[INFO] cloning repository https://github.com/nanbratan/algorithms-and-data-structures
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/nanbratan/algorithms-and-data-structures" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnanbratan%2Falgorithms-and-data-structures", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnanbratan%2Falgorithms-and-data-structures'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] da7bd510e3211bd47ecd930470972a8d9edc75a0
[INFO] checking nanbratan/algorithms-and-data-structures against master#1f12b9b0fdbe735968ac002792a720f0ba4faca6 for crater-rollup-uwu
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnanbratan%2Falgorithms-and-data-structures" "/workspace/builds/worker-3-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/nanbratan/algorithms-and-data-structures on toolchain 1f12b9b0fdbe735968ac002792a720f0ba4faca6
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/nanbratan/algorithms-and-data-structures
[INFO] finished tweaking git repo https://github.com/nanbratan/algorithms-and-data-structures
[INFO] tweaked toml for git repo https://github.com/nanbratan/algorithms-and-data-structures written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/nanbratan/algorithms-and-data-structures 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" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 28464b536e713489b795ca090dbca71f3ae24465c5f91d7d874837680e21179f
[INFO] running `Command { std: "docker" "start" "-a" "28464b536e713489b795ca090dbca71f3ae24465c5f91d7d874837680e21179f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "28464b536e713489b795ca090dbca71f3ae24465c5f91d7d874837680e21179f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "28464b536e713489b795ca090dbca71f3ae24465c5f91d7d874837680e21179f", kill_on_drop: false }`
[INFO] [stdout] 28464b536e713489b795ca090dbca71f3ae24465c5f91d7d874837680e21179f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 45f1c300637da95fbf71ece2115485a1adba78e770b949e01c3fe15e90f465a1
[INFO] running `Command { std: "docker" "start" "-a" "45f1c300637da95fbf71ece2115485a1adba78e770b949e01c3fe15e90f465a1", kill_on_drop: false }`
[INFO] [stderr]     Checking algorithms-and-data-structures v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait `Neighbor` is never used
[INFO] [stdout]  --> src/algorithms/k_nearest_neighbor.rs:4:11
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub trait Neighbor {
[INFO] [stdout]   |           ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `NeighborWithDistance` is never constructed
[INFO] [stdout]  --> src/algorithms/k_nearest_neighbor.rs:8:8
[INFO] [stdout]   |
[INFO] [stdout] 8 | struct NeighborWithDistance<'a> {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `k_nearest_neighbor` is never used
[INFO] [stdout]   --> src/algorithms/k_nearest_neighbor.rs:40:8
[INFO] [stdout]    |
[INFO] [stdout] 40 | pub fn k_nearest_neighbor<'a, T: Neighbor>(
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `name` is never read
[INFO] [stdout]   --> src/algorithms/k_nearest_neighbor.rs:89:9
[INFO] [stdout]    |
[INFO] [stdout] 88 |     struct Viewer<'a> {
[INFO] [stdout]    |            ------ field in this struct
[INFO] [stdout] 89 |         name: &'a str,
[INFO] [stdout]    |         ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.20s
[INFO] running `Command { std: "docker" "inspect" "45f1c300637da95fbf71ece2115485a1adba78e770b949e01c3fe15e90f465a1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "45f1c300637da95fbf71ece2115485a1adba78e770b949e01c3fe15e90f465a1", kill_on_drop: false }`
[INFO] [stdout] 45f1c300637da95fbf71ece2115485a1adba78e770b949e01c3fe15e90f465a1