[INFO] cloning repository https://github.com/jakob-rzeppa/data-structures-and-algorithms-rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/jakob-rzeppa/data-structures-and-algorithms-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjakob-rzeppa%2Fdata-structures-and-algorithms-rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjakob-rzeppa%2Fdata-structures-and-algorithms-rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 7b649e7ce8921328b6b871f9be4167ef1321ee2c
[INFO] testing jakob-rzeppa/data-structures-and-algorithms-rust against try#dec9417b8611e34e787a3e4c37686b5131f9e5c5 for pr-154210
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjakob-rzeppa%2Fdata-structures-and-algorithms-rust" "/workspace/builds/worker-0-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/jakob-rzeppa/data-structures-and-algorithms-rust
[INFO] finished tweaking git repo https://github.com/jakob-rzeppa/data-structures-and-algorithms-rust
[INFO] tweaked toml for git repo https://github.com/jakob-rzeppa/data-structures-and-algorithms-rust written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/jakob-rzeppa/data-structures-and-algorithms-rust on toolchain dec9417b8611e34e787a3e4c37686b5131f9e5c5
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/jakob-rzeppa/data-structures-and-algorithms-rust 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" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2767fe6e55b25880058c3682bb8decf7c3df091cf4a7c29781771d4803f3a85e
[INFO] running `Command { std: "docker" "start" "-a" "2767fe6e55b25880058c3682bb8decf7c3df091cf4a7c29781771d4803f3a85e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2767fe6e55b25880058c3682bb8decf7c3df091cf4a7c29781771d4803f3a85e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2767fe6e55b25880058c3682bb8decf7c3df091cf4a7c29781771d4803f3a85e", kill_on_drop: false }`
[INFO] [stdout] 2767fe6e55b25880058c3682bb8decf7c3df091cf4a7c29781771d4803f3a85e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d9bbab7554f434c62be700cb56a67aa34fa2101ba120509c80ffcb9148f24f58
[INFO] running `Command { std: "docker" "start" "-a" "d9bbab7554f434c62be700cb56a67aa34fa2101ba120509c80ffcb9148f24f58", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.183
[INFO] [stderr]    Compiling zerocopy v0.8.40
[INFO] [stderr]    Compiling getrandom v0.2.17
[INFO] [stderr]    Compiling rand_core v0.6.4
[INFO] [stderr]    Compiling ppv-lite86 v0.2.21
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling rand v0.8.5
[INFO] [stderr]    Compiling data-structures-and-algorithms-rust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: function `binary_search` is never used
[INFO] [stdout]  --> src/binary_search.rs:3:4
[INFO] [stdout]   |
[INFO] [stdout] 3 | fn binary_search(arr: &[i32], target: i32) -> Option<usize> {
[INFO] [stdout]   |    ^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `insertion_sort` is never used
[INFO] [stdout]  --> src/sorting/insertion_sort.rs:1:4
[INFO] [stdout]   |
[INFO] [stdout] 1 | fn insertion_sort(arr: &mut [i32]) {
[INFO] [stdout]   |    ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `selection_sort` is never used
[INFO] [stdout]  --> src/sorting/selection_sort.rs:1:4
[INFO] [stdout]   |
[INFO] [stdout] 1 | fn selection_sort(arr: &mut [i32]) {
[INFO] [stdout]   |    ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `bubble_sort` is never used
[INFO] [stdout]  --> src/sorting/bubble_sort.rs:1:4
[INFO] [stdout]   |
[INFO] [stdout] 1 | fn bubble_sort(arr: &mut [i32]) {
[INFO] [stdout]   |    ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `merge_sort` is never used
[INFO] [stdout]  --> src/sorting/merge_sort.rs:1:4
[INFO] [stdout]   |
[INFO] [stdout] 1 | fn merge_sort(arr: &[i32]) -> Vec<i32> {
[INFO] [stdout]   |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `merge` is never used
[INFO] [stdout]   --> src/sorting/merge_sort.rs:13:4
[INFO] [stdout]    |
[INFO] [stdout] 13 | fn merge(arr1: &[i32], arr2: &[i32]) -> Vec<i32> {
[INFO] [stdout]    |    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `quick_sort` is never used
[INFO] [stdout]  --> src/sorting/quick_sort.rs:2:4
[INFO] [stdout]   |
[INFO] [stdout] 2 | fn quick_sort(arr: &mut [i32]) {
[INFO] [stdout]   |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `qsort` is never used
[INFO] [stdout]   --> src/sorting/quick_sort.rs:10:4
[INFO] [stdout]    |
[INFO] [stdout] 10 | fn qsort(arr: &mut [i32], low: usize, high: usize) {
[INFO] [stdout]    |    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Node` is never constructed
[INFO] [stdout]  --> src/data_structures/stack.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | struct Node<T> {
[INFO] [stdout]   |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]  --> src/data_structures/stack.rs:9:8
[INFO] [stdout]   |
[INFO] [stdout] 8 | impl<T> Node<T> {
[INFO] [stdout]   | --------------- associated function in this implementation
[INFO] [stdout] 9 |     fn new(data: T) -> Self {
[INFO] [stdout]   |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Stack` is never constructed
[INFO] [stdout]   --> src/data_structures/stack.rs:17:8
[INFO] [stdout]    |
[INFO] [stdout] 17 | struct Stack<T> {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `as_vec`, `push`, and `pop` are never used
[INFO] [stdout]   --> src/data_structures/stack.rs:22:8
[INFO] [stdout]    |
[INFO] [stdout] 21 | impl<T: Clone> Stack<T> {
[INFO] [stdout]    | ----------------------- associated items in this implementation
[INFO] [stdout] 22 |     fn new() -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 28 |     fn as_vec(&self) -> Vec<T> {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 40 |     fn push(&mut self, data: T) {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 46 |     fn pop(&mut self) -> Option<T> {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 8.13s
[INFO] running `Command { std: "docker" "inspect" "d9bbab7554f434c62be700cb56a67aa34fa2101ba120509c80ffcb9148f24f58", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d9bbab7554f434c62be700cb56a67aa34fa2101ba120509c80ffcb9148f24f58", kill_on_drop: false }`
[INFO] [stdout] d9bbab7554f434c62be700cb56a67aa34fa2101ba120509c80ffcb9148f24f58
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9b2d511cd732fc32b5c3d733cdeca0d0fc4932d6462aa67b18d39c1424d32487
[INFO] running `Command { std: "docker" "start" "-a" "9b2d511cd732fc32b5c3d733cdeca0d0fc4932d6462aa67b18d39c1424d32487", kill_on_drop: false }`
[INFO] [stderr]    Compiling data-structures-and-algorithms-rust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: function `binary_search` is never used
[INFO] [stdout]  --> src/binary_search.rs:3:4
[INFO] [stdout]   |
[INFO] [stdout] 3 | fn binary_search(arr: &[i32], target: i32) -> Option<usize> {
[INFO] [stdout]   |    ^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `insertion_sort` is never used
[INFO] [stdout]  --> src/sorting/insertion_sort.rs:1:4
[INFO] [stdout]   |
[INFO] [stdout] 1 | fn insertion_sort(arr: &mut [i32]) {
[INFO] [stdout]   |    ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `selection_sort` is never used
[INFO] [stdout]  --> src/sorting/selection_sort.rs:1:4
[INFO] [stdout]   |
[INFO] [stdout] 1 | fn selection_sort(arr: &mut [i32]) {
[INFO] [stdout]   |    ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `bubble_sort` is never used
[INFO] [stdout]  --> src/sorting/bubble_sort.rs:1:4
[INFO] [stdout]   |
[INFO] [stdout] 1 | fn bubble_sort(arr: &mut [i32]) {
[INFO] [stdout]   |    ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `merge_sort` is never used
[INFO] [stdout]  --> src/sorting/merge_sort.rs:1:4
[INFO] [stdout]   |
[INFO] [stdout] 1 | fn merge_sort(arr: &[i32]) -> Vec<i32> {
[INFO] [stdout]   |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `merge` is never used
[INFO] [stdout]   --> src/sorting/merge_sort.rs:13:4
[INFO] [stdout]    |
[INFO] [stdout] 13 | fn merge(arr1: &[i32], arr2: &[i32]) -> Vec<i32> {
[INFO] [stdout]    |    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `quick_sort` is never used
[INFO] [stdout]  --> src/sorting/quick_sort.rs:2:4
[INFO] [stdout]   |
[INFO] [stdout] 2 | fn quick_sort(arr: &mut [i32]) {
[INFO] [stdout]   |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `qsort` is never used
[INFO] [stdout]   --> src/sorting/quick_sort.rs:10:4
[INFO] [stdout]    |
[INFO] [stdout] 10 | fn qsort(arr: &mut [i32], low: usize, high: usize) {
[INFO] [stdout]    |    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Node` is never constructed
[INFO] [stdout]  --> src/data_structures/stack.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | struct Node<T> {
[INFO] [stdout]   |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]  --> src/data_structures/stack.rs:9:8
[INFO] [stdout]   |
[INFO] [stdout] 8 | impl<T> Node<T> {
[INFO] [stdout]   | --------------- associated function in this implementation
[INFO] [stdout] 9 |     fn new(data: T) -> Self {
[INFO] [stdout]   |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Stack` is never constructed
[INFO] [stdout]   --> src/data_structures/stack.rs:17:8
[INFO] [stdout]    |
[INFO] [stdout] 17 | struct Stack<T> {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `as_vec`, `push`, and `pop` are never used
[INFO] [stdout]   --> src/data_structures/stack.rs:22:8
[INFO] [stdout]    |
[INFO] [stdout] 21 | impl<T: Clone> Stack<T> {
[INFO] [stdout]    | ----------------------- associated items in this implementation
[INFO] [stdout] 22 |     fn new() -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 28 |     fn as_vec(&self) -> Vec<T> {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 40 |     fn push(&mut self, data: T) {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 46 |     fn pop(&mut self) -> Option<T> {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.92s
[INFO] running `Command { std: "docker" "inspect" "9b2d511cd732fc32b5c3d733cdeca0d0fc4932d6462aa67b18d39c1424d32487", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9b2d511cd732fc32b5c3d733cdeca0d0fc4932d6462aa67b18d39c1424d32487", kill_on_drop: false }`
[INFO] [stdout] 9b2d511cd732fc32b5c3d733cdeca0d0fc4932d6462aa67b18d39c1424d32487
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] ec2dff96898f71e64a6a8842752e9c98fbdac69375151a989c04867ee0f70980
[INFO] running `Command { std: "docker" "start" "-a" "ec2dff96898f71e64a6a8842752e9c98fbdac69375151a989c04867ee0f70980", kill_on_drop: false }`
[INFO] [stderr] warning: function `binary_search` is never used
[INFO] [stderr]  --> src/binary_search.rs:3:4
[INFO] [stderr]   |
[INFO] [stderr] 3 | fn binary_search(arr: &[i32], target: i32) -> Option<usize> {
[INFO] [stderr]   |    ^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function `insertion_sort` is never used
[INFO] [stderr]  --> src/sorting/insertion_sort.rs:1:4
[INFO] [stderr]   |
[INFO] [stderr] 1 | fn insertion_sort(arr: &mut [i32]) {
[INFO] [stderr]   |    ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `selection_sort` is never used
[INFO] [stderr]  --> src/sorting/selection_sort.rs:1:4
[INFO] [stderr]   |
[INFO] [stderr] 1 | fn selection_sort(arr: &mut [i32]) {
[INFO] [stderr]   |    ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `bubble_sort` is never used
[INFO] [stderr]  --> src/sorting/bubble_sort.rs:1:4
[INFO] [stderr]   |
[INFO] [stderr] 1 | fn bubble_sort(arr: &mut [i32]) {
[INFO] [stderr]   |    ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `merge_sort` is never used
[INFO] [stderr]  --> src/sorting/merge_sort.rs:1:4
[INFO] [stderr]   |
[INFO] [stderr] 1 | fn merge_sort(arr: &[i32]) -> Vec<i32> {
[INFO] [stderr]   |    ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `merge` is never used
[INFO] [stderr]   --> src/sorting/merge_sort.rs:13:4
[INFO] [stderr]    |
[INFO] [stderr] 13 | fn merge(arr1: &[i32], arr2: &[i32]) -> Vec<i32> {
[INFO] [stderr]    |    ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `quick_sort` is never used
[INFO] [stderr]  --> src/sorting/quick_sort.rs:2:4
[INFO] [stderr]   |
[INFO] [stderr] 2 | fn quick_sort(arr: &mut [i32]) {
[INFO] [stderr]   |    ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `qsort` is never used
[INFO] [stderr]   --> src/sorting/quick_sort.rs:10:4
[INFO] [stderr]    |
[INFO] [stderr] 10 | fn qsort(arr: &mut [i32], low: usize, high: usize) {
[INFO] [stderr]    |    ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct `Node` is never constructed
[INFO] [stderr]  --> src/data_structures/stack.rs:3:8
[INFO] [stderr]   |
[INFO] [stderr] 3 | struct Node<T> {
[INFO] [stderr]   |        ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function `new` is never used
[INFO] [stderr]  --> src/data_structures/stack.rs:9:8
[INFO] [stderr]   |
[INFO] [stderr] 8 | impl<T> Node<T> {
[INFO] [stderr]   | --------------- associated function in this implementation
[INFO] [stderr] 9 |     fn new(data: T) -> Self {
[INFO] [stderr]   |        ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct `Stack` is never constructed
[INFO] [stderr]   --> src/data_structures/stack.rs:17:8
[INFO] [stderr]    |
[INFO] [stderr] 17 | struct Stack<T> {
[INFO] [stderr]    |        ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated items `new`, `as_vec`, `push`, and `pop` are never used
[INFO] [stderr]   --> src/data_structures/stack.rs:22:8
[INFO] [stderr]    |
[INFO] [stderr] 21 | impl<T: Clone> Stack<T> {
[INFO] [stderr]    | ----------------------- associated items in this implementation
[INFO] [stderr] 22 |     fn new() -> Self {
[INFO] [stderr]    |        ^^^
[INFO] [stderr] ...
[INFO] [stderr] 28 |     fn as_vec(&self) -> Vec<T> {
[INFO] [stderr]    |        ^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 40 |     fn push(&mut self, data: T) {
[INFO] [stderr]    |        ^^^^
[INFO] [stderr] ...
[INFO] [stderr] 46 |     fn pop(&mut self) -> Option<T> {
[INFO] [stderr]    |        ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `data-structures-and-algorithms-rust` (lib) generated 12 warnings
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.07s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/data_structures_and_algorithms_rust-f5892596f06d6aeb)
[INFO] [stdout] 
[INFO] [stdout] running 28 tests
[INFO] [stdout] test binary_search::tests::test ... ok
[INFO] [stdout] test data_structures::stack::tests::basic ... ok
[INFO] [stdout] test sorting::bubble_sort::tests::already_sorted ... ok
[INFO] [stdout] test binary_search::tests::test_large_dataset ... ok
[INFO] [stdout] test sorting::bubble_sort::tests::empty ... ok
[INFO] [stdout] test sorting::insertion_sort::tests::already_sorted ... ok
[INFO] [stdout] test sorting::bubble_sort::tests::one_element ... ok
[INFO] [stdout] test sorting::insertion_sort::tests::basic ... ok
[INFO] [stdout] test sorting::bubble_sort::tests::basic ... ok
[INFO] [stdout] test sorting::insertion_sort::tests::empty ... ok
[INFO] [stdout] test sorting::merge_sort::tests::basic ... ok
[INFO] [stdout] test sorting::merge_sort::tests::empty ... ok
[INFO] [stdout] test sorting::merge_sort::tests::one_element ... ok
[INFO] [stdout] test sorting::quick_sort::tests::basic ... ok
[INFO] [stdout] test sorting::quick_sort::tests::already_sorted ... ok
[INFO] [stdout] test sorting::merge_sort::tests::big_dataset ... ok
[INFO] [stdout] test sorting::quick_sort::tests::big_dataset ... ok
[INFO] [stdout] test sorting::quick_sort::tests::empty ... ok
[INFO] [stdout] test sorting::quick_sort::tests::one_element ... ok
[INFO] [stdout] test sorting::selection_sort::tests::already_sorted ... ok
[INFO] [stdout] test sorting::selection_sort::tests::basic ... ok
[INFO] [stdout] test sorting::selection_sort::tests::empty ... ok
[INFO] [stdout] test sorting::selection_sort::tests::one_element ... ok
[INFO] [stdout] test sorting::insertion_sort::tests::one_element ... ok
[INFO] [stdout] test sorting::merge_sort::tests::already_sorted ... ok
[INFO] [stdout] test sorting::selection_sort::tests::big_dataset ... ok
[INFO] [stdout] test sorting::insertion_sort::tests::big_dataset ... ok
[INFO] [stderr]    Doc-tests data_structures_and_algorithms_rust
[INFO] [stdout] test sorting::bubble_sort::tests::big_dataset ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 28 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.09s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "ec2dff96898f71e64a6a8842752e9c98fbdac69375151a989c04867ee0f70980", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ec2dff96898f71e64a6a8842752e9c98fbdac69375151a989c04867ee0f70980", kill_on_drop: false }`
[INFO] [stdout] ec2dff96898f71e64a6a8842752e9c98fbdac69375151a989c04867ee0f70980