[INFO] cloning repository https://github.com/xsoer/algorithm
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/xsoer/algorithm" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fxsoer%2Falgorithm", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fxsoer%2Falgorithm'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 5deaa897056955a4b1f6765224e921ccd564c471
[INFO] checking xsoer/algorithm against master#5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f for pr-87248
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fxsoer%2Falgorithm" "/workspace/builds/worker-3/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/xsoer/algorithm on toolchain 5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/xsoer/algorithm
[INFO] finished tweaking git repo https://github.com/xsoer/algorithm
[INFO] tweaked toml for git repo https://github.com/xsoer/algorithm written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] crate git repo https://github.com/xsoer/algorithm already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 77f530b0210fc2050e965058933f116976a46c782760007a35dcfaba5d1e7140
[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" "77f530b0210fc2050e965058933f116976a46c782760007a35dcfaba5d1e7140", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "77f530b0210fc2050e965058933f116976a46c782760007a35dcfaba5d1e7140", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "77f530b0210fc2050e965058933f116976a46c782760007a35dcfaba5d1e7140", kill_on_drop: false }`
[INFO] [stdout] 77f530b0210fc2050e965058933f116976a46c782760007a35dcfaba5d1e7140
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 18f56961d1956bf483dfbfa3ce94332f870bb72bd3796e1a875294d3d6bb683e
[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" "18f56961d1956bf483dfbfa3ce94332f870bb72bd3796e1a875294d3d6bb683e", kill_on_drop: false }`
[INFO] [stderr]     Checking algorithm v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused imports: `Div`, `Sub`
[INFO] [stdout]  --> src/search.rs:1:16
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::ops::{Div, Sub};
[INFO] [stdout]   |                ^^^  ^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `super::*`
[INFO] [stdout]   --> src/math.rs:29:9
[INFO] [stdout]    |
[INFO] [stdout] 29 |     use super::*;
[INFO] [stdout]    |         ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Div`, `Sub`
[INFO] [stdout]  --> src/search.rs:1:16
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::ops::{Div, Sub};
[INFO] [stdout]   |                ^^^  ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `super::*`
[INFO] [stdout]   --> src/search.rs:58:9
[INFO] [stdout]    |
[INFO] [stdout] 58 |     use super::*;
[INFO] [stdout]    |         ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `super::*`
[INFO] [stdout]    --> src/sort.rs:122:9
[INFO] [stdout]     |
[INFO] [stdout] 122 |     use super::*;
[INFO] [stdout]     |         ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `arr`
[INFO] [stdout]    --> src/sort.rs:114:25
[INFO] [stdout]     |
[INFO] [stdout] 114 | pub fn counting_sort<T>(arr: &mut Vec<T>)
[INFO] [stdout]     |                         ^^^ help: if this is intentional, prefix it with an underscore: `_arr`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `gcd`
[INFO] [stdout]  --> src/math.rs:2:8
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub fn gcd(a: usize, b: usize) -> usize {
[INFO] [stdout]   |        ^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `lcm`
[INFO] [stdout]   --> src/math.rs:11:8
[INFO] [stdout]    |
[INFO] [stdout] 11 | pub fn lcm(a: usize, b: usize) -> usize {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `fib`
[INFO] [stdout]   --> src/math.rs:17:8
[INFO] [stdout]    |
[INFO] [stdout] 17 | pub fn fib(n: usize) -> usize {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `sequence_search`
[INFO] [stdout]  --> src/search.rs:4:8
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub fn sequence_search<T>(arr: &Vec<T>, value: T) -> Option<usize>
[INFO] [stdout]   |        ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `binary_search`
[INFO] [stdout]   --> src/search.rs:17:8
[INFO] [stdout]    |
[INFO] [stdout] 17 | pub fn binary_search<T>(arr: &Vec<T>, value: T) -> Option<usize>
[INFO] [stdout]    |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `insertion_search`
[INFO] [stdout]   --> src/search.rs:40:8
[INFO] [stdout]    |
[INFO] [stdout] 40 | pub fn insertion_search(arr: &Vec<usize>, value: usize) -> Option<usize> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `bubble_sort`
[INFO] [stdout]  --> src/sort.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub fn bubble_sort<T>(arr: &mut Vec<T>)
[INFO] [stdout]   |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `insertion_sort`
[INFO] [stdout]   --> src/sort.rs:27:8
[INFO] [stdout]    |
[INFO] [stdout] 27 | pub fn insertion_sort<T>(arr: &mut Vec<T>)
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `selection_sort`
[INFO] [stdout]   --> src/sort.rs:52:8
[INFO] [stdout]    |
[INFO] [stdout] 52 | pub fn selection_sort<T>(arr: &mut Vec<T>)
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `quick_sort`
[INFO] [stdout]   --> src/sort.rs:75:8
[INFO] [stdout]    |
[INFO] [stdout] 75 | pub fn quick_sort<T>(arr: &mut Vec<T>)
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `quick`
[INFO] [stdout]   --> src/sort.rs:86:4
[INFO] [stdout]    |
[INFO] [stdout] 86 | fn quick<T>(arr: &mut Vec<T>, left: usize, right: usize)
[INFO] [stdout]    |    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `counting_sort`
[INFO] [stdout]    --> src/sort.rs:114:8
[INFO] [stdout]     |
[INFO] [stdout] 114 | pub fn counting_sort<T>(arr: &mut Vec<T>)
[INFO] [stdout]     |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias is never used: `DataType`
[INFO] [stdout]    --> src/sort.rs:123:5
[INFO] [stdout]     |
[INFO] [stdout] 123 | /     type DataType<'a> = (
[INFO] [stdout] 124 | |         Vec<usize>,
[INFO] [stdout] 125 | |         Vec<usize>,
[INFO] [stdout] 126 | |         Vec<i8>,
[INFO] [stdout] ...   |
[INFO] [stdout] 132 | |         Vec<&'a str>,
[INFO] [stdout] 133 | |     );
[INFO] [stdout]     | |______^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `data`
[INFO] [stdout]    --> src/sort.rs:135:8
[INFO] [stdout]     |
[INFO] [stdout] 135 |     fn data() -> DataType<'static> {
[INFO] [stdout]     |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 19 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `arr`
[INFO] [stdout]    --> src/sort.rs:114:25
[INFO] [stdout]     |
[INFO] [stdout] 114 | pub fn counting_sort<T>(arr: &mut Vec<T>)
[INFO] [stdout]     |                         ^^^ help: if this is intentional, prefix it with an underscore: `_arr`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `counting_sort`
[INFO] [stdout]    --> src/sort.rs:114:8
[INFO] [stdout]     |
[INFO] [stdout] 114 | pub fn counting_sort<T>(arr: &mut Vec<T>)
[INFO] [stdout]     |        ^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.29s
[INFO] running `Command { std: "docker" "inspect" "18f56961d1956bf483dfbfa3ce94332f870bb72bd3796e1a875294d3d6bb683e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "18f56961d1956bf483dfbfa3ce94332f870bb72bd3796e1a875294d3d6bb683e", kill_on_drop: false }`
[INFO] [stdout] 18f56961d1956bf483dfbfa3ce94332f870bb72bd3796e1a875294d3d6bb683e