[INFO] fetching crate rust_project_demo 0.1.0...
[INFO] testing rust_project_demo-0.1.0 against 1.90.0 for beta-1.91-2
[INFO] extracting crate rust_project_demo 0.1.0 into /workspace/builds/worker-3-tc1/source
[INFO] started tweaking crates.io crate rust_project_demo 0.1.0
[INFO] finished tweaking crates.io crate rust_project_demo 0.1.0
[INFO] tweaked toml for crates.io crate rust_project_demo 0.1.0 written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate rust_project_demo 0.1.0 on toolchain 1.90.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.90.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate rust_project_demo 0.1.0 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" "+1.90.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded rand_core v0.5.1
[INFO] [stderr]   Downloaded wasi v0.9.0+wasi-snapshot-preview1
[INFO] [stderr]   Downloaded rust_tutorials v0.1.0
[INFO] [stderr]   Downloaded rand_chacha v0.2.2
[INFO] [stderr]   Downloaded ppv-lite86 v0.2.16
[INFO] [stderr]   Downloaded getrandom v0.1.16
[INFO] [stderr]   Downloaded rand_hc v0.2.0
[INFO] [stderr]   Downloaded rand v0.7.3
[INFO] [stderr]   Downloaded libc v0.2.132
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 99a81f99ee77c96406996896891ef6333ef37b2d7dc304adc2e3f80798d324f5
[INFO] running `Command { std: "docker" "start" "-a" "99a81f99ee77c96406996896891ef6333ef37b2d7dc304adc2e3f80798d324f5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "99a81f99ee77c96406996896891ef6333ef37b2d7dc304adc2e3f80798d324f5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "99a81f99ee77c96406996896891ef6333ef37b2d7dc304adc2e3f80798d324f5", kill_on_drop: false }`
[INFO] [stdout] 99a81f99ee77c96406996896891ef6333ef37b2d7dc304adc2e3f80798d324f5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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=warn" "-e" "RUSTDOCFLAGS=--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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e35ad1b5c4c1ad7380a88ec7cb64dfca5dc26b8e0ff8b71f4967a00a97198689
[INFO] running `Command { std: "docker" "start" "-a" "e35ad1b5c4c1ad7380a88ec7cb64dfca5dc26b8e0ff8b71f4967a00a97198689", kill_on_drop: false }`
[INFO] [stderr] warning: rust_project_demo v0.1.0 (/opt/rustwide/workdir) ignoring invalid dependency `rust_tutorials` which is missing a lib target
[INFO] [stderr]    Compiling libc v0.2.132
[INFO] [stderr]    Compiling getrandom v0.1.16
[INFO] [stderr]    Compiling cfg-if v1.0.0
[INFO] [stderr]    Compiling ppv-lite86 v0.2.16
[INFO] [stderr]    Compiling rand_core v0.5.1
[INFO] [stderr]    Compiling rand_chacha v0.2.2
[INFO] [stderr]    Compiling rand v0.7.3
[INFO] [stderr]    Compiling rust_project_demo v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `item2`
[INFO] [stdout]   --> src/lib.rs:53:32
[INFO] [stdout]    |
[INFO] [stdout] 53 | pub fn notify3<T, U>(item1: T, item2: U)
[INFO] [stdout]    |                                ^^^^^ help: if this is intentional, prefix it with an underscore: `_item2`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::fmt::format`
[INFO] [stdout]  --> src/string.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::fmt::format;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::error::Error`
[INFO] [stdout]  --> src/result_enum.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use std::error::Error;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `rust_project_demo::Summary`
[INFO] [stdout]   --> src/main.rs:16:5
[INFO] [stdout]    |
[INFO] [stdout] 16 | use rust_project_demo::Summary;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `array`
[INFO] [stdout]  --> src/array_type.rs:4:9
[INFO] [stdout]   |
[INFO] [stdout] 4 |     let array: [i32; 5] = [1, 2, 3, 4, 5];
[INFO] [stdout]   |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_array`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `var`
[INFO] [stdout]   --> src/stack_heap.rs:13:9
[INFO] [stdout]    |
[INFO] [stdout] 13 |     let var = 5;
[INFO] [stdout]    |         ^^^ help: if this is intentional, prefix it with an underscore: `_var`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `y`
[INFO] [stdout]   --> src/stack_heap.rs:19:9
[INFO] [stdout]    |
[INFO] [stdout] 19 |     let y = x;
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_y`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/reference_borrowing.rs:34:9
[INFO] [stdout]    |
[INFO] [stdout] 34 |     let mut s = String::from("hello");
[INFO] [stdout]    |         ----^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `res`
[INFO] [stdout]   --> src/struct.rs:54:9
[INFO] [stdout]    |
[INFO] [stdout] 54 |     let res=Rectangle::square(20);
[INFO] [stdout]    |         ^^^ help: if this is intentional, prefix it with an underscore: `_res`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `name`
[INFO] [stdout]    --> src/struct.rs:112:17
[INFO] [stdout]     |
[INFO] [stdout] 112 | pub fn greeting(name: &str) -> String {
[INFO] [stdout]     |                 ^^^^ help: if this is intentional, prefix it with an underscore: `_name`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `four`
[INFO] [stdout]   --> src/enum.rs:19:9
[INFO] [stdout]    |
[INFO] [stdout] 19 |     let four = Ipaddrtype::V4;
[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/enum.rs:20:9
[INFO] [stdout]    |
[INFO] [stdout] 20 |     let six = Ipaddrtype::V6;
[INFO] [stdout]    |         ^^^ help: if this is intentional, prefix it with an underscore: `_six`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `Ipaddr6`
[INFO] [stdout]   --> src/enum.rs:27:9
[INFO] [stdout]    |
[INFO] [stdout] 27 |     let Ipaddr6 = Ipaddr {
[INFO] [stdout]    |         ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_Ipaddr6`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `call`
[INFO] [stdout]   --> src/enum.rs:32:9
[INFO] [stdout]    |
[INFO] [stdout] 32 |     let call = Ipaddr4.iptype.call();
[INFO] [stdout]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_call`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `Ipaddri`
[INFO] [stdout]   --> src/enum.rs:59:14
[INFO] [stdout]    |
[INFO] [stdout] 59 |         Some(Ipaddri) => Some(a.unwrap() + 1),
[INFO] [stdout]    |              ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_Ipaddri`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `row`
[INFO] [stdout]   --> src/vector.rs:44:9
[INFO] [stdout]    |
[INFO] [stdout] 44 |     let row=vec![
[INFO] [stdout]    |         ^^^ help: if this is intentional, prefix it with an underscore: `_row`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `hashmap`
[INFO] [stdout]  --> src/hashmap.rs:6:9
[INFO] [stdout]   |
[INFO] [stdout] 6 |     let hashmap: HashMap<_, _> = teams.iter().zip(scores.iter()).collect();
[INFO] [stdout]   |         ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_hashmap`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/result_enum.rs:18:9
[INFO] [stdout]    |
[INFO] [stdout] 18 |     let mut array = vec![1, 20, 3, 4, 0];
[INFO] [stdout]    |         ----^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/result_enum.rs:22:9
[INFO] [stdout]    |
[INFO] [stdout] 22 |     let mut array = vec![10, 20, 30, 4, 100];
[INFO] [stdout]    |         ----^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/result_enum.rs:26:9
[INFO] [stdout]    |
[INFO] [stdout] 26 |     let mut array = vec![String::from("hello"),String::from("world")];
[INFO] [stdout]    |         ----^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `f`
[INFO] [stdout]   --> src/result_enum.rs:43:9
[INFO] [stdout]    |
[INFO] [stdout] 43 |     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: `f`
[INFO] [stdout]   --> src/result_enum.rs:56:9
[INFO] [stdout]    |
[INFO] [stdout] 56 |     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: `importantExcerpt`
[INFO] [stdout]   --> src/life_time.rs:10:9
[INFO] [stdout]    |
[INFO] [stdout] 10 |     let importantExcerpt = ImportantExcerpt {
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_importantExcerpt`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `s`
[INFO] [stdout]    --> src/function_closures.rs:126:9
[INFO] [stdout]     |
[INFO] [stdout] 126 |     let s = example_closure(String::from("hello"));
[INFO] [stdout]     |         ^ help: if this is intentional, prefix it with an underscore: `_s`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `add_two` is never used
[INFO] [stdout]    --> src/struct.rs:108:8
[INFO] [stdout]     |
[INFO] [stdout] 108 | pub fn add_two(a: i32) -> i32 {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `greeting` is never used
[INFO] [stdout]    --> src/struct.rs:112:8
[INFO] [stdout]     |
[INFO] [stdout] 112 | pub fn greeting(name: &str) -> String {
[INFO] [stdout]     |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `0`, `1`, `2`, and `3` are never read
[INFO] [stdout]  --> src/enum.rs:4:8
[INFO] [stdout]   |
[INFO] [stdout] 4 |     V4(i8, i8, i8, i8),
[INFO] [stdout]   |     -- ^^  ^^  ^^  ^^
[INFO] [stdout]   |     |
[INFO] [stdout]   |     fields in this variant
[INFO] [stdout]   |
[INFO] [stdout]   = note: `Ipaddrtype` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] help: consider changing the fields to be of unit type to suppress this warning while preserving the field numbering, or remove the fields
[INFO] [stdout]   |
[INFO] [stdout] 4 -     V4(i8, i8, i8, i8),
[INFO] [stdout] 4 +     V4((), (), (), ()),
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]  --> src/enum.rs:5:8
[INFO] [stdout]   |
[INFO] [stdout] 5 |     V6(String),
[INFO] [stdout]   |     -- ^^^^^^
[INFO] [stdout]   |     |
[INFO] [stdout]   |     field in this variant
[INFO] [stdout]   |
[INFO] [stdout]   = note: `Ipaddrtype` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]   |
[INFO] [stdout] 5 -     V6(String),
[INFO] [stdout] 5 +     V6(()),
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `address` is never read
[INFO] [stdout]   --> src/enum.rs:15:5
[INFO] [stdout]    |
[INFO] [stdout] 13 | struct Ipaddr {
[INFO] [stdout]    |        ------ field in this struct
[INFO] [stdout] 14 |     iptype: Ipaddrtype,
[INFO] [stdout] 15 |     address: String,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Ipaddr` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `SpreadsheetCell` is never used
[INFO] [stdout]   --> src/vector.rs:37:6
[INFO] [stdout]    |
[INFO] [stdout] 37 | enum SpreadsheetCell{
[INFO] [stdout]    |      ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `vector_enum` is never used
[INFO] [stdout]   --> src/vector.rs:43:8
[INFO] [stdout]    |
[INFO] [stdout] 43 | pub fn vector_enum() {
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `mix` is never used
[INFO] [stdout]   --> src/generic.rs:19:8
[INFO] [stdout]    |
[INFO] [stdout] 18 | impl<T: Display, U: Debug> Point<T, U> {
[INFO] [stdout]    | -------------------------------------- method in this implementation
[INFO] [stdout] 19 |     fn mix<V, W>(self, other: Point<V, W>) -> Point<T, W> {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `part` is never read
[INFO] [stdout]   --> src/life_time.rs:40:5
[INFO] [stdout]    |
[INFO] [stdout] 39 | struct ImportantExcerpt<'a> {
[INFO] [stdout]    |        ---------------- field in this struct
[INFO] [stdout] 40 |     part: &'a str,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `level` and `announce_and_return_part` are never used
[INFO] [stdout]   --> src/life_time.rs:45:8
[INFO] [stdout]    |
[INFO] [stdout] 44 | impl<'a> ImportantExcerpt<'a> {
[INFO] [stdout]    | ----------------------------- methods in this implementation
[INFO] [stdout] 45 |     fn level(&self) -> i32 {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 49 |     fn announce_and_return_part(&self, announcement: &str) -> &str {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `longest_with_an_announcement` is never used
[INFO] [stdout]   --> src/life_time.rs:69:4
[INFO] [stdout]    |
[INFO] [stdout] 69 | fn longest_with_an_announcement<'a, T>(
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main` is never used
[INFO] [stdout]  --> src/accepting_command_line_arguments.rs:6:8
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub fn main() {
[INFO] [stdout]   |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `run` is never used
[INFO] [stdout]   --> src/accepting_command_line_arguments.rs:26:4
[INFO] [stdout]    |
[INFO] [stdout] 26 | fn run(config: Config) -> Result<(), Box<dyn Error>> {
[INFO] [stdout]    |    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Config` is never constructed
[INFO] [stdout]   --> src/accepting_command_line_arguments.rs:41:8
[INFO] [stdout]    |
[INFO] [stdout] 41 | struct Config {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/accepting_command_line_arguments.rs:49:8
[INFO] [stdout]    |
[INFO] [stdout] 47 | impl Config {
[INFO] [stdout]    | ----------- associated function in this implementation
[INFO] [stdout] 48 |     // fn new(args: &[String]) -> Result<Config, &'static str> {
[INFO] [stdout] 49 |     fn new(mut args: std::env::Args) -> Result<Config, &'static str> {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `search` is never used
[INFO] [stdout]   --> src/accepting_command_line_arguments.rs:82:8
[INFO] [stdout]    |
[INFO] [stdout] 82 | pub fn search<'a>(query: &str, contents: &'a str) -> Vec<&'a str> {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `search_case_insensitive` is never used
[INFO] [stdout]   --> src/accepting_command_line_arguments.rs:95:8
[INFO] [stdout]    |
[INFO] [stdout] 95 | pub fn search_case_insensitive<'a>(
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Rectangle` is never constructed
[INFO] [stdout]    --> src/function_closures.rs:176:8
[INFO] [stdout]     |
[INFO] [stdout] 176 | struct Rectangle {
[INFO] [stdout]     |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `sort_by_key` is never used
[INFO] [stdout]    --> src/function_closures.rs:181:8
[INFO] [stdout]     |
[INFO] [stdout] 181 | pub fn sort_by_key() {
[INFO] [stdout]     |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `produce_new_iterators` is never used
[INFO] [stdout]    --> src/function_closures.rs:272:8
[INFO] [stdout]     |
[INFO] [stdout] 272 | pub fn produce_new_iterators() {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Counter` is never constructed
[INFO] [stdout]    --> src/function_closures.rs:282:8
[INFO] [stdout]     |
[INFO] [stdout] 282 | struct Counter {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]    --> src/function_closures.rs:287:8
[INFO] [stdout]     |
[INFO] [stdout] 286 | impl Counter {
[INFO] [stdout]     | ------------ associated function in this implementation
[INFO] [stdout] 287 |     fn new() -> Counter {
[INFO] [stdout]     |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `Ipaddr4` should have a snake case name
[INFO] [stdout]   --> src/enum.rs:22:9
[INFO] [stdout]    |
[INFO] [stdout] 22 |     let Ipaddr4 = Ipaddr {
[INFO] [stdout]    |         ^^^^^^^ help: convert the identifier to snake case (notice the capitalization): `ipaddr4`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `Ipaddr6` should have a snake case name
[INFO] [stdout]   --> src/enum.rs:27:9
[INFO] [stdout]    |
[INFO] [stdout] 27 |     let Ipaddr6 = Ipaddr {
[INFO] [stdout]    |         ^^^^^^^ help: convert the identifier to snake case (notice the capitalization): `ipaddr6`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `Ipaddri` should have a snake case name
[INFO] [stdout]   --> src/enum.rs:59:14
[INFO] [stdout]    |
[INFO] [stdout] 59 |         Some(Ipaddri) => Some(a.unwrap() + 1),
[INFO] [stdout]    |              ^^^^^^^ help: convert the identifier to snake case (notice the capitalization): `ipaddri`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/result_enum.rs:16:5
[INFO] [stdout]    |
[INFO] [stdout] 16 |     read_username_from_file();
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 16 |     let _ = read_username_from_file();
[INFO] [stdout]    |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `importantExcerpt` should have a snake case name
[INFO] [stdout]   --> src/life_time.rs:10:9
[INFO] [stdout]    |
[INFO] [stdout] 10 |     let importantExcerpt = ImportantExcerpt {
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^ help: convert the identifier to snake case: `important_excerpt`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [optimized + debuginfo] target(s) in 4.95s
[INFO] running `Command { std: "docker" "inspect" "e35ad1b5c4c1ad7380a88ec7cb64dfca5dc26b8e0ff8b71f4967a00a97198689", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e35ad1b5c4c1ad7380a88ec7cb64dfca5dc26b8e0ff8b71f4967a00a97198689", kill_on_drop: false }`
[INFO] [stdout] e35ad1b5c4c1ad7380a88ec7cb64dfca5dc26b8e0ff8b71f4967a00a97198689
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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=warn" "-e" "RUSTDOCFLAGS=--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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] bd3d660c9ef8d644e8f874fdf020fcc9e6d8ce6e0a1934b8e85ace7ff8ec90b2
[INFO] running `Command { std: "docker" "start" "-a" "bd3d660c9ef8d644e8f874fdf020fcc9e6d8ce6e0a1934b8e85ace7ff8ec90b2", kill_on_drop: false }`
[INFO] [stderr] warning: rust_project_demo v0.1.0 (/opt/rustwide/workdir) ignoring invalid dependency `rust_tutorials` which is missing a lib target
[INFO] [stderr]    Compiling rust_project_demo v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `item2`
[INFO] [stdout]   --> src/lib.rs:53:32
[INFO] [stdout]    |
[INFO] [stdout] 53 | pub fn notify3<T, U>(item1: T, item2: U)
[INFO] [stdout]    |                                ^^^^^ help: if this is intentional, prefix it with an underscore: `_item2`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::fmt::format`
[INFO] [stdout]  --> src/string.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::fmt::format;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::error::Error`
[INFO] [stdout]  --> src/result_enum.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use std::error::Error;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `rust_project_demo::Summary`
[INFO] [stdout]   --> src/main.rs:16:5
[INFO] [stdout]    |
[INFO] [stdout] 16 | use rust_project_demo::Summary;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `array`
[INFO] [stdout]  --> src/array_type.rs:4:9
[INFO] [stdout]   |
[INFO] [stdout] 4 |     let array: [i32; 5] = [1, 2, 3, 4, 5];
[INFO] [stdout]   |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_array`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `var`
[INFO] [stdout]   --> src/stack_heap.rs:13:9
[INFO] [stdout]    |
[INFO] [stdout] 13 |     let var = 5;
[INFO] [stdout]    |         ^^^ help: if this is intentional, prefix it with an underscore: `_var`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `y`
[INFO] [stdout]   --> src/stack_heap.rs:19:9
[INFO] [stdout]    |
[INFO] [stdout] 19 |     let y = x;
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_y`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/reference_borrowing.rs:34:9
[INFO] [stdout]    |
[INFO] [stdout] 34 |     let mut s = String::from("hello");
[INFO] [stdout]    |         ----^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `res`
[INFO] [stdout]   --> src/struct.rs:54:9
[INFO] [stdout]    |
[INFO] [stdout] 54 |     let res=Rectangle::square(20);
[INFO] [stdout]    |         ^^^ help: if this is intentional, prefix it with an underscore: `_res`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `name`
[INFO] [stdout]    --> src/struct.rs:112:17
[INFO] [stdout]     |
[INFO] [stdout] 112 | pub fn greeting(name: &str) -> String {
[INFO] [stdout]     |                 ^^^^ help: if this is intentional, prefix it with an underscore: `_name`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `four`
[INFO] [stdout]   --> src/enum.rs:19:9
[INFO] [stdout]    |
[INFO] [stdout] 19 |     let four = Ipaddrtype::V4;
[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/enum.rs:20:9
[INFO] [stdout]    |
[INFO] [stdout] 20 |     let six = Ipaddrtype::V6;
[INFO] [stdout]    |         ^^^ help: if this is intentional, prefix it with an underscore: `_six`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `Ipaddr6`
[INFO] [stdout]   --> src/enum.rs:27:9
[INFO] [stdout]    |
[INFO] [stdout] 27 |     let Ipaddr6 = Ipaddr {
[INFO] [stdout]    |         ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_Ipaddr6`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `call`
[INFO] [stdout]   --> src/enum.rs:32:9
[INFO] [stdout]    |
[INFO] [stdout] 32 |     let call = Ipaddr4.iptype.call();
[INFO] [stdout]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_call`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `Ipaddri`
[INFO] [stdout]   --> src/enum.rs:59:14
[INFO] [stdout]    |
[INFO] [stdout] 59 |         Some(Ipaddri) => Some(a.unwrap() + 1),
[INFO] [stdout]    |              ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_Ipaddri`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `row`
[INFO] [stdout]   --> src/vector.rs:44:9
[INFO] [stdout]    |
[INFO] [stdout] 44 |     let row=vec![
[INFO] [stdout]    |         ^^^ help: if this is intentional, prefix it with an underscore: `_row`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `hashmap`
[INFO] [stdout]  --> src/hashmap.rs:6:9
[INFO] [stdout]   |
[INFO] [stdout] 6 |     let hashmap: HashMap<_, _> = teams.iter().zip(scores.iter()).collect();
[INFO] [stdout]   |         ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_hashmap`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/result_enum.rs:18:9
[INFO] [stdout]    |
[INFO] [stdout] 18 |     let mut array = vec![1, 20, 3, 4, 0];
[INFO] [stdout]    |         ----^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/result_enum.rs:22:9
[INFO] [stdout]    |
[INFO] [stdout] 22 |     let mut array = vec![10, 20, 30, 4, 100];
[INFO] [stdout]    |         ----^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/result_enum.rs:26:9
[INFO] [stdout]    |
[INFO] [stdout] 26 |     let mut array = vec![String::from("hello"),String::from("world")];
[INFO] [stdout]    |         ----^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `f`
[INFO] [stdout]   --> src/result_enum.rs:43:9
[INFO] [stdout]    |
[INFO] [stdout] 43 |     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: `f`
[INFO] [stdout]   --> src/result_enum.rs:56:9
[INFO] [stdout]    |
[INFO] [stdout] 56 |     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: `importantExcerpt`
[INFO] [stdout]   --> src/life_time.rs:10:9
[INFO] [stdout]    |
[INFO] [stdout] 10 |     let importantExcerpt = ImportantExcerpt {
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_importantExcerpt`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `s`
[INFO] [stdout]    --> src/function_closures.rs:126:9
[INFO] [stdout]     |
[INFO] [stdout] 126 |     let s = example_closure(String::from("hello"));
[INFO] [stdout]     |         ^ help: if this is intentional, prefix it with an underscore: `_s`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `add_two` is never used
[INFO] [stdout]    --> src/struct.rs:108:8
[INFO] [stdout]     |
[INFO] [stdout] 108 | pub fn add_two(a: i32) -> i32 {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `greeting` is never used
[INFO] [stdout]    --> src/struct.rs:112:8
[INFO] [stdout]     |
[INFO] [stdout] 112 | pub fn greeting(name: &str) -> String {
[INFO] [stdout]     |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `0`, `1`, `2`, and `3` are never read
[INFO] [stdout]  --> src/enum.rs:4:8
[INFO] [stdout]   |
[INFO] [stdout] 4 |     V4(i8, i8, i8, i8),
[INFO] [stdout]   |     -- ^^  ^^  ^^  ^^
[INFO] [stdout]   |     |
[INFO] [stdout]   |     fields in this variant
[INFO] [stdout]   |
[INFO] [stdout]   = note: `Ipaddrtype` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] help: consider changing the fields to be of unit type to suppress this warning while preserving the field numbering, or remove the fields
[INFO] [stdout]   |
[INFO] [stdout] 4 -     V4(i8, i8, i8, i8),
[INFO] [stdout] 4 +     V4((), (), (), ()),
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]  --> src/enum.rs:5:8
[INFO] [stdout]   |
[INFO] [stdout] 5 |     V6(String),
[INFO] [stdout]   |     -- ^^^^^^
[INFO] [stdout]   |     |
[INFO] [stdout]   |     field in this variant
[INFO] [stdout]   |
[INFO] [stdout]   = note: `Ipaddrtype` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]   |
[INFO] [stdout] 5 -     V6(String),
[INFO] [stdout] 5 +     V6(()),
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `address` is never read
[INFO] [stdout]   --> src/enum.rs:15:5
[INFO] [stdout]    |
[INFO] [stdout] 13 | struct Ipaddr {
[INFO] [stdout]    |        ------ field in this struct
[INFO] [stdout] 14 |     iptype: Ipaddrtype,
[INFO] [stdout] 15 |     address: String,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Ipaddr` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `SpreadsheetCell` is never used
[INFO] [stdout]   --> src/vector.rs:37:6
[INFO] [stdout]    |
[INFO] [stdout] 37 | enum SpreadsheetCell{
[INFO] [stdout]    |      ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `vector_enum` is never used
[INFO] [stdout]   --> src/vector.rs:43:8
[INFO] [stdout]    |
[INFO] [stdout] 43 | pub fn vector_enum() {
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `mix` is never used
[INFO] [stdout]   --> src/generic.rs:19:8
[INFO] [stdout]    |
[INFO] [stdout] 18 | impl<T: Display, U: Debug> Point<T, U> {
[INFO] [stdout]    | -------------------------------------- method in this implementation
[INFO] [stdout] 19 |     fn mix<V, W>(self, other: Point<V, W>) -> Point<T, W> {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `part` is never read
[INFO] [stdout]   --> src/life_time.rs:40:5
[INFO] [stdout]    |
[INFO] [stdout] 39 | struct ImportantExcerpt<'a> {
[INFO] [stdout]    |        ---------------- field in this struct
[INFO] [stdout] 40 |     part: &'a str,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `level` and `announce_and_return_part` are never used
[INFO] [stdout]   --> src/life_time.rs:45:8
[INFO] [stdout]    |
[INFO] [stdout] 44 | impl<'a> ImportantExcerpt<'a> {
[INFO] [stdout]    | ----------------------------- methods in this implementation
[INFO] [stdout] 45 |     fn level(&self) -> i32 {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 49 |     fn announce_and_return_part(&self, announcement: &str) -> &str {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `longest_with_an_announcement` is never used
[INFO] [stdout]   --> src/life_time.rs:69:4
[INFO] [stdout]    |
[INFO] [stdout] 69 | fn longest_with_an_announcement<'a, T>(
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main` is never used
[INFO] [stdout]  --> src/accepting_command_line_arguments.rs:6:8
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub fn main() {
[INFO] [stdout]   |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `run` is never used
[INFO] [stdout]   --> src/accepting_command_line_arguments.rs:26:4
[INFO] [stdout]    |
[INFO] [stdout] 26 | fn run(config: Config) -> Result<(), Box<dyn Error>> {
[INFO] [stdout]    |    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Config` is never constructed
[INFO] [stdout]   --> src/accepting_command_line_arguments.rs:41:8
[INFO] [stdout]    |
[INFO] [stdout] 41 | struct Config {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/accepting_command_line_arguments.rs:49:8
[INFO] [stdout]    |
[INFO] [stdout] 47 | impl Config {
[INFO] [stdout]    | ----------- associated function in this implementation
[INFO] [stdout] 48 |     // fn new(args: &[String]) -> Result<Config, &'static str> {
[INFO] [stdout] 49 |     fn new(mut args: std::env::Args) -> Result<Config, &'static str> {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `search` is never used
[INFO] [stdout]   --> src/accepting_command_line_arguments.rs:82:8
[INFO] [stdout]    |
[INFO] [stdout] 82 | pub fn search<'a>(query: &str, contents: &'a str) -> Vec<&'a str> {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `search_case_insensitive` is never used
[INFO] [stdout]   --> src/accepting_command_line_arguments.rs:95:8
[INFO] [stdout]    |
[INFO] [stdout] 95 | pub fn search_case_insensitive<'a>(
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Rectangle` is never constructed
[INFO] [stdout]    --> src/function_closures.rs:176:8
[INFO] [stdout]     |
[INFO] [stdout] 176 | struct Rectangle {
[INFO] [stdout]     |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `sort_by_key` is never used
[INFO] [stdout]    --> src/function_closures.rs:181:8
[INFO] [stdout]     |
[INFO] [stdout] 181 | pub fn sort_by_key() {
[INFO] [stdout]     |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `produce_new_iterators` is never used
[INFO] [stdout]    --> src/function_closures.rs:272:8
[INFO] [stdout]     |
[INFO] [stdout] 272 | pub fn produce_new_iterators() {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Counter` is never constructed
[INFO] [stdout]    --> src/function_closures.rs:282:8
[INFO] [stdout]     |
[INFO] [stdout] 282 | struct Counter {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]    --> src/function_closures.rs:287:8
[INFO] [stdout]     |
[INFO] [stdout] 286 | impl Counter {
[INFO] [stdout]     | ------------ associated function in this implementation
[INFO] [stdout] 287 |     fn new() -> Counter {
[INFO] [stdout]     |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `Ipaddr4` should have a snake case name
[INFO] [stdout]   --> src/enum.rs:22:9
[INFO] [stdout]    |
[INFO] [stdout] 22 |     let Ipaddr4 = Ipaddr {
[INFO] [stdout]    |         ^^^^^^^ help: convert the identifier to snake case (notice the capitalization): `ipaddr4`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `Ipaddr6` should have a snake case name
[INFO] [stdout]   --> src/enum.rs:27:9
[INFO] [stdout]    |
[INFO] [stdout] 27 |     let Ipaddr6 = Ipaddr {
[INFO] [stdout]    |         ^^^^^^^ help: convert the identifier to snake case (notice the capitalization): `ipaddr6`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `Ipaddri` should have a snake case name
[INFO] [stdout]   --> src/enum.rs:59:14
[INFO] [stdout]    |
[INFO] [stdout] 59 |         Some(Ipaddri) => Some(a.unwrap() + 1),
[INFO] [stdout]    |              ^^^^^^^ help: convert the identifier to snake case (notice the capitalization): `ipaddri`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/result_enum.rs:16:5
[INFO] [stdout]    |
[INFO] [stdout] 16 |     read_username_from_file();
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 16 |     let _ = read_username_from_file();
[INFO] [stdout]    |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `importantExcerpt` should have a snake case name
[INFO] [stdout]   --> src/life_time.rs:10:9
[INFO] [stdout]    |
[INFO] [stdout] 10 |     let importantExcerpt = ImportantExcerpt {
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^ help: convert the identifier to snake case: `important_excerpt`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `item2`
[INFO] [stdout]   --> src/lib.rs:53:32
[INFO] [stdout]    |
[INFO] [stdout] 53 | pub fn notify3<T, U>(item1: T, item2: U)
[INFO] [stdout]    |                                ^^^^^ help: if this is intentional, prefix it with an underscore: `_item2`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `rust_project_demo`
[INFO] [stdout]  --> tests/another_integration_test.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use rust_project_demo;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `rust_project_demo`
[INFO] [stdout]  --> tests/integration_test.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use rust_project_demo;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::fmt::format`
[INFO] [stdout]  --> src/string.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::fmt::format;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::error::Error`
[INFO] [stdout]  --> src/result_enum.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use std::error::Error;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `rust_project_demo::Summary`
[INFO] [stdout]   --> src/main.rs:16:5
[INFO] [stdout]    |
[INFO] [stdout] 16 | use rust_project_demo::Summary;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `value` is never read
[INFO] [stdout]   --> tests/result_test.rs:27:5
[INFO] [stdout]    |
[INFO] [stdout] 26 | pub struct Guess {
[INFO] [stdout]    |            ----- field in this struct
[INFO] [stdout] 27 |     value: i32,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `array`
[INFO] [stdout]  --> src/array_type.rs:4:9
[INFO] [stdout]   |
[INFO] [stdout] 4 |     let array: [i32; 5] = [1, 2, 3, 4, 5];
[INFO] [stdout]   |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_array`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `var`
[INFO] [stdout]   --> src/stack_heap.rs:13:9
[INFO] [stdout]    |
[INFO] [stdout] 13 |     let var = 5;
[INFO] [stdout]    |         ^^^ help: if this is intentional, prefix it with an underscore: `_var`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `y`
[INFO] [stdout]   --> src/stack_heap.rs:19:9
[INFO] [stdout]    |
[INFO] [stdout] 19 |     let y = x;
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_y`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/reference_borrowing.rs:34:9
[INFO] [stdout]    |
[INFO] [stdout] 34 |     let mut s = String::from("hello");
[INFO] [stdout]    |         ----^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `res`
[INFO] [stdout]   --> src/struct.rs:54:9
[INFO] [stdout]    |
[INFO] [stdout] 54 |     let res=Rectangle::square(20);
[INFO] [stdout]    |         ^^^ help: if this is intentional, prefix it with an underscore: `_res`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `name`
[INFO] [stdout]    --> src/struct.rs:112:17
[INFO] [stdout]     |
[INFO] [stdout] 112 | pub fn greeting(name: &str) -> String {
[INFO] [stdout]     |                 ^^^^ help: if this is intentional, prefix it with an underscore: `_name`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `four`
[INFO] [stdout]   --> src/enum.rs:19:9
[INFO] [stdout]    |
[INFO] [stdout] 19 |     let four = Ipaddrtype::V4;
[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/enum.rs:20:9
[INFO] [stdout]    |
[INFO] [stdout] 20 |     let six = Ipaddrtype::V6;
[INFO] [stdout]    |         ^^^ help: if this is intentional, prefix it with an underscore: `_six`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `Ipaddr6`
[INFO] [stdout]   --> src/enum.rs:27:9
[INFO] [stdout]    |
[INFO] [stdout] 27 |     let Ipaddr6 = Ipaddr {
[INFO] [stdout]    |         ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_Ipaddr6`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `call`
[INFO] [stdout]   --> src/enum.rs:32:9
[INFO] [stdout]    |
[INFO] [stdout] 32 |     let call = Ipaddr4.iptype.call();
[INFO] [stdout]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_call`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `Ipaddri`
[INFO] [stdout]   --> src/enum.rs:59:14
[INFO] [stdout]    |
[INFO] [stdout] 59 |         Some(Ipaddri) => Some(a.unwrap() + 1),
[INFO] [stdout]    |              ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_Ipaddri`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `row`
[INFO] [stdout]   --> src/vector.rs:44:9
[INFO] [stdout]    |
[INFO] [stdout] 44 |     let row=vec![
[INFO] [stdout]    |         ^^^ help: if this is intentional, prefix it with an underscore: `_row`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `hashmap`
[INFO] [stdout]  --> src/hashmap.rs:6:9
[INFO] [stdout]   |
[INFO] [stdout] 6 |     let hashmap: HashMap<_, _> = teams.iter().zip(scores.iter()).collect();
[INFO] [stdout]   |         ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_hashmap`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/result_enum.rs:18:9
[INFO] [stdout]    |
[INFO] [stdout] 18 |     let mut array = vec![1, 20, 3, 4, 0];
[INFO] [stdout]    |         ----^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/result_enum.rs:22:9
[INFO] [stdout]    |
[INFO] [stdout] 22 |     let mut array = vec![10, 20, 30, 4, 100];
[INFO] [stdout]    |         ----^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/result_enum.rs:26:9
[INFO] [stdout]    |
[INFO] [stdout] 26 |     let mut array = vec![String::from("hello"),String::from("world")];
[INFO] [stdout]    |         ----^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `f`
[INFO] [stdout]   --> src/result_enum.rs:43:9
[INFO] [stdout]    |
[INFO] [stdout] 43 |     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: `f`
[INFO] [stdout]   --> src/result_enum.rs:56:9
[INFO] [stdout]    |
[INFO] [stdout] 56 |     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: `importantExcerpt`
[INFO] [stdout]   --> src/life_time.rs:10:9
[INFO] [stdout]    |
[INFO] [stdout] 10 |     let importantExcerpt = ImportantExcerpt {
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_importantExcerpt`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `s`
[INFO] [stdout]    --> src/function_closures.rs:126:9
[INFO] [stdout]     |
[INFO] [stdout] 126 |     let s = example_closure(String::from("hello"));
[INFO] [stdout]     |         ^ help: if this is intentional, prefix it with an underscore: `_s`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `0`, `1`, `2`, and `3` are never read
[INFO] [stdout]  --> src/enum.rs:4:8
[INFO] [stdout]   |
[INFO] [stdout] 4 |     V4(i8, i8, i8, i8),
[INFO] [stdout]   |     -- ^^  ^^  ^^  ^^
[INFO] [stdout]   |     |
[INFO] [stdout]   |     fields in this variant
[INFO] [stdout]   |
[INFO] [stdout]   = note: `Ipaddrtype` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] help: consider changing the fields to be of unit type to suppress this warning while preserving the field numbering, or remove the fields
[INFO] [stdout]   |
[INFO] [stdout] 4 -     V4(i8, i8, i8, i8),
[INFO] [stdout] 4 +     V4((), (), (), ()),
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]  --> src/enum.rs:5:8
[INFO] [stdout]   |
[INFO] [stdout] 5 |     V6(String),
[INFO] [stdout]   |     -- ^^^^^^
[INFO] [stdout]   |     |
[INFO] [stdout]   |     field in this variant
[INFO] [stdout]   |
[INFO] [stdout]   = note: `Ipaddrtype` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]   |
[INFO] [stdout] 5 -     V6(String),
[INFO] [stdout] 5 +     V6(()),
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `address` is never read
[INFO] [stdout]   --> src/enum.rs:15:5
[INFO] [stdout]    |
[INFO] [stdout] 13 | struct Ipaddr {
[INFO] [stdout]    |        ------ field in this struct
[INFO] [stdout] 14 |     iptype: Ipaddrtype,
[INFO] [stdout] 15 |     address: String,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Ipaddr` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `SpreadsheetCell` is never used
[INFO] [stdout]   --> src/vector.rs:37:6
[INFO] [stdout]    |
[INFO] [stdout] 37 | enum SpreadsheetCell{
[INFO] [stdout]    |      ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `vector_enum` is never used
[INFO] [stdout]   --> src/vector.rs:43:8
[INFO] [stdout]    |
[INFO] [stdout] 43 | pub fn vector_enum() {
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `mix` is never used
[INFO] [stdout]   --> src/generic.rs:19:8
[INFO] [stdout]    |
[INFO] [stdout] 18 | impl<T: Display, U: Debug> Point<T, U> {
[INFO] [stdout]    | -------------------------------------- method in this implementation
[INFO] [stdout] 19 |     fn mix<V, W>(self, other: Point<V, W>) -> Point<T, W> {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `part` is never read
[INFO] [stdout]   --> src/life_time.rs:40:5
[INFO] [stdout]    |
[INFO] [stdout] 39 | struct ImportantExcerpt<'a> {
[INFO] [stdout]    |        ---------------- field in this struct
[INFO] [stdout] 40 |     part: &'a str,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `level` and `announce_and_return_part` are never used
[INFO] [stdout]   --> src/life_time.rs:45:8
[INFO] [stdout]    |
[INFO] [stdout] 44 | impl<'a> ImportantExcerpt<'a> {
[INFO] [stdout]    | ----------------------------- methods in this implementation
[INFO] [stdout] 45 |     fn level(&self) -> i32 {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 49 |     fn announce_and_return_part(&self, announcement: &str) -> &str {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `longest_with_an_announcement` is never used
[INFO] [stdout]   --> src/life_time.rs:69:4
[INFO] [stdout]    |
[INFO] [stdout] 69 | fn longest_with_an_announcement<'a, T>(
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main` is never used
[INFO] [stdout]  --> src/accepting_command_line_arguments.rs:6:8
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub fn main() {
[INFO] [stdout]   |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `run` is never used
[INFO] [stdout]   --> src/accepting_command_line_arguments.rs:26:4
[INFO] [stdout]    |
[INFO] [stdout] 26 | fn run(config: Config) -> Result<(), Box<dyn Error>> {
[INFO] [stdout]    |    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Config` is never constructed
[INFO] [stdout]   --> src/accepting_command_line_arguments.rs:41:8
[INFO] [stdout]    |
[INFO] [stdout] 41 | struct Config {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/accepting_command_line_arguments.rs:49:8
[INFO] [stdout]    |
[INFO] [stdout] 47 | impl Config {
[INFO] [stdout]    | ----------- associated function in this implementation
[INFO] [stdout] 48 |     // fn new(args: &[String]) -> Result<Config, &'static str> {
[INFO] [stdout] 49 |     fn new(mut args: std::env::Args) -> Result<Config, &'static str> {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `search_case_insensitive` is never used
[INFO] [stdout]   --> src/accepting_command_line_arguments.rs:95:8
[INFO] [stdout]    |
[INFO] [stdout] 95 | pub fn search_case_insensitive<'a>(
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Rectangle` is never constructed
[INFO] [stdout]    --> src/function_closures.rs:176:8
[INFO] [stdout]     |
[INFO] [stdout] 176 | struct Rectangle {
[INFO] [stdout]     |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `sort_by_key` is never used
[INFO] [stdout]    --> src/function_closures.rs:181:8
[INFO] [stdout]     |
[INFO] [stdout] 181 | pub fn sort_by_key() {
[INFO] [stdout]     |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `produce_new_iterators` is never used
[INFO] [stdout]    --> src/function_closures.rs:272:8
[INFO] [stdout]     |
[INFO] [stdout] 272 | pub fn produce_new_iterators() {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `use_iterators` is never used
[INFO] [stdout]    --> src/function_closures.rs:207:12
[INFO] [stdout]     |
[INFO] [stdout] 207 |     pub fn use_iterators() {
[INFO] [stdout]     |            ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `Ipaddr4` should have a snake case name
[INFO] [stdout]   --> src/enum.rs:22:9
[INFO] [stdout]    |
[INFO] [stdout] 22 |     let Ipaddr4 = Ipaddr {
[INFO] [stdout]    |         ^^^^^^^ help: convert the identifier to snake case (notice the capitalization): `ipaddr4`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `Ipaddr6` should have a snake case name
[INFO] [stdout]   --> src/enum.rs:27:9
[INFO] [stdout]    |
[INFO] [stdout] 27 |     let Ipaddr6 = Ipaddr {
[INFO] [stdout]    |         ^^^^^^^ help: convert the identifier to snake case (notice the capitalization): `ipaddr6`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `Ipaddri` should have a snake case name
[INFO] [stdout]   --> src/enum.rs:59:14
[INFO] [stdout]    |
[INFO] [stdout] 59 |         Some(Ipaddri) => Some(a.unwrap() + 1),
[INFO] [stdout]    |              ^^^^^^^ help: convert the identifier to snake case (notice the capitalization): `ipaddri`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/result_enum.rs:16:5
[INFO] [stdout]    |
[INFO] [stdout] 16 |     read_username_from_file();
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 16 |     let _ = read_username_from_file();
[INFO] [stdout]    |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `importantExcerpt` should have a snake case name
[INFO] [stdout]   --> src/life_time.rs:10:9
[INFO] [stdout]    |
[INFO] [stdout] 10 |     let importantExcerpt = ImportantExcerpt {
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^ help: convert the identifier to snake case: `important_excerpt`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [optimized + debuginfo] target(s) in 1.27s
[INFO] running `Command { std: "docker" "inspect" "bd3d660c9ef8d644e8f874fdf020fcc9e6d8ce6e0a1934b8e85ace7ff8ec90b2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bd3d660c9ef8d644e8f874fdf020fcc9e6d8ce6e0a1934b8e85ace7ff8ec90b2", kill_on_drop: false }`
[INFO] [stdout] bd3d660c9ef8d644e8f874fdf020fcc9e6d8ce6e0a1934b8e85ace7ff8ec90b2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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=warn" "-e" "RUSTDOCFLAGS=--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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] d8358b42d40230f35de0fdbcec16723b6ea5beb1c8f04619890f65c4c1576c17
[INFO] running `Command { std: "docker" "start" "-a" "d8358b42d40230f35de0fdbcec16723b6ea5beb1c8f04619890f65c4c1576c17", kill_on_drop: false }`
[INFO] [stderr] warning: rust_project_demo v0.1.0 (/opt/rustwide/workdir) ignoring invalid dependency `rust_tutorials` which is missing a lib target
[INFO] [stderr] warning: unused variable: `item2`
[INFO] [stderr]   --> src/lib.rs:53:32
[INFO] [stderr]    |
[INFO] [stderr] 53 | pub fn notify3<T, U>(item1: T, item2: U)
[INFO] [stderr]    |                                ^^^^^ help: if this is intentional, prefix it with an underscore: `_item2`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `rust_project_demo` (lib) generated 1 warning
[INFO] [stderr] warning: unused import: `std::fmt::format`
[INFO] [stderr]  --> src/string.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::fmt::format;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::error::Error`
[INFO] [stderr]  --> src/result_enum.rs:6:5
[INFO] [stderr]   |
[INFO] [stderr] 6 | use std::error::Error;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `rust_project_demo::Summary`
[INFO] [stderr]   --> src/main.rs:16:5
[INFO] [stderr]    |
[INFO] [stderr] 16 | use rust_project_demo::Summary;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `array`
[INFO] [stderr]  --> src/array_type.rs:4:9
[INFO] [stderr]   |
[INFO] [stderr] 4 |     let array: [i32; 5] = [1, 2, 3, 4, 5];
[INFO] [stderr]   |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_array`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `var`
[INFO] [stderr]   --> src/stack_heap.rs:13:9
[INFO] [stderr]    |
[INFO] [stderr] 13 |     let var = 5;
[INFO] [stderr]    |         ^^^ help: if this is intentional, prefix it with an underscore: `_var`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `y`
[INFO] [stderr]   --> src/stack_heap.rs:19:9
[INFO] [stderr]    |
[INFO] [stderr] 19 |     let y = x;
[INFO] [stderr]    |         ^ help: if this is intentional, prefix it with an underscore: `_y`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/reference_borrowing.rs:34:9
[INFO] [stderr]    |
[INFO] [stderr] 34 |     let mut s = String::from("hello");
[INFO] [stderr]    |         ----^
[INFO] [stderr]    |         |
[INFO] [stderr]    |         help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `res`
[INFO] [stderr]   --> src/struct.rs:54:9
[INFO] [stderr]    |
[INFO] [stderr] 54 |     let res=Rectangle::square(20);
[INFO] [stderr]    |         ^^^ help: if this is intentional, prefix it with an underscore: `_res`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `name`
[INFO] [stderr]    --> src/struct.rs:112:17
[INFO] [stderr]     |
[INFO] [stderr] 112 | pub fn greeting(name: &str) -> String {
[INFO] [stderr]     |                 ^^^^ help: if this is intentional, prefix it with an underscore: `_name`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `four`
[INFO] [stderr]   --> src/enum.rs:19:9
[INFO] [stderr]    |
[INFO] [stderr] 19 |     let four = Ipaddrtype::V4;
[INFO] [stderr]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_four`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `six`
[INFO] [stderr]   --> src/enum.rs:20:9
[INFO] [stderr]    |
[INFO] [stderr] 20 |     let six = Ipaddrtype::V6;
[INFO] [stderr]    |         ^^^ help: if this is intentional, prefix it with an underscore: `_six`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `Ipaddr6`
[INFO] [stderr]   --> src/enum.rs:27:9
[INFO] [stderr]    |
[INFO] [stderr] 27 |     let Ipaddr6 = Ipaddr {
[INFO] [stderr]    |         ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_Ipaddr6`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `call`
[INFO] [stderr]   --> src/enum.rs:32:9
[INFO] [stderr]    |
[INFO] [stderr] 32 |     let call = Ipaddr4.iptype.call();
[INFO] [stderr]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_call`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `Ipaddri`
[INFO] [stderr]   --> src/enum.rs:59:14
[INFO] [stderr]    |
[INFO] [stderr] 59 |         Some(Ipaddri) => Some(a.unwrap() + 1),
[INFO] [stderr]    |              ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_Ipaddri`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `row`
[INFO] [stderr]   --> src/vector.rs:44:9
[INFO] [stderr]    |
[INFO] [stderr] 44 |     let row=vec![
[INFO] [stderr]    |         ^^^ help: if this is intentional, prefix it with an underscore: `_row`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `hashmap`
[INFO] [stderr]  --> src/hashmap.rs:6:9
[INFO] [stderr]   |
[INFO] [stderr] 6 |     let hashmap: HashMap<_, _> = teams.iter().zip(scores.iter()).collect();
[INFO] [stderr]   |         ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_hashmap`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/result_enum.rs:18:9
[INFO] [stderr]    |
[INFO] [stderr] 18 |     let mut array = vec![1, 20, 3, 4, 0];
[INFO] [stderr]    |         ----^^^^^
[INFO] [stderr]    |         |
[INFO] [stderr]    |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/result_enum.rs:22:9
[INFO] [stderr]    |
[INFO] [stderr] 22 |     let mut array = vec![10, 20, 30, 4, 100];
[INFO] [stderr]    |         ----^^^^^
[INFO] [stderr]    |         |
[INFO] [stderr]    |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/result_enum.rs:26:9
[INFO] [stderr]    |
[INFO] [stderr] 26 |     let mut array = vec![String::from("hello"),String::from("world")];
[INFO] [stderr]    |         ----^^^^^
[INFO] [stderr]    |         |
[INFO] [stderr]    |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `f`
[INFO] [stderr]   --> src/result_enum.rs:43:9
[INFO] [stderr]    |
[INFO] [stderr] 43 |     let f = File::open("hello.txt").unwrap_or_else(|error| {
[INFO] [stderr]    |         ^ help: if this is intentional, prefix it with an underscore: `_f`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `f`
[INFO] [stderr]   --> src/result_enum.rs:56:9
[INFO] [stderr]    |
[INFO] [stderr] 56 |     let f = match f {
[INFO] [stderr]    |         ^ help: if this is intentional, prefix it with an underscore: `_f`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `importantExcerpt`
[INFO] [stderr]   --> src/life_time.rs:10:9
[INFO] [stderr]    |
[INFO] [stderr] 10 |     let importantExcerpt = ImportantExcerpt {
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_importantExcerpt`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `s`
[INFO] [stderr]    --> src/function_closures.rs:126:9
[INFO] [stderr]     |
[INFO] [stderr] 126 |     let s = example_closure(String::from("hello"));
[INFO] [stderr]     |         ^ help: if this is intentional, prefix it with an underscore: `_s`
[INFO] [stderr] 
[INFO] [stderr] warning: fields `0`, `1`, `2`, and `3` are never read
[INFO] [stderr]  --> src/enum.rs:4:8
[INFO] [stderr]   |
[INFO] [stderr] 4 |     V4(i8, i8, i8, i8),
[INFO] [stderr]   |     -- ^^  ^^  ^^  ^^
[INFO] [stderr]   |     |
[INFO] [stderr]   |     fields in this variant
[INFO] [stderr]   |
[INFO] [stderr]   = note: `Ipaddrtype` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] help: consider changing the fields to be of unit type to suppress this warning while preserving the field numbering, or remove the fields
[INFO] [stderr]   |
[INFO] [stderr] 4 -     V4(i8, i8, i8, i8),
[INFO] [stderr] 4 +     V4((), (), (), ()),
[INFO] [stderr]   |
[INFO] [stderr] 
[INFO] [stderr] warning: field `0` is never read
[INFO] [stderr]  --> src/enum.rs:5:8
[INFO] [stderr]   |
[INFO] [stderr] 5 |     V6(String),
[INFO] [stderr]   |     -- ^^^^^^
[INFO] [stderr]   |     |
[INFO] [stderr]   |     field in this variant
[INFO] [stderr]   |
[INFO] [stderr]   = note: `Ipaddrtype` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stderr] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stderr]   |
[INFO] [stderr] 5 -     V6(String),
[INFO] [stderr] 5 +     V6(()),
[INFO] [stderr]   |
[INFO] [stderr] 
[INFO] [stderr] warning: field `address` is never read
[INFO] [stderr]   --> src/enum.rs:15:5
[INFO] [stderr]    |
[INFO] [stderr] 13 | struct Ipaddr {
[INFO] [stderr]    |        ------ field in this struct
[INFO] [stderr] 14 |     iptype: Ipaddrtype,
[INFO] [stderr] 15 |     address: String,
[INFO] [stderr]    |     ^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `Ipaddr` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stderr] 
[INFO] [stderr] warning: enum `SpreadsheetCell` is never used
[INFO] [stderr]   --> src/vector.rs:37:6
[INFO] [stderr]    |
[INFO] [stderr] 37 | enum SpreadsheetCell{
[INFO] [stderr]    |      ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `vector_enum` is never used
[INFO] [stderr]   --> src/vector.rs:43:8
[INFO] [stderr]    |
[INFO] [stderr] 43 | pub fn vector_enum() {
[INFO] [stderr]    |        ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method `mix` is never used
[INFO] [stderr]   --> src/generic.rs:19:8
[INFO] [stderr]    |
[INFO] [stderr] 18 | impl<T: Display, U: Debug> Point<T, U> {
[INFO] [stderr]    | -------------------------------------- method in this implementation
[INFO] [stderr] 19 |     fn mix<V, W>(self, other: Point<V, W>) -> Point<T, W> {
[INFO] [stderr]    |        ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field `part` is never read
[INFO] [stderr]   --> src/life_time.rs:40:5
[INFO] [stderr]    |
[INFO] [stderr] 39 | struct ImportantExcerpt<'a> {
[INFO] [stderr]    |        ---------------- field in this struct
[INFO] [stderr] 40 |     part: &'a str,
[INFO] [stderr]    |     ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: methods `level` and `announce_and_return_part` are never used
[INFO] [stderr]   --> src/life_time.rs:45:8
[INFO] [stderr]    |
[INFO] [stderr] 44 | impl<'a> ImportantExcerpt<'a> {
[INFO] [stderr]    | ----------------------------- methods in this implementation
[INFO] [stderr] 45 |     fn level(&self) -> i32 {
[INFO] [stderr]    |        ^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 49 |     fn announce_and_return_part(&self, announcement: &str) -> &str {
[INFO] [stderr]    |        ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `longest_with_an_announcement` is never used
[INFO] [stderr]   --> src/life_time.rs:69:4
[INFO] [stderr]    |
[INFO] [stderr] 69 | fn longest_with_an_announcement<'a, T>(
[INFO] [stderr]    |    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `main` is never used
[INFO] [stderr]  --> src/accepting_command_line_arguments.rs:6:8
[INFO] [stderr]   |
[INFO] [stderr] 6 | pub fn main() {
[INFO] [stderr]   |        ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `run` is never used
[INFO] [stderr]   --> src/accepting_command_line_arguments.rs:26:4
[INFO] [stderr]    |
[INFO] [stderr] 26 | fn run(config: Config) -> Result<(), Box<dyn Error>> {
[INFO] [stderr]    |    ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct `Config` is never constructed
[INFO] [stderr]   --> src/accepting_command_line_arguments.rs:41:8
[INFO] [stderr]    |
[INFO] [stderr] 41 | struct Config {
[INFO] [stderr]    |        ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function `new` is never used
[INFO] [stderr]   --> src/accepting_command_line_arguments.rs:49:8
[INFO] [stderr]    |
[INFO] [stderr] 47 | impl Config {
[INFO] [stderr]    | ----------- associated function in this implementation
[INFO] [stderr] 48 |     // fn new(args: &[String]) -> Result<Config, &'static str> {
[INFO] [stderr] 49 |     fn new(mut args: std::env::Args) -> Result<Config, &'static str> {
[INFO] [stderr]    |        ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `search_case_insensitive` is never used
[INFO] [stderr]   --> src/accepting_command_line_arguments.rs:95:8
[INFO] [stderr]    |
[INFO] [stderr] 95 | pub fn search_case_insensitive<'a>(
[INFO] [stderr]    |        ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct `Rectangle` is never constructed
[INFO] [stderr]    --> src/function_closures.rs:176:8
[INFO] [stderr]     |
[INFO] [stderr] 176 | struct Rectangle {
[INFO] [stderr]     |        ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `sort_by_key` is never used
[INFO] [stderr]    --> src/function_closures.rs:181:8
[INFO] [stderr]     |
[INFO] [stderr] 181 | pub fn sort_by_key() {
[INFO] [stderr]     |        ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `produce_new_iterators` is never used
[INFO] [stderr]    --> src/function_closures.rs:272:8
[INFO] [stderr]     |
[INFO] [stderr] 272 | pub fn produce_new_iterators() {
[INFO] [stderr]     |        ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `use_iterators` is never used
[INFO] [stderr]    --> src/function_closures.rs:207:12
[INFO] [stderr]     |
[INFO] [stderr] 207 |     pub fn use_iterators() {
[INFO] [stderr]     |            ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variable `Ipaddr4` should have a snake case name
[INFO] [stderr]   --> src/enum.rs:22:9
[INFO] [stderr]    |
[INFO] [stderr] 22 |     let Ipaddr4 = Ipaddr {
[INFO] [stderr]    |         ^^^^^^^ help: convert the identifier to snake case (notice the capitalization): `ipaddr4`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(non_snake_case)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable `Ipaddr6` should have a snake case name
[INFO] [stderr]   --> src/enum.rs:27:9
[INFO] [stderr]    |
[INFO] [stderr] 27 |     let Ipaddr6 = Ipaddr {
[INFO] [stderr]    |         ^^^^^^^ help: convert the identifier to snake case (notice the capitalization): `ipaddr6`
[INFO] [stderr] 
[INFO] [stderr] warning: variable `Ipaddri` should have a snake case name
[INFO] [stderr]   --> src/enum.rs:59:14
[INFO] [stderr]    |
[INFO] [stderr] 59 |         Some(Ipaddri) => Some(a.unwrap() + 1),
[INFO] [stderr]    |              ^^^^^^^ help: convert the identifier to snake case (notice the capitalization): `ipaddri`
[INFO] [stderr] 
[INFO] [stderr] warning: unused `Result` that must be used
[INFO] [stderr]   --> src/result_enum.rs:16:5
[INFO] [stderr]    |
[INFO] [stderr] 16 |     read_username_from_file();
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr] help: use `let _ = ...` to ignore the resulting value
[INFO] [stderr]    |
[INFO] [stderr] 16 |     let _ = read_username_from_file();
[INFO] [stderr]    |     +++++++
[INFO] [stderr] 
[INFO] [stderr] warning: variable `importantExcerpt` should have a snake case name
[INFO] [stderr]   --> src/life_time.rs:10:9
[INFO] [stderr]    |
[INFO] [stderr] 10 |     let importantExcerpt = ImportantExcerpt {
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^ help: convert the identifier to snake case: `important_excerpt`
[INFO] [stderr] 
[INFO] [stderr] warning: `rust_project_demo` (bin "rust_project_demo" test) generated 46 warnings (run `cargo fix --bin "rust_project_demo" --tests` to apply 7 suggestions)
[INFO] [stderr] warning: unused import: `rust_project_demo`
[INFO] [stderr]  --> tests/integration_test.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use rust_project_demo;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `rust_project_demo`
[INFO] [stderr]  --> tests/another_integration_test.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use rust_project_demo;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field `value` is never read
[INFO] [stderr]   --> tests/result_test.rs:27:5
[INFO] [stderr]    |
[INFO] [stderr] 26 | pub struct Guess {
[INFO] [stderr]    |            ----- field in this struct
[INFO] [stderr] 27 |     value: i32,
[INFO] [stderr]    |     ^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function `add_two` is never used
[INFO] [stderr]    --> src/struct.rs:108:8
[INFO] [stderr]     |
[INFO] [stderr] 108 | pub fn add_two(a: i32) -> i32 {
[INFO] [stderr]     |        ^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function `greeting` is never used
[INFO] [stderr]    --> src/struct.rs:112:8
[INFO] [stderr]     |
[INFO] [stderr] 112 | pub fn greeting(name: &str) -> String {
[INFO] [stderr]     |        ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: fields `0`, `1`, `2`, and `3` are never read
[INFO] [stderr]  --> src/enum.rs:4:8
[INFO] [stderr]   |
[INFO] [stderr] 4 |     V4(i8, i8, i8, i8),
[INFO] [stderr]   |     -- ^^  ^^  ^^  ^^
[INFO] [stderr]   |     |
[INFO] [stderr]   |     fields in this variant
[INFO] [stderr]   |
[INFO] [stderr]   = note: `Ipaddrtype` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stderr] help: consider changing the fields to be of unit type to suppress this warning while preserving the field numbering, or remove the fields
[INFO] [stderr]   |
[INFO] [stderr] 4 -     V4(i8, i8, i8, i8),
[INFO] [stderr] 4 +     V4((), (), (), ()),
[INFO] [stderr]   |
[INFO] [stderr] 
[INFO] [stderr] warning: function `search` is never used
[INFO] [stderr]   --> src/accepting_command_line_arguments.rs:82:8
[INFO] [stderr]    |
[INFO] [stderr] 82 | pub fn search<'a>(query: &str, contents: &'a str) -> Vec<&'a str> {
[INFO] [stderr]    |        ^^^^^^
[INFO] [stderr] 
[INFO] [stdout] 
[INFO] [stderr] warning: struct `Counter` is never constructed
[INFO] [stdout] running 0 tests
[INFO] [stderr]    --> src/function_closures.rs:282:8
[INFO] [stdout] 
[INFO] [stderr]     |
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stderr] 282 | struct Counter {
[INFO] [stdout] 
[INFO] [stderr]     |        ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function `new` is never used
[INFO] [stderr]    --> src/function_closures.rs:287:8
[INFO] [stderr]     |
[INFO] [stderr] 286 | impl Counter {
[INFO] [stderr]     | ------------ associated function in this implementation
[INFO] [stderr] 287 |     fn new() -> Counter {
[INFO] [stderr]     |        ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `rust_project_demo` (test "integration_test") generated 1 warning (run `cargo fix --test "integration_test"` to apply 1 suggestion)
[INFO] [stderr] warning: `rust_project_demo` (test "another_integration_test") generated 1 warning (run `cargo fix --test "another_integration_test"` to apply 1 suggestion)
[INFO] [stderr] warning: `rust_project_demo` (test "result_test") generated 1 warning
[INFO] [stderr] warning: `rust_project_demo` (bin "rust_project_demo") generated 50 warnings (44 duplicates)
[INFO] [stderr] warning: `rust_project_demo` (lib test) generated 1 warning (1 duplicate)
[INFO] [stderr]     Finished `test` profile [optimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/rust_project_demo-3663dc4aab4f23c7)
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/rust_project_demo-7fcbf7193feaf11a)
[INFO] [stdout] 
[INFO] [stdout] running 11 tests
[INFO] [stdout] test function_closures::tests::call_with_different_vaules ... ok
[INFO] [stdout] test function_closures::tests::consumer_iterator ... ok
[INFO] [stdout] test function_closures::tests::iterator_demonstration ... ok
[INFO] [stdout] test accepting_command_line_arguments::tests::one_result ... ok
[INFO] [stdout] test function_closures::tests::using_iterator_trait_method ... ok
[INFO] [stdout] test function_closures::tests::iterator_sum ... ok
[INFO] [stdout] test r#struct::tests::larger_can_hold_smaller ... ignored
[INFO] [stdout] test r#struct::tests::it_works ... ok
[INFO] [stdout] test r#struct::tests::it_adds_two ... ok
[INFO] [stdout] test r#struct::tests::greeting_contains_name ... FAILED
[INFO] [stdout] test r#struct::tests::another ... FAILED
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- r#struct::tests::greeting_contains_name stdout ----
[INFO] [stdout] 
[INFO] [stdout] thread 'r#struct::tests::greeting_contains_name' panicked at src/struct.rs:100:9:
[INFO] [stdout] Greeting did not contain name, value was `Hello!`
[INFO] [stdout] stack backtrace:
[INFO] [stdout]    0:     0x5d693c9f20e2 - std::backtrace_rs::backtrace::libunwind::trace::h2d45396358f41939
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9
[INFO] [stdout]    1:     0x5d693c9f20e2 - std::backtrace_rs::backtrace::trace_unsynchronized::hffcefc0b67f1d6e2
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
[INFO] [stdout]    2:     0x5d693c9f20e2 - std::sys::backtrace::_print_fmt::hd72f71d23b436b92
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/sys/backtrace.rs:66:9
[INFO] [stdout]    3:     0x5d693c9f20e2 - <std::sys::backtrace::BacktraceLock::print::DisplayBacktrace as core::fmt::Display>::fmt::hdcfcb6d4c8489523
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/sys/backtrace.rs:39:26
[INFO] [stdout]    4:     0x5d693ca172e3 - core::fmt::rt::Argument::fmt::h2c56b3114963061a
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/core/src/fmt/rt.rs:173:76
[INFO] [stdout]    5:     0x5d693ca172e3 - core::fmt::write::h8a494366950f23bb
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/core/src/fmt/mod.rs:1468:25
[INFO] [stdout]    6:     0x5d693c9ef063 - std::io::default_write_fmt::h7b8824096454f323
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/io/mod.rs:639:11
[INFO] [stdout]    7:     0x5d693c9ef063 - std::io::Write::write_fmt::h4e71294925c334d0
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/io/mod.rs:1954:13
[INFO] [stdout]    8:     0x5d693c9f1f32 - std::sys::backtrace::BacktraceLock::print::hb2a626a81e06b2dc
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/sys/backtrace.rs:42:9
[INFO] [stdout]    9:     0x5d693c9f3659 - std::panicking::default_hook::{{closure}}::h4f78485264f12d10
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panicking.rs:300:27
[INFO] [stdout]   10:     0x5d693c9f348e - std::panicking::default_hook::h2c66fc99e962531d
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panicking.rs:324:9
[INFO] [stdout]   11:     0x5d693c9bba64 - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::hb6bd65493727d71a
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/alloc/src/boxed.rs:1985:9
[INFO] [stdout]   12:     0x5d693c9bba64 - test::test_main_with_exit_callback::{{closure}}::h60217ec76a0ece4a
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/test/src/lib.rs:145:21
[INFO] [stdout]   13:     0x5d693c9f402e - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::h318e4efb8c1a5689
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/alloc/src/boxed.rs:1985:9
[INFO] [stdout]   14:     0x5d693c9f402e - std::panicking::rust_panic_with_hook::h33ac55f64bbd807d
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panicking.rs:841:13
[INFO] [stdout]   15:     0x5d693c9f3dfa - std::panicking::begin_panic_handler::{{closure}}::h30e7cb89678a57fe
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panicking.rs:706:13
[INFO] [stdout]   16:     0x5d693c9f25d9 - std::sys::backtrace::__rust_end_short_backtrace::hed60f27456c16ced
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/sys/backtrace.rs:174:18
[INFO] [stdout]   17:     0x5d693c9f3a8d - __rustc[de2ca18b4c54d5b8]::rust_begin_unwind
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panicking.rs:697:5
[INFO] [stdout]   18:     0x5d693ca15e00 - core::panicking::panic_fmt::h62f63d096dd276af
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/core/src/panicking.rs:75:14
[INFO] [stdout]   19:     0x5d693c982445 - rust_project_demo::struct::tests::greeting_contains_name::he159550d2c32218e
[INFO] [stdout]                                at /opt/rustwide/workdir/src/struct.rs:100:9
[INFO] [stdout]   20:     0x5d693c980339 - rust_project_demo::struct::tests::greeting_contains_name::{{closure}}::h20522b28ab27cde5
[INFO] [stdout]                                at /opt/rustwide/workdir/src/struct.rs:98:32
[INFO] [stdout]   21:     0x5d693c980339 - core::ops::function::FnOnce::call_once::hbb03d8ca7b6879af
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/core/src/ops/function.rs:253:5
[INFO] [stdout]   22:     0x5d693c9c12cb - core::ops::function::FnOnce::call_once::h1f9474f1347fff52
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/core/src/ops/function.rs:253:5
[INFO] [stdout]   23:     0x5d693c9c12cb - test::__rust_begin_short_backtrace::ha52ab26e77157f03
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/test/src/lib.rs:648:18
[INFO] [stdout]   24:     0x5d693c9c0405 - test::run_test_in_process::{{closure}}::h229c1a11a50b261f
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/test/src/lib.rs:671:74
[INFO] [stdout]   25:     0x5d693c9c0405 - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h78821afbf97b39a9
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/core/src/panic/unwind_safe.rs:272:9
[INFO] [stdout]   26:     0x5d693c9c0405 - std::panicking::catch_unwind::do_call::h53abf3ed5bd32ba3
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panicking.rs:589:40
[INFO] [stdout]   27:     0x5d693c9c0405 - std::panicking::catch_unwind::h6deb5fe1e91873c9
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panicking.rs:552:19
[INFO] [stdout]   28:     0x5d693c9c0405 - std::panic::catch_unwind::hea0829b6b565654b
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panic.rs:359:14
[INFO] [stdout]   29:     0x5d693c9c0405 - test::run_test_in_process::hdc44dfecea3db21b
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/test/src/lib.rs:671:27
[INFO] [stdout]   30:     0x5d693c9c0405 - test::run_test::{{closure}}::h0364ba59bf23f652
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/test/src/lib.rs:592:43
[INFO] [stdout]   31:     0x5d693c984004 - test::run_test::{{closure}}::h32730b304eec05da
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/test/src/lib.rs:622:41
[INFO] [stdout]   32:     0x5d693c984004 - std::sys::backtrace::__rust_begin_short_backtrace::h177cb952fc54ad2c
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/sys/backtrace.rs:158:18
[INFO] [stdout]   33:     0x5d693c9879da - std::thread::Builder::spawn_unchecked_::{{closure}}::{{closure}}::h119d903520007597
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/thread/mod.rs:559:17
[INFO] [stdout]   34:     0x5d693c9879da - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::hab88401d606702a6
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/core/src/panic/unwind_safe.rs:272:9
[INFO] [stdout]   35:     0x5d693c9879da - std::panicking::catch_unwind::do_call::h163fe12cca9901c2
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panicking.rs:589:40
[INFO] [stdout]   36:     0x5d693c9879da - std::panicking::catch_unwind::he81557d0e17cc1bc
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panicking.rs:552:19
[INFO] [stdout]   37:     0x5d693c9879da - std::panic::catch_unwind::hc2b8e79c20593955
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panic.rs:359:14
[INFO] [stdout]   38:     0x5d693c9879da - std::thread::Builder::spawn_unchecked_::{{closure}}::hfa6b4978e07815cc
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/thread/mod.rs:557:30
[INFO] [stdout]   39:     0x5d693c9879da - core::ops::function::FnOnce::call_once{{vtable.shim}}::hddcd7484a13fd793
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/core/src/ops/function.rs:253:5
[INFO] [stdout]   40:     0x5d693c9f6faf - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h5924238c754de3b8
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/alloc/src/boxed.rs:1971:9
[INFO] [stdout]   41:     0x5d693c9f6faf - std::sys::pal::unix::thread::Thread::new::thread_start::hb6e99e73da4d28f8
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/sys/pal/unix/thread.rs:107:17
[INFO] [stdout]   42:     0x712683099aa4 - <unknown>
[INFO] [stdout]   43:     0x712683126a34 - clone
[INFO] [stdout]   44:                0x0 - <unknown>
[INFO] [stdout] 
[INFO] [stdout] ---- r#struct::tests::another stdout ----
[INFO] [stdout] 
[INFO] [stdout] thread 'r#struct::tests::another' panicked at src/struct.rs:69:9:
[INFO] [stdout] Make this test fail
[INFO] [stdout] stack backtrace:
[INFO] [stdout]    0:     0x5d693c9f20e2 - std::backtrace_rs::backtrace::libunwind::trace::h2d45396358f41939
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9
[INFO] [stdout]    1:     0x5d693c9f20e2 - std::backtrace_rs::backtrace::trace_unsynchronized::hffcefc0b67f1d6e2
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
[INFO] [stdout]    2:     0x5d693c9f20e2 - std::sys::backtrace::_print_fmt::hd72f71d23b436b92
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/sys/backtrace.rs:66:9
[INFO] [stdout]    3:     0x5d693c9f20e2 - <std::sys::backtrace::BacktraceLock::print::DisplayBacktrace as core::fmt::Display>::fmt::hdcfcb6d4c8489523
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/sys/backtrace.rs:39:26
[INFO] [stdout]    4:     0x5d693ca172e3 - core::fmt::rt::Argument::fmt::h2c56b3114963061a
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/core/src/fmt/rt.rs:173:76
[INFO] [stdout]    5:     0x5d693ca172e3 - core::fmt::write::h8a494366950f23bb
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/core/src/fmt/mod.rs:1468:25
[INFO] [stdout]    6:     0x5d693c9ef063 - std::io::default_write_fmt::h7b8824096454f323
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/io/mod.rs:639:11
[INFO] [stdout]    7:     0x5d693c9ef063 - std::io::Write::write_fmt::h4e71294925c334d0
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/io/mod.rs:1954:13
[INFO] [stdout]    8:     0x5d693c9f1f32 - std::sys::backtrace::BacktraceLock::print::hb2a626a81e06b2dc
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/sys/backtrace.rs:42:9
[INFO] [stdout]    9:     0x5d693c9f3659 - std::panicking::default_hook::{{closure}}::h4f78485264f12d10
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panicking.rs:300:27
[INFO] [stdout]   10:     0x5d693c9f348e - std::panicking::default_hook::h2c66fc99e962531d
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panicking.rs:324:9
[INFO] [stdout]   11:     0x5d693c9bba64 - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::hb6bd65493727d71a
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/alloc/src/boxed.rs:1985:9
[INFO] [stdout]   12:     0x5d693c9bba64 - test::test_main_with_exit_callback::{{closure}}::h60217ec76a0ece4a
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/test/src/lib.rs:145:21
[INFO] [stdout]   13:     0x5d693c9f402e - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::h318e4efb8c1a5689
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/alloc/src/boxed.rs:1985:9
[INFO] [stdout]   14:     0x5d693c9f402e - std::panicking::rust_panic_with_hook::h33ac55f64bbd807d
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panicking.rs:841:13
[INFO] [stdout]   15:     0x5d693c9f3dc6 - std::panicking::begin_panic_handler::{{closure}}::h30e7cb89678a57fe
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panicking.rs:699:13
[INFO] [stdout]   16:     0x5d693c9f25d9 - std::sys::backtrace::__rust_end_short_backtrace::hed60f27456c16ced
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/sys/backtrace.rs:174:18
[INFO] [stdout]   17:     0x5d693c9f3a8d - __rustc[de2ca18b4c54d5b8]::rust_begin_unwind
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panicking.rs:697:5
[INFO] [stdout]   18:     0x5d693ca15e00 - core::panicking::panic_fmt::h62f63d096dd276af
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/core/src/panicking.rs:75:14
[INFO] [stdout]   19:     0x5d693c98205c - rust_project_demo::struct::tests::another::hf31af25ada4e3197
[INFO] [stdout]                                at /opt/rustwide/workdir/src/struct.rs:69:9
[INFO] [stdout]   20:     0x5d693c980376 - rust_project_demo::struct::tests::another::{{closure}}::h246c89f05c32a07b
[INFO] [stdout]                                at /opt/rustwide/workdir/src/struct.rs:68:17
[INFO] [stdout]   21:     0x5d693c980376 - core::ops::function::FnOnce::call_once::hd558b29a233e67e3
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/core/src/ops/function.rs:253:5
[INFO] [stdout]   22:     0x5d693c9c12cb - core::ops::function::FnOnce::call_once::h1f9474f1347fff52
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/core/src/ops/function.rs:253:5
[INFO] [stdout]   23:     0x5d693c9c12cb - test::__rust_begin_short_backtrace::ha52ab26e77157f03
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/test/src/lib.rs:648:18
[INFO] [stdout]   24:     0x5d693c9c0405 - test::run_test_in_process::{{closure}}::h229c1a11a50b261f
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/test/src/lib.rs:671:74
[INFO] [stdout]   25:     0x5d693c9c0405 - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h78821afbf97b39a9
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/core/src/panic/unwind_safe.rs:272:9
[INFO] [stdout]   26:     0x5d693c9c0405 - std::panicking::catch_unwind::do_call::h53abf3ed5bd32ba3
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panicking.rs:589:40
[INFO] [stdout]   27:     0x5d693c9c0405 - std::panicking::catch_unwind::h6deb5fe1e91873c9
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panicking.rs:552:19
[INFO] [stdout]   28:     0x5d693c9c0405 - std::panic::catch_unwind::hea0829b6b565654b
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panic.rs:359:14
[INFO] [stdout]   29:     0x5d693c9c0405 - test::run_test_in_process::hdc44dfecea3db21b
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/test/src/lib.rs:671:27
[INFO] [stdout]   30:     0x5d693c9c0405 - test::run_test::{{closure}}::h0364ba59bf23f652
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/test/src/lib.rs:592:43
[INFO] [stdout]   31:     0x5d693c984004 - test::run_test::{{closure}}::h32730b304eec05da
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/test/src/lib.rs:622:41
[INFO] [stdout]   32:     0x5d693c984004 - std::sys::backtrace::__rust_begin_short_backtrace::h177cb952fc54ad2c
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/sys/backtrace.rs:158:18
[INFO] [stdout]   33:     0x5d693c9879da - std::thread::Builder::spawn_unchecked_::{{closure}}::{{closure}}::h119d903520007597
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/thread/mod.rs:559:17
[INFO] [stdout]   34:     0x5d693c9879da - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::hab88401d606702a6
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/core/src/panic/unwind_safe.rs:272:9
[INFO] [stdout]   35:     0x5d693c9879da - std::panicking::catch_unwind::do_call::h163fe12cca9901c2
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panicking.rs:589:40
[INFO] [stdout]   36:     0x5d693c9879da - std::panicking::catch_unwind::he81557d0e17cc1bc
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panicking.rs:552:19
[INFO] [stdout]   37:     0x5d693c9879da - std::panic::catch_unwind::hc2b8e79c20593955
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panic.rs:359:14
[INFO] [stdout]   38:     0x5d693c9879da - std::thread::Builder::spawn_unchecked_::{{closure}}::hfa6b4978e07815cc
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/thread/mod.rs:557:30
[INFO] [stdout]   39:     0x5d693c9879da - core::ops::function::FnOnce::call_once{{vtable.shim}}::hddcd7484a13fd793
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/core/src/ops/function.rs:253:5
[INFO] [stdout]   40:     0x5d693c9f6faf - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h5924238c754de3b8
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/alloc/src/boxed.rs:1971:9
[INFO] [stdout]   41:     0x5d693c9f6faf - std::sys::pal::unix::thread::Thread::new::thread_start::hb6e99e73da4d28f8
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/sys/pal/unix/thread.rs:107:17
[INFO] [stdout]   42:     0x712683099aa4 - <unknown>
[INFO] [stdout]   43:     0x712683126a34 - clone
[INFO] [stdout]   44:                0x0 - <unknown>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout]     r#struct::tests::another
[INFO] [stdout]     r#struct::tests::greeting_contains_name
[INFO] [stdout] 
[INFO] [stdout] test result: FAILED. 8 passed; 2 failed; 1 ignored; 0 measured; 0 filtered out; finished in 0.02s
[INFO] [stdout] 
[INFO] [stderr] error: test failed, to rerun pass `--bin rust_project_demo`
[INFO] running `Command { std: "docker" "inspect" "d8358b42d40230f35de0fdbcec16723b6ea5beb1c8f04619890f65c4c1576c17", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d8358b42d40230f35de0fdbcec16723b6ea5beb1c8f04619890f65c4c1576c17", kill_on_drop: false }`
[INFO] [stdout] d8358b42d40230f35de0fdbcec16723b6ea5beb1c8f04619890f65c4c1576c17
