920a7926937385ccffe7b1500155916f22569a719379469cfc7cbdb9b
[INFO] running `Command { std: "docker" "start" "-a" "6a6c62a920a7926937385ccffe7b1500155916f22569a719379469cfc7cbdb9b", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde_core v1.0.228
[INFO] [stderr]    Compiling serde v1.0.228
[INFO] [stderr]    Compiling num-rational v0.3.2
[INFO] [stderr]    Compiling time v0.3.47
[INFO] [stderr]    Compiling matrixmultiply v0.3.10
[INFO] [stderr]    Compiling ppv-lite86 v0.2.21
[INFO] [stderr]    Compiling num-complex v0.4.6
[INFO] [stderr]    Compiling approx v0.4.0
[INFO] [stderr]    Compiling num-complex v0.3.1
[INFO] [stderr]    Compiling thiserror-impl v1.0.69
[INFO] [stderr]    Compiling rawpointer v0.2.1
[INFO] [stderr]    Compiling approx v0.5.1
[INFO] [stderr]    Compiling instant v0.1.13
[INFO] [stderr]    Compiling num v0.4.3
[INFO] [stderr]    Compiling simba v0.4.0
[INFO] [stderr]    Compiling thiserror v1.0.69
[INFO] [stderr]    Compiling serde_json v1.0.149
[INFO] [stderr]    Compiling erased-serde v0.3.31
[INFO] [stderr]    Compiling rand_core v0.6.4
[INFO] [stderr]    Compiling bincode v1.3.3
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling rand_xorshift v0.3.0
[INFO] [stderr]    Compiling rand v0.8.6
[INFO] [stderr]    Compiling slog v2.8.2
[INFO] [stderr]    Compiling nalgebra v0.26.2
[INFO] [stderr]    Compiling slog-async v2.8.0
[INFO] [stderr]    Compiling slog-json v2.6.1
[INFO] [stderr]    Compiling slog-term v2.9.2
[INFO] [stderr]    Compiling argmin v0.4.7
[INFO] [stderr]    Compiling statslib v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused imports: `ArrayStorage` and `Matrix2`
[INFO] [stdout]  --> src/linear_models/simple_regression.rs:1:16
[INFO] [stdout]   |
[INFO] [stdout] 1 | use nalgebra::{ArrayStorage, Matrix2};
[INFO] [stdout]   |                ^^^^^^^^^^^^  ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `ParamsLM` is never constructed
[INFO] [stdout]  --> src/linear_models/simple_regression.rs:7:8
[INFO] [stdout]   |
[INFO] [stdout] 7 | struct ParamsLM {
[INFO] [stdout]   |        ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 19.35s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: argmin v0.4.7, nalgebra v0.26.2
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 2`
[INFO] running `Command { std: "docker" "inspect" "6a6c62a920a7926937385ccffe7b1500155916f22569a719379469cfc7cbdb9b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6a6c62a920a7926937385ccffe7b1500155916f22569a719379469cfc7cbdb9b", kill_on_drop: false }`
[INFO] [stdout] 6a6c62a920a7926937385ccffe7b1500155916f22569a719379469cfc7cbdb9b
[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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-04-21" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e7f459785bfe6b3059568723a0874e092975e930e6a667ded71cfc412cb8d8f0
[INFO] running `Command { std: "docker" "start" "-a" "e7f459785bfe6b3059568723a0874e092975e930e6a667ded71cfc412cb8d8f0", kill_on_drop: false }`
[INFO] [stdout] warning: unused imports: `ArrayStorage` and `Matrix2`
[INFO] [stdout]  --> src/linear_models/simple_regression.rs:1:16
[INFO] [stdout]   |
[INFO] [stdout] 1 | use nalgebra::{ArrayStorage, Matrix2};
[INFO] [stdout]   |                ^^^^^^^^^^^^  ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling statslib v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: struct `ParamsLM` is never constructed
[INFO] [stdout]  --> src/linear_models/simple_regression.rs:7:8
[INFO] [stdout]   |
[INFO] [stdout] 7 | struct ParamsLM {
[INFO] [stdout]   |        ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `ArrayStorage` and `Matrix2`
[INFO] [stdout]  --> src/linear_models/simple_regression.rs:1:16
[INFO] [stdout]   |
[INFO] [stdout] 1 | use nalgebra::{ArrayStorage, Matrix2};
[INFO] [stdout]   |                ^^^^^^^^^^^^  ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `ParamsLM` is never constructed
[INFO] [stdout]  --> src/linear_models/simple_regression.rs:7:8
[INFO] [stdout]   |
[INFO] [stdout] 7 | struct ParamsLM {
[INFO] [stdout]   |        ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.43s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: argmin v0.4.7, nalgebra v0.26.2
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 2`
[INFO] running `Command { std: "docker" "inspect" "e7f459785bfe6b3059568723a0874e092975e930e6a667ded71cfc412cb8d8f0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e7f459785bfe6b3059568723a0874e092975e930e6a667ded71cfc412cb8d8f0", kill_on_drop: false }`
[INFO] [stdout] e7f459785bfe6b3059568723a0874e092975e930e6a667ded71cfc412cb8d8f0
[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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-04-21" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 0b59f19cc6a8e90ebb32ea227ff3fe78113581fbf60016fb4f0c08e4d38cc8fe
[INFO] running `Command { std: "docker" "start" "-a" "0b59f19cc6a8e90ebb32ea227ff3fe78113581fbf60016fb4f0c08e4d38cc8fe", kill_on_drop: false }`
[INFO] [stderr] warning: unused imports: `ArrayStorage` and `Matrix2`
[INFO] [stderr]  --> src/linear_models/simple_regression.rs:1:16
[INFO] [stderr]   |
[INFO] [stderr] 1 | use nalgebra::{ArrayStorage, Matrix2};
[INFO] [stderr]   |                ^^^^^^^^^^^^  ^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: struct `ParamsLM` is never constructed
[INFO] [stderr]  --> src/linear_models/simple_regression.rs:7:8
[INFO] [stderr]   |
[INFO] [stderr] 7 | struct ParamsLM {
[INFO] [stderr]   |        ^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `statslib` (lib) generated 2 warnings (run `cargo fix --lib -p statslib` to apply 1 suggestion)
[INFO] [stderr] warning: `statslib` (lib test) generated 2 warnings (2 duplicates)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.08s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: argmin v0.4.7, nalgebra v0.26.2
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 2`
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/statslib-6b791824b0da5de3)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests statslib
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[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" "0b59f19cc6a8e90ebb32ea227ff3fe78113581fbf60016fb4f0c08e4d38cc8fe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0b59f19cc6a8e90ebb32ea227ff3fe78113581fbf60016fb4f0c08e4d38cc8fe", kill_on_drop: false }`
[INFO] [stdout] 0b59f19cc6a8e90ebb32ea227ff3fe78113581fbf60016fb4f0c08e4d38cc8fe
