[INFO] cloning repository https://github.com/limotree/MyRust1
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/limotree/MyRust1" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flimotree%2FMyRust1", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flimotree%2FMyRust1'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 6f6b3cef75c782e7ca57191a1297503e85723c37
[INFO] testing limotree/MyRust1 against beta-2022-04-10 for beta-1.61-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flimotree%2FMyRust1" "/workspace/builds/worker-59/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-59/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/limotree/MyRust1 on toolchain beta-2022-04-10
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/limotree/MyRust1
[INFO] finished tweaking git repo https://github.com/limotree/MyRust1
[INFO] tweaked toml for git repo https://github.com/limotree/MyRust1 written to /workspace/builds/worker-59/source/Cargo.toml
[INFO] crate git repo https://github.com/limotree/MyRust1 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-59/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-59/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f5751a0b4fa87715b27e7cb54650382abb09057db63a2c07ae9f650ec31bed33
[INFO] running `Command { std: "docker" "start" "-a" "f5751a0b4fa87715b27e7cb54650382abb09057db63a2c07ae9f650ec31bed33", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f5751a0b4fa87715b27e7cb54650382abb09057db63a2c07ae9f650ec31bed33", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f5751a0b4fa87715b27e7cb54650382abb09057db63a2c07ae9f650ec31bed33", kill_on_drop: false }`
[INFO] [stdout] f5751a0b4fa87715b27e7cb54650382abb09057db63a2c07ae9f650ec31bed33
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-59/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-59/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=warn" "-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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 01724957d5bbe913685521cec9f58e9dd8f289f13e660b71dd8ce6a54a998139
[INFO] running `Command { std: "docker" "start" "-a" "01724957d5bbe913685521cec9f58e9dd8f289f13e660b71dd8ce6a54a998139", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling libc v0.2.80
[INFO] [stderr]    Compiling tinyvec_macros v0.1.0
[INFO] [stderr]    Compiling log v0.4.11
[INFO] [stderr]    Compiling byteorder v1.3.4
[INFO] [stderr]    Compiling httparse v1.3.4
[INFO] [stderr]    Compiling safemem v0.3.3
[INFO] [stderr]    Compiling rustc-serialize v0.3.24
[INFO] [stderr]    Compiling lazy_static v0.2.11
[INFO] [stderr]    Compiling modifier v0.1.0
[INFO] [stderr]    Compiling itoa v0.1.1
[INFO] [stderr]    Compiling dtoa v0.2.2
[INFO] [stderr]    Compiling serde v0.8.23
[INFO] [stderr]    Compiling route-recognizer v0.1.13
[INFO] [stderr]    Compiling unsafe-any v0.4.2
[INFO] [stderr]    Compiling error v0.1.9
[INFO] [stderr]    Compiling num-traits v0.1.43
[INFO] [stderr]    Compiling tinyvec v1.1.0
[INFO] [stderr]    Compiling typemap v0.3.3
[INFO] [stderr]    Compiling plugin v0.2.6
[INFO] [stderr]    Compiling log v0.3.9
[INFO] [stderr]    Compiling mime v0.2.6
[INFO] [stderr]    Compiling base64 v0.9.3
[INFO] [stderr]    Compiling unicode-normalization v0.1.16
[INFO] [stderr]    Compiling time v0.1.44
[INFO] [stderr]    Compiling num_cpus v1.13.0
[INFO] [stderr]    Compiling rand v0.4.6
[INFO] [stderr]    Compiling idna v0.1.5
[INFO] [stderr]    Compiling serde_json v0.8.6
[INFO] [stderr]    Compiling rand v0.3.23
[INFO] [stderr]    Compiling conduit-mime-types v0.7.3
[INFO] [stderr]    Compiling url v1.7.2
[INFO] [stderr]    Compiling hyper v0.10.16
[INFO] [stderr]    Compiling iron v0.5.1
[INFO] [stderr]    Compiling persistent v0.3.0
[INFO] [stderr]    Compiling router v0.5.1
[INFO] [stderr]    Compiling bodyparser v0.5.0
[INFO] [stderr]    Compiling urlencoded v0.5.0
[INFO] [stderr]    Compiling MyRust1 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::collections::HashMap`
[INFO] [stdout]  --> src/gcd.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | 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 doc comment
[INFO] [stdout]   --> src/gcd.rs:43:9
[INFO] [stdout]    |
[INFO] [stdout] 43 |         /// 可变引用
[INFO] [stdout]    |         ^^^^^^^^^^^^
[INFO] [stdout] 44 |         let mut guess = String::new();
[INFO] [stdout]    |         ------------------------------ rustdoc does not generate documentation for statements
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_doc_comments)]` on by default
[INFO] [stdout]    = help: use `//` for a plain comment
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `iron::*`
[INFO] [stdout]  --> src/my_web.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use iron::*;
[INFO] [stdout]   |     ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `LinkedList`
[INFO] [stdout]  --> src/list.rs:1:33
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::collections::{HashMap, LinkedList};
[INFO] [stdout]   |                                 ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `gcd::command_line`
[INFO] [stdout]  --> src/main.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | use gcd::command_line;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `gcd::guess_number`
[INFO] [stdout]  --> src/main.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 | use gcd::guess_number;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `rand::Rng`
[INFO] [stdout]   --> src/main.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 | use rand::Rng;
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::cmp::Ordering`
[INFO] [stdout]   --> src/main.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 11 | use std::cmp::Ordering;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::collections::HashMap`
[INFO] [stdout]   --> src/main.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 12 | use std::collections::HashMap;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::str::FromStr`
[INFO] [stdout]   --> src/main.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 13 | use std::str::FromStr;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::time::Duration`
[INFO] [stdout]   --> src/main.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 14 | use std::time::Duration;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `io`, `thread`
[INFO] [stdout]   --> src/main.rs:15:11
[INFO] [stdout]    |
[INFO] [stdout] 15 | use std::{io, thread};
[INFO] [stdout]    |           ^^  ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `input`
[INFO] [stdout]   --> src/main.rs:23:9
[INFO] [stdout]    |
[INFO] [stdout] 23 |     let input = vec!["nail", "shoe", "horse"];
[INFO] [stdout]    |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_input`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `j`
[INFO] [stdout]   --> src/main.rs:26:9
[INFO] [stdout]    |
[INFO] [stdout] 26 |     for j in 0..100 {
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_j`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `command_line`
[INFO] [stdout]   --> src/gcd.rs:15:15
[INFO] [stdout]    |
[INFO] [stdout] 15 | pub(crate) fn command_line() {
[INFO] [stdout]    |               ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `guess_number`
[INFO] [stdout]   --> src/gcd.rs:34:15
[INFO] [stdout]    |
[INFO] [stdout] 34 | pub(crate) fn guess_number() {
[INFO] [stdout]    |               ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `gcd`
[INFO] [stdout]   --> src/gcd.rs:65:4
[INFO] [stdout]    |
[INFO] [stdout] 65 | fn gcd(mut a: u64, mut b: u64) -> u64 {
[INFO] [stdout]    |    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `ts_closure`
[INFO] [stdout]   --> src/gcd.rs:83:4
[INFO] [stdout]    |
[INFO] [stdout] 83 | fn ts_closure() {
[INFO] [stdout]    |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `th_thread`
[INFO] [stdout]   --> src/gcd.rs:92:4
[INFO] [stdout]    |
[INFO] [stdout] 92 | fn th_thread() {
[INFO] [stdout]    |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `create_vec`
[INFO] [stdout]  --> src/my_collect.rs:4:15
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub(crate) fn create_vec() {
[INFO] [stdout]   |               ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `two_sum`
[INFO] [stdout]   --> src/my_collect.rs:20:8
[INFO] [stdout]    |
[INFO] [stdout] 20 | pub fn two_sum(numbs: Vec<i32>, target: i32) -> Vec<i32> {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `square_of_sum`
[INFO] [stdout]  --> src/my_math.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn square_of_sum(n: u32) -> u32 {
[INFO] [stdout]   |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `sum_of_squares`
[INFO] [stdout]   --> src/my_math.rs:13:8
[INFO] [stdout]    |
[INFO] [stdout] 13 | pub fn sum_of_squares(n: u32) -> u32 {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `difference`
[INFO] [stdout]   --> src/my_math.rs:25:8
[INFO] [stdout]    |
[INFO] [stdout] 25 | pub fn difference(n: u32) -> u32 {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `square`
[INFO] [stdout]   --> src/my_math.rs:36:8
[INFO] [stdout]    |
[INFO] [stdout] 36 | pub fn square(s: u32) -> u64 {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `total`
[INFO] [stdout]   --> src/my_math.rs:49:8
[INFO] [stdout]    |
[INFO] [stdout] 49 | pub fn total() -> u64 {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `sum_of_multiples`
[INFO] [stdout]   --> src/my_math.rs:54:8
[INFO] [stdout]    |
[INFO] [stdout] 54 | pub fn sum_of_multiples(limit: u32, factors: &[u32]) {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `reverse`
[INFO] [stdout]  --> src/string_exam.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub fn reverse(input: &str) -> String {
[INFO] [stdout]   |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `reverseV`
[INFO] [stdout]  --> src/string_exam.rs:7:8
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub fn reverseV(input: &str) -> String {
[INFO] [stdout]   |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `is_prime`
[INFO] [stdout]   --> src/string_exam.rs:16:4
[INFO] [stdout]    |
[INFO] [stdout] 16 | fn is_prime(n: u32) -> bool {
[INFO] [stdout]    |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `nth`
[INFO] [stdout]   --> src/string_exam.rs:23:8
[INFO] [stdout]    |
[INFO] [stdout] 23 | pub fn nth(n: u32) -> u32 {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `build_proverb2`
[INFO] [stdout]   --> src/string_exam.rs:28:8
[INFO] [stdout]    |
[INFO] [stdout] 28 | pub fn build_proverb2(list: &[&str]) -> String {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `build_proverb`
[INFO] [stdout]   --> src/string_exam.rs:48:8
[INFO] [stdout]    |
[INFO] [stdout] 48 | pub fn build_proverb(list: &[&str]) -> String {
[INFO] [stdout]    |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `verse`
[INFO] [stdout]   --> src/string_exam.rs:75:8
[INFO] [stdout]    |
[INFO] [stdout] 75 | pub fn verse(n: u32) -> String {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `sing`
[INFO] [stdout]   --> src/string_exam.rs:86:8
[INFO] [stdout]    |
[INFO] [stdout] 86 | pub fn sing(start: u32, end: u32) -> String {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `bottles`
[INFO] [stdout]   --> src/string_exam.rs:93:4
[INFO] [stdout]    |
[INFO] [stdout] 93 | fn bottles(n: u32) -> &'static str {
[INFO] [stdout]    |    ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `is_empty`
[INFO] [stdout]   --> src/list.rs:25:12
[INFO] [stdout]    |
[INFO] [stdout] 25 |     pub fn is_empty(&self) -> bool {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `len`
[INFO] [stdout]   --> src/list.rs:29:12
[INFO] [stdout]    |
[INFO] [stdout] 29 |     pub fn len(&self) -> usize {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `peek`
[INFO] [stdout]   --> src/list.rs:48:12
[INFO] [stdout]    |
[INFO] [stdout] 48 |     pub fn peek(&self) -> Option<&T> {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `rev`
[INFO] [stdout]   --> src/list.rs:56:12
[INFO] [stdout]    |
[INFO] [stdout] 56 |     pub fn rev(self) -> SimpleLinkedList<T> {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `length_of_longest_substring`
[INFO] [stdout]   --> src/list.rs:87:8
[INFO] [stdout]    |
[INFO] [stdout] 87 | pub fn length_of_longest_substring(s: String) -> i32 {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `die_simulator`
[INFO] [stdout]    --> src/list.rs:104:8
[INFO] [stdout]     |
[INFO] [stdout] 104 | pub fn die_simulator(n: i32, roll_max: Vec<i32>) -> i32 {
[INFO] [stdout]     |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: crate `MyRust1` should have a snake case name
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout]   = help: convert the identifier to snake case: `my_rust1`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `myV` should have a snake case name
[INFO] [stdout]  --> src/my_collect.rs:6:13
[INFO] [stdout]   |
[INFO] [stdout] 6 |     let mut myV: Vec<i32> = Vec::new();
[INFO] [stdout]   |             ^^^ help: convert the identifier to snake case: `my_v`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `reverseV` should have a snake case name
[INFO] [stdout]  --> src/string_exam.rs:7:8
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub fn reverseV(input: &str) -> String {
[INFO] [stdout]   |        ^^^^^^^^ help: convert the identifier to snake case: `reverse_v`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `String::new` that must be used
[INFO] [stdout]  --> src/string_exam.rs:9:9
[INFO] [stdout]   |
[INFO] [stdout] 9 |         String::new();
[INFO] [stdout]   |         ^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 46 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 56.21s
[INFO] running `Command { std: "docker" "inspect" "01724957d5bbe913685521cec9f58e9dd8f289f13e660b71dd8ce6a54a998139", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "01724957d5bbe913685521cec9f58e9dd8f289f13e660b71dd8ce6a54a998139", kill_on_drop: false }`
[INFO] [stdout] 01724957d5bbe913685521cec9f58e9dd8f289f13e660b71dd8ce6a54a998139
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-59/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-59/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=warn" "-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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 19dd1f1d4c40b6002d5fd732d63c8cecfd206f046f3b5712c37d2f79eb0cc73c
[INFO] running `Command { std: "docker" "start" "-a" "19dd1f1d4c40b6002d5fd732d63c8cecfd206f046f3b5712c37d2f79eb0cc73c", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling MyRust1 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::collections::HashMap`
[INFO] [stdout]  --> src/gcd.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | 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 doc comment
[INFO] [stdout]   --> src/gcd.rs:43:9
[INFO] [stdout]    |
[INFO] [stdout] 43 |         /// 可变引用
[INFO] [stdout]    |         ^^^^^^^^^^^^
[INFO] [stdout] 44 |         let mut guess = String::new();
[INFO] [stdout]    |         ------------------------------ rustdoc does not generate documentation for statements
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_doc_comments)]` on by default
[INFO] [stdout]    = help: use `//` for a plain comment
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `iron::*`
[INFO] [stdout]  --> src/my_web.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use iron::*;
[INFO] [stdout]   |     ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `LinkedList`
[INFO] [stdout]  --> src/list.rs:1:33
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::collections::{HashMap, LinkedList};
[INFO] [stdout]   |                                 ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `gcd::command_line`
[INFO] [stdout]  --> src/main.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | use gcd::command_line;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `gcd::guess_number`
[INFO] [stdout]  --> src/main.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 | use gcd::guess_number;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `rand::Rng`
[INFO] [stdout]   --> src/main.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 | use rand::Rng;
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::cmp::Ordering`
[INFO] [stdout]   --> src/main.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 11 | use std::cmp::Ordering;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::collections::HashMap`
[INFO] [stdout]   --> src/main.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 12 | use std::collections::HashMap;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::str::FromStr`
[INFO] [stdout]   --> src/main.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 13 | use std::str::FromStr;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::time::Duration`
[INFO] [stdout]   --> src/main.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 14 | use std::time::Duration;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `io`, `thread`
[INFO] [stdout]   --> src/main.rs:15:11
[INFO] [stdout]    |
[INFO] [stdout] 15 | use std::{io, thread};
[INFO] [stdout]    |           ^^  ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `input`
[INFO] [stdout]   --> src/main.rs:23:9
[INFO] [stdout]    |
[INFO] [stdout] 23 |     let input = vec!["nail", "shoe", "horse"];
[INFO] [stdout]    |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_input`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `j`
[INFO] [stdout]   --> src/main.rs:26:9
[INFO] [stdout]    |
[INFO] [stdout] 26 |     for j in 0..100 {
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_j`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `command_line`
[INFO] [stdout]   --> src/gcd.rs:15:15
[INFO] [stdout]    |
[INFO] [stdout] 15 | pub(crate) fn command_line() {
[INFO] [stdout]    |               ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `guess_number`
[INFO] [stdout]   --> src/gcd.rs:34:15
[INFO] [stdout]    |
[INFO] [stdout] 34 | pub(crate) fn guess_number() {
[INFO] [stdout]    |               ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `ts_closure`
[INFO] [stdout]   --> src/gcd.rs:83:4
[INFO] [stdout]    |
[INFO] [stdout] 83 | fn ts_closure() {
[INFO] [stdout]    |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `th_thread`
[INFO] [stdout]   --> src/gcd.rs:92:4
[INFO] [stdout]    |
[INFO] [stdout] 92 | fn th_thread() {
[INFO] [stdout]    |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `create_vec`
[INFO] [stdout]  --> src/my_collect.rs:4:15
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub(crate) fn create_vec() {
[INFO] [stdout]   |               ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `two_sum`
[INFO] [stdout]   --> src/my_collect.rs:20:8
[INFO] [stdout]    |
[INFO] [stdout] 20 | pub fn two_sum(numbs: Vec<i32>, target: i32) -> Vec<i32> {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `square_of_sum`
[INFO] [stdout]  --> src/my_math.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn square_of_sum(n: u32) -> u32 {
[INFO] [stdout]   |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `sum_of_squares`
[INFO] [stdout]   --> src/my_math.rs:13:8
[INFO] [stdout]    |
[INFO] [stdout] 13 | pub fn sum_of_squares(n: u32) -> u32 {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `difference`
[INFO] [stdout]   --> src/my_math.rs:25:8
[INFO] [stdout]    |
[INFO] [stdout] 25 | pub fn difference(n: u32) -> u32 {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `square`
[INFO] [stdout]   --> src/my_math.rs:36:8
[INFO] [stdout]    |
[INFO] [stdout] 36 | pub fn square(s: u32) -> u64 {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `total`
[INFO] [stdout]   --> src/my_math.rs:49:8
[INFO] [stdout]    |
[INFO] [stdout] 49 | pub fn total() -> u64 {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `sum_of_multiples`
[INFO] [stdout]   --> src/my_math.rs:54:8
[INFO] [stdout]    |
[INFO] [stdout] 54 | pub fn sum_of_multiples(limit: u32, factors: &[u32]) {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `reverse`
[INFO] [stdout]  --> src/string_exam.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub fn reverse(input: &str) -> String {
[INFO] [stdout]   |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `reverseV`
[INFO] [stdout]  --> src/string_exam.rs:7:8
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub fn reverseV(input: &str) -> String {
[INFO] [stdout]   |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `is_prime`
[INFO] [stdout]   --> src/string_exam.rs:16:4
[INFO] [stdout]    |
[INFO] [stdout] 16 | fn is_prime(n: u32) -> bool {
[INFO] [stdout]    |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `nth`
[INFO] [stdout]   --> src/string_exam.rs:23:8
[INFO] [stdout]    |
[INFO] [stdout] 23 | pub fn nth(n: u32) -> u32 {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `build_proverb2`
[INFO] [stdout]   --> src/string_exam.rs:28:8
[INFO] [stdout]    |
[INFO] [stdout] 28 | pub fn build_proverb2(list: &[&str]) -> String {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `build_proverb`
[INFO] [stdout]   --> src/string_exam.rs:48:8
[INFO] [stdout]    |
[INFO] [stdout] 48 | pub fn build_proverb(list: &[&str]) -> String {
[INFO] [stdout]    |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `verse`
[INFO] [stdout]   --> src/string_exam.rs:75:8
[INFO] [stdout]    |
[INFO] [stdout] 75 | pub fn verse(n: u32) -> String {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `sing`
[INFO] [stdout]   --> src/string_exam.rs:86:8
[INFO] [stdout]    |
[INFO] [stdout] 86 | pub fn sing(start: u32, end: u32) -> String {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `bottles`
[INFO] [stdout]   --> src/string_exam.rs:93:4
[INFO] [stdout]    |
[INFO] [stdout] 93 | fn bottles(n: u32) -> &'static str {
[INFO] [stdout]    |    ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `is_empty`
[INFO] [stdout]   --> src/list.rs:25:12
[INFO] [stdout]    |
[INFO] [stdout] 25 |     pub fn is_empty(&self) -> bool {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `len`
[INFO] [stdout]   --> src/list.rs:29:12
[INFO] [stdout]    |
[INFO] [stdout] 29 |     pub fn len(&self) -> usize {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `peek`
[INFO] [stdout]   --> src/list.rs:48:12
[INFO] [stdout]    |
[INFO] [stdout] 48 |     pub fn peek(&self) -> Option<&T> {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `rev`
[INFO] [stdout]   --> src/list.rs:56:12
[INFO] [stdout]    |
[INFO] [stdout] 56 |     pub fn rev(self) -> SimpleLinkedList<T> {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `length_of_longest_substring`
[INFO] [stdout]   --> src/list.rs:87:8
[INFO] [stdout]    |
[INFO] [stdout] 87 | pub fn length_of_longest_substring(s: String) -> i32 {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `die_simulator`
[INFO] [stdout]    --> src/list.rs:104:8
[INFO] [stdout]     |
[INFO] [stdout] 104 | pub fn die_simulator(n: i32, roll_max: Vec<i32>) -> i32 {
[INFO] [stdout]     |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: crate `MyRust1` should have a snake case name
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout]   = help: convert the identifier to snake case: `my_rust1`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `myV` should have a snake case name
[INFO] [stdout]  --> src/my_collect.rs:6:13
[INFO] [stdout]   |
[INFO] [stdout] 6 |     let mut myV: Vec<i32> = Vec::new();
[INFO] [stdout]   |             ^^^ help: convert the identifier to snake case: `my_v`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `reverseV` should have a snake case name
[INFO] [stdout]  --> src/string_exam.rs:7:8
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub fn reverseV(input: &str) -> String {
[INFO] [stdout]   |        ^^^^^^^^ help: convert the identifier to snake case: `reverse_v`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `String::new` that must be used
[INFO] [stdout]  --> src/string_exam.rs:9:9
[INFO] [stdout]   |
[INFO] [stdout] 9 |         String::new();
[INFO] [stdout]   |         ^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 45 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 7.89s
[INFO] [stderr]   Executable unittests src/main.rs (/opt/rustwide/target/debug/deps/MyRust1-e9b1018553ad1c60)
[INFO] running `Command { std: "docker" "inspect" "19dd1f1d4c40b6002d5fd732d63c8cecfd206f046f3b5712c37d2f79eb0cc73c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "19dd1f1d4c40b6002d5fd732d63c8cecfd206f046f3b5712c37d2f79eb0cc73c", kill_on_drop: false }`
[INFO] [stdout] 19dd1f1d4c40b6002d5fd732d63c8cecfd206f046f3b5712c37d2f79eb0cc73c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-59/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-59/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=warn" "-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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 30386e5ec4610fbbd96520b99d7ff2024f3d32f67389a102e7eb530f351537ca
[INFO] running `Command { std: "docker" "start" "-a" "30386e5ec4610fbbd96520b99d7ff2024f3d32f67389a102e7eb530f351537ca", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr] warning: unused import: `std::collections::HashMap`
[INFO] [stderr]  --> src/gcd.rs:6:5
[INFO] [stderr]   |
[INFO] [stderr] 6 | use std::collections::HashMap;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused doc comment
[INFO] [stderr]   --> src/gcd.rs:43:9
[INFO] [stderr]    |
[INFO] [stderr] 43 |         /// 可变引用
[INFO] [stderr]    |         ^^^^^^^^^^^^
[INFO] [stderr] 44 |         let mut guess = String::new();
[INFO] [stderr]    |         ------------------------------ rustdoc does not generate documentation for statements
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_doc_comments)]` on by default
[INFO] [stderr]    = help: use `//` for a plain comment
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `iron::*`
[INFO] [stderr]  --> src/my_web.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use iron::*;
[INFO] [stderr]   |     ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `LinkedList`
[INFO] [stderr]  --> src/list.rs:1:33
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::collections::{HashMap, LinkedList};
[INFO] [stderr]   |                                 ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `gcd::command_line`
[INFO] [stderr]  --> src/main.rs:8:5
[INFO] [stderr]   |
[INFO] [stderr] 8 | use gcd::command_line;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `gcd::guess_number`
[INFO] [stderr]  --> src/main.rs:9:5
[INFO] [stderr]   |
[INFO] [stderr] 9 | use gcd::guess_number;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `rand::Rng`
[INFO] [stderr]   --> src/main.rs:10:5
[INFO] [stderr]    |
[INFO] [stderr] 10 | use rand::Rng;
[INFO] [stderr]    |     ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::cmp::Ordering`
[INFO] [stderr]   --> src/main.rs:11:5
[INFO] [stderr]    |
[INFO] [stderr] 11 | use std::cmp::Ordering;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::collections::HashMap`
[INFO] [stderr]   --> src/main.rs:12:5
[INFO] [stderr]    |
[INFO] [stderr] 12 | use std::collections::HashMap;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::str::FromStr`
[INFO] [stderr]   --> src/main.rs:13:5
[INFO] [stderr]    |
[INFO] [stderr] 13 | use std::str::FromStr;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::time::Duration`
[INFO] [stderr]   --> src/main.rs:14:5
[INFO] [stderr]    |
[INFO] [stderr] 14 | use std::time::Duration;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `io`, `thread`
[INFO] [stderr]   --> src/main.rs:15:11
[INFO] [stderr]    |
[INFO] [stderr] 15 | use std::{io, thread};
[INFO] [stderr]    |           ^^  ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `input`
[INFO] [stderr]   --> src/main.rs:23:9
[INFO] [stderr]    |
[INFO] [stderr] 23 |     let input = vec!["nail", "shoe", "horse"];
[INFO] [stderr]    |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_input`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `j`
[INFO] [stderr]   --> src/main.rs:26:9
[INFO] [stderr]    |
[INFO] [stderr] 26 |     for j in 0..100 {
[INFO] [stderr]    |         ^ help: if this is intentional, prefix it with an underscore: `_j`
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `command_line`
[INFO] [stderr]   --> src/gcd.rs:15:15
[INFO] [stderr]    |
[INFO] [stderr] 15 | pub(crate) fn command_line() {
[INFO] [stderr]    |               ^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `guess_number`
[INFO] [stderr]   --> src/gcd.rs:34:15
[INFO] [stderr]    |
[INFO] [stderr] 34 | pub(crate) fn guess_number() {
[INFO] [stderr]    |               ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `ts_closure`
[INFO] [stderr]   --> src/gcd.rs:83:4
[INFO] [stderr]    |
[INFO] [stderr] 83 | fn ts_closure() {
[INFO] [stderr]    |    ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `th_thread`
[INFO] [stderr]   --> src/gcd.rs:92:4
[INFO] [stderr]    |
[INFO] [stderr] 92 | fn th_thread() {
[INFO] [stderr]    |    ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `create_vec`
[INFO] [stderr]  --> src/my_collect.rs:4:15
[INFO] [stderr]   |
[INFO] [stderr] 4 | pub(crate) fn create_vec() {
[INFO] [stderr]   |               ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `two_sum`
[INFO] [stderr]   --> src/my_collect.rs:20:8
[INFO] [stderr]    |
[INFO] [stderr] 20 | pub fn two_sum(numbs: Vec<i32>, target: i32) -> Vec<i32> {
[INFO] [stderr]    |        ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `square_of_sum`
[INFO] [stderr]  --> src/my_math.rs:1:8
[INFO] [stderr]   |
[INFO] [stderr] 1 | pub fn square_of_sum(n: u32) -> u32 {
[INFO] [stderr]   |        ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `sum_of_squares`
[INFO] [stderr]   --> src/my_math.rs:13:8
[INFO] [stderr]    |
[INFO] [stderr] 13 | pub fn sum_of_squares(n: u32) -> u32 {
[INFO] [stderr]    |        ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `difference`
[INFO] [stderr]   --> src/my_math.rs:25:8
[INFO] [stderr]    |
[INFO] [stderr] 25 | pub fn difference(n: u32) -> u32 {
[INFO] [stderr]    |        ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `square`
[INFO] [stderr]   --> src/my_math.rs:36:8
[INFO] [stderr]    |
[INFO] [stderr] 36 | pub fn square(s: u32) -> u64 {
[INFO] [stderr]    |        ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `total`
[INFO] [stderr]   --> src/my_math.rs:49:8
[INFO] [stderr]    |
[INFO] [stderr] 49 | pub fn total() -> u64 {
[INFO] [stderr]    |        ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `sum_of_multiples`
[INFO] [stderr]   --> src/my_math.rs:54:8
[INFO] [stderr]    |
[INFO] [stderr] 54 | pub fn sum_of_multiples(limit: u32, factors: &[u32]) {
[INFO] [stderr]    |        ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `reverse`
[INFO] [stderr]  --> src/string_exam.rs:3:8
[INFO] [stderr]   |
[INFO] [stderr] 3 | pub fn reverse(input: &str) -> String {
[INFO] [stderr]   |        ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `reverseV`
[INFO] [stderr]  --> src/string_exam.rs:7:8
[INFO] [stderr]   |
[INFO] [stderr] 7 | pub fn reverseV(input: &str) -> String {
[INFO] [stderr]   |        ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `is_prime`
[INFO] [stderr]   --> src/string_exam.rs:16:4
[INFO] [stderr]    |
[INFO] [stderr] 16 | fn is_prime(n: u32) -> bool {
[INFO] [stderr]    |    ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `nth`
[INFO] [stderr]   --> src/string_exam.rs:23:8
[INFO] [stderr]    |
[INFO] [stderr] 23 | pub fn nth(n: u32) -> u32 {
[INFO] [stderr]    |        ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `build_proverb2`
[INFO] [stderr]   --> src/string_exam.rs:28:8
[INFO] [stderr]    |
[INFO] [stderr] 28 | pub fn build_proverb2(list: &[&str]) -> String {
[INFO] [stderr]    |        ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `build_proverb`
[INFO] [stderr]   --> src/string_exam.rs:48:8
[INFO] [stderr]    |
[INFO] [stderr] 48 | pub fn build_proverb(list: &[&str]) -> String {
[INFO] [stderr]    |        ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `verse`
[INFO] [stderr]   --> src/string_exam.rs:75:8
[INFO] [stderr]    |
[INFO] [stderr] 75 | pub fn verse(n: u32) -> String {
[INFO] [stderr]    |        ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `sing`
[INFO] [stderr]   --> src/string_exam.rs:86:8
[INFO] [stderr]    |
[INFO] [stderr] 86 | pub fn sing(start: u32, end: u32) -> String {
[INFO] [stderr]    |        ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `bottles`
[INFO] [stderr]   --> src/string_exam.rs:93:4
[INFO] [stderr]    |
[INFO] [stderr] 93 | fn bottles(n: u32) -> &'static str {
[INFO] [stderr]    |    ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `is_empty`
[INFO] [stderr]   --> src/list.rs:25:12
[INFO] [stderr]    |
[INFO] [stderr] 25 |     pub fn is_empty(&self) -> bool {
[INFO] [stderr]    |            ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `len`
[INFO] [stderr]   --> src/list.rs:29:12
[INFO] [stderr]    |
[INFO] [stderr] 29 |     pub fn len(&self) -> usize {
[INFO] [stderr]    |            ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `peek`
[INFO] [stderr]   --> src/list.rs:48:12
[INFO] [stderr]    |
[INFO] [stderr] 48 |     pub fn peek(&self) -> Option<&T> {
[INFO] [stderr]    |            ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `rev`
[INFO] [stderr]   --> src/list.rs:56:12
[INFO] [stderr]    |
[INFO] [stderr] 56 |     pub fn rev(self) -> SimpleLinkedList<T> {
[INFO] [stderr]    |            ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `length_of_longest_substring`
[INFO] [stderr]   --> src/list.rs:87:8
[INFO] [stderr]    |
[INFO] [stderr] 87 | pub fn length_of_longest_substring(s: String) -> i32 {
[INFO] [stderr]    |        ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `die_simulator`
[INFO] [stderr]    --> src/list.rs:104:8
[INFO] [stderr]     |
[INFO] [stderr] 104 | pub fn die_simulator(n: i32, roll_max: Vec<i32>) -> i32 {
[INFO] [stderr]     |        ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: crate `MyRust1` should have a snake case name
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(non_snake_case)]` on by default
[INFO] [stderr]   = help: convert the identifier to snake case: `my_rust1`
[INFO] [stderr] 
[INFO] [stderr] warning: variable `myV` should have a snake case name
[INFO] [stderr]  --> src/my_collect.rs:6:13
[INFO] [stderr]   |
[INFO] [stderr] 6 |     let mut myV: Vec<i32> = Vec::new();
[INFO] [stderr]   |             ^^^ help: convert the identifier to snake case: `my_v`
[INFO] [stderr] 
[INFO] [stderr] warning: function `reverseV` should have a snake case name
[INFO] [stderr]  --> src/string_exam.rs:7:8
[INFO] [stderr]   |
[INFO] [stderr] 7 | pub fn reverseV(input: &str) -> String {
[INFO] [stderr]   |        ^^^^^^^^ help: convert the identifier to snake case: `reverse_v`
[INFO] [stderr] 
[INFO] [stderr] warning: unused return value of `String::new` that must be used
[INFO] [stderr]  --> src/string_exam.rs:9:9
[INFO] [stderr]   |
[INFO] [stderr] 9 |         String::new();
[INFO] [stderr]   |         ^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `MyRust1` (bin "MyRust1" test) generated 45 warnings
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.32s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/MyRust1-e9b1018553ad1c60)
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test gcd::test_gcd ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.03s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "30386e5ec4610fbbd96520b99d7ff2024f3d32f67389a102e7eb530f351537ca", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "30386e5ec4610fbbd96520b99d7ff2024f3d32f67389a102e7eb530f351537ca", kill_on_drop: false }`
[INFO] [stdout] 30386e5ec4610fbbd96520b99d7ff2024f3d32f67389a102e7eb530f351537ca