[INFO] cloning repository https://github.com/VeyronSakai/my_leetcode_submits
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/VeyronSakai/my_leetcode_submits" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FVeyronSakai%2Fmy_leetcode_submits", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FVeyronSakai%2Fmy_leetcode_submits'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 7cf544642e921ce6c51146e69c318dfada67e243
[INFO] building VeyronSakai/my_leetcode_submits against master#11663cd3bfefef7d34e8f0892c250bf698049392+rustflags=-Dtail-expr-drop-order for pr-134523
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FVeyronSakai%2Fmy_leetcode_submits" "/workspace/builds/worker-7-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/VeyronSakai/my_leetcode_submits on toolchain 11663cd3bfefef7d34e8f0892c250bf698049392
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/VeyronSakai/my_leetcode_submits
[INFO] finished tweaking git repo https://github.com/VeyronSakai/my_leetcode_submits
[INFO] tweaked toml for git repo https://github.com/VeyronSakai/my_leetcode_submits written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/VeyronSakai/my_leetcode_submits 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" "+11663cd3bfefef7d34e8f0892c250bf698049392" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded test-macro v0.1.9
[INFO] [stderr]   Downloaded test-case v2.0.0-rc2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] fc070f2b07bd3b1f4846d9c2ca6a6333ec1c61243645491c85e63773447d4e3a
[INFO] running `Command { std: "docker" "start" "-a" "fc070f2b07bd3b1f4846d9c2ca6a6333ec1c61243645491c85e63773447d4e3a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "fc070f2b07bd3b1f4846d9c2ca6a6333ec1c61243645491c85e63773447d4e3a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fc070f2b07bd3b1f4846d9c2ca6a6333ec1c61243645491c85e63773447d4e3a", kill_on_drop: false }`
[INFO] [stdout] fc070f2b07bd3b1f4846d9c2ca6a6333ec1c61243645491c85e63773447d4e3a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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 -Dtail-expr-drop-order" "-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 223480a7abeb731c223f3fbf2f1a69ea8939bf47743fdba7c33fbb4c79231d5f
[INFO] running `Command { std: "docker" "start" "-a" "223480a7abeb731c223f3fbf2f1a69ea8939bf47743fdba7c33fbb4c79231d5f", kill_on_drop: false }`
[INFO] [stderr]    Compiling my_leetcode_submits v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0433]: failed to resolve: could not find `macos` in `os`
[INFO] [stdout]  --> src/problem232.rs:1:14
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::os::macos::raw::stat;
[INFO] [stdout]   |              ^^^^^ could not find `macos` in `os`
[INFO] [stdout]   |
[INFO] [stdout] note: found an item that was configured out
[INFO] [stdout]  --> /rustc/11663cd3bfefef7d34e8f0892c250bf698049392/library/std/src/os/mod.rs:155:9
[INFO] [stdout] note: the item is gated behind the `macos` feature
[INFO] [stdout]  --> /rustc/11663cd3bfefef7d34e8f0892c250bf698049392/library/std/src/os/mod.rs:154:7
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::collections::HashMap`
[INFO] [stdout]   --> src/problem1038.rs:22:5
[INFO] [stdout]    |
[INFO] [stdout] 22 | use std::collections::HashMap;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::cmp::max`
[INFO] [stdout]   --> src/problem104.rs:24:5
[INFO] [stdout]    |
[INFO] [stdout] 24 | use std::cmp::max;
[INFO] [stdout]    |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::env::var`
[INFO] [stdout]  --> src/problem15.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::env::var;
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]   --> src/problem1592.rs:10:13
[INFO] [stdout]    |
[INFO] [stdout] 10 |             ((total_spaces_num / (words.len() - 1), total_spaces_num % (words.len() - 1)))
[INFO] [stdout]    |             ^                                                                            ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 10 -             ((total_spaces_num / (words.len() - 1), total_spaces_num % (words.len() - 1)))
[INFO] [stdout] 10 +             (total_spaces_num / (words.len() - 1), total_spaces_num % (words.len() - 1))
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `BTreeMap`
[INFO] [stdout]  --> src/problem1636.rs:1:24
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::collections::{BTreeMap, HashMap};
[INFO] [stdout]   |                        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around assigned value
[INFO] [stdout]   --> src/problem168.rs:11:28
[INFO] [stdout]    |
[INFO] [stdout] 11 |             let char_num = (t + ('A' as u8));
[INFO] [stdout]    |                            ^               ^
[INFO] [stdout]    |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 11 -             let char_num = (t + ('A' as u8));
[INFO] [stdout] 11 +             let char_num = t + ('A' as u8);
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::cmp::max`
[INFO] [stdout]  --> src/problem169.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::cmp::max;
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::collections::HashSet`
[INFO] [stdout]  --> src/problem1791.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::collections::HashSet;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `HashSet`
[INFO] [stdout]  --> src/problem1971.rs:1:33
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::collections::{HashMap, HashSet};
[INFO] [stdout]   |                                 ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::problem1305::TreeNode`
[INFO] [stdout]  --> src/problem2.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use crate::problem1305::TreeNode;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::collections::VecDeque`
[INFO] [stdout]  --> src/problem2073.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::collections::VecDeque;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around function argument
[INFO] [stdout]   --> src/problem219.rs:22:45
[INFO] [stdout]    |
[INFO] [stdout] 22 |             let c = mp.get_mut(&nums[max(0, (i as i32 - k - 1)) as usize]).unwrap();
[INFO] [stdout]    |                                             ^                ^
[INFO] [stdout]    |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 22 -             let c = mp.get_mut(&nums[max(0, (i as i32 - k - 1)) as usize]).unwrap();
[INFO] [stdout] 22 +             let c = mp.get_mut(&nums[max(0, i as i32 - k - 1) as usize]).unwrap();
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::mem::swap`
[INFO] [stdout]  --> src/problem246.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::mem::swap;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `HashSet`
[INFO] [stdout]  --> src/problem387.rs:1:33
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::collections::{HashMap, HashSet};
[INFO] [stdout]   |                                 ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::cmp::Reverse`
[INFO] [stdout]  --> src/problem506.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::cmp::Reverse;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `BinaryHeap`
[INFO] [stdout]  --> src/problem506.rs:2:24
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::collections::{BinaryHeap, HashMap};
[INFO] [stdout]   |                        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `n`
[INFO] [stdout]   --> src/problem101.rs:39:23
[INFO] [stdout]    |
[INFO] [stdout] 39 |                 (Some(n), None) | (None, Some(n)) => {
[INFO] [stdout]    |                       ^                       ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] help: if this is intentional, prefix it with an underscore
[INFO] [stdout]    |
[INFO] [stdout] 39 |                 (Some(_n), None) | (None, Some(_n)) => {
[INFO] [stdout]    |                       ~~                       ~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `l`
[INFO] [stdout]   --> src/problem1022.rs:57:27
[INFO] [stdout]    |
[INFO] [stdout] 57 |                     (Some(l), Some(r)) => {
[INFO] [stdout]    |                           ^ help: if this is intentional, prefix it with an underscore: `_l`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `r`
[INFO] [stdout]   --> src/problem1022.rs:57:36
[INFO] [stdout]    |
[INFO] [stdout] 57 |                     (Some(l), Some(r)) => {
[INFO] [stdout]    |                                    ^ help: if this is intentional, prefix it with an underscore: `_r`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/problem1025.rs:18:17
[INFO] [stdout]    |
[INFO] [stdout] 18 |     fn get_divs(mut num: i32) -> HashSet<i32> {
[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: variable does not need to be mutable
[INFO] [stdout]   --> src/problem1100.rs:17:21
[INFO] [stdout]    |
[INFO] [stdout] 17 |                 let mut count = cur_mp.entry(c).or_insert(0);
[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/problem1100.rs:25:21
[INFO] [stdout]    |
[INFO] [stdout] 25 |                 let mut count = cur_mp.get_mut(&chars[i]).unwrap();
[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/problem1100.rs:31:21
[INFO] [stdout]    |
[INFO] [stdout] 31 |                 let mut count = cur_mp.entry(c).or_insert(0);
[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/problem1160.rs:8:17
[INFO] [stdout]   |
[INFO] [stdout] 8 |             let mut count = char_mp.entry(c).or_insert(0);
[INFO] [stdout]   |                 ----^^^^^
[INFO] [stdout]   |                 |
[INFO] [stdout]   |                 help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `cur_dp` is never read
[INFO] [stdout]  --> src/problem119.rs:5:17
[INFO] [stdout]   |
[INFO] [stdout] 5 |         let mut cur_dp: Vec<i32> = Vec::new();
[INFO] [stdout]   |                 ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = help: maybe it is overwritten before being read?
[INFO] [stdout]   = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]  --> src/problem1232.rs:5:13
[INFO] [stdout]   |
[INFO] [stdout] 5 |         let mut coordinates = coordinates;
[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/problem1502.rs:10:13
[INFO] [stdout]    |
[INFO] [stdout] 10 |         let mut gap = arr[1] - bef;
[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/problem155.rs:20:13
[INFO] [stdout]    |
[INFO] [stdout] 20 |         let mut count = self.mp.entry(val).or_insert(0);
[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/problem155.rs:28:13
[INFO] [stdout]    |
[INFO] [stdout] 28 |         let mut count = self.mp.get_mut(&val).unwrap();
[INFO] [stdout]    |             ----^^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `c`
[INFO] [stdout]   --> src/problem159.rs:19:69
[INFO] [stdout]    |
[INFO] [stdout] 19 |                 let (&del_key, &del_val) = mp.iter().min_by_key(|&(&c, &pos)| pos).unwrap();
[INFO] [stdout]    |                                                                     ^ help: if this is intentional, prefix it with an underscore: `_c`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]  --> src/problem1790.rs:5:13
[INFO] [stdout]   |
[INFO] [stdout] 5 |         let mut s1 = s1;
[INFO] [stdout]   |             ----^^
[INFO] [stdout]   |             |
[INFO] [stdout]   |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]  --> src/problem1791.rs:8:17
[INFO] [stdout]   |
[INFO] [stdout] 8 |         let mut x = 0;
[INFO] [stdout]   |                 ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]  --> src/problem1791.rs:8:13
[INFO] [stdout]   |
[INFO] [stdout] 8 |         let mut x = 0;
[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/problem1852.rs:10:17
[INFO] [stdout]    |
[INFO] [stdout] 10 |             let mut count = cur_mp.entry(nums[i]).or_insert(0);
[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/problem1852.rs:16:17
[INFO] [stdout]    |
[INFO] [stdout] 16 |             let mut i_count = cur_mp.entry(nums[i + k]).or_insert(0);
[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/problem1852.rs:19:17
[INFO] [stdout]    |
[INFO] [stdout] 19 |             let mut j_count = cur_mp.get_mut(&nums[i]).unwrap();
[INFO] [stdout]    |                 ----^^^^^^^
[INFO] [stdout]    |                 |
[INFO] [stdout]    |                 help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `set`
[INFO] [stdout]  --> src/problem1876.rs:5:17
[INFO] [stdout]   |
[INFO] [stdout] 5 |         let mut set: HashSet<char> = HashSet::new();
[INFO] [stdout]   |                 ^^^ help: if this is intentional, prefix it with an underscore: `_set`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]  --> src/problem1876.rs:5:13
[INFO] [stdout]   |
[INFO] [stdout] 5 |         let mut set: HashSet<char> = HashSet::new();
[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/problem1971.rs:10:17
[INFO] [stdout]    |
[INFO] [stdout] 10 |             let mut v1 = graph.entry(vec[0]).or_insert(Vec::new());
[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/problem1971.rs:13:17
[INFO] [stdout]    |
[INFO] [stdout] 13 |             let mut v2 = graph.entry(vec[1]).or_insert(Vec::new());
[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/problem205.rs:15:13
[INFO] [stdout]    |
[INFO] [stdout] 15 |         let mut s_chars = s.chars().collect::<Vec<char>>();
[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/problem205.rs:16:13
[INFO] [stdout]    |
[INFO] [stdout] 16 |         let mut t_chars = t.chars().collect::<Vec<char>>();
[INFO] [stdout]    |             ----^^^^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `cur` is never read
[INFO] [stdout]   --> src/problem206.rs:45:17
[INFO] [stdout]    |
[INFO] [stdout] 45 |         let mut cur: Option<Box<ListNode>> = None;
[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/problem206.rs:51:17
[INFO] [stdout]    |
[INFO] [stdout] 51 |             let mut node = ListNode {
[INFO] [stdout]    |                 ----^^^^
[INFO] [stdout]    |                 |
[INFO] [stdout]    |                 help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]   --> src/problem2099.rs:18:28
[INFO] [stdout]    |
[INFO] [stdout] 18 |         vec.sort_by_key(|&(x, i)| i);
[INFO] [stdout]    |                            ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]   --> src/problem2099.rs:20:30
[INFO] [stdout]    |
[INFO] [stdout] 20 |         vec.iter().map(|&(x, i)| x).collect::<Vec<i32>>()
[INFO] [stdout]    |                              ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]  --> src/problem2099.rs:6:13
[INFO] [stdout]   |
[INFO] [stdout] 6 |         let mut k = k as usize;
[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/problem21.rs:44:24
[INFO] [stdout]    |
[INFO] [stdout] 44 |         while let Some(mut cur) = tail {
[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/problem219.rs:13:17
[INFO] [stdout]    |
[INFO] [stdout] 13 |             let mut count = mp.entry(nums[i]).or_insert(0);
[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/problem219.rs:25:17
[INFO] [stdout]    |
[INFO] [stdout] 25 |             let mut count = mp.entry(nums[i]).or_insert(0);
[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/problem246.rs:17:17
[INFO] [stdout]    |
[INFO] [stdout] 17 |             let mut rotated_char_1 = match Solution::rotate_single_num(&tmp[i]) {
[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/problem246.rs:22:17
[INFO] [stdout]    |
[INFO] [stdout] 22 |             let mut rotated_char_2 = match Solution::rotate_single_num(&tmp[num.len() - i - 1]) {
[INFO] [stdout]    |                 ----^^^^^^^^^^^^^^
[INFO] [stdout]    |                 |
[INFO] [stdout]    |                 help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `c`
[INFO] [stdout]   --> src/problem340.rs:20:69
[INFO] [stdout]    |
[INFO] [stdout] 20 |                 let (&del_key, &del_val) = mp.iter().min_by_key(|&(&c, &pos)| pos).unwrap();
[INFO] [stdout]    |                                                                     ^ help: if this is intentional, prefix it with an underscore: `_c`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]  --> src/problem345.rs:5:13
[INFO] [stdout]   |
[INFO] [stdout] 5 |         let mut s = s;
[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/problem383.rs:10:17
[INFO] [stdout]    |
[INFO] [stdout] 10 |             let mut count = magazine_map.entry(char).or_insert(0);
[INFO] [stdout]    |                 ----^^^^^
[INFO] [stdout]    |                 |
[INFO] [stdout]    |                 help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `key`
[INFO] [stdout]   --> src/problem501.rs:30:30
[INFO] [stdout]    |
[INFO] [stdout] 30 |         mp.iter().filter(|&(&key, &val)| val == max_val).map(|x| *x.0).collect()
[INFO] [stdout]    |                              ^^^ help: if this is intentional, prefix it with an underscore: `_key`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/problem501.rs:37:21
[INFO] [stdout]    |
[INFO] [stdout] 37 |                 let mut count = mp.entry(n.borrow().val).or_insert(0);
[INFO] [stdout]    |                     ----^^^^^
[INFO] [stdout]    |                     |
[INFO] [stdout]    |                     help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `left`
[INFO] [stdout]  --> src/problem567.rs:6:17
[INFO] [stdout]   |
[INFO] [stdout] 6 |         let mut left = 0;
[INFO] [stdout]   |                 ^^^^ help: if this is intentional, prefix it with an underscore: `_left`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `right`
[INFO] [stdout]  --> src/problem567.rs:7:17
[INFO] [stdout]   |
[INFO] [stdout] 7 |         let mut right = 0;
[INFO] [stdout]   |                 ^^^^^ help: if this is intentional, prefix it with an underscore: `_right`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]  --> src/problem567.rs:6:13
[INFO] [stdout]   |
[INFO] [stdout] 6 |         let mut left = 0;
[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/problem567.rs:7:13
[INFO] [stdout]   |
[INFO] [stdout] 7 |         let mut right = 0;
[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/problem637.rs:30:13
[INFO] [stdout]    |
[INFO] [stdout] 30 |         let mut cur_level = 0;
[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/problem637.rs:49:21
[INFO] [stdout]    |
[INFO] [stdout] 49 |                 let mut vec = map.entry(cur_level).or_insert(vec![]);
[INFO] [stdout]    |                     ----^^^
[INFO] [stdout]    |                     |
[INFO] [stdout]    |                     help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `ret` is never read
[INFO] [stdout]  --> src/problem643.rs:4:17
[INFO] [stdout]   |
[INFO] [stdout] 4 |         let mut ret: f64 = f64::MIN;
[INFO] [stdout]   |                 ^^^
[INFO] [stdout]   |
[INFO] [stdout]   = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `val`
[INFO] [stdout]   --> src/problem703.rs:17:19
[INFO] [stdout]    |
[INFO] [stdout] 17 |     fn add(&self, val: i32) -> i32 {
[INFO] [stdout]    |                   ^^^ help: if this is intentional, prefix it with an underscore: `_val`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]  --> src/problem709.rs:3:13
[INFO] [stdout]   |
[INFO] [stdout] 3 |         let mut s = s;
[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/problem914.rs:7:13
[INFO] [stdout]   |
[INFO] [stdout] 7 |         let mut deck = deck;
[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/problem914.rs:12:17
[INFO] [stdout]    |
[INFO] [stdout] 12 |             let mut count = mp.entry(*val).or_insert(0);
[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/problem917.rs:5:13
[INFO] [stdout]   |
[INFO] [stdout] 5 |         let mut s = s;
[INFO] [stdout]   |             ----^
[INFO] [stdout]   |             |
[INFO] [stdout]   |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `root`
[INFO] [stdout]   --> src/problem993.rs:26:23
[INFO] [stdout]    |
[INFO] [stdout] 26 |     pub fn is_cousins(root: Option<Rc<RefCell<TreeNode>>>, x: i32, y: i32) -> bool {
[INFO] [stdout]    |                       ^^^^ help: if this is intentional, prefix it with an underscore: `_root`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]   --> src/problem993.rs:26:60
[INFO] [stdout]    |
[INFO] [stdout] 26 |     pub fn is_cousins(root: Option<Rc<RefCell<TreeNode>>>, x: i32, y: i32) -> bool {
[INFO] [stdout]    |                                                            ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `y`
[INFO] [stdout]   --> src/problem993.rs:26:68
[INFO] [stdout]    |
[INFO] [stdout] 26 |     pub fn is_cousins(root: Option<Rc<RefCell<TreeNode>>>, x: i32, y: i32) -> bool {
[INFO] [stdout]    |                                                                    ^ help: if this is intentional, prefix it with an underscore: `_y`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/problem997.rs:14:17
[INFO] [stdout]    |
[INFO] [stdout] 14 |             let mut count = mp.entry(x[1] - 1).or_insert(0);
[INFO] [stdout]    |                 ----^^^^^
[INFO] [stdout]    |                 |
[INFO] [stdout]    |                 help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0433`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `my_leetcode_submits` (lib) due to 1 previous error; 73 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "223480a7abeb731c223f3fbf2f1a69ea8939bf47743fdba7c33fbb4c79231d5f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "223480a7abeb731c223f3fbf2f1a69ea8939bf47743fdba7c33fbb4c79231d5f", kill_on_drop: false }`
[INFO] [stdout] 223480a7abeb731c223f3fbf2f1a69ea8939bf47743fdba7c33fbb4c79231d5f