[INFO] cloning repository https://github.com/tonykolomeytsev/book-algorithms
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/tonykolomeytsev/book-algorithms" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftonykolomeytsev%2Fbook-algorithms", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftonykolomeytsev%2Fbook-algorithms'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] f4f545bc05217c46eb9442c48aaf717ef9b8e31d
[INFO] checking tonykolomeytsev/book-algorithms against try#b2c2190fa7bf856bb0ed5e8806266e3a2135c6f8 for pr-78363
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftonykolomeytsev%2Fbook-algorithms" "/workspace/builds/worker-5/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/tonykolomeytsev/book-algorithms on toolchain b2c2190fa7bf856bb0ed5e8806266e3a2135c6f8
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b2c2190fa7bf856bb0ed5e8806266e3a2135c6f8" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/tonykolomeytsev/book-algorithms
[INFO] finished tweaking git repo https://github.com/tonykolomeytsev/book-algorithms
[INFO] tweaked toml for git repo https://github.com/tonykolomeytsev/book-algorithms written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] crate git repo https://github.com/tonykolomeytsev/book-algorithms already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b2c2190fa7bf856bb0ed5e8806266e3a2135c6f8" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+b2c2190fa7bf856bb0ed5e8806266e3a2135c6f8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 976df11d20a075b943da90de064a15f7af10baa8e72dddb7af549b390bb91dc4
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "976df11d20a075b943da90de064a15f7af10baa8e72dddb7af549b390bb91dc4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "976df11d20a075b943da90de064a15f7af10baa8e72dddb7af549b390bb91dc4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "976df11d20a075b943da90de064a15f7af10baa8e72dddb7af549b390bb91dc4", kill_on_drop: false }`
[INFO] [stdout] 976df11d20a075b943da90de064a15f7af10baa8e72dddb7af549b390bb91dc4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+b2c2190fa7bf856bb0ed5e8806266e3a2135c6f8" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d07b9cf19ee6e3726b213d48246ba3c9289b1fdbd283988b048674b82a186b1c
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "d07b9cf19ee6e3726b213d48246ba3c9289b1fdbd283988b048674b82a186b1c", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.79
[INFO] [stderr]     Checking getrandom v0.1.15
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]     Checking algorithms v1.0.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: function is never used: `insertion_sort`
[INFO] [stdout]  --> src/chapter_2.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub fn insertion_sort(arr: &mut Vec<i32>) {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `insertion_sort_descending`
[INFO] [stdout]   --> src/chapter_2.rs:16:8
[INFO] [stdout]    |
[INFO] [stdout] 16 | pub fn insertion_sort_descending(arr: &mut Vec<i32>) {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `linear_search`
[INFO] [stdout]   --> src/chapter_2.rs:29:8
[INFO] [stdout]    |
[INFO] [stdout] 29 | pub fn linear_search(v: i32, arr: &[i32]) -> Option<usize> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `summarize_binary`
[INFO] [stdout]   --> src/chapter_2.rs:39:8
[INFO] [stdout]    |
[INFO] [stdout] 39 | pub fn summarize_binary(a: &Vec<u8>, b: &Vec<u8>, c: &mut Vec<u8>) {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `selection_sort`
[INFO] [stdout]   --> src/chapter_2.rs:49:8
[INFO] [stdout]    |
[INFO] [stdout] 49 | pub fn selection_sort(arr: &mut Vec<i32>) {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 7.24s
[INFO] running `Command { std: "docker" "inspect" "d07b9cf19ee6e3726b213d48246ba3c9289b1fdbd283988b048674b82a186b1c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d07b9cf19ee6e3726b213d48246ba3c9289b1fdbd283988b048674b82a186b1c", kill_on_drop: false }`
[INFO] [stdout] d07b9cf19ee6e3726b213d48246ba3c9289b1fdbd283988b048674b82a186b1c