[INFO] cloning repository https://github.com/Mimikkk/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/Mimikkk/leetcode-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMimikkk%2Fleetcode-rust", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMimikkk%2Fleetcode-rust'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 2941394326e374a5f041780cfd6769cc43e33a34 [INFO] checking Mimikkk/leetcode-rust against try#93086cfebfccb79083c59d0d3b2052944bba643c for pr-146440-1 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMimikkk%2Fleetcode-rust" "/workspace/builds/worker-7-tc2/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc2/source'... [INFO] [stderr] done. [INFO] started tweaking git repo https://github.com/Mimikkk/leetcode-rust [INFO] finished tweaking git repo https://github.com/Mimikkk/leetcode-rust [INFO] tweaked toml for git repo https://github.com/Mimikkk/leetcode-rust written to /workspace/builds/worker-7-tc2/source/Cargo.toml [INFO] validating manifest of git repo https://github.com/Mimikkk/leetcode-rust on toolchain 93086cfebfccb79083c59d0d3b2052944bba643c [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+93086cfebfccb79083c59d0d3b2052944bba643c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] crate git repo https://github.com/Mimikkk/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" "+93086cfebfccb79083c59d0d3b2052944bba643c" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+93086cfebfccb79083c59d0d3b2052944bba643c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 0e8d84328db8d60b44e6defa877b734ca43a76d683b179c226bcec91070dc770 [INFO] running `Command { std: "docker" "start" "-a" "0e8d84328db8d60b44e6defa877b734ca43a76d683b179c226bcec91070dc770", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "0e8d84328db8d60b44e6defa877b734ca43a76d683b179c226bcec91070dc770", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "0e8d84328db8d60b44e6defa877b734ca43a76d683b179c226bcec91070dc770", kill_on_drop: false }` [INFO] [stdout] 0e8d84328db8d60b44e6defa877b734ca43a76d683b179c226bcec91070dc770 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+93086cfebfccb79083c59d0d3b2052944bba643c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 75f0cb282c2d3b5405e40da41037b2eed24d9df345a3865474e2168390c3f2c8 [INFO] running `Command { std: "docker" "start" "-a" "75f0cb282c2d3b5405e40da41037b2eed24d9df345a3865474e2168390c3f2c8", kill_on_drop: false }` [INFO] [stderr] Compiling libc v0.2.86 [INFO] [stderr] Compiling getrandom v0.2.2 [INFO] [stderr] Checking ppv-lite86 v0.2.10 [INFO] [stderr] Checking either v1.6.1 [INFO] [stderr] Checking rand_core v0.6.2 [INFO] [stderr] Checking rand_chacha v0.3.0 [INFO] [stderr] Checking rand v0.8.3 [INFO] [stderr] Checking leetcode v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/algorithms.rs:638:23 [INFO] [stdout] | [INFO] [stdout] 638 | pub fn find_duplicate(mut nums: Vec) -> i32 { [INFO] [stdout] | ----^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `i` [INFO] [stdout] --> src/algorithms.rs:719:10 [INFO] [stdout] | [INFO] [stdout] 719 | for (i, size) in chunk_sizes.into_iter().enumerate() {} [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_i` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `size` [INFO] [stdout] --> src/algorithms.rs:719:13 [INFO] [stdout] | [INFO] [stdout] 719 | for (i, size) in chunk_sizes.into_iter().enumerate() {} [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_size` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/algorithms.rs:791:45 [INFO] [stdout] | [INFO] [stdout] 791 | current_chars.into_iter().fold(0, |acc, mut c| acc + c.is_none() as i32) [INFO] [stdout] | ----^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/algorithms.rs:778:46 [INFO] [stdout] | [INFO] [stdout] 778 | pub fn num_matching_subseq(sequence: String, mut subsequences: Vec) -> i32 { [INFO] [stdout] | ----^^^^^^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/algorithms/part2.rs:35:24 [INFO] [stdout] | [INFO] [stdout] 35 | pub fn number_of_steps(mut num: i32) -> i32 { [INFO] [stdout] | ----^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: value assigned to `val` is never read [INFO] [stdout] --> src/ghost/firstbatch.rs:46:10 [INFO] [stdout] | [INFO] [stdout] 46 | let (mut val, mut carry) = (0, false); [INFO] [stdout] | ^^^^^^^ this value is reassigned later and never used [INFO] [stdout] ... [INFO] [stdout] 51 | val = carry as i32; [INFO] [stdout] | ------------------ `val` is overwritten here before the previous value is read [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: value assigned to `current` is never read [INFO] [stdout] --> src/ghost/firstbatch.rs:122:36 [INFO] [stdout] | [INFO] [stdout] 122 | let (mut result, mut previous, mut current) = (0, 0, 0); [INFO] [stdout] | ^^^^^^^^^^^ this value is reassigned later and never used [INFO] [stdout] 123 | for c in s.chars().rev() { [INFO] [stdout] 124 | current = map[&c]; [INFO] [stdout] | ----------------- `current` is overwritten here before the previous value is read [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: value assigned to `mid` is never read [INFO] [stdout] --> src/ghost/secondbatch.rs:6:24 [INFO] [stdout] | [INFO] [stdout] 6 | let mut mid: i64 = 0; [INFO] [stdout] | ^ this value is reassigned later and never used [INFO] [stdout] ... [INFO] [stdout] 10 | mid = (low + high) / 2; [INFO] [stdout] | ---------------------- `mid` is overwritten here before the previous value is read [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: struct `MyStack` is never constructed [INFO] [stdout] --> src/data_structures/stack.rs:1:12 [INFO] [stdout] | [INFO] [stdout] 1 | pub struct MyStack { [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `pub` struct has private fields, no public constructor, and is not otherwise reachable through the external API, so consider providing a public constructor or removing it [INFO] [stdout] = note: `#[deny(unused_unconstructable_pub_structs)]` (part of `#[deny(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] error: could not compile `leetcode` (bin "leetcode") due to 1 previous error; 9 warnings emitted [INFO] [stderr] warning: build failed, waiting for other jobs to finish... [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/algorithms.rs:638:23 [INFO] [stdout] | [INFO] [stdout] 638 | pub fn find_duplicate(mut nums: Vec) -> i32 { [INFO] [stdout] | ----^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `i` [INFO] [stdout] --> src/algorithms.rs:719:10 [INFO] [stdout] | [INFO] [stdout] 719 | for (i, size) in chunk_sizes.into_iter().enumerate() {} [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_i` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `size` [INFO] [stdout] --> src/algorithms.rs:719:13 [INFO] [stdout] | [INFO] [stdout] 719 | for (i, size) in chunk_sizes.into_iter().enumerate() {} [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_size` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/algorithms.rs:791:45 [INFO] [stdout] | [INFO] [stdout] 791 | current_chars.into_iter().fold(0, |acc, mut c| acc + c.is_none() as i32) [INFO] [stdout] | ----^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/algorithms.rs:778:46 [INFO] [stdout] | [INFO] [stdout] 778 | pub fn num_matching_subseq(sequence: String, mut subsequences: Vec) -> i32 { [INFO] [stdout] | ----^^^^^^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/algorithms/part2.rs:35:24 [INFO] [stdout] | [INFO] [stdout] 35 | pub fn number_of_steps(mut num: i32) -> i32 { [INFO] [stdout] | ----^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: value assigned to `val` is never read [INFO] [stdout] --> src/ghost/firstbatch.rs:46:10 [INFO] [stdout] | [INFO] [stdout] 46 | let (mut val, mut carry) = (0, false); [INFO] [stdout] | ^^^^^^^ this value is reassigned later and never used [INFO] [stdout] ... [INFO] [stdout] 51 | val = carry as i32; [INFO] [stdout] | ------------------ `val` is overwritten here before the previous value is read [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: value assigned to `current` is never read [INFO] [stdout] --> src/ghost/firstbatch.rs:122:36 [INFO] [stdout] | [INFO] [stdout] 122 | let (mut result, mut previous, mut current) = (0, 0, 0); [INFO] [stdout] | ^^^^^^^^^^^ this value is reassigned later and never used [INFO] [stdout] 123 | for c in s.chars().rev() { [INFO] [stdout] 124 | current = map[&c]; [INFO] [stdout] | ----------------- `current` is overwritten here before the previous value is read [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: value assigned to `mid` is never read [INFO] [stdout] --> src/ghost/secondbatch.rs:6:24 [INFO] [stdout] | [INFO] [stdout] 6 | let mut mid: i64 = 0; [INFO] [stdout] | ^ this value is reassigned later and never used [INFO] [stdout] ... [INFO] [stdout] 10 | mid = (low + high) / 2; [INFO] [stdout] | ---------------------- `mid` is overwritten here before the previous value is read [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: struct `MyStack` is never constructed [INFO] [stdout] --> src/data_structures/stack.rs:1:12 [INFO] [stdout] | [INFO] [stdout] 1 | pub struct MyStack { [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `pub` struct has private fields, no public constructor, and is not otherwise reachable through the external API, so consider providing a public constructor or removing it [INFO] [stdout] = note: `#[deny(unused_unconstructable_pub_structs)]` (part of `#[deny(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] error: could not compile `leetcode` (bin "leetcode" test) due to 1 previous error; 9 warnings emitted [INFO] running `Command { std: "docker" "inspect" "75f0cb282c2d3b5405e40da41037b2eed24d9df345a3865474e2168390c3f2c8", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "75f0cb282c2d3b5405e40da41037b2eed24d9df345a3865474e2168390c3f2c8", kill_on_drop: false }` [INFO] [stdout] 75f0cb282c2d3b5405e40da41037b2eed24d9df345a3865474e2168390c3f2c8