[INFO] fetching crate guessing_game_viggin 0.1.0...
[INFO] testing guessing_game_viggin-0.1.0 against beta-2021-08-01 for beta-1.55-1
[INFO] extracting crate guessing_game_viggin 0.1.0 into /workspace/builds/worker-93/source
[INFO] validating manifest of crates.io crate guessing_game_viggin 0.1.0 on toolchain beta-2021-08-01
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-08-01" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate guessing_game_viggin 0.1.0
[INFO] finished tweaking crates.io crate guessing_game_viggin 0.1.0
[INFO] tweaked toml for crates.io crate guessing_game_viggin 0.1.0 written to /workspace/builds/worker-93/source/Cargo.toml
[INFO] crate crates.io crate guessing_game_viggin 0.1.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-08-01" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded tokio-macros v0.2.4
[INFO] [stderr]   Downloaded hyper v0.13.2
[INFO] [stderr]   Downloaded memchr v2.3.2
[INFO] [stderr]   Downloaded tokio v0.2.11
[INFO] [stderr]   Downloaded futures v0.3.4
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[INFO] [stdout] ed6c561275b5cfe82b2a154922e5ce2de946e7730052e61d04075ba033f655e5
[INFO] running `Command { std: "docker" "start" "-a" "ed6c561275b5cfe82b2a154922e5ce2de946e7730052e61d04075ba033f655e5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ed6c561275b5cfe82b2a154922e5ce2de946e7730052e61d04075ba033f655e5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ed6c561275b5cfe82b2a154922e5ce2de946e7730052e61d04075ba033f655e5", kill_on_drop: false }`
[INFO] [stdout] ed6c561275b5cfe82b2a154922e5ce2de946e7730052e61d04075ba033f655e5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-93/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-93/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-08-01" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a1d1256944dacf42b55d50d99093579464241a1293d79cadc71f863ed4748188
[INFO] running `Command { std: "docker" "start" "-a" "a1d1256944dacf42b55d50d99093579464241a1293d79cadc71f863ed4748188", kill_on_drop: false }`
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[INFO] [stdout] warning: unused import: `std::str::FromStr`
[INFO] [stdout]  --> src/lib/config.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::str::FromStr;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `args`
[INFO] [stdout]   --> src/lib/config.rs:31:9
[INFO] [stdout]    |
[INFO] [stdout] 31 |     let args: Vec<String> = env::args().collect();
[INFO] [stdout]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_args`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `c1`
[INFO] [stdout]   --> src/lib/pub_use.rs:31:16
[INFO] [stdout]    |
[INFO] [stdout] 31 |     pub fn mix(c1: PrimaryColor, c2: PrimaryColor) -> SecondaryColor {
[INFO] [stdout]    |                ^^ help: if this is intentional, prefix it with an underscore: `_c1`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `c2`
[INFO] [stdout]   --> src/lib/pub_use.rs:31:34
[INFO] [stdout]    |
[INFO] [stdout] 31 |     pub fn mix(c1: PrimaryColor, c2: PrimaryColor) -> SecondaryColor {
[INFO] [stdout]    |                                  ^^ help: if this is intentional, prefix it with an underscore: `_c2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `DA`
[INFO] [stdout]   --> src/bin/enums/main.rs:28:8
[INFO] [stdout]    |
[INFO] [stdout] 28 | struct DA {
[INFO] [stdout]    |        ^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]   --> src/bin/collections/main.rs:89:6
[INFO] [stdout]    |
[INFO] [stdout] 89 |     };
[INFO] [stdout]    |      ^ help: remove this semicolon
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(redundant_semicolons)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `word_count`
[INFO] [stdout]   --> src/bin/hash/main.rs:62:9
[INFO] [stdout]    |
[INFO] [stdout] 62 |     let word_count : HashMap<_,_> = v.iter()
[INFO] [stdout]    |         ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_word_count`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `meta`
[INFO] [stdout]   --> src/bin/errors/errors.rs:31:15
[INFO] [stdout]    |
[INFO] [stdout] 31 |     if let Ok(meta) = f.metadata() {
[INFO] [stdout]    |               ^^^^ help: if this is intentional, prefix it with an underscore: `_meta`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `can_hold`
[INFO] [stdout]   --> src/bin/tests/main.rs:14:8
[INFO] [stdout]    |
[INFO] [stdout] 14 |     fn can_hold(&self, other: &Rectangle) -> bool {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `zzip`
[INFO] [stdout]   --> src/bin/hash/main.rs:60:4
[INFO] [stdout]    |
[INFO] [stdout] 60 | fn zzip(v : &Vec<u8>){
[INFO] [stdout]    |    ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]   --> src/bin/closures/main.rs:32:9
[INFO] [stdout]    |
[INFO] [stdout] 32 |     let x = 4;
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/bin/errors/errors.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 12 |     read_username_from_file_v2();
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/bin/errors/errors.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 13 |     read_username_from_file_v3();
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/bin/errors/errors.rs:32:9
[INFO] [stdout]    |
[INFO] [stdout] 32 |         fs::remove_file("hello.txt");
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `shoes_in_my_size`
[INFO] [stdout]   --> src/bin/closures/iterators.rs:61:4
[INFO] [stdout]    |
[INFO] [stdout] 61 | fn shoes_in_my_size(shoes: Vec<Shoe>, shoe_size: u32) -> Vec<Shoe> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/bin/closures/iterators.rs:92:8
[INFO] [stdout]    |
[INFO] [stdout] 92 |     fn new() -> Counter {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `simulated_expensive_calculation`
[INFO] [stdout]  --> src/bin/closures/main.rs:9:4
[INFO] [stdout]   |
[INFO] [stdout] 9 | fn simulated_expensive_calculation(intensity: u32) -> u32 {
[INFO] [stdout]   |    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `inner_func`
[INFO] [stdout]   --> src/bin/closures/main.rs:31:4
[INFO] [stdout]    |
[INFO] [stdout] 31 | fn inner_func(){
[INFO] [stdout]    |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `v`
[INFO] [stdout]   --> src/bin/collections/main.rs:12:9
[INFO] [stdout]    |
[INFO] [stdout] 12 |     let v: Vec<u128> = Vec::new();
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_v`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `s2` is never read
[INFO] [stdout]   --> src/bin/collections/main.rs:71:5
[INFO] [stdout]    |
[INFO] [stdout] 71 |     s2 = String::from("xxx");
[INFO] [stdout]    |     ^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/bin/collections/main.rs:21:9
[INFO] [stdout]    |
[INFO] [stdout] 21 |     let mut v = vec![1, 2, 3, 4, 5];
[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/bin/collections/main.rs:82:9
[INFO] [stdout]    |
[INFO] [stdout] 82 |     let mut sss = SSS {
[INFO] [stdout]    |         ----^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `accessing`
[INFO] [stdout]   --> src/bin/collections/main.rs:11:4
[INFO] [stdout]    |
[INFO] [stdout] 11 | fn accessing() {
[INFO] [stdout]    |    ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `no_mutable_and_imutable_in_same_scope`
[INFO] [stdout]   --> src/bin/collections/main.rs:20:4
[INFO] [stdout]    |
[INFO] [stdout] 20 | fn no_mutable_and_imutable_in_same_scope() {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `edit_in_place`
[INFO] [stdout]   --> src/bin/collections/main.rs:27:4
[INFO] [stdout]    |
[INFO] [stdout] 27 | fn edit_in_place() {
[INFO] [stdout]    |    ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `enum_vec`
[INFO] [stdout]   --> src/bin/collections/main.rs:35:4
[INFO] [stdout]    |
[INFO] [stdout] 35 | fn enum_vec() {
[INFO] [stdout]    |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `stringss`
[INFO] [stdout]   --> src/bin/collections/main.rs:60:4
[INFO] [stdout]    |
[INFO] [stdout] 60 | fn stringss() {
[INFO] [stdout]    |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `vec_of_stracts`
[INFO] [stdout]   --> src/bin/collections/main.rs:75:4
[INFO] [stdout]    |
[INFO] [stdout] 75 | fn vec_of_stracts() {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `update_entry_in_a_map`
[INFO] [stdout]   --> src/bin/collections/main.rs:97:4
[INFO] [stdout]    |
[INFO] [stdout] 97 | fn update_entry_in_a_map() {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: structure field `Id` should have a snake case name
[INFO] [stdout]   --> src/bin/collections/main.rs:78:9
[INFO] [stdout]    |
[INFO] [stdout] 78 |         Id: String,
[INFO] [stdout]    |         ^^ help: convert the identifier to snake case (notice the capitalization): `id`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `t`
[INFO] [stdout]   --> src/bin/generics/traits.rs:71:56
[INFO] [stdout]    |
[INFO] [stdout] 71 | fn some_function<T: Display + Clone, U: Clone + Debug>(t: T, u: U) -> i32 {3}
[INFO] [stdout]    |                                                        ^ help: if this is intentional, prefix it with an underscore: `_t`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `u`
[INFO] [stdout]   --> src/bin/generics/traits.rs:71:62
[INFO] [stdout]    |
[INFO] [stdout] 71 | fn some_function<T: Display + Clone, U: Clone + Debug>(t: T, u: U) -> i32 {3}
[INFO] [stdout]    |                                                              ^ help: if this is intentional, prefix it with an underscore: `_u`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `t`
[INFO] [stdout]   --> src/bin/generics/traits.rs:72:35
[INFO] [stdout]    |
[INFO] [stdout] 72 | fn some_function_with_where<T, U>(t: T, u: U) -> i32
[INFO] [stdout]    |                                   ^ help: if this is intentional, prefix it with an underscore: `_t`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `u`
[INFO] [stdout]   --> src/bin/generics/traits.rs:72:41
[INFO] [stdout]    |
[INFO] [stdout] 72 | fn some_function_with_where<T, U>(t: T, u: U) -> i32
[INFO] [stdout]    |                                         ^ help: if this is intentional, prefix it with an underscore: `_u`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `notifyBound`
[INFO] [stdout]   --> src/bin/generics/traits.rs:59:8
[INFO] [stdout]    |
[INFO] [stdout] 59 | pub fn notifyBound<T: Summary>(item: T) {
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `notifyPlusSyntax`
[INFO] [stdout]   --> src/bin/generics/traits.rs:63:8
[INFO] [stdout]    |
[INFO] [stdout] 63 | pub fn notifyPlusSyntax(item: impl Summary + Display) {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `notifyWow`
[INFO] [stdout]   --> src/bin/generics/traits.rs:67:8
[INFO] [stdout]    |
[INFO] [stdout] 67 | pub fn notifyWow<T: Summary + Display>(item: T) {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `some_function`
[INFO] [stdout]   --> src/bin/generics/traits.rs:71:4
[INFO] [stdout]    |
[INFO] [stdout] 71 | fn some_function<T: Display + Clone, U: Clone + Debug>(t: T, u: U) -> i32 {3}
[INFO] [stdout]    |    ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `some_function_with_where`
[INFO] [stdout]   --> src/bin/generics/traits.rs:72:4
[INFO] [stdout]    |
[INFO] [stdout] 72 | fn some_function_with_where<T, U>(t: T, u: U) -> i32
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `returns_summarizable`
[INFO] [stdout]   --> src/bin/generics/traits.rs:78:4
[INFO] [stdout]    |
[INFO] [stdout] 78 | fn returns_summarizable() -> impl Summary {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `largest_copy`
[INFO] [stdout]   --> src/bin/generics/traits.rs:88:4
[INFO] [stdout]    |
[INFO] [stdout] 88 | fn largest_copy<T: PartialOrd + Copy>(list: &[T]) -> T {
[INFO] [stdout]    |    ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `largest_clone`
[INFO] [stdout]    --> src/bin/generics/traits.rs:100:4
[INFO] [stdout]     |
[INFO] [stdout] 100 | fn largest_clone<T>(list: &[T]) -> T
[INFO] [stdout]     |    ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `largest_ref`
[INFO] [stdout]    --> src/bin/generics/traits.rs:113:4
[INFO] [stdout]     |
[INFO] [stdout] 113 | fn largest_ref<T: PartialOrd>(list: &[T]) -> &T {
[INFO] [stdout]     |    ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Pair`
[INFO] [stdout]    --> src/bin/generics/traits.rs:123:8
[INFO] [stdout]     |
[INFO] [stdout] 123 | struct Pair<T>{
[INFO] [stdout]     |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `cmp_display`
[INFO] [stdout]    --> src/bin/generics/traits.rs:129:8
[INFO] [stdout]     |
[INFO] [stdout] 129 |     fn cmp_display(&self) {
[INFO] [stdout]     |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `is_this_an_extension_function`
[INFO] [stdout]    --> src/bin/generics/traits.rs:154:4
[INFO] [stdout]     |
[INFO] [stdout] 154 | fn is_this_an_extension_function(){
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `longest_with_an_announcement`
[INFO] [stdout]   --> src/bin/generics/lifetimes.rs:22:4
[INFO] [stdout]    |
[INFO] [stdout] 22 | fn longest_with_an_announcement<'a, T>(x: &'a str, y: &'a str, ann: T) -> &'a str
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `take_ownership`
[INFO] [stdout]   --> src/bin/generics/main.rs:26:4
[INFO] [stdout]    |
[INFO] [stdout] 26 | fn take_ownership(t: Tweet){
[INFO] [stdout]    |    ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `notifyBound` should have a snake case name
[INFO] [stdout]   --> src/bin/generics/traits.rs:59:8
[INFO] [stdout]    |
[INFO] [stdout] 59 | pub fn notifyBound<T: Summary>(item: T) {
[INFO] [stdout]    |        ^^^^^^^^^^^ help: convert the identifier to snake case: `notify_bound`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `notifyPlusSyntax` should have a snake case name
[INFO] [stdout]   --> src/bin/generics/traits.rs:63:8
[INFO] [stdout]    |
[INFO] [stdout] 63 | pub fn notifyPlusSyntax(item: impl Summary + Display) {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^ help: convert the identifier to snake case: `notify_plus_syntax`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `notifyWow` should have a snake case name
[INFO] [stdout]   --> src/bin/generics/traits.rs:67:8
[INFO] [stdout]    |
[INFO] [stdout] 67 | pub fn notifyWow<T: Summary + Display>(item: T) {
[INFO] [stdout]    |        ^^^^^^^^^ help: convert the identifier to snake case: `notify_wow`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `era`
[INFO] [stdout]  --> src/bin/guessing_game/rect.rs:8:12
[INFO] [stdout]   |
[INFO] [stdout] 8 |     pub fn era(&self) -> u32 {
[INFO] [stdout]   |            ^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `print_x`
[INFO] [stdout]   --> src/bin/guessing_game/rect.rs:12:12
[INFO] [stdout]    |
[INFO] [stdout] 12 |     pub fn print_x(&self , format: &str) {
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::env`
[INFO] [stdout]  --> src/bin/minigrep/main.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::env;
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `resp`
[INFO] [stdout]   --> src/bin/http_async/main.rs:15:9
[INFO] [stdout]    |
[INFO] [stdout] 15 |     let resp = reqwest::get("https://httpbin.org/ip")
[INFO] [stdout]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_resp`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `read_username_from_file`
[INFO] [stdout]   --> src/bin/http_async/main.rs:24:4
[INFO] [stdout]    |
[INFO] [stdout] 24 | fn read_username_from_file() -> Result<String, io::Error> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 13 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 21 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 33.72s
[INFO] running `Command { std: "docker" "inspect" "a1d1256944dacf42b55d50d99093579464241a1293d79cadc71f863ed4748188", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a1d1256944dacf42b55d50d99093579464241a1293d79cadc71f863ed4748188", kill_on_drop: false }`
[INFO] [stdout] a1d1256944dacf42b55d50d99093579464241a1293d79cadc71f863ed4748188
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-93/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-93/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-08-01" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4ce119a6ee39ac06a1153e8a4143a62d25333014441884f4f9cbce5fe6a867a6
[INFO] running `Command { std: "docker" "start" "-a" "4ce119a6ee39ac06a1153e8a4143a62d25333014441884f4f9cbce5fe6a867a6", kill_on_drop: false }`
[INFO] [stdout] warning: unused import: `std::str::FromStr`
[INFO] [stdout]  --> src/lib/config.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::str::FromStr;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `args`
[INFO] [stdout]   --> src/lib/config.rs:31:9
[INFO] [stdout]    |
[INFO] [stdout] 31 |     let args: Vec<String> = env::args().collect();
[INFO] [stdout]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_args`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `c1`
[INFO] [stdout]   --> src/lib/pub_use.rs:31:16
[INFO] [stdout]    |
[INFO] [stdout] 31 |     pub fn mix(c1: PrimaryColor, c2: PrimaryColor) -> SecondaryColor {
[INFO] [stdout]    |                ^^ help: if this is intentional, prefix it with an underscore: `_c1`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `c2`
[INFO] [stdout]   --> src/lib/pub_use.rs:31:34
[INFO] [stdout]    |
[INFO] [stdout] 31 |     pub fn mix(c1: PrimaryColor, c2: PrimaryColor) -> SecondaryColor {
[INFO] [stdout]    |                                  ^^ help: if this is intentional, prefix it with an underscore: `_c2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling guessing_game_viggin v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `meta`
[INFO] [stdout]   --> src/bin/errors/errors.rs:31:15
[INFO] [stdout]    |
[INFO] [stdout] 31 |     if let Ok(meta) = f.metadata() {
[INFO] [stdout]    |               ^^^^ help: if this is intentional, prefix it with an underscore: `_meta`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/bin/errors/errors.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 12 |     read_username_from_file_v2();
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/bin/errors/errors.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 13 |     read_username_from_file_v3();
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/bin/errors/errors.rs:32:9
[INFO] [stdout]    |
[INFO] [stdout] 32 |         fs::remove_file("hello.txt");
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `DA`
[INFO] [stdout]   --> src/bin/enums/main.rs:28:8
[INFO] [stdout]    |
[INFO] [stdout] 28 | struct DA {
[INFO] [stdout]    |        ^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `t`
[INFO] [stdout]   --> src/bin/generics/traits.rs:71:56
[INFO] [stdout]    |
[INFO] [stdout] 71 | fn some_function<T: Display + Clone, U: Clone + Debug>(t: T, u: U) -> i32 {3}
[INFO] [stdout]    |                                                        ^ help: if this is intentional, prefix it with an underscore: `_t`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `u`
[INFO] [stdout]   --> src/bin/generics/traits.rs:71:62
[INFO] [stdout]    |
[INFO] [stdout] 71 | fn some_function<T: Display + Clone, U: Clone + Debug>(t: T, u: U) -> i32 {3}
[INFO] [stdout]    |                                                              ^ help: if this is intentional, prefix it with an underscore: `_u`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `t`
[INFO] [stdout]   --> src/bin/generics/traits.rs:72:35
[INFO] [stdout]    |
[INFO] [stdout] 72 | fn some_function_with_where<T, U>(t: T, u: U) -> i32
[INFO] [stdout]    |                                   ^ help: if this is intentional, prefix it with an underscore: `_t`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `u`
[INFO] [stdout]   --> src/bin/generics/traits.rs:72:41
[INFO] [stdout]    |
[INFO] [stdout] 72 | fn some_function_with_where<T, U>(t: T, u: U) -> i32
[INFO] [stdout]    |                                         ^ help: if this is intentional, prefix it with an underscore: `_u`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `notifyBound`
[INFO] [stdout]   --> src/bin/generics/traits.rs:59:8
[INFO] [stdout]    |
[INFO] [stdout] 59 | pub fn notifyBound<T: Summary>(item: T) {
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `notifyPlusSyntax`
[INFO] [stdout]   --> src/bin/generics/traits.rs:63:8
[INFO] [stdout]    |
[INFO] [stdout] 63 | pub fn notifyPlusSyntax(item: impl Summary + Display) {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `notifyWow`
[INFO] [stdout]   --> src/bin/generics/traits.rs:67:8
[INFO] [stdout]    |
[INFO] [stdout] 67 | pub fn notifyWow<T: Summary + Display>(item: T) {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `some_function`
[INFO] [stdout]   --> src/bin/generics/traits.rs:71:4
[INFO] [stdout]    |
[INFO] [stdout] 71 | fn some_function<T: Display + Clone, U: Clone + Debug>(t: T, u: U) -> i32 {3}
[INFO] [stdout]    |    ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `some_function_with_where`
[INFO] [stdout]   --> src/bin/generics/traits.rs:72:4
[INFO] [stdout]    |
[INFO] [stdout] 72 | fn some_function_with_where<T, U>(t: T, u: U) -> i32
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `returns_summarizable`
[INFO] [stdout]   --> src/bin/generics/traits.rs:78:4
[INFO] [stdout]    |
[INFO] [stdout] 78 | fn returns_summarizable() -> impl Summary {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `largest_copy`
[INFO] [stdout]   --> src/bin/generics/traits.rs:88:4
[INFO] [stdout]    |
[INFO] [stdout] 88 | fn largest_copy<T: PartialOrd + Copy>(list: &[T]) -> T {
[INFO] [stdout]    |    ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `largest_clone`
[INFO] [stdout]    --> src/bin/generics/traits.rs:100:4
[INFO] [stdout]     |
[INFO] [stdout] 100 | fn largest_clone<T>(list: &[T]) -> T
[INFO] [stdout]     |    ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `largest_ref`
[INFO] [stdout]    --> src/bin/generics/traits.rs:113:4
[INFO] [stdout]     |
[INFO] [stdout] 113 | fn largest_ref<T: PartialOrd>(list: &[T]) -> &T {
[INFO] [stdout]     |    ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Pair`
[INFO] [stdout]    --> src/bin/generics/traits.rs:123:8
[INFO] [stdout]     |
[INFO] [stdout] 123 | struct Pair<T>{
[INFO] [stdout]     |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `cmp_display`
[INFO] [stdout]    --> src/bin/generics/traits.rs:129:8
[INFO] [stdout]     |
[INFO] [stdout] 129 |     fn cmp_display(&self) {
[INFO] [stdout]     |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `is_this_an_extension_function`
[INFO] [stdout]    --> src/bin/generics/traits.rs:154:4
[INFO] [stdout]     |
[INFO] [stdout] 154 | fn is_this_an_extension_function(){
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `longest_with_an_announcement`
[INFO] [stdout]   --> src/bin/generics/lifetimes.rs:22:4
[INFO] [stdout]    |
[INFO] [stdout] 22 | fn longest_with_an_announcement<'a, T>(x: &'a str, y: &'a str, ann: T) -> &'a str
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `take_ownership`
[INFO] [stdout]   --> src/bin/generics/main.rs:26:4
[INFO] [stdout]    |
[INFO] [stdout] 26 | fn take_ownership(t: Tweet){
[INFO] [stdout]    |    ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `notifyBound` should have a snake case name
[INFO] [stdout]   --> src/bin/generics/traits.rs:59:8
[INFO] [stdout]    |
[INFO] [stdout] 59 | pub fn notifyBound<T: Summary>(item: T) {
[INFO] [stdout]    |        ^^^^^^^^^^^ help: convert the identifier to snake case: `notify_bound`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `notifyPlusSyntax` should have a snake case name
[INFO] [stdout]   --> src/bin/generics/traits.rs:63:8
[INFO] [stdout]    |
[INFO] [stdout] 63 | pub fn notifyPlusSyntax(item: impl Summary + Display) {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^ help: convert the identifier to snake case: `notify_plus_syntax`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `notifyWow` should have a snake case name
[INFO] [stdout]   --> src/bin/generics/traits.rs:67:8
[INFO] [stdout]    |
[INFO] [stdout] 67 | pub fn notifyWow<T: Summary + Display>(item: T) {
[INFO] [stdout]    |        ^^^^^^^^^ help: convert the identifier to snake case: `notify_wow`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 21 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `resp`
[INFO] [stdout]   --> src/bin/http_async/main.rs:15:9
[INFO] [stdout]    |
[INFO] [stdout] 15 |     let resp = reqwest::get("https://httpbin.org/ip")
[INFO] [stdout]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_resp`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `read_username_from_file`
[INFO] [stdout]   --> src/bin/http_async/main.rs:24:4
[INFO] [stdout]    |
[INFO] [stdout] 24 | fn read_username_from_file() -> Result<String, io::Error> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]   --> src/bin/collections/main.rs:89:6
[INFO] [stdout]    |
[INFO] [stdout] 89 |     };
[INFO] [stdout]    |      ^ help: remove this semicolon
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(redundant_semicolons)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `v`
[INFO] [stdout]   --> src/bin/collections/main.rs:12:9
[INFO] [stdout]    |
[INFO] [stdout] 12 |     let v: Vec<u128> = Vec::new();
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_v`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `s2` is never read
[INFO] [stdout]   --> src/bin/collections/main.rs:71:5
[INFO] [stdout]    |
[INFO] [stdout] 71 |     s2 = String::from("xxx");
[INFO] [stdout]    |     ^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/bin/collections/main.rs:21:9
[INFO] [stdout]    |
[INFO] [stdout] 21 |     let mut v = vec![1, 2, 3, 4, 5];
[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/bin/collections/main.rs:82:9
[INFO] [stdout]    |
[INFO] [stdout] 82 |     let mut sss = SSS {
[INFO] [stdout]    |         ----^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `accessing`
[INFO] [stdout]   --> src/bin/collections/main.rs:11:4
[INFO] [stdout]    |
[INFO] [stdout] 11 | fn accessing() {
[INFO] [stdout]    |    ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `no_mutable_and_imutable_in_same_scope`
[INFO] [stdout]   --> src/bin/collections/main.rs:20:4
[INFO] [stdout]    |
[INFO] [stdout] 20 | fn no_mutable_and_imutable_in_same_scope() {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `edit_in_place`
[INFO] [stdout]   --> src/bin/collections/main.rs:27:4
[INFO] [stdout]    |
[INFO] [stdout] 27 | fn edit_in_place() {
[INFO] [stdout]    |    ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `enum_vec`
[INFO] [stdout]   --> src/bin/collections/main.rs:35:4
[INFO] [stdout]    |
[INFO] [stdout] 35 | fn enum_vec() {
[INFO] [stdout]    |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `stringss`
[INFO] [stdout]   --> src/bin/collections/main.rs:60:4
[INFO] [stdout]    |
[INFO] [stdout] 60 | fn stringss() {
[INFO] [stdout]    |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `vec_of_stracts`
[INFO] [stdout]   --> src/bin/collections/main.rs:75:4
[INFO] [stdout]    |
[INFO] [stdout] 75 | fn vec_of_stracts() {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `update_entry_in_a_map`
[INFO] [stdout]   --> src/bin/collections/main.rs:97:4
[INFO] [stdout]    |
[INFO] [stdout] 97 | fn update_entry_in_a_map() {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: structure field `Id` should have a snake case name
[INFO] [stdout]   --> src/bin/collections/main.rs:78:9
[INFO] [stdout]    |
[INFO] [stdout] 78 |         Id: String,
[INFO] [stdout]    |         ^^ help: convert the identifier to snake case (notice the capitalization): `id`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 13 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `can_hold`
[INFO] [stdout]   --> src/bin/tests/main.rs:14:8
[INFO] [stdout]    |
[INFO] [stdout] 14 |     fn can_hold(&self, other: &Rectangle) -> bool {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `era`
[INFO] [stdout]  --> src/bin/guessing_game/rect.rs:8:12
[INFO] [stdout]   |
[INFO] [stdout] 8 |     pub fn era(&self) -> u32 {
[INFO] [stdout]   |            ^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `print_x`
[INFO] [stdout]   --> src/bin/guessing_game/rect.rs:12:12
[INFO] [stdout]    |
[INFO] [stdout] 12 |     pub fn print_x(&self , format: &str) {
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]   --> src/bin/closures/main.rs:32:9
[INFO] [stdout]    |
[INFO] [stdout] 32 |     let x = 4;
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `shoes_in_my_size`
[INFO] [stdout]   --> src/bin/closures/iterators.rs:61:4
[INFO] [stdout]    |
[INFO] [stdout] 61 | fn shoes_in_my_size(shoes: Vec<Shoe>, shoe_size: u32) -> Vec<Shoe> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/bin/closures/iterators.rs:92:8
[INFO] [stdout]    |
[INFO] [stdout] 92 |     fn new() -> Counter {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `simulated_expensive_calculation`
[INFO] [stdout]  --> src/bin/closures/main.rs:9:4
[INFO] [stdout]   |
[INFO] [stdout] 9 | fn simulated_expensive_calculation(intensity: u32) -> u32 {
[INFO] [stdout]   |    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `inner_func`
[INFO] [stdout]   --> src/bin/closures/main.rs:31:4
[INFO] [stdout]    |
[INFO] [stdout] 31 | fn inner_func(){
[INFO] [stdout]    |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::env`
[INFO] [stdout]  --> src/bin/minigrep/main.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::env;
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `word_count`
[INFO] [stdout]   --> src/bin/hash/main.rs:62:9
[INFO] [stdout]    |
[INFO] [stdout] 62 |     let word_count : HashMap<_,_> = v.iter()
[INFO] [stdout]    |         ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_word_count`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `zzip`
[INFO] [stdout]   --> src/bin/hash/main.rs:60:4
[INFO] [stdout]    |
[INFO] [stdout] 60 | fn zzip(v : &Vec<u8>){
[INFO] [stdout]    |    ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::str::FromStr`
[INFO] [stdout]  --> src/lib/config.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::str::FromStr;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `args`
[INFO] [stdout]   --> src/lib/config.rs:31:9
[INFO] [stdout]    |
[INFO] [stdout] 31 |     let args: Vec<String> = env::args().collect();
[INFO] [stdout]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_args`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `c1`
[INFO] [stdout]   --> src/lib/pub_use.rs:31:16
[INFO] [stdout]    |
[INFO] [stdout] 31 |     pub fn mix(c1: PrimaryColor, c2: PrimaryColor) -> SecondaryColor {
[INFO] [stdout]    |                ^^ help: if this is intentional, prefix it with an underscore: `_c1`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `c2`
[INFO] [stdout]   --> src/lib/pub_use.rs:31:34
[INFO] [stdout]    |
[INFO] [stdout] 31 |     pub fn mix(c1: PrimaryColor, c2: PrimaryColor) -> SecondaryColor {
[INFO] [stdout]    |                                  ^^ help: if this is intentional, prefix it with an underscore: `_c2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::env`
[INFO] [stdout]  --> src/bin/minigrep/main.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::env;
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `meta`
[INFO] [stdout]   --> src/bin/errors/errors.rs:31:15
[INFO] [stdout]    |
[INFO] [stdout] 31 |     if let Ok(meta) = f.metadata() {
[INFO] [stdout]    |               ^^^^ help: if this is intentional, prefix it with an underscore: `_meta`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `era`
[INFO] [stdout]  --> src/bin/guessing_game/rect.rs:8:12
[INFO] [stdout]   |
[INFO] [stdout] 8 |     pub fn era(&self) -> u32 {
[INFO] [stdout]   |            ^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `print_x`
[INFO] [stdout]   --> src/bin/guessing_game/rect.rs:12:12
[INFO] [stdout]    |
[INFO] [stdout] 12 |     pub fn print_x(&self , format: &str) {
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]   --> src/bin/collections/main.rs:89:6
[INFO] [stdout]    |
[INFO] [stdout] 89 |     };
[INFO] [stdout]    |      ^ help: remove this semicolon
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(redundant_semicolons)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `super::*`
[INFO] [stdout]  --> src/bin/closures/iterators.rs:7:9
[INFO] [stdout]   |
[INFO] [stdout] 7 |     use super::*;
[INFO] [stdout]   |         ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `word_count`
[INFO] [stdout]   --> src/bin/hash/main.rs:62:9
[INFO] [stdout]    |
[INFO] [stdout] 62 |     let word_count : HashMap<_,_> = v.iter()
[INFO] [stdout]    |         ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_word_count`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `t`
[INFO] [stdout]   --> src/bin/generics/traits.rs:71:56
[INFO] [stdout]    |
[INFO] [stdout] 71 | fn some_function<T: Display + Clone, U: Clone + Debug>(t: T, u: U) -> i32 {3}
[INFO] [stdout]    |                                                        ^ help: if this is intentional, prefix it with an underscore: `_t`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/bin/errors/errors.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 12 |     read_username_from_file_v2();
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/bin/errors/errors.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 13 |     read_username_from_file_v3();
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/bin/errors/errors.rs:32:9
[INFO] [stdout]    |
[INFO] [stdout] 32 |         fs::remove_file("hello.txt");
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `u`
[INFO] [stdout]   --> src/bin/generics/traits.rs:71:62
[INFO] [stdout]    |
[INFO] [stdout] 71 | fn some_function<T: Display + Clone, U: Clone + Debug>(t: T, u: U) -> i32 {3}
[INFO] [stdout]    |                                                              ^ help: if this is intentional, prefix it with an underscore: `_u`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `DA`
[INFO] [stdout]   --> src/bin/enums/main.rs:28:8
[INFO] [stdout]    |
[INFO] [stdout] 28 | struct DA {
[INFO] [stdout]    |        ^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `zzip`
[INFO] [stdout]   --> src/bin/hash/main.rs:60:4
[INFO] [stdout]    |
[INFO] [stdout] 60 | fn zzip(v : &Vec<u8>){
[INFO] [stdout]    |    ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `v`
[INFO] [stdout]   --> src/bin/collections/main.rs:12:9
[INFO] [stdout]    |
[INFO] [stdout] 12 |     let v: Vec<u128> = Vec::new();
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_v`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `s2` is never read
[INFO] [stdout]   --> src/bin/collections/main.rs:71:5
[INFO] [stdout]    |
[INFO] [stdout] 71 |     s2 = String::from("xxx");
[INFO] [stdout]    |     ^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `t`
[INFO] [stdout]   --> src/bin/generics/traits.rs:72:35
[INFO] [stdout]    |
[INFO] [stdout] 72 | fn some_function_with_where<T, U>(t: T, u: U) -> i32
[INFO] [stdout]    |                                   ^ help: if this is intentional, prefix it with an underscore: `_t`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `u`
[INFO] [stdout]   --> src/bin/generics/traits.rs:72:41
[INFO] [stdout]    |
[INFO] [stdout] 72 | fn some_function_with_where<T, U>(t: T, u: U) -> i32
[INFO] [stdout]    |                                         ^ help: if this is intentional, prefix it with an underscore: `_u`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `notifyBound`
[INFO] [stdout]   --> src/bin/generics/traits.rs:59:8
[INFO] [stdout]    |
[INFO] [stdout] 59 | pub fn notifyBound<T: Summary>(item: T) {
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `notifyPlusSyntax`
[INFO] [stdout]   --> src/bin/generics/traits.rs:63:8
[INFO] [stdout]    |
[INFO] [stdout] 63 | pub fn notifyPlusSyntax(item: impl Summary + Display) {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `notifyWow`
[INFO] [stdout]   --> src/bin/generics/traits.rs:67:8
[INFO] [stdout]    |
[INFO] [stdout] 67 | pub fn notifyWow<T: Summary + Display>(item: T) {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `some_function`
[INFO] [stdout]   --> src/bin/generics/traits.rs:71:4
[INFO] [stdout]    |
[INFO] [stdout] 71 | fn some_function<T: Display + Clone, U: Clone + Debug>(t: T, u: U) -> i32 {3}
[INFO] [stdout]    |    ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `some_function_with_where`
[INFO] [stdout]   --> src/bin/generics/traits.rs:72:4
[INFO] [stdout]    |
[INFO] [stdout] 72 | fn some_function_with_where<T, U>(t: T, u: U) -> i32
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `returns_summarizable`
[INFO] [stdout]   --> src/bin/generics/traits.rs:78:4
[INFO] [stdout]    |
[INFO] [stdout] 78 | fn returns_summarizable() -> impl Summary {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `largest_copy`
[INFO] [stdout]   --> src/bin/generics/traits.rs:88:4
[INFO] [stdout]    |
[INFO] [stdout] 88 | fn largest_copy<T: PartialOrd + Copy>(list: &[T]) -> T {
[INFO] [stdout]    |    ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `largest_clone`
[INFO] [stdout]    --> src/bin/generics/traits.rs:100:4
[INFO] [stdout]     |
[INFO] [stdout] 100 | fn largest_clone<T>(list: &[T]) -> T
[INFO] [stdout]     |    ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `largest_ref`
[INFO] [stdout]    --> src/bin/generics/traits.rs:113:4
[INFO] [stdout]     |
[INFO] [stdout] 113 | fn largest_ref<T: PartialOrd>(list: &[T]) -> &T {
[INFO] [stdout]     |    ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Pair`
[INFO] [stdout]    --> src/bin/generics/traits.rs:123:8
[INFO] [stdout]     |
[INFO] [stdout] 123 | struct Pair<T>{
[INFO] [stdout]     |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `cmp_display`
[INFO] [stdout]    --> src/bin/generics/traits.rs:129:8
[INFO] [stdout]     |
[INFO] [stdout] 129 |     fn cmp_display(&self) {
[INFO] [stdout]     |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `is_this_an_extension_function`
[INFO] [stdout]    --> src/bin/generics/traits.rs:154:4
[INFO] [stdout]     |
[INFO] [stdout] 154 | fn is_this_an_extension_function(){
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `longest_with_an_announcement`
[INFO] [stdout]   --> src/bin/generics/lifetimes.rs:22:4
[INFO] [stdout]    |
[INFO] [stdout] 22 | fn longest_with_an_announcement<'a, T>(x: &'a str, y: &'a str, ann: T) -> &'a str
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `take_ownership`
[INFO] [stdout]   --> src/bin/generics/main.rs:26:4
[INFO] [stdout]    |
[INFO] [stdout] 26 | fn take_ownership(t: Tweet){
[INFO] [stdout]    |    ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `notifyBound` should have a snake case name
[INFO] [stdout]   --> src/bin/generics/traits.rs:59:8
[INFO] [stdout]    |
[INFO] [stdout] 59 | pub fn notifyBound<T: Summary>(item: T) {
[INFO] [stdout]    |        ^^^^^^^^^^^ help: convert the identifier to snake case: `notify_bound`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `notifyPlusSyntax` should have a snake case name
[INFO] [stdout]   --> src/bin/generics/traits.rs:63:8
[INFO] [stdout]    |
[INFO] [stdout] 63 | pub fn notifyPlusSyntax(item: impl Summary + Display) {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^ help: convert the identifier to snake case: `notify_plus_syntax`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `notifyWow` should have a snake case name
[INFO] [stdout]   --> src/bin/generics/traits.rs:67:8
[INFO] [stdout]    |
[INFO] [stdout] 67 | pub fn notifyWow<T: Summary + Display>(item: T) {
[INFO] [stdout]    |        ^^^^^^^^^ help: convert the identifier to snake case: `notify_wow`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/bin/collections/main.rs:21:9
[INFO] [stdout]    |
[INFO] [stdout] 21 |     let mut v = vec![1, 2, 3, 4, 5];
[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/bin/collections/main.rs:82:9
[INFO] [stdout]    |
[INFO] [stdout] 82 |     let mut sss = SSS {
[INFO] [stdout]    |         ----^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]   --> src/bin/closures/main.rs:32:9
[INFO] [stdout]    |
[INFO] [stdout] 32 |     let x = 4;
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `accessing`
[INFO] [stdout]   --> src/bin/collections/main.rs:11:4
[INFO] [stdout]    |
[INFO] [stdout] 11 | fn accessing() {
[INFO] [stdout]    |    ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `no_mutable_and_imutable_in_same_scope`
[INFO] [stdout]   --> src/bin/collections/main.rs:20:4
[INFO] [stdout]    |
[INFO] [stdout] 20 | fn no_mutable_and_imutable_in_same_scope() {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `edit_in_place`
[INFO] [stdout]   --> src/bin/collections/main.rs:27:4
[INFO] [stdout]    |
[INFO] [stdout] 27 | fn edit_in_place() {
[INFO] [stdout]    |    ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `enum_vec`
[INFO] [stdout]   --> src/bin/collections/main.rs:35:4
[INFO] [stdout]    |
[INFO] [stdout] 35 | fn enum_vec() {
[INFO] [stdout]    |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `stringss`
[INFO] [stdout]   --> src/bin/collections/main.rs:60:4
[INFO] [stdout]    |
[INFO] [stdout] 60 | fn stringss() {
[INFO] [stdout]    |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `vec_of_stracts`
[INFO] [stdout]   --> src/bin/collections/main.rs:75:4
[INFO] [stdout]    |
[INFO] [stdout] 75 | fn vec_of_stracts() {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `update_entry_in_a_map`
[INFO] [stdout]   --> src/bin/collections/main.rs:97:4
[INFO] [stdout]    |
[INFO] [stdout] 97 | fn update_entry_in_a_map() {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: structure field `Id` should have a snake case name
[INFO] [stdout]   --> src/bin/collections/main.rs:78:9
[INFO] [stdout]    |
[INFO] [stdout] 78 |         Id: String,
[INFO] [stdout]    |         ^^ help: convert the identifier to snake case (notice the capitalization): `id`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `simulated_expensive_calculation`
[INFO] [stdout]  --> src/bin/closures/main.rs:9:4
[INFO] [stdout]   |
[INFO] [stdout] 9 | fn simulated_expensive_calculation(intensity: u32) -> u32 {
[INFO] [stdout]   |    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `inner_func`
[INFO] [stdout]   --> src/bin/closures/main.rs:31:4
[INFO] [stdout]    |
[INFO] [stdout] 31 | fn inner_func(){
[INFO] [stdout]    |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `resp`
[INFO] [stdout]   --> src/bin/http_async/main.rs:15:9
[INFO] [stdout]    |
[INFO] [stdout] 15 |     let resp = reqwest::get("https://httpbin.org/ip")
[INFO] [stdout]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_resp`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `read_username_from_file`
[INFO] [stdout]   --> src/bin/http_async/main.rs:24:4
[INFO] [stdout]    |
[INFO] [stdout] 24 | fn read_username_from_file() -> Result<String, io::Error> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 21 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 13 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.09s
[INFO] running `Command { std: "docker" "inspect" "4ce119a6ee39ac06a1153e8a4143a62d25333014441884f4f9cbce5fe6a867a6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4ce119a6ee39ac06a1153e8a4143a62d25333014441884f4f9cbce5fe6a867a6", kill_on_drop: false }`
[INFO] [stdout] 4ce119a6ee39ac06a1153e8a4143a62d25333014441884f4f9cbce5fe6a867a6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-93/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-93/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-08-01" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] dec9186543597a6f97c6b506038f0c66cf88cb92306d0317c1d886d33a2f3b97
[INFO] running `Command { std: "docker" "start" "-a" "dec9186543597a6f97c6b506038f0c66cf88cb92306d0317c1d886d33a2f3b97", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr] warning: unused import: `std::str::FromStr`
[INFO] [stderr]  --> src/lib/config.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 | use std::str::FromStr;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `args`
[INFO] [stderr]   --> src/lib/config.rs:31:9
[INFO] [stderr]    |
[INFO] [stderr] 31 |     let args: Vec<String> = env::args().collect();
[INFO] [stderr]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_args`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `c1`
[INFO] [stderr]   --> src/lib/pub_use.rs:31:16
[INFO] [stderr]    |
[INFO] [stderr] 31 |     pub fn mix(c1: PrimaryColor, c2: PrimaryColor) -> SecondaryColor {
[INFO] [stderr]    |                ^^ help: if this is intentional, prefix it with an underscore: `_c1`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `c2`
[INFO] [stderr]   --> src/lib/pub_use.rs:31:34
[INFO] [stderr]    |
[INFO] [stderr] 31 |     pub fn mix(c1: PrimaryColor, c2: PrimaryColor) -> SecondaryColor {
[INFO] [stderr]    |                                  ^^ help: if this is intentional, prefix it with an underscore: `_c2`
[INFO] [stderr] 
[INFO] [stderr] warning: `guessing_game_viggin` (lib) generated 4 warnings
[INFO] [stderr] warning: `guessing_game_viggin` (lib test) generated 4 warnings (4 duplicates)
[INFO] [stderr] warning: unused import: `super::*`
[INFO] [stderr]  --> src/bin/closures/iterators.rs:7:9
[INFO] [stderr]   |
[INFO] [stderr] 7 |     use super::*;
[INFO] [stderr]   |         ^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `x`
[INFO] [stderr]   --> src/bin/closures/main.rs:32:9
[INFO] [stderr]    |
[INFO] [stderr] 32 |     let x = 4;
[INFO] [stderr]    |         ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `simulated_expensive_calculation`
[INFO] [stderr]  --> src/bin/closures/main.rs:9:4
[INFO] [stderr]   |
[INFO] [stderr] 9 | fn simulated_expensive_calculation(intensity: u32) -> u32 {
[INFO] [stderr]   |    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `inner_func`
[INFO] [stderr]   --> src/bin/closures/main.rs:31:4
[INFO] [stderr]    |
[INFO] [stderr] 31 | fn inner_func(){
[INFO] [stderr]    |    ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `word_count`
[INFO] [stderr]   --> src/bin/hash/main.rs:62:9
[INFO] [stderr]    |
[INFO] [stderr] 62 |     let word_count : HashMap<_,_> = v.iter()
[INFO] [stderr]    |         ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_word_count`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `zzip`
[INFO] [stderr]   --> src/bin/hash/main.rs:60:4
[INFO] [stderr]    |
[INFO] [stderr] 60 | fn zzip(v : &Vec<u8>){
[INFO] [stderr]    |    ^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `can_hold`
[INFO] [stderr]   --> src/bin/tests/main.rs:14:8
[INFO] [stderr]    |
[INFO] [stderr] 14 |     fn can_hold(&self, other: &Rectangle) -> bool {
[INFO] [stderr]    |        ^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::env`
[INFO] [stderr]  --> src/bin/minigrep/main.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::env;
[INFO] [stderr]   |     ^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `meta`
[INFO] [stderr]   --> src/bin/errors/errors.rs:31:15
[INFO] [stderr]    |
[INFO] [stderr] 31 |     if let Ok(meta) = f.metadata() {
[INFO] [stderr]    |               ^^^^ help: if this is intentional, prefix it with an underscore: `_meta`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused `Result` that must be used
[INFO] [stderr]   --> src/bin/errors/errors.rs:12:5
[INFO] [stderr]    |
[INFO] [stderr] 12 |     read_username_from_file_v2();
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `Result` that must be used
[INFO] [stderr]   --> src/bin/errors/errors.rs:13:5
[INFO] [stderr]    |
[INFO] [stderr] 13 |     read_username_from_file_v3();
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `Result` that must be used
[INFO] [stderr]   --> src/bin/errors/errors.rs:32:9
[INFO] [stderr]    |
[INFO] [stderr] 32 |         fs::remove_file("hello.txt");
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `era`
[INFO] [stderr]  --> src/bin/guessing_game/rect.rs:8:12
[INFO] [stderr]   |
[INFO] [stderr] 8 |     pub fn era(&self) -> u32 {
[INFO] [stderr]   |            ^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `print_x`
[INFO] [stderr]   --> src/bin/guessing_game/rect.rs:12:12
[INFO] [stderr]    |
[INFO] [stderr] 12 |     pub fn print_x(&self , format: &str) {
[INFO] [stderr]    |            ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `t`
[INFO] [stderr]   --> src/bin/generics/traits.rs:71:56
[INFO] [stderr]    |
[INFO] [stderr] 71 | fn some_function<T: Display + Clone, U: Clone + Debug>(t: T, u: U) -> i32 {3}
[INFO] [stderr]    |                                                        ^ help: if this is intentional, prefix it with an underscore: `_t`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `u`
[INFO] [stderr]   --> src/bin/generics/traits.rs:71:62
[INFO] [stderr]    |
[INFO] [stderr] 71 | fn some_function<T: Display + Clone, U: Clone + Debug>(t: T, u: U) -> i32 {3}
[INFO] [stderr]    |                                                              ^ help: if this is intentional, prefix it with an underscore: `_u`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `t`
[INFO] [stderr]   --> src/bin/generics/traits.rs:72:35
[INFO] [stderr]    |
[INFO] [stderr] 72 | fn some_function_with_where<T, U>(t: T, u: U) -> i32
[INFO] [stderr]    |                                   ^ help: if this is intentional, prefix it with an underscore: `_t`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `u`
[INFO] [stderr]   --> src/bin/generics/traits.rs:72:41
[INFO] [stderr]    |
[INFO] [stderr] 72 | fn some_function_with_where<T, U>(t: T, u: U) -> i32
[INFO] [stderr]    |                                         ^ help: if this is intentional, prefix it with an underscore: `_u`
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `notifyBound`
[INFO] [stderr]   --> src/bin/generics/traits.rs:59:8
[INFO] [stderr]    |
[INFO] [stderr] 59 | pub fn notifyBound<T: Summary>(item: T) {
[INFO] [stderr]    |        ^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `notifyPlusSyntax`
[INFO] [stderr]   --> src/bin/generics/traits.rs:63:8
[INFO] [stderr]    |
[INFO] [stderr] 63 | pub fn notifyPlusSyntax(item: impl Summary + Display) {
[INFO] [stderr]    |        ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `notifyWow`
[INFO] [stderr]   --> src/bin/generics/traits.rs:67:8
[INFO] [stderr]    |
[INFO] [stderr] 67 | pub fn notifyWow<T: Summary + Display>(item: T) {
[INFO] [stderr]    |        ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `some_function`
[INFO] [stderr]   --> src/bin/generics/traits.rs:71:4
[INFO] [stderr]    |
[INFO] [stderr] 71 | fn some_function<T: Display + Clone, U: Clone + Debug>(t: T, u: U) -> i32 {3}
[INFO] [stderr]    |    ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `some_function_with_where`
[INFO] [stderr]   --> src/bin/generics/traits.rs:72:4
[INFO] [stderr]    |
[INFO] [stderr] 72 | fn some_function_with_where<T, U>(t: T, u: U) -> i32
[INFO] [stderr]    |    ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `returns_summarizable`
[INFO] [stderr]   --> src/bin/generics/traits.rs:78:4
[INFO] [stderr]    |
[INFO] [stderr] 78 | fn returns_summarizable() -> impl Summary {
[INFO] [stderr]    |    ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `largest_copy`
[INFO] [stderr]   --> src/bin/generics/traits.rs:88:4
[INFO] [stderr]    |
[INFO] [stderr] 88 | fn largest_copy<T: PartialOrd + Copy>(list: &[T]) -> T {
[INFO] [stderr]    |    ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `largest_clone`
[INFO] [stderr]    --> src/bin/generics/traits.rs:100:4
[INFO] [stderr]     |
[INFO] [stderr] 100 | fn largest_clone<T>(list: &[T]) -> T
[INFO] [stderr]     |    ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `largest_ref`
[INFO] [stderr]    --> src/bin/generics/traits.rs:113:4
[INFO] [stderr]     |
[INFO] [stderr] 113 | fn largest_ref<T: PartialOrd>(list: &[T]) -> &T {
[INFO] [stderr]     |    ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Pair`
[INFO] [stderr]    --> src/bin/generics/traits.rs:123:8
[INFO] [stderr]     |
[INFO] [stderr] 123 | struct Pair<T>{
[INFO] [stderr]     |        ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `cmp_display`
[INFO] [stderr]    --> src/bin/generics/traits.rs:129:8
[INFO] [stderr]     |
[INFO] [stderr] 129 |     fn cmp_display(&self) {
[INFO] [stderr]     |        ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `is_this_an_extension_function`
[INFO] [stderr]    --> src/bin/generics/traits.rs:154:4
[INFO] [stderr]     |
[INFO] [stderr] 154 | fn is_this_an_extension_function(){
[INFO] [stderr]     |    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `longest_with_an_announcement`
[INFO] [stderr]   --> src/bin/generics/lifetimes.rs:22:4
[INFO] [stderr]    |
[INFO] [stderr] 22 | fn longest_with_an_announcement<'a, T>(x: &'a str, y: &'a str, ann: T) -> &'a str
[INFO] [stderr]    |    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `take_ownership`
[INFO] [stderr]   --> src/bin/generics/main.rs:26:4
[INFO] [stderr]    |
[INFO] [stderr] 26 | fn take_ownership(t: Tweet){
[INFO] [stderr]    |    ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `notifyBound` should have a snake case name
[INFO] [stderr]   --> src/bin/generics/traits.rs:59:8
[INFO] [stderr]    |
[INFO] [stderr] 59 | pub fn notifyBound<T: Summary>(item: T) {
[INFO] [stderr]    |        ^^^^^^^^^^^ help: convert the identifier to snake case: `notify_bound`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(non_snake_case)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function `notifyPlusSyntax` should have a snake case name
[INFO] [stderr]   --> src/bin/generics/traits.rs:63:8
[INFO] [stderr]    |
[INFO] [stderr] 63 | pub fn notifyPlusSyntax(item: impl Summary + Display) {
[INFO] [stderr]    |        ^^^^^^^^^^^^^^^^ help: convert the identifier to snake case: `notify_plus_syntax`
[INFO] [stderr] 
[INFO] [stderr] warning: function `notifyWow` should have a snake case name
[INFO] [stderr]   --> src/bin/generics/traits.rs:67:8
[INFO] [stderr]    |
[INFO] [stderr] 67 | pub fn notifyWow<T: Summary + Display>(item: T) {
[INFO] [stderr]    |        ^^^^^^^^^ help: convert the identifier to snake case: `notify_wow`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `resp`
[INFO] [stderr]   --> src/bin/http_async/main.rs:15:9
[INFO] [stderr]    |
[INFO] [stderr] 15 |     let resp = reqwest::get("https://httpbin.org/ip")
[INFO] [stderr]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_resp`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `read_username_from_file`
[INFO] [stderr]   --> src/bin/http_async/main.rs:24:4
[INFO] [stderr]    |
[INFO] [stderr] 24 | fn read_username_from_file() -> Result<String, io::Error> {
[INFO] [stderr]    |    ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `DA`
[INFO] [stderr]   --> src/bin/enums/main.rs:28:8
[INFO] [stderr]    |
[INFO] [stderr] 28 | struct DA {
[INFO] [stderr]    |        ^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `shoes_in_my_size`
[INFO] [stderr]   --> src/bin/closures/iterators.rs:61:4
[INFO] [stderr]    |
[INFO] [stderr] 61 | fn shoes_in_my_size(shoes: Vec<Shoe>, shoe_size: u32) -> Vec<Shoe> {
[INFO] [stderr]    |    ^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `new`
[INFO] [stderr]   --> src/bin/closures/iterators.rs:92:8
[INFO] [stderr]    |
[INFO] [stderr] 92 |     fn new() -> Counter {
[INFO] [stderr]    |        ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `simulated_expensive_calculation`
[INFO] [stderr]  --> src/bin/closures/main.rs:9:4
[INFO] [stderr]   |
[INFO] [stderr] 9 | fn simulated_expensive_calculation(intensity: u32) -> u32 {
[INFO] [stderr]   |    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary trailing semicolon
[INFO] [stderr]   --> src/bin/collections/main.rs:89:6
[INFO] [stderr]    |
[INFO] [stderr] 89 |     };
[INFO] [stderr]    |      ^ help: remove this semicolon
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(redundant_semicolons)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `v`
[INFO] [stderr]   --> src/bin/collections/main.rs:12:9
[INFO] [stderr]    |
[INFO] [stderr] 12 |     let v: Vec<u128> = Vec::new();
[INFO] [stderr]    |         ^ help: if this is intentional, prefix it with an underscore: `_v`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `s2` is never read
[INFO] [stderr]   --> src/bin/collections/main.rs:71:5
[INFO] [stderr]    |
[INFO] [stderr] 71 |     s2 = String::from("xxx");
[INFO] [stderr]    |     ^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stderr]    = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/bin/collections/main.rs:21:9
[INFO] [stderr]    |
[INFO] [stderr] 21 |     let mut v = vec![1, 2, 3, 4, 5];
[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/bin/collections/main.rs:82:9
[INFO] [stderr]    |
[INFO] [stderr] 82 |     let mut sss = SSS {
[INFO] [stderr]    |         ----^^^
[INFO] [stderr]    |         |
[INFO] [stderr]    |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `accessing`
[INFO] [stderr]   --> src/bin/collections/main.rs:11:4
[INFO] [stderr]    |
[INFO] [stderr] 11 | fn accessing() {
[INFO] [stderr]    |    ^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `no_mutable_and_imutable_in_same_scope`
[INFO] [stderr]   --> src/bin/collections/main.rs:20:4
[INFO] [stderr]    |
[INFO] [stderr] 20 | fn no_mutable_and_imutable_in_same_scope() {
[INFO] [stderr]    |    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `edit_in_place`
[INFO] [stderr]   --> src/bin/collections/main.rs:27:4
[INFO] [stderr]    |
[INFO] [stderr] 27 | fn edit_in_place() {
[INFO] [stderr]    |    ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `enum_vec`
[INFO] [stderr]   --> src/bin/collections/main.rs:35:4
[INFO] [stderr]    |
[INFO] [stderr] 35 | fn enum_vec() {
[INFO] [stderr]    |    ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `stringss`
[INFO] [stderr]   --> src/bin/collections/main.rs:60:4
[INFO] [stderr]    |
[INFO] [stderr] 60 | fn stringss() {
[INFO] [stderr]    |    ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `vec_of_stracts`
[INFO] [stderr]   --> src/bin/collections/main.rs:75:4
[INFO] [stderr]    |
[INFO] [stderr] 75 | fn vec_of_stracts() {
[INFO] [stderr]    |    ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `update_entry_in_a_map`
[INFO] [stderr]   --> src/bin/collections/main.rs:97:4
[INFO] [stderr]    |
[INFO] [stderr] 97 | fn update_entry_in_a_map() {
[INFO] [stderr]    |    ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: structure field `Id` should have a snake case name
[INFO] [stderr]   --> src/bin/collections/main.rs:78:9
[INFO] [stderr]    |
[INFO] [stderr] 78 |         Id: String,
[INFO] [stderr]    |         ^^ help: convert the identifier to snake case (notice the capitalization): `id`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(non_snake_case)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `guessing_game_viggin` (bin "closures" test) generated 4 warnings
[INFO] [stderr] warning: `guessing_game_viggin` (bin "hash") generated 2 warnings
[INFO] [stderr] warning: `guessing_game_viggin` (bin "tests") generated 1 warning
[INFO] [stderr] warning: `guessing_game_viggin` (bin "minigrep") generated 1 warning
[INFO] [stderr] warning: `guessing_game_viggin` (bin "errors" test) generated 4 warnings
[INFO] [stderr] warning: `guessing_game_viggin` (bin "guessing_game") generated 2 warnings
[INFO] [stderr] warning: `guessing_game_viggin` (bin "generics" test) generated 21 warnings
[INFO] [stderr] warning: `guessing_game_viggin` (bin "http_async") generated 2 warnings
[INFO] [stderr] warning: `guessing_game_viggin` (bin "generics") generated 21 warnings (21 duplicates)
[INFO] [stderr] warning: `guessing_game_viggin` (bin "enums") generated 1 warning
[INFO] [stderr] warning: `guessing_game_viggin` (bin "closures") generated 5 warnings (2 duplicates)
[INFO] [stderr] warning: `guessing_game_viggin` (bin "errors") generated 4 warnings (4 duplicates)
[INFO] [stderr] warning: `guessing_game_viggin` (bin "enums" test) generated 1 warning (1 duplicate)
[INFO] [stderr] warning: `guessing_game_viggin` (bin "collections") generated 13 warnings
[INFO] [stderr] warning: `guessing_game_viggin` (bin "http_async" test) generated 2 warnings (2 duplicates)
[INFO] [stderr] warning: `guessing_game_viggin` (bin "hash" test) generated 2 warnings (2 duplicates)
[INFO] [stderr] warning: `guessing_game_viggin` (bin "collections" test) generated 13 warnings (13 duplicates)
[INFO] [stderr] warning: `guessing_game_viggin` (bin "minigrep" test) generated 1 warning (1 duplicate)
[INFO] [stderr] warning: `guessing_game_viggin` (bin "guessing_game" test) generated 2 warnings (2 duplicates)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.27s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/mygrep-3c1a2bfd8cd7ecab)
[INFO] [stdout] 
[INFO] [stdout] running 3 tests
[INFO] [stdout] test add_two::tests::test_add ... ok
[INFO] [stdout] test search::tests::case_sensitive ... ok
[INFO] [stdout] test search::tests::case_insensitive ... FAILED
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- search::tests::case_insensitive stdout ----
[INFO] [stdout] thread 'search::tests::case_insensitive' panicked at 'assertion failed: `(left == right)`
[INFO] [stdout]   left: `["Rust:", "Trust me."]`,
[INFO] [stdout]  right: `[]`', src/lib/search.rs:40:9
[INFO] [stdout] stack backtrace:
[INFO] [stdout]    0:     0x55d6d2938390 - std::backtrace_rs::backtrace::libunwind::trace::hff4d1766e93f64f1
[INFO] [stdout]                                at /rustc/53fd98ca776cb875bc9e5514f56b52eb74f9e7a9/library/std/src/../../backtrace/src/backtrace/libunwind.rs:90:5
[INFO] [stdout]    1:     0x55d6d2938390 - std::backtrace_rs::backtrace::trace_unsynchronized::h56bbc8eb78770bcb
[INFO] [stdout]                                at /rustc/53fd98ca776cb875bc9e5514f56b52eb74f9e7a9/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
[INFO] [stdout]    2:     0x55d6d2938390 - std::sys_common::backtrace::_print_fmt::h5c8e75464faca780
[INFO] [stdout]                                at /rustc/53fd98ca776cb875bc9e5514f56b52eb74f9e7a9/library/std/src/sys_common/backtrace.rs:67:5
[INFO] [stdout]    3:     0x55d6d2938390 - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::h48b88277def8b362
[INFO] [stdout]                                at /rustc/53fd98ca776cb875bc9e5514f56b52eb74f9e7a9/library/std/src/sys_common/backtrace.rs:46:22
[INFO] [stdout]    4:     0x55d6d295b06c - core::fmt::write::h3381b3176fe2b3d3
[INFO] [stdout]                                at /rustc/53fd98ca776cb875bc9e5514f56b52eb74f9e7a9/library/core/src/fmt/mod.rs:1115:17
[INFO] [stdout]    5:     0x55d6d29352f5 - std::io::Write::write_fmt::h5f34a676f60246b5
[INFO] [stdout]                                at /rustc/53fd98ca776cb875bc9e5514f56b52eb74f9e7a9/library/std/src/io/mod.rs:1665:15
[INFO] [stdout]    6:     0x55d6d293a50b - std::sys_common::backtrace::_print::ha537687d6c17dd0d
[INFO] [stdout]                                at /rustc/53fd98ca776cb875bc9e5514f56b52eb74f9e7a9/library/std/src/sys_common/backtrace.rs:49:5
[INFO] [stdout]    7:     0x55d6d293a50b - std::sys_common::backtrace::print::h61376ae57d131d72
[INFO] [stdout]                                at /rustc/53fd98ca776cb875bc9e5514f56b52eb74f9e7a9/library/std/src/sys_common/backtrace.rs:36:9
[INFO] [stdout]    8:     0x55d6d293a50b - std::panicking::default_hook::{{closure}}::h0f7208c0b9644a54
[INFO] [stdout]                                at /rustc/53fd98ca776cb875bc9e5514f56b52eb74f9e7a9/library/std/src/panicking.rs:208:50
[INFO] [stdout]    9:     0x55d6d293a01c - std::panicking::default_hook::hdac7fc06578c14ce
[INFO] [stdout]                                at /rustc/53fd98ca776cb875bc9e5514f56b52eb74f9e7a9/library/std/src/panicking.rs:222:9
[INFO] [stdout]   10:     0x55d6d293abd4 - std::panicking::rust_panic_with_hook::h72b21c283da3d1ef
[INFO] [stdout]                                at /rustc/53fd98ca776cb875bc9e5514f56b52eb74f9e7a9/library/std/src/panicking.rs:622:17
[INFO] [stdout]   11:     0x55d6d293a6b7 - std::panicking::begin_panic_handler::{{closure}}::he5778f1729cff84a
[INFO] [stdout]                                at /rustc/53fd98ca776cb875bc9e5514f56b52eb74f9e7a9/library/std/src/panicking.rs:519:13
[INFO] [stdout]   12:     0x55d6d293886c - std::sys_common::backtrace::__rust_end_short_backtrace::h2d11ca8b453b4b1d
[INFO] [stdout]                                at /rustc/53fd98ca776cb875bc9e5514f56b52eb74f9e7a9/library/std/src/sys_common/backtrace.rs:141:18
[INFO] [stdout]   13:     0x55d6d293a619 - rust_begin_unwind
[INFO] [stdout]                                at /rustc/53fd98ca776cb875bc9e5514f56b52eb74f9e7a9/library/std/src/panicking.rs:515:5
[INFO] [stdout]   14:     0x55d6d28dd3b1 - core::panicking::panic_fmt::hf9de31d4acbce4db
[INFO] [stdout]                                at /rustc/53fd98ca776cb875bc9e5514f56b52eb74f9e7a9/library/core/src/panicking.rs:92:14
[INFO] [stdout]   15:     0x55d6d2959988 - core::panicking::assert_failed_inner::h62e8cb2847a6e7ec
[INFO] [stdout]   16:     0x55d6d28e99ca - core::panicking::assert_failed::h14277d6c3574ca09
[INFO] [stdout]                                at /rustc/53fd98ca776cb875bc9e5514f56b52eb74f9e7a9/library/core/src/panicking.rs:117:5
[INFO] [stdout]   17:     0x55d6d28e5ba7 - mygrep::search::tests::case_insensitive::h3eaccde4f2797ed9
[INFO] [stdout]                                at /opt/rustwide/workdir/src/lib/search.rs:40:9
[INFO] [stdout]   18:     0x55d6d28e5a1a - mygrep::search::tests::case_insensitive::{{closure}}::h6fb81e8325114696
[INFO] [stdout]                                at /opt/rustwide/workdir/src/lib/search.rs:32:5
[INFO] [stdout]   19:     0x55d6d28e4e7e - core::ops::function::FnOnce::call_once::h92e119761ecd2f50
[INFO] [stdout]                                at /rustc/53fd98ca776cb875bc9e5514f56b52eb74f9e7a9/library/core/src/ops/function.rs:227:5
[INFO] [stdout]   20:     0x55d6d291cc53 - core::ops::function::FnOnce::call_once::hbb52c4519d3137b0
[INFO] [stdout]                                at /rustc/53fd98ca776cb875bc9e5514f56b52eb74f9e7a9/library/core/src/ops/function.rs:227:5
[INFO] [stdout]   21:     0x55d6d291cc53 - test::__rust_begin_short_backtrace::h86fe3a2a5a5121af
[INFO] [stdout]                                at /rustc/53fd98ca776cb875bc9e5514f56b52eb74f9e7a9/library/test/src/lib.rs:578:5
[INFO] [stdout]   22:     0x55d6d291b708 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::hfd956bc3d57399be
[INFO] [stdout]                                at /rustc/53fd98ca776cb875bc9e5514f56b52eb74f9e7a9/library/alloc/src/boxed.rs:1572:9
[INFO] [stdout]   23:     0x55d6d291b708 - <std::panic::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h40dc93e0ddb5938a
[INFO] [stdout]                                at /rustc/53fd98ca776cb875bc9e5514f56b52eb74f9e7a9/library/std/src/panic.rs:347:9
[INFO] [stdout]   24:     0x55d6d291b708 - std::panicking::try::do_call::h90d07750cb47c562
[INFO] [stdout]                                at /rustc/53fd98ca776cb875bc9e5514f56b52eb74f9e7a9/library/std/src/panicking.rs:401:40
[INFO] [stdout]   25:     0x55d6d291b708 - std::panicking::try::h063c84733ad2a629
[INFO] [stdout]                                at /rustc/53fd98ca776cb875bc9e5514f56b52eb74f9e7a9/library/std/src/panicking.rs:365:19
[INFO] [stdout]   26:     0x55d6d291b708 - std::panic::catch_unwind::h0c464836a84e7c08
[INFO] [stdout]                                at /rustc/53fd98ca776cb875bc9e5514f56b52eb74f9e7a9/library/std/src/panic.rs:434:14
[INFO] [stdout]   27:     0x55d6d291b708 - test::run_test_in_process::h5cb06ef620b157fc
[INFO] [stdout]                                at /rustc/53fd98ca776cb875bc9e5514f56b52eb74f9e7a9/library/test/src/lib.rs:601:18
[INFO] [stdout]   28:     0x55d6d291b708 - test::run_test::run_test_inner::{{closure}}::h76f677f4b93f9828
[INFO] [stdout]                                at /rustc/53fd98ca776cb875bc9e5514f56b52eb74f9e7a9/library/test/src/lib.rs:493:39
[INFO] [stdout]   29:     0x55d6d28e9e9d - test::run_test::run_test_inner::{{closure}}::h366d01fe04f4d67a
[INFO] [stdout]                                at /rustc/53fd98ca776cb875bc9e5514f56b52eb74f9e7a9/library/test/src/lib.rs:520:37
[INFO] [stdout]   30:     0x55d6d28e9e9d - std::sys_common::backtrace::__rust_begin_short_backtrace::h7dfa0de4eb395af2
[INFO] [stdout]                                at /rustc/53fd98ca776cb875bc9e5514f56b52eb74f9e7a9/library/std/src/sys_common/backtrace.rs:125:18
[INFO] [stdout]   31:     0x55d6d28ee668 - std::thread::Builder::spawn_unchecked::{{closure}}::{{closure}}::hf0a74bb58798037f
[INFO] [stdout]                                at /rustc/53fd98ca776cb875bc9e5514f56b52eb74f9e7a9/library/std/src/thread/mod.rs:476:17
[INFO] [stdout]   32:     0x55d6d28ee668 - <std::panic::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::hb024e854818586ac
[INFO] [stdout]                                at /rustc/53fd98ca776cb875bc9e5514f56b52eb74f9e7a9/library/std/src/panic.rs:347:9
[INFO] [stdout]   33:     0x55d6d28ee668 - std::panicking::try::do_call::hb2dd9f1d0d48e41d
[INFO] [stdout]                                at /rustc/53fd98ca776cb875bc9e5514f56b52eb74f9e7a9/library/std/src/panicking.rs:401:40
[INFO] [stdout]   34:     0x55d6d28ee668 - std::panicking::try::h4717ae7bac8b2bf3
[INFO] [stdout]                                at /rustc/53fd98ca776cb875bc9e5514f56b52eb74f9e7a9/library/std/src/panicking.rs:365:19
[INFO] [stdout]   35:     0x55d6d28ee668 - std::panic::catch_unwind::h0dc8a061326ce8d8
[INFO] [stdout]                                at /rustc/53fd98ca776cb875bc9e5514f56b52eb74f9e7a9/library/std/src/panic.rs:434:14
[INFO] [stdout]   36:     0x55d6d28ee668 - std::thread::Builder::spawn_unchecked::{{closure}}::haa369e2d6fd00aa1
[INFO] [stdout]                                at /rustc/53fd98ca776cb875bc9e5514f56b52eb74f9e7a9/library/std/src/thread/mod.rs:475:30
[INFO] [stdout]   37:     0x55d6d28ee668 - core::ops::function::FnOnce::call_once{{vtable.shim}}::h36dcf3de8b056f17
[INFO] [stdout]                                at /rustc/53fd98ca776cb875bc9e5514f56b52eb74f9e7a9/library/core/src/ops/function.rs:227:5
[INFO] [stdout]   38:     0x55d6d293f747 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h65c29e4642be2358
[INFO] [stdout]                                at /rustc/53fd98ca776cb875bc9e5514f56b52eb74f9e7a9/library/alloc/src/boxed.rs:1572:9
[INFO] [stdout]   39:     0x55d6d293f747 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::hd0f8f7fbbd9fffbf
[INFO] [stdout]                                at /rustc/53fd98ca776cb875bc9e5514f56b52eb74f9e7a9/library/alloc/src/boxed.rs:1572:9
[INFO] [stdout]   40:     0x55d6d293f747 - std::sys::unix::thread::Thread::new::thread_start::h2fd22fee3ca77b65
[INFO] [stdout]                                at /rustc/53fd98ca776cb875bc9e5514f56b52eb74f9e7a9/library/std/src/sys/unix/thread.rs:74:17
[INFO] [stdout]   41:     0x7f0806704609 - start_thread
[INFO] [stdout]   42:     0x7f08064d6293 - clone
[INFO] [stdout]   43:                0x0 - <unknown>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout]     search::tests::case_insensitive
[INFO] [stdout] 
[INFO] [stdout] test result: FAILED. 2 passed; 1 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.02s
[INFO] [stdout] 
[INFO] [stderr] error: test failed, to rerun pass '--lib'
[INFO] running `Command { std: "docker" "inspect" "dec9186543597a6f97c6b506038f0c66cf88cb92306d0317c1d886d33a2f3b97", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dec9186543597a6f97c6b506038f0c66cf88cb92306d0317c1d886d33a2f3b97", kill_on_drop: false }`
[INFO] [stdout] dec9186543597a6f97c6b506038f0c66cf88cb92306d0317c1d886d33a2f3b97
