[INFO] cloning repository https://github.com/BishwasXD/Rusty
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/BishwasXD/Rusty" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FBishwasXD%2FRusty", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FBishwasXD%2FRusty'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] af04c9a36c264d0f4d3f4d0c4449e851e909c3f4
[INFO] testing BishwasXD/Rusty against 1.90.0 for beta-1.91-2
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FBishwasXD%2FRusty" "/workspace/builds/worker-6-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/BishwasXD/Rusty
[INFO] finished tweaking git repo https://github.com/BishwasXD/Rusty
[INFO] tweaked toml for git repo https://github.com/BishwasXD/Rusty written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/BishwasXD/Rusty 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 git repo https://github.com/BishwasXD/Rusty 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]  Downloading crates ...
[INFO] [stderr]   Downloaded flate2 v1.0.34
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] 3d1a6967f84b9be24e1e392042a233952558c703b082e6dadfbe90f5d86fc7c6
[INFO] running `Command { std: "docker" "start" "-a" "3d1a6967f84b9be24e1e392042a233952558c703b082e6dadfbe90f5d86fc7c6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3d1a6967f84b9be24e1e392042a233952558c703b082e6dadfbe90f5d86fc7c6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3d1a6967f84b9be24e1e392042a233952558c703b082e6dadfbe90f5d86fc7c6", kill_on_drop: false }`
[INFO] [stdout] 3d1a6967f84b9be24e1e392042a233952558c703b082e6dadfbe90f5d86fc7c6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] c9d9b8facd3139e2f31367bc784b23d941cef5c09027961b08f1b2fd269ebf5d
[INFO] running `Command { std: "docker" "start" "-a" "c9d9b8facd3139e2f31367bc784b23d941cef5c09027961b08f1b2fd269ebf5d", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.92
[INFO] [stderr]    Compiling unicode-ident v1.0.14
[INFO] [stderr]    Compiling adler2 v2.0.0
[INFO] [stderr]    Compiling pin-project-lite v0.2.15
[INFO] [stderr]    Compiling crc32fast v1.4.2
[INFO] [stderr]    Compiling miniz_oxide v0.8.0
[INFO] [stderr]    Compiling quote v1.0.37
[INFO] [stderr]    Compiling flate2 v1.0.34
[INFO] [stderr]    Compiling syn v2.0.91
[INFO] [stderr]    Compiling tokio-macros v2.4.0
[INFO] [stderr]    Compiling tokio v1.42.0
[INFO] [stderr]    Compiling learn-rust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::collections::HashMap`
[INFO] [stdout]  --> src/collections/hashmap.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::collections::HashMap; //hashMap is not as popular as compared to string and vectors so it is not brought into scope automatically.
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::process`
[INFO] [stdout]  --> src/error_handling/recoverable_errors.rs:4:9
[INFO] [stdout]   |
[INFO] [stdout] 4 |     use std::process;
[INFO] [stdout]   |         ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::ownership`
[INFO] [stdout]  --> src/smart_pointers/box_pointers.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use crate::ownership;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type `_user3` should have an upper camel case name
[INFO] [stdout]  --> src/structs/structures.rs:4:8
[INFO] [stdout]   |
[INFO] [stdout] 4 | struct _user3 {
[INFO] [stdout]   |        ^^^^^^ help: convert the identifier to upper camel case: `User3`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(non_camel_case_types)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `v4` should have an upper camel case name
[INFO] [stdout]   --> src/enums/enums.rs:12:9
[INFO] [stdout]    |
[INFO] [stdout] 12 |         v4,
[INFO] [stdout]    |         ^^ help: convert the identifier to upper camel case (notice the capitalization): `V4`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `v6` should have an upper camel case name
[INFO] [stdout]   --> src/enums/enums.rs:13:9
[INFO] [stdout]    |
[INFO] [stdout] 13 |         v6,
[INFO] [stdout]    |         ^^ help: convert the identifier to upper camel case (notice the capitalization): `V6`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::process::Output`
[INFO] [stdout]  --> src/simple_programs/compression.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 | use std::process::Output;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `s`
[INFO] [stdout]  --> src/collections/strings.rs:8:17
[INFO] [stdout]   |
[INFO] [stdout] 8 |         let mut s = String::new();
[INFO] [stdout]   |                 ^ help: if this is intentional, prefix it with an underscore: `_s`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `loded_String`
[INFO] [stdout]   --> src/collections/strings.rs:14:17
[INFO] [stdout]    |
[INFO] [stdout] 14 |         let mut loded_String: String = initia_data.to_string();
[INFO] [stdout]    |                 ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_loded_String`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `concat`
[INFO] [stdout]   --> src/collections/strings.rs:36:13
[INFO] [stdout]    |
[INFO] [stdout] 36 |         let concat: String = str_1 + &str_2;
[INFO] [stdout]    |             ^^^^^^ help: if this is intentional, prefix it with an underscore: `_concat`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `new_string`
[INFO] [stdout]   --> src/collections/strings.rs:54:13
[INFO] [stdout]    |
[INFO] [stdout] 54 |         let new_string = String::from("New String");
[INFO] [stdout]    |             ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_new_string`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]  --> src/collections/strings.rs:8:13
[INFO] [stdout]   |
[INFO] [stdout] 8 |         let mut s = String::new();
[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: variable does not need to be mutable
[INFO] [stdout]   --> src/collections/strings.rs:14:13
[INFO] [stdout]    |
[INFO] [stdout] 14 |         let mut loded_String: String = initia_data.to_string();
[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/collections/vectors.rs:41:13
[INFO] [stdout]    |
[INFO] [stdout] 41 |         let mut ref_vec: Vec<i32> = vec![1, 2, 3, 4, 5];
[INFO] [stdout]    |             ----^^^^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `num`
[INFO] [stdout]   --> src/collections/vectors.rs:62:13
[INFO] [stdout]    |
[INFO] [stdout] 62 |         for num in &v {
[INFO] [stdout]    |             ^^^ help: if this is intentional, prefix it with an underscore: `_num`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `h`
[INFO] [stdout]   --> src/error_handling/recoverable_errors.rs:39:20
[INFO] [stdout]    |
[INFO] [stdout] 39 |                 Ok(h) => println!("write operation completed"),
[INFO] [stdout]    |                    ^ help: if this is intentional, prefix it with an underscore: `_h`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `fc`
[INFO] [stdout]   --> src/error_handling/recoverable_errors.rs:48:24
[INFO] [stdout]    |
[INFO] [stdout] 48 |                     Ok(fc) => {
[INFO] [stdout]    |                        ^^ help: if this is intentional, prefix it with an underscore: `_fc`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `new_file`
[INFO] [stdout]   --> src/error_handling/recoverable_errors.rs:65:9
[INFO] [stdout]    |
[INFO] [stdout] 65 |     let new_file = File::open("new_file.txt").unwrap_or_else(|error| {
[INFO] [stdout]    |         ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_new_file`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `e_file`
[INFO] [stdout]   --> src/error_handling/recoverable_errors.rs:84:5
[INFO] [stdout]    |
[INFO] [stdout] 84 | let e_file = File::open("e.txt").expect("e.txt File should exist before executing further");//terminates the execution
[INFO] [stdout]    |     ^^^^^^ help: if this is intentional, prefix it with an underscore: `_e_file`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `d_val`
[INFO] [stdout]    --> src/smart_pointers/box_pointers.rs:117:7
[INFO] [stdout]     |
[INFO] [stdout] 117 |   let d_val = MyBox::new(30); 
[INFO] [stdout]     |       ^^^^^ help: if this is intentional, prefix it with an underscore: `_d_val`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `black`
[INFO] [stdout]   --> src/structs/structures.rs:69:9
[INFO] [stdout]    |
[INFO] [stdout] 69 |     let black = Color(2, 3, 4);
[INFO] [stdout]    |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_black`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `v6_example`
[INFO] [stdout]   --> src/enums/enums.rs:45:9
[INFO] [stdout]    |
[INFO] [stdout] 45 |     let v6_example = IpAddress {
[INFO] [stdout]    |         ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_v6_example`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `ip_addr`
[INFO] [stdout]   --> src/enums/enums.rs:24:21
[INFO] [stdout]    |
[INFO] [stdout] 24 |     fn handle_route(ip_addr: _IpAddrkind) {
[INFO] [stdout]    |                     ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_ip_addr`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]    --> src/match_basics/match_basics.rs:151:9
[INFO] [stdout]     |
[INFO] [stdout] 151 |         _ => (), //nothing happens if it isnt 3 or 7
[INFO] [stdout]     |         ^ no value can reach this
[INFO] [stdout]     |
[INFO] [stdout] note: multiple earlier patterns match some of the same values
[INFO] [stdout]    --> src/match_basics/match_basics.rs:151:9
[INFO] [stdout]     |
[INFO] [stdout] 145 |         3 => add_fancy_hat(),
[INFO] [stdout]     |         - matches some of the same values
[INFO] [stdout] 146 |         7 => remove_fancy_hat(),
[INFO] [stdout]     |         - matches some of the same values
[INFO] [stdout] 147 |         _ => reroll(), //here '_' is a special pattern that matches any value and doesnot bind to
[INFO] [stdout]     |         - matches some of the same values
[INFO] [stdout] ...
[INFO] [stdout] 151 |         _ => (), //nothing happens if it isnt 3 or 7
[INFO] [stdout]     |         ^ collectively making this unreachable
[INFO] [stdout]     = note: `#[warn(unreachable_patterns)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `six`
[INFO] [stdout]    --> src/match_basics/match_basics.rs:137:9
[INFO] [stdout]     |
[INFO] [stdout] 137 |     let six = pluss_one(five);
[INFO] [stdout]     |         ^^^ help: if this is intentional, prefix it with an underscore: `_six`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `none`
[INFO] [stdout]    --> src/match_basics/match_basics.rs:138:9
[INFO] [stdout]     |
[INFO] [stdout] 138 |     let none = pluss_one(None);
[INFO] [stdout]     |         ^^^^ help: if this is intentional, prefix it with an underscore: `_none`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `num_spaces`
[INFO] [stdout]    --> src/match_basics/match_basics.rs:155:20
[INFO] [stdout]     |
[INFO] [stdout] 155 |     fn move_player(num_spaces: u8) {}
[INFO] [stdout]     |                    ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_num_spaces`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `start`
[INFO] [stdout]   --> src/simple_programs/compression.rs:22:9
[INFO] [stdout]    |
[INFO] [stdout] 22 |     let start = Instant::now();
[INFO] [stdout]    |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_start`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `item`
[INFO] [stdout]   --> src/generic_traits_lifetime/generics.rs:27:13
[INFO] [stdout]    |
[INFO] [stdout] 27 |         for item in list {
[INFO] [stdout]    |             ^^^^ help: if this is intentional, prefix it with an underscore: `_item`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/generic_traits_lifetime/generics.rs:26:13
[INFO] [stdout]    |
[INFO] [stdout] 26 |         let mut largest = &list[0];
[INFO] [stdout]    |             ----^^^^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/collections/vectors.rs:84:19
[INFO] [stdout]    |
[INFO] [stdout] 84 |             Float(f32),
[INFO] [stdout]    |             ----- ^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             field in this variant
[INFO] [stdout]    |
[INFO] [stdout]    = note: `SpreadSheetCell` 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 field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]    |
[INFO] [stdout] 84 -             Float(f32),
[INFO] [stdout] 84 +             Float(()),
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/collections/vectors.rs:85:18
[INFO] [stdout]    |
[INFO] [stdout] 85 |             Text(String)
[INFO] [stdout]    |             ---- ^^^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             field in this variant
[INFO] [stdout]    |
[INFO] [stdout]    = note: `SpreadSheetCell` 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] 85 -             Text(String)
[INFO] [stdout] 85 +             Text(())
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Result` is never used
[INFO] [stdout]   --> src/error_handling/recoverable_errors.rs:10:14
[INFO] [stdout]    |
[INFO] [stdout] 10 |         enum Result<T, E>{
[INFO] [stdout]    |              ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `macros` is never used
[INFO] [stdout]  --> src/macros/macros.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn macros(){
[INFO] [stdout]   |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `associated_fns` is never used
[INFO] [stdout]   --> src/structs/structures.rs:72:8
[INFO] [stdout]    |
[INFO] [stdout] 72 | pub fn associated_fns() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `calc_area`, `check_square`, `return_self`, and `square` are never used
[INFO] [stdout]   --> src/structs/structures.rs:83:12
[INFO] [stdout]    |
[INFO] [stdout] 82 |     impl Rectangle {
[INFO] [stdout]    |     -------------- associated items in this implementation
[INFO] [stdout] 83 |         fn calc_area(&self) -> u32 {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 86 |         fn check_square(&self) -> bool {
[INFO] [stdout]    |            ^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 90 |         fn return_self(self) -> Self {
[INFO] [stdout]    |            ^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 95 |         fn square(size: u32) -> Self {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `enums_basics` is never used
[INFO] [stdout]  --> src/enums/enums.rs:7:8
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub fn enums_basics() {
[INFO] [stdout]   |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `handle_routing` is never used
[INFO] [stdout]   --> src/enums/enums.rs:35:12
[INFO] [stdout]    |
[INFO] [stdout] 34 |     impl IpAddress {
[INFO] [stdout]    |     -------------- method in this implementation
[INFO] [stdout] 35 |         fn handle_routing(&self) -> bool {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `apply_color` is never used
[INFO] [stdout]   --> src/enums/enums.rs:92:12
[INFO] [stdout]    |
[INFO] [stdout] 91 |     impl Message {
[INFO] [stdout]    |     ------------ method in this implementation
[INFO] [stdout] 92 |         fn apply_color(&self) -> bool {
[INFO] [stdout]    |            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `match_basics` is never used
[INFO] [stdout]  --> src/match_basics/match_basics.rs:4:8
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub fn match_basics(){
[INFO] [stdout]   |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `build_pattern` is never used
[INFO] [stdout]  --> src/simple_programs/build_pattern.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn build_pattern(blueprint: &str) -> String {
[INFO] [stdout]   |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `compression` is never used
[INFO] [stdout]   --> src/simple_programs/compression.rs:14:8
[INFO] [stdout]    |
[INFO] [stdout] 14 | pub fn compression() {
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `check` is never used
[INFO] [stdout]   --> src/main.rs:51:12
[INFO] [stdout]    |
[INFO] [stdout] 51 |     pub fn check() {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `add` is never used
[INFO] [stdout]  --> src/writing_test/tests.rs:5:8
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub fn add(left: usize, right: usize) -> usize {
[INFO] [stdout]   |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Rectangle` is never constructed
[INFO] [stdout]   --> src/writing_test/tests.rs:37:8
[INFO] [stdout]    |
[INFO] [stdout] 37 | struct Rectangle {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `can_hold` is never used
[INFO] [stdout]   --> src/writing_test/tests.rs:44:8
[INFO] [stdout]    |
[INFO] [stdout] 43 | impl Rectangle{
[INFO] [stdout]    | -------------- method in this implementation
[INFO] [stdout] 44 |     fn can_hold(&self,other:Rectangle)->bool{
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Rectangle` is never constructed
[INFO] [stdout]  --> src/writing_test/tests2.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | struct Rectangle {
[INFO] [stdout]   |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `can_hold` is never used
[INFO] [stdout]   --> src/writing_test/tests2.rs:10:8
[INFO] [stdout]    |
[INFO] [stdout]  9 | impl Rectangle{
[INFO] [stdout]    | -------------- method in this implementation
[INFO] [stdout] 10 |     fn can_hold(&self,other:Rectangle)->bool{
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `generics` is never used
[INFO] [stdout]  --> src/generic_traits_lifetime/generics.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub fn generics() {
[INFO] [stdout]   |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `x` is never used
[INFO] [stdout]   --> src/generic_traits_lifetime/generics.rs:65:12
[INFO] [stdout]    |
[INFO] [stdout] 64 |     impl<T> Points<T> {
[INFO] [stdout]    |     ----------------- method in this implementation
[INFO] [stdout] 65 |         fn x(&self) -> &T {
[INFO] [stdout]    |            ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `mixup` is never used
[INFO] [stdout]   --> src/generic_traits_lifetime/generics.rs:75:12
[INFO] [stdout]    |
[INFO] [stdout] 74 |     impl<X1, Y1> Pointss<X1, Y1> {
[INFO] [stdout]    |     ---------------------------- method in this implementation
[INFO] [stdout] 75 |         fn mixup<X2, Y2>(self, other: Pointss<X2, Y2>) -> Pointss<X1, Y2> {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `concurrency` is never used
[INFO] [stdout]  --> src/concurrencies/concurrency.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub fn concurrency() {
[INFO] [stdout]   |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `loded_String` should have a snake case name
[INFO] [stdout]   --> src/collections/strings.rs:14:17
[INFO] [stdout]    |
[INFO] [stdout] 14 |         let mut loded_String: String = initia_data.to_string();
[INFO] [stdout]    |                 ^^^^^^^^^^^^ help: convert the identifier to snake case (notice the capitalization): `loded_string`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: module `Errors` should have a snake case name
[INFO] [stdout]  --> src/main.rs:7:13
[INFO] [stdout]   |
[INFO] [stdout] 7 |     pub mod Errors;
[INFO] [stdout]   |             ^^^^^^ help: convert the identifier to snake case: `errors`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: module `ErrorHandling` should have a snake case name
[INFO] [stdout]  --> src/error_handling/Errors.rs:1:10
[INFO] [stdout]   |
[INFO] [stdout] 1 |  pub mod ErrorHandling{
[INFO] [stdout]   |          ^^^^^^^^^^^^^ help: convert the identifier to snake case: `error_handling`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: module `RecoverableErrors` should have a snake case name
[INFO] [stdout]  --> src/error_handling/recoverable_errors.rs:2:9
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub mod RecoverableErrors{
[INFO] [stdout]   |         ^^^^^^^^^^^^^^^^^ help: convert the identifier to snake case: `recoverable_errors`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: module `UnrecoverableError` should have a snake case name
[INFO] [stdout]  --> src/error_handling/unrecoverable_errors.rs:1:9
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub mod UnrecoverableError{
[INFO] [stdout]   |         ^^^^^^^^^^^^^^^^^^ help: convert the identifier to snake case: `unrecoverable_error`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 11.53s
[INFO] running `Command { std: "docker" "inspect" "c9d9b8facd3139e2f31367bc784b23d941cef5c09027961b08f1b2fd269ebf5d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c9d9b8facd3139e2f31367bc784b23d941cef5c09027961b08f1b2fd269ebf5d", kill_on_drop: false }`
[INFO] [stdout] c9d9b8facd3139e2f31367bc784b23d941cef5c09027961b08f1b2fd269ebf5d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] 0828077c854e47c488e6d65e28104ba5490980a90eaf9c47d96b1f211f2ed68e
[INFO] running `Command { std: "docker" "start" "-a" "0828077c854e47c488e6d65e28104ba5490980a90eaf9c47d96b1f211f2ed68e", kill_on_drop: false }`
[INFO] [stderr]    Compiling learn-rust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::collections::HashMap`
[INFO] [stdout]  --> src/collections/hashmap.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::collections::HashMap; //hashMap is not as popular as compared to string and vectors so it is not brought into scope automatically.
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::process`
[INFO] [stdout]  --> src/error_handling/recoverable_errors.rs:4:9
[INFO] [stdout]   |
[INFO] [stdout] 4 |     use std::process;
[INFO] [stdout]   |         ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::ownership`
[INFO] [stdout]  --> src/smart_pointers/box_pointers.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use crate::ownership;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type `_user3` should have an upper camel case name
[INFO] [stdout]  --> src/structs/structures.rs:4:8
[INFO] [stdout]   |
[INFO] [stdout] 4 | struct _user3 {
[INFO] [stdout]   |        ^^^^^^ help: convert the identifier to upper camel case: `User3`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(non_camel_case_types)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `v4` should have an upper camel case name
[INFO] [stdout]   --> src/enums/enums.rs:12:9
[INFO] [stdout]    |
[INFO] [stdout] 12 |         v4,
[INFO] [stdout]    |         ^^ help: convert the identifier to upper camel case (notice the capitalization): `V4`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `v6` should have an upper camel case name
[INFO] [stdout]   --> src/enums/enums.rs:13:9
[INFO] [stdout]    |
[INFO] [stdout] 13 |         v6,
[INFO] [stdout]    |         ^^ help: convert the identifier to upper camel case (notice the capitalization): `V6`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::process::Output`
[INFO] [stdout]  --> src/simple_programs/compression.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 | use std::process::Output;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `s`
[INFO] [stdout]  --> src/collections/strings.rs:8:17
[INFO] [stdout]   |
[INFO] [stdout] 8 |         let mut s = String::new();
[INFO] [stdout]   |                 ^ help: if this is intentional, prefix it with an underscore: `_s`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `loded_String`
[INFO] [stdout]   --> src/collections/strings.rs:14:17
[INFO] [stdout]    |
[INFO] [stdout] 14 |         let mut loded_String: String = initia_data.to_string();
[INFO] [stdout]    |                 ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_loded_String`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `concat`
[INFO] [stdout]   --> src/collections/strings.rs:36:13
[INFO] [stdout]    |
[INFO] [stdout] 36 |         let concat: String = str_1 + &str_2;
[INFO] [stdout]    |             ^^^^^^ help: if this is intentional, prefix it with an underscore: `_concat`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `new_string`
[INFO] [stdout]   --> src/collections/strings.rs:54:13
[INFO] [stdout]    |
[INFO] [stdout] 54 |         let new_string = String::from("New String");
[INFO] [stdout]    |             ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_new_string`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]  --> src/collections/strings.rs:8:13
[INFO] [stdout]   |
[INFO] [stdout] 8 |         let mut s = String::new();
[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: variable does not need to be mutable
[INFO] [stdout]   --> src/collections/strings.rs:14:13
[INFO] [stdout]    |
[INFO] [stdout] 14 |         let mut loded_String: String = initia_data.to_string();
[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/collections/vectors.rs:41:13
[INFO] [stdout]    |
[INFO] [stdout] 41 |         let mut ref_vec: Vec<i32> = vec![1, 2, 3, 4, 5];
[INFO] [stdout]    |             ----^^^^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `num`
[INFO] [stdout]   --> src/collections/vectors.rs:62:13
[INFO] [stdout]    |
[INFO] [stdout] 62 |         for num in &v {
[INFO] [stdout]    |             ^^^ help: if this is intentional, prefix it with an underscore: `_num`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `h`
[INFO] [stdout]   --> src/error_handling/recoverable_errors.rs:39:20
[INFO] [stdout]    |
[INFO] [stdout] 39 |                 Ok(h) => println!("write operation completed"),
[INFO] [stdout]    |                    ^ help: if this is intentional, prefix it with an underscore: `_h`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `fc`
[INFO] [stdout]   --> src/error_handling/recoverable_errors.rs:48:24
[INFO] [stdout]    |
[INFO] [stdout] 48 |                     Ok(fc) => {
[INFO] [stdout]    |                        ^^ help: if this is intentional, prefix it with an underscore: `_fc`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `new_file`
[INFO] [stdout]   --> src/error_handling/recoverable_errors.rs:65:9
[INFO] [stdout]    |
[INFO] [stdout] 65 |     let new_file = File::open("new_file.txt").unwrap_or_else(|error| {
[INFO] [stdout]    |         ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_new_file`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `e_file`
[INFO] [stdout]   --> src/error_handling/recoverable_errors.rs:84:5
[INFO] [stdout]    |
[INFO] [stdout] 84 | let e_file = File::open("e.txt").expect("e.txt File should exist before executing further");//terminates the execution
[INFO] [stdout]    |     ^^^^^^ help: if this is intentional, prefix it with an underscore: `_e_file`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `d_val`
[INFO] [stdout]    --> src/smart_pointers/box_pointers.rs:117:7
[INFO] [stdout]     |
[INFO] [stdout] 117 |   let d_val = MyBox::new(30); 
[INFO] [stdout]     |       ^^^^^ help: if this is intentional, prefix it with an underscore: `_d_val`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `black`
[INFO] [stdout]   --> src/structs/structures.rs:69:9
[INFO] [stdout]    |
[INFO] [stdout] 69 |     let black = Color(2, 3, 4);
[INFO] [stdout]    |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_black`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `v6_example`
[INFO] [stdout]   --> src/enums/enums.rs:45:9
[INFO] [stdout]    |
[INFO] [stdout] 45 |     let v6_example = IpAddress {
[INFO] [stdout]    |         ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_v6_example`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `ip_addr`
[INFO] [stdout]   --> src/enums/enums.rs:24:21
[INFO] [stdout]    |
[INFO] [stdout] 24 |     fn handle_route(ip_addr: _IpAddrkind) {
[INFO] [stdout]    |                     ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_ip_addr`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]    --> src/match_basics/match_basics.rs:151:9
[INFO] [stdout]     |
[INFO] [stdout] 151 |         _ => (), //nothing happens if it isnt 3 or 7
[INFO] [stdout]     |         ^ no value can reach this
[INFO] [stdout]     |
[INFO] [stdout] note: multiple earlier patterns match some of the same values
[INFO] [stdout]    --> src/match_basics/match_basics.rs:151:9
[INFO] [stdout]     |
[INFO] [stdout] 145 |         3 => add_fancy_hat(),
[INFO] [stdout]     |         - matches some of the same values
[INFO] [stdout] 146 |         7 => remove_fancy_hat(),
[INFO] [stdout]     |         - matches some of the same values
[INFO] [stdout] 147 |         _ => reroll(), //here '_' is a special pattern that matches any value and doesnot bind to
[INFO] [stdout]     |         - matches some of the same values
[INFO] [stdout] ...
[INFO] [stdout] 151 |         _ => (), //nothing happens if it isnt 3 or 7
[INFO] [stdout]     |         ^ collectively making this unreachable
[INFO] [stdout]     = note: `#[warn(unreachable_patterns)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `six`
[INFO] [stdout]    --> src/match_basics/match_basics.rs:137:9
[INFO] [stdout]     |
[INFO] [stdout] 137 |     let six = pluss_one(five);
[INFO] [stdout]     |         ^^^ help: if this is intentional, prefix it with an underscore: `_six`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `none`
[INFO] [stdout]    --> src/match_basics/match_basics.rs:138:9
[INFO] [stdout]     |
[INFO] [stdout] 138 |     let none = pluss_one(None);
[INFO] [stdout]     |         ^^^^ help: if this is intentional, prefix it with an underscore: `_none`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `num_spaces`
[INFO] [stdout]    --> src/match_basics/match_basics.rs:155:20
[INFO] [stdout]     |
[INFO] [stdout] 155 |     fn move_player(num_spaces: u8) {}
[INFO] [stdout]     |                    ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_num_spaces`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `start`
[INFO] [stdout]   --> src/simple_programs/compression.rs:22:9
[INFO] [stdout]    |
[INFO] [stdout] 22 |     let start = Instant::now();
[INFO] [stdout]    |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_start`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `item`
[INFO] [stdout]   --> src/generic_traits_lifetime/generics.rs:27:13
[INFO] [stdout]    |
[INFO] [stdout] 27 |         for item in list {
[INFO] [stdout]    |             ^^^^ help: if this is intentional, prefix it with an underscore: `_item`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/generic_traits_lifetime/generics.rs:26:13
[INFO] [stdout]    |
[INFO] [stdout] 26 |         let mut largest = &list[0];
[INFO] [stdout]    |             ----^^^^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/collections/vectors.rs:84:19
[INFO] [stdout]    |
[INFO] [stdout] 84 |             Float(f32),
[INFO] [stdout]    |             ----- ^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             field in this variant
[INFO] [stdout]    |
[INFO] [stdout]    = note: `SpreadSheetCell` 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 field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]    |
[INFO] [stdout] 84 -             Float(f32),
[INFO] [stdout] 84 +             Float(()),
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/collections/vectors.rs:85:18
[INFO] [stdout]    |
[INFO] [stdout] 85 |             Text(String)
[INFO] [stdout]    |             ---- ^^^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             field in this variant
[INFO] [stdout]    |
[INFO] [stdout]    = note: `SpreadSheetCell` 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] 85 -             Text(String)
[INFO] [stdout] 85 +             Text(())
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Result` is never used
[INFO] [stdout]   --> src/error_handling/recoverable_errors.rs:10:14
[INFO] [stdout]    |
[INFO] [stdout] 10 |         enum Result<T, E>{
[INFO] [stdout]    |              ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `macros` is never used
[INFO] [stdout]  --> src/macros/macros.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn macros(){
[INFO] [stdout]   |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `associated_fns` is never used
[INFO] [stdout]   --> src/structs/structures.rs:72:8
[INFO] [stdout]    |
[INFO] [stdout] 72 | pub fn associated_fns() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `calc_area`, `check_square`, `return_self`, and `square` are never used
[INFO] [stdout]   --> src/structs/structures.rs:83:12
[INFO] [stdout]    |
[INFO] [stdout] 82 |     impl Rectangle {
[INFO] [stdout]    |     -------------- associated items in this implementation
[INFO] [stdout] 83 |         fn calc_area(&self) -> u32 {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 86 |         fn check_square(&self) -> bool {
[INFO] [stdout]    |            ^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 90 |         fn return_self(self) -> Self {
[INFO] [stdout]    |            ^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 95 |         fn square(size: u32) -> Self {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `enums_basics` is never used
[INFO] [stdout]  --> src/enums/enums.rs:7:8
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub fn enums_basics() {
[INFO] [stdout]   |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `handle_routing` is never used
[INFO] [stdout]   --> src/enums/enums.rs:35:12
[INFO] [stdout]    |
[INFO] [stdout] 34 |     impl IpAddress {
[INFO] [stdout]    |     -------------- method in this implementation
[INFO] [stdout] 35 |         fn handle_routing(&self) -> bool {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `apply_color` is never used
[INFO] [stdout]   --> src/enums/enums.rs:92:12
[INFO] [stdout]    |
[INFO] [stdout] 91 |     impl Message {
[INFO] [stdout]    |     ------------ method in this implementation
[INFO] [stdout] 92 |         fn apply_color(&self) -> bool {
[INFO] [stdout]    |            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `match_basics` is never used
[INFO] [stdout]  --> src/match_basics/match_basics.rs:4:8
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub fn match_basics(){
[INFO] [stdout]   |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `build_pattern` is never used
[INFO] [stdout]  --> src/simple_programs/build_pattern.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn build_pattern(blueprint: &str) -> String {
[INFO] [stdout]   |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `compression` is never used
[INFO] [stdout]   --> src/simple_programs/compression.rs:14:8
[INFO] [stdout]    |
[INFO] [stdout] 14 | pub fn compression() {
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `check` is never used
[INFO] [stdout]   --> src/main.rs:51:12
[INFO] [stdout]    |
[INFO] [stdout] 51 |     pub fn check() {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Rectangle` is never constructed
[INFO] [stdout]   --> src/writing_test/tests.rs:37:8
[INFO] [stdout]    |
[INFO] [stdout] 37 | struct Rectangle {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `can_hold` is never used
[INFO] [stdout]   --> src/writing_test/tests.rs:44:8
[INFO] [stdout]    |
[INFO] [stdout] 43 | impl Rectangle{
[INFO] [stdout]    | -------------- method in this implementation
[INFO] [stdout] 44 |     fn can_hold(&self,other:Rectangle)->bool{
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `generics` is never used
[INFO] [stdout]  --> src/generic_traits_lifetime/generics.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub fn generics() {
[INFO] [stdout]   |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `x` is never used
[INFO] [stdout]   --> src/generic_traits_lifetime/generics.rs:65:12
[INFO] [stdout]    |
[INFO] [stdout] 64 |     impl<T> Points<T> {
[INFO] [stdout]    |     ----------------- method in this implementation
[INFO] [stdout] 65 |         fn x(&self) -> &T {
[INFO] [stdout]    |            ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `mixup` is never used
[INFO] [stdout]   --> src/generic_traits_lifetime/generics.rs:75:12
[INFO] [stdout]    |
[INFO] [stdout] 74 |     impl<X1, Y1> Pointss<X1, Y1> {
[INFO] [stdout]    |     ---------------------------- method in this implementation
[INFO] [stdout] 75 |         fn mixup<X2, Y2>(self, other: Pointss<X2, Y2>) -> Pointss<X1, Y2> {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `concurrency` is never used
[INFO] [stdout]  --> src/concurrencies/concurrency.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub fn concurrency() {
[INFO] [stdout]   |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `loded_String` should have a snake case name
[INFO] [stdout]   --> src/collections/strings.rs:14:17
[INFO] [stdout]    |
[INFO] [stdout] 14 |         let mut loded_String: String = initia_data.to_string();
[INFO] [stdout]    |                 ^^^^^^^^^^^^ help: convert the identifier to snake case (notice the capitalization): `loded_string`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: module `Errors` should have a snake case name
[INFO] [stdout]  --> src/main.rs:7:13
[INFO] [stdout]   |
[INFO] [stdout] 7 |     pub mod Errors;
[INFO] [stdout]   |             ^^^^^^ help: convert the identifier to snake case: `errors`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: module `ErrorHandling` should have a snake case name
[INFO] [stdout]  --> src/error_handling/Errors.rs:1:10
[INFO] [stdout]   |
[INFO] [stdout] 1 |  pub mod ErrorHandling{
[INFO] [stdout]   |          ^^^^^^^^^^^^^ help: convert the identifier to snake case: `error_handling`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: module `RecoverableErrors` should have a snake case name
[INFO] [stdout]  --> src/error_handling/recoverable_errors.rs:2:9
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub mod RecoverableErrors{
[INFO] [stdout]   |         ^^^^^^^^^^^^^^^^^ help: convert the identifier to snake case: `recoverable_errors`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: module `UnrecoverableError` should have a snake case name
[INFO] [stdout]  --> src/error_handling/unrecoverable_errors.rs:1:9
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub mod UnrecoverableError{
[INFO] [stdout]   |         ^^^^^^^^^^^^^^^^^^ help: convert the identifier to snake case: `unrecoverable_error`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.55s
[INFO] running `Command { std: "docker" "inspect" "0828077c854e47c488e6d65e28104ba5490980a90eaf9c47d96b1f211f2ed68e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0828077c854e47c488e6d65e28104ba5490980a90eaf9c47d96b1f211f2ed68e", kill_on_drop: false }`
[INFO] [stdout] 0828077c854e47c488e6d65e28104ba5490980a90eaf9c47d96b1f211f2ed68e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] 71c06bc849a2cf3af32dcbecf43ac035e8a77660ca825788c330283ffa32e639
[INFO] running `Command { std: "docker" "start" "-a" "71c06bc849a2cf3af32dcbecf43ac035e8a77660ca825788c330283ffa32e639", kill_on_drop: false }`
[INFO] [stderr] warning: unused import: `std::collections::HashMap`
[INFO] [stderr]  --> src/collections/hashmap.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::collections::HashMap; //hashMap is not as popular as compared to string and vectors so it is not brought into scope automatically.
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::process`
[INFO] [stderr]  --> src/error_handling/recoverable_errors.rs:4:9
[INFO] [stderr]   |
[INFO] [stderr] 4 |     use std::process;
[INFO] [stderr]   |         ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `crate::ownership`
[INFO] [stderr]  --> src/smart_pointers/box_pointers.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 | use crate::ownership;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: type `_user3` should have an upper camel case name
[INFO] [stderr]  --> src/structs/structures.rs:4:8
[INFO] [stderr]   |
[INFO] [stderr] 4 | struct _user3 {
[INFO] [stderr]   |        ^^^^^^ help: convert the identifier to upper camel case: `User3`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(non_camel_case_types)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant `v4` should have an upper camel case name
[INFO] [stderr]   --> src/enums/enums.rs:12:9
[INFO] [stderr]    |
[INFO] [stderr] 12 |         v4,
[INFO] [stderr]    |         ^^ help: convert the identifier to upper camel case (notice the capitalization): `V4`
[INFO] [stderr] 
[INFO] [stderr] warning: variant `v6` should have an upper camel case name
[INFO] [stderr]   --> src/enums/enums.rs:13:9
[INFO] [stderr]    |
[INFO] [stderr] 13 |         v6,
[INFO] [stderr]    |         ^^ help: convert the identifier to upper camel case (notice the capitalization): `V6`
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::process::Output`
[INFO] [stderr]  --> src/simple_programs/compression.rs:9:5
[INFO] [stderr]   |
[INFO] [stderr] 9 | use std::process::Output;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `s`
[INFO] [stderr]  --> src/collections/strings.rs:8:17
[INFO] [stderr]   |
[INFO] [stderr] 8 |         let mut s = String::new();
[INFO] [stderr]   |                 ^ help: if this is intentional, prefix it with an underscore: `_s`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `loded_String`
[INFO] [stderr]   --> src/collections/strings.rs:14:17
[INFO] [stderr]    |
[INFO] [stderr] 14 |         let mut loded_String: String = initia_data.to_string();
[INFO] [stderr]    |                 ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_loded_String`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `concat`
[INFO] [stderr]   --> src/collections/strings.rs:36:13
[INFO] [stderr]    |
[INFO] [stderr] 36 |         let concat: String = str_1 + &str_2;
[INFO] [stderr]    |             ^^^^^^ help: if this is intentional, prefix it with an underscore: `_concat`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `new_string`
[INFO] [stderr]   --> src/collections/strings.rs:54:13
[INFO] [stderr]    |
[INFO] [stderr] 54 |         let new_string = String::from("New String");
[INFO] [stderr]    |             ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_new_string`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]  --> src/collections/strings.rs:8:13
[INFO] [stderr]   |
[INFO] [stderr] 8 |         let mut s = String::new();
[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: variable does not need to be mutable
[INFO] [stderr]   --> src/collections/strings.rs:14:13
[INFO] [stderr]    |
[INFO] [stderr] 14 |         let mut loded_String: String = initia_data.to_string();
[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/collections/vectors.rs:41:13
[INFO] [stderr]    |
[INFO] [stderr] 41 |         let mut ref_vec: Vec<i32> = vec![1, 2, 3, 4, 5];
[INFO] [stderr]    |             ----^^^^^^^
[INFO] [stderr]    |             |
[INFO] [stderr]    |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `num`
[INFO] [stderr]   --> src/collections/vectors.rs:62:13
[INFO] [stderr]    |
[INFO] [stderr] 62 |         for num in &v {
[INFO] [stderr]    |             ^^^ help: if this is intentional, prefix it with an underscore: `_num`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `h`
[INFO] [stderr]   --> src/error_handling/recoverable_errors.rs:39:20
[INFO] [stderr]    |
[INFO] [stderr] 39 |                 Ok(h) => println!("write operation completed"),
[INFO] [stderr]    |                    ^ help: if this is intentional, prefix it with an underscore: `_h`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `fc`
[INFO] [stderr]   --> src/error_handling/recoverable_errors.rs:48:24
[INFO] [stderr]    |
[INFO] [stderr] 48 |                     Ok(fc) => {
[INFO] [stderr]    |                        ^^ help: if this is intentional, prefix it with an underscore: `_fc`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `new_file`
[INFO] [stderr]   --> src/error_handling/recoverable_errors.rs:65:9
[INFO] [stderr]    |
[INFO] [stderr] 65 |     let new_file = File::open("new_file.txt").unwrap_or_else(|error| {
[INFO] [stderr]    |         ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_new_file`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `e_file`
[INFO] [stderr]   --> src/error_handling/recoverable_errors.rs:84:5
[INFO] [stderr]    |
[INFO] [stderr] 84 | let e_file = File::open("e.txt").expect("e.txt File should exist before executing further");//terminates the execution
[INFO] [stderr]    |     ^^^^^^ help: if this is intentional, prefix it with an underscore: `_e_file`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `d_val`
[INFO] [stderr]    --> src/smart_pointers/box_pointers.rs:117:7
[INFO] [stderr]     |
[INFO] [stderr] 117 |   let d_val = MyBox::new(30); 
[INFO] [stderr]     |       ^^^^^ help: if this is intentional, prefix it with an underscore: `_d_val`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `black`
[INFO] [stderr]   --> src/structs/structures.rs:69:9
[INFO] [stderr]    |
[INFO] [stderr] 69 |     let black = Color(2, 3, 4);
[INFO] [stderr]    |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_black`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `v6_example`
[INFO] [stderr]   --> src/enums/enums.rs:45:9
[INFO] [stderr]    |
[INFO] [stderr] 45 |     let v6_example = IpAddress {
[INFO] [stderr]    |         ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_v6_example`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `ip_addr`
[INFO] [stderr]   --> src/enums/enums.rs:24:21
[INFO] [stderr]    |
[INFO] [stderr] 24 |     fn handle_route(ip_addr: _IpAddrkind) {
[INFO] [stderr]    |                     ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_ip_addr`
[INFO] [stderr] 
[INFO] [stderr] warning: unreachable pattern
[INFO] [stderr]    --> src/match_basics/match_basics.rs:151:9
[INFO] [stderr]     |
[INFO] [stderr] 151 |         _ => (), //nothing happens if it isnt 3 or 7
[INFO] [stderr]     |         ^ no value can reach this
[INFO] [stderr]     |
[INFO] [stderr] note: multiple earlier patterns match some of the same values
[INFO] [stderr]    --> src/match_basics/match_basics.rs:151:9
[INFO] [stderr]     |
[INFO] [stderr] 145 |         3 => add_fancy_hat(),
[INFO] [stderr]     |         - matches some of the same values
[INFO] [stderr] 146 |         7 => remove_fancy_hat(),
[INFO] [stderr]     |         - matches some of the same values
[INFO] [stderr] 147 |         _ => reroll(), //here '_' is a special pattern that matches any value and doesnot bind to
[INFO] [stderr]     |         - matches some of the same values
[INFO] [stderr] ...
[INFO] [stderr] 151 |         _ => (), //nothing happens if it isnt 3 or 7
[INFO] [stderr]     |         ^ collectively making this unreachable
[INFO] [stderr]     = note: `#[warn(unreachable_patterns)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `six`
[INFO] [stderr]    --> src/match_basics/match_basics.rs:137:9
[INFO] [stderr]     |
[INFO] [stderr] 137 |     let six = pluss_one(five);
[INFO] [stderr]     |         ^^^ help: if this is intentional, prefix it with an underscore: `_six`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `none`
[INFO] [stderr]    --> src/match_basics/match_basics.rs:138:9
[INFO] [stderr]     |
[INFO] [stderr] 138 |     let none = pluss_one(None);
[INFO] [stderr]     |         ^^^^ help: if this is intentional, prefix it with an underscore: `_none`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `num_spaces`
[INFO] [stderr]    --> src/match_basics/match_basics.rs:155:20
[INFO] [stderr]     |
[INFO] [stderr] 155 |     fn move_player(num_spaces: u8) {}
[INFO] [stderr]     |                    ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_num_spaces`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `start`
[INFO] [stderr]   --> src/simple_programs/compression.rs:22:9
[INFO] [stderr]    |
[INFO] [stderr] 22 |     let start = Instant::now();
[INFO] [stderr]    |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_start`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `item`
[INFO] [stderr]   --> src/generic_traits_lifetime/generics.rs:27:13
[INFO] [stderr]    |
[INFO] [stderr] 27 |         for item in list {
[INFO] [stderr]    |             ^^^^ help: if this is intentional, prefix it with an underscore: `_item`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/generic_traits_lifetime/generics.rs:26:13
[INFO] [stderr]    |
[INFO] [stderr] 26 |         let mut largest = &list[0];
[INFO] [stderr]    |             ----^^^^^^^
[INFO] [stderr]    |             |
[INFO] [stderr]    |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: field `0` is never read
[INFO] [stderr]   --> src/collections/vectors.rs:84:19
[INFO] [stderr]    |
[INFO] [stderr] 84 |             Float(f32),
[INFO] [stderr]    |             ----- ^^^
[INFO] [stderr]    |             |
[INFO] [stderr]    |             field in this variant
[INFO] [stderr]    |
[INFO] [stderr]    = note: `SpreadSheetCell` 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 field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stderr]    |
[INFO] [stderr] 84 -             Float(f32),
[INFO] [stderr] 84 +             Float(()),
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: field `0` is never read
[INFO] [stderr]   --> src/collections/vectors.rs:85:18
[INFO] [stderr]    |
[INFO] [stderr] 85 |             Text(String)
[INFO] [stderr]    |             ---- ^^^^^^
[INFO] [stderr]    |             |
[INFO] [stderr]    |             field in this variant
[INFO] [stderr]    |
[INFO] [stderr]    = note: `SpreadSheetCell` 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] 85 -             Text(String)
[INFO] [stderr] 85 +             Text(())
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: enum `Result` is never used
[INFO] [stderr]   --> src/error_handling/recoverable_errors.rs:10:14
[INFO] [stderr]    |
[INFO] [stderr] 10 |         enum Result<T, E>{
[INFO] [stderr]    |              ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `macros` is never used
[INFO] [stderr]  --> src/macros/macros.rs:1:8
[INFO] [stderr]   |
[INFO] [stderr] 1 | pub fn macros(){
[INFO] [stderr]   |        ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `associated_fns` is never used
[INFO] [stderr]   --> src/structs/structures.rs:72:8
[INFO] [stderr]    |
[INFO] [stderr] 72 | pub fn associated_fns() {
[INFO] [stderr]    |        ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated items `calc_area`, `check_square`, `return_self`, and `square` are never used
[INFO] [stderr]   --> src/structs/structures.rs:83:12
[INFO] [stderr]    |
[INFO] [stderr] 82 |     impl Rectangle {
[INFO] [stderr]    |     -------------- associated items in this implementation
[INFO] [stderr] 83 |         fn calc_area(&self) -> u32 {
[INFO] [stderr]    |            ^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 86 |         fn check_square(&self) -> bool {
[INFO] [stderr]    |            ^^^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 90 |         fn return_self(self) -> Self {
[INFO] [stderr]    |            ^^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 95 |         fn square(size: u32) -> Self {
[INFO] [stderr]    |            ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `enums_basics` is never used
[INFO] [stderr]  --> src/enums/enums.rs:7:8
[INFO] [stderr]   |
[INFO] [stderr] 7 | pub fn enums_basics() {
[INFO] [stderr]   |        ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method `handle_routing` is never used
[INFO] [stderr]   --> src/enums/enums.rs:35:12
[INFO] [stderr]    |
[INFO] [stderr] 34 |     impl IpAddress {
[INFO] [stderr]    |     -------------- method in this implementation
[INFO] [stderr] 35 |         fn handle_routing(&self) -> bool {
[INFO] [stderr]    |            ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method `apply_color` is never used
[INFO] [stderr]   --> src/enums/enums.rs:92:12
[INFO] [stderr]    |
[INFO] [stderr] 91 |     impl Message {
[INFO] [stderr]    |     ------------ method in this implementation
[INFO] [stderr] 92 |         fn apply_color(&self) -> bool {
[INFO] [stderr]    |            ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `match_basics` is never used
[INFO] [stderr]  --> src/match_basics/match_basics.rs:4:8
[INFO] [stderr]   |
[INFO] [stderr] 4 | pub fn match_basics(){
[INFO] [stderr]   |        ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `build_pattern` is never used
[INFO] [stderr]  --> src/simple_programs/build_pattern.rs:1:8
[INFO] [stderr]   |
[INFO] [stderr] 1 | pub fn build_pattern(blueprint: &str) -> String {
[INFO] [stderr]   |        ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `compression` is never used
[INFO] [stderr]   --> src/simple_programs/compression.rs:14:8
[INFO] [stderr]    |
[INFO] [stderr] 14 | pub fn compression() {
[INFO] [stderr]    |        ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `check` is never used
[INFO] [stderr]   --> src/main.rs:51:12
[INFO] [stderr]    |
[INFO] [stderr] 51 |     pub fn check() {
[INFO] [stderr]    |            ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct `Rectangle` is never constructed
[INFO] [stderr]   --> src/writing_test/tests.rs:37:8
[INFO] [stderr]    |
[INFO] [stderr] 37 | struct Rectangle {
[INFO] [stderr]    |        ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method `can_hold` is never used
[INFO] [stderr]   --> src/writing_test/tests.rs:44:8
[INFO] [stderr]    |
[INFO] [stderr] 43 | impl Rectangle{
[INFO] [stderr]    | -------------- method in this implementation
[INFO] [stderr] 44 |     fn can_hold(&self,other:Rectangle)->bool{
[INFO] [stderr]    |        ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `generics` is never used
[INFO] [stderr]  --> src/generic_traits_lifetime/generics.rs:3:8
[INFO] [stderr]   |
[INFO] [stderr] 3 | pub fn generics() {
[INFO] [stderr]   |        ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method `x` is never used
[INFO] [stderr]   --> src/generic_traits_lifetime/generics.rs:65:12
[INFO] [stderr]    |
[INFO] [stderr] 64 |     impl<T> Points<T> {
[INFO] [stderr]    |     ----------------- method in this implementation
[INFO] [stderr] 65 |         fn x(&self) -> &T {
[INFO] [stderr]    |            ^
[INFO] [stderr] 
[INFO] [stderr] warning: method `mixup` is never used
[INFO] [stderr]   --> src/generic_traits_lifetime/generics.rs:75:12
[INFO] [stderr]    |
[INFO] [stderr] 74 |     impl<X1, Y1> Pointss<X1, Y1> {
[INFO] [stderr]    |     ---------------------------- method in this implementation
[INFO] [stderr] 75 |         fn mixup<X2, Y2>(self, other: Pointss<X2, Y2>) -> Pointss<X1, Y2> {
[INFO] [stderr]    |            ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `concurrency` is never used
[INFO] [stderr]  --> src/concurrencies/concurrency.rs:3:8
[INFO] [stderr]   |
[INFO] [stderr] 3 | pub fn concurrency() {
[INFO] [stderr]   |        ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variable `loded_String` should have a snake case name
[INFO] [stderr]   --> src/collections/strings.rs:14:17
[INFO] [stderr]    |
[INFO] [stderr] 14 |         let mut loded_String: String = initia_data.to_string();
[INFO] [stderr]    |                 ^^^^^^^^^^^^ help: convert the identifier to snake case (notice the capitalization): `loded_string`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(non_snake_case)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: module `Errors` should have a snake case name
[INFO] [stderr]  --> src/main.rs:7:13
[INFO] [stderr]   |
[INFO] [stderr] 7 |     pub mod Errors;
[INFO] [stderr]   |             ^^^^^^ help: convert the identifier to snake case: `errors`
[INFO] [stderr] 
[INFO] [stderr] warning: module `ErrorHandling` should have a snake case name
[INFO] [stderr]  --> src/error_handling/Errors.rs:1:10
[INFO] [stderr]   |
[INFO] [stderr] 1 |  pub mod ErrorHandling{
[INFO] [stderr]   |          ^^^^^^^^^^^^^ help: convert the identifier to snake case: `error_handling`
[INFO] [stderr] 
[INFO] [stderr] warning: module `RecoverableErrors` should have a snake case name
[INFO] [stderr]  --> src/error_handling/recoverable_errors.rs:2:9
[INFO] [stderr]   |
[INFO] [stderr] 2 | pub mod RecoverableErrors{
[INFO] [stderr]   |         ^^^^^^^^^^^^^^^^^ help: convert the identifier to snake case: `recoverable_errors`
[INFO] [stderr] 
[INFO] [stderr] warning: module `UnrecoverableError` should have a snake case name
[INFO] [stderr]  --> src/error_handling/unrecoverable_errors.rs:1:9
[INFO] [stderr]   |
[INFO] [stderr] 1 | pub mod UnrecoverableError{
[INFO] [stderr]   |         ^^^^^^^^^^^^^^^^^^ help: convert the identifier to snake case: `unrecoverable_error`
[INFO] [stderr] 
[INFO] [stderr] warning: `learn-rust` (bin "learn-rust" test) generated 54 warnings (run `cargo fix --bin "learn-rust" --tests` to apply 8 suggestions)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.07s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/learn_rust-b88fff8916f8b103)
[INFO] [stdout] 
[INFO] [stdout] running 5 tests
[INFO] [stdout] test writing_test::tests::tests::it_works ... ok
[INFO] [stdout] test writing_test::tests2::tests::smaller_cannot_hold_larger ... ok
[INFO] [stdout] test writing_test::tests::testers::exploration ... ok
[INFO] [stdout] test writing_test::tests::testers::another ... FAILED
[INFO] [stdout] test writing_test::tests2::tests::larger_can_hold_smaller ... FAILED
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- writing_test::tests::testers::another stdout ----
[INFO] [stdout] 
[INFO] [stdout] thread 'writing_test::tests::testers::another' panicked at src/writing_test/tests.rs:31:9:
[INFO] [stdout] Makes it go boom
[INFO] [stdout] stack backtrace:
[INFO] [stdout]    0:     0x652f9efee842 - 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:     0x652f9efee842 - 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:     0x652f9efee842 - std::sys::backtrace::_print_fmt::hd72f71d23b436b92
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/sys/backtrace.rs:66:9
[INFO] [stdout]    3:     0x652f9efee842 - <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:     0x652f9f013a33 - core::fmt::rt::Argument::fmt::h2c56b3114963061a
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/core/src/fmt/rt.rs:173:76
[INFO] [stdout]    5:     0x652f9f013a33 - core::fmt::write::h8a494366950f23bb
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/core/src/fmt/mod.rs:1468:25
[INFO] [stdout]    6:     0x652f9efeb7c3 - std::io::default_write_fmt::h7b8824096454f323
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/io/mod.rs:639:11
[INFO] [stdout]    7:     0x652f9efeb7c3 - std::io::Write::write_fmt::h4e71294925c334d0
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/io/mod.rs:1954:13
[INFO] [stdout]    8:     0x652f9efee692 - std::sys::backtrace::BacktraceLock::print::hb2a626a81e06b2dc
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/sys/backtrace.rs:42:9
[INFO] [stdout]    9:     0x652f9efefdb9 - std::panicking::default_hook::{{closure}}::h4f78485264f12d10
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panicking.rs:300:27
[INFO] [stdout]   10:     0x652f9efefbee - std::panicking::default_hook::h2c66fc99e962531d
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panicking.rs:324:9
[INFO] [stdout]   11:     0x652f9efb77d4 - <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:     0x652f9efb77d4 - test::test_main_with_exit_callback::{{closure}}::h60217ec76a0ece4a
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/test/src/lib.rs:145:21
[INFO] [stdout]   13:     0x652f9eff078e - <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:     0x652f9eff078e - std::panicking::rust_panic_with_hook::h33ac55f64bbd807d
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panicking.rs:841:13
[INFO] [stdout]   15:     0x652f9eff0526 - std::panicking::begin_panic_handler::{{closure}}::h30e7cb89678a57fe
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panicking.rs:699:13
[INFO] [stdout]   16:     0x652f9efeed39 - std::sys::backtrace::__rust_end_short_backtrace::hed60f27456c16ced
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/sys/backtrace.rs:174:18
[INFO] [stdout]   17:     0x652f9eff01ed - __rustc[de2ca18b4c54d5b8]::rust_begin_unwind
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panicking.rs:697:5
[INFO] [stdout]   18:     0x652f9f012520 - core::panicking::panic_fmt::h62f63d096dd276af
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/core/src/panicking.rs:75:14
[INFO] [stdout]   19:     0x652f9ef7e138 - learn_rust::writing_test::tests::testers::another::h5752fa2eae9ad0e9
[INFO] [stdout]                                at /opt/rustwide/workdir/src/writing_test/tests.rs:31:9
[INFO] [stdout]   20:     0x652f9ef7e0f7 - learn_rust::writing_test::tests::testers::another::{{closure}}::h65a0a62567fea79b
[INFO] [stdout]                                at /opt/rustwide/workdir/src/writing_test/tests.rs:30:17
[INFO] [stdout]   21:     0x652f9ef7db16 - core::ops::function::FnOnce::call_once::ha23322d4a2f138fc
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/core/src/ops/function.rs:253:5
[INFO] [stdout]   22:     0x652f9efbd03b - core::ops::function::FnOnce::call_once::h1f9474f1347fff52
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/core/src/ops/function.rs:253:5
[INFO] [stdout]   23:     0x652f9efbd03b - test::__rust_begin_short_backtrace::ha52ab26e77157f03
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/test/src/lib.rs:648:18
[INFO] [stdout]   24:     0x652f9efbc175 - test::run_test_in_process::{{closure}}::h229c1a11a50b261f
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/test/src/lib.rs:671:74
[INFO] [stdout]   25:     0x652f9efbc175 - <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:     0x652f9efbc175 - std::panicking::catch_unwind::do_call::h53abf3ed5bd32ba3
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panicking.rs:589:40
[INFO] [stdout]   27:     0x652f9efbc175 - std::panicking::catch_unwind::h6deb5fe1e91873c9
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panicking.rs:552:19
[INFO] [stdout]   28:     0x652f9efbc175 - std::panic::catch_unwind::hea0829b6b565654b
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panic.rs:359:14
[INFO] [stdout]   29:     0x652f9efbc175 - test::run_test_in_process::hdc44dfecea3db21b
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/test/src/lib.rs:671:27
[INFO] [stdout]   30:     0x652f9efbc175 - test::run_test::{{closure}}::h0364ba59bf23f652
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/test/src/lib.rs:592:43
[INFO] [stdout]   31:     0x652f9ef7fd74 - test::run_test::{{closure}}::h32730b304eec05da
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/test/src/lib.rs:622:41
[INFO] [stdout]   32:     0x652f9ef7fd74 - std::sys::backtrace::__rust_begin_short_backtrace::h177cb952fc54ad2c
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/sys/backtrace.rs:158:18
[INFO] [stdout]   33:     0x652f9ef8374a - std::thread::Builder::spawn_unchecked_::{{closure}}::{{closure}}::h119d903520007597
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/thread/mod.rs:559:17
[INFO] [stdout]   34:     0x652f9ef8374a - <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:     0x652f9ef8374a - std::panicking::catch_unwind::do_call::h163fe12cca9901c2
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panicking.rs:589:40
[INFO] [stdout]   36:     0x652f9ef8374a - std::panicking::catch_unwind::he81557d0e17cc1bc
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panicking.rs:552:19
[INFO] [stdout]   37:     0x652f9ef8374a - std::panic::catch_unwind::hc2b8e79c20593955
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panic.rs:359:14
[INFO] [stdout]   38:     0x652f9ef8374a - std::thread::Builder::spawn_unchecked_::{{closure}}::hfa6b4978e07815cc
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/thread/mod.rs:557:30
[INFO] [stdout]   39:     0x652f9ef8374a - 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:     0x652f9eff370f - <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:     0x652f9eff370f - 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:     0x7d98311a3aa4 - <unknown>
[INFO] [stdout]   43:     0x7d9831230a34 - clone
[INFO] [stdout]   44:                0x0 - <unknown>
[INFO] [stdout] 
[INFO] [stdout] ---- writing_test::tests2::tests::larger_can_hold_smaller stdout ----
[INFO] [stdout] 
[INFO] [stdout] thread 'writing_test::tests2::tests::larger_can_hold_smaller' panicked at src/writing_test/tests2.rs:30:9:
[INFO] [stdout] assertion failed: larger.can_hold(smaller)
[INFO] [stdout] stack backtrace:
[INFO] [stdout]    0:     0x652f9efee842 - 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:     0x652f9efee842 - 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:     0x652f9efee842 - std::sys::backtrace::_print_fmt::hd72f71d23b436b92
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/sys/backtrace.rs:66:9
[INFO] [stdout]    3:     0x652f9efee842 - <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:     0x652f9f013a33 - core::fmt::rt::Argument::fmt::h2c56b3114963061a
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/core/src/fmt/rt.rs:173:76
[INFO] [stdout]    5:     0x652f9f013a33 - core::fmt::write::h8a494366950f23bb
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/core/src/fmt/mod.rs:1468:25
[INFO] [stdout]    6:     0x652f9efeb7c3 - std::io::default_write_fmt::h7b8824096454f323
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/io/mod.rs:639:11
[INFO] [stdout]    7:     0x652f9efeb7c3 - std::io::Write::write_fmt::h4e71294925c334d0
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/io/mod.rs:1954:13
[INFO] [stdout]    8:     0x652f9efee692 - std::sys::backtrace::BacktraceLock::print::hb2a626a81e06b2dc
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/sys/backtrace.rs:42:9
[INFO] [stdout]    9:     0x652f9efefdb9 - std::panicking::default_hook::{{closure}}::h4f78485264f12d10
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panicking.rs:300:27
[INFO] [stdout]   10:     0x652f9efefbee - std::panicking::default_hook::h2c66fc99e962531d
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panicking.rs:324:9
[INFO] [stdout]   11:     0x652f9efb77d4 - <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:     0x652f9efb77d4 - test::test_main_with_exit_callback::{{closure}}::h60217ec76a0ece4a
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/test/src/lib.rs:145:21
[INFO] [stdout]   13:     0x652f9eff078e - <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:     0x652f9eff078e - std::panicking::rust_panic_with_hook::h33ac55f64bbd807d
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panicking.rs:841:13
[INFO] [stdout]   15:     0x652f9eff0526 - std::panicking::begin_panic_handler::{{closure}}::h30e7cb89678a57fe
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panicking.rs:699:13
[INFO] [stdout]   16:     0x652f9efeed39 - std::sys::backtrace::__rust_end_short_backtrace::hed60f27456c16ced
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/sys/backtrace.rs:174:18
[INFO] [stdout]   17:     0x652f9eff01ed - __rustc[de2ca18b4c54d5b8]::rust_begin_unwind
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panicking.rs:697:5
[INFO] [stdout]   18:     0x652f9f012520 - core::panicking::panic_fmt::h62f63d096dd276af
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/core/src/panicking.rs:75:14
[INFO] [stdout]   19:     0x652f9f0125ac - core::panicking::panic::h89a5f2df32b0508a
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/core/src/panicking.rs:145:5
[INFO] [stdout]   20:     0x652f9ef7e1c5 - learn_rust::writing_test::tests2::tests::larger_can_hold_smaller::h0c89032201174d9c
[INFO] [stdout]                                at /opt/rustwide/workdir/src/writing_test/tests2.rs:30:9
[INFO] [stdout]   21:     0x652f9ef7e157 - learn_rust::writing_test::tests2::tests::larger_can_hold_smaller::{{closure}}::h677303562b154fc1
[INFO] [stdout]                                at /opt/rustwide/workdir/src/writing_test/tests2.rs:21:37
[INFO] [stdout]   22:     0x652f9ef7dad6 - core::ops::function::FnOnce::call_once::h6b3fc10804b627a2
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/core/src/ops/function.rs:253:5
[INFO] [stdout]   23:     0x652f9efbd03b - core::ops::function::FnOnce::call_once::h1f9474f1347fff52
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/core/src/ops/function.rs:253:5
[INFO] [stdout]   24:     0x652f9efbd03b - test::__rust_begin_short_backtrace::ha52ab26e77157f03
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/test/src/lib.rs:648:18
[INFO] [stdout]   25:     0x652f9efbc175 - test::run_test_in_process::{{closure}}::h229c1a11a50b261f
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/test/src/lib.rs:671:74
[INFO] [stdout]   26:     0x652f9efbc175 - <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]   27:     0x652f9efbc175 - std::panicking::catch_unwind::do_call::h53abf3ed5bd32ba3
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panicking.rs:589:40
[INFO] [stdout]   28:     0x652f9efbc175 - std::panicking::catch_unwind::h6deb5fe1e91873c9
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panicking.rs:552:19
[INFO] [stdout]   29:     0x652f9efbc175 - std::panic::catch_unwind::hea0829b6b565654b
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panic.rs:359:14
[INFO] [stdout]   30:     0x652f9efbc175 - test::run_test_in_process::hdc44dfecea3db21b
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/test/src/lib.rs:671:27
[INFO] [stdout]   31:     0x652f9efbc175 - test::run_test::{{closure}}::h0364ba59bf23f652
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/test/src/lib.rs:592:43
[INFO] [stdout]   32:     0x652f9ef7fd74 - test::run_test::{{closure}}::h32730b304eec05da
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/test/src/lib.rs:622:41
[INFO] [stdout]   33:     0x652f9ef7fd74 - std::sys::backtrace::__rust_begin_short_backtrace::h177cb952fc54ad2c
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/sys/backtrace.rs:158:18
[INFO] [stdout]   34:     0x652f9ef8374a - std::thread::Builder::spawn_unchecked_::{{closure}}::{{closure}}::h119d903520007597
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/thread/mod.rs:559:17
[INFO] [stdout]   35:     0x652f9ef8374a - <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]   36:     0x652f9ef8374a - std::panicking::catch_unwind::do_call::h163fe12cca9901c2
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panicking.rs:589:40
[INFO] [stdout]   37:     0x652f9ef8374a - std::panicking::catch_unwind::he81557d0e17cc1bc
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panicking.rs:552:19
[INFO] [stdout]   38:     0x652f9ef8374a - std::panic::catch_unwind::hc2b8e79c20593955
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panic.rs:359:14
[INFO] [stdout]   39:     0x652f9ef8374a - std::thread::Builder::spawn_unchecked_::{{closure}}::hfa6b4978e07815cc
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/thread/mod.rs:557:30
[INFO] [stdout]   40:     0x652f9ef8374a - core::ops::function::FnOnce::call_once{{vtable.shim}}::hddcd7484a13fd793
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/core/src/ops/function.rs:253:5
[INFO] [stdout]   41:     0x652f9eff370f - <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]   42:     0x652f9eff370f - 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]   43:     0x7d98311a3aa4 - <unknown>
[INFO] [stdout]   44:     0x7d9831230a34 - clone
[INFO] [stdout]   45:                0x0 - <unknown>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout]     writing_test::tests2::tests::larger_can_hold_smaller
[INFO] [stdout]     writing_test::tests::testers::another
[INFO] [stdout] 
[INFO] [stdout] test result: FAILED. 3 passed; 2 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.08s
[INFO] [stdout] 
[INFO] [stderr] error: test failed, to rerun pass `--bin learn-rust`
[INFO] running `Command { std: "docker" "inspect" "71c06bc849a2cf3af32dcbecf43ac035e8a77660ca825788c330283ffa32e639", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "71c06bc849a2cf3af32dcbecf43ac035e8a77660ca825788c330283ffa32e639", kill_on_drop: false }`
[INFO] [stdout] 71c06bc849a2cf3af32dcbecf43ac035e8a77660ca825788c330283ffa32e639
