[INFO] cloning repository https://github.com/hasanhaja/codewars-katas
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/hasanhaja/codewars-katas" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhasanhaja%2Fcodewars-katas", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhasanhaja%2Fcodewars-katas'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 348585997f7a4ec7975a03a376114bc7e64c6ed2
[INFO] checking hasanhaja/codewars-katas against master#5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f for pr-87248
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhasanhaja%2Fcodewars-katas" "/workspace/builds/worker-4/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/hasanhaja/codewars-katas 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/hasanhaja/codewars-katas
[INFO] finished tweaking git repo https://github.com/hasanhaja/codewars-katas
[INFO] tweaked toml for git repo https://github.com/hasanhaja/codewars-katas written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/hasanhaja/codewars-katas 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-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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] b656b0053e259028411da41ec4bf3c7c1d829f6ce56612a0e5096fee2c5300aa
[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" "b656b0053e259028411da41ec4bf3c7c1d829f6ce56612a0e5096fee2c5300aa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b656b0053e259028411da41ec4bf3c7c1d829f6ce56612a0e5096fee2c5300aa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b656b0053e259028411da41ec4bf3c7c1d829f6ce56612a0e5096fee2c5300aa", kill_on_drop: false }`
[INFO] [stdout] b656b0053e259028411da41ec4bf3c7c1d829f6ce56612a0e5096fee2c5300aa
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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] f98680196d2b5cac7d5f495e8a8b64545537aa72657a2f8adf7df52cb0bd0bc4
[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" "f98680196d2b5cac7d5f495e8a8b64545537aa72657a2f8adf7df52cb0bd0bc4", kill_on_drop: false }`
[INFO] [stderr]     Checking codewars-katas v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]   --> src/common_denominator/mod.rs:51:5
[INFO] [stdout]    |
[INFO] [stdout] 49 |     todo!("Sort the vector by the denominator");
[INFO] [stdout]    |     -------------------------------------------- any code following this expression is unreachable
[INFO] [stdout] 50 | 
[INFO] [stdout] 51 |     Vec::new()
[INFO] [stdout]    |     ^^^^^^^^^^ unreachable expression
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unreachable_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `list_of_fracs`
[INFO] [stdout]   --> src/common_denominator/mod.rs:47:9
[INFO] [stdout]    |
[INFO] [stdout] 47 |     let list_of_fracs: Vec<Fraction> = l.iter().map(|frac| Fraction::new(*frac)).collect();
[INFO] [stdout]    |         ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_list_of_fracs`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]   --> src/common_denominator/mod.rs:51:5
[INFO] [stdout]    |
[INFO] [stdout] 49 |     todo!("Sort the vector by the denominator");
[INFO] [stdout]    |     -------------------------------------------- any code following this expression is unreachable
[INFO] [stdout] 50 | 
[INFO] [stdout] 51 |     Vec::new()
[INFO] [stdout]    |     ^^^^^^^^^^ unreachable expression
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unreachable_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `list_of_fracs`
[INFO] [stdout]   --> src/common_denominator/mod.rs:47:9
[INFO] [stdout]    |
[INFO] [stdout] 47 |     let list_of_fracs: Vec<Fraction> = l.iter().map(|frac| Fraction::new(*frac)).collect();
[INFO] [stdout]    |         ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_list_of_fracs`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/common_denominator/mod.rs:31:12
[INFO] [stdout]    |
[INFO] [stdout] 31 |     pub fn new(frac: (i64, i64)) -> Fraction {
[INFO] [stdout]    |            ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `value`
[INFO] [stdout]   --> src/common_denominator/mod.rs:38:12
[INFO] [stdout]    |
[INFO] [stdout] 38 |     pub fn value(&self) -> f64 {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `convert_fracts`
[INFO] [stdout]   --> src/common_denominator/mod.rs:45:8
[INFO] [stdout]    |
[INFO] [stdout] 45 | pub fn convert_fracts(l: Vec<(i64, i64)>) -> Vec<(i64, i64)> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `quicksort`
[INFO] [stdout]   --> src/common_denominator/mod.rs:59:4
[INFO] [stdout]    |
[INFO] [stdout] 59 | fn quicksort(nums: &mut Vec<i64>, low: usize, high: usize) {
[INFO] [stdout]    |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `partition`
[INFO] [stdout]   --> src/common_denominator/mod.rs:68:4
[INFO] [stdout]    |
[INFO] [stdout] 68 | fn partition(nums: &mut Vec<i64>, low: usize, high: usize) -> usize {
[INFO] [stdout]    |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `swap`
[INFO] [stdout]   --> src/common_denominator/mod.rs:82:4
[INFO] [stdout]    |
[INFO] [stdout] 82 | fn swap(arr: &mut Vec<i64>, i: usize, j: usize) {
[INFO] [stdout]    |    ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 8 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.59s
[INFO] running `Command { std: "docker" "inspect" "f98680196d2b5cac7d5f495e8a8b64545537aa72657a2f8adf7df52cb0bd0bc4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f98680196d2b5cac7d5f495e8a8b64545537aa72657a2f8adf7df52cb0bd0bc4", kill_on_drop: false }`
[INFO] [stdout] f98680196d2b5cac7d5f495e8a8b64545537aa72657a2f8adf7df52cb0bd0bc4