[INFO] cloning repository https://github.com/dplusic/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/dplusic/leetcode-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdplusic%2Fleetcode-rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdplusic%2Fleetcode-rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] ba80fd1fbe4936accdaf8644b075bd28983661ef
[INFO] testing dplusic/leetcode-rust 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%2Fdplusic%2Fleetcode-rust" "/workspace/builds/worker-62/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-62/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/dplusic/leetcode-rust 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/dplusic/leetcode-rust
[INFO] finished tweaking git repo https://github.com/dplusic/leetcode-rust
[INFO] tweaked toml for git repo https://github.com/dplusic/leetcode-rust written to /workspace/builds/worker-62/source/Cargo.toml
[INFO] crate git repo https://github.com/dplusic/leetcode-rust 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-62/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-62/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] 8c336cfd0d159fa3780a65ef2f16a5648ca3badb6c307eaa20ea0300e4dc49fb
[INFO] running `Command { std: "docker" "start" "-a" "8c336cfd0d159fa3780a65ef2f16a5648ca3badb6c307eaa20ea0300e4dc49fb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8c336cfd0d159fa3780a65ef2f16a5648ca3badb6c307eaa20ea0300e4dc49fb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8c336cfd0d159fa3780a65ef2f16a5648ca3badb6c307eaa20ea0300e4dc49fb", kill_on_drop: false }`
[INFO] [stdout] 8c336cfd0d159fa3780a65ef2f16a5648ca3badb6c307eaa20ea0300e4dc49fb
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-62/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-62/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] b1ed0490e829422fa1cb9528551ec6090ff1b1cbda744039365fa7687eb49524
[INFO] running `Command { std: "docker" "start" "-a" "b1ed0490e829422fa1cb9528551ec6090ff1b1cbda744039365fa7687eb49524", kill_on_drop: false }`
[INFO] [stderr]    Compiling leetcode-rust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: this method call resolves to `<&[T; N] as IntoIterator>::into_iter` (due to backwards compatibility), but will resolve to <[T; N] as IntoIterator>::into_iter in Rust 2021
[INFO] [stdout]   --> src/n0679_24_game.rs:25:75
[INFO] [stdout]    |
[INFO] [stdout] 25 |                 for operator_placement in OPERATOR_PLACEMENT_COMBINATIONS.into_iter() {
[INFO] [stdout]    |                                                                           ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(array_into_iter)]` on by default
[INFO] [stdout]    = warning: this changes meaning in Rust 2021
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/IntoIterator-for-arrays.html>
[INFO] [stdout] help: use `.iter()` instead of `.into_iter()` to avoid ambiguity
[INFO] [stdout]    |
[INFO] [stdout] 25 |                 for operator_placement in OPERATOR_PLACEMENT_COMBINATIONS.iter() {
[INFO] [stdout]    |                                                                           ~~~~
[INFO] [stdout] help: or remove `.into_iter()` to iterate by value
[INFO] [stdout]    |
[INFO] [stdout] 25 -                 for operator_placement in OPERATOR_PLACEMENT_COMBINATIONS.into_iter() {
[INFO] [stdout] 25 +                 for operator_placement in OPERATOR_PLACEMENT_COMBINATIONS {
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.89s
[INFO] running `Command { std: "docker" "inspect" "b1ed0490e829422fa1cb9528551ec6090ff1b1cbda744039365fa7687eb49524", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b1ed0490e829422fa1cb9528551ec6090ff1b1cbda744039365fa7687eb49524", kill_on_drop: false }`
[INFO] [stdout] b1ed0490e829422fa1cb9528551ec6090ff1b1cbda744039365fa7687eb49524
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-62/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-62/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] 4ec10477c6f94751ded9f0faa4869dc2254247455e8d62675977afbb47aa1138
[INFO] running `Command { std: "docker" "start" "-a" "4ec10477c6f94751ded9f0faa4869dc2254247455e8d62675977afbb47aa1138", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling leetcode-rust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: this method call resolves to `<&[T; N] as IntoIterator>::into_iter` (due to backwards compatibility), but will resolve to <[T; N] as IntoIterator>::into_iter in Rust 2021
[INFO] [stdout]   --> src/n0679_24_game.rs:25:75
[INFO] [stdout]    |
[INFO] [stdout] 25 |                 for operator_placement in OPERATOR_PLACEMENT_COMBINATIONS.into_iter() {
[INFO] [stdout]    |                                                                           ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(array_into_iter)]` on by default
[INFO] [stdout]    = warning: this changes meaning in Rust 2021
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/IntoIterator-for-arrays.html>
[INFO] [stdout] help: use `.iter()` instead of `.into_iter()` to avoid ambiguity
[INFO] [stdout]    |
[INFO] [stdout] 25 |                 for operator_placement in OPERATOR_PLACEMENT_COMBINATIONS.iter() {
[INFO] [stdout]    |                                                                           ~~~~
[INFO] [stdout] help: or remove `.into_iter()` to iterate by value
[INFO] [stdout]    |
[INFO] [stdout] 25 -                 for operator_placement in OPERATOR_PLACEMENT_COMBINATIONS.into_iter() {
[INFO] [stdout] 25 +                 for operator_placement in OPERATOR_PLACEMENT_COMBINATIONS {
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 19.27s
[INFO] [stderr]   Executable unittests src/main.rs (/opt/rustwide/target/debug/deps/leetcode_rust-10f0677b39af5ce2)
[INFO] running `Command { std: "docker" "inspect" "4ec10477c6f94751ded9f0faa4869dc2254247455e8d62675977afbb47aa1138", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4ec10477c6f94751ded9f0faa4869dc2254247455e8d62675977afbb47aa1138", kill_on_drop: false }`
[INFO] [stdout] 4ec10477c6f94751ded9f0faa4869dc2254247455e8d62675977afbb47aa1138
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-62/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-62/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] 7a397a414728238da22f7034296ad7087a73b688fd0140d0ce3e02cf9bad774d
[INFO] running `Command { std: "docker" "start" "-a" "7a397a414728238da22f7034296ad7087a73b688fd0140d0ce3e02cf9bad774d", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr] warning: this method call resolves to `<&[T; N] as IntoIterator>::into_iter` (due to backwards compatibility), but will resolve to <[T; N] as IntoIterator>::into_iter in Rust 2021
[INFO] [stderr]   --> src/n0679_24_game.rs:25:75
[INFO] [stderr]    |
[INFO] [stderr] 25 |                 for operator_placement in OPERATOR_PLACEMENT_COMBINATIONS.into_iter() {
[INFO] [stderr]    |                                                                           ^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(array_into_iter)]` on by default
[INFO] [stderr]    = warning: this changes meaning in Rust 2021
[INFO] [stderr]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/IntoIterator-for-arrays.html>
[INFO] [stderr] help: use `.iter()` instead of `.into_iter()` to avoid ambiguity
[INFO] [stderr]    |
[INFO] [stderr] 25 |                 for operator_placement in OPERATOR_PLACEMENT_COMBINATIONS.iter() {
[INFO] [stderr]    |                                                                           ~~~~
[INFO] [stderr] help: or remove `.into_iter()` to iterate by value
[INFO] [stderr]    |
[INFO] [stderr] 25 -                 for operator_placement in OPERATOR_PLACEMENT_COMBINATIONS.into_iter() {
[INFO] [stderr] 25 +                 for operator_placement in OPERATOR_PLACEMENT_COMBINATIONS {
[INFO] [stderr]    | 
[INFO] [stderr] 
[INFO] [stderr] warning: `leetcode-rust` (bin "leetcode-rust" test) generated 1 warning
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.54s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/leetcode_rust-10f0677b39af5ce2)
[INFO] [stdout] 
[INFO] [stdout] running 8 tests
[INFO] [stdout] test n0731_my_calendar_ii::test_book_intersected_1 ... ok
[INFO] [stdout] test n0679_24_game::test_permutator ... ok
[INFO] [stdout] test n0731_my_calendar_ii::test_book_intersected_2 ... ok
[INFO] [stdout] test n0679_24_game::test_permutator_with_repetition ... ok
[INFO] [stdout] test n0731_my_calendar_ii::test_book_intersected_3 ... ok
[INFO] [stdout] test n0731_my_calendar_ii::test_book_intersected_4 ... ok
[INFO] [stdout] test n0731_my_calendar_ii::test_book_intersected_5 ... ok
[INFO] [stdout] test n0731_my_calendar_ii::test_book_intersected_6 ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 8 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "7a397a414728238da22f7034296ad7087a73b688fd0140d0ce3e02cf9bad774d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7a397a414728238da22f7034296ad7087a73b688fd0140d0ce3e02cf9bad774d", kill_on_drop: false }`
[INFO] [stdout] 7a397a414728238da22f7034296ad7087a73b688fd0140d0ce3e02cf9bad774d