[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] testing christophebrucker/rust_exercises against beta-2022-04-10 for beta-1.61-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fchristophebrucker%2Frust_exercises" "/workspace/builds/worker-112/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-112/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/christophebrucker/rust_exercises on toolchain beta-2022-04-10
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "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-112/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" "+beta-2022-04-10" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-112/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-112/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 613990eefcea1954da5f93a2d6e58569e2db63386cea55cac5fd546f4e7a7b04
[INFO] running `Command { std: "docker" "start" "-a" "613990eefcea1954da5f93a2d6e58569e2db63386cea55cac5fd546f4e7a7b04", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "613990eefcea1954da5f93a2d6e58569e2db63386cea55cac5fd546f4e7a7b04", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "613990eefcea1954da5f93a2d6e58569e2db63386cea55cac5fd546f4e7a7b04", kill_on_drop: false }`
[INFO] [stdout] 613990eefcea1954da5f93a2d6e58569e2db63386cea55cac5fd546f4e7a7b04
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-112/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-112/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=warn" "-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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a0bc4549db3021f32f5941c692f2d07cc08d5ac9d08781169f290b1fa6f656ea
[INFO] running `Command { std: "docker" "start" "-a" "a0bc4549db3021f32f5941c692f2d07cc08d5ac9d08781169f290b1fa6f656ea", kill_on_drop: false }`
[INFO] [stderr]    Compiling 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: 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: 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.08s
[INFO] running `Command { std: "docker" "inspect" "a0bc4549db3021f32f5941c692f2d07cc08d5ac9d08781169f290b1fa6f656ea", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a0bc4549db3021f32f5941c692f2d07cc08d5ac9d08781169f290b1fa6f656ea", kill_on_drop: false }`
[INFO] [stdout] a0bc4549db3021f32f5941c692f2d07cc08d5ac9d08781169f290b1fa6f656ea
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-112/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-112/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=warn" "-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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] fe7131d12681a17252dd84be759bd1c96b4aa460201f1a1a196bf3de8d8152ce
[INFO] running `Command { std: "docker" "start" "-a" "fe7131d12681a17252dd84be759bd1c96b4aa460201f1a1a196bf3de8d8152ce", kill_on_drop: false }`
[INFO] [stderr]    Compiling 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: 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: 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.51s
[INFO] [stderr]   Executable unittests src/main.rs (/opt/rustwide/target/debug/deps/rust_exercises-e88b9ea8e58bfe9a)
[INFO] running `Command { std: "docker" "inspect" "fe7131d12681a17252dd84be759bd1c96b4aa460201f1a1a196bf3de8d8152ce", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fe7131d12681a17252dd84be759bd1c96b4aa460201f1a1a196bf3de8d8152ce", kill_on_drop: false }`
[INFO] [stdout] fe7131d12681a17252dd84be759bd1c96b4aa460201f1a1a196bf3de8d8152ce
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-112/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-112/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=warn" "-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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] f73c5332c0c32ed1a4d4f0b2af6cede2919f54fa4fb4ba93da5964bea32d47c7
[INFO] running `Command { std: "docker" "start" "-a" "f73c5332c0c32ed1a4d4f0b2af6cede2919f54fa4fb4ba93da5964bea32d47c7", kill_on_drop: false }`
[INFO] [stderr] warning: unused variable: `x`
[INFO] [stderr]   --> src/functions.rs:48:9
[INFO] [stderr]    |
[INFO] [stderr] 48 |     for x in 0..number_of_chunks {
[INFO] [stderr]    |         ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `reverse`
[INFO] [stderr]  --> src/functions.rs:8:8
[INFO] [stderr]   |
[INFO] [stderr] 8 | pub fn reverse(string: &str) {
[INFO] [stderr]   |        ^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `max`
[INFO] [stderr]   --> src/functions.rs:13:8
[INFO] [stderr]    |
[INFO] [stderr] 13 | pub fn max(n1: i32, n2: i32) {
[INFO] [stderr]    |        ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `sort`
[INFO] [stderr]   --> src/functions.rs:18:8
[INFO] [stderr]    |
[INFO] [stderr] 18 | pub fn sort(array: [i32; 4]) {
[INFO] [stderr]    |        ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `remove`
[INFO] [stderr]   --> src/functions.rs:25:8
[INFO] [stderr]    |
[INFO] [stderr] 25 | pub fn remove(string: &str, character: &str) {
[INFO] [stderr]    |        ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `sum`
[INFO] [stderr]   --> src/functions.rs:30:8
[INFO] [stderr]    |
[INFO] [stderr] 30 | pub fn sum(array: [i32; 10]) {
[INFO] [stderr]    |        ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `chunk`
[INFO] [stderr]   --> src/functions.rs:39:8
[INFO] [stderr]    |
[INFO] [stderr] 39 | pub fn chunk(vector: Vec<usize>, number: usize) {
[INFO] [stderr]    |        ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `rust_exercises` (bin "rust_exercises" test) generated 7 warnings
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/rust_exercises-e88b9ea8e58bfe9a)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "f73c5332c0c32ed1a4d4f0b2af6cede2919f54fa4fb4ba93da5964bea32d47c7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f73c5332c0c32ed1a4d4f0b2af6cede2919f54fa4fb4ba93da5964bea32d47c7", kill_on_drop: false }`
[INFO] [stdout] f73c5332c0c32ed1a4d4f0b2af6cede2919f54fa4fb4ba93da5964bea32d47c7