[INFO] cloning repository https://github.com/abdul2801/Algo
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/abdul2801/Algo" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fabdul2801%2FAlgo", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fabdul2801%2FAlgo'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 2519acd48293d1a4811541cb9e2188c30beb5166
[INFO] building abdul2801/Algo 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%2Fabdul2801%2FAlgo" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/abdul2801/Algo 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/abdul2801/Algo
[INFO] finished tweaking git repo https://github.com/abdul2801/Algo
[INFO] tweaked toml for git repo https://github.com/abdul2801/Algo written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/abdul2801/Algo 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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] 25d8d5d4e815f05b6ca3324738dc0050ac121974f2839cc4296ae66d5c3d95dd
[INFO] running `Command { std: "docker" "start" "-a" "25d8d5d4e815f05b6ca3324738dc0050ac121974f2839cc4296ae66d5c3d95dd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "25d8d5d4e815f05b6ca3324738dc0050ac121974f2839cc4296ae66d5c3d95dd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "25d8d5d4e815f05b6ca3324738dc0050ac121974f2839cc4296ae66d5c3d95dd", kill_on_drop: false }`
[INFO] [stdout] 25d8d5d4e815f05b6ca3324738dc0050ac121974f2839cc4296ae66d5c3d95dd
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] 220eebd25ef2d5a5a6e004b5ef0910c099a8d967dc4f66909ad5a4656bec81b9
[INFO] running `Command { std: "docker" "start" "-a" "220eebd25ef2d5a5a6e004b5ef0910c099a8d967dc4f66909ad5a4656bec81b9", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.141
[INFO] [stderr]    Compiling getrandom v0.2.9
[INFO] [stderr]    Compiling rand_core v0.6.4
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling rand v0.8.5
[INFO] [stderr]    Compiling algo v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `finduniquechar::first_uniq_char`
[INFO] [stdout]   --> src/main.rs:16:5
[INFO] [stdout]    |
[INFO] [stdout] 16 | use finduniquechar::first_uniq_char;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `heap::heap`
[INFO] [stdout]   --> src/main.rs:17:5
[INFO] [stdout]    |
[INFO] [stdout] 17 | use heap::heap;
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `search_matrix::search_matri`
[INFO] [stdout]   --> src/main.rs:18:5
[INFO] [stdout]    |
[INFO] [stdout] 18 | use search_matrix::search_matri;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::min_arr::find_min`
[INFO] [stdout]   --> src/main.rs:20:5
[INFO] [stdout]    |
[INFO] [stdout] 20 | use crate::min_arr::find_min;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::num`
[INFO] [stdout]  --> src/search_rot.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::num;
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `core::time`
[INFO] [stdout]  --> src/timestamp.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use core::time;
[INFO] [stdout]   |     ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::num`
[INFO] [stdout]  --> src/peak.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::num;
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::num`
[INFO] [stdout]  --> src/min_subarr_sum.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::num;
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]   --> src/removeduplicate.rs:11:10
[INFO] [stdout]    |
[INFO] [stdout] 11 |     for (i,x) in s.chars().into_iter().enumerate() {
[INFO] [stdout]    |          ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `c`
[INFO] [stdout]   --> src/eat.rs:24:21
[INFO] [stdout]    |
[INFO] [stdout] 24 |                 let c = *i;
[INFO] [stdout]    |                     ^ help: if this is intentional, prefix it with an underscore: `_c`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `cur`
[INFO] [stdout]   --> src/ship.rs:25:13
[INFO] [stdout]    |
[INFO] [stdout] 25 |         let cur = *i;
[INFO] [stdout]    |             ^^^ help: if this is intentional, prefix it with an underscore: `_cur`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `l`
[INFO] [stdout]  --> src/area.rs:2:6
[INFO] [stdout]   |
[INFO] [stdout] 2 |  let l=0;
[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/area.rs:3:6
[INFO] [stdout]   |
[INFO] [stdout] 3 |  let r = height.len()-1;
[INFO] [stdout]   |      ^ help: if this is intentional, prefix it with an underscore: `_r`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `max`
[INFO] [stdout]  --> src/area.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | let max = 0;
[INFO] [stdout]   |     ^^^ help: if this is intentional, prefix it with an underscore: `_max`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `BrowserHistory` is never constructed
[INFO] [stdout]  --> src/browser_history.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub struct BrowserHistory {
[INFO] [stdout]   |            ^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `visit`, `back`, and `forward` are never used
[INFO] [stdout]   --> src/browser_history.rs:9:12
[INFO] [stdout]    |
[INFO] [stdout] 7  |  impl BrowserHistory {
[INFO] [stdout]    |  ------------------- associated items in this implementation
[INFO] [stdout] 8  |
[INFO] [stdout] 9  |     pub fn new(homepage: String) -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 14 |     pub fn visit(& mut self, url: String) {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 21 |    pub fn back(& mut self, steps: i32) -> String {
[INFO] [stdout]    |           ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 38 |     pub fn forward(&mut self, steps: i32) -> String {
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `MinStack` is never constructed
[INFO] [stdout]  --> src/stack.rs:3:12
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub struct MinStack {
[INFO] [stdout]   |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `push`, `pop`, `top`, and `get_min` are never used
[INFO] [stdout]   --> src/stack.rs:13:12
[INFO] [stdout]    |
[INFO] [stdout] 11 | impl MinStack {
[INFO] [stdout]    | ------------- associated items in this implementation
[INFO] [stdout] 12 |
[INFO] [stdout] 13 |     pub fn new() -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 17 |     pub fn push(& mut self, val: i32) {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 36 |     pub fn pop(& mut self) {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 47 |     pub fn top(&self) -> i32 {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 57 |     pub fn get_min(&self) -> i32 {
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `remove_duplicate_letters` is never used
[INFO] [stdout]  --> src/removeduplicate.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn remove_duplicate_letters(s: String) -> String {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `heap` is never used
[INFO] [stdout]  --> src/heap.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub fn heap() {
[INFO] [stdout]   |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `first_uniq_char` is never used
[INFO] [stdout]  --> src/finduniquechar.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn first_uniq_char(s: String) -> i32 {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `search_matri` is never used
[INFO] [stdout]  --> src/search_matrix.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn search_matri(matrix: Vec<Vec<i32>>, target: i32) -> bool {
[INFO] [stdout]   |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `min_eating_speed` is never used
[INFO] [stdout]  --> src/eat.rs:4:8
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub fn min_eating_speed(piles: Vec<i32>, h: i32) -> i32 {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `check` is never used
[INFO] [stdout]   --> src/eat.rs:20:8
[INFO] [stdout]    |
[INFO] [stdout] 20 | pub fn check(mid : i32 , h : i32 , piles : &Vec<i32>) -> bool {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `ship_within_days` is never used
[INFO] [stdout]  --> src/ship.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn ship_within_days(weights: Vec<i32>, days: i32) -> i32 {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `check` is never used
[INFO] [stdout]   --> src/ship.rs:18:8
[INFO] [stdout]    |
[INFO] [stdout] 18 | pub fn check(x : i32 , days: i32 , weights: &Vec<i32> ) -> bool {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `find_min` is never used
[INFO] [stdout]  --> src/min_arr.rs:2:8
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub fn find_min(nums: Vec<i32>) -> i32 {
[INFO] [stdout]   |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `search` is never used
[INFO] [stdout]  --> src/search_rot.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub fn search(nums: Vec<i32>, target: i32) -> i32 {
[INFO] [stdout]   |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `TimeMap` is never constructed
[INFO] [stdout]  --> src/timestamp.rs:4:8
[INFO] [stdout]   |
[INFO] [stdout] 4 | struct TimeMap {
[INFO] [stdout]   |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `set`, and `get` are never used
[INFO] [stdout]   --> src/timestamp.rs:13:8
[INFO] [stdout]    |
[INFO] [stdout] 11 | impl TimeMap {
[INFO] [stdout]    | ------------ associated items in this implementation
[INFO] [stdout] 12 |
[INFO] [stdout] 13 |     fn new() -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 17 |     fn set(& mut self, key: String, value: String, timestamp: i32) {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 24 |     fn get(&self, key: String, timestamp: i32) -> String {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `daily_temperatures` is never used
[INFO] [stdout]  --> src/temp.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn daily_temperatures(temperatures: Vec<i32>) -> Vec<i32> {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `ispali` is never used
[INFO] [stdout]  --> src/ispali.rs:2:8
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub fn ispali(s : String) -> bool {
[INFO] [stdout]   |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `two_sum` is never used
[INFO] [stdout]  --> src/twosumsort.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn two_sum(numbers: Vec<i32>, target: i32) -> Vec<i32> {
[INFO] [stdout]   |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `max_area` is never used
[INFO] [stdout]  --> src/area.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn max_area(height: Vec<i32>) -> i32 {
[INFO] [stdout]   |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `max_profit` is never used
[INFO] [stdout]  --> src/stock.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn max_profit(prices: Vec<i32>) -> i32 {
[INFO] [stdout]   |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `length_of_longest_substring` is never used
[INFO] [stdout]  --> src/maxsubstring.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub fn length_of_longest_substring(s: String) -> i32 {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `min_length` is never used
[INFO] [stdout]  --> src/minLength.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn min_length(s: String) -> i32 {
[INFO] [stdout]   |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `recurse` is never used
[INFO] [stdout]  --> src/minLength.rs:5:8
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub fn recurse(t:&mut String , x: usize) -> i32 {
[INFO] [stdout]   |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `is_valid_partition` is never used
[INFO] [stdout]  --> src/minpali.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn is_valid_partition(square: u32) -> bool {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `punishment_number` is never used
[INFO] [stdout]   --> src/minpali.rs:21:15
[INFO] [stdout]    |
[INFO] [stdout] 21 | pub(crate) fn punishment_number(n: u32) -> u32 {
[INFO] [stdout]    |               ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `k_weakest_rows` is never used
[INFO] [stdout]  --> src/kweakest.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn k_weakest_rows(mat: Vec<Vec<i32>>, k: i32) -> Vec<i32> {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Solution` is never constructed
[INFO] [stdout]  --> src/peak.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | struct Solution;
[INFO] [stdout]   |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `find_peak_element` is never used
[INFO] [stdout]  --> src/peak.rs:7:12
[INFO] [stdout]   |
[INFO] [stdout] 6 | impl Solution {
[INFO] [stdout]   | ------------- associated function in this implementation
[INFO] [stdout] 7 |     pub fn find_peak_element(nums: Vec<i32>) -> i32 {
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `min_sub_array_len` is never used
[INFO] [stdout]  --> src/min_subarr_sum.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub fn min_sub_array_len(mut target: i32, mut nums: Vec<i32>) -> i32 {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: module `minLength` should have a snake case name
[INFO] [stdout]   --> src/main.rs:44:5
[INFO] [stdout]    |
[INFO] [stdout] 44 | mod minLength;
[INFO] [stdout]    |     ^^^^^^^^^ help: convert the identifier to snake case: `min_length`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: module `MakeZero` should have a snake case name
[INFO] [stdout]   --> src/main.rs:47:5
[INFO] [stdout]    |
[INFO] [stdout] 47 | mod MakeZero;
[INFO] [stdout]    |     ^^^^^^^^ help: convert the identifier to snake case: `make_zero`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.36s
[INFO] running `Command { std: "docker" "inspect" "220eebd25ef2d5a5a6e004b5ef0910c099a8d967dc4f66909ad5a4656bec81b9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "220eebd25ef2d5a5a6e004b5ef0910c099a8d967dc4f66909ad5a4656bec81b9", kill_on_drop: false }`
[INFO] [stdout] 220eebd25ef2d5a5a6e004b5ef0910c099a8d967dc4f66909ad5a4656bec81b9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] da1eca3f2e498deb256ab12b62bd44878118845900d2793e5698058f472bf3e3
[INFO] running `Command { std: "docker" "start" "-a" "da1eca3f2e498deb256ab12b62bd44878118845900d2793e5698058f472bf3e3", kill_on_drop: false }`
[INFO] [stderr]    Compiling algo v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `finduniquechar::first_uniq_char`
[INFO] [stdout]   --> src/main.rs:16:5
[INFO] [stdout]    |
[INFO] [stdout] 16 | use finduniquechar::first_uniq_char;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `heap::heap`
[INFO] [stdout]   --> src/main.rs:17:5
[INFO] [stdout]    |
[INFO] [stdout] 17 | use heap::heap;
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `search_matrix::search_matri`
[INFO] [stdout]   --> src/main.rs:18:5
[INFO] [stdout]    |
[INFO] [stdout] 18 | use search_matrix::search_matri;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::min_arr::find_min`
[INFO] [stdout]   --> src/main.rs:20:5
[INFO] [stdout]    |
[INFO] [stdout] 20 | use crate::min_arr::find_min;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::num`
[INFO] [stdout]  --> src/search_rot.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::num;
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `core::time`
[INFO] [stdout]  --> src/timestamp.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use core::time;
[INFO] [stdout]   |     ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::num`
[INFO] [stdout]  --> src/peak.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::num;
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::num`
[INFO] [stdout]  --> src/min_subarr_sum.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::num;
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]   --> src/removeduplicate.rs:11:10
[INFO] [stdout]    |
[INFO] [stdout] 11 |     for (i,x) in s.chars().into_iter().enumerate() {
[INFO] [stdout]    |          ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `c`
[INFO] [stdout]   --> src/eat.rs:24:21
[INFO] [stdout]    |
[INFO] [stdout] 24 |                 let c = *i;
[INFO] [stdout]    |                     ^ help: if this is intentional, prefix it with an underscore: `_c`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `cur`
[INFO] [stdout]   --> src/ship.rs:25:13
[INFO] [stdout]    |
[INFO] [stdout] 25 |         let cur = *i;
[INFO] [stdout]    |             ^^^ help: if this is intentional, prefix it with an underscore: `_cur`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `l`
[INFO] [stdout]  --> src/area.rs:2:6
[INFO] [stdout]   |
[INFO] [stdout] 2 |  let l=0;
[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/area.rs:3:6
[INFO] [stdout]   |
[INFO] [stdout] 3 |  let r = height.len()-1;
[INFO] [stdout]   |      ^ help: if this is intentional, prefix it with an underscore: `_r`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `max`
[INFO] [stdout]  --> src/area.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | let max = 0;
[INFO] [stdout]   |     ^^^ help: if this is intentional, prefix it with an underscore: `_max`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `BrowserHistory` is never constructed
[INFO] [stdout]  --> src/browser_history.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub struct BrowserHistory {
[INFO] [stdout]   |            ^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `visit`, `back`, and `forward` are never used
[INFO] [stdout]   --> src/browser_history.rs:9:12
[INFO] [stdout]    |
[INFO] [stdout] 7  |  impl BrowserHistory {
[INFO] [stdout]    |  ------------------- associated items in this implementation
[INFO] [stdout] 8  |
[INFO] [stdout] 9  |     pub fn new(homepage: String) -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 14 |     pub fn visit(& mut self, url: String) {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 21 |    pub fn back(& mut self, steps: i32) -> String {
[INFO] [stdout]    |           ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 38 |     pub fn forward(&mut self, steps: i32) -> String {
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `MinStack` is never constructed
[INFO] [stdout]  --> src/stack.rs:3:12
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub struct MinStack {
[INFO] [stdout]   |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `push`, `pop`, `top`, and `get_min` are never used
[INFO] [stdout]   --> src/stack.rs:13:12
[INFO] [stdout]    |
[INFO] [stdout] 11 | impl MinStack {
[INFO] [stdout]    | ------------- associated items in this implementation
[INFO] [stdout] 12 |
[INFO] [stdout] 13 |     pub fn new() -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 17 |     pub fn push(& mut self, val: i32) {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 36 |     pub fn pop(& mut self) {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 47 |     pub fn top(&self) -> i32 {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 57 |     pub fn get_min(&self) -> i32 {
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `remove_duplicate_letters` is never used
[INFO] [stdout]  --> src/removeduplicate.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn remove_duplicate_letters(s: String) -> String {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `heap` is never used
[INFO] [stdout]  --> src/heap.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub fn heap() {
[INFO] [stdout]   |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `first_uniq_char` is never used
[INFO] [stdout]  --> src/finduniquechar.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn first_uniq_char(s: String) -> i32 {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `search_matri` is never used
[INFO] [stdout]  --> src/search_matrix.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn search_matri(matrix: Vec<Vec<i32>>, target: i32) -> bool {
[INFO] [stdout]   |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `min_eating_speed` is never used
[INFO] [stdout]  --> src/eat.rs:4:8
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub fn min_eating_speed(piles: Vec<i32>, h: i32) -> i32 {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `check` is never used
[INFO] [stdout]   --> src/eat.rs:20:8
[INFO] [stdout]    |
[INFO] [stdout] 20 | pub fn check(mid : i32 , h : i32 , piles : &Vec<i32>) -> bool {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `ship_within_days` is never used
[INFO] [stdout]  --> src/ship.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn ship_within_days(weights: Vec<i32>, days: i32) -> i32 {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `check` is never used
[INFO] [stdout]   --> src/ship.rs:18:8
[INFO] [stdout]    |
[INFO] [stdout] 18 | pub fn check(x : i32 , days: i32 , weights: &Vec<i32> ) -> bool {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `find_min` is never used
[INFO] [stdout]  --> src/min_arr.rs:2:8
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub fn find_min(nums: Vec<i32>) -> i32 {
[INFO] [stdout]   |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `search` is never used
[INFO] [stdout]  --> src/search_rot.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub fn search(nums: Vec<i32>, target: i32) -> i32 {
[INFO] [stdout]   |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `TimeMap` is never constructed
[INFO] [stdout]  --> src/timestamp.rs:4:8
[INFO] [stdout]   |
[INFO] [stdout] 4 | struct TimeMap {
[INFO] [stdout]   |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `set`, and `get` are never used
[INFO] [stdout]   --> src/timestamp.rs:13:8
[INFO] [stdout]    |
[INFO] [stdout] 11 | impl TimeMap {
[INFO] [stdout]    | ------------ associated items in this implementation
[INFO] [stdout] 12 |
[INFO] [stdout] 13 |     fn new() -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 17 |     fn set(& mut self, key: String, value: String, timestamp: i32) {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 24 |     fn get(&self, key: String, timestamp: i32) -> String {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `daily_temperatures` is never used
[INFO] [stdout]  --> src/temp.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn daily_temperatures(temperatures: Vec<i32>) -> Vec<i32> {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `ispali` is never used
[INFO] [stdout]  --> src/ispali.rs:2:8
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub fn ispali(s : String) -> bool {
[INFO] [stdout]   |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `two_sum` is never used
[INFO] [stdout]  --> src/twosumsort.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn two_sum(numbers: Vec<i32>, target: i32) -> Vec<i32> {
[INFO] [stdout]   |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `max_area` is never used
[INFO] [stdout]  --> src/area.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn max_area(height: Vec<i32>) -> i32 {
[INFO] [stdout]   |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `max_profit` is never used
[INFO] [stdout]  --> src/stock.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn max_profit(prices: Vec<i32>) -> i32 {
[INFO] [stdout]   |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `length_of_longest_substring` is never used
[INFO] [stdout]  --> src/maxsubstring.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub fn length_of_longest_substring(s: String) -> i32 {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `min_length` is never used
[INFO] [stdout]  --> src/minLength.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn min_length(s: String) -> i32 {
[INFO] [stdout]   |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `recurse` is never used
[INFO] [stdout]  --> src/minLength.rs:5:8
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub fn recurse(t:&mut String , x: usize) -> i32 {
[INFO] [stdout]   |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `is_valid_partition` is never used
[INFO] [stdout]  --> src/minpali.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn is_valid_partition(square: u32) -> bool {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `punishment_number` is never used
[INFO] [stdout]   --> src/minpali.rs:21:15
[INFO] [stdout]    |
[INFO] [stdout] 21 | pub(crate) fn punishment_number(n: u32) -> u32 {
[INFO] [stdout]    |               ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `k_weakest_rows` is never used
[INFO] [stdout]  --> src/kweakest.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn k_weakest_rows(mat: Vec<Vec<i32>>, k: i32) -> Vec<i32> {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Solution` is never constructed
[INFO] [stdout]  --> src/peak.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | struct Solution;
[INFO] [stdout]   |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `find_peak_element` is never used
[INFO] [stdout]  --> src/peak.rs:7:12
[INFO] [stdout]   |
[INFO] [stdout] 6 | impl Solution {
[INFO] [stdout]   | ------------- associated function in this implementation
[INFO] [stdout] 7 |     pub fn find_peak_element(nums: Vec<i32>) -> i32 {
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `min_sub_array_len` is never used
[INFO] [stdout]  --> src/min_subarr_sum.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub fn min_sub_array_len(mut target: i32, mut nums: Vec<i32>) -> i32 {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: module `minLength` should have a snake case name
[INFO] [stdout]   --> src/main.rs:44:5
[INFO] [stdout]    |
[INFO] [stdout] 44 | mod minLength;
[INFO] [stdout]    |     ^^^^^^^^^ help: convert the identifier to snake case: `min_length`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: module `MakeZero` should have a snake case name
[INFO] [stdout]   --> src/main.rs:47:5
[INFO] [stdout]    |
[INFO] [stdout] 47 | mod MakeZero;
[INFO] [stdout]    |     ^^^^^^^^ help: convert the identifier to snake case: `make_zero`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.14s
[INFO] running `Command { std: "docker" "inspect" "da1eca3f2e498deb256ab12b62bd44878118845900d2793e5698058f472bf3e3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "da1eca3f2e498deb256ab12b62bd44878118845900d2793e5698058f472bf3e3", kill_on_drop: false }`
[INFO] [stdout] da1eca3f2e498deb256ab12b62bd44878118845900d2793e5698058f472bf3e3