[INFO] cloning repository https://github.com/snustorm/Rust_Learning_Concepts
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/snustorm/Rust_Learning_Concepts" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsnustorm%2FRust_Learning_Concepts", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsnustorm%2FRust_Learning_Concepts'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 9358c7e7bc81252a08006a2c54cb1c27a6e1c5bd
[INFO] building snustorm/Rust_Learning_Concepts against master#11663cd3bfefef7d34e8f0892c250bf698049392+rustflags=-Dtail-expr-drop-order for pr-134523
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsnustorm%2FRust_Learning_Concepts" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/snustorm/Rust_Learning_Concepts on toolchain 11663cd3bfefef7d34e8f0892c250bf698049392
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/snustorm/Rust_Learning_Concepts
[INFO] finished tweaking git repo https://github.com/snustorm/Rust_Learning_Concepts
[INFO] tweaked toml for git repo https://github.com/snustorm/Rust_Learning_Concepts written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/snustorm/Rust_Learning_Concepts already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6316dd00e78dba1cf13195b1719a63af1abe0cf5f923e62dd13438c104c5d5ca
[INFO] running `Command { std: "docker" "start" "-a" "6316dd00e78dba1cf13195b1719a63af1abe0cf5f923e62dd13438c104c5d5ca", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6316dd00e78dba1cf13195b1719a63af1abe0cf5f923e62dd13438c104c5d5ca", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6316dd00e78dba1cf13195b1719a63af1abe0cf5f923e62dd13438c104c5d5ca", kill_on_drop: false }`
[INFO] [stdout] 6316dd00e78dba1cf13195b1719a63af1abe0cf5f923e62dd13438c104c5d5ca
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid -Dtail-expr-drop-order" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 17fa74a5ff07b5a7198721afdc1ab5a7c93ce7306b6b232062ed8c867a7dce7a
[INFO] running `Command { std: "docker" "start" "-a" "17fa74a5ff07b5a7198721afdc1ab5a7c93ce7306b6b232062ed8c867a7dce7a", kill_on_drop: false }`
[INFO] [stderr]    Compiling itertools v0.13.0
[INFO] [stderr]    Compiling project2 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `core::num`
[INFO] [stdout]  --> src/main.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use core::num;
[INFO] [stdout]   |     ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::io`
[INFO] [stdout]  --> src/main.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::io;
[INFO] [stdout]   |     ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::io::prelude::*`
[INFO] [stdout]  --> src/main.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::io::prelude::*;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Debug`
[INFO] [stdout]  --> src/method/generics.rs:1:16
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::fmt::{Debug, Display};
[INFO] [stdout]   |                ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `method::input::*`
[INFO] [stdout]  --> src/main.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 | use method::input::*;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `method::generics::*`
[INFO] [stdout]   --> src/main.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 | use method::generics::*;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `method::error_handle::*`
[INFO] [stdout]   --> src/main.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 11 | use method::error_handle::*;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `f`
[INFO] [stdout]  --> src/method/error_handle.rs:9:9
[INFO] [stdout]   |
[INFO] [stdout] 9 |     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: `f1`
[INFO] [stdout]   --> src/method/error_handle.rs:16:9
[INFO] [stdout]    |
[INFO] [stdout] 16 |     let f1 = File::open("hello.txt").unwrap();
[INFO] [stdout]    |         ^^ help: if this is intentional, prefix it with an underscore: `_f1`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `f`
[INFO] [stdout]   --> src/method/error_handle.rs:23:9
[INFO] [stdout]    |
[INFO] [stdout] 23 |     let f = match f {
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_f`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `f`
[INFO] [stdout]   --> src/method/error_handle.rs:36:9
[INFO] [stdout]    |
[INFO] [stdout] 36 |     let f = File::open("hello.txt").unwrap_or_else( |error| {
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_f`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `a`
[INFO] [stdout]  --> src/method/vector.rs:5:9
[INFO] [stdout]   |
[INFO] [stdout] 5 |     let a = [1, 2, 3];
[INFO] [stdout]   |         ^ help: if this is intentional, prefix it with an underscore: `_a`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `v2`
[INFO] [stdout]   --> src/method/vector.rs:12:9
[INFO] [stdout]    |
[INFO] [stdout] 12 |     let v2 = vec![1,2,3];
[INFO] [stdout]    |         ^^ help: if this is intentional, prefix it with an underscore: `_v2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `name` and `age` are never read
[INFO] [stdout]   --> src/main.rs:17:9
[INFO] [stdout]    |
[INFO] [stdout] 16 | struct Person {
[INFO] [stdout]    |        ------ fields in this struct
[INFO] [stdout] 17 |     pub name: String,
[INFO] [stdout]    |         ^^^^
[INFO] [stdout] 18 |     pub age: u32,
[INFO] [stdout]    |         ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `User` is never constructed
[INFO] [stdout]   --> src/main.rs:27:8
[INFO] [stdout]    |
[INFO] [stdout] 27 | struct User {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `set_id` is never used
[INFO] [stdout]   --> src/main.rs:33:8
[INFO] [stdout]    |
[INFO] [stdout] 32 | impl User {
[INFO] [stdout]    | --------- method in this implementation
[INFO] [stdout] 33 |     fn set_id(&mut self, user_id: i32) {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `add` is never used
[INFO] [stdout]   --> src/main.rs:39:4
[INFO] [stdout]    |
[INFO] [stdout] 39 | fn add( a: &i32, b: &i32) -> i32 {
[INFO] [stdout]    |    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `add2` is never used
[INFO] [stdout]   --> src/main.rs:43:4
[INFO] [stdout]    |
[INFO] [stdout] 43 | fn add2( a: i32, b: i32) -> i32 {
[INFO] [stdout]    |    ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `PrintNumber` is never used
[INFO] [stdout]  --> src/method/input.rs:6:8
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub fn PrintNumber() {
[INFO] [stdout]   |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `calculate_area` is never used
[INFO] [stdout]   --> src/method/input.rs:27:8
[INFO] [stdout]    |
[INFO] [stdout] 27 | pub fn calculate_area() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `print_value` is never used
[INFO] [stdout]  --> src/method/generics.rs:6:8
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub fn print_value<T: Display>(value: T){
[INFO] [stdout]   |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Point` is never constructed
[INFO] [stdout]   --> src/method/generics.rs:12:12
[INFO] [stdout]    |
[INFO] [stdout] 12 | pub struct Point<T: Into<f64>>{
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `distance_from_origin` is never used
[INFO] [stdout]   --> src/method/generics.rs:19:12
[INFO] [stdout]    |
[INFO] [stdout] 17 | impl<T: Into<f64> + Copy> Point<T> {
[INFO] [stdout]    | ---------------------------------- method in this implementation
[INFO] [stdout] 18 |
[INFO] [stdout] 19 |     pub fn distance_from_origin(&self) -> f64 {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `create_file_and_error_handle` is never used
[INFO] [stdout]  --> src/method/error_handle.rs:5:8
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub fn create_file_and_error_handle () {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `read_username_from_file` is never used
[INFO] [stdout]   --> src/method/error_handle.rs:48:4
[INFO] [stdout]    |
[INFO] [stdout] 48 | fn read_username_from_file() -> Result<String, io::Error> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `read_username_from_file1` is never used
[INFO] [stdout]   --> src/method/error_handle.rs:66:4
[INFO] [stdout]    |
[INFO] [stdout] 66 | fn read_username_from_file1() -> Result<String, io::Error> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `PrintNumber` should have a snake case name
[INFO] [stdout]  --> src/method/input.rs:6:8
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub fn PrintNumber() {
[INFO] [stdout]   |        ^^^^^^^^^^^ help: convert the identifier to snake case: `print_number`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.95s
[INFO] running `Command { std: "docker" "inspect" "17fa74a5ff07b5a7198721afdc1ab5a7c93ce7306b6b232062ed8c867a7dce7a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "17fa74a5ff07b5a7198721afdc1ab5a7c93ce7306b6b232062ed8c867a7dce7a", kill_on_drop: false }`
[INFO] [stdout] 17fa74a5ff07b5a7198721afdc1ab5a7c93ce7306b6b232062ed8c867a7dce7a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid -Dtail-expr-drop-order" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5fdd3b6e2293ec37533e1332d8a41fc671abe80c388afb877dd114301bee9f17
[INFO] running `Command { std: "docker" "start" "-a" "5fdd3b6e2293ec37533e1332d8a41fc671abe80c388afb877dd114301bee9f17", kill_on_drop: false }`
[INFO] [stderr]    Compiling project2 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `core::num`
[INFO] [stdout]  --> src/main.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use core::num;
[INFO] [stdout]   |     ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::io`
[INFO] [stdout]  --> src/main.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::io;
[INFO] [stdout]   |     ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::io::prelude::*`
[INFO] [stdout]  --> src/main.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::io::prelude::*;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Debug`
[INFO] [stdout]  --> src/method/generics.rs:1:16
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::fmt::{Debug, Display};
[INFO] [stdout]   |                ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `method::input::*`
[INFO] [stdout]  --> src/main.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 | use method::input::*;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `method::generics::*`
[INFO] [stdout]   --> src/main.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 | use method::generics::*;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `method::error_handle::*`
[INFO] [stdout]   --> src/main.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 11 | use method::error_handle::*;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `f`
[INFO] [stdout]  --> src/method/error_handle.rs:9:9
[INFO] [stdout]   |
[INFO] [stdout] 9 |     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: `f1`
[INFO] [stdout]   --> src/method/error_handle.rs:16:9
[INFO] [stdout]    |
[INFO] [stdout] 16 |     let f1 = File::open("hello.txt").unwrap();
[INFO] [stdout]    |         ^^ help: if this is intentional, prefix it with an underscore: `_f1`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `f`
[INFO] [stdout]   --> src/method/error_handle.rs:23:9
[INFO] [stdout]    |
[INFO] [stdout] 23 |     let f = match f {
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_f`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `f`
[INFO] [stdout]   --> src/method/error_handle.rs:36:9
[INFO] [stdout]    |
[INFO] [stdout] 36 |     let f = File::open("hello.txt").unwrap_or_else( |error| {
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_f`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `a`
[INFO] [stdout]  --> src/method/vector.rs:5:9
[INFO] [stdout]   |
[INFO] [stdout] 5 |     let a = [1, 2, 3];
[INFO] [stdout]   |         ^ help: if this is intentional, prefix it with an underscore: `_a`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `v2`
[INFO] [stdout]   --> src/method/vector.rs:12:9
[INFO] [stdout]    |
[INFO] [stdout] 12 |     let v2 = vec![1,2,3];
[INFO] [stdout]    |         ^^ help: if this is intentional, prefix it with an underscore: `_v2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `name` and `age` are never read
[INFO] [stdout]   --> src/main.rs:17:9
[INFO] [stdout]    |
[INFO] [stdout] 16 | struct Person {
[INFO] [stdout]    |        ------ fields in this struct
[INFO] [stdout] 17 |     pub name: String,
[INFO] [stdout]    |         ^^^^
[INFO] [stdout] 18 |     pub age: u32,
[INFO] [stdout]    |         ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `User` is never constructed
[INFO] [stdout]   --> src/main.rs:27:8
[INFO] [stdout]    |
[INFO] [stdout] 27 | struct User {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `set_id` is never used
[INFO] [stdout]   --> src/main.rs:33:8
[INFO] [stdout]    |
[INFO] [stdout] 32 | impl User {
[INFO] [stdout]    | --------- method in this implementation
[INFO] [stdout] 33 |     fn set_id(&mut self, user_id: i32) {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `add` is never used
[INFO] [stdout]   --> src/main.rs:39:4
[INFO] [stdout]    |
[INFO] [stdout] 39 | fn add( a: &i32, b: &i32) -> i32 {
[INFO] [stdout]    |    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `add2` is never used
[INFO] [stdout]   --> src/main.rs:43:4
[INFO] [stdout]    |
[INFO] [stdout] 43 | fn add2( a: i32, b: i32) -> i32 {
[INFO] [stdout]    |    ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `PrintNumber` is never used
[INFO] [stdout]  --> src/method/input.rs:6:8
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub fn PrintNumber() {
[INFO] [stdout]   |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `calculate_area` is never used
[INFO] [stdout]   --> src/method/input.rs:27:8
[INFO] [stdout]    |
[INFO] [stdout] 27 | pub fn calculate_area() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `print_value` is never used
[INFO] [stdout]  --> src/method/generics.rs:6:8
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub fn print_value<T: Display>(value: T){
[INFO] [stdout]   |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Point` is never constructed
[INFO] [stdout]   --> src/method/generics.rs:12:12
[INFO] [stdout]    |
[INFO] [stdout] 12 | pub struct Point<T: Into<f64>>{
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `distance_from_origin` is never used
[INFO] [stdout]   --> src/method/generics.rs:19:12
[INFO] [stdout]    |
[INFO] [stdout] 17 | impl<T: Into<f64> + Copy> Point<T> {
[INFO] [stdout]    | ---------------------------------- method in this implementation
[INFO] [stdout] 18 |
[INFO] [stdout] 19 |     pub fn distance_from_origin(&self) -> f64 {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `create_file_and_error_handle` is never used
[INFO] [stdout]  --> src/method/error_handle.rs:5:8
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub fn create_file_and_error_handle () {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `read_username_from_file` is never used
[INFO] [stdout]   --> src/method/error_handle.rs:48:4
[INFO] [stdout]    |
[INFO] [stdout] 48 | fn read_username_from_file() -> Result<String, io::Error> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `read_username_from_file1` is never used
[INFO] [stdout]   --> src/method/error_handle.rs:66:4
[INFO] [stdout]    |
[INFO] [stdout] 66 | fn read_username_from_file1() -> Result<String, io::Error> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `PrintNumber` should have a snake case name
[INFO] [stdout]  --> src/method/input.rs:6:8
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub fn PrintNumber() {
[INFO] [stdout]   |        ^^^^^^^^^^^ help: convert the identifier to snake case: `print_number`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.25s
[INFO] running `Command { std: "docker" "inspect" "5fdd3b6e2293ec37533e1332d8a41fc671abe80c388afb877dd114301bee9f17", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5fdd3b6e2293ec37533e1332d8a41fc671abe80c388afb877dd114301bee9f17", kill_on_drop: false }`
[INFO] [stdout] 5fdd3b6e2293ec37533e1332d8a41fc671abe80c388afb877dd114301bee9f17