[INFO] cloning repository https://github.com/VbiosWen/rust_demo
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/VbiosWen/rust_demo" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FVbiosWen%2Frust_demo", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FVbiosWen%2Frust_demo'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] c3438daf9f8763281d00b56c551986eb33b63aa7
[INFO] testing VbiosWen/rust_demo against 1.59.0 for beta-1.60-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FVbiosWen%2Frust_demo" "/workspace/builds/worker-9/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-9/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/VbiosWen/rust_demo on toolchain 1.59.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.59.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/VbiosWen/rust_demo
[INFO] finished tweaking git repo https://github.com/VbiosWen/rust_demo
[INFO] tweaked toml for git repo https://github.com/VbiosWen/rust_demo written to /workspace/builds/worker-9/source/Cargo.toml
[INFO] crate git repo https://github.com/VbiosWen/rust_demo already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.59.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] c3fe6e9d93e91574af07d5470a197ae47ba51b132ba70ab54ec9203c0b6cd729
[INFO] running `Command { std: "docker" "start" "-a" "c3fe6e9d93e91574af07d5470a197ae47ba51b132ba70ab54ec9203c0b6cd729", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c3fe6e9d93e91574af07d5470a197ae47ba51b132ba70ab54ec9203c0b6cd729", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c3fe6e9d93e91574af07d5470a197ae47ba51b132ba70ab54ec9203c0b6cd729", kill_on_drop: false }`
[INFO] [stdout] c3fe6e9d93e91574af07d5470a197ae47ba51b132ba70ab54ec9203c0b6cd729
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] cc5c666244b012c6977c051fa8da1fc7a68598e0fa0d6670ad983d1a38a62dd2
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "cc5c666244b012c6977c051fa8da1fc7a68598e0fa0d6670ad983d1a38a62dd2", kill_on_drop: false }`
[INFO] [stderr]    Compiling rust_demo v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `crate::front_of_house::hosting`
[INFO] [stdout]   --> src/lib.rs:17:5
[INFO] [stdout]    |
[INFO] [stdout] 17 | use crate::front_of_house::hosting;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::collections::HashMap`
[INFO] [stdout]   --> src/lib.rs:18:5
[INFO] [stdout]    |
[INFO] [stdout] 18 | use std::collections::HashMap;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::io`
[INFO] [stdout]   --> src/lib.rs:22:5
[INFO] [stdout]    |
[INFO] [stdout] 22 | use std::io;
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `seat_at_table`
[INFO] [stdout]  --> src/lib.rs:5:16
[INFO] [stdout]   |
[INFO] [stdout] 5 |         pub fn seat_at_table() {}
[INFO] [stdout]   |                ^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `take_order`
[INFO] [stdout]  --> src/lib.rs:9:12
[INFO] [stdout]   |
[INFO] [stdout] 9 |         fn take_order() {}
[INFO] [stdout]   |            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `server_order`
[INFO] [stdout]   --> src/lib.rs:11:12
[INFO] [stdout]    |
[INFO] [stdout] 11 |         fn server_order() {}
[INFO] [stdout]    |            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `take_payment`
[INFO] [stdout]   --> src/lib.rs:13:12
[INFO] [stdout]    |
[INFO] [stdout] 13 |         fn take_payment() {}
[INFO] [stdout]    |            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `function1`
[INFO] [stdout]   --> src/lib.rs:26:4
[INFO] [stdout]    |
[INFO] [stdout] 26 | fn function1() -> fmt::Result {
[INFO] [stdout]    |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `function2`
[INFO] [stdout]   --> src/lib.rs:30:4
[INFO] [stdout]    |
[INFO] [stdout] 30 | fn function2() -> fmt::Result {
[INFO] [stdout]    |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 9 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum is never used: `Coin`
[INFO] [stdout]  --> src/bin/match.rs:1:6
[INFO] [stdout]   |
[INFO] [stdout] 1 | enum Coin {
[INFO] [stdout]   |      ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `value_in_cents`
[INFO] [stdout]  --> src/bin/match.rs:8:4
[INFO] [stdout]   |
[INFO] [stdout] 8 | fn value_in_cents(coin: Coin) -> u8 {
[INFO] [stdout]   |    ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `plus_one`
[INFO] [stdout]   --> src/bin/match.rs:17:4
[INFO] [stdout]    |
[INFO] [stdout] 17 | fn plus_one(x: Option<i32>) -> Option<i32> {
[INFO] [stdout]    |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `args`
[INFO] [stdout]   --> src/bin/env_demo.rs:12:9
[INFO] [stdout]    |
[INFO] [stdout] 12 |     let args: Vec<String> = env::args().collect();
[INFO] [stdout]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_args`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `list`
[INFO] [stdout]   --> src/bin/env_demo.rs:17:9
[INFO] [stdout]    |
[INFO] [stdout] 17 |     let list = Cons(1,
[INFO] [stdout]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_list`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::env::VarError`
[INFO] [stdout]  --> src/bin/ver_demo.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::env::VarError;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `summary` should have an upper camel case name
[INFO] [stdout]  --> src/bin/trait_deomo.rs:1:11
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub trait summary {
[INFO] [stdout]   |           ^^^^^^^ help: convert the identifier to upper camel case (notice the capitalization): `Summary`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(non_camel_case_types)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::IpAddrKind::IPV6`
[INFO] [stdout]  --> src/bin/enum.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use crate::IpAddrKind::IPV6;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `third`
[INFO] [stdout]  --> src/bin/ver_demo.rs:9:9
[INFO] [stdout]   |
[INFO] [stdout] 9 |     let third = v[2];
[INFO] [stdout]   |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_third`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `scoresMap`
[INFO] [stdout]   --> src/bin/ver_demo.rs:36:9
[INFO] [stdout]    |
[INFO] [stdout] 36 |     let scoresMap:HashMap<_,_> = teams.iter().zip(initial_scores).collect();
[INFO] [stdout]    |         ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_scoresMap`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `scoresMap` should have a snake case name
[INFO] [stdout]   --> src/bin/ver_demo.rs:36:9
[INFO] [stdout]    |
[INFO] [stdout] 36 |     let scoresMap:HashMap<_,_> = teams.iter().zip(initial_scores).collect();
[INFO] [stdout]    |         ^^^^^^^^^ help: convert the identifier to snake case: `scores_map`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `read`
[INFO] [stdout]  --> src/bin/panic_demo.rs:1:21
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::fs::{File, read};
[INFO] [stdout]   |                     ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `content`
[INFO] [stdout]  --> src/bin/trait_deomo.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 |     content: String,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `f`
[INFO] [stdout]   --> src/bin/panic_demo.rs:12:9
[INFO] [stdout]    |
[INFO] [stdout] 12 |     let f = match f {
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_f`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `ip_type`
[INFO] [stdout]   --> src/bin/enum.rs:27:10
[INFO] [stdout]    |
[INFO] [stdout] 27 | fn route(ip_type: IpAddrKind) {}
[INFO] [stdout]    |          ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_ip_type`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `four`
[INFO] [stdout]   --> src/bin/enum.rs:30:9
[INFO] [stdout]    |
[INFO] [stdout] 30 |     let four = IpAddrKind::IPV4;
[INFO] [stdout]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_four`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `six`
[INFO] [stdout]   --> src/bin/enum.rs:31:9
[INFO] [stdout]    |
[INFO] [stdout] 31 |     let six = IpAddrKind::IPV6;
[INFO] [stdout]    |         ^^^ help: if this is intentional, prefix it with an underscore: `_six`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `home`
[INFO] [stdout]   --> src/bin/enum.rs:33:9
[INFO] [stdout]    |
[INFO] [stdout] 33 |     let home = IpAddr {
[INFO] [stdout]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_home`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `loopBack`
[INFO] [stdout]   --> src/bin/enum.rs:37:9
[INFO] [stdout]    |
[INFO] [stdout] 37 |     let loopBack = IpAddr {
[INFO] [stdout]    |         ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_loopBack`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: structure field `headLine` should have a snake case name
[INFO] [stdout]  --> src/bin/trait_deomo.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 |     headLine: String,
[INFO] [stdout]   |     ^^^^^^^^ help: convert the identifier to snake case: `head_line`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `read_username_from_file1`
[INFO] [stdout]   --> src/bin/panic_demo.rs:31:4
[INFO] [stdout]    |
[INFO] [stdout] 31 | fn read_username_from_file1() -> Result<String, io::Error> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `kind`
[INFO] [stdout]  --> src/bin/enum.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 |     kind: IpAddrKind,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `address`
[INFO] [stdout]   --> src/bin/enum.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 |     address: String,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Quit`
[INFO] [stdout]   --> src/bin/enum.rs:15:5
[INFO] [stdout]    |
[INFO] [stdout] 15 |     Quit,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Move`
[INFO] [stdout]   --> src/bin/enum.rs:16:5
[INFO] [stdout]    |
[INFO] [stdout] 16 |     Move { x: i32, y: i32 },
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `ChangeColor`
[INFO] [stdout]   --> src/bin/enum.rs:18:5
[INFO] [stdout]    |
[INFO] [stdout] 18 |     ChangeColor(i32, i32, i32),
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `route`
[INFO] [stdout]   --> src/bin/enum.rs:27:4
[INFO] [stdout]    |
[INFO] [stdout] 27 | fn route(ip_type: IpAddrKind) {}
[INFO] [stdout]    |    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `loopBack` should have a snake case name
[INFO] [stdout]   --> src/bin/enum.rs:37:9
[INFO] [stdout]    |
[INFO] [stdout] 37 |     let loopBack = IpAddr {
[INFO] [stdout]    |         ^^^^^^^^ help: convert the identifier to snake case: `loop_back`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `email`
[INFO] [stdout]  --> src/bin/struct.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 |     email: String,
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `build_user`
[INFO] [stdout]  --> src/bin/struct.rs:9:4
[INFO] [stdout]   |
[INFO] [stdout] 9 | fn build_user(email: String, username: String) -> User {
[INFO] [stdout]   |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `area`
[INFO] [stdout]   --> src/bin/struct.rs:19:8
[INFO] [stdout]    |
[INFO] [stdout] 19 |     fn area(&mut self) {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `active_check`
[INFO] [stdout]   --> src/bin/struct.rs:23:8
[INFO] [stdout]    |
[INFO] [stdout] 23 |     fn active_check(&self) -> &str {
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `name`
[INFO] [stdout]  --> src/bin/person.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 |     name: String,
[INFO] [stdout]   |     ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `say_hello`
[INFO] [stdout]   --> src/bin/person.rs:16:12
[INFO] [stdout]    |
[INFO] [stdout] 16 |     pub fn say_hello(&self) {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `main`
[INFO] [stdout]   --> src/bin/person.rs:21:4
[INFO] [stdout]    |
[INFO] [stdout] 21 | fn main() {
[INFO] [stdout]    |    ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `main`
[INFO] [stdout]  --> src/bin/refrence.rs:1:4
[INFO] [stdout]   |
[INFO] [stdout] 1 | fn main() {
[INFO] [stdout]   |    ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `first_word`
[INFO] [stdout]   --> src/bin/refrence.rs:20:4
[INFO] [stdout]    |
[INFO] [stdout] 20 | fn first_word(str: &str) -> &str {
[INFO] [stdout]    |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `first_word_index`
[INFO] [stdout]   --> src/bin/refrence.rs:30:4
[INFO] [stdout]    |
[INFO] [stdout] 30 | fn first_word_index(str: &String) -> usize {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `calculate_len`
[INFO] [stdout]   --> src/bin/refrence.rs:40:8
[INFO] [stdout]    |
[INFO] [stdout] 40 | pub fn calculate_len(str: &String) -> usize {
[INFO] [stdout]    |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 13 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4.44s
[INFO] running `Command { std: "docker" "inspect" "cc5c666244b012c6977c051fa8da1fc7a68598e0fa0d6670ad983d1a38a62dd2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cc5c666244b012c6977c051fa8da1fc7a68598e0fa0d6670ad983d1a38a62dd2", kill_on_drop: false }`
[INFO] [stdout] cc5c666244b012c6977c051fa8da1fc7a68598e0fa0d6670ad983d1a38a62dd2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1b3a41a42f2aa68ac9a0604586e492e339881713cdc0bfb164026b8308388a67
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "1b3a41a42f2aa68ac9a0604586e492e339881713cdc0bfb164026b8308388a67", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stdout] warning: unused import: `crate::front_of_house::hosting`
[INFO] [stdout]   --> src/lib.rs:17:5
[INFO] [stdout]    |
[INFO] [stdout] 17 | use crate::front_of_house::hosting;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::collections::HashMap`
[INFO] [stdout]   --> src/lib.rs:18:5
[INFO] [stdout]    |
[INFO] [stdout] 18 | use std::collections::HashMap;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::io`
[INFO] [stdout]   --> src/lib.rs:22:5
[INFO] [stdout]    |
[INFO] [stdout] 22 | use std::io;
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `seat_at_table`
[INFO] [stdout]  --> src/lib.rs:5:16
[INFO] [stdout]   |
[INFO] [stdout] 5 |         pub fn seat_at_table() {}
[INFO] [stdout]   |                ^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `take_order`
[INFO] [stdout]  --> src/lib.rs:9:12
[INFO] [stdout]   |
[INFO] [stdout] 9 |         fn take_order() {}
[INFO] [stdout]   |            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `server_order`
[INFO] [stdout]   --> src/lib.rs:11:12
[INFO] [stdout]    |
[INFO] [stdout] 11 |         fn server_order() {}
[INFO] [stdout]    |            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `take_payment`
[INFO] [stdout]   --> src/lib.rs:13:12
[INFO] [stdout]    |
[INFO] [stdout] 13 |         fn take_payment() {}
[INFO] [stdout]    |            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `function1`
[INFO] [stdout]   --> src/lib.rs:26:4
[INFO] [stdout]    |
[INFO] [stdout] 26 | fn function1() -> fmt::Result {
[INFO] [stdout]    |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `function2`
[INFO] [stdout]   --> src/lib.rs:30:4
[INFO] [stdout]    |
[INFO] [stdout] 30 | fn function2() -> fmt::Result {
[INFO] [stdout]    |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 9 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling rust_demo v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::env::VarError`
[INFO] [stdout]  --> src/bin/ver_demo.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::env::VarError;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `third`
[INFO] [stdout]  --> src/bin/ver_demo.rs:9:9
[INFO] [stdout]   |
[INFO] [stdout] 9 |     let third = v[2];
[INFO] [stdout]   |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_third`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `scoresMap`
[INFO] [stdout]   --> src/bin/ver_demo.rs:36:9
[INFO] [stdout]    |
[INFO] [stdout] 36 |     let scoresMap:HashMap<_,_> = teams.iter().zip(initial_scores).collect();
[INFO] [stdout]    |         ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_scoresMap`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `scoresMap` should have a snake case name
[INFO] [stdout]   --> src/bin/ver_demo.rs:36:9
[INFO] [stdout]    |
[INFO] [stdout] 36 |     let scoresMap:HashMap<_,_> = teams.iter().zip(initial_scores).collect();
[INFO] [stdout]    |         ^^^^^^^^^ help: convert the identifier to snake case: `scores_map`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `email`
[INFO] [stdout]  --> src/bin/struct.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 |     email: String,
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `build_user`
[INFO] [stdout]  --> src/bin/struct.rs:9:4
[INFO] [stdout]   |
[INFO] [stdout] 9 | fn build_user(email: String, username: String) -> User {
[INFO] [stdout]   |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `area`
[INFO] [stdout]   --> src/bin/struct.rs:19:8
[INFO] [stdout]    |
[INFO] [stdout] 19 |     fn area(&mut self) {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `active_check`
[INFO] [stdout]   --> src/bin/struct.rs:23:8
[INFO] [stdout]    |
[INFO] [stdout] 23 |     fn active_check(&self) -> &str {
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::front_of_house::hosting`
[INFO] [stdout]   --> src/lib.rs:17:5
[INFO] [stdout]    |
[INFO] [stdout] 17 | use crate::front_of_house::hosting;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::collections::HashMap`
[INFO] [stdout]   --> src/lib.rs:18:5
[INFO] [stdout]    |
[INFO] [stdout] 18 | use std::collections::HashMap;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::io`
[INFO] [stdout]   --> src/lib.rs:22:5
[INFO] [stdout]    |
[INFO] [stdout] 22 | use std::io;
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `seat_at_table`
[INFO] [stdout]  --> src/lib.rs:5:16
[INFO] [stdout]   |
[INFO] [stdout] 5 |         pub fn seat_at_table() {}
[INFO] [stdout]   |                ^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `take_order`
[INFO] [stdout]  --> src/lib.rs:9:12
[INFO] [stdout]   |
[INFO] [stdout] 9 |         fn take_order() {}
[INFO] [stdout]   |            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `server_order`
[INFO] [stdout]   --> src/lib.rs:11:12
[INFO] [stdout]    |
[INFO] [stdout] 11 |         fn server_order() {}
[INFO] [stdout]    |            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `take_payment`
[INFO] [stdout]   --> src/lib.rs:13:12
[INFO] [stdout]    |
[INFO] [stdout] 13 |         fn take_payment() {}
[INFO] [stdout]    |            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `function1`
[INFO] [stdout]   --> src/lib.rs:26:4
[INFO] [stdout]    |
[INFO] [stdout] 26 | fn function1() -> fmt::Result {
[INFO] [stdout]    |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `function2`
[INFO] [stdout]   --> src/lib.rs:30:4
[INFO] [stdout]    |
[INFO] [stdout] 30 | fn function2() -> fmt::Result {
[INFO] [stdout]    |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `read`
[INFO] [stdout]  --> src/bin/panic_demo.rs:1:21
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::fs::{File, read};
[INFO] [stdout]   |                     ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `args`
[INFO] [stdout]   --> src/bin/env_demo.rs:12:9
[INFO] [stdout]    |
[INFO] [stdout] 12 |     let args: Vec<String> = env::args().collect();
[INFO] [stdout]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_args`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `list`
[INFO] [stdout]   --> src/bin/env_demo.rs:17:9
[INFO] [stdout]    |
[INFO] [stdout] 17 |     let list = Cons(1,
[INFO] [stdout]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_list`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `summary` should have an upper camel case name
[INFO] [stdout]  --> src/bin/trait_deomo.rs:1:11
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub trait summary {
[INFO] [stdout]   |           ^^^^^^^ help: convert the identifier to upper camel case (notice the capitalization): `Summary`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(non_camel_case_types)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `f`
[INFO] [stdout]   --> src/bin/panic_demo.rs:12:9
[INFO] [stdout]    |
[INFO] [stdout] 12 |     let f = match f {
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_f`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `name`
[INFO] [stdout]  --> src/bin/person.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 |     name: String,
[INFO] [stdout]   |     ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `say_hello`
[INFO] [stdout]   --> src/bin/person.rs:16:12
[INFO] [stdout]    |
[INFO] [stdout] 16 |     pub fn say_hello(&self) {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `main`
[INFO] [stdout]   --> src/bin/person.rs:21:4
[INFO] [stdout]    |
[INFO] [stdout] 21 | fn main() {
[INFO] [stdout]    |    ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `main`
[INFO] [stdout]  --> src/bin/refrence.rs:1:4
[INFO] [stdout]   |
[INFO] [stdout] 1 | fn main() {
[INFO] [stdout]   |    ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `first_word`
[INFO] [stdout]   --> src/bin/refrence.rs:20:4
[INFO] [stdout]    |
[INFO] [stdout] 20 | fn first_word(str: &str) -> &str {
[INFO] [stdout]    |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `first_word_index`
[INFO] [stdout]   --> src/bin/refrence.rs:30:4
[INFO] [stdout]    |
[INFO] [stdout] 30 | fn first_word_index(str: &String) -> usize {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `calculate_len`
[INFO] [stdout]   --> src/bin/refrence.rs:40:8
[INFO] [stdout]    |
[INFO] [stdout] 40 | pub fn calculate_len(str: &String) -> usize {
[INFO] [stdout]    |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `content`
[INFO] [stdout]  --> src/bin/trait_deomo.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 |     content: String,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: structure field `headLine` should have a snake case name
[INFO] [stdout]  --> src/bin/trait_deomo.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 |     headLine: String,
[INFO] [stdout]   |     ^^^^^^^^ help: convert the identifier to snake case: `head_line`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `read_username_from_file1`
[INFO] [stdout]   --> src/bin/panic_demo.rs:31:4
[INFO] [stdout]    |
[INFO] [stdout] 31 | fn read_username_from_file1() -> Result<String, io::Error> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum is never used: `Coin`
[INFO] [stdout]  --> src/bin/match.rs:1:6
[INFO] [stdout]   |
[INFO] [stdout] 1 | enum Coin {
[INFO] [stdout]   |      ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `value_in_cents`
[INFO] [stdout]  --> src/bin/match.rs:8:4
[INFO] [stdout]   |
[INFO] [stdout] 8 | fn value_in_cents(coin: Coin) -> u8 {
[INFO] [stdout]   |    ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `plus_one`
[INFO] [stdout]   --> src/bin/match.rs:17:4
[INFO] [stdout]    |
[INFO] [stdout] 17 | fn plus_one(x: Option<i32>) -> Option<i32> {
[INFO] [stdout]    |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::IpAddrKind::IPV6`
[INFO] [stdout]  --> src/bin/enum.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use crate::IpAddrKind::IPV6;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `ip_type`
[INFO] [stdout]   --> src/bin/enum.rs:27:10
[INFO] [stdout]    |
[INFO] [stdout] 27 | fn route(ip_type: IpAddrKind) {}
[INFO] [stdout]    |          ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_ip_type`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `four`
[INFO] [stdout]   --> src/bin/enum.rs:30:9
[INFO] [stdout]    |
[INFO] [stdout] 30 |     let four = IpAddrKind::IPV4;
[INFO] [stdout]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_four`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `six`
[INFO] [stdout]   --> src/bin/enum.rs:31:9
[INFO] [stdout]    |
[INFO] [stdout] 31 |     let six = IpAddrKind::IPV6;
[INFO] [stdout]    |         ^^^ help: if this is intentional, prefix it with an underscore: `_six`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `home`
[INFO] [stdout]   --> src/bin/enum.rs:33:9
[INFO] [stdout]    |
[INFO] [stdout] 33 |     let home = IpAddr {
[INFO] [stdout]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_home`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `loopBack`
[INFO] [stdout]   --> src/bin/enum.rs:37:9
[INFO] [stdout]    |
[INFO] [stdout] 37 |     let loopBack = IpAddr {
[INFO] [stdout]    |         ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_loopBack`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `kind`
[INFO] [stdout]  --> src/bin/enum.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 |     kind: IpAddrKind,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `address`
[INFO] [stdout]   --> src/bin/enum.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 |     address: String,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Quit`
[INFO] [stdout]   --> src/bin/enum.rs:15:5
[INFO] [stdout]    |
[INFO] [stdout] 15 |     Quit,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Move`
[INFO] [stdout]   --> src/bin/enum.rs:16:5
[INFO] [stdout]    |
[INFO] [stdout] 16 |     Move { x: i32, y: i32 },
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `ChangeColor`
[INFO] [stdout]   --> src/bin/enum.rs:18:5
[INFO] [stdout]    |
[INFO] [stdout] 18 |     ChangeColor(i32, i32, i32),
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `route`
[INFO] [stdout]   --> src/bin/enum.rs:27:4
[INFO] [stdout]    |
[INFO] [stdout] 27 | fn route(ip_type: IpAddrKind) {}
[INFO] [stdout]    |    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `loopBack` should have a snake case name
[INFO] [stdout]   --> src/bin/enum.rs:37:9
[INFO] [stdout]    |
[INFO] [stdout] 37 |     let loopBack = IpAddr {
[INFO] [stdout]    |         ^^^^^^^^ help: convert the identifier to snake case: `loop_back`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 9 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 13 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 3.41s
[INFO] running `Command { std: "docker" "inspect" "1b3a41a42f2aa68ac9a0604586e492e339881713cdc0bfb164026b8308388a67", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1b3a41a42f2aa68ac9a0604586e492e339881713cdc0bfb164026b8308388a67", kill_on_drop: false }`
[INFO] [stdout] 1b3a41a42f2aa68ac9a0604586e492e339881713cdc0bfb164026b8308388a67
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 4efa7563608a38458b2f459777fc46e5d7b071a6cb532a76572d8ed8825045dd
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "4efa7563608a38458b2f459777fc46e5d7b071a6cb532a76572d8ed8825045dd", kill_on_drop: false }`
[INFO] [stderr] warning: unused import: `crate::front_of_house::hosting`
[INFO] [stderr]   --> src/lib.rs:17:5
[INFO] [stderr]    |
[INFO] [stderr] 17 | use crate::front_of_house::hosting;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::collections::HashMap`
[INFO] [stderr]   --> src/lib.rs:18:5
[INFO] [stderr]    |
[INFO] [stderr] 18 | use std::collections::HashMap;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::io`
[INFO] [stderr]   --> src/lib.rs:22:5
[INFO] [stderr]    |
[INFO] [stderr] 22 | use std::io;
[INFO] [stderr]    |     ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `seat_at_table`
[INFO] [stderr]  --> src/lib.rs:5:16
[INFO] [stderr]   |
[INFO] [stderr] 5 |         pub fn seat_at_table() {}
[INFO] [stderr]   |                ^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `take_order`
[INFO] [stderr]  --> src/lib.rs:9:12
[INFO] [stderr]   |
[INFO] [stderr] 9 |         fn take_order() {}
[INFO] [stderr]   |            ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `server_order`
[INFO] [stderr]   --> src/lib.rs:11:12
[INFO] [stderr]    |
[INFO] [stderr] 11 |         fn server_order() {}
[INFO] [stderr]    |            ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `take_payment`
[INFO] [stderr]   --> src/lib.rs:13:12
[INFO] [stderr]    |
[INFO] [stderr] 13 |         fn take_payment() {}
[INFO] [stderr]    |            ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `function1`
[INFO] [stderr]   --> src/lib.rs:26:4
[INFO] [stderr]    |
[INFO] [stderr] 26 | fn function1() -> fmt::Result {
[INFO] [stderr]    |    ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `function2`
[INFO] [stderr]   --> src/lib.rs:30:4
[INFO] [stderr]    |
[INFO] [stderr] 30 | fn function2() -> fmt::Result {
[INFO] [stderr]    |    ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `rust_demo` (lib) generated 9 warnings
[INFO] [stderr] warning: field is never read: `name`
[INFO] [stderr]  --> src/bin/person.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 |     name: String,
[INFO] [stderr]   |     ^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `say_hello`
[INFO] [stderr]   --> src/bin/person.rs:16:12
[INFO] [stderr]    |
[INFO] [stderr] 16 |     pub fn say_hello(&self) {
[INFO] [stderr]    |            ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `main`
[INFO] [stderr]   --> src/bin/person.rs:21:4
[INFO] [stderr]    |
[INFO] [stderr] 21 | fn main() {
[INFO] [stderr]    |    ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `main`
[INFO] [stderr]  --> src/bin/refrence.rs:1:4
[INFO] [stderr]   |
[INFO] [stderr] 1 | fn main() {
[INFO] [stderr]   |    ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `first_word`
[INFO] [stderr]   --> src/bin/refrence.rs:20:4
[INFO] [stderr]    |
[INFO] [stderr] 20 | fn first_word(str: &str) -> &str {
[INFO] [stderr]    |    ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `first_word_index`
[INFO] [stderr]   --> src/bin/refrence.rs:30:4
[INFO] [stderr]    |
[INFO] [stderr] 30 | fn first_word_index(str: &String) -> usize {
[INFO] [stderr]    |    ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `calculate_len`
[INFO] [stderr]   --> src/bin/refrence.rs:40:8
[INFO] [stderr]    |
[INFO] [stderr] 40 | pub fn calculate_len(str: &String) -> usize {
[INFO] [stderr]    |        ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `rust_demo` (lib test) generated 9 warnings (9 duplicates)
[INFO] [stderr] warning: `rust_demo` (bin "lib" test) generated 7 warnings
[INFO] [stderr] warning: unused import: `crate::IpAddrKind::IPV6`
[INFO] [stderr]  --> src/bin/enum.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use crate::IpAddrKind::IPV6;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `ip_type`
[INFO] [stderr]   --> src/bin/enum.rs:27:10
[INFO] [stderr]    |
[INFO] [stderr] 27 | fn route(ip_type: IpAddrKind) {}
[INFO] [stderr]    |          ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_ip_type`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `four`
[INFO] [stderr]   --> src/bin/enum.rs:30:9
[INFO] [stderr]    |
[INFO] [stderr] 30 |     let four = IpAddrKind::IPV4;
[INFO] [stderr]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_four`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `six`
[INFO] [stderr]   --> src/bin/enum.rs:31:9
[INFO] [stderr]    |
[INFO] [stderr] 31 |     let six = IpAddrKind::IPV6;
[INFO] [stderr]    |         ^^^ help: if this is intentional, prefix it with an underscore: `_six`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `home`
[INFO] [stderr]   --> src/bin/enum.rs:33:9
[INFO] [stderr]    |
[INFO] [stderr] 33 |     let home = IpAddr {
[INFO] [stderr]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_home`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `loopBack`
[INFO] [stderr]   --> src/bin/enum.rs:37:9
[INFO] [stderr]    |
[INFO] [stderr] 37 |     let loopBack = IpAddr {
[INFO] [stderr]    |         ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_loopBack`
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `kind`
[INFO] [stderr]  --> src/bin/enum.rs:9:5
[INFO] [stderr]   |
[INFO] [stderr] 9 |     kind: IpAddrKind,
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `address`
[INFO] [stderr]   --> src/bin/enum.rs:10:5
[INFO] [stderr]    |
[INFO] [stderr] 10 |     address: String,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Quit`
[INFO] [stderr]   --> src/bin/enum.rs:15:5
[INFO] [stderr]    |
[INFO] [stderr] 15 |     Quit,
[INFO] [stderr]    |     ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Move`
[INFO] [stderr]   --> src/bin/enum.rs:16:5
[INFO] [stderr]    |
[INFO] [stderr] 16 |     Move { x: i32, y: i32 },
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `ChangeColor`
[INFO] [stderr]   --> src/bin/enum.rs:18:5
[INFO] [stderr]    |
[INFO] [stderr] 18 |     ChangeColor(i32, i32, i32),
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `route`
[INFO] [stderr]   --> src/bin/enum.rs:27:4
[INFO] [stderr]    |
[INFO] [stderr] 27 | fn route(ip_type: IpAddrKind) {}
[INFO] [stderr]    |    ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variable `loopBack` should have a snake case name
[INFO] [stderr]   --> src/bin/enum.rs:37:9
[INFO] [stderr]    |
[INFO] [stderr] 37 |     let loopBack = IpAddr {
[INFO] [stderr]    |         ^^^^^^^^ help: convert the identifier to snake case: `loop_back`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(non_snake_case)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `email`
[INFO] [stderr]  --> src/bin/struct.rs:4:5
[INFO] [stderr]   |
[INFO] [stderr] 4 |     email: String,
[INFO] [stderr]   |     ^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `build_user`
[INFO] [stderr]  --> src/bin/struct.rs:9:4
[INFO] [stderr]   |
[INFO] [stderr] 9 | fn build_user(email: String, username: String) -> User {
[INFO] [stderr]   |    ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `area`
[INFO] [stderr]   --> src/bin/struct.rs:19:8
[INFO] [stderr]    |
[INFO] [stderr] 19 |     fn area(&mut self) {
[INFO] [stderr]    |        ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `active_check`
[INFO] [stderr]   --> src/bin/struct.rs:23:8
[INFO] [stderr]    |
[INFO] [stderr] 23 |     fn active_check(&self) -> &str {
[INFO] [stderr]    |        ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: enum is never used: `Coin`
[INFO] [stderr]  --> src/bin/match.rs:1:6
[INFO] [stderr]   |
[INFO] [stderr] 1 | enum Coin {
[INFO] [stderr]   |      ^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `value_in_cents`
[INFO] [stderr]  --> src/bin/match.rs:8:4
[INFO] [stderr]   |
[INFO] [stderr] 8 | fn value_in_cents(coin: Coin) -> u8 {
[INFO] [stderr]   |    ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `plus_one`
[INFO] [stderr]   --> src/bin/match.rs:17:4
[INFO] [stderr]    |
[INFO] [stderr] 17 | fn plus_one(x: Option<i32>) -> Option<i32> {
[INFO] [stderr]    |    ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `args`
[INFO] [stderr]   --> src/bin/env_demo.rs:12:9
[INFO] [stderr]    |
[INFO] [stderr] 12 |     let args: Vec<String> = env::args().collect();
[INFO] [stderr]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_args`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `list`
[INFO] [stderr]   --> src/bin/env_demo.rs:17:9
[INFO] [stderr]    |
[INFO] [stderr] 17 |     let list = Cons(1,
[INFO] [stderr]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_list`
[INFO] [stderr] 
[INFO] [stderr] warning: trait `summary` should have an upper camel case name
[INFO] [stderr]  --> src/bin/trait_deomo.rs:1:11
[INFO] [stderr]   |
[INFO] [stderr] 1 | pub trait summary {
[INFO] [stderr]   |           ^^^^^^^ help: convert the identifier to upper camel case (notice the capitalization): `Summary`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(non_camel_case_types)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `content`
[INFO] [stderr]  --> src/bin/trait_deomo.rs:9:5
[INFO] [stderr]   |
[INFO] [stderr] 9 |     content: String,
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: structure field `headLine` should have a snake case name
[INFO] [stderr]  --> src/bin/trait_deomo.rs:6:5
[INFO] [stderr]   |
[INFO] [stderr] 6 |     headLine: String,
[INFO] [stderr]   |     ^^^^^^^^ help: convert the identifier to snake case: `head_line`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(non_snake_case)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `read`
[INFO] [stderr]  --> src/bin/panic_demo.rs:1:21
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::fs::{File, read};
[INFO] [stderr]   |                     ^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `f`
[INFO] [stderr]   --> src/bin/panic_demo.rs:12:9
[INFO] [stderr]    |
[INFO] [stderr] 12 |     let f = match f {
[INFO] [stderr]    |         ^ help: if this is intentional, prefix it with an underscore: `_f`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `read_username_from_file1`
[INFO] [stderr]   --> src/bin/panic_demo.rs:31:4
[INFO] [stderr]    |
[INFO] [stderr] 31 | fn read_username_from_file1() -> Result<String, io::Error> {
[INFO] [stderr]    |    ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::env::VarError`
[INFO] [stderr]  --> src/bin/ver_demo.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::env::VarError;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `third`
[INFO] [stderr]  --> src/bin/ver_demo.rs:9:9
[INFO] [stderr]   |
[INFO] [stderr] 9 |     let third = v[2];
[INFO] [stderr]   |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_third`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `scoresMap`
[INFO] [stderr]   --> src/bin/ver_demo.rs:36:9
[INFO] [stderr]    |
[INFO] [stderr] 36 |     let scoresMap:HashMap<_,_> = teams.iter().zip(initial_scores).collect();
[INFO] [stderr]    |         ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_scoresMap`
[INFO] [stderr] 
[INFO] [stderr] warning: variable `scoresMap` should have a snake case name
[INFO] [stderr]   --> src/bin/ver_demo.rs:36:9
[INFO] [stderr]    |
[INFO] [stderr] 36 |     let scoresMap:HashMap<_,_> = teams.iter().zip(initial_scores).collect();
[INFO] [stderr]    |         ^^^^^^^^^ help: convert the identifier to snake case: `scores_map`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(non_snake_case)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `rust_demo` (bin "enum" test) generated 13 warnings
[INFO] [stderr] warning: `rust_demo` (bin "struct" test) generated 4 warnings
[INFO] [stderr] warning: `rust_demo` (bin "match" test) generated 3 warnings
[INFO] [stderr] warning: `rust_demo` (bin "env_demo" test) generated 2 warnings
[INFO] [stderr] warning: `rust_demo` (bin "trait_deomo" test) generated 3 warnings
[INFO] [stderr] warning: `rust_demo` (bin "panic_demo" test) generated 3 warnings
[INFO] [stderr] warning: `rust_demo` (bin "ver_demo" test) generated 4 warnings
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/rust_demo-408b78761670a914)
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[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/enum-a4b4d53b7ca95586)
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[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/person-5454474dc8136a5d)
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[INFO] [stderr]    Doc-tests rust_demo
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[INFO] running `Command { std: "docker" "inspect" "4efa7563608a38458b2f459777fc46e5d7b071a6cb532a76572d8ed8825045dd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4efa7563608a38458b2f459777fc46e5d7b071a6cb532a76572d8ed8825045dd", kill_on_drop: false }`
[INFO] [stdout] 4efa7563608a38458b2f459777fc46e5d7b071a6cb532a76572d8ed8825045dd