[INFO] cloning repository https://github.com/christophebrucker/rust_exercises
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/christophebrucker/rust_exercises" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fchristophebrucker%2Frust_exercises", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fchristophebrucker%2Frust_exercises'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 1f605f31f597f0e45d2264da3e56193990e99728
[INFO] checking christophebrucker/rust_exercises against try#cac44d9528e3bbbdaa1537d187bd489ccc5de18c for pr-91141
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fchristophebrucker%2Frust_exercises" "/workspace/builds/worker-74/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-74/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/christophebrucker/rust_exercises on toolchain cac44d9528e3bbbdaa1537d187bd489ccc5de18c
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/christophebrucker/rust_exercises
[INFO] finished tweaking git repo https://github.com/christophebrucker/rust_exercises
[INFO] tweaked toml for git repo https://github.com/christophebrucker/rust_exercises written to /workspace/builds/worker-74/source/Cargo.toml
[INFO] crate git repo https://github.com/christophebrucker/rust_exercises already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-74/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-74/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 56e2370c585cb6c634874703b98673747f9f86f14bfd916b469dde980d6360c5
[INFO] running `Command { std: "docker" "start" "-a" "56e2370c585cb6c634874703b98673747f9f86f14bfd916b469dde980d6360c5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "56e2370c585cb6c634874703b98673747f9f86f14bfd916b469dde980d6360c5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "56e2370c585cb6c634874703b98673747f9f86f14bfd916b469dde980d6360c5", kill_on_drop: false }`
[INFO] [stdout] 56e2370c585cb6c634874703b98673747f9f86f14bfd916b469dde980d6360c5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-74/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-74/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ce85027bb6a9b9d6d55a6d03e50c8ad3c3927b591a0830ed0a4b79511e8b1bfe
[INFO] running `Command { std: "docker" "start" "-a" "ce85027bb6a9b9d6d55a6d03e50c8ad3c3927b591a0830ed0a4b79511e8b1bfe", kill_on_drop: false }`
[INFO] [stderr]     Checking rust_exercises v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]   --> src/functions.rs:48:9
[INFO] [stdout]    |
[INFO] [stdout] 48 |     for x in 0..number_of_chunks {
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]   --> src/functions.rs:48:9
[INFO] [stdout]    |
[INFO] [stdout] 48 |     for x in 0..number_of_chunks {
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `reverse`
[INFO] [stdout]  --> src/functions.rs:8:8
[INFO] [stdout]   |
[INFO] [stdout] 8 | pub fn reverse(string: &str) {
[INFO] [stdout]   |        ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `max`
[INFO] [stdout]   --> src/functions.rs:13:8
[INFO] [stdout]    |
[INFO] [stdout] 13 | pub fn max(n1: i32, n2: i32) {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `sort`
[INFO] [stdout]   --> src/functions.rs:18:8
[INFO] [stdout]    |
[INFO] [stdout] 18 | pub fn sort(array: [i32; 4]) {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `remove`
[INFO] [stdout]   --> src/functions.rs:25:8
[INFO] [stdout]    |
[INFO] [stdout] 25 | pub fn remove(string: &str, character: &str) {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `sum`
[INFO] [stdout]   --> src/functions.rs:30:8
[INFO] [stdout]    |
[INFO] [stdout] 30 | pub fn sum(array: [i32; 10]) {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `chunk`
[INFO] [stdout]   --> src/functions.rs:39:8
[INFO] [stdout]    |
[INFO] [stdout] 39 | pub fn chunk(vector: Vec<usize>, number: usize) {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `reverse`
[INFO] [stdout]  --> src/functions.rs:8:8
[INFO] [stdout]   |
[INFO] [stdout] 8 | pub fn reverse(string: &str) {
[INFO] [stdout]   |        ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `max`
[INFO] [stdout]   --> src/functions.rs:13:8
[INFO] [stdout]    |
[INFO] [stdout] 13 | pub fn max(n1: i32, n2: i32) {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `sort`
[INFO] [stdout]   --> src/functions.rs:18:8
[INFO] [stdout]    |
[INFO] [stdout] 18 | pub fn sort(array: [i32; 4]) {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `remove`
[INFO] [stdout]   --> src/functions.rs:25:8
[INFO] [stdout]    |
[INFO] [stdout] 25 | pub fn remove(string: &str, character: &str) {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `sum`
[INFO] [stdout]   --> src/functions.rs:30:8
[INFO] [stdout]    |
[INFO] [stdout] 30 | pub fn sum(array: [i32; 10]) {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `chunk`
[INFO] [stdout]   --> src/functions.rs:39:8
[INFO] [stdout]    |
[INFO] [stdout] 39 | pub fn chunk(vector: Vec<usize>, number: usize) {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.09s
[INFO] running `Command { std: "docker" "inspect" "ce85027bb6a9b9d6d55a6d03e50c8ad3c3927b591a0830ed0a4b79511e8b1bfe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ce85027bb6a9b9d6d55a6d03e50c8ad3c3927b591a0830ed0a4b79511e8b1bfe", kill_on_drop: false }`
[INFO] [stdout] ce85027bb6a9b9d6d55a6d03e50c8ad3c3927b591a0830ed0a4b79511e8b1bfe