[INFO] cloning repository https://github.com/sue71/leetcode [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/sue71/leetcode" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsue71%2Fleetcode", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsue71%2Fleetcode'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] eb3b7703ad6c977bfd92b76da55d31e782a36b36 [INFO] testing sue71/leetcode against master#432e145bd5a974c5b6f4dd9b352891bd7502b69d for pr-87041 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsue71%2Fleetcode" "/workspace/builds/worker-2/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-2/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/sue71/leetcode on toolchain 432e145bd5a974c5b6f4dd9b352891bd7502b69d [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+432e145bd5a974c5b6f4dd9b352891bd7502b69d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] removed /workspace/builds/worker-2/source/.cargo/config [INFO] started tweaking git repo https://github.com/sue71/leetcode [INFO] finished tweaking git repo https://github.com/sue71/leetcode [INFO] tweaked toml for git repo https://github.com/sue71/leetcode written to /workspace/builds/worker-2/source/Cargo.toml [INFO] crate git repo https://github.com/sue71/leetcode already has a lockfile, it will not be regenerated [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+432e145bd5a974c5b6f4dd9b352891bd7502b69d" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+432e145bd5a974c5b6f4dd9b352891bd7502b69d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] fb1b1d9a187d00338e7e046414e113113d7c14ce4544df0f5f43d5eadfc54a94 [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" "fb1b1d9a187d00338e7e046414e113113d7c14ce4544df0f5f43d5eadfc54a94", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "fb1b1d9a187d00338e7e046414e113113d7c14ce4544df0f5f43d5eadfc54a94", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "fb1b1d9a187d00338e7e046414e113113d7c14ce4544df0f5f43d5eadfc54a94", kill_on_drop: false }` [INFO] [stdout] fb1b1d9a187d00338e7e046414e113113d7c14ce4544df0f5f43d5eadfc54a94 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+432e145bd5a974c5b6f4dd9b352891bd7502b69d" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] a37b14215d90f1b3e6ee71641f5e34d313447da69be3c0eb76373f5a138727ad [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" "a37b14215d90f1b3e6ee71641f5e34d313447da69be3c0eb76373f5a138727ad", kill_on_drop: false }` [INFO] [stderr] Compiling version_check v0.1.5 [INFO] [stderr] Compiling matches v0.1.8 [INFO] [stderr] Compiling proc-macro2 v0.4.30 [INFO] [stderr] Compiling unicode-xid v0.1.0 [INFO] [stderr] Compiling openssl-probe v0.1.2 [INFO] [stderr] Compiling percent-encoding v2.1.0 [INFO] [stderr] Compiling httparse v1.3.4 [INFO] [stderr] Compiling percent-encoding v1.0.1 [INFO] [stderr] Compiling crc32fast v1.2.0 [INFO] [stderr] Compiling try-lock v0.2.2 [INFO] [stderr] Compiling curl v0.4.25 [INFO] [stderr] Compiling adler32 v1.0.4 [INFO] [stderr] Compiling futures-io v0.3.4 [INFO] [stderr] Compiling futures-task v0.3.4 [INFO] [stderr] Compiling crossbeam-utils v0.6.6 [INFO] [stderr] Compiling libnghttp2-sys v0.1.2 [INFO] [stderr] Compiling libz-sys v1.0.25 [INFO] [stderr] Compiling curl-sys v0.4.25 [INFO] [stderr] Compiling try_from v0.3.2 [INFO] [stderr] Compiling futures-channel-preview v0.3.0-alpha.19 [INFO] [stderr] Compiling tokio-sync v0.1.6 [INFO] [stderr] Compiling log v0.4.8 [INFO] [stderr] Compiling proc-macro2 v1.0.5 [INFO] [stderr] Compiling unicode-bidi v0.3.4 [INFO] [stderr] Compiling miniz_oxide v0.3.3 [INFO] [stderr] Compiling arrayvec v0.4.11 [INFO] [stderr] Compiling tokio-executor v0.1.8 [INFO] [stderr] Compiling crossbeam-queue v0.1.2 [INFO] [stderr] Compiling crossbeam-channel v0.3.9 [INFO] [stderr] Compiling encoding_rs v0.8.20 [INFO] [stderr] Compiling iovec v0.1.3 [INFO] [stderr] Compiling net2 v0.2.33 [INFO] [stderr] Compiling socket2 v0.3.11 [INFO] [stderr] Compiling rand_os v0.1.3 [INFO] [stderr] Compiling parking_lot_core v0.6.2 [INFO] [stderr] Compiling memoffset v0.5.1 [INFO] [stderr] Compiling parking_lot v0.9.0 [INFO] [stderr] Compiling hyper v0.12.35 [INFO] [stderr] Compiling rand_pcg v0.1.2 [INFO] [stderr] Compiling rand_chacha v0.1.1 [INFO] [stderr] Compiling sluice v0.4.2 [INFO] [stderr] Compiling unicase v2.5.1 [INFO] [stderr] Compiling error-chain v0.12.1 [INFO] [stderr] Compiling want v0.2.0 [INFO] [stderr] Compiling tokio-timer v0.2.11 [INFO] [stderr] Compiling tokio-current-thread v0.1.6 [INFO] [stderr] Compiling idna v0.2.0 [INFO] [stderr] Compiling idna v0.1.5 [INFO] [stderr] Compiling bytes v0.4.12 [INFO] [stderr] Compiling mio v0.6.19 [INFO] [stderr] Compiling openssl v0.10.25 [INFO] [stderr] Compiling regex v1.3.4 [INFO] [stderr] Compiling backtrace v0.3.38 [INFO] [stderr] Compiling quote v1.0.2 [INFO] [stderr] Compiling rand v0.6.5 [INFO] [stderr] Compiling tokio-io v0.1.12 [INFO] [stderr] Compiling http v0.1.18 [INFO] [stderr] Compiling tokio-buf v0.1.1 [INFO] [stderr] Compiling string v0.2.1 [INFO] [stderr] Compiling flate2 v1.0.12 [INFO] [stderr] Compiling syn v1.0.5 [INFO] [stderr] Compiling url v2.1.0 [INFO] [stderr] Compiling url v1.7.2 [INFO] [stderr] Compiling quote v0.6.13 [INFO] [stderr] Compiling crossbeam-epoch v0.7.2 [INFO] [stderr] Compiling futures-util-preview v0.3.0-alpha.19 [INFO] [stderr] Compiling uuid v0.7.4 [INFO] [stderr] Compiling mime_guess v2.0.1 [INFO] [stderr] Compiling syn v0.15.44 [INFO] [stderr] Compiling crossbeam-deque v0.7.1 [INFO] [stderr] Compiling tokio-reactor v0.1.10 [INFO] [stderr] Compiling publicsuffix v1.5.3 [INFO] [stderr] Compiling cookie v0.12.0 [INFO] [stderr] Compiling tokio-threadpool v0.1.16 [INFO] [stderr] Compiling native-tls v0.2.3 [INFO] [stderr] Compiling tokio-tcp v0.1.3 [INFO] [stderr] Compiling tokio v0.1.22 [INFO] [stderr] Compiling http-body v0.1.0 [INFO] [stderr] Compiling h2 v0.1.26 [INFO] [stderr] Compiling futures-executor-preview v0.3.0-alpha.19 [INFO] [stderr] Compiling futures-preview v0.3.0-alpha.19 [INFO] [stderr] Compiling synstructure v0.10.2 [INFO] [stderr] Compiling serde_derive v1.0.101 [INFO] [stderr] Compiling proc-macro-hack v0.5.11 [INFO] [stderr] Compiling failure_derive v0.1.5 [INFO] [stderr] Compiling futures-macro v0.3.4 [INFO] [stderr] Compiling failure v0.1.5 [INFO] [stderr] Compiling hyper-tls v0.3.2 [INFO] [stderr] Compiling futures-util v0.3.4 [INFO] [stderr] Compiling isahc v0.7.6 [INFO] [stderr] Compiling futures-executor v0.3.4 [INFO] [stderr] Compiling serde v1.0.101 [INFO] [stderr] Compiling futures v0.3.4 [INFO] [stderr] Compiling serde_json v1.0.41 [INFO] [stderr] Compiling serde_urlencoded v0.6.1 [INFO] [stderr] Compiling serde_urlencoded v0.5.5 [INFO] [stderr] Compiling cookie_store v0.7.0 [INFO] [stderr] Compiling surf v1.0.3 [INFO] [stderr] Compiling reqwest v0.9.21 [INFO] [stderr] Compiling leetcode-rust v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused import: `to_list` [INFO] [stdout] --> src/solution/s0002_add_two_numbers.rs:32:32 [INFO] [stdout] | [INFO] [stdout] 32 | use crate::util::linked_list::{to_list, ListNode}; [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unnecessary parentheses around assigned value [INFO] [stdout] --> src/solution/s0002_add_two_numbers.rs:88:27 [INFO] [stdout] | [INFO] [stdout] 88 | let mut num = (a_val + b_val + if step_in { 1 } else { 0 }); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_parens)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `to_list` [INFO] [stdout] --> src/problem/p0002_add_two_numbers.rs:32:42 [INFO] [stdout] | [INFO] [stdout] 32 | use crate::util::linked_list::{ListNode, to_list}; [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unreachable expression [INFO] [stdout] --> src/solution/s0002_add_two_numbers.rs:94:9 [INFO] [stdout] | [INFO] [stdout] 64 | / loop { [INFO] [stdout] 65 | | let a_val = match a { [INFO] [stdout] 66 | | Some(node) => { [INFO] [stdout] 67 | | a = node.next; [INFO] [stdout] ... | [INFO] [stdout] 92 | | tail = &mut tail.as_mut().unwrap().next; [INFO] [stdout] 93 | | } [INFO] [stdout] | |_________- any code following this expression is unreachable [INFO] [stdout] 94 | head [INFO] [stdout] | ^^^^ unreachable expression [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unreachable_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `ci` [INFO] [stdout] --> src/solution/s0003_longest_substring_without_repeating_characters.rs:84:17 [INFO] [stdout] | [INFO] [stdout] 84 | let ci = &c[i]; [INFO] [stdout] | ^^ help: if this is intentional, prefix it with an underscore: `_ci` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `nums` [INFO] [stdout] --> src/problem/p0001_two_sum.rs:41:20 [INFO] [stdout] | [INFO] [stdout] 41 | pub fn two_sum(nums: Vec, target: i32) -> Vec { [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_nums` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `target` [INFO] [stdout] --> src/problem/p0001_two_sum.rs:41:36 [INFO] [stdout] | [INFO] [stdout] 41 | pub fn two_sum(nums: Vec, target: i32) -> Vec { [INFO] [stdout] | ^^^^^^ help: if this is intentional, prefix it with an underscore: `_target` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `l1` [INFO] [stdout] --> src/problem/p0002_add_two_numbers.rs:56:28 [INFO] [stdout] | [INFO] [stdout] 56 | pub fn add_two_numbers(l1: Option>, l2: Option>) -> Option> { [INFO] [stdout] | ^^ help: if this is intentional, prefix it with an underscore: `_l1` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `l2` [INFO] [stdout] --> src/problem/p0002_add_two_numbers.rs:56:55 [INFO] [stdout] | [INFO] [stdout] 56 | pub fn add_two_numbers(l1: Option>, l2: Option>) -> Option> { [INFO] [stdout] | ^^ help: if this is intentional, prefix it with an underscore: `_l2` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `s` [INFO] [stdout] --> src/problem/p0003_longest_substring_without_repeating_characters.rs:45:40 [INFO] [stdout] | [INFO] [stdout] 45 | pub fn length_of_longest_substring(s: String) -> i32 { [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_s` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct is never constructed: `Solution` [INFO] [stdout] --> src/solution/s0001_two_sum.rs:19:12 [INFO] [stdout] | [INFO] [stdout] 19 | pub struct Solution {} [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `two_sum` [INFO] [stdout] --> src/solution/s0001_two_sum.rs:28:12 [INFO] [stdout] | [INFO] [stdout] 28 | pub fn two_sum(nums: Vec, target: i32) -> Vec { [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct is never constructed: `Solution` [INFO] [stdout] --> src/solution/s0002_add_two_numbers.rs:31:12 [INFO] [stdout] | [INFO] [stdout] 31 | pub struct Solution {} [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `add_two_numbers` [INFO] [stdout] --> src/solution/s0002_add_two_numbers.rs:56:12 [INFO] [stdout] | [INFO] [stdout] 56 | pub fn add_two_numbers( [INFO] [stdout] | ^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct is never constructed: `Solution` [INFO] [stdout] --> src/solution/s0003_longest_substring_without_repeating_characters.rs:37:12 [INFO] [stdout] | [INFO] [stdout] 37 | pub struct Solution {} [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `length_of_longest_substring` [INFO] [stdout] --> src/solution/s0003_longest_substring_without_repeating_characters.rs:49:12 [INFO] [stdout] | [INFO] [stdout] 49 | pub fn length_of_longest_substring(s: String) -> i32 { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `length_of_longest_substring_map` [INFO] [stdout] --> src/solution/s0003_longest_substring_without_repeating_characters.rs:73:12 [INFO] [stdout] | [INFO] [stdout] 73 | pub fn length_of_longest_substring_map(s: String) -> i32 { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct is never constructed: `Solution` [INFO] [stdout] --> src/problem/p0001_two_sum.rs:33:12 [INFO] [stdout] | [INFO] [stdout] 33 | pub struct Solution {} [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `two_sum` [INFO] [stdout] --> src/problem/p0001_two_sum.rs:41:12 [INFO] [stdout] | [INFO] [stdout] 41 | pub fn two_sum(nums: Vec, target: i32) -> Vec { [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct is never constructed: `Solution` [INFO] [stdout] --> src/problem/p0002_add_two_numbers.rs:31:12 [INFO] [stdout] | [INFO] [stdout] 31 | pub struct Solution {} [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `add_two_numbers` [INFO] [stdout] --> src/problem/p0002_add_two_numbers.rs:56:12 [INFO] [stdout] | [INFO] [stdout] 56 | pub fn add_two_numbers(l1: Option>, l2: Option>) -> Option> { [INFO] [stdout] | ^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct is never constructed: `Solution` [INFO] [stdout] --> src/problem/p0003_longest_substring_without_repeating_characters.rs:37:12 [INFO] [stdout] | [INFO] [stdout] 37 | pub struct Solution {} [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `length_of_longest_substring` [INFO] [stdout] --> src/problem/p0003_longest_substring_without_repeating_characters.rs:45:12 [INFO] [stdout] | [INFO] [stdout] 45 | pub fn length_of_longest_substring(s: String) -> i32 { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 23 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `std::env` [INFO] [stdout] --> src/main.rs:10:5 [INFO] [stdout] | [INFO] [stdout] 10 | use std::env; [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the item `fs` is imported redundantly [INFO] [stdout] --> src/main.rs:152:9 [INFO] [stdout] | [INFO] [stdout] 11 | use std::fs; [INFO] [stdout] | ------- the item `fs` is already imported here [INFO] [stdout] ... [INFO] [stdout] 152 | use std::fs; [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `std::fs` [INFO] [stdout] --> src/main.rs:152:9 [INFO] [stdout] | [INFO] [stdout] 152 | use std::fs; [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `futures::stream::StreamExt` [INFO] [stdout] --> src/main.rs:20:5 [INFO] [stdout] | [INFO] [stdout] 20 | use futures::stream::StreamExt; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable `is_random` is assigned to, but never used [INFO] [stdout] --> src/main.rs:35:17 [INFO] [stdout] | [INFO] [stdout] 35 | let mut is_random = false; [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] = note: consider using `_is_random` instead [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable `is_solving` is assigned to, but never used [INFO] [stdout] --> src/main.rs:36:17 [INFO] [stdout] | [INFO] [stdout] 36 | let mut is_solving = false; [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: consider using `_is_solving` instead [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: value assigned to `id` is never read [INFO] [stdout] --> src/main.rs:37:17 [INFO] [stdout] | [INFO] [stdout] 37 | let mut id: u32 = 0; [INFO] [stdout] | ^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_assignments)]` on by default [INFO] [stdout] = help: maybe it is overwritten before being read? [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: value assigned to `is_random` is never read [INFO] [stdout] --> src/main.rs:51:13 [INFO] [stdout] | [INFO] [stdout] 51 | is_random = true; [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = help: maybe it is overwritten before being read? [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: value assigned to `is_solving` is never read [INFO] [stdout] --> src/main.rs:56:13 [INFO] [stdout] | [INFO] [stdout] 56 | is_solving = true; [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = help: maybe it is overwritten before being read? [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/main.rs:72:17 [INFO] [stdout] | [INFO] [stdout] 72 | let mut mod_file_addon = Arc::new(Mutex::new(vec![])); [INFO] [stdout] | ----^^^^^^^^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_mut)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/main.rs:116:13 [INFO] [stdout] | [INFO] [stdout] 116 | writeln!(lib_file, "{}", mod_file_addon.lock().unwrap().join("\n")); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_must_use)]` on by default [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] = note: this warning originates in the macro `writeln` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/main.rs:311:5 [INFO] [stdout] | [INFO] [stdout] 311 | fs::write(mod_file, lines.join("\n")); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/main.rs:317:5 [INFO] [stdout] | [INFO] [stdout] 317 | writeln!(lib_file, "mod {};", solution_name); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] = note: this warning originates in the macro `writeln` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/main.rs:360:9 [INFO] [stdout] | [INFO] [stdout] 360 | writeln!(lib_file, "mod {};", file_name); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] = note: this warning originates in the macro `writeln` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 14 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 1m 31s [INFO] running `Command { std: "docker" "inspect" "a37b14215d90f1b3e6ee71641f5e34d313447da69be3c0eb76373f5a138727ad", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "a37b14215d90f1b3e6ee71641f5e34d313447da69be3c0eb76373f5a138727ad", kill_on_drop: false }` [INFO] [stdout] a37b14215d90f1b3e6ee71641f5e34d313447da69be3c0eb76373f5a138727ad [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+432e145bd5a974c5b6f4dd9b352891bd7502b69d" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }` [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] [stdout] 84a5462cec07e61836c72170a3254e3425803fcfedd41348394edb099ef38a01 [INFO] running `Command { std: "docker" "start" "-a" "84a5462cec07e61836c72170a3254e3425803fcfedd41348394edb099ef38a01", kill_on_drop: false }` [INFO] [stderr] Compiling leetcode-rust v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused import: `to_list` [INFO] [stdout] --> src/solution/s0002_add_two_numbers.rs:32:32 [INFO] [stdout] | [INFO] [stdout] 32 | use crate::util::linked_list::{to_list, ListNode}; [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unnecessary parentheses around assigned value [INFO] [stdout] --> src/solution/s0002_add_two_numbers.rs:88:27 [INFO] [stdout] | [INFO] [stdout] 88 | let mut num = (a_val + b_val + if step_in { 1 } else { 0 }); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_parens)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `to_list` [INFO] [stdout] --> src/problem/p0002_add_two_numbers.rs:32:42 [INFO] [stdout] | [INFO] [stdout] 32 | use crate::util::linked_list::{ListNode, to_list}; [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unreachable expression [INFO] [stdout] --> src/solution/s0002_add_two_numbers.rs:94:9 [INFO] [stdout] | [INFO] [stdout] 64 | / loop { [INFO] [stdout] 65 | | let a_val = match a { [INFO] [stdout] 66 | | Some(node) => { [INFO] [stdout] 67 | | a = node.next; [INFO] [stdout] ... | [INFO] [stdout] 92 | | tail = &mut tail.as_mut().unwrap().next; [INFO] [stdout] 93 | | } [INFO] [stdout] | |_________- any code following this expression is unreachable [INFO] [stdout] 94 | head [INFO] [stdout] | ^^^^ unreachable expression [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unreachable_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `ci` [INFO] [stdout] --> src/solution/s0003_longest_substring_without_repeating_characters.rs:84:17 [INFO] [stdout] | [INFO] [stdout] 84 | let ci = &c[i]; [INFO] [stdout] | ^^ help: if this is intentional, prefix it with an underscore: `_ci` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `nums` [INFO] [stdout] --> src/problem/p0001_two_sum.rs:41:20 [INFO] [stdout] | [INFO] [stdout] 41 | pub fn two_sum(nums: Vec, target: i32) -> Vec { [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_nums` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `target` [INFO] [stdout] --> src/problem/p0001_two_sum.rs:41:36 [INFO] [stdout] | [INFO] [stdout] 41 | pub fn two_sum(nums: Vec, target: i32) -> Vec { [INFO] [stdout] | ^^^^^^ help: if this is intentional, prefix it with an underscore: `_target` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `l1` [INFO] [stdout] --> src/problem/p0002_add_two_numbers.rs:56:28 [INFO] [stdout] | [INFO] [stdout] 56 | pub fn add_two_numbers(l1: Option>, l2: Option>) -> Option> { [INFO] [stdout] | ^^ help: if this is intentional, prefix it with an underscore: `_l1` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `l2` [INFO] [stdout] --> src/problem/p0002_add_two_numbers.rs:56:55 [INFO] [stdout] | [INFO] [stdout] 56 | pub fn add_two_numbers(l1: Option>, l2: Option>) -> Option> { [INFO] [stdout] | ^^ help: if this is intentional, prefix it with an underscore: `_l2` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `s` [INFO] [stdout] --> src/problem/p0003_longest_substring_without_repeating_characters.rs:45:40 [INFO] [stdout] | [INFO] [stdout] 45 | pub fn length_of_longest_substring(s: String) -> i32 { [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_s` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct is never constructed: `Solution` [INFO] [stdout] --> src/solution/s0001_two_sum.rs:19:12 [INFO] [stdout] | [INFO] [stdout] 19 | pub struct Solution {} [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `two_sum` [INFO] [stdout] --> src/solution/s0001_two_sum.rs:28:12 [INFO] [stdout] | [INFO] [stdout] 28 | pub fn two_sum(nums: Vec, target: i32) -> Vec { [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct is never constructed: `Solution` [INFO] [stdout] --> src/solution/s0002_add_two_numbers.rs:31:12 [INFO] [stdout] | [INFO] [stdout] 31 | pub struct Solution {} [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `add_two_numbers` [INFO] [stdout] --> src/solution/s0002_add_two_numbers.rs:56:12 [INFO] [stdout] | [INFO] [stdout] 56 | pub fn add_two_numbers( [INFO] [stdout] | ^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct is never constructed: `Solution` [INFO] [stdout] --> src/solution/s0003_longest_substring_without_repeating_characters.rs:37:12 [INFO] [stdout] | [INFO] [stdout] 37 | pub struct Solution {} [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `length_of_longest_substring` [INFO] [stdout] --> src/solution/s0003_longest_substring_without_repeating_characters.rs:49:12 [INFO] [stdout] | [INFO] [stdout] 49 | pub fn length_of_longest_substring(s: String) -> i32 { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `length_of_longest_substring_map` [INFO] [stdout] --> src/solution/s0003_longest_substring_without_repeating_characters.rs:73:12 [INFO] [stdout] | [INFO] [stdout] 73 | pub fn length_of_longest_substring_map(s: String) -> i32 { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct is never constructed: `Solution` [INFO] [stdout] --> src/problem/p0001_two_sum.rs:33:12 [INFO] [stdout] | [INFO] [stdout] 33 | pub struct Solution {} [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `two_sum` [INFO] [stdout] --> src/problem/p0001_two_sum.rs:41:12 [INFO] [stdout] | [INFO] [stdout] 41 | pub fn two_sum(nums: Vec, target: i32) -> Vec { [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct is never constructed: `Solution` [INFO] [stdout] --> src/problem/p0002_add_two_numbers.rs:31:12 [INFO] [stdout] | [INFO] [stdout] 31 | pub struct Solution {} [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `add_two_numbers` [INFO] [stdout] --> src/problem/p0002_add_two_numbers.rs:56:12 [INFO] [stdout] | [INFO] [stdout] 56 | pub fn add_two_numbers(l1: Option>, l2: Option>) -> Option> { [INFO] [stdout] | ^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct is never constructed: `Solution` [INFO] [stdout] --> src/problem/p0003_longest_substring_without_repeating_characters.rs:37:12 [INFO] [stdout] | [INFO] [stdout] 37 | pub struct Solution {} [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `length_of_longest_substring` [INFO] [stdout] --> src/problem/p0003_longest_substring_without_repeating_characters.rs:45:12 [INFO] [stdout] | [INFO] [stdout] 45 | pub fn length_of_longest_substring(s: String) -> i32 { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 23 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unnecessary parentheses around assigned value [INFO] [stdout] --> src/solution/s0002_add_two_numbers.rs:88:27 [INFO] [stdout] | [INFO] [stdout] 88 | let mut num = (a_val + b_val + if step_in { 1 } else { 0 }); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_parens)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `super::*` [INFO] [stdout] --> src/problem/p0001_two_sum.rs:50:9 [INFO] [stdout] | [INFO] [stdout] 50 | use super::*; [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `to_list` [INFO] [stdout] --> src/problem/p0002_add_two_numbers.rs:32:42 [INFO] [stdout] | [INFO] [stdout] 32 | use crate::util::linked_list::{ListNode, to_list}; [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `super::*` [INFO] [stdout] --> src/problem/p0002_add_two_numbers.rs:65:9 [INFO] [stdout] | [INFO] [stdout] 65 | use super::*; [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `super::*` [INFO] [stdout] --> src/problem/p0003_longest_substring_without_repeating_characters.rs:54:9 [INFO] [stdout] | [INFO] [stdout] 54 | use super::*; [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unreachable expression [INFO] [stdout] --> src/solution/s0002_add_two_numbers.rs:94:9 [INFO] [stdout] | [INFO] [stdout] 64 | / loop { [INFO] [stdout] 65 | | let a_val = match a { [INFO] [stdout] 66 | | Some(node) => { [INFO] [stdout] 67 | | a = node.next; [INFO] [stdout] ... | [INFO] [stdout] 92 | | tail = &mut tail.as_mut().unwrap().next; [INFO] [stdout] 93 | | } [INFO] [stdout] | |_________- any code following this expression is unreachable [INFO] [stdout] 94 | head [INFO] [stdout] | ^^^^ unreachable expression [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unreachable_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `ci` [INFO] [stdout] --> src/solution/s0003_longest_substring_without_repeating_characters.rs:84:17 [INFO] [stdout] | [INFO] [stdout] 84 | let ci = &c[i]; [INFO] [stdout] | ^^ help: if this is intentional, prefix it with an underscore: `_ci` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `nums` [INFO] [stdout] --> src/problem/p0001_two_sum.rs:41:20 [INFO] [stdout] | [INFO] [stdout] 41 | pub fn two_sum(nums: Vec, target: i32) -> Vec { [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_nums` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `target` [INFO] [stdout] --> src/problem/p0001_two_sum.rs:41:36 [INFO] [stdout] | [INFO] [stdout] 41 | pub fn two_sum(nums: Vec, target: i32) -> Vec { [INFO] [stdout] | ^^^^^^ help: if this is intentional, prefix it with an underscore: `_target` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `l1` [INFO] [stdout] --> src/problem/p0002_add_two_numbers.rs:56:28 [INFO] [stdout] | [INFO] [stdout] 56 | pub fn add_two_numbers(l1: Option>, l2: Option>) -> Option> { [INFO] [stdout] | ^^ help: if this is intentional, prefix it with an underscore: `_l1` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `l2` [INFO] [stdout] --> src/problem/p0002_add_two_numbers.rs:56:55 [INFO] [stdout] | [INFO] [stdout] 56 | pub fn add_two_numbers(l1: Option>, l2: Option>) -> Option> { [INFO] [stdout] | ^^ help: if this is intentional, prefix it with an underscore: `_l2` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `s` [INFO] [stdout] --> src/problem/p0003_longest_substring_without_repeating_characters.rs:45:40 [INFO] [stdout] | [INFO] [stdout] 45 | pub fn length_of_longest_substring(s: String) -> i32 { [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_s` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct is never constructed: `Solution` [INFO] [stdout] --> src/problem/p0001_two_sum.rs:33:12 [INFO] [stdout] | [INFO] [stdout] 33 | pub struct Solution {} [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `two_sum` [INFO] [stdout] --> src/problem/p0001_two_sum.rs:41:12 [INFO] [stdout] | [INFO] [stdout] 41 | pub fn two_sum(nums: Vec, target: i32) -> Vec { [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct is never constructed: `Solution` [INFO] [stdout] --> src/problem/p0002_add_two_numbers.rs:31:12 [INFO] [stdout] | [INFO] [stdout] 31 | pub struct Solution {} [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `add_two_numbers` [INFO] [stdout] --> src/problem/p0002_add_two_numbers.rs:56:12 [INFO] [stdout] | [INFO] [stdout] 56 | pub fn add_two_numbers(l1: Option>, l2: Option>) -> Option> { [INFO] [stdout] | ^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct is never constructed: `Solution` [INFO] [stdout] --> src/problem/p0003_longest_substring_without_repeating_characters.rs:37:12 [INFO] [stdout] | [INFO] [stdout] 37 | pub struct Solution {} [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `length_of_longest_substring` [INFO] [stdout] --> src/problem/p0003_longest_substring_without_repeating_characters.rs:45:12 [INFO] [stdout] | [INFO] [stdout] 45 | pub fn length_of_longest_substring(s: String) -> i32 { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `std::env` [INFO] [stdout] --> src/main.rs:10:5 [INFO] [stdout] | [INFO] [stdout] 10 | use std::env; [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the item `fs` is imported redundantly [INFO] [stdout] --> src/main.rs:152:9 [INFO] [stdout] | [INFO] [stdout] 11 | use std::fs; [INFO] [stdout] | ------- the item `fs` is already imported here [INFO] [stdout] ... [INFO] [stdout] 152 | use std::fs; [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `std::fs` [INFO] [stdout] --> src/main.rs:152:9 [INFO] [stdout] | [INFO] [stdout] 152 | use std::fs; [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 18 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `futures::stream::StreamExt` [INFO] [stdout] --> src/main.rs:20:5 [INFO] [stdout] | [INFO] [stdout] 20 | use futures::stream::StreamExt; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable `is_random` is assigned to, but never used [INFO] [stdout] --> src/main.rs:35:17 [INFO] [stdout] | [INFO] [stdout] 35 | let mut is_random = false; [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] = note: consider using `_is_random` instead [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable `is_solving` is assigned to, but never used [INFO] [stdout] --> src/main.rs:36:17 [INFO] [stdout] | [INFO] [stdout] 36 | let mut is_solving = false; [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: consider using `_is_solving` instead [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: value assigned to `id` is never read [INFO] [stdout] --> src/main.rs:37:17 [INFO] [stdout] | [INFO] [stdout] 37 | let mut id: u32 = 0; [INFO] [stdout] | ^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_assignments)]` on by default [INFO] [stdout] = help: maybe it is overwritten before being read? [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: value assigned to `is_random` is never read [INFO] [stdout] --> src/main.rs:51:13 [INFO] [stdout] | [INFO] [stdout] 51 | is_random = true; [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = help: maybe it is overwritten before being read? [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: value assigned to `is_solving` is never read [INFO] [stdout] --> src/main.rs:56:13 [INFO] [stdout] | [INFO] [stdout] 56 | is_solving = true; [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = help: maybe it is overwritten before being read? [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/main.rs:72:17 [INFO] [stdout] | [INFO] [stdout] 72 | let mut mod_file_addon = Arc::new(Mutex::new(vec![])); [INFO] [stdout] | ----^^^^^^^^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_mut)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/main.rs:116:13 [INFO] [stdout] | [INFO] [stdout] 116 | writeln!(lib_file, "{}", mod_file_addon.lock().unwrap().join("\n")); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_must_use)]` on by default [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] = note: this warning originates in the macro `writeln` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/main.rs:311:5 [INFO] [stdout] | [INFO] [stdout] 311 | fs::write(mod_file, lines.join("\n")); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/main.rs:317:5 [INFO] [stdout] | [INFO] [stdout] 317 | writeln!(lib_file, "mod {};", solution_name); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] = note: this warning originates in the macro `writeln` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/main.rs:360:9 [INFO] [stdout] | [INFO] [stdout] 360 | writeln!(lib_file, "mod {};", file_name); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] = note: this warning originates in the macro `writeln` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 14 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished test [unoptimized + debuginfo] target(s) in 2.56s [INFO] running `Command { std: "docker" "inspect" "84a5462cec07e61836c72170a3254e3425803fcfedd41348394edb099ef38a01", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "84a5462cec07e61836c72170a3254e3425803fcfedd41348394edb099ef38a01", kill_on_drop: false }` [INFO] [stdout] 84a5462cec07e61836c72170a3254e3425803fcfedd41348394edb099ef38a01 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+432e145bd5a974c5b6f4dd9b352891bd7502b69d" "test" "--frozen", kill_on_drop: false }` [INFO] [stdout] 9a8e784446ef464f254dd9893186828be2808ed0e5fde4a7c352ebc42803d19f [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" "9a8e784446ef464f254dd9893186828be2808ed0e5fde4a7c352ebc42803d19f", kill_on_drop: false }` [INFO] [stdout] [INFO] [stderr] warning: unused import: `to_list` [INFO] [stdout] running 6 tests [INFO] [stderr] --> src/solution/s0002_add_two_numbers.rs:32:32 [INFO] [stdout] test problem::p0003_longest_substring_without_repeating_characters::tests::test_3 ... ok [INFO] [stderr] | [INFO] [stdout] test problem::p0002_add_two_numbers::tests::test_2 ... ok [INFO] [stderr] 32 | use crate::util::linked_list::{to_list, ListNode}; [INFO] [stderr] | ^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_imports)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unnecessary parentheses around assigned value [INFO] [stderr] --> src/solution/s0002_add_two_numbers.rs:88:27 [INFO] [stderr] | [INFO] [stderr] 88 | let mut num = (a_val + b_val + if step_in { 1 } else { 0 }); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_parens)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused import: `to_list` [INFO] [stderr] --> src/problem/p0002_add_two_numbers.rs:32:42 [INFO] [stderr] | [INFO] [stderr] 32 | use crate::util::linked_list::{ListNode, to_list}; [INFO] [stderr] | ^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unreachable expression [INFO] [stderr] --> src/solution/s0002_add_two_numbers.rs:94:9 [INFO] [stderr] | [INFO] [stderr] 64 | / loop { [INFO] [stderr] 65 | | let a_val = match a { [INFO] [stderr] 66 | | Some(node) => { [INFO] [stderr] 67 | | a = node.next; [INFO] [stderr] ... | [INFO] [stderr] 92 | | tail = &mut tail.as_mut().unwrap().next; [INFO] [stderr] 93 | | } [INFO] [stderr] | |_________- any code following this expression is unreachable [INFO] [stderr] 94 | head [INFO] [stderr] | ^^^^ unreachable expression [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unreachable_code)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused variable: `ci` [INFO] [stderr] --> src/solution/s0003_longest_substring_without_repeating_characters.rs:84:17 [INFO] [stderr] | [INFO] [stderr] 84 | let ci = &c[i]; [INFO] [stderr] | ^^ help: if this is intentional, prefix it with an underscore: `_ci` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_variables)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused variable: `nums` [INFO] [stderr] --> src/problem/p0001_two_sum.rs:41:20 [INFO] [stderr] | [INFO] [stderr] 41 | pub fn two_sum(nums: Vec, target: i32) -> Vec { [INFO] [stderr] | ^^^^ help: if this is intentional, prefix it with an underscore: `_nums` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `target` [INFO] [stderr] --> src/problem/p0001_two_sum.rs:41:36 [INFO] [stderr] | [INFO] [stderr] 41 | pub fn two_sum(nums: Vec, target: i32) -> Vec { [INFO] [stderr] | ^^^^^^ help: if this is intentional, prefix it with an underscore: `_target` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `l1` [INFO] [stderr] --> src/problem/p0002_add_two_numbers.rs:56:28 [INFO] [stderr] | [INFO] [stderr] 56 | pub fn add_two_numbers(l1: Option>, l2: Option>) -> Option> { [INFO] [stderr] | ^^ help: if this is intentional, prefix it with an underscore: `_l1` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `l2` [INFO] [stderr] --> src/problem/p0002_add_two_numbers.rs:56:55 [INFO] [stderr] | [INFO] [stderr] 56 | pub fn add_two_numbers(l1: Option>, l2: Option>) -> Option> { [INFO] [stderr] | ^^ help: if this is intentional, prefix it with an underscore: `_l2` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `s` [INFO] [stderr] --> src/problem/p0003_longest_substring_without_repeating_characters.rs:45:40 [INFO] [stderr] | [INFO] [stderr] 45 | pub fn length_of_longest_substring(s: String) -> i32 { [INFO] [stderr] | ^ help: if this is intentional, prefix it with an underscore: `_s` [INFO] [stderr] [INFO] [stderr] warning: struct is never constructed: `Solution` [INFO] [stderr] --> src/solution/s0001_two_sum.rs:19:12 [INFO] [stderr] | [INFO] [stderr] 19 | pub struct Solution {} [INFO] [stderr] | ^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(dead_code)]` on by default [INFO] [stderr] [INFO] [stderr] warning: associated function is never used: `two_sum` [INFO] [stderr] --> src/solution/s0001_two_sum.rs:28:12 [INFO] [stderr] | [INFO] [stderr] 28 | pub fn two_sum(nums: Vec, target: i32) -> Vec { [INFO] [stderr] | ^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: struct is never constructed: `Solution` [INFO] [stderr] --> src/solution/s0002_add_two_numbers.rs:31:12 [INFO] [stderr] | [INFO] [stderr] 31 | pub struct Solution {} [INFO] [stderr] | ^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: associated function is never used: `add_two_numbers` [INFO] [stderr] --> src/solution/s0002_add_two_numbers.rs:56:12 [INFO] [stderr] | [INFO] [stderr] 56 | pub fn add_two_numbers( [INFO] [stderr] | ^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: struct is never constructed: `Solution` [INFO] [stderr] --> src/solution/s0003_longest_substring_without_repeating_characters.rs:37:12 [INFO] [stderr] | [INFO] [stderr] 37 | pub struct Solution {} [INFO] [stderr] | ^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: associated function is never used: `length_of_longest_substring` [INFO] [stderr] --> src/solution/s0003_longest_substring_without_repeating_characters.rs:49:12 [INFO] [stderr] | [INFO] [stderr] 49 | pub fn length_of_longest_substring(s: String) -> i32 { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: associated function is never used: `length_of_longest_substring_map` [INFO] [stderr] --> src/solution/s0003_longest_substring_without_repeating_characters.rs:73:12 [INFO] [stderr] | [INFO] [stderr] 73 | pub fn length_of_longest_substring_map(s: String) -> i32 { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: struct is never constructed: `Solution` [INFO] [stderr] --> src/problem/p0001_two_sum.rs:33:12 [INFO] [stderr] | [INFO] [stderr] 33 | pub struct Solution {} [INFO] [stderr] | ^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: associated function is never used: `two_sum` [INFO] [stderr] --> src/problem/p0001_two_sum.rs:41:12 [INFO] [stderr] | [INFO] [stderr] 41 | pub fn two_sum(nums: Vec, target: i32) -> Vec { [INFO] [stderr] | ^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: struct is never constructed: `Solution` [INFO] [stderr] --> src/problem/p0002_add_two_numbers.rs:31:12 [INFO] [stderr] | [INFO] [stderr] 31 | pub struct Solution {} [INFO] [stderr] | ^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: associated function is never used: `add_two_numbers` [INFO] [stderr] --> src/problem/p0002_add_two_numbers.rs:56:12 [INFO] [stderr] | [INFO] [stderr] 56 | pub fn add_two_numbers(l1: Option>, l2: Option>) -> Option> { [INFO] [stderr] | ^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: struct is never constructed: `Solution` [INFO] [stderr] --> src/problem/p0003_longest_substring_without_repeating_characters.rs:37:12 [INFO] [stderr] | [INFO] [stderr] 37 | pub struct Solution {} [INFO] [stderr] | ^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: associated function is never used: `length_of_longest_substring` [INFO] [stderr] --> src/problem/p0003_longest_substring_without_repeating_characters.rs:45:12 [INFO] [stderr] | [INFO] [stderr] 45 | pub fn length_of_longest_substring(s: String) -> i32 { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: 23 warnings emitted [INFO] [stderr] [INFO] [stderr] warning: unnecessary parentheses around assigned value [INFO] [stderr] --> src/solution/s0002_add_two_numbers.rs:88:27 [INFO] [stderr] | [INFO] [stderr] 88 | let mut num = (a_val + b_val + if step_in { 1 } else { 0 }); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_parens)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused import: `super::*` [INFO] [stderr] --> src/problem/p0001_two_sum.rs:50:9 [INFO] [stderr] | [INFO] [stderr] 50 | use super::*; [INFO] [stderr] | ^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_imports)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused import: `to_list` [INFO] [stderr] --> src/problem/p0002_add_two_numbers.rs:32:42 [INFO] [stderr] | [INFO] [stderr] 32 | use crate::util::linked_list::{ListNode, to_list}; [INFO] [stderr] | ^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused import: `super::*` [INFO] [stderr] --> src/problem/p0002_add_two_numbers.rs:65:9 [INFO] [stderr] | [INFO] [stderr] 65 | use super::*; [INFO] [stderr] | ^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused import: `super::*` [INFO] [stderr] --> src/problem/p0003_longest_substring_without_repeating_characters.rs:54:9 [INFO] [stderr] | [INFO] [stderr] 54 | use super::*; [INFO] [stderr] | ^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unreachable expression [INFO] [stderr] --> src/solution/s0002_add_two_numbers.rs:94:9 [INFO] [stderr] | [INFO] [stderr] 64 | / loop { [INFO] [stderr] 65 | | let a_val = match a { [INFO] [stderr] 66 | | Some(node) => { [INFO] [stderr] 67 | | a = node.next; [INFO] [stderr] ... | [INFO] [stderr] 92 | | tail = &mut tail.as_mut().unwrap().next; [INFO] [stderr] 93 | | } [INFO] [stderr] | |_________- any code following this expression is unreachable [INFO] [stderr] 94 | head [INFO] [stderr] | ^^^^ unreachable expression [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unreachable_code)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused variable: `ci` [INFO] [stderr] --> src/solution/s0003_longest_substring_without_repeating_characters.rs:84:17 [INFO] [stderr] | [INFO] [stderr] 84 | let ci = &c[i]; [INFO] [stderr] | ^^ help: if this is intentional, prefix it with an underscore: `_ci` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_variables)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused variable: `nums` [INFO] [stderr] --> src/problem/p0001_two_sum.rs:41:20 [INFO] [stderr] | [INFO] [stderr] 41 | pub fn two_sum(nums: Vec, target: i32) -> Vec { [INFO] [stderr] | ^^^^ help: if this is intentional, prefix it with an underscore: `_nums` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `target` [INFO] [stderr] --> src/problem/p0001_two_sum.rs:41:36 [INFO] [stderr] | [INFO] [stderr] 41 | pub fn two_sum(nums: Vec, target: i32) -> Vec { [INFO] [stderr] | ^^^^^^ help: if this is intentional, prefix it with an underscore: `_target` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `l1` [INFO] [stderr] --> src/problem/p0002_add_two_numbers.rs:56:28 [INFO] [stderr] | [INFO] [stderr] 56 | pub fn add_two_numbers(l1: Option>, l2: Option>) -> Option> { [INFO] [stderr] | ^^ help: if this is intentional, prefix it with an underscore: `_l1` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `l2` [INFO] [stderr] --> src/problem/p0002_add_two_numbers.rs:56:55 [INFO] [stderr] | [INFO] [stderr] 56 | pub fn add_two_numbers(l1: Option>, l2: Option>) -> Option> { [INFO] [stderr] | ^^ help: if this is intentional, prefix it with an underscore: `_l2` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `s` [INFO] [stderr] --> src/problem/p0003_longest_substring_without_repeating_characters.rs:45:40 [INFO] [stderr] | [INFO] [stderr] 45 | pub fn length_of_longest_substring(s: String) -> i32 { [INFO] [stderr] | ^ help: if this is intentional, prefix it with an underscore: `_s` [INFO] [stderr] [INFO] [stderr] warning: struct is never constructed: `Solution` [INFO] [stderr] --> src/problem/p0001_two_sum.rs:33:12 [INFO] [stderr] | [INFO] [stderr] 33 | pub struct Solution {} [INFO] [stderr] | ^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(dead_code)]` on by default [INFO] [stderr] [INFO] [stderr] warning: associated function is never used: `two_sum` [INFO] [stderr] --> src/problem/p0001_two_sum.rs:41:12 [INFO] [stderr] | [INFO] [stderr] 41 | pub fn two_sum(nums: Vec, target: i32) -> Vec { [INFO] [stderr] | ^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: struct is never constructed: `Solution` [INFO] [stderr] --> src/problem/p0002_add_two_numbers.rs:31:12 [INFO] [stderr] | [INFO] [stderr] 31 | pub struct Solution {} [INFO] [stderr] | ^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: associated function is never used: `add_two_numbers` [INFO] [stderr] --> src/problem/p0002_add_two_numbers.rs:56:12 [INFO] [stderr] | [INFO] [stderr] 56 | pub fn add_two_numbers(l1: Option>, l2: Option>) -> Option> { [INFO] [stderr] | ^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: struct is never constructed: `Solution` [INFO] [stderr] --> src/problem/p0003_longest_substring_without_repeating_characters.rs:37:12 [INFO] [stderr] | [INFO] [stderr] 37 | pub struct Solution {} [INFO] [stderr] | ^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: associated function is never used: `length_of_longest_substring` [INFO] [stderr] --> src/problem/p0003_longest_substring_without_repeating_characters.rs:45:12 [INFO] [stderr] | [INFO] [stderr] 45 | pub fn length_of_longest_substring(s: String) -> i32 { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: 18 warnings emitted [INFO] [stderr] [INFO] [stderr] warning: unused import: `std::env` [INFO] [stderr] --> src/main.rs:10:5 [INFO] [stderr] | [INFO] [stderr] 10 | use std::env; [INFO] [stderr] | ^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_imports)]` on by default [INFO] [stderr] [INFO] [stderr] warning: the item `fs` is imported redundantly [INFO] [stderr] --> src/main.rs:152:9 [INFO] [stderr] | [INFO] [stderr] 11 | use std::fs; [INFO] [stderr] | ------- the item `fs` is already imported here [INFO] [stderr] ... [INFO] [stderr] 152 | use std::fs; [INFO] [stderr] | ^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused import: `std::fs` [INFO] [stderr] --> src/main.rs:152:9 [INFO] [stderr] | [INFO] [stderr] 152 | use std::fs; [INFO] [stderr] | ^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused import: `futures::stream::StreamExt` [INFO] [stderr] --> src/main.rs:20:5 [INFO] [stderr] | [INFO] [stderr] 20 | use futures::stream::StreamExt; [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: variable `is_random` is assigned to, but never used [INFO] [stderr] --> src/main.rs:35:17 [INFO] [stderr] | [INFO] [stderr] 35 | let mut is_random = false; [INFO] [stderr] | ^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_variables)]` on by default [INFO] [stderr] = note: consider using `_is_random` instead [INFO] [stderr] [INFO] [stderr] warning: variable `is_solving` is assigned to, but never used [INFO] [stderr] --> src/main.rs:36:17 [INFO] [stderr] | [INFO] [stderr] 36 | let mut is_solving = false; [INFO] [stderr] | ^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: consider using `_is_solving` instead [INFO] [stderr] [INFO] [stderr] warning: value assigned to `id` is never read [INFO] [stderr] --> src/main.rs:37:17 [INFO] [stderr] | [INFO] [stderr] 37 | let mut id: u32 = 0; [INFO] [stderr] | ^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_assignments)]` on by default [INFO] [stderr] = help: maybe it is overwritten before being read? [INFO] [stderr] [INFO] [stderr] warning: value assigned to `is_random` is never read [INFO] [stderr] --> src/main.rs:51:13 [INFO] [stderr] | [INFO] [stderr] 51 | is_random = true; [INFO] [stderr] | ^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = help: maybe it is overwritten before being read? [INFO] [stderr] [INFO] [stderr] warning: value assigned to `is_solving` is never read [INFO] [stderr] --> src/main.rs:56:13 [INFO] [stderr] | [INFO] [stderr] 56 | is_solving = true; [INFO] [stderr] | ^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = help: maybe it is overwritten before being read? [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/main.rs:72:17 [INFO] [stderr] | [INFO] [stderr] 72 | let mut mod_file_addon = Arc::new(Mutex::new(vec![])); [INFO] [stderr] | ----^^^^^^^^^^^^^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_mut)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused `Result` that must be used [INFO] [stderr] --> src/main.rs:116:13 [INFO] [stderr] | [INFO] [stderr] 116 | writeln!(lib_file, "{}", mod_file_addon.lock().unwrap().join("\n")); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_must_use)]` on by default [INFO] [stderr] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stderr] = note: this warning originates in the macro `writeln` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stderr] [INFO] [stderr] warning: unused `Result` that must be used [INFO] [stderr] --> src/main.rs:311:5 [INFO] [stderr] | [INFO] [stderr] 311 | fs::write(mod_file, lines.join("\n")); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stderr] [INFO] [stderr] warning: unused `Result` that must be used [INFO] [stderr] --> src/main.rs:317:5 [INFO] [stderr] | [INFO] [stderr] 317 | writeln!(lib_file, "mod {};", solution_name); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stderr] = note: this warning originates in the macro `writeln` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stderr] [INFO] [stderr] warning: unused `Result` that must be used [INFO] [stderr] --> src/main.rs:360:9 [INFO] [stderr] | [INFO] [stderr] 360 | writeln!(lib_file, "mod {};", file_name); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stderr] = note: this warning originates in the macro `writeln` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stderr] [INFO] [stderr] warning: 14 warnings emitted [INFO] [stderr] [INFO] [stderr] Finished test [unoptimized + debuginfo] target(s) in 0.17s [INFO] [stderr] Running unittests (/opt/rustwide/target/debug/deps/leetcode_rust-44e0782188bd197b) [INFO] [stdout] test problem::p0001_two_sum::tests::test_1 ... ok [INFO] [stdout] test solution::s0001_two_sum::tests::test_1 ... ok [INFO] [stdout] test solution::s0003_longest_substring_without_repeating_characters::tests::test_3 ... ok [INFO] [stderr] Running unittests (/opt/rustwide/target/debug/deps/leetcode_rust-d3df6a9f461a00e5) [INFO] [stdout] test solution::s0002_add_two_numbers::tests::test_2 ... ok [INFO] [stdout] [INFO] [stdout] test result: ok. 6 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s [INFO] [stdout] [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" "9a8e784446ef464f254dd9893186828be2808ed0e5fde4a7c352ebc42803d19f", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "9a8e784446ef464f254dd9893186828be2808ed0e5fde4a7c352ebc42803d19f", kill_on_drop: false }` [INFO] [stdout] 9a8e784446ef464f254dd9893186828be2808ed0e5fde4a7c352ebc42803d19f