[INFO] cloning repository https://github.com/CHarrod283/ml-rs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/CHarrod283/ml-rs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FCHarrod283%2Fml-rs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FCHarrod283%2Fml-rs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] a3e7314ea768edf2cdc8c3e3e8711796c171fc60
[INFO] checking CHarrod283/ml-rs against try#93086cfebfccb79083c59d0d3b2052944bba643c for pr-146440-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FCHarrod283%2Fml-rs" "/workspace/builds/worker-1-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/CHarrod283/ml-rs
[INFO] finished tweaking git repo https://github.com/CHarrod283/ml-rs
[INFO] tweaked toml for git repo https://github.com/CHarrod283/ml-rs written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/CHarrod283/ml-rs on toolchain 93086cfebfccb79083c59d0d3b2052944bba643c
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+93086cfebfccb79083c59d0d3b2052944bba643c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/CHarrod283/ml-rs 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" "+93086cfebfccb79083c59d0d3b2052944bba643c" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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" "+93086cfebfccb79083c59d0d3b2052944bba643c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 3e5c6815d6ce471c59b8691942df6494947e46840525f748f6248e4f209e4bf0
[INFO] running `Command { std: "docker" "start" "-a" "3e5c6815d6ce471c59b8691942df6494947e46840525f748f6248e4f209e4bf0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3e5c6815d6ce471c59b8691942df6494947e46840525f748f6248e4f209e4bf0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3e5c6815d6ce471c59b8691942df6494947e46840525f748f6248e4f209e4bf0", kill_on_drop: false }`
[INFO] [stdout] 3e5c6815d6ce471c59b8691942df6494947e46840525f748f6248e4f209e4bf0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-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" "+93086cfebfccb79083c59d0d3b2052944bba643c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b33eb866064e4f874106eb64c622b153f3be7924f495d33889c860e268a531d2
[INFO] running `Command { std: "docker" "start" "-a" "b33eb866064e4f874106eb64c622b153f3be7924f495d33889c860e268a531d2", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.1.0
[INFO] [stderr]    Compiling libc v0.2.131
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]     Checking ppv-lite86 v0.2.16
[INFO] [stderr]     Checking rawpointer v0.2.1
[INFO] [stderr]     Checking matrixmultiply v0.3.2
[INFO] [stderr]    Compiling num-traits v0.2.15
[INFO] [stderr]    Compiling num-integer v0.1.45
[INFO] [stderr]    Compiling num-bigint v0.4.3
[INFO] [stderr]    Compiling num-iter v0.1.43
[INFO] [stderr]    Compiling num-rational v0.4.1
[INFO] [stderr]     Checking getrandom v0.2.7
[INFO] [stderr]     Checking rand_core v0.6.3
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking num-complex v0.4.2
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking ndarray v0.15.6
[INFO] [stderr]     Checking num v0.4.0
[INFO] [stderr]     Checking matrix v0.1.0 (/opt/rustwide/workdir/src/matrix)
[INFO] [stdout] warning: unused import: `Zip`
[INFO] [stdout]  --> src/matrix/src/lib.rs:4:17
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::iter::{Zip};
[INFO] [stdout]   |                 ^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: struct `MatrixView` is never constructed
[INFO] [stdout]   --> src/matrix/src/lib.rs:18:12
[INFO] [stdout]    |
[INFO] [stdout] 18 | pub struct MatrixView<'a> {
[INFO] [stdout]    |            ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `pub` struct has private fields, no public constructor, and is not otherwise reachable through the external API, so consider providing a public constructor or removing it
[INFO] [stdout]    = note: `#[deny(unused_unconstructable_pub_structs)]` (part of `#[deny(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `MatrixIter` is never used
[INFO] [stdout]   --> src/matrix/src/lib.rs:23:6
[INFO] [stdout]    |
[INFO] [stdout] 23 | enum MatrixIter<'a> {
[INFO] [stdout]    |      ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `of` and `transpose` are never used
[INFO] [stdout]   --> src/matrix/src/lib.rs:57:8
[INFO] [stdout]    |
[INFO] [stdout] 56 | impl<'a> MatrixView<'a> {
[INFO] [stdout]    | ----------------------- associated items in this implementation
[INFO] [stdout] 57 |     fn of(m : &'a Matrix) -> MatrixView<'a>{
[INFO] [stdout]    |        ^^
[INFO] [stdout] ...
[INFO] [stdout] 63 |     fn transpose(&mut self) {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `iter` is never used
[INFO] [stdout]    --> src/matrix/src/lib.rs:133:8
[INFO] [stdout]     |
[INFO] [stdout]  67 | impl Matrix {
[INFO] [stdout]     | ----------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 133 |     fn iter(&self) -> MatrixIter<'_> {
[INFO] [stdout]     |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `transform_index` is never used
[INFO] [stdout]    --> src/matrix/src/lib.rs:573:4
[INFO] [stdout]     |
[INFO] [stdout] 573 | fn transform_index(i : usize, num_rows : usize, num_cols : usize) -> usize {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `matrix` (lib) due to 1 previous error; 5 warnings emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "b33eb866064e4f874106eb64c622b153f3be7924f495d33889c860e268a531d2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b33eb866064e4f874106eb64c622b153f3be7924f495d33889c860e268a531d2", kill_on_drop: false }`
[INFO] [stdout] b33eb866064e4f874106eb64c622b153f3be7924f495d33889c860e268a531d2