[INFO] cloning repository https://github.com/weixinZhang12/rust_practice
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/weixinZhang12/rust_practice" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FweixinZhang12%2Frust_practice", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FweixinZhang12%2Frust_practice'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] b3032edbd680222a6155c1fd5a1ab12fa4376bd1
[INFO] building weixinZhang12/rust_practice against try#9b5e8b16bd1c4acf4cf8e6880368314cf021a987+rustflags=-Dtail-expr-drop-order for pr-134523
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FweixinZhang12%2Frust_practice" "/workspace/builds/worker-2-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/weixinZhang12/rust_practice on toolchain 9b5e8b16bd1c4acf4cf8e6880368314cf021a987
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+9b5e8b16bd1c4acf4cf8e6880368314cf021a987" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/weixinZhang12/rust_practice
[INFO] finished tweaking git repo https://github.com/weixinZhang12/rust_practice
[INFO] tweaked toml for git repo https://github.com/weixinZhang12/rust_practice written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/weixinZhang12/rust_practice 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" "+9b5e8b16bd1c4acf4cf8e6880368314cf021a987" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[ERROR] error running command: no output for 300 seconds
[INFO] building weixinZhang12/rust_practice against try#9b5e8b16bd1c4acf4cf8e6880368314cf021a987+rustflags=-Dtail-expr-drop-order for pr-134523
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FweixinZhang12%2Frust_practice" "/workspace/builds/worker-2-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/weixinZhang12/rust_practice on toolchain 9b5e8b16bd1c4acf4cf8e6880368314cf021a987
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+9b5e8b16bd1c4acf4cf8e6880368314cf021a987" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/weixinZhang12/rust_practice
[INFO] finished tweaking git repo https://github.com/weixinZhang12/rust_practice
[INFO] tweaked toml for git repo https://github.com/weixinZhang12/rust_practice written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/weixinZhang12/rust_practice 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" "+9b5e8b16bd1c4acf4cf8e6880368314cf021a987" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+9b5e8b16bd1c4acf4cf8e6880368314cf021a987" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2094293a439b94809e7066c634b52c7860257db472ddf9a823624beb5cf1046f
[INFO] running `Command { std: "docker" "start" "-a" "2094293a439b94809e7066c634b52c7860257db472ddf9a823624beb5cf1046f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2094293a439b94809e7066c634b52c7860257db472ddf9a823624beb5cf1046f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2094293a439b94809e7066c634b52c7860257db472ddf9a823624beb5cf1046f", kill_on_drop: false }`
[INFO] [stdout] 2094293a439b94809e7066c634b52c7860257db472ddf9a823624beb5cf1046f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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 -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" "+9b5e8b16bd1c4acf4cf8e6880368314cf021a987" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9859bfd7008ded5204dbaf4ccb0ebcc82001bdd2055533bb558320158040d2a4
[INFO] running `Command { std: "docker" "start" "-a" "9859bfd7008ded5204dbaf4ccb0ebcc82001bdd2055533bb558320158040d2a4", kill_on_drop: false }`
[INFO] [stderr]    Compiling lazy_static v1.5.0
[INFO] [stderr]    Compiling colored v2.1.0
[INFO] [stderr]    Compiling rust_practice v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused imports: `l20`, `l26`, `l441`, and `l70`
[INFO] [stdout]  --> src/main.rs:1:16
[INFO] [stdout]   |
[INFO] [stdout] 1 | use leetcode::{l20, l26, l268, l441, l70};
[INFO] [stdout]   |                ^^^  ^^^        ^^^^  ^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `core::num`
[INFO] [stdout]  --> src/leetcode/l283.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use core::num;
[INFO] [stdout]   |     ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `length`
[INFO] [stdout]  --> src/leetcode/l14.rs:3:9
[INFO] [stdout]   |
[INFO] [stdout] 3 |     let length=strs.len();
[INFO] [stdout]   |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_length`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `temp` is never read
[INFO] [stdout]  --> src/leetcode/l283.rs:5:13
[INFO] [stdout]   |
[INFO] [stdout] 5 |     let mut temp = 0;
[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: value assigned to `length` is never read
[INFO] [stdout]  --> src/leetcode/l7.rs:3:13
[INFO] [stdout]   |
[INFO] [stdout] 3 |     let mut length: usize = 0;
[INFO] [stdout]   |             ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]  --> src/leetcode/l69.rs:1:20
[INFO] [stdout]   |
[INFO] [stdout] 1 |     pub fn my_sqrt(x: i32) -> i32 {
[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/leetcode/l67.rs:41:9
[INFO] [stdout]    |
[INFO] [stdout] 41 |     let mut s = v.iter().map(|n| n.to_string()).collect();
[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 variable: `shang`
[INFO] [stdout]  --> src/leetcode/l168.rs:5:13
[INFO] [stdout]   |
[INFO] [stdout] 5 |     let mut shang = -1;
[INFO] [stdout]   |             ^^^^^ help: if this is intentional, prefix it with an underscore: `_shang`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `yushu` is never read
[INFO] [stdout]  --> src/leetcode/l168.rs:6:13
[INFO] [stdout]   |
[INFO] [stdout] 6 |     let mut yushu = 0;
[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/leetcode/l168.rs:5:9
[INFO] [stdout]   |
[INFO] [stdout] 5 |     let mut shang = -1;
[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/leetcode/l168.rs:19:9
[INFO] [stdout]    |
[INFO] [stdout] 19 |     let mut c:String=yushu_arr.iter().map(|&n|(n as u8 +b'A'-1) as char).collect();
[INFO] [stdout]    |         ----^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `mid` is never read
[INFO] [stdout]  --> src/leetcode/l35.rs:5:13
[INFO] [stdout]   |
[INFO] [stdout] 5 |     let mut mid: usize = 0;
[INFO] [stdout]   |             ^^^
[INFO] [stdout]   |
[INFO] [stdout]   = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]  --> src/leetcode/l118.rs:3:9
[INFO] [stdout]   |
[INFO] [stdout] 3 |     for i in 0..num_rows {
[INFO] [stdout]   |         ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `v`
[INFO] [stdout]  --> src/leetcode/l217.rs:9:18
[INFO] [stdout]   |
[INFO] [stdout] 9 |             Some(v) => return true,
[INFO] [stdout]   |                  ^ help: if this is intentional, prefix it with an underscore: `_v`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/main.rs:35:9
[INFO] [stdout]    |
[INFO] [stdout] 35 |     let mut array = vec![0,1];
[INFO] [stdout]    |         ----^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `two_nums` is never used
[INFO] [stdout]  --> src/leetcode/l1.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub fn two_nums(nums: Vec<i32>, target: i32) -> Vec<i32> {
[INFO] [stdout]   |        ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `roman_to_int` is never used
[INFO] [stdout]  --> src/leetcode/l13.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub fn roman_to_int(s: String)->i32 {
[INFO] [stdout]   |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `longest_comon_prefix` is never used
[INFO] [stdout]  --> src/leetcode/l14.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn longest_comon_prefix(strs: Vec<String>) -> String {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `is_vaild` is never used
[INFO] [stdout]  --> src/leetcode/l20.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn is_vaild(s: String) -> bool {
[INFO] [stdout]   |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `remove_duplicates` is never used
[INFO] [stdout]  --> src/leetcode/l26.rs:2:8
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub fn remove_duplicates(nums: &mut Vec<i32>) -> i32 {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `remove_element` is never used
[INFO] [stdout]  --> src/leetcode/l27.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn remove_element(nums: &mut Vec<i32>, val: i32) -> i32 {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `move_zeroes` is never used
[INFO] [stdout]  --> src/leetcode/l283.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub fn move_zeroes(nums: &mut Vec<i32>) {
[INFO] [stdout]   |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `losing_player` is never used
[INFO] [stdout]  --> src/leetcode/l3222.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn losing_player(x: i32, y: i32) -> String {
[INFO] [stdout]   |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `judge_square_sum` is never used
[INFO] [stdout]  --> src/leetcode/l633.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn judge_square_sum(c: i32) -> bool {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `reverse` is never used
[INFO] [stdout]  --> src/leetcode/l7.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn reverse(x: i32) -> i32 {
[INFO] [stdout]   |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `is_palindrome` is never used
[INFO] [stdout]  --> src/leetcode/l9.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn is_palindrome(x: i32) -> bool {
[INFO] [stdout]   |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `str_str` is never used
[INFO] [stdout]  --> src/leetcode/l28.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn str_str(haystack: String, needle: String) -> i32 {
[INFO] [stdout]   |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `length_of_last_word` is never used
[INFO] [stdout]  --> src/leetcode/l58.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn length_of_last_word(s: String) -> i32 {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `plus_one` is never used
[INFO] [stdout]  --> src/leetcode/l66.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn plus_one(digits: Vec<i32>) -> Vec<i32> {
[INFO] [stdout]   |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `my_sqrt` is never used
[INFO] [stdout]  --> src/leetcode/l69.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 |     pub fn my_sqrt(x: i32) -> i32 {
[INFO] [stdout]   |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `single_non_duplicate` is never used
[INFO] [stdout]  --> src/leetcode/l540.rs:3:12
[INFO] [stdout]   |
[INFO] [stdout] 3 |     pub fn single_non_duplicate(nums: Vec<i32>) -> i32 {
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `add_binary` is never used
[INFO] [stdout]  --> src/leetcode/l67.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn add_binary(a: String, b: String) -> String {
[INFO] [stdout]   |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `single_number` is never used
[INFO] [stdout]  --> src/leetcode/l136.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub fn single_number(nums: Vec<i32>) -> i32 {
[INFO] [stdout]   |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `convert_to_title` is never used
[INFO] [stdout]  --> src/leetcode/l168.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub fn convert_to_title(column_number: i32) -> String {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `search_insert` is never used
[INFO] [stdout]  --> src/leetcode/l35.rs:2:8
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub fn search_insert(nums: Vec<i32>, target: i32) -> i32 {
[INFO] [stdout]   |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `merge` is never used
[INFO] [stdout]  --> src/leetcode/l88.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn merge(nums1: &mut Vec<i32>, m: i32, nums2: &mut Vec<i32>, n: i32) {
[INFO] [stdout]   |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `generate` is never used
[INFO] [stdout]  --> src/leetcode/l118.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn generate(num_rows: i32) -> Vec<Vec<i32>> {
[INFO] [stdout]   |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `contains_duplicate` is never used
[INFO] [stdout]  --> src/leetcode/l217.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub fn contains_duplicate(nums: Vec<i32>) -> bool {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `word_pattern` is never used
[INFO] [stdout]  --> src/leetcode/l290.rs:5:8
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub fn word_pattern(pattern: String, s: String) -> bool {
[INFO] [stdout]   |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `third_max` is never used
[INFO] [stdout]  --> src/leetcode/l414.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub fn third_max(nums: Vec<i32>) -> i32 {
[INFO] [stdout]   |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `arrange_coins` is never used
[INFO] [stdout]  --> src/leetcode/l441.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 |     pub fn arrange_coins(n: i32) -> i32 {
[INFO] [stdout]   |            ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `L` is never used
[INFO] [stdout]  --> src/leetcode/l70.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn L(n: i32,v:& mut Vec<i32>) -> i32 {
[INFO] [stdout]   |        ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `climb_stairs` is never used
[INFO] [stdout]   --> src/leetcode/l70.rs:14:8
[INFO] [stdout]    |
[INFO] [stdout] 14 | pub fn climb_stairs(n: i32) -> i32 {
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `L` should have a snake case name
[INFO] [stdout]  --> src/leetcode/l70.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn L(n: i32,v:& mut Vec<i32>) -> i32 {
[INFO] [stdout]   |        ^ help: convert the identifier to snake case: `l`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.58s
[INFO] running `Command { std: "docker" "inspect" "9859bfd7008ded5204dbaf4ccb0ebcc82001bdd2055533bb558320158040d2a4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9859bfd7008ded5204dbaf4ccb0ebcc82001bdd2055533bb558320158040d2a4", kill_on_drop: false }`
[INFO] [stdout] 9859bfd7008ded5204dbaf4ccb0ebcc82001bdd2055533bb558320158040d2a4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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 -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" "+9b5e8b16bd1c4acf4cf8e6880368314cf021a987" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8ff85cb1ee28a0dcc7b040f5e03d4010422ab4f4084cfc9df3853c55be8fecdc
[INFO] running `Command { std: "docker" "start" "-a" "8ff85cb1ee28a0dcc7b040f5e03d4010422ab4f4084cfc9df3853c55be8fecdc", kill_on_drop: false }`
[INFO] [stderr]    Compiling rust_practice v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused imports: `l20`, `l26`, `l441`, and `l70`
[INFO] [stdout]  --> src/main.rs:1:16
[INFO] [stdout]   |
[INFO] [stdout] 1 | use leetcode::{l20, l26, l268, l441, l70};
[INFO] [stdout]   |                ^^^  ^^^        ^^^^  ^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `core::num`
[INFO] [stdout]  --> src/leetcode/l283.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use core::num;
[INFO] [stdout]   |     ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `length`
[INFO] [stdout]  --> src/leetcode/l14.rs:3:9
[INFO] [stdout]   |
[INFO] [stdout] 3 |     let length=strs.len();
[INFO] [stdout]   |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_length`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `temp` is never read
[INFO] [stdout]  --> src/leetcode/l283.rs:5:13
[INFO] [stdout]   |
[INFO] [stdout] 5 |     let mut temp = 0;
[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: value assigned to `length` is never read
[INFO] [stdout]  --> src/leetcode/l7.rs:3:13
[INFO] [stdout]   |
[INFO] [stdout] 3 |     let mut length: usize = 0;
[INFO] [stdout]   |             ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]  --> src/leetcode/l69.rs:1:20
[INFO] [stdout]   |
[INFO] [stdout] 1 |     pub fn my_sqrt(x: i32) -> i32 {
[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/leetcode/l67.rs:41:9
[INFO] [stdout]    |
[INFO] [stdout] 41 |     let mut s = v.iter().map(|n| n.to_string()).collect();
[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 variable: `shang`
[INFO] [stdout]  --> src/leetcode/l168.rs:5:13
[INFO] [stdout]   |
[INFO] [stdout] 5 |     let mut shang = -1;
[INFO] [stdout]   |             ^^^^^ help: if this is intentional, prefix it with an underscore: `_shang`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `yushu` is never read
[INFO] [stdout]  --> src/leetcode/l168.rs:6:13
[INFO] [stdout]   |
[INFO] [stdout] 6 |     let mut yushu = 0;
[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/leetcode/l168.rs:5:9
[INFO] [stdout]   |
[INFO] [stdout] 5 |     let mut shang = -1;
[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/leetcode/l168.rs:19:9
[INFO] [stdout]    |
[INFO] [stdout] 19 |     let mut c:String=yushu_arr.iter().map(|&n|(n as u8 +b'A'-1) as char).collect();
[INFO] [stdout]    |         ----^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `mid` is never read
[INFO] [stdout]  --> src/leetcode/l35.rs:5:13
[INFO] [stdout]   |
[INFO] [stdout] 5 |     let mut mid: usize = 0;
[INFO] [stdout]   |             ^^^
[INFO] [stdout]   |
[INFO] [stdout]   = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]  --> src/leetcode/l118.rs:3:9
[INFO] [stdout]   |
[INFO] [stdout] 3 |     for i in 0..num_rows {
[INFO] [stdout]   |         ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `v`
[INFO] [stdout]  --> src/leetcode/l217.rs:9:18
[INFO] [stdout]   |
[INFO] [stdout] 9 |             Some(v) => return true,
[INFO] [stdout]   |                  ^ help: if this is intentional, prefix it with an underscore: `_v`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/main.rs:35:9
[INFO] [stdout]    |
[INFO] [stdout] 35 |     let mut array = vec![0,1];
[INFO] [stdout]    |         ----^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `two_nums` is never used
[INFO] [stdout]  --> src/leetcode/l1.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub fn two_nums(nums: Vec<i32>, target: i32) -> Vec<i32> {
[INFO] [stdout]   |        ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `roman_to_int` is never used
[INFO] [stdout]  --> src/leetcode/l13.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub fn roman_to_int(s: String)->i32 {
[INFO] [stdout]   |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `longest_comon_prefix` is never used
[INFO] [stdout]  --> src/leetcode/l14.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn longest_comon_prefix(strs: Vec<String>) -> String {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `is_vaild` is never used
[INFO] [stdout]  --> src/leetcode/l20.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn is_vaild(s: String) -> bool {
[INFO] [stdout]   |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `remove_duplicates` is never used
[INFO] [stdout]  --> src/leetcode/l26.rs:2:8
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub fn remove_duplicates(nums: &mut Vec<i32>) -> i32 {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `remove_element` is never used
[INFO] [stdout]  --> src/leetcode/l27.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn remove_element(nums: &mut Vec<i32>, val: i32) -> i32 {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `move_zeroes` is never used
[INFO] [stdout]  --> src/leetcode/l283.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub fn move_zeroes(nums: &mut Vec<i32>) {
[INFO] [stdout]   |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `losing_player` is never used
[INFO] [stdout]  --> src/leetcode/l3222.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn losing_player(x: i32, y: i32) -> String {
[INFO] [stdout]   |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `judge_square_sum` is never used
[INFO] [stdout]  --> src/leetcode/l633.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn judge_square_sum(c: i32) -> bool {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `reverse` is never used
[INFO] [stdout]  --> src/leetcode/l7.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn reverse(x: i32) -> i32 {
[INFO] [stdout]   |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `is_palindrome` is never used
[INFO] [stdout]  --> src/leetcode/l9.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn is_palindrome(x: i32) -> bool {
[INFO] [stdout]   |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `str_str` is never used
[INFO] [stdout]  --> src/leetcode/l28.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn str_str(haystack: String, needle: String) -> i32 {
[INFO] [stdout]   |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `length_of_last_word` is never used
[INFO] [stdout]  --> src/leetcode/l58.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn length_of_last_word(s: String) -> i32 {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `plus_one` is never used
[INFO] [stdout]  --> src/leetcode/l66.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn plus_one(digits: Vec<i32>) -> Vec<i32> {
[INFO] [stdout]   |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `my_sqrt` is never used
[INFO] [stdout]  --> src/leetcode/l69.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 |     pub fn my_sqrt(x: i32) -> i32 {
[INFO] [stdout]   |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `single_non_duplicate` is never used
[INFO] [stdout]  --> src/leetcode/l540.rs:3:12
[INFO] [stdout]   |
[INFO] [stdout] 3 |     pub fn single_non_duplicate(nums: Vec<i32>) -> i32 {
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `add_binary` is never used
[INFO] [stdout]  --> src/leetcode/l67.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn add_binary(a: String, b: String) -> String {
[INFO] [stdout]   |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `single_number` is never used
[INFO] [stdout]  --> src/leetcode/l136.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub fn single_number(nums: Vec<i32>) -> i32 {
[INFO] [stdout]   |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `convert_to_title` is never used
[INFO] [stdout]  --> src/leetcode/l168.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub fn convert_to_title(column_number: i32) -> String {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `search_insert` is never used
[INFO] [stdout]  --> src/leetcode/l35.rs:2:8
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub fn search_insert(nums: Vec<i32>, target: i32) -> i32 {
[INFO] [stdout]   |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `merge` is never used
[INFO] [stdout]  --> src/leetcode/l88.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn merge(nums1: &mut Vec<i32>, m: i32, nums2: &mut Vec<i32>, n: i32) {
[INFO] [stdout]   |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `generate` is never used
[INFO] [stdout]  --> src/leetcode/l118.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn generate(num_rows: i32) -> Vec<Vec<i32>> {
[INFO] [stdout]   |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `contains_duplicate` is never used
[INFO] [stdout]  --> src/leetcode/l217.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub fn contains_duplicate(nums: Vec<i32>) -> bool {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `word_pattern` is never used
[INFO] [stdout]  --> src/leetcode/l290.rs:5:8
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub fn word_pattern(pattern: String, s: String) -> bool {
[INFO] [stdout]   |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `third_max` is never used
[INFO] [stdout]  --> src/leetcode/l414.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub fn third_max(nums: Vec<i32>) -> i32 {
[INFO] [stdout]   |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `arrange_coins` is never used
[INFO] [stdout]  --> src/leetcode/l441.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 |     pub fn arrange_coins(n: i32) -> i32 {
[INFO] [stdout]   |            ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `L` is never used
[INFO] [stdout]  --> src/leetcode/l70.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn L(n: i32,v:& mut Vec<i32>) -> i32 {
[INFO] [stdout]   |        ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `climb_stairs` is never used
[INFO] [stdout]   --> src/leetcode/l70.rs:14:8
[INFO] [stdout]    |
[INFO] [stdout] 14 | pub fn climb_stairs(n: i32) -> i32 {
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `L` should have a snake case name
[INFO] [stdout]  --> src/leetcode/l70.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn L(n: i32,v:& mut Vec<i32>) -> i32 {
[INFO] [stdout]   |        ^ help: convert the identifier to snake case: `l`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.19s
[INFO] running `Command { std: "docker" "inspect" "8ff85cb1ee28a0dcc7b040f5e03d4010422ab4f4084cfc9df3853c55be8fecdc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8ff85cb1ee28a0dcc7b040f5e03d4010422ab4f4084cfc9df3853c55be8fecdc", kill_on_drop: false }`
[INFO] [stdout] 8ff85cb1ee28a0dcc7b040f5e03d4010422ab4f4084cfc9df3853c55be8fecdc