[INFO] cloning repository https://github.com/roman-karpovich/codewars
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/roman-karpovich/codewars" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Froman-karpovich%2Fcodewars", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Froman-karpovich%2Fcodewars'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 2d6954c57a066ed1104b6a14b62acabf09a3a3f3
[INFO] checking roman-karpovich/codewars against try#a0cd57eba5d417638d3351ba13fc414ad1a24bec for pr-134688-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Froman-karpovich%2Fcodewars" "/workspace/builds/worker-2-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/roman-karpovich/codewars on toolchain a0cd57eba5d417638d3351ba13fc414ad1a24bec
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+a0cd57eba5d417638d3351ba13fc414ad1a24bec" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/roman-karpovich/codewars
[INFO] finished tweaking git repo https://github.com/roman-karpovich/codewars
[INFO] tweaked toml for git repo https://github.com/roman-karpovich/codewars written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/roman-karpovich/codewars 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" "+a0cd57eba5d417638d3351ba13fc414ad1a24bec" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+a0cd57eba5d417638d3351ba13fc414ad1a24bec" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ac30d175b8ca80ce756a20b343d495a8d49212310c91e05a4d360d85f86844fa
[INFO] running `Command { std: "docker" "start" "-a" "ac30d175b8ca80ce756a20b343d495a8d49212310c91e05a4d360d85f86844fa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ac30d175b8ca80ce756a20b343d495a8d49212310c91e05a4d360d85f86844fa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ac30d175b8ca80ce756a20b343d495a8d49212310c91e05a4d360d85f86844fa", kill_on_drop: false }`
[INFO] [stdout] ac30d175b8ca80ce756a20b343d495a8d49212310c91e05a4d360d85f86844fa
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+a0cd57eba5d417638d3351ba13fc414ad1a24bec" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] fdd1c6f1ace85fc223542edf1603809f359abf182add3d51bd5b01c4cc468049
[INFO] running `Command { std: "docker" "start" "-a" "fdd1c6f1ace85fc223542edf1603809f359abf182add3d51bd5b01c4cc468049", kill_on_drop: false }`
[INFO] [stderr]    Compiling memchr v2.5.0
[INFO] [stderr]     Checking regex-syntax v0.6.29
[INFO] [stderr]     Checking factorial_decomposition v0.1.0 (/opt/rustwide/workdir/kata_5/factorial_decomposition)
[INFO] [stderr]     Checking twice_linear v0.1.0 (/opt/rustwide/workdir/kata_4/twice_linear)
[INFO] [stdout] warning: unused import: `VecDeque`
[INFO] [stdout]  --> kata_4/twice_linear/src/main.rs:1:34
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::collections::{BTreeSet, VecDeque};
[INFO] [stdout]   |                                  ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::thread::current`
[INFO] [stdout]  --> kata_4/twice_linear/src/main.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::thread::current;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]   --> kata_4/twice_linear/src/main.rs:11:41
[INFO] [stdout]    |
[INFO] [stdout] 11 |     let mut queue = BTreeSet::from([1]);;
[INFO] [stdout]    |                                         ^ help: remove this semicolon
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(redundant_semicolons)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::thread::current`
[INFO] [stdout]  --> kata_5/factorial_decomposition/src/main.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::thread::current;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::thread::current`
[INFO] [stdout]  --> kata_5/factorial_decomposition/src/main.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::thread::current;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `VecDeque`
[INFO] [stdout]  --> kata_4/twice_linear/src/main.rs:1:34
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::collections::{BTreeSet, VecDeque};
[INFO] [stdout]   |                                  ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::thread::current`
[INFO] [stdout]  --> kata_4/twice_linear/src/main.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::thread::current;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]   --> kata_4/twice_linear/src/main.rs:11:41
[INFO] [stdout]    |
[INFO] [stdout] 11 |     let mut queue = BTreeSet::from([1]);;
[INFO] [stdout]    |                                         ^ help: remove this semicolon
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(redundant_semicolons)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `get_next_elements` is never used
[INFO] [stdout]  --> kata_4/twice_linear/src/main.rs:4:4
[INFO] [stdout]   |
[INFO] [stdout] 4 | fn get_next_elements(x: u32) -> (u32, u32) {
[INFO] [stdout]   |    ^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `dbl_linear` is never used
[INFO] [stdout]  --> kata_4/twice_linear/src/main.rs:8:4
[INFO] [stdout]   |
[INFO] [stdout] 8 | fn dbl_linear(n: u32) -> u32{
[INFO] [stdout]   |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `decompose_prime` is never used
[INFO] [stdout]  --> kata_5/factorial_decomposition/src/main.rs:9:4
[INFO] [stdout]   |
[INFO] [stdout] 9 | fn decompose_prime(n: i32) -> Vec<i32> {
[INFO] [stdout]   |    ^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `decomp` is never used
[INFO] [stdout]   --> kata_5/factorial_decomposition/src/main.rs:26:4
[INFO] [stdout]    |
[INFO] [stdout] 26 | fn decomp(n: i32) -> String {
[INFO] [stdout]    |    ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking aho-corasick v0.7.20
[INFO] [stderr]     Checking regex v1.7.3
[INFO] [stderr]     Checking isbn_validator v0.1.0 (/opt/rustwide/workdir/kata_5/isbn_validator)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]  --> kata_5/isbn_validator/src/main.rs:9:9
[INFO] [stdout]   |
[INFO] [stdout] 9 |     let mut chars: Vec<char> = isbn.chars().collect();
[INFO] [stdout]   |         ----^^^^^
[INFO] [stdout]   |         |
[INFO] [stdout]   |         help: remove this `mut`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]  --> kata_5/isbn_validator/src/main.rs:9:9
[INFO] [stdout]   |
[INFO] [stdout] 9 |     let mut chars: Vec<char> = isbn.chars().collect();
[INFO] [stdout]   |         ----^^^^^
[INFO] [stdout]   |         |
[INFO] [stdout]   |         help: remove this `mut`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `valid_isbn10` is never used
[INFO] [stdout]  --> kata_5/isbn_validator/src/main.rs:3:4
[INFO] [stdout]   |
[INFO] [stdout] 3 | fn valid_isbn10(isbn: &str) -> bool {
[INFO] [stdout]   |    ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 3.24s
[INFO] running `Command { std: "docker" "inspect" "fdd1c6f1ace85fc223542edf1603809f359abf182add3d51bd5b01c4cc468049", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fdd1c6f1ace85fc223542edf1603809f359abf182add3d51bd5b01c4cc468049", kill_on_drop: false }`
[INFO] [stdout] fdd1c6f1ace85fc223542edf1603809f359abf182add3d51bd5b01c4cc468049