[INFO] fetching crate guessing_game_viggin 0.1.0...
[INFO] checking guessing_game_viggin-0.1.0 against try#8e3afc79c11f48cb3acd1be5b3b7de98fe3f93a8 for pr-82565
[INFO] extracting crate guessing_game_viggin 0.1.0 into /workspace/builds/worker-5/source
[INFO] validating manifest of crates.io crate guessing_game_viggin 0.1.0 on toolchain 8e3afc79c11f48cb3acd1be5b3b7de98fe3f93a8
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8e3afc79c11f48cb3acd1be5b3b7de98fe3f93a8" "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-5/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" "+8e3afc79c11f48cb3acd1be5b3b7de98fe3f93a8" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded futures-sink v0.3.4
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+8e3afc79c11f48cb3acd1be5b3b7de98fe3f93a8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 39f371d3176b8f45d58a1410eaec5cc5b0a3743dfdb16e4dd0cfc55dfabe0bd9
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "39f371d3176b8f45d58a1410eaec5cc5b0a3743dfdb16e4dd0cfc55dfabe0bd9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "39f371d3176b8f45d58a1410eaec5cc5b0a3743dfdb16e4dd0cfc55dfabe0bd9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "39f371d3176b8f45d58a1410eaec5cc5b0a3743dfdb16e4dd0cfc55dfabe0bd9", kill_on_drop: false }`
[INFO] [stdout] 39f371d3176b8f45d58a1410eaec5cc5b0a3743dfdb16e4dd0cfc55dfabe0bd9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-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" "rustops/crates-build-env@sha256:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+8e3afc79c11f48cb3acd1be5b3b7de98fe3f93a8" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c60059a11c951477e18457593e6c50d83c0841787603723ea7444f77d8f256ba
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "c60059a11c951477e18457593e6c50d83c0841787603723ea7444f77d8f256ba", kill_on_drop: false }`
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[INFO] [stderr]     Checking guessing_game_viggin v0.1.0 (/opt/rustwide/workdir)
[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 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 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: 4 warnings emitted
[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: 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: 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: 2 warnings emitted
[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: 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 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: `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: 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: 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: 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: `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: 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 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: 2 warnings emitted
[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: 1 warning emitted
[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: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 21 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings 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: 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: 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: 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: 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: 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: 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: 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: 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: 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: 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: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[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: 4 warnings 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: 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: 13 warnings emitted
[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: 4 warnings emitted
[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: 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: 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: 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: 13 warnings emitted
[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] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 46.78s
[INFO] running `Command { std: "docker" "inspect" "c60059a11c951477e18457593e6c50d83c0841787603723ea7444f77d8f256ba", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c60059a11c951477e18457593e6c50d83c0841787603723ea7444f77d8f256ba", kill_on_drop: false }`
[INFO] [stdout] c60059a11c951477e18457593e6c50d83c0841787603723ea7444f77d8f256ba