[INFO] cloning repository https://github.com/cndofx/genetic-knapsack
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/cndofx/genetic-knapsack" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcndofx%2Fgenetic-knapsack", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcndofx%2Fgenetic-knapsack'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 56e30f5622f9776cf76562e32fc5b1a07b488965
[INFO] checking cndofx/genetic-knapsack against master#d14d202262d13df896b0c624b0cec6e4bfde631a for pr-143028
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcndofx%2Fgenetic-knapsack" "/workspace/builds/worker-5-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/cndofx/genetic-knapsack
[INFO] finished tweaking git repo https://github.com/cndofx/genetic-knapsack
[INFO] tweaked toml for git repo https://github.com/cndofx/genetic-knapsack written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/cndofx/genetic-knapsack on toolchain d14d202262d13df896b0c624b0cec6e4bfde631a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+d14d202262d13df896b0c624b0cec6e4bfde631a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/cndofx/genetic-knapsack 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" "+d14d202262d13df896b0c624b0cec6e4bfde631a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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" "+d14d202262d13df896b0c624b0cec6e4bfde631a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2ee0ffbfda3877542af3b9dd08c9a89c30bb39d8dfa867651ac821d3f16e34bb
[INFO] running `Command { std: "docker" "start" "-a" "2ee0ffbfda3877542af3b9dd08c9a89c30bb39d8dfa867651ac821d3f16e34bb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2ee0ffbfda3877542af3b9dd08c9a89c30bb39d8dfa867651ac821d3f16e34bb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2ee0ffbfda3877542af3b9dd08c9a89c30bb39d8dfa867651ac821d3f16e34bb", kill_on_drop: false }`
[INFO] [stdout] 2ee0ffbfda3877542af3b9dd08c9a89c30bb39d8dfa867651ac821d3f16e34bb
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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" "+d14d202262d13df896b0c624b0cec6e4bfde631a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d2e09f3165d3f3f7688ee17e4559eac3c88c6b55051bb9a57cc188401ccd7082
[INFO] running `Command { std: "docker" "start" "-a" "d2e09f3165d3f3f7688ee17e4559eac3c88c6b55051bb9a57cc188401ccd7082", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.153
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]     Checking ppv-lite86 v0.2.17
[INFO] [stderr]     Checking getrandom v0.2.12
[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]     Checking genetic-knapsack v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: method `solutions` is never used
[INFO] [stdout]   --> src/population.rs:43:12
[INFO] [stdout]    |
[INFO] [stdout] 14 | impl<'p> Population<'p> {
[INFO] [stdout]    | ----------------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 43 |     pub fn solutions(&self) -> &[Vec<bool>] {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `solutions` is never used
[INFO] [stdout]   --> src/population.rs:43:12
[INFO] [stdout]    |
[INFO] [stdout] 14 | impl<'p> Population<'p> {
[INFO] [stdout]    | ----------------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 43 |     pub fn solutions(&self) -> &[Vec<bool>] {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.25s
[INFO] running `Command { std: "docker" "inspect" "d2e09f3165d3f3f7688ee17e4559eac3c88c6b55051bb9a57cc188401ccd7082", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d2e09f3165d3f3f7688ee17e4559eac3c88c6b55051bb9a57cc188401ccd7082", kill_on_drop: false }`
[INFO] [stdout] d2e09f3165d3f3f7688ee17e4559eac3c88c6b55051bb9a57cc188401ccd7082