[INFO] cloning repository https://github.com/artem-ibragimov/leetcode_rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/artem-ibragimov/leetcode_rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fartem-ibragimov%2Fleetcode_rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fartem-ibragimov%2Fleetcode_rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] c6c9d4d1c12ca27ebbd7aa1a964be67fcb92ac30
[INFO] testing artem-ibragimov/leetcode_rust against 1.55.0 for beta-1.56-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fartem-ibragimov%2Fleetcode_rust" "/workspace/builds/worker-27/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-27/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/artem-ibragimov/leetcode_rust on toolchain 1.55.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/artem-ibragimov/leetcode_rust
[INFO] finished tweaking git repo https://github.com/artem-ibragimov/leetcode_rust
[INFO] tweaked toml for git repo https://github.com/artem-ibragimov/leetcode_rust written to /workspace/builds/worker-27/source/Cargo.toml
[INFO] crate git repo https://github.com/artem-ibragimov/leetcode_rust already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "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-27/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-27/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ae9d554568db436d8861d931eb4c188d15a06a88a68aa8d06b1d08e549cb9143
[INFO] running `Command { std: "docker" "start" "-a" "ae9d554568db436d8861d931eb4c188d15a06a88a68aa8d06b1d08e549cb9143", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ae9d554568db436d8861d931eb4c188d15a06a88a68aa8d06b1d08e549cb9143", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ae9d554568db436d8861d931eb4c188d15a06a88a68aa8d06b1d08e549cb9143", kill_on_drop: false }`
[INFO] [stdout] ae9d554568db436d8861d931eb4c188d15a06a88a68aa8d06b1d08e549cb9143
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-27/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-27/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 06f9800062968666bb3db9f82c1aaae97b7358083e7ccf574cc062902ef79b85
[INFO] running `Command { std: "docker" "start" "-a" "06f9800062968666bb3db9f82c1aaae97b7358083e7ccf574cc062902ef79b85", kill_on_drop: false }`
[INFO] [stderr]    Compiling leetcode v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/linked_list/list.rs:10:11
[INFO] [stdout]    |
[INFO] [stdout] 10 |    pub fn new(val: i32) -> Self {
[INFO] [stdout]    |           ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `make_list`
[INFO] [stdout]   --> src/linked_list/list.rs:15:8
[INFO] [stdout]    |
[INFO] [stdout] 15 | pub fn make_list(indeces: Vec<i32>) -> Option<Box<ListNode>> {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.82s
[INFO] running `Command { std: "docker" "inspect" "06f9800062968666bb3db9f82c1aaae97b7358083e7ccf574cc062902ef79b85", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "06f9800062968666bb3db9f82c1aaae97b7358083e7ccf574cc062902ef79b85", kill_on_drop: false }`
[INFO] [stdout] 06f9800062968666bb3db9f82c1aaae97b7358083e7ccf574cc062902ef79b85
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-27/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-27/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9370105598ffd7b7fbd3c039a4c3af1a90f7f2e74ab44d07e01f690f4d48bae7
[INFO] running `Command { std: "docker" "start" "-a" "9370105598ffd7b7fbd3c039a4c3af1a90f7f2e74ab44d07e01f690f4d48bae7", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling leetcode v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused return value of `std::mem::replace` that must be used
[INFO] [stdout]   --> src/sorting/merge_arrays.rs:23:7
[INFO] [stdout]    |
[INFO] [stdout] 23 |       std::mem::replace(nums1, nums);
[INFO] [stdout]    |       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: if you don't need the old value, you can just assign the new value directly
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.30s
[INFO] running `Command { std: "docker" "inspect" "9370105598ffd7b7fbd3c039a4c3af1a90f7f2e74ab44d07e01f690f4d48bae7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9370105598ffd7b7fbd3c039a4c3af1a90f7f2e74ab44d07e01f690f4d48bae7", kill_on_drop: false }`
[INFO] [stdout] 9370105598ffd7b7fbd3c039a4c3af1a90f7f2e74ab44d07e01f690f4d48bae7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-27/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-27/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] bfeb4c420024524cf877fa3d3a9b77f07b501ba9838349670b4b1c2bdf44607f
[INFO] running `Command { std: "docker" "start" "-a" "bfeb4c420024524cf877fa3d3a9b77f07b501ba9838349670b4b1c2bdf44607f", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr] warning: unused return value of `std::mem::replace` that must be used
[INFO] [stderr]   --> src/sorting/merge_arrays.rs:23:7
[INFO] [stderr]    |
[INFO] [stderr] 23 |       std::mem::replace(nums1, nums);
[INFO] [stderr]    |       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]    = note: if you don't need the old value, you can just assign the new value directly
[INFO] [stderr] 
[INFO] [stderr] warning: `leetcode` (bin "leetcode" test) generated 1 warning
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.61s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/leetcode-2f2bc07b57188f35)
[INFO] [stdout] 
[INFO] [stdout] running 27 tests
[INFO] [stdout] test arrays::contains_duplicate::tests::contains_duplicate_test ... ok
[INFO] [stdout] test arrays::intersect::tests::intersect_test ... ok
[INFO] [stdout] test arrays::max_profit::tests::max_profit_test ... ok
[INFO] [stdout] test arrays::move_zeroes::test::move_zeroes_test ... ok
[INFO] [stdout] test arrays::plus_one::test::plus_one_test ... ok
[INFO] [stdout] test arrays::remove_duplicates_sorted::tests::remove_duplicates_test ... ok
[INFO] [stdout] test arrays::rotate_image::rotate_image::rotate_test ... ok
[INFO] [stdout] test arrays::single_number::tests::single_number_test ... ok
[INFO] [stdout] test arrays::rotate::tests::rotate_test ... ok
[INFO] [stdout] test arrays::split_n_add::test::test_basics ... ok
[INFO] [stdout] test arrays::two_sum::test::two_sum_test ... ok
[INFO] [stdout] test arrays::valid_sudoku::valid_sudoku::is_valid_sudoku_test ... ok
[INFO] [stdout] test codewars::readable_format::tests::test_basic ... ok
[INFO] [stdout] test codewars::recover_secret::test::example_test ... ok
[INFO] [stdout] test linked_list::remove_nth_node::test::remove_nth_from_end_test ... ok
[INFO] [stdout] test linked_list::revervse::test::reverse_list_test ... ok
[INFO] [stdout] test sorting::merge_arrays::test::merge_test ... ok
[INFO] [stdout] test string::atoi::test::my_atoi_test ... ok
[INFO] [stdout] test string::count_and_say::test::count_and_say_test ... ok
[INFO] [stdout] test string::index_of::test::str_str_test ... ok
[INFO] [stdout] test string::longest_prefix::test::longest_common_prefix_test ... ok
[INFO] [stdout] test string::reverse::test::reverse_string_test ... ok
[INFO] [stdout] test string::palindrome::test::is_palindrome_test ... ok
[INFO] [stdout] test string::uniq_char::uniq_char::first_uniq_char_test ... ok
[INFO] [stdout] test string::reverse_int::test::reverse_test ... ok
[INFO] [stdout] test string::valid_anagram::test::is_anagram_test ... ok
[INFO] [stdout] test codewars::screen_lock::tests::basic_tests ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 27 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.19s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "bfeb4c420024524cf877fa3d3a9b77f07b501ba9838349670b4b1c2bdf44607f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bfeb4c420024524cf877fa3d3a9b77f07b501ba9838349670b4b1c2bdf44607f", kill_on_drop: false }`
[INFO] [stdout] bfeb4c420024524cf877fa3d3a9b77f07b501ba9838349670b4b1c2bdf44607f