[INFO] cloning repository https://github.com/yu-hasebe/leetcode_problems
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/yu-hasebe/leetcode_problems" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyu-hasebe%2Fleetcode_problems", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyu-hasebe%2Fleetcode_problems'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 078bf1b3cbd154076c17e35933e0dc8537480f69
[INFO] testing yu-hasebe/leetcode_problems against beta-2021-01-01 for beta-1.50-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyu-hasebe%2Fleetcode_problems" "/workspace/builds/worker-4/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/yu-hasebe/leetcode_problems on toolchain beta-2021-01-01
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/yu-hasebe/leetcode_problems
[INFO] finished tweaking git repo https://github.com/yu-hasebe/leetcode_problems
[INFO] tweaked toml for git repo https://github.com/yu-hasebe/leetcode_problems written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/yu-hasebe/leetcode_problems already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b83cc799f20a1b647b9f191b2ea921078943fe24b7d1e2fdb13e3f1fe76ddbc5
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "b83cc799f20a1b647b9f191b2ea921078943fe24b7d1e2fdb13e3f1fe76ddbc5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b83cc799f20a1b647b9f191b2ea921078943fe24b7d1e2fdb13e3f1fe76ddbc5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b83cc799f20a1b647b9f191b2ea921078943fe24b7d1e2fdb13e3f1fe76ddbc5", kill_on_drop: false }`
[INFO] [stdout] b83cc799f20a1b647b9f191b2ea921078943fe24b7d1e2fdb13e3f1fe76ddbc5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ea0564420e773adc9c0473f85fbe723f54bb1a5334d620bdb3f4a15ef42ef1d6
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "ea0564420e773adc9c0473f85fbe723f54bb1a5334d620bdb3f4a15ef42ef1d6", kill_on_drop: false }`
[INFO] [stderr]    Compiling leetcode_problems v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/answers/n19_remove_nth_node_from_end_of_list.rs:12:8
[INFO] [stdout]    |
[INFO] [stdout] 12 |     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: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.87s
[INFO] running `Command { std: "docker" "inspect" "ea0564420e773adc9c0473f85fbe723f54bb1a5334d620bdb3f4a15ef42ef1d6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ea0564420e773adc9c0473f85fbe723f54bb1a5334d620bdb3f4a15ef42ef1d6", kill_on_drop: false }`
[INFO] [stdout] ea0564420e773adc9c0473f85fbe723f54bb1a5334d620bdb3f4a15ef42ef1d6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 055f1e4f63425baabf3ed61753a839528f0843c3f206ecfdf27a60232934bf79
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "055f1e4f63425baabf3ed61753a839528f0843c3f206ecfdf27a60232934bf79", kill_on_drop: false }`
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/answers/n19_remove_nth_node_from_end_of_list.rs:12:8
[INFO] [stdout]    |
[INFO] [stdout] 12 |     fn new(val: i32) -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling leetcode_problems v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 2.18s
[INFO] running `Command { std: "docker" "inspect" "055f1e4f63425baabf3ed61753a839528f0843c3f206ecfdf27a60232934bf79", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "055f1e4f63425baabf3ed61753a839528f0843c3f206ecfdf27a60232934bf79", kill_on_drop: false }`
[INFO] [stdout] 055f1e4f63425baabf3ed61753a839528f0843c3f206ecfdf27a60232934bf79
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 62c2c0a4df1598be357820148daf3064134c90d3714689e1ccf5e98fdb347f88
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "62c2c0a4df1598be357820148daf3064134c90d3714689e1ccf5e98fdb347f88", kill_on_drop: false }`
[INFO] [stderr] warning: associated function is never used: `new`
[INFO] [stderr]   --> src/answers/n19_remove_nth_node_from_end_of_list.rs:12:8
[INFO] [stderr]    |
[INFO] [stderr] 12 |     fn new(val: i32) -> Self {
[INFO] [stderr]    |        ^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/leetcode_problems-9e074d12f6062e93
[INFO] [stdout] 
[INFO] [stdout] running 15 tests
[INFO] [stdout] test answers::n3_longest_substring_without_repeating_characters::tests::test_length_of_longest_substring ... ok
[INFO] [stdout] test answers::n5_longest_palindromic_substring::tests::test_longest_palindrome ... ok
[INFO] [stdout] test answers::n34_find_first_and_last_position_of_element_in_sorted_array::tests::test_search_range ... ok
[INFO] [stdout] test answers::n33_search_in_rotated_sorted_array::tests::test_search2 ... ok
[INFO] [stdout] test answers::n33_search_in_rotated_sorted_array::tests::test_search ... ok
[INFO] [stdout] test answers::n2_add_two_numbers::tests::test_add_two_numbers ... ok
[INFO] [stdout] test answers::n22_generate_parentheses::tests::test_generate_parenthesis ... ok
[INFO] [stdout] test answers::n11_container_with_most_water::tests::test_max_area ... ok
[INFO] [stdout] test answers::n21_merge_two_sorted_list::tests::test_merge_two_lists ... ok
[INFO] [stdout] test answers::n15_3sum::tests::test_three_sum ... ok
[INFO] [stdout] test answers::n1_two_sum::tests::test_two_sum ... ok
[INFO] [stdout] test answers::n19_remove_nth_node_from_end_of_list::tests::test_remove_nth_from_end_2 ... ok
[INFO] [stdout] test answers::n20_valid_parentheses::tests::test_is_valid ... ok
[INFO] [stdout] test answers::n19_remove_nth_node_from_end_of_list::tests::test_remove_nth_from_end ... ok
[INFO] [stdout] test answers::n17_letter_combinations_of_a_phone_number::tests::test_letter_combinations ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 15 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests leetcode_problems
[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" "62c2c0a4df1598be357820148daf3064134c90d3714689e1ccf5e98fdb347f88", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "62c2c0a4df1598be357820148daf3064134c90d3714689e1ccf5e98fdb347f88", kill_on_drop: false }`
[INFO] [stdout] 62c2c0a4df1598be357820148daf3064134c90d3714689e1ccf5e98fdb347f88