[INFO] cloning repository https://github.com/u2/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/u2/leetcode-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fu2%2Fleetcode-rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fu2%2Fleetcode-rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 23722bdf01b8f3a080af49de576ff52ccbc1c27a
[INFO] testing u2/leetcode-rust against try#eafdee2dfae8c2233b74f98b123308be7ccefcc6 for pr-79296
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fu2%2Fleetcode-rust" "/workspace/builds/worker-11/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-11/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/u2/leetcode-rust on toolchain eafdee2dfae8c2233b74f98b123308be7ccefcc6
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+eafdee2dfae8c2233b74f98b123308be7ccefcc6" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/u2/leetcode-rust
[INFO] finished tweaking git repo https://github.com/u2/leetcode-rust
[INFO] tweaked toml for git repo https://github.com/u2/leetcode-rust written to /workspace/builds/worker-11/source/Cargo.toml
[INFO] crate git repo https://github.com/u2/leetcode-rust already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+eafdee2dfae8c2233b74f98b123308be7ccefcc6" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded aho-corasick v0.6.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+eafdee2dfae8c2233b74f98b123308be7ccefcc6" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8549e8391cead3f4313f2fe92a58403869697efb069e9278c4afc52311f5069b
[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" "8549e8391cead3f4313f2fe92a58403869697efb069e9278c4afc52311f5069b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8549e8391cead3f4313f2fe92a58403869697efb069e9278c4afc52311f5069b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8549e8391cead3f4313f2fe92a58403869697efb069e9278c4afc52311f5069b", kill_on_drop: false }`
[INFO] [stdout] 8549e8391cead3f4313f2fe92a58403869697efb069e9278c4afc52311f5069b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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" "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@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+eafdee2dfae8c2233b74f98b123308be7ccefcc6" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 824c5b330fccea062f3e6ae7e342d98457883c0c11a32cd3b891ffbe3707008b
[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" "824c5b330fccea062f3e6ae7e342d98457883c0c11a32cd3b891ffbe3707008b", kill_on_drop: false }`
[INFO] [stderr]    Compiling void v1.0.2
[INFO] [stderr]    Compiling aho-corasick v0.6.1
[INFO] [stderr]    Compiling unreachable v0.1.1
[INFO] [stderr]    Compiling thread_local v0.3.2
[INFO] [stderr]    Compiling regex v0.2.1
[INFO] [stderr]    Compiling leetcode v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]  --> src/length_of_longest_substring.rs:7:20
[INFO] [stdout]   |
[INFO] [stdout] 7 |     let array: Vec<(char)> = s.char_indices().map(|i| i.1).collect::<Vec<_>>();
[INFO] [stdout]   |                    ^^^^^^ help: remove these parentheses
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]  --> src/length_of_longest_substring.rs:8:25
[INFO] [stdout]   |
[INFO] [stdout] 8 |     let mut c: VecDeque<(char)> = VecDeque::with_capacity(s.char_indices().count());
[INFO] [stdout]   |                         ^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]   --> src/length_of_longest_substring.rs:39:20
[INFO] [stdout]    |
[INFO] [stdout] 39 |     let array: Vec<(char)> = s.char_indices().map(|i| i.1).collect::<Vec<_>>();
[INFO] [stdout]    |                    ^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused arithmetic operation that must be used
[INFO] [stdout]   --> src/find_median_sorted_arrays.rs:42:13
[INFO] [stdout]    |
[INFO] [stdout] 42 |             j - 1;
[INFO] [stdout]    |             ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 9.43s
[INFO] running `Command { std: "docker" "inspect" "824c5b330fccea062f3e6ae7e342d98457883c0c11a32cd3b891ffbe3707008b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "824c5b330fccea062f3e6ae7e342d98457883c0c11a32cd3b891ffbe3707008b", kill_on_drop: false }`
[INFO] [stdout] 824c5b330fccea062f3e6ae7e342d98457883c0c11a32cd3b891ffbe3707008b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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" "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@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+eafdee2dfae8c2233b74f98b123308be7ccefcc6" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 030f8c497519c565855d8fca77a799e416de6ff5961c2e0d6ed7c65d644eaad5
[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" "030f8c497519c565855d8fca77a799e416de6ff5961c2e0d6ed7c65d644eaad5", kill_on_drop: false }`
[INFO] [stderr]    Compiling leetcode v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]  --> src/length_of_longest_substring.rs:7:20
[INFO] [stdout]   |
[INFO] [stdout] 7 |     let array: Vec<(char)> = s.char_indices().map(|i| i.1).collect::<Vec<_>>();
[INFO] [stdout]   |                    ^^^^^^ help: remove these parentheses
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]  --> src/length_of_longest_substring.rs:8:25
[INFO] [stdout]   |
[INFO] [stdout] 8 |     let mut c: VecDeque<(char)> = VecDeque::with_capacity(s.char_indices().count());
[INFO] [stdout]   |                         ^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]   --> src/length_of_longest_substring.rs:39:20
[INFO] [stdout]    |
[INFO] [stdout] 39 |     let array: Vec<(char)> = s.char_indices().map(|i| i.1).collect::<Vec<_>>();
[INFO] [stdout]    |                    ^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused arithmetic operation that must be used
[INFO] [stdout]   --> src/find_median_sorted_arrays.rs:42:13
[INFO] [stdout]    |
[INFO] [stdout] 42 |             j - 1;
[INFO] [stdout]    |             ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]  --> src/length_of_longest_substring.rs:7:20
[INFO] [stdout]   |
[INFO] [stdout] 7 |     let array: Vec<(char)> = s.char_indices().map(|i| i.1).collect::<Vec<_>>();
[INFO] [stdout]   |                    ^^^^^^ help: remove these parentheses
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]  --> src/length_of_longest_substring.rs:8:25
[INFO] [stdout]   |
[INFO] [stdout] 8 |     let mut c: VecDeque<(char)> = VecDeque::with_capacity(s.char_indices().count());
[INFO] [stdout]   |                         ^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]   --> src/length_of_longest_substring.rs:39:20
[INFO] [stdout]    |
[INFO] [stdout] 39 |     let array: Vec<(char)> = s.char_indices().map(|i| i.1).collect::<Vec<_>>();
[INFO] [stdout]    |                    ^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused arithmetic operation that must be used
[INFO] [stdout]   --> src/find_median_sorted_arrays.rs:42:13
[INFO] [stdout]    |
[INFO] [stdout] 42 |             j - 1;
[INFO] [stdout]    |             ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 2.76s
[INFO] running `Command { std: "docker" "inspect" "030f8c497519c565855d8fca77a799e416de6ff5961c2e0d6ed7c65d644eaad5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "030f8c497519c565855d8fca77a799e416de6ff5961c2e0d6ed7c65d644eaad5", kill_on_drop: false }`
[INFO] [stdout] 030f8c497519c565855d8fca77a799e416de6ff5961c2e0d6ed7c65d644eaad5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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" "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@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+eafdee2dfae8c2233b74f98b123308be7ccefcc6" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] fa5cb52139667a386ebdc7938c0e77258f5196526ed14cd25fd640a60d3bd16a
[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" "fa5cb52139667a386ebdc7938c0e77258f5196526ed14cd25fd640a60d3bd16a", kill_on_drop: false }`
[INFO] [stdout] 
[INFO] [stderr] warning: unnecessary parentheses around type
[INFO] [stdout] running 20 tests
[INFO] [stderr]  --> src/length_of_longest_substring.rs:7:20
[INFO] [stdout] test add_two_numbers::test::test_add_two_numbers ... ok
[INFO] [stderr]   |
[INFO] [stdout] test find_median_sorted_arrays::test::test_find_median_sorted_arrays ... ok
[INFO] [stderr] 7 |     let array: Vec<(char)> = s.char_indices().map(|i| i.1).collect::<Vec<_>>();
[INFO] [stdout] test palindrome_number::test::test_palindrome_number ... ok
[INFO] [stderr]   |                    ^^^^^^ help: remove these parentheses
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around type
[INFO] [stderr]  --> src/length_of_longest_substring.rs:8:25
[INFO] [stderr]   |
[INFO] [stderr] 8 |     let mut c: VecDeque<(char)> = VecDeque::with_capacity(s.char_indices().count());
[INFO] [stderr]   |                         ^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around type
[INFO] [stderr]   --> src/length_of_longest_substring.rs:39:20
[INFO] [stderr]    |
[INFO] [stderr] 39 |     let array: Vec<(char)> = s.char_indices().map(|i| i.1).collect::<Vec<_>>();
[INFO] [stderr]    |                    ^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unused arithmetic operation that must be used
[INFO] [stderr]   --> src/find_median_sorted_arrays.rs:42:13
[INFO] [stderr]    |
[INFO] [stderr] 42 |             j - 1;
[INFO] [stderr]    |             ^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 4 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around type
[INFO] [stderr]  --> src/length_of_longest_substring.rs:7:20
[INFO] [stderr]   |
[INFO] [stderr] 7 |     let array: Vec<(char)> = s.char_indices().map(|i| i.1).collect::<Vec<_>>();
[INFO] [stderr]   |                    ^^^^^^ help: remove these parentheses
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around type
[INFO] [stderr]  --> src/length_of_longest_substring.rs:8:25
[INFO] [stderr]   |
[INFO] [stderr] 8 |     let mut c: VecDeque<(char)> = VecDeque::with_capacity(s.char_indices().count());
[INFO] [stderr]   |                         ^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around type
[INFO] [stderr]   --> src/length_of_longest_substring.rs:39:20
[INFO] [stderr]    |
[INFO] [stderr] 39 |     let array: Vec<(char)> = s.char_indices().map(|i| i.1).collect::<Vec<_>>();
[INFO] [stderr]    |                    ^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unused arithmetic operation that must be used
[INFO] [stderr]   --> src/find_median_sorted_arrays.rs:42:13
[INFO] [stderr]    |
[INFO] [stderr] 42 |             j - 1;
[INFO] [stderr]    |             ^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 4 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/leetcode-ea8822109657b234
[INFO] [stdout] test reverse_integer::test::test_reverse_integer ... ok
[INFO] [stdout] test longest_palindrome::test::test_longest_palindrome ... ok
[INFO] [stdout] test length_of_longest_substring::test::bench_length_of_longest_substring ... ok
[INFO] [stdout] test longest_palindrome::test::test_is_palindrome ... ok
[INFO] [stdout] test zigzag_conversion::test::test_zigzag_conversion ... ok
[INFO] [stdout] test two_sum::test::test_two_sum_approach_two ... ok
[INFO] [stdout] test atoi::test::test_atoi ... ok
[INFO] [stdout] test length_of_longest_substring::test::test_length_of_longest_substring ... ok
[INFO] [stdout] test regular_expression_matching::test::test_regular_expression_matching ... ok
[INFO] [stdout] test length_of_longest_substring::test::bench_approach_two ... ok
[INFO] [stdout] test two_sum::test::bench_two_sum_approach_two ... ok
[INFO] [stdout] test longest_palindrome::test::test_find_longest_palindrome ... ok
[INFO] [stdout] test length_of_longest_substring::test::test_approach_two ... ok
[INFO] [stdout] test two_sum::test::bench_two_sum ... ok
[INFO] [stdout] test two_sum::test::test_two_sum ... ok
[INFO] [stdout] test longest_palindrome::test::bench_find_longest_palindrome ... ok
[INFO] [stderr]    Doc-tests leetcode
[INFO] [stdout] test longest_palindrome::test::bench_longest_palindrome ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 20 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr] warning: unnecessary parentheses around type
[INFO] [stderr]  --> /opt/rustwide/workdir/src/length_of_longest_substring.rs:7:20
[INFO] [stderr]   |
[INFO] [stderr] 7 |     let array: Vec<(char)> = s.char_indices().map(|i| i.1).collect::<Vec<_>>();
[INFO] [stderr]   |                    ^^^^^^ help: remove these parentheses
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around type
[INFO] [stderr]  --> /opt/rustwide/workdir/src/length_of_longest_substring.rs:8:25
[INFO] [stderr]   |
[INFO] [stderr] 8 |     let mut c: VecDeque<(char)> = VecDeque::with_capacity(s.char_indices().count());
[INFO] [stderr]   |                         ^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around type
[INFO] [stderr]   --> /opt/rustwide/workdir/src/length_of_longest_substring.rs:39:20
[INFO] [stderr]    |
[INFO] [stderr] 39 |     let array: Vec<(char)> = s.char_indices().map(|i| i.1).collect::<Vec<_>>();
[INFO] [stderr]    |                    ^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: 3 warnings emitted
[INFO] [stderr] 
[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
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "fa5cb52139667a386ebdc7938c0e77258f5196526ed14cd25fd640a60d3bd16a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fa5cb52139667a386ebdc7938c0e77258f5196526ed14cd25fd640a60d3bd16a", kill_on_drop: false }`
[INFO] [stdout] fa5cb52139667a386ebdc7938c0e77258f5196526ed14cd25fd640a60d3bd16a