[INFO] fetching crate FerrousLearn 0.1.7...
[INFO] checking FerrousLearn-0.1.7 against 3154cc1a3e6424e44f438a95007d043ed5ceaaf6 for pr-133502-30
[INFO] extracting crate FerrousLearn 0.1.7 into /workspace/builds/worker-5-tc2/source
[INFO] started tweaking crates.io crate FerrousLearn 0.1.7
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate FerrousLearn 0.1.7
[INFO] tweaked toml for crates.io crate FerrousLearn 0.1.7 written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate FerrousLearn 0.1.7 on toolchain 3154cc1a3e6424e44f438a95007d043ed5ceaaf6
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+3154cc1a3e6424e44f438a95007d043ed5ceaaf6" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate FerrousLearn 0.1.7 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" "+3154cc1a3e6424e44f438a95007d043ed5ceaaf6" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,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" "-m" "1610612736" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:77db811e55d90add9212f6832c23229e3de5f1c1f9905e8cb07319ea15df73ac" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] 9113facdcb308f77f907152ae28c0caf51bba8c2951a48516d465a2406706691
[INFO] running `Command { std: "docker" "start" "9113facdcb308f77f907152ae28c0caf51bba8c2951a48516d465a2406706691", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9113facdcb308f77f907152ae28c0caf51bba8c2951a48516d465a2406706691", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-w" "/opt/rustwide/workdir" "--user" "0:0" "9113facdcb308f77f907152ae28c0caf51bba8c2951a48516d465a2406706691" "/opt/rustwide/cargo-home/bin/cargo" "+3154cc1a3e6424e44f438a95007d043ed5ceaaf6" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9113facdcb308f77f907152ae28c0caf51bba8c2951a48516d465a2406706691", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-w" "/opt/rustwide/workdir" "--user" "0:0" "9113facdcb308f77f907152ae28c0caf51bba8c2951a48516d465a2406706691" "/opt/rustwide/cargo-home/bin/cargo" "+3154cc1a3e6424e44f438a95007d043ed5ceaaf6" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr]     Checking FerrousLearn v0.1.7 (/opt/rustwide/workdir)
[INFO] [stdout] warning: fields `tol` and `whiten` are never read
[INFO] [stdout]    --> src/lib.rs:119:5
[INFO] [stdout]     |
[INFO] [stdout] 116 | pub struct PrincipalComponentAnalysis {
[INFO] [stdout]     |            -------------------------- fields in this struct
[INFO] [stdout] ...
[INFO] [stdout] 119 |     tol: f64,
[INFO] [stdout]     |     ^^^
[INFO] [stdout] 120 |     whiten: bool,
[INFO] [stdout]     |     ^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `sigmoid_vec` is never used
[INFO] [stdout]    --> src/lib.rs:384:4
[INFO] [stdout]     |
[INFO] [stdout] 384 | fn sigmoid_vec(data: &Vec<Vec<f64>>, weight: f64) -> Vec<Vec<f64>> {
[INFO] [stdout]     |    ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `matrix_vector_multiply` is never used
[INFO] [stdout]    --> src/lib.rs:437:4
[INFO] [stdout]     |
[INFO] [stdout] 437 | fn matrix_vector_multiply(matrix: &Vec<Vec<f64>>, vector: &Vec<f64>) -> Vec<f64> {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `normalise_vector` is never used
[INFO] [stdout]    --> src/lib.rs:524:4
[INFO] [stdout]     |
[INFO] [stdout] 524 | fn normalise_vector(vec: &Vec<f64>) -> Vec<f64> {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `qr_decomposition` is never used
[INFO] [stdout]    --> src/lib.rs:541:4
[INFO] [stdout]     |
[INFO] [stdout] 541 | fn qr_decomposition(matrix: &Vec<Vec<f64>>) -> (Vec<Vec<f64>>, Vec<Vec<f64>>) {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `is_zero_vector` is never used
[INFO] [stdout]    --> src/lib.rs:605:4
[INFO] [stdout]     |
[INFO] [stdout] 605 | fn is_zero_vector(vec: &Vec<f64>) -> bool {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `determinant` is never used
[INFO] [stdout]    --> src/lib.rs:660:4
[INFO] [stdout]     |
[INFO] [stdout] 660 | fn determinant(matrix: &Vec<Vec<f64>>) -> f64 {
[INFO] [stdout]     |    ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `lu_decomposition` is never used
[INFO] [stdout]    --> src/lib.rs:681:4
[INFO] [stdout]     |
[INFO] [stdout] 681 | fn lu_decomposition(matrix: &Vec<Vec<f64>>) -> (Vec<Vec<f64>>, Vec<Vec<f64>>) {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `determinant_from_lu` is never used
[INFO] [stdout]    --> src/lib.rs:718:4
[INFO] [stdout]     |
[INFO] [stdout] 718 | fn determinant_from_lu(u: &Vec<Vec<f64>>) -> f64 {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `calculate_eigenvalues` is never used
[INFO] [stdout]    --> src/lib.rs:725:4
[INFO] [stdout]     |
[INFO] [stdout] 725 | fn calculate_eigenvalues(matrix: Vec<Vec<f64>>) -> [f64; 2] {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main` is never used
[INFO] [stdout]    --> src/lib.rs:853:4
[INFO] [stdout]     |
[INFO] [stdout] 853 | fn main() {}
[INFO] [stdout]     |    ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `tol` and `whiten` are never read
[INFO] [stdout]    --> src/lib.rs:119:5
[INFO] [stdout]     |
[INFO] [stdout] 116 | pub struct PrincipalComponentAnalysis {
[INFO] [stdout]     |            -------------------------- fields in this struct
[INFO] [stdout] ...
[INFO] [stdout] 119 |     tol: f64,
[INFO] [stdout]     |     ^^^
[INFO] [stdout] 120 |     whiten: bool,
[INFO] [stdout]     |     ^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `normalise_vector` is never used
[INFO] [stdout]    --> src/lib.rs:524:4
[INFO] [stdout]     |
[INFO] [stdout] 524 | fn normalise_vector(vec: &Vec<f64>) -> Vec<f64> {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `qr_decomposition` is never used
[INFO] [stdout]    --> src/lib.rs:541:4
[INFO] [stdout]     |
[INFO] [stdout] 541 | fn qr_decomposition(matrix: &Vec<Vec<f64>>) -> (Vec<Vec<f64>>, Vec<Vec<f64>>) {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `is_zero_vector` is never used
[INFO] [stdout]    --> src/lib.rs:605:4
[INFO] [stdout]     |
[INFO] [stdout] 605 | fn is_zero_vector(vec: &Vec<f64>) -> bool {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `determinant` is never used
[INFO] [stdout]    --> src/lib.rs:660:4
[INFO] [stdout]     |
[INFO] [stdout] 660 | fn determinant(matrix: &Vec<Vec<f64>>) -> f64 {
[INFO] [stdout]     |    ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `lu_decomposition` is never used
[INFO] [stdout]    --> src/lib.rs:681:4
[INFO] [stdout]     |
[INFO] [stdout] 681 | fn lu_decomposition(matrix: &Vec<Vec<f64>>) -> (Vec<Vec<f64>>, Vec<Vec<f64>>) {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `determinant_from_lu` is never used
[INFO] [stdout]    --> src/lib.rs:718:4
[INFO] [stdout]     |
[INFO] [stdout] 718 | fn determinant_from_lu(u: &Vec<Vec<f64>>) -> f64 {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `calculate_eigenvalues` is never used
[INFO] [stdout]    --> src/lib.rs:725:4
[INFO] [stdout]     |
[INFO] [stdout] 725 | fn calculate_eigenvalues(matrix: Vec<Vec<f64>>) -> [f64; 2] {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0432]: unresolved import `ferrouslearn`
[INFO] [stdout]  --> examples/demo.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use ferrouslearn::{KMeans, LinearRegression, PrincipalComponentAnalysis};
[INFO] [stdout]   |     ^^^^^^^^^^^^ use of unresolved module or unlinked crate `ferrouslearn`
[INFO] [stdout]   |
[INFO] [stdout] help: there is a crate or module with a similar name
[INFO] [stdout]   |
[INFO] [stdout] 1 - use ferrouslearn::{KMeans, LinearRegression, PrincipalComponentAnalysis};
[INFO] [stdout] 1 + use FerrousLearn::{KMeans, LinearRegression, PrincipalComponentAnalysis};
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0432`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `FerrousLearn` (example "demo") due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "9113facdcb308f77f907152ae28c0caf51bba8c2951a48516d465a2406706691", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9113facdcb308f77f907152ae28c0caf51bba8c2951a48516d465a2406706691", kill_on_drop: false }`
[INFO] [stdout] 9113facdcb308f77f907152ae28c0caf51bba8c2951a48516d465a2406706691
