[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] checking u2/leetcode-rust against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fu2%2Fleetcode-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/u2/leetcode-rust on toolchain 385fa9d845dd326c6bbfd58c22244215e431948a [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", 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-3-tc1/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: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Downloading crates ... [INFO] [stderr] Downloaded thread-id v3.0.0 [INFO] [stderr] Downloaded thread_local v0.3.2 [INFO] [stderr] Downloaded memchr v1.0.1 [INFO] [stderr] Downloaded regex-syntax v0.4.0 [INFO] [stderr] Downloaded libc v0.2.20 [INFO] [stderr] Downloaded aho-corasick v0.6.1 [INFO] [stderr] Downloaded regex v0.2.1 [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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 4bb0aecf8ce96336759d12445e63e28026d3d494c28f04425e89fade9a42513a [INFO] running `Command { std: "docker" "start" "-a" "4bb0aecf8ce96336759d12445e63e28026d3d494c28f04425e89fade9a42513a", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "4bb0aecf8ce96336759d12445e63e28026d3d494c28f04425e89fade9a42513a", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "4bb0aecf8ce96336759d12445e63e28026d3d494c28f04425e89fade9a42513a", kill_on_drop: false }` [INFO] [stdout] 4bb0aecf8ce96336759d12445e63e28026d3d494c28f04425e89fade9a42513a [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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 4b7260150adec49c963a5bd43621ccedc03c86066b3a68bb28744920aa2ef45b [INFO] running `Command { std: "docker" "start" "-a" "4b7260150adec49c963a5bd43621ccedc03c86066b3a68bb28744920aa2ef45b", kill_on_drop: false }` [INFO] [stderr] Checking libc v0.2.20 [INFO] [stderr] Checking unreachable v0.1.1 [INFO] [stderr] Checking regex-syntax v0.4.0 [INFO] [stderr] Checking utf8-ranges v1.0.0 [INFO] [stderr] Checking memchr v1.0.1 [INFO] [stderr] Checking thread-id v3.0.0 [INFO] [stderr] Checking thread_local v0.3.2 [INFO] [stderr] Checking aho-corasick v0.6.1 [INFO] [stderr] Checking regex v0.2.1 [INFO] [stderr] Checking 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::>(); [INFO] [stdout] | ^ ^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_parens)]` on by default [INFO] [stdout] help: remove these parentheses [INFO] [stdout] | [INFO] [stdout] 7 - let array: Vec<(char)> = s.char_indices().map(|i| i.1).collect::>(); [INFO] [stdout] 7 + let array: Vec = s.char_indices().map(|i| i.1).collect::>(); [INFO] [stdout] | [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] | ^ ^ [INFO] [stdout] | [INFO] [stdout] help: remove these parentheses [INFO] [stdout] | [INFO] [stdout] 8 - let mut c: VecDeque<(char)> = VecDeque::with_capacity(s.char_indices().count()); [INFO] [stdout] 8 + let mut c: VecDeque = VecDeque::with_capacity(s.char_indices().count()); [INFO] [stdout] | [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::>(); [INFO] [stdout] | ^ ^ [INFO] [stdout] | [INFO] [stdout] help: remove these parentheses [INFO] [stdout] | [INFO] [stdout] 39 - let array: Vec<(char)> = s.char_indices().map(|i| i.1).collect::>(); [INFO] [stdout] 39 + let array: Vec = s.char_indices().map(|i| i.1).collect::>(); [INFO] [stdout] | [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::>(); [INFO] [stdout] | ^ ^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_parens)]` on by default [INFO] [stdout] help: remove these parentheses [INFO] [stdout] | [INFO] [stdout] 7 - let array: Vec<(char)> = s.char_indices().map(|i| i.1).collect::>(); [INFO] [stdout] 7 + let array: Vec = s.char_indices().map(|i| i.1).collect::>(); [INFO] [stdout] | [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] | ^ ^ [INFO] [stdout] | [INFO] [stdout] help: remove these parentheses [INFO] [stdout] | [INFO] [stdout] 8 - let mut c: VecDeque<(char)> = VecDeque::with_capacity(s.char_indices().count()); [INFO] [stdout] 8 + let mut c: VecDeque = VecDeque::with_capacity(s.char_indices().count()); [INFO] [stdout] | [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::>(); [INFO] [stdout] | ^ ^ [INFO] [stdout] | [INFO] [stdout] help: remove these parentheses [INFO] [stdout] | [INFO] [stdout] 39 - let array: Vec<(char)> = s.char_indices().map(|i| i.1).collect::>(); [INFO] [stdout] 39 + let array: Vec = s.char_indices().map(|i| i.1).collect::>(); [INFO] [stdout] | [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] | ^^^^^ the arithmetic operation produces a value [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_must_use)]` on by default [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 42 | let _ = j - 1; [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 4 warnings emitted [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] | ^^^^^ the arithmetic operation produces a value [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_must_use)]` on by default [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 42 | let _ = j - 1; [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 4 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.70s [INFO] running `Command { std: "docker" "inspect" "4b7260150adec49c963a5bd43621ccedc03c86066b3a68bb28744920aa2ef45b", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "4b7260150adec49c963a5bd43621ccedc03c86066b3a68bb28744920aa2ef45b", kill_on_drop: false }` [INFO] [stdout] 4b7260150adec49c963a5bd43621ccedc03c86066b3a68bb28744920aa2ef45b [INFO] checking u2/leetcode-rust against try#645bb72776a6a56a1a8f52631a44bd082b2ba509 for absurd-question-mark-desugar [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fu2%2Fleetcode-rust" "/workspace/builds/worker-3-tc2/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc2/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/u2/leetcode-rust on toolchain 645bb72776a6a56a1a8f52631a44bd082b2ba509 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", 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-3-tc2/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: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "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-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 51cd2b0ac8d3d98f25472426fa16fbefd244dbc8249a0d867eeaf9d1f071fb9c [INFO] running `Command { std: "docker" "start" "-a" "51cd2b0ac8d3d98f25472426fa16fbefd244dbc8249a0d867eeaf9d1f071fb9c", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "51cd2b0ac8d3d98f25472426fa16fbefd244dbc8249a0d867eeaf9d1f071fb9c", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "51cd2b0ac8d3d98f25472426fa16fbefd244dbc8249a0d867eeaf9d1f071fb9c", kill_on_drop: false }` [INFO] [stdout] 51cd2b0ac8d3d98f25472426fa16fbefd244dbc8249a0d867eeaf9d1f071fb9c [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] e458405d9b5ef3dbc35e0a128fc8d1d1e7482e48a77a8c6c6f5e84913d507f87 [INFO] running `Command { std: "docker" "start" "-a" "e458405d9b5ef3dbc35e0a128fc8d1d1e7482e48a77a8c6c6f5e84913d507f87", kill_on_drop: false }` [INFO] [stderr] Checking libc v0.2.20 [INFO] [stderr] Checking unreachable v0.1.1 [INFO] [stderr] Checking regex-syntax v0.4.0 [INFO] [stderr] Checking utf8-ranges v1.0.0 [INFO] [stderr] Checking memchr v1.0.1 [INFO] [stderr] Checking thread-id v3.0.0 [INFO] [stderr] Checking thread_local v0.3.2 [INFO] [stderr] Checking aho-corasick v0.6.1 [INFO] [stderr] Checking regex v0.2.1 [INFO] [stderr] Checking 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::>(); [INFO] [stdout] | ^ ^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_parens)]` on by default [INFO] [stdout] help: remove these parentheses [INFO] [stdout] | [INFO] [stdout] 7 - let array: Vec<(char)> = s.char_indices().map(|i| i.1).collect::>(); [INFO] [stdout] 7 + let array: Vec = s.char_indices().map(|i| i.1).collect::>(); [INFO] [stdout] | [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] | ^ ^ [INFO] [stdout] | [INFO] [stdout] help: remove these parentheses [INFO] [stdout] | [INFO] [stdout] 8 - let mut c: VecDeque<(char)> = VecDeque::with_capacity(s.char_indices().count()); [INFO] [stdout] 8 + let mut c: VecDeque = VecDeque::with_capacity(s.char_indices().count()); [INFO] [stdout] | [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::>(); [INFO] [stdout] | ^ ^ [INFO] [stdout] | [INFO] [stdout] help: remove these parentheses [INFO] [stdout] | [INFO] [stdout] 39 - let array: Vec<(char)> = s.char_indices().map(|i| i.1).collect::>(); [INFO] [stdout] 39 + let array: Vec = s.char_indices().map(|i| i.1).collect::>(); [INFO] [stdout] | [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::>(); [INFO] [stdout] | ^ ^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_parens)]` on by default [INFO] [stdout] help: remove these parentheses [INFO] [stdout] | [INFO] [stdout] 7 - let array: Vec<(char)> = s.char_indices().map(|i| i.1).collect::>(); [INFO] [stdout] 7 + let array: Vec = s.char_indices().map(|i| i.1).collect::>(); [INFO] [stdout] | [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] | ^ ^ [INFO] [stdout] | [INFO] [stdout] help: remove these parentheses [INFO] [stdout] | [INFO] [stdout] 8 - let mut c: VecDeque<(char)> = VecDeque::with_capacity(s.char_indices().count()); [INFO] [stdout] 8 + let mut c: VecDeque = VecDeque::with_capacity(s.char_indices().count()); [INFO] [stdout] | [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::>(); [INFO] [stdout] | ^ ^ [INFO] [stdout] | [INFO] [stdout] help: remove these parentheses [INFO] [stdout] | [INFO] [stdout] 39 - let array: Vec<(char)> = s.char_indices().map(|i| i.1).collect::>(); [INFO] [stdout] 39 + let array: Vec = s.char_indices().map(|i| i.1).collect::>(); [INFO] [stdout] | [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] | ^^^^^ the arithmetic operation produces a value [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_must_use)]` on by default [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 42 | let _ = j - 1; [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 4 warnings emitted [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] | ^^^^^ the arithmetic operation produces a value [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_must_use)]` on by default [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 42 | let _ = j - 1; [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 4 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.69s [INFO] running `Command { std: "docker" "inspect" "e458405d9b5ef3dbc35e0a128fc8d1d1e7482e48a77a8c6c6f5e84913d507f87", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "e458405d9b5ef3dbc35e0a128fc8d1d1e7482e48a77a8c6c6f5e84913d507f87", kill_on_drop: false }` [INFO] [stdout] e458405d9b5ef3dbc35e0a128fc8d1d1e7482e48a77a8c6c6f5e84913d507f87