[INFO] cloning repository https://github.com/eliavaux/machine-learning
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/eliavaux/machine-learning" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Feliavaux%2Fmachine-learning", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Feliavaux%2Fmachine-learning'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 1241338119bd47f6a1df82de8e3884ca03d123a1
[INFO] checking eliavaux/machine-learning against master#cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c for pr-143170
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Feliavaux%2Fmachine-learning" "/workspace/builds/worker-2-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/eliavaux/machine-learning
[INFO] finished tweaking git repo https://github.com/eliavaux/machine-learning
[INFO] tweaked toml for git repo https://github.com/eliavaux/machine-learning written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/eliavaux/machine-learning on toolchain cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/eliavaux/machine-learning 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" "+cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded ryu v1.0.15
[INFO] [stderr]   Downloaded itoa v1.0.9
[INFO] [stderr]   Downloaded serde_json v1.0.108
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 27c4f2bddaf1230a9acadbc3cff89337a3e0b99440bf34015f14d44a9e263d53
[INFO] running `Command { std: "docker" "start" "-a" "27c4f2bddaf1230a9acadbc3cff89337a3e0b99440bf34015f14d44a9e263d53", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "27c4f2bddaf1230a9acadbc3cff89337a3e0b99440bf34015f14d44a9e263d53", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "27c4f2bddaf1230a9acadbc3cff89337a3e0b99440bf34015f14d44a9e263d53", kill_on_drop: false }`
[INFO] [stdout] 27c4f2bddaf1230a9acadbc3cff89337a3e0b99440bf34015f14d44a9e263d53
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] db12272e2ea56c97e2e4dbc619a3da9137d97a81d6a9b2def7dfa41e721216f9
[INFO] running `Command { std: "docker" "start" "-a" "db12272e2ea56c97e2e4dbc619a3da9137d97a81d6a9b2def7dfa41e721216f9", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.69
[INFO] [stderr]    Compiling libc v0.2.150
[INFO] [stderr]     Checking simd-adler32 v0.3.7
[INFO] [stderr]    Compiling crc32fast v1.3.2
[INFO] [stderr]    Compiling serde v1.0.192
[INFO] [stderr]     Checking adler v1.0.2
[INFO] [stderr]    Compiling serde_json v1.0.108
[INFO] [stderr]     Checking ryu v1.0.15
[INFO] [stderr]     Checking itoa v1.0.9
[INFO] [stderr]     Checking miniz_oxide v0.7.1
[INFO] [stderr]     Checking fdeflate v0.3.1
[INFO] [stderr]     Checking flate2 v1.0.28
[INFO] [stderr]    Compiling quote v1.0.33
[INFO] [stderr]    Compiling syn v2.0.39
[INFO] [stderr]     Checking getrandom v0.2.11
[INFO] [stderr]     Checking png v0.17.10
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]    Compiling serde_derive v1.0.192
[INFO] [stderr]     Checking machine-learning v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/matrix.rs:11:12
[INFO] [stdout]    |
[INFO] [stdout] 10 | impl Matrix {
[INFO] [stdout]    | ----------- associated function in this implementation
[INFO] [stdout] 11 |     pub fn new(cols: usize, len: usize) -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `create_img` is never used
[INFO] [stdout]   --> src/parser.rs:38:8
[INFO] [stdout]    |
[INFO] [stdout] 38 | pub fn create_img(image: &[u8], path: &std::path::Path) -> std::io::Result<()> {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/matrix.rs:11:12
[INFO] [stdout]    |
[INFO] [stdout] 10 | impl Matrix {
[INFO] [stdout]    | ----------- associated function in this implementation
[INFO] [stdout] 11 |     pub fn new(cols: usize, len: usize) -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `create_img` is never used
[INFO] [stdout]   --> src/parser.rs:38:8
[INFO] [stdout]    |
[INFO] [stdout] 38 | pub fn create_img(image: &[u8], path: &std::path::Path) -> std::io::Result<()> {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 7.05s
[INFO] running `Command { std: "docker" "inspect" "db12272e2ea56c97e2e4dbc619a3da9137d97a81d6a9b2def7dfa41e721216f9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "db12272e2ea56c97e2e4dbc619a3da9137d97a81d6a9b2def7dfa41e721216f9", kill_on_drop: false }`
[INFO] [stdout] db12272e2ea56c97e2e4dbc619a3da9137d97a81d6a9b2def7dfa41e721216f9