[INFO] cloning repository https://github.com/helixDevelopment/codewars-rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/helixDevelopment/codewars-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FhelixDevelopment%2Fcodewars-rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FhelixDevelopment%2Fcodewars-rust'...
[INFO] [stderr] /workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FhelixDevelopment%2Fcodewars-rust/objects: No space left on device
[WARN] Retrying crate fetch in 3 seconds (attempt 1)
[INFO] cloning repository https://github.com/helixDevelopment/codewars-rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/helixDevelopment/codewars-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FhelixDevelopment%2Fcodewars-rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FhelixDevelopment%2Fcodewars-rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 97745552e956833e051fe94b15798ebe90f10366
[INFO] checking helixDevelopment/codewars-rust against master#75530e9f72a1990ed2305e16fd51d02f47048f12 for pr-138676
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FhelixDevelopment%2Fcodewars-rust" "/workspace/builds/worker-3-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/helixDevelopment/codewars-rust on toolchain 75530e9f72a1990ed2305e16fd51d02f47048f12
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+75530e9f72a1990ed2305e16fd51d02f47048f12" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/helixDevelopment/codewars-rust
[INFO] finished tweaking git repo https://github.com/helixDevelopment/codewars-rust
[INFO] tweaked toml for git repo https://github.com/helixDevelopment/codewars-rust written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/helixDevelopment/codewars-rust 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" "+75530e9f72a1990ed2305e16fd51d02f47048f12" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/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@sha256:1680c8fbd8dfb46fcd6d22e546df16ab0e007457dc29fcd9e987cdd5077fd1af" "/opt/rustwide/cargo-home/bin/cargo" "+75530e9f72a1990ed2305e16fd51d02f47048f12" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c2cc93e2c8cf46f437577f9cdb791ccc65dbc802847a99571f3fcd0c91e423d6
[INFO] running `Command { std: "docker" "start" "-a" "c2cc93e2c8cf46f437577f9cdb791ccc65dbc802847a99571f3fcd0c91e423d6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c2cc93e2c8cf46f437577f9cdb791ccc65dbc802847a99571f3fcd0c91e423d6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c2cc93e2c8cf46f437577f9cdb791ccc65dbc802847a99571f3fcd0c91e423d6", kill_on_drop: false }`
[INFO] [stdout] c2cc93e2c8cf46f437577f9cdb791ccc65dbc802847a99571f3fcd0c91e423d6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/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@sha256:1680c8fbd8dfb46fcd6d22e546df16ab0e007457dc29fcd9e987cdd5077fd1af" "/opt/rustwide/cargo-home/bin/cargo" "+75530e9f72a1990ed2305e16fd51d02f47048f12" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4c0275f35136870416727b6b4ed5ca09885b30ca88ee76fbb3c4785040e52f99
[INFO] running `Command { std: "docker" "start" "-a" "4c0275f35136870416727b6b4ed5ca09885b30ca88ee76fbb3c4785040e52f99", kill_on_drop: false }`
[INFO] [stderr]     Checking codewars-rust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: function `count_duplicates` is never used
[INFO] [stdout]  --> src/count_duplicates.rs:9:4
[INFO] [stdout]   |
[INFO] [stdout] 9 | fn count_duplicates(text: &str) -> i32 {
[INFO] [stdout]   |    ^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `count_duplicates` is never used
[INFO] [stdout]  --> src/count_duplicates.rs:9:4
[INFO] [stdout]   |
[INFO] [stdout] 9 | fn count_duplicates(text: &str) -> i32 {
[INFO] [stdout]   |    ^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main` is never used
[INFO] [stdout]   --> src/count_duplicates.rs:34:4
[INFO] [stdout]    |
[INFO] [stdout] 34 | fn main() {
[INFO] [stdout]    |    ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `is_valid_walk` is never used
[INFO] [stdout]   --> src/take_a_10_minutes_walk.rs:12:4
[INFO] [stdout]    |
[INFO] [stdout] 12 | fn is_valid_walk(walk: &[char]) -> bool {
[INFO] [stdout]    |    ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main` is never used
[INFO] [stdout]   --> src/count_duplicates.rs:34:4
[INFO] [stdout]    |
[INFO] [stdout] 34 | fn main() {
[INFO] [stdout]    |    ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main` is never used
[INFO] [stdout]   --> src/take_a_10_minutes_walk.rs:31:4
[INFO] [stdout]    |
[INFO] [stdout] 31 | fn main() {
[INFO] [stdout]    |    ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `is_valid_walk` is never used
[INFO] [stdout]   --> src/take_a_10_minutes_walk.rs:12:4
[INFO] [stdout]    |
[INFO] [stdout] 12 | fn is_valid_walk(walk: &[char]) -> bool {
[INFO] [stdout]    |    ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `josephus_survivor` is never used
[INFO] [stdout]   --> src/josephus_survivor.rs:19:4
[INFO] [stdout]    |
[INFO] [stdout] 19 | fn josephus_survivor(n: i32, k: i32) -> i32 {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main` is never used
[INFO] [stdout]   --> src/take_a_10_minutes_walk.rs:31:4
[INFO] [stdout]    |
[INFO] [stdout] 31 | fn main() {
[INFO] [stdout]    |    ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main` is never used
[INFO] [stdout]   --> src/josephus_survivor.rs:37:4
[INFO] [stdout]    |
[INFO] [stdout] 37 | fn main() {
[INFO] [stdout]    |    ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `josephus_survivor` is never used
[INFO] [stdout]   --> src/josephus_survivor.rs:19:4
[INFO] [stdout]    |
[INFO] [stdout] 19 | fn josephus_survivor(n: i32, k: i32) -> i32 {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `row_sum_odd_numbers` is never used
[INFO] [stdout]   --> src/row_sum_odd_numbers.rs:17:4
[INFO] [stdout]    |
[INFO] [stdout] 17 | fn row_sum_odd_numbers(n: i64) -> i64 {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main` is never used
[INFO] [stdout]   --> src/josephus_survivor.rs:37:4
[INFO] [stdout]    |
[INFO] [stdout] 37 | fn main() {
[INFO] [stdout]    |    ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main` is never used
[INFO] [stdout]   --> src/row_sum_odd_numbers.rs:37:4
[INFO] [stdout]    |
[INFO] [stdout] 37 | fn main() {
[INFO] [stdout]    |    ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `row_sum_odd_numbers` is never used
[INFO] [stdout]   --> src/row_sum_odd_numbers.rs:17:4
[INFO] [stdout]    |
[INFO] [stdout] 17 | fn row_sum_odd_numbers(n: i64) -> i64 {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `odd_or_even` is never used
[INFO] [stdout]  --> src/odd_or_even.rs:9:4
[INFO] [stdout]   |
[INFO] [stdout] 9 | fn odd_or_even(numbers: Vec<i32>) -> String {
[INFO] [stdout]   |    ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main` is never used
[INFO] [stdout]   --> src/row_sum_odd_numbers.rs:37:4
[INFO] [stdout]    |
[INFO] [stdout] 37 | fn main() {
[INFO] [stdout]    |    ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main` is never used
[INFO] [stdout]   --> src/odd_or_even.rs:19:4
[INFO] [stdout]    |
[INFO] [stdout] 19 | fn main() {
[INFO] [stdout]    |    ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `move_zeros` is never used
[INFO] [stdout]  --> src/move_zeroes.rs:5:4
[INFO] [stdout]   |
[INFO] [stdout] 5 | fn move_zeros(arr: &[u8]) -> Vec<u8> {
[INFO] [stdout]   |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `odd_or_even` is never used
[INFO] [stdout]  --> src/odd_or_even.rs:9:4
[INFO] [stdout]   |
[INFO] [stdout] 9 | fn odd_or_even(numbers: Vec<i32>) -> String {
[INFO] [stdout]   |    ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main` is never used
[INFO] [stdout]   --> src/odd_or_even.rs:19:4
[INFO] [stdout]    |
[INFO] [stdout] 19 | fn main() {
[INFO] [stdout]    |    ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `dotest` is never used
[INFO] [stdout]   --> src/move_zeroes.rs:14:4
[INFO] [stdout]    |
[INFO] [stdout] 14 | fn dotest(a: &[u8], expected: &[u8]) {
[INFO] [stdout]    |    ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `move_zeros` is never used
[INFO] [stdout]  --> src/move_zeroes.rs:5:4
[INFO] [stdout]   |
[INFO] [stdout] 5 | fn move_zeros(arr: &[u8]) -> Vec<u8> {
[INFO] [stdout]   |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main` is never used
[INFO] [stdout]   --> src/move_zeroes.rs:23:4
[INFO] [stdout]    |
[INFO] [stdout] 23 | fn main() {
[INFO] [stdout]    |    ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `dotest` is never used
[INFO] [stdout]   --> src/move_zeroes.rs:14:4
[INFO] [stdout]    |
[INFO] [stdout] 14 | fn dotest(a: &[u8], expected: &[u8]) {
[INFO] [stdout]    |    ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main` is never used
[INFO] [stdout]   --> src/move_zeroes.rs:23:4
[INFO] [stdout]    |
[INFO] [stdout] 23 | fn main() {
[INFO] [stdout]    |    ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.09s
[INFO] running `Command { std: "docker" "inspect" "4c0275f35136870416727b6b4ed5ca09885b30ca88ee76fbb3c4785040e52f99", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4c0275f35136870416727b6b4ed5ca09885b30ca88ee76fbb3c4785040e52f99", kill_on_drop: false }`
[INFO] [stdout] 4c0275f35136870416727b6b4ed5ca09885b30ca88ee76fbb3c4785040e52f99