[INFO] cloning repository https://github.com/dobrakmato/linear-algebra-rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/dobrakmato/linear-algebra-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdobrakmato%2Flinear-algebra-rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdobrakmato%2Flinear-algebra-rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 1c681f0f23d03f01b686ed74b34352a2cfe87656
[INFO] checking dobrakmato/linear-algebra-rust against master#90442458ac46b1d5eed752c316da25450f67285b for pr-81477
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdobrakmato%2Flinear-algebra-rust" "/workspace/builds/worker-8/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-8/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/dobrakmato/linear-algebra-rust on toolchain 90442458ac46b1d5eed752c316da25450f67285b
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+90442458ac46b1d5eed752c316da25450f67285b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/dobrakmato/linear-algebra-rust
[INFO] finished tweaking git repo https://github.com/dobrakmato/linear-algebra-rust
[INFO] tweaked toml for git repo https://github.com/dobrakmato/linear-algebra-rust written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] crate git repo https://github.com/dobrakmato/linear-algebra-rust already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+90442458ac46b1d5eed752c316da25450f67285b" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+90442458ac46b1d5eed752c316da25450f67285b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 1644f8b74b31b7a2c0070d29fcedcbb0669f8897f24413214524c2badba2752b
[INFO] running `Command { std: "docker" "start" "-a" "1644f8b74b31b7a2c0070d29fcedcbb0669f8897f24413214524c2badba2752b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1644f8b74b31b7a2c0070d29fcedcbb0669f8897f24413214524c2badba2752b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1644f8b74b31b7a2c0070d29fcedcbb0669f8897f24413214524c2badba2752b", kill_on_drop: false }`
[INFO] [stdout] 1644f8b74b31b7a2c0070d29fcedcbb0669f8897f24413214524c2badba2752b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+90442458ac46b1d5eed752c316da25450f67285b" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2840965bca8f7017638a30b36c8e9aef36a29a0bbadc8495adf2878b2cd1dbfa
[INFO] running `Command { std: "docker" "start" "-a" "2840965bca8f7017638a30b36c8e9aef36a29a0bbadc8495adf2878b2cd1dbfa", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Checking eaz v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `pivot`
[INFO] [stdout]   --> src/gauss.rs:58:13
[INFO] [stdout]    |
[INFO] [stdout] 58 |         let pivot = {
[INFO] [stdout]    |             ^^^^^ help: if this is intentional, prefix it with an underscore: `_pivot`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `pivot`
[INFO] [stdout]   --> src/gauss.rs:58:13
[INFO] [stdout]    |
[INFO] [stdout] 58 |         let pivot = {
[INFO] [stdout]    |             ^^^^^ help: if this is intentional, prefix it with an underscore: `_pivot`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `mul_row`
[INFO] [stdout]   --> src/gauss.rs:35:12
[INFO] [stdout]    |
[INFO] [stdout] 35 |     pub fn mul_row(&mut self, row: usize, f: T) {
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `swap_rows`
[INFO] [stdout]   --> src/gauss.rs:41:12
[INFO] [stdout]    |
[INFO] [stdout] 41 |     pub fn swap_rows(&mut self, row1: usize, row2: usize) {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `mul_row`
[INFO] [stdout]   --> src/gauss.rs:35:12
[INFO] [stdout]    |
[INFO] [stdout] 35 |     pub fn mul_row(&mut self, row: usize, f: T) {
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `swap_rows`
[INFO] [stdout]   --> src/gauss.rs:41:12
[INFO] [stdout]    |
[INFO] [stdout] 41 |     pub fn swap_rows(&mut self, row1: usize, row2: usize) {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.38s
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "2840965bca8f7017638a30b36c8e9aef36a29a0bbadc8495adf2878b2cd1dbfa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2840965bca8f7017638a30b36c8e9aef36a29a0bbadc8495adf2878b2cd1dbfa", kill_on_drop: false }`
[INFO] [stdout] 2840965bca8f7017638a30b36c8e9aef36a29a0bbadc8495adf2878b2cd1dbfa