[INFO] cloning repository https://github.com/tarekseba/rust-algos
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/tarekseba/rust-algos" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftarekseba%2Frust-algos", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftarekseba%2Frust-algos'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 33d03253f19404575eacdf34f621f0c67dfb48fb
[INFO] checking tarekseba/rust-algos against master#1f12b9b0fdbe735968ac002792a720f0ba4faca6 for crater-rollup-uwu
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftarekseba%2Frust-algos" "/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/tarekseba/rust-algos 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/tarekseba/rust-algos
[INFO] finished tweaking git repo https://github.com/tarekseba/rust-algos
[INFO] tweaked toml for git repo https://github.com/tarekseba/rust-algos written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/tarekseba/rust-algos 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] 371b7ede3418aab4f8957a547f37445f6f8f6fc394c00162ab7e9175173b0091
[INFO] running `Command { std: "docker" "start" "-a" "371b7ede3418aab4f8957a547f37445f6f8f6fc394c00162ab7e9175173b0091", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "371b7ede3418aab4f8957a547f37445f6f8f6fc394c00162ab7e9175173b0091", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "371b7ede3418aab4f8957a547f37445f6f8f6fc394c00162ab7e9175173b0091", kill_on_drop: false }`
[INFO] [stdout] 371b7ede3418aab4f8957a547f37445f6f8f6fc394c00162ab7e9175173b0091
[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] 6f23d09019755b7257abb09d49562502553e87ef27fec92d353a2b57dd43abe2
[INFO] running `Command { std: "docker" "start" "-a" "6f23d09019755b7257abb09d49562502553e87ef27fec92d353a2b57dd43abe2", kill_on_drop: false }`
[INFO] [stderr]    Compiling cc v1.0.79
[INFO] [stderr]    Compiling libc v0.2.144
[INFO] [stderr]    Compiling sys-info v0.9.1
[INFO] [stderr]     Checking rust-algos v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `Duration`
[INFO] [stdout]  --> src/quick_sort/para/mod.rs:7:12
[INFO] [stdout]   |
[INFO] [stdout] 7 |     time::{Duration, Instant},
[INFO] [stdout]   |            ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `if` condition
[INFO] [stdout]    --> src/quick_sort/para/mod.rs:252:8
[INFO] [stdout]     |
[INFO] [stdout] 252 |     if (slice.len() > 1) {
[INFO] [stdout]     |        ^               ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 252 -     if (slice.len() > 1) {
[INFO] [stdout] 252 +     if slice.len() > 1 {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `quick_sort::mono::quick_sort as qs_mono`
[INFO] [stdout]  --> src/main.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | use quick_sort::mono::quick_sort as qs_mono;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `quick_sort::para::quick_sort as qs_para`
[INFO] [stdout]  --> src/main.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 | use quick_sort::para::quick_sort as qs_para;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Sorting`
[INFO] [stdout]   --> src/main.rs:13:32
[INFO] [stdout]    |
[INFO] [stdout] 13 | use crate::utils::{read_input, Sorting};
[INFO] [stdout]    |                                ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Duration`
[INFO] [stdout]  --> src/quick_sort/para/mod.rs:7:12
[INFO] [stdout]   |
[INFO] [stdout] 7 |     time::{Duration, Instant},
[INFO] [stdout]   |            ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `if` condition
[INFO] [stdout]    --> src/quick_sort/para/mod.rs:252:8
[INFO] [stdout]     |
[INFO] [stdout] 252 |     if (slice.len() > 1) {
[INFO] [stdout]     |        ^               ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 252 -     if (slice.len() > 1) {
[INFO] [stdout] 252 +     if slice.len() > 1 {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `quick_sort::mono::quick_sort as qs_mono`
[INFO] [stdout]  --> src/main.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | use quick_sort::mono::quick_sort as qs_mono;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `quick_sort::para::quick_sort as qs_para`
[INFO] [stdout]  --> src/main.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 | use quick_sort::para::quick_sort as qs_para;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Sorting`
[INFO] [stdout]   --> src/main.rs:13:32
[INFO] [stdout]    |
[INFO] [stdout] 13 | use crate::utils::{read_input, Sorting};
[INFO] [stdout]    |                                ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `index`
[INFO] [stdout]    --> src/quick_sort/para/mod.rs:207:5
[INFO] [stdout]     |
[INFO] [stdout] 207 |     index: usize,
[INFO] [stdout]     |     ^^^^^ help: if this is intentional, prefix it with an underscore: `_index`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `now`
[INFO] [stdout]   --> src/main.rs:19:9
[INFO] [stdout]    |
[INFO] [stdout] 19 |     let now = Instant::now();
[INFO] [stdout]    |         ^^^ help: if this is intentional, prefix it with an underscore: `_now`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `bubble_sort` is never used
[INFO] [stdout]  --> src/bubble_sort/mod.rs:5:8
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub fn bubble_sort<T>(slice: &mut [T], order: Sorting) -> &mut [T]
[INFO] [stdout]   |        ^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `quick_sort` is never used
[INFO] [stdout]   --> src/quick_sort/mono/mod.rs:50:8
[INFO] [stdout]    |
[INFO] [stdout] 50 | pub fn quick_sort<T: Ord + std::fmt::Debug>(slice: &mut [T], order: &Sorting) -> () {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `IsTrue` is never used
[INFO] [stdout]   --> src/quick_sort/para/mod.rs:14:7
[INFO] [stdout]    |
[INFO] [stdout] 14 | trait IsTrue {
[INFO] [stdout]    |       ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `spawn_thread` is never used
[INFO] [stdout]   --> src/quick_sort/para/mod.rs:23:4
[INFO] [stdout]    |
[INFO] [stdout] 23 | fn spawn_thread<T>(
[INFO] [stdout]    |    ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `quick_sort_aux` is never used
[INFO] [stdout]   --> src/quick_sort/para/mod.rs:41:8
[INFO] [stdout]    |
[INFO] [stdout] 41 | pub fn quick_sort_aux<T>(
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `quick_sort` is never used
[INFO] [stdout]   --> src/quick_sort/para/mod.rs:69:8
[INFO] [stdout]    |
[INFO] [stdout] 69 | pub fn quick_sort<T>(array: &mut [T], sorting: &Sorting)
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `qs_para` is never used
[INFO] [stdout]   --> src/quick_sort/para/mod.rs:83:4
[INFO] [stdout]    |
[INFO] [stdout] 83 | fn qs_para<T>(ptr: usize, len: usize, sorting: Sorting)
[INFO] [stdout]    |    ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `qs_para_aux` is never used
[INFO] [stdout]   --> src/quick_sort/para/mod.rs:92:4
[INFO] [stdout]    |
[INFO] [stdout] 92 | fn qs_para_aux<T>(slice: &mut [T], sorting: &Sorting)
[INFO] [stdout]    |    ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `TestUtils` is never used
[INFO] [stdout]  --> src/test_utils/mod.rs:3:11
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub trait TestUtils<T> {
[INFO] [stdout]   |           ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `DataProvider` is never constructed
[INFO] [stdout]  --> src/test_utils/mod.rs:8:12
[INFO] [stdout]   |
[INFO] [stdout] 8 | pub struct DataProvider {}
[INFO] [stdout]   |            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `test_executor` is never used
[INFO] [stdout]   --> src/test_utils/mod.rs:29:8
[INFO] [stdout]    |
[INFO] [stdout] 29 | pub fn test_executor<F, T>(f: F, data: &mut [T], order: Sorting) -> ()
[INFO] [stdout]    |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `index`
[INFO] [stdout]    --> src/quick_sort/para/mod.rs:207:5
[INFO] [stdout]     |
[INFO] [stdout] 207 |     index: usize,
[INFO] [stdout]     |     ^^^^^ help: if this is intentional, prefix it with an underscore: `_index`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `now`
[INFO] [stdout]   --> src/main.rs:19:9
[INFO] [stdout]    |
[INFO] [stdout] 19 |     let now = Instant::now();
[INFO] [stdout]    |         ^^^ help: if this is intentional, prefix it with an underscore: `_now`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/quick_sort/para/mod.rs:236:13
[INFO] [stdout]     |
[INFO] [stdout] 236 |             state_tx.send(None);
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 236 |             let _ = state_tx.send(None);
[INFO] [stdout]     |             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `IsTrue` is never used
[INFO] [stdout]   --> src/quick_sort/para/mod.rs:14:7
[INFO] [stdout]    |
[INFO] [stdout] 14 | trait IsTrue {
[INFO] [stdout]    |       ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `spawn_thread` is never used
[INFO] [stdout]   --> src/quick_sort/para/mod.rs:23:4
[INFO] [stdout]    |
[INFO] [stdout] 23 | fn spawn_thread<T>(
[INFO] [stdout]    |    ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `quick_sort_aux` is never used
[INFO] [stdout]   --> src/quick_sort/para/mod.rs:41:8
[INFO] [stdout]    |
[INFO] [stdout] 41 | pub fn quick_sort_aux<T>(
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `quick_sort` is never used
[INFO] [stdout]   --> src/quick_sort/para/mod.rs:69:8
[INFO] [stdout]    |
[INFO] [stdout] 69 | pub fn quick_sort<T>(array: &mut [T], sorting: &Sorting)
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `qs_para` is never used
[INFO] [stdout]   --> src/quick_sort/para/mod.rs:83:4
[INFO] [stdout]    |
[INFO] [stdout] 83 | fn qs_para<T>(ptr: usize, len: usize, sorting: Sorting)
[INFO] [stdout]    |    ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `qs_para_aux` is never used
[INFO] [stdout]   --> src/quick_sort/para/mod.rs:92:4
[INFO] [stdout]    |
[INFO] [stdout] 92 | fn qs_para_aux<T>(slice: &mut [T], sorting: &Sorting)
[INFO] [stdout]    |    ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 19 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/quick_sort/para/mod.rs:236:13
[INFO] [stdout]     |
[INFO] [stdout] 236 |             state_tx.send(None);
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 236 |             let _ = state_tx.send(None);
[INFO] [stdout]     |             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 14 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.78s
[INFO] running `Command { std: "docker" "inspect" "6f23d09019755b7257abb09d49562502553e87ef27fec92d353a2b57dd43abe2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6f23d09019755b7257abb09d49562502553e87ef27fec92d353a2b57dd43abe2", kill_on_drop: false }`
[INFO] [stdout] 6f23d09019755b7257abb09d49562502553e87ef27fec92d353a2b57dd43abe2