[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] bf999c12a6939cd31c61f0ddb410eda31e1d2f09
[INFO] checking christophebrucker/rust_exercises against master#8007b506ac5da629f223b755f5a5391edd5f6d01 for pr-88041
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fchristophebrucker%2Frust_exercises" "/workspace/builds/worker-0/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/christophebrucker/rust_exercises on toolchain 8007b506ac5da629f223b755f5a5391edd5f6d01
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8007b506ac5da629f223b755f5a5391edd5f6d01" "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-0/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" "+8007b506ac5da629f223b755f5a5391edd5f6d01" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "+8007b506ac5da629f223b755f5a5391edd5f6d01" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] fbb04092bacf94387e098c9c5fb6a2386ad320f0b9e9b6d7a4d1bb781e972104
[INFO] running `Command { std: "docker" "start" "-a" "fbb04092bacf94387e098c9c5fb6a2386ad320f0b9e9b6d7a4d1bb781e972104", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "fbb04092bacf94387e098c9c5fb6a2386ad320f0b9e9b6d7a4d1bb781e972104", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fbb04092bacf94387e098c9c5fb6a2386ad320f0b9e9b6d7a4d1bb781e972104", kill_on_drop: false }`
[INFO] [stdout] fbb04092bacf94387e098c9c5fb6a2386ad320f0b9e9b6d7a4d1bb781e972104
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "+8007b506ac5da629f223b755f5a5391edd5f6d01" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8f1f5b945abc0071f7b2e7a9c4b274b9731bb0f37c443d8ab23b153a60316c56
[INFO] running `Command { std: "docker" "start" "-a" "8f1f5b945abc0071f7b2e7a9c4b274b9731bb0f37c443d8ab23b153a60316c56", 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:44:7
[INFO] [stdout]    |
[INFO] [stdout] 44 |   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:4:8
[INFO] [stdout]   |
[INFO] [stdout] 4 | 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:9:8
[INFO] [stdout]   |
[INFO] [stdout] 9 | pub fn max(n1: i32, n2: i32) {
[INFO] [stdout]   |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]   --> src/functions.rs:44:7
[INFO] [stdout]    |
[INFO] [stdout] 44 |   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: `sort`
[INFO] [stdout]   --> src/functions.rs:14:8
[INFO] [stdout]    |
[INFO] [stdout] 14 | 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:21:8
[INFO] [stdout]    |
[INFO] [stdout] 21 | 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:26:8
[INFO] [stdout]    |
[INFO] [stdout] 26 | pub fn sum(array: [i32; 10]) {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `reverse`
[INFO] [stdout]  --> src/functions.rs:4:8
[INFO] [stdout]   |
[INFO] [stdout] 4 | 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:9:8
[INFO] [stdout]   |
[INFO] [stdout] 9 | 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:14:8
[INFO] [stdout]    |
[INFO] [stdout] 14 | 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:21:8
[INFO] [stdout]    |
[INFO] [stdout] 21 | 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:26:8
[INFO] [stdout]    |
[INFO] [stdout] 26 | pub fn sum(array: [i32; 10]) {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.16s
[INFO] running `Command { std: "docker" "inspect" "8f1f5b945abc0071f7b2e7a9c4b274b9731bb0f37c443d8ab23b153a60316c56", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8f1f5b945abc0071f7b2e7a9c4b274b9731bb0f37c443d8ab23b153a60316c56", kill_on_drop: false }`
[INFO] [stdout] 8f1f5b945abc0071f7b2e7a9c4b274b9731bb0f37c443d8ab23b153a60316c56