[INFO] cloning repository https://github.com/albertisaac12/Learn-Rust-4 [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/albertisaac12/Learn-Rust-4" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Falbertisaac12%2FLearn-Rust-4", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Falbertisaac12%2FLearn-Rust-4'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 78d130f8d9451f21667baa42fa1bd1a6698fae48 [INFO] checking albertisaac12/Learn-Rust-4 against try#e784c10fc2dd34bf2bb7b1e51117e35d3f9c5837 for pr-143619 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Falbertisaac12%2FLearn-Rust-4" "/workspace/builds/worker-7-tc2/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc2/source'... [INFO] [stderr] done. [INFO] [stderr] error: unable to write file main [INFO] [stderr] fatal: cannot create directory at 'src': No space left on device [INFO] [stderr] warning: Clone succeeded, but checkout failed. [INFO] [stderr] You can inspect what was checked out with 'git status' [INFO] [stderr] and retry with 'git restore --source=HEAD :/' [INFO] [stderr] [INFO] checking albertisaac12/Learn-Rust-4 against try#e784c10fc2dd34bf2bb7b1e51117e35d3f9c5837 for pr-143619 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Falbertisaac12%2FLearn-Rust-4" "/workspace/builds/worker-7-tc2/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc2/source'... [INFO] [stderr] done. [INFO] started tweaking git repo https://github.com/albertisaac12/Learn-Rust-4 [INFO] finished tweaking git repo https://github.com/albertisaac12/Learn-Rust-4 [INFO] tweaked toml for git repo https://github.com/albertisaac12/Learn-Rust-4 written to /workspace/builds/worker-7-tc2/source/Cargo.toml [INFO] validating manifest of git repo https://github.com/albertisaac12/Learn-Rust-4 on toolchain e784c10fc2dd34bf2bb7b1e51117e35d3f9c5837 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+e784c10fc2dd34bf2bb7b1e51117e35d3f9c5837" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] crate git repo https://github.com/albertisaac12/Learn-Rust-4 already has a lockfile, it will not be regenerated [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+e784c10fc2dd34bf2bb7b1e51117e35d3f9c5837" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:e8955075918b6d00525c617f7c34ee2595c70db70b3cf844dc875e4d3604499b" "/opt/rustwide/cargo-home/bin/cargo" "+e784c10fc2dd34bf2bb7b1e51117e35d3f9c5837" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] d84cd43ee591feec72863dda2fcc6b67b45c4aab777860949b8eef214d6fd81e [INFO] running `Command { std: "docker" "start" "-a" "d84cd43ee591feec72863dda2fcc6b67b45c4aab777860949b8eef214d6fd81e", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "d84cd43ee591feec72863dda2fcc6b67b45c4aab777860949b8eef214d6fd81e", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "d84cd43ee591feec72863dda2fcc6b67b45c4aab777860949b8eef214d6fd81e", kill_on_drop: false }` [INFO] [stdout] d84cd43ee591feec72863dda2fcc6b67b45c4aab777860949b8eef214d6fd81e [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/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" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:e8955075918b6d00525c617f7c34ee2595c70db70b3cf844dc875e4d3604499b" "/opt/rustwide/cargo-home/bin/cargo" "+e784c10fc2dd34bf2bb7b1e51117e35d3f9c5837" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 72f7657b864cdef47694b331a1b64370ef1cacdda7efb77e9418ee80fb25878f [INFO] running `Command { std: "docker" "start" "-a" "72f7657b864cdef47694b331a1b64370ef1cacdda7efb77e9418ee80fb25878f", kill_on_drop: false }` [INFO] [stderr] Checking rust-4 v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused import: `File` [INFO] [stdout] --> src/errorHandling.rs:1:21 [INFO] [stdout] | [INFO] [stdout] 1 | use std::fs::{self, File}; [INFO] [stdout] | ^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `Read` [INFO] [stdout] --> src/errorHandling.rs:2:21 [INFO] [stdout] | [INFO] [stdout] 2 | use std::io::{stdin,Read,self}; [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `std::process` [INFO] [stdout] --> src/errorHandling.rs:3:5 [INFO] [stdout] | [INFO] [stdout] 3 | use std::process; [INFO] [stdout] | ^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `std::iter::Rev` [INFO] [stdout] --> src/recursion.rs:1:5 [INFO] [stdout] | [INFO] [stdout] 1 | use std::iter::Rev; [INFO] [stdout] | ^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: type `unit_struct` should have an upper camel case name [INFO] [stdout] --> src/structsAndImpl.rs:12:8 [INFO] [stdout] | [INFO] [stdout] 12 | struct unit_struct; // unit struct is used when one wants to implement a trait on some type but don't want any data. [INFO] [stdout] | ^^^^^^^^^^^ help: convert the identifier to upper camel case: `UnitStruct` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(non_camel_case_types)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: type `rectangle` should have an upper camel case name [INFO] [stdout] --> src/structsAndImpl.rs:14:8 [INFO] [stdout] | [INFO] [stdout] 14 | struct rectangle { [INFO] [stdout] | ^^^^^^^^^ help: convert the identifier to upper camel case: `Rectangle` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `sum` [INFO] [stdout] --> src/recursion.rs:5:9 [INFO] [stdout] | [INFO] [stdout] 5 | let sum = rec(5); [INFO] [stdout] | ^^^ help: if this is intentional, prefix it with an underscore: `_sum` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `f` [INFO] [stdout] --> src/GenericIntro.rs:7:9 [INFO] [stdout] | [INFO] [stdout] 7 | let f: std::ops::RangeInclusive = 'a'..='z'; [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_f` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `mc` [INFO] [stdout] --> src/GenericIntro.rs:9:9 [INFO] [stdout] | [INFO] [stdout] 9 | let mc = { 2 + 2 }; [INFO] [stdout] | ^^ help: if this is intentional, prefix it with an underscore: `_mc` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `mc` [INFO] [stdout] --> src/GenericIntro.rs:15:13 [INFO] [stdout] | [INFO] [stdout] 15 | let mc = if i.1 == &b'a' { [INFO] [stdout] | ^^ help: if this is intentional, prefix it with an underscore: `_mc` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `format` [INFO] [stdout] --> src/ttraits.rs:2:16 [INFO] [stdout] | [INFO] [stdout] 2 | use std::fmt::{format, Display}; [INFO] [stdout] | ^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: type `mc` should have an upper camel case name [INFO] [stdout] --> src/ttraits.rs:135:8 [INFO] [stdout] | [INFO] [stdout] 135 | struct mc /*mc */ { // Any type T that implements Accommodation [INFO] [stdout] | ^^ help: convert the identifier to upper camel case: `Mc` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(non_camel_case_types)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `vec1` [INFO] [stdout] --> src/vec.rs:6:9 [INFO] [stdout] | [INFO] [stdout] 6 | let vec1 = vec![0,1,2,3,4]; [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_vec1` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `k` [INFO] [stdout] --> src/vec.rs:10:9 [INFO] [stdout] | [INFO] [stdout] 10 | let k = vec.remove(0); [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_k` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `checkString` is never used [INFO] [stdout] --> src/GenericIntro.rs:13:4 [INFO] [stdout] | [INFO] [stdout] 13 | fn checkString(abc: &str) -> (bool, bool) { [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `m3` [INFO] [stdout] --> src/exercise5.rs:60:9 [INFO] [stdout] | [INFO] [stdout] 60 | let m3 = ChatMessage { [INFO] [stdout] | ^^ help: if this is intentional, prefix it with an underscore: `_m3` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `checkString` should have a snake case name [INFO] [stdout] --> src/GenericIntro.rs:13:4 [INFO] [stdout] | [INFO] [stdout] 13 | fn checkString(abc: &str) -> (bool, bool) { [INFO] [stdout] | ^^^^^^^^^^^ help: convert the identifier to snake case: `check_string` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(non_snake_case)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `a` [INFO] [stdout] --> src/lifetimeGeneric.rs:39:12 [INFO] [stdout] | [INFO] [stdout] 39 | fn blah(a:T) { [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_a` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `format` [INFO] [stdout] --> src/traitObjects.rs:2:39 [INFO] [stdout] | [INFO] [stdout] 2 | use std::{collections::HashMap, fmt::{format, Display}}; [INFO] [stdout] | ^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `blah` is never used [INFO] [stdout] --> src/lifetimeGeneric.rs:39:4 [INFO] [stdout] | [INFO] [stdout] 39 | fn blah(a:T) { [INFO] [stdout] | ^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `std::ops::Add` [INFO] [stdout] --> src/traitObjects.rs:4:5 [INFO] [stdout] | [INFO] [stdout] 4 | use std::ops::Add; [INFO] [stdout] | ^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variant `VideoFile` is never constructed [INFO] [stdout] --> src/exercise5.rs:42:5 [INFO] [stdout] | [INFO] [stdout] 40 | enum DigitalContent { [INFO] [stdout] | -------------- variant in this enum [INFO] [stdout] 41 | AudioFile, [INFO] [stdout] 42 | VideoFile [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `DigitalContent` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `user2` [INFO] [stdout] --> src/structsAndImpl.rs:27:9 [INFO] [stdout] | [INFO] [stdout] 27 | let user2 = User { [INFO] [stdout] | ^^^^^ help: if this is intentional, prefix it with an underscore: `_user2` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `p1` [INFO] [stdout] --> src/structsAndImpl.rs:40:9 [INFO] [stdout] | [INFO] [stdout] 40 | let p1 = Point(1, 1, 1); [INFO] [stdout] | ^^ help: if this is intentional, prefix it with an underscore: `_p1` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `r2` [INFO] [stdout] --> src/structsAndImpl.rs:56:9 [INFO] [stdout] | [INFO] [stdout] 56 | let r2 = rectangle::square(5); [INFO] [stdout] | ^^ help: if this is intentional, prefix it with an underscore: `_r2` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `bc` [INFO] [stdout] --> src/arrayTupleOwnership.rs:3:9 [INFO] [stdout] | [INFO] [stdout] 3 | let bc = arr[1]; [INFO] [stdout] | ^^ help: if this is intentional, prefix it with an underscore: `_bc` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `a1` [INFO] [stdout] --> src/arrayTupleOwnership.rs:19:9 [INFO] [stdout] | [INFO] [stdout] 19 | let a1 = arr[0].clone(); [INFO] [stdout] | ^^ help: if this is intentional, prefix it with an underscore: `_a1` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `mc` [INFO] [stdout] --> src/arrayTupleOwnership.rs:35:9 [INFO] [stdout] | [INFO] [stdout] 35 | let mc = abc.2.clone(); // method 1 [INFO] [stdout] | ^^ help: if this is intentional, prefix it with an underscore: `_mc` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `username` is never read [INFO] [stdout] --> src/structsAndImpl.rs:5:5 [INFO] [stdout] | [INFO] [stdout] 3 | struct User { [INFO] [stdout] | ---- field in this struct [INFO] [stdout] 4 | active: bool, [INFO] [stdout] 5 | username: String, [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `User` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `mc` [INFO] [stdout] --> src/arrayTupleOwnership.rs:36:9 [INFO] [stdout] | [INFO] [stdout] 36 | let mc = &abc.2; // method 2 [INFO] [stdout] | ^^ help: if this is intentional, prefix it with an underscore: `_mc` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: fields `0`, `1`, and `2` are never read [INFO] [stdout] --> src/structsAndImpl.rs:10:14 [INFO] [stdout] | [INFO] [stdout] 10 | struct Point(i32, i32, i32); // Tuple Structs are use full when one wants to give an entire tuple a name [INFO] [stdout] | ----- ^^^ ^^^ ^^^ [INFO] [stdout] | | [INFO] [stdout] | fields in this struct [INFO] [stdout] | [INFO] [stdout] = help: consider removing these fields [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct `unit_struct` is never constructed [INFO] [stdout] --> src/structsAndImpl.rs:12:8 [INFO] [stdout] | [INFO] [stdout] 12 | struct unit_struct; // unit struct is used when one wants to implement a trait on some type but don't want any data. [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `buildUser` should have a snake case name [INFO] [stdout] --> src/structsAndImpl.rs:59:4 [INFO] [stdout] | [INFO] [stdout] 59 | fn buildUser(email: String, username: String) -> User { [INFO] [stdout] | ^^^^^^^^^ help: convert the identifier to snake case: `build_user` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(non_snake_case)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `a` [INFO] [stdout] --> src/lifetime.rs:4:9 [INFO] [stdout] | [INFO] [stdout] 4 | let a = 1; [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_a` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `b` [INFO] [stdout] --> src/lifetime.rs:7:13 [INFO] [stdout] | [INFO] [stdout] 7 | let b = 2; // life time of this scope [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_b` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `my_pet` [INFO] [stdout] --> src/lifetime.rs:19:9 [INFO] [stdout] | [INFO] [stdout] 19 | let my_pet = &dog; [INFO] [stdout] | ^^^^^^ help: if this is intentional, prefix it with an underscore: `_my_pet` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `fav` [INFO] [stdout] --> src/lifetime.rs:55:9 [INFO] [stdout] | [INFO] [stdout] 55 | let fav = &cities[0..2]; // lifetime begins and end here [INFO] [stdout] | ^^^ help: if this is intentional, prefix it with an underscore: `_fav` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `same_cities` [INFO] [stdout] --> src/lifetime.rs:56:9 [INFO] [stdout] | [INFO] [stdout] 56 | let same_cities = cities; [INFO] [stdout] | ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_same_cities` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `name` is never read [INFO] [stdout] --> src/exercise7.rs:51:5 [INFO] [stdout] | [INFO] [stdout] 50 | struct File { [INFO] [stdout] | ---- field in this struct [INFO] [stdout] 51 | name: String [INFO] [stdout] | ^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `File` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `name` is never read [INFO] [stdout] --> src/exercise7.rs:56:5 [INFO] [stdout] | [INFO] [stdout] 55 | struct Folder { [INFO] [stdout] | ------ field in this struct [INFO] [stdout] 56 | name: String, [INFO] [stdout] | ^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `Folder` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `std::iter::Rev` [INFO] [stdout] --> src/recursion.rs:1:5 [INFO] [stdout] | [INFO] [stdout] 1 | use std::iter::Rev; [INFO] [stdout] | ^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `sum` [INFO] [stdout] --> src/recursion.rs:5:9 [INFO] [stdout] | [INFO] [stdout] 5 | let sum = rec(5); [INFO] [stdout] | ^^^ help: if this is intentional, prefix it with an underscore: `_sum` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait `Accommodation` is never used [INFO] [stdout] --> src/traitObjects.rs:6:7 [INFO] [stdout] | [INFO] [stdout] 6 | trait Accommodation { [INFO] [stdout] | ^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `reservations` is never read [INFO] [stdout] --> src/traitObjects.rs:28:5 [INFO] [stdout] | [INFO] [stdout] 26 | struct Hotel { [INFO] [stdout] | ----- field in this struct [INFO] [stdout] 27 | name: T, [INFO] [stdout] 28 | reservations: HashMap [INFO] [stdout] | ^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `Hotel` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `guests` is never read [INFO] [stdout] --> src/traitObjects.rs:55:5 [INFO] [stdout] | [INFO] [stdout] 53 | struct AirBnB { [INFO] [stdout] | ------ field in this struct [INFO] [stdout] 54 | host: String, [INFO] [stdout] 55 | guests: Vec<(String,u32)> [INFO] [stdout] | ^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `AirBnB` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `first` [INFO] [stdout] --> src/ttraits.rs:90:14 [INFO] [stdout] | [INFO] [stdout] 90 | fn nxx (first: &mut T,second: &mut U) where T: Accommodation, U: Accommodation { [INFO] [stdout] | ^^^^^ help: if this is intentional, prefix it with an underscore: `_first` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `second` [INFO] [stdout] --> src/ttraits.rs:90:28 [INFO] [stdout] | [INFO] [stdout] 90 | fn nxx (first: &mut T,second: &mut U) where T: Accommodation, U: Accommodation { [INFO] [stdout] | ^^^^^^ help: if this is intentional, prefix it with an underscore: `_second` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `book_for_one_night_trait_bound` is never used [INFO] [stdout] --> src/ttraits.rs:70:4 [INFO] [stdout] | [INFO] [stdout] 70 | fn book_for_one_night_trait_bound (entity: &mut T) { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `mix_and_match` is never used [INFO] [stdout] --> src/ttraits.rs:75:4 [INFO] [stdout] | [INFO] [stdout] 75 | fn mix_and_match(first: &mut impl Accommodation, second: &mut impl Accommodation,guest: &str) { // here first and second can be any types... [INFO] [stdout] | ^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `mix_and_match_2` is never used [INFO] [stdout] --> src/ttraits.rs:80:4 [INFO] [stdout] | [INFO] [stdout] 80 | fn mix_and_match_2(first: &mut T, second: &mut T,guest: &str) { // here both first and second are of both type T [INFO] [stdout] | ^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `mix_and_match_2_fix` is never used [INFO] [stdout] --> src/ttraits.rs:85:4 [INFO] [stdout] | [INFO] [stdout] 85 | fn mix_and_match_2_fix(first: &mut T, second: &mut U,guest: &str) { // here both first and second are ... [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `nxx` is never used [INFO] [stdout] --> src/ttraits.rs:90:4 [INFO] [stdout] | [INFO] [stdout] 90 | fn nxx (first: &mut T,second: &mut U) where T: Accommodation, U: Accommodation { [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `traits_as_return_types` is never used [INFO] [stdout] --> src/ttraits.rs:94:4 [INFO] [stdout] | [INFO] [stdout] 94 | fn traits_as_return_types() -> impl Accommodation { // Any type that implements Accommodation can be returned [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct `mc` is never constructed [INFO] [stdout] --> src/ttraits.rs:135:8 [INFO] [stdout] | [INFO] [stdout] 135 | struct mc /*mc */ { // Any type T that implements Accommodation [INFO] [stdout] | ^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: method `summarize` is never used [INFO] [stdout] --> src/ttraits.rs:141:8 [INFO] [stdout] | [INFO] [stdout] 140 | impl mc { [INFO] [stdout] | ---------------------- method in this implementation [INFO] [stdout] 141 | fn summarize(&self) -> String { [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function `new` is never used [INFO] [stdout] --> src/ttraits.rs:147:6 [INFO] [stdout] | [INFO] [stdout] 146 | impl mc { [INFO] [stdout] | -------------- associated function in this implementation [INFO] [stdout] 147 | fn new(name:T) -> Self { [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `vec1` [INFO] [stdout] --> src/vec.rs:6:9 [INFO] [stdout] | [INFO] [stdout] 6 | let vec1 = vec![0,1,2,3,4]; [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_vec1` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `k` [INFO] [stdout] --> src/vec.rs:10:9 [INFO] [stdout] | [INFO] [stdout] 10 | let k = vec.remove(0); [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_k` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `val` [INFO] [stdout] --> src/hashMaap.rs:23:9 [INFO] [stdout] | [INFO] [stdout] 23 | let val = hp[&1]; [INFO] [stdout] | ^^^ help: if this is intentional, prefix it with an underscore: `_val` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `val` [INFO] [stdout] --> src/hashMaap.rs:25:9 [INFO] [stdout] | [INFO] [stdout] 25 | let val = coffee_pairing.get(&drink).copied().unwrap_or(&"Unknown Milk".to_string()); [INFO] [stdout] | ^^^ help: if this is intentional, prefix it with an underscore: `_val` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `ee` [INFO] [stdout] --> src/hashMaap.rs:27:9 [INFO] [stdout] | [INFO] [stdout] 27 | let ee = hp.entry(4).or_insert(5); [INFO] [stdout] | ^^ help: if this is intentional, prefix it with an underscore: `_ee` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `f` [INFO] [stdout] --> src/GenericIntro.rs:7:9 [INFO] [stdout] | [INFO] [stdout] 7 | let f: std::ops::RangeInclusive = 'a'..='z'; [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_f` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `mc` [INFO] [stdout] --> src/GenericIntro.rs:9:9 [INFO] [stdout] | [INFO] [stdout] 9 | let mc = { 2 + 2 }; [INFO] [stdout] | ^^ help: if this is intentional, prefix it with an underscore: `_mc` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `mc` [INFO] [stdout] --> src/GenericIntro.rs:15:13 [INFO] [stdout] | [INFO] [stdout] 15 | let mc = if i.1 == &b'a' { [INFO] [stdout] | ^^ help: if this is intentional, prefix it with an underscore: `_mc` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `checkString` is never used [INFO] [stdout] --> src/GenericIntro.rs:13:4 [INFO] [stdout] | [INFO] [stdout] 13 | fn checkString(abc: &str) -> (bool, bool) { [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `checkString` should have a snake case name [INFO] [stdout] --> src/GenericIntro.rs:13:4 [INFO] [stdout] | [INFO] [stdout] 13 | fn checkString(abc: &str) -> (bool, bool) { [INFO] [stdout] | ^^^^^^^^^^^ help: convert the identifier to snake case: `check_string` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(non_snake_case)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `format` [INFO] [stdout] --> src/traits2.rs:2:39 [INFO] [stdout] | [INFO] [stdout] 2 | use std::{collections::HashMap, fmt::{format, Display}}; [INFO] [stdout] | ^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: type `bc` should have an upper camel case name [INFO] [stdout] --> src/exercise3.rs:44:8 [INFO] [stdout] | [INFO] [stdout] 44 | struct bc; [INFO] [stdout] | ^^ help: convert the identifier to upper camel case: `Bc` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(non_camel_case_types)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: type `mc` should have an upper camel case name [INFO] [stdout] --> src/exercise3.rs:45:8 [INFO] [stdout] | [INFO] [stdout] 45 | struct mc(u32, u32); [INFO] [stdout] | ^^ help: convert the identifier to upper camel case: `Mc` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: type `test1` should have an upper camel case name [INFO] [stdout] --> src/if-let-let-else.rs:3:6 [INFO] [stdout] | [INFO] [stdout] 3 | enum test1 { [INFO] [stdout] | ^^^^^ help: convert the identifier to upper camel case: `Test1` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(non_camel_case_types)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variant `a` should have an upper camel case name [INFO] [stdout] --> src/if-let-let-else.rs:4:5 [INFO] [stdout] | [INFO] [stdout] 4 | a, [INFO] [stdout] | ^ help: convert the identifier to upper camel case: `A` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variant `b` should have an upper camel case name [INFO] [stdout] --> src/if-let-let-else.rs:5:5 [INFO] [stdout] | [INFO] [stdout] 5 | b, [INFO] [stdout] | ^ help: convert the identifier to upper camel case: `B` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variant `c` should have an upper camel case name [INFO] [stdout] --> src/if-let-let-else.rs:6:5 [INFO] [stdout] | [INFO] [stdout] 6 | c(String), [INFO] [stdout] | ^ help: convert the identifier to upper camel case (notice the capitalization): `C` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variant `d` should have an upper camel case name [INFO] [stdout] --> src/if-let-let-else.rs:7:5 [INFO] [stdout] | [INFO] [stdout] 7 | d{ kind: String}, [INFO] [stdout] | ^ help: convert the identifier to upper camel case: `D` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/slices.rs:6:9 [INFO] [stdout] | [INFO] [stdout] 6 | let mut myslice = &mut my_array[2..4]; [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 `arrSlice` should have a snake case name [INFO] [stdout] --> src/iterationOverBytes.rs:39:9 [INFO] [stdout] | [INFO] [stdout] 39 | let arrSlice = &arr[1..]; [INFO] [stdout] | ^^^^^^^^ help: convert the identifier to snake case: `arr_slice` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(non_snake_case)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable `arrSlice` should have a snake case name [INFO] [stdout] --> src/iterationOverBytes.rs:39:9 [INFO] [stdout] | [INFO] [stdout] 39 | let arrSlice = &arr[1..]; [INFO] [stdout] | ^^^^^^^^ help: convert the identifier to snake case: `arr_slice` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(non_snake_case)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: type `mcbc` should have an upper camel case name [INFO] [stdout] --> src/enums.rs:10:8 [INFO] [stdout] | [INFO] [stdout] 10 | struct mcbc { [INFO] [stdout] | ^^^^ help: convert the identifier to upper camel case: `Mcbc` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(non_camel_case_types)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `name` is never read [INFO] [stdout] --> src/exercise7.rs:51:5 [INFO] [stdout] | [INFO] [stdout] 50 | struct File { [INFO] [stdout] | ---- field in this struct [INFO] [stdout] 51 | name: String [INFO] [stdout] | ^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `File` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `name` is never read [INFO] [stdout] --> src/exercise7.rs:56:5 [INFO] [stdout] | [INFO] [stdout] 55 | struct Folder { [INFO] [stdout] | ------ field in this struct [INFO] [stdout] 56 | name: String, [INFO] [stdout] | ^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `Folder` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `hotel` [INFO] [stdout] --> src/traits2.rs:91:9 [INFO] [stdout] | [INFO] [stdout] 91 | let hotel = Hotel::new(String::from("The Luxe")); [INFO] [stdout] | ^^^^^ help: if this is intentional, prefix it with an underscore: `_hotel` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `airbnb` [INFO] [stdout] --> src/traits2.rs:92:9 [INFO] [stdout] | [INFO] [stdout] 92 | let airbnb = AirBnB::new("Peter"); [INFO] [stdout] | ^^^^^^ help: if this is intentional, prefix it with an underscore: `_airbnb` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variant `d` is never constructed [INFO] [stdout] --> src/if-let-let-else.rs:7:5 [INFO] [stdout] | [INFO] [stdout] 3 | enum test1 { [INFO] [stdout] | ----- variant in this enum [INFO] [stdout] ... [INFO] [stdout] 7 | d{ kind: String}, [INFO] [stdout] | ^ [INFO] [stdout] | [INFO] [stdout] = note: `test1` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `passengers` is never read [INFO] [stdout] --> src/exercise3.rs:41:5 [INFO] [stdout] | [INFO] [stdout] 37 | struct Flight { [INFO] [stdout] | ------ field in this struct [INFO] [stdout] ... [INFO] [stdout] 41 | passengers: u32, [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `Flight` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct `bc` is never constructed [INFO] [stdout] --> src/exercise3.rs:44:8 [INFO] [stdout] | [INFO] [stdout] 44 | struct bc; [INFO] [stdout] | ^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct `mc` is never constructed [INFO] [stdout] --> src/exercise3.rs:45:8 [INFO] [stdout] | [INFO] [stdout] 45 | struct mc(u32, u32); [INFO] [stdout] | ^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait `Accommodation` is never used [INFO] [stdout] --> src/traits2.rs:4:7 [INFO] [stdout] | [INFO] [stdout] 4 | trait Accommodation { [INFO] [stdout] | ^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `reservations` is never read [INFO] [stdout] --> src/traits2.rs:27:5 [INFO] [stdout] | [INFO] [stdout] 25 | struct Hotel { [INFO] [stdout] | ----- field in this struct [INFO] [stdout] 26 | name: T, [INFO] [stdout] 27 | reservations: HashMap [INFO] [stdout] | ^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `Hotel` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `guests` is never read [INFO] [stdout] --> src/traits2.rs:51:5 [INFO] [stdout] | [INFO] [stdout] 49 | struct AirBnB { [INFO] [stdout] | ------ field in this struct [INFO] [stdout] 50 | host: String, [INFO] [stdout] 51 | guests: Vec<(String,u32)> [INFO] [stdout] | ^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `AirBnB` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `mix_and_match` is never used [INFO] [stdout] --> src/traits2.rs:75:4 [INFO] [stdout] | [INFO] [stdout] 75 | fn mix_and_match(first: &mut T, second: &mut U,guest: &str) { // here both first and second are of bot... [INFO] [stdout] | ^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `hotel3` [INFO] [stdout] --> src/traitsContd.rs:143:13 [INFO] [stdout] | [INFO] [stdout] 143 | let mut hotel3 = choose_best_place_to_stay(); // observe this the type is impl Accommodation + Description and Hotel type [INFO] [stdout] | ^^^^^^ help: if this is intentional, prefix it with an underscore: `_hotel3` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `h3` [INFO] [stdout] --> src/traitsContd.rs:148:9 [INFO] [stdout] | [INFO] [stdout] 148 | let h3 = Hotel::new( vec![1,2,3]); [INFO] [stdout] | ^^ help: if this is intentional, prefix it with an underscore: `_h3` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `mc` [INFO] [stdout] --> src/enums.rs:40:9 [INFO] [stdout] | [INFO] [stdout] 40 | let mc = CardSuit::Clubs; [INFO] [stdout] | ^^ help: if this is intentional, prefix it with an underscore: `_mc` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `val` [INFO] [stdout] --> src/hashMaap.rs:23:9 [INFO] [stdout] | [INFO] [stdout] 23 | let val = hp[&1]; [INFO] [stdout] | ^^^ help: if this is intentional, prefix it with an underscore: `_val` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/traitsContd.rs:143:9 [INFO] [stdout] | [INFO] [stdout] 143 | let mut hotel3 = choose_best_place_to_stay(); // observe this the type is impl Accommodation + Description and Hotel type [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: `val` [INFO] [stdout] --> src/hashMaap.rs:25:9 [INFO] [stdout] | [INFO] [stdout] 25 | let val = coffee_pairing.get(&drink).copied().unwrap_or(&"Unknown Milk".to_string()); [INFO] [stdout] | ^^^ help: if this is intentional, prefix it with an underscore: `_val` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `ee` [INFO] [stdout] --> src/hashMaap.rs:27:9 [INFO] [stdout] | [INFO] [stdout] 27 | let ee = hp.entry(4).or_insert(5); [INFO] [stdout] | ^^ help: if this is intentional, prefix it with an underscore: `_ee` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `mc` [INFO] [stdout] --> src/enums.rs:43:9 [INFO] [stdout] | [INFO] [stdout] 43 | let mc = mcbc { [INFO] [stdout] | ^^ help: if this is intentional, prefix it with an underscore: `_mc` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `mix_and_match_with_generics` is never used [INFO] [stdout] --> src/traitsContd.rs:85:4 [INFO] [stdout] | [INFO] [stdout] 85 | fn mix_and_match_with_generics (first: &mut T, second: &mut T, guest: &str) { // here both the types T are the same mea... [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `mix_and_match_with_generics_fix_with_multiple_trait_bounds` is never used [INFO] [stdout] --> src/traitsContd.rs:95:4 [INFO] [stdout] | [INFO] [stdout] 95 | fn mix_and_match_with_generics_fix_with_multiple_trait_bounds (first: &mut T, second: &... [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `mix_and_match_with_generics_fix_with_multiple_trait_bounds_with_where` is never used [INFO] [stdout] --> src/traitsContd.rs:100:4 [INFO] [stdout] | [INFO] [stdout] 100 | fn mix_and_match_with_generics_fix_with_multiple_trait_bounds_with_where (first: &mut T, second: &mut U, guest: &str) where T: Acc... [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable `airBnB` should have a snake case name [INFO] [stdout] --> src/traitsContd.rs:127:13 [INFO] [stdout] | [INFO] [stdout] 127 | let mut airBnB = AirBnB::new("Peter"); [INFO] [stdout] | ^^^^^^ help: convert the identifier to snake case: `air_bn_b` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(non_snake_case)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable `airBnB2` should have a snake case name [INFO] [stdout] --> src/traitsContd.rs:135:13 [INFO] [stdout] | [INFO] [stdout] 135 | let mut airBnB2 = AirBnB::new("Peter"); [INFO] [stdout] | ^^^^^^^ help: convert the identifier to snake case: `air_bn_b2` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `visa` [INFO] [stdout] --> src/enums.rs:47:9 [INFO] [stdout] | [INFO] [stdout] 47 | let visa = PaymentMethodType::CreditCard("hsbc".to_string(), 0201, IsActive::Active); [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_visa` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `masterCard` [INFO] [stdout] --> src/enums.rs:48:9 [INFO] [stdout] | [INFO] [stdout] 48 | let masterCard = PaymentMethodType::CreditCard( [INFO] [stdout] | ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_masterCard` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `pp` [INFO] [stdout] --> src/enums.rs:57:9 [INFO] [stdout] | [INFO] [stdout] 57 | let pp = PaymentMethodType::PayPal { [INFO] [stdout] | ^^ help: if this is intentional, prefix it with an underscore: `_pp` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variants `Hearts`, `Diamonds`, and `Spades` are never constructed [INFO] [stdout] --> src/enums.rs:3:5 [INFO] [stdout] | [INFO] [stdout] 2 | enum CardSuit { [INFO] [stdout] | -------- variants in this enum [INFO] [stdout] 3 | Hearts, [INFO] [stdout] | ^^^^^^ [INFO] [stdout] 4 | Diamonds, [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] 5 | Spades, [INFO] [stdout] | ^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `CardSuit` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `tp` is never read [INFO] [stdout] --> src/enums.rs:11:5 [INFO] [stdout] | [INFO] [stdout] 10 | struct mcbc { [INFO] [stdout] | ---- field in this struct [INFO] [stdout] 11 | tp: CardSuit, [INFO] [stdout] | ^^ [INFO] [stdout] | [INFO] [stdout] = note: `mcbc` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: fields `0`, `1`, and `2` are never read [INFO] [stdout] --> src/enums.rs:16:16 [INFO] [stdout] | [INFO] [stdout] 16 | CreditCard(String, u64, IsActive), [INFO] [stdout] | ---------- ^^^^^^ ^^^ ^^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | fields in this variant [INFO] [stdout] | [INFO] [stdout] = note: `PaymentMethodType` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] help: consider changing the fields to be of unit type to suppress this warning while preserving the field numbering, or remove the fields [INFO] [stdout] | [INFO] [stdout] 16 - CreditCard(String, u64, IsActive), [INFO] [stdout] 16 + CreditCard((), (), ()), [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: fields `active` and `until` are never read [INFO] [stdout] --> src/enums.rs:18:14 [INFO] [stdout] | [INFO] [stdout] 18 | PayPal { active: bool, until: u64 }, [INFO] [stdout] | ------ ^^^^^^ ^^^^^ [INFO] [stdout] | | [INFO] [stdout] | fields in this variant [INFO] [stdout] | [INFO] [stdout] = note: `PaymentMethodType` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variant `DebitCard` is never constructed [INFO] [stdout] --> src/enums.rs:17:5 [INFO] [stdout] | [INFO] [stdout] 15 | enum PaymentMethodType { [INFO] [stdout] | ----------------- variant in this enum [INFO] [stdout] 16 | CreditCard(String, u64, IsActive), [INFO] [stdout] 17 | DebitCard, [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `PaymentMethodType` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `0` is never read [INFO] [stdout] --> src/enums.rs:23:17 [INFO] [stdout] | [INFO] [stdout] 23 | Deactivated(Since), [INFO] [stdout] | ----------- ^^^^^ [INFO] [stdout] | | [INFO] [stdout] | field in this variant [INFO] [stdout] | [INFO] [stdout] = note: `IsActive` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field [INFO] [stdout] | [INFO] [stdout] 23 - Deactivated(Since), [INFO] [stdout] 23 + Deactivated(()), [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: fields `year` and `reason` are never read [INFO] [stdout] --> src/enums.rs:28:5 [INFO] [stdout] | [INFO] [stdout] 27 | struct Since { [INFO] [stdout] | ----- fields in this struct [INFO] [stdout] 28 | year: u64, [INFO] [stdout] | ^^^^ [INFO] [stdout] 29 | reason: String, [INFO] [stdout] | ^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `Since` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variants `Windows` and `MacOs` are never constructed [INFO] [stdout] --> src/enums.rs:35:5 [INFO] [stdout] | [INFO] [stdout] 34 | enum OperatingSystem { [INFO] [stdout] | --------------- variants in this enum [INFO] [stdout] 35 | Windows, [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] 36 | MacOs(u64), [INFO] [stdout] | ^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable `masterCard` should have a snake case name [INFO] [stdout] --> src/enums.rs:48:9 [INFO] [stdout] | [INFO] [stdout] 48 | let masterCard = PaymentMethodType::CreditCard( [INFO] [stdout] | ^^^^^^^^^^ help: convert the identifier to snake case: `master_card` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(non_snake_case)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct `QualityTime` is never constructed [INFO] [stdout] --> src/traits3Constants.rs:76:8 [INFO] [stdout] | [INFO] [stdout] 76 | struct QualityTime { [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `rg` [INFO] [stdout] --> src/rangeType.rs:2:9 [INFO] [stdout] | [INFO] [stdout] 2 | let rg = 1..32; // include 1 and exclude 32 [1,32) [INFO] [stdout] | ^^ help: if this is intentional, prefix it with an underscore: `_rg` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `rgi` [INFO] [stdout] --> src/rangeType.rs:4:9 [INFO] [stdout] | [INFO] [stdout] 4 | let rgi = 1..=32; // both inclusive of 1 and 32 [1,32] [INFO] [stdout] | ^^^ help: if this is intentional, prefix it with an underscore: `_rgi` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `k` [INFO] [stdout] --> src/result.rs:2:9 [INFO] [stdout] | [INFO] [stdout] 2 | let k:Result = Ok(5); [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_k` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `k` [INFO] [stdout] --> src/result.rs:3:9 [INFO] [stdout] | [INFO] [stdout] 3 | let k:Result = Err(5); [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_k` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `File` [INFO] [stdout] --> src/errorHandling.rs:1:21 [INFO] [stdout] | [INFO] [stdout] 1 | use std::fs::{self, File}; [INFO] [stdout] | ^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `mc` [INFO] [stdout] --> src/result.rs:6:9 [INFO] [stdout] | [INFO] [stdout] 6 | let mc = text.parse::(); [INFO] [stdout] | ^^ help: if this is intentional, prefix it with an underscore: `_mc` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `content` [INFO] [stdout] --> src/result.rs:15:9 [INFO] [stdout] | [INFO] [stdout] 15 | let content = match my_result { [INFO] [stdout] | ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_content` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `Read` [INFO] [stdout] --> src/errorHandling.rs:2:21 [INFO] [stdout] | [INFO] [stdout] 2 | use std::io::{stdin,Read,self}; [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `std::process` [INFO] [stdout] --> src/errorHandling.rs:3:5 [INFO] [stdout] | [INFO] [stdout] 3 | use std::process; [INFO] [stdout] | ^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: type `unit_struct` should have an upper camel case name [INFO] [stdout] --> src/structsAndImpl.rs:12:8 [INFO] [stdout] | [INFO] [stdout] 12 | struct unit_struct; // unit struct is used when one wants to implement a trait on some type but don't want any data. [INFO] [stdout] | ^^^^^^^^^^^ help: convert the identifier to upper camel case: `UnitStruct` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(non_camel_case_types)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: type `rectangle` should have an upper camel case name [INFO] [stdout] --> src/structsAndImpl.rs:14:8 [INFO] [stdout] | [INFO] [stdout] 14 | struct rectangle { [INFO] [stdout] | ^^^^^^^^^ help: convert the identifier to upper camel case: `Rectangle` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `bc` [INFO] [stdout] --> src/ownership.rs:9:9 [INFO] [stdout] | [INFO] [stdout] 9 | let bc = mc.clone(); // the String type implements the Clone trait [INFO] [stdout] | ^^ help: if this is intentional, prefix it with an underscore: `_bc` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `my_integer_reference` [INFO] [stdout] --> src/ownership.rs:21:9 [INFO] [stdout] | [INFO] [stdout] 21 | let my_integer_reference = &my_stack_value; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_my_integer_reference` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: type `mcbc` should have an upper camel case name [INFO] [stdout] --> src/enums.rs:10:8 [INFO] [stdout] | [INFO] [stdout] 10 | struct mcbc { [INFO] [stdout] | ^^^^ help: convert the identifier to upper camel case: `Mcbc` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(non_camel_case_types)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `add_fries_mut` is never used [INFO] [stdout] --> src/ownership.rs:47:4 [INFO] [stdout] | [INFO] [stdout] 47 | fn add_fries_mut(meal: &mut String) { [INFO] [stdout] | ^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `mc` [INFO] [stdout] --> src/enums.rs:40:9 [INFO] [stdout] | [INFO] [stdout] 40 | let mc = CardSuit::Clubs; [INFO] [stdout] | ^^ help: if this is intentional, prefix it with an underscore: `_mc` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `mc` [INFO] [stdout] --> src/enums.rs:43:9 [INFO] [stdout] | [INFO] [stdout] 43 | let mc = mcbc { [INFO] [stdout] | ^^ help: if this is intentional, prefix it with an underscore: `_mc` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `user2` [INFO] [stdout] --> src/structsAndImpl.rs:27:9 [INFO] [stdout] | [INFO] [stdout] 27 | let user2 = User { [INFO] [stdout] | ^^^^^ help: if this is intentional, prefix it with an underscore: `_user2` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `visa` [INFO] [stdout] --> src/enums.rs:47:9 [INFO] [stdout] | [INFO] [stdout] 47 | let visa = PaymentMethodType::CreditCard("hsbc".to_string(), 0201, IsActive::Active); [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_visa` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `masterCard` [INFO] [stdout] --> src/enums.rs:48:9 [INFO] [stdout] | [INFO] [stdout] 48 | let masterCard = PaymentMethodType::CreditCard( [INFO] [stdout] | ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_masterCard` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `pp` [INFO] [stdout] --> src/enums.rs:57:9 [INFO] [stdout] | [INFO] [stdout] 57 | let pp = PaymentMethodType::PayPal { [INFO] [stdout] | ^^ help: if this is intentional, prefix it with an underscore: `_pp` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variants `Hearts`, `Diamonds`, and `Spades` are never constructed [INFO] [stdout] --> src/enums.rs:3:5 [INFO] [stdout] | [INFO] [stdout] 2 | enum CardSuit { [INFO] [stdout] | -------- variants in this enum [INFO] [stdout] 3 | Hearts, [INFO] [stdout] | ^^^^^^ [INFO] [stdout] 4 | Diamonds, [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] 5 | Spades, [INFO] [stdout] | ^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `CardSuit` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `tp` is never read [INFO] [stdout] --> src/enums.rs:11:5 [INFO] [stdout] | [INFO] [stdout] 10 | struct mcbc { [INFO] [stdout] | ---- field in this struct [INFO] [stdout] 11 | tp: CardSuit, [INFO] [stdout] | ^^ [INFO] [stdout] | [INFO] [stdout] = note: `mcbc` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: fields `0`, `1`, and `2` are never read [INFO] [stdout] --> src/enums.rs:16:16 [INFO] [stdout] | [INFO] [stdout] 16 | CreditCard(String, u64, IsActive), [INFO] [stdout] | ---------- ^^^^^^ ^^^ ^^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | fields in this variant [INFO] [stdout] | [INFO] [stdout] = note: `PaymentMethodType` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] help: consider changing the fields to be of unit type to suppress this warning while preserving the field numbering, or remove the fields [INFO] [stdout] | [INFO] [stdout] 16 - CreditCard(String, u64, IsActive), [INFO] [stdout] 16 + CreditCard((), (), ()), [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: fields `active` and `until` are never read [INFO] [stdout] --> src/enums.rs:18:14 [INFO] [stdout] | [INFO] [stdout] 18 | PayPal { active: bool, until: u64 }, [INFO] [stdout] | ------ ^^^^^^ ^^^^^ [INFO] [stdout] | | [INFO] [stdout] | fields in this variant [INFO] [stdout] | [INFO] [stdout] = note: `PaymentMethodType` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variant `DebitCard` is never constructed [INFO] [stdout] --> src/enums.rs:17:5 [INFO] [stdout] | [INFO] [stdout] 15 | enum PaymentMethodType { [INFO] [stdout] | ----------------- variant in this enum [INFO] [stdout] 16 | CreditCard(String, u64, IsActive), [INFO] [stdout] 17 | DebitCard, [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `PaymentMethodType` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `0` is never read [INFO] [stdout] --> src/enums.rs:23:17 [INFO] [stdout] | [INFO] [stdout] 23 | Deactivated(Since), [INFO] [stdout] | ----------- ^^^^^ [INFO] [stdout] | | [INFO] [stdout] | field in this variant [INFO] [stdout] | [INFO] [stdout] = note: `IsActive` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field [INFO] [stdout] | [INFO] [stdout] 23 - Deactivated(Since), [INFO] [stdout] 23 + Deactivated(()), [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: fields `year` and `reason` are never read [INFO] [stdout] --> src/enums.rs:28:5 [INFO] [stdout] | [INFO] [stdout] 27 | struct Since { [INFO] [stdout] | ----- fields in this struct [INFO] [stdout] 28 | year: u64, [INFO] [stdout] | ^^^^ [INFO] [stdout] 29 | reason: String, [INFO] [stdout] | ^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `Since` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variants `Windows` and `MacOs` are never constructed [INFO] [stdout] --> src/enums.rs:35:5 [INFO] [stdout] | [INFO] [stdout] 34 | enum OperatingSystem { [INFO] [stdout] | --------------- variants in this enum [INFO] [stdout] 35 | Windows, [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] 36 | MacOs(u64), [INFO] [stdout] | ^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable `masterCard` should have a snake case name [INFO] [stdout] --> src/enums.rs:48:9 [INFO] [stdout] | [INFO] [stdout] 48 | let masterCard = PaymentMethodType::CreditCard( [INFO] [stdout] | ^^^^^^^^^^ help: convert the identifier to snake case: `master_card` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(non_snake_case)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `m3` [INFO] [stdout] --> src/exercise5.rs:60:9 [INFO] [stdout] | [INFO] [stdout] 60 | let m3 = ChatMessage { [INFO] [stdout] | ^^ help: if this is intentional, prefix it with an underscore: `_m3` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: fields `price` and `is_hot` are never read [INFO] [stdout] --> src/structs.rs:3:5 [INFO] [stdout] | [INFO] [stdout] 2 | struct Coffee { [INFO] [stdout] | ------ fields in this struct [INFO] [stdout] 3 | price: f64, [INFO] [stdout] | ^^^^^ [INFO] [stdout] 4 | name: String, [INFO] [stdout] 5 | is_hot: bool, [INFO] [stdout] | ^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `Coffee` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `p1` [INFO] [stdout] --> src/structsAndImpl.rs:40:9 [INFO] [stdout] | [INFO] [stdout] 40 | let p1 = Point(1, 1, 1); [INFO] [stdout] | ^^ help: if this is intentional, prefix it with an underscore: `_p1` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `r2` [INFO] [stdout] --> src/structsAndImpl.rs:56:9 [INFO] [stdout] | [INFO] [stdout] 56 | let r2 = rectangle::square(5); [INFO] [stdout] | ^^ help: if this is intentional, prefix it with an underscore: `_r2` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `username` is never read [INFO] [stdout] --> src/structsAndImpl.rs:5:5 [INFO] [stdout] | [INFO] [stdout] 3 | struct User { [INFO] [stdout] | ---- field in this struct [INFO] [stdout] 4 | active: bool, [INFO] [stdout] 5 | username: String, [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `User` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: fields `0`, `1`, and `2` are never read [INFO] [stdout] --> src/structsAndImpl.rs:10:14 [INFO] [stdout] | [INFO] [stdout] 10 | struct Point(i32, i32, i32); // Tuple Structs are use full when one wants to give an entire tuple a name [INFO] [stdout] | ----- ^^^ ^^^ ^^^ [INFO] [stdout] | | [INFO] [stdout] | fields in this struct [INFO] [stdout] | [INFO] [stdout] = help: consider removing these fields [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct `unit_struct` is never constructed [INFO] [stdout] --> src/structsAndImpl.rs:12:8 [INFO] [stdout] | [INFO] [stdout] 12 | struct unit_struct; // unit struct is used when one wants to implement a trait on some type but don't want any data. [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `buildUser` should have a snake case name [INFO] [stdout] --> src/structsAndImpl.rs:59:4 [INFO] [stdout] | [INFO] [stdout] 59 | fn buildUser(email: String, username: String) -> User { [INFO] [stdout] | ^^^^^^^^^ help: convert the identifier to snake case: `build_user` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(non_snake_case)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `drink_coffee` is never used [INFO] [stdout] --> src/structs.rs:83:4 [INFO] [stdout] | [INFO] [stdout] 83 | fn drink_coffee(coffee: Coffee) { [INFO] [stdout] | ^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `drink_coffee_mutable` is never used [INFO] [stdout] --> src/structs.rs:88:4 [INFO] [stdout] | [INFO] [stdout] 88 | fn drink_coffee_mutable(mut coffee: Coffee) { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `mut_drink_coffee_reference_mutable` is never used [INFO] [stdout] --> src/structs.rs:100:4 [INFO] [stdout] | [INFO] [stdout] 100 | fn mut_drink_coffee_reference_mutable(coffee: &mut Coffee) { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `bc` [INFO] [stdout] --> src/arrayTupleOwnership.rs:3:9 [INFO] [stdout] | [INFO] [stdout] 3 | let bc = arr[1]; [INFO] [stdout] | ^^ help: if this is intentional, prefix it with an underscore: `_bc` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `format` [INFO] [stdout] --> src/traitObjects.rs:2:39 [INFO] [stdout] | [INFO] [stdout] 2 | use std::{collections::HashMap, fmt::{format, Display}}; [INFO] [stdout] | ^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `std::ops::Add` [INFO] [stdout] --> src/traitObjects.rs:4:5 [INFO] [stdout] | [INFO] [stdout] 4 | use std::ops::Add; [INFO] [stdout] | ^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: type `test1` should have an upper camel case name [INFO] [stdout] --> src/if-let-let-else.rs:3:6 [INFO] [stdout] | [INFO] [stdout] 3 | enum test1 { [INFO] [stdout] | ^^^^^ help: convert the identifier to upper camel case: `Test1` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(non_camel_case_types)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variant `a` should have an upper camel case name [INFO] [stdout] --> src/if-let-let-else.rs:4:5 [INFO] [stdout] | [INFO] [stdout] 4 | a, [INFO] [stdout] | ^ help: convert the identifier to upper camel case: `A` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `a1` [INFO] [stdout] --> src/arrayTupleOwnership.rs:19:9 [INFO] [stdout] | [INFO] [stdout] 19 | let a1 = arr[0].clone(); [INFO] [stdout] | ^^ help: if this is intentional, prefix it with an underscore: `_a1` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variant `b` should have an upper camel case name [INFO] [stdout] --> src/if-let-let-else.rs:5:5 [INFO] [stdout] | [INFO] [stdout] 5 | b, [INFO] [stdout] | ^ help: convert the identifier to upper camel case: `B` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `mc` [INFO] [stdout] --> src/arrayTupleOwnership.rs:35:9 [INFO] [stdout] | [INFO] [stdout] 35 | let mc = abc.2.clone(); // method 1 [INFO] [stdout] | ^^ help: if this is intentional, prefix it with an underscore: `_mc` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variant `c` should have an upper camel case name [INFO] [stdout] --> src/if-let-let-else.rs:6:5 [INFO] [stdout] | [INFO] [stdout] 6 | c(String), [INFO] [stdout] | ^ help: convert the identifier to upper camel case (notice the capitalization): `C` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variant `d` should have an upper camel case name [INFO] [stdout] --> src/if-let-let-else.rs:7:5 [INFO] [stdout] | [INFO] [stdout] 7 | d{ kind: String}, [INFO] [stdout] | ^ help: convert the identifier to upper camel case: `D` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variant `VideoFile` is never constructed [INFO] [stdout] --> src/exercise5.rs:42:5 [INFO] [stdout] | [INFO] [stdout] 40 | enum DigitalContent { [INFO] [stdout] | -------------- variant in this enum [INFO] [stdout] 41 | AudioFile, [INFO] [stdout] 42 | VideoFile [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `DigitalContent` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `mc` [INFO] [stdout] --> src/arrayTupleOwnership.rs:36:9 [INFO] [stdout] | [INFO] [stdout] 36 | let mc = &abc.2; // method 2 [INFO] [stdout] | ^^ help: if this is intentional, prefix it with an underscore: `_mc` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable `f` is assigned to, but never used [INFO] [stdout] --> src/option.rs:3:13 [INFO] [stdout] | [INFO] [stdout] 3 | let mut f = Some(64); [INFO] [stdout] | ^ [INFO] [stdout] | [INFO] [stdout] = note: consider using `_f` instead [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: value assigned to `f` is never read [INFO] [stdout] --> src/option.rs:4:5 [INFO] [stdout] | [INFO] [stdout] 4 | f = None; [INFO] [stdout] | ^ [INFO] [stdout] | [INFO] [stdout] = help: maybe it is overwritten before being read? [INFO] [stdout] = note: `#[warn(unused_assignments)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `k` [INFO] [stdout] --> src/option.rs:6:9 [INFO] [stdout] | [INFO] [stdout] 6 | let k:Option = None; [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_k` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variant `d` is never constructed [INFO] [stdout] --> src/if-let-let-else.rs:7:5 [INFO] [stdout] | [INFO] [stdout] 3 | enum test1 { [INFO] [stdout] | ----- variant in this enum [INFO] [stdout] ... [INFO] [stdout] 7 | d{ kind: String}, [INFO] [stdout] | ^ [INFO] [stdout] | [INFO] [stdout] = note: `test1` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait `Accommodation` is never used [INFO] [stdout] --> src/traitObjects.rs:6:7 [INFO] [stdout] | [INFO] [stdout] 6 | trait Accommodation { [INFO] [stdout] | ^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `reservations` is never read [INFO] [stdout] --> src/traitObjects.rs:28:5 [INFO] [stdout] | [INFO] [stdout] 26 | struct Hotel { [INFO] [stdout] | ----- field in this struct [INFO] [stdout] 27 | name: T, [INFO] [stdout] 28 | reservations: HashMap [INFO] [stdout] | ^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `Hotel` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `guests` is never read [INFO] [stdout] --> src/traitObjects.rs:55:5 [INFO] [stdout] | [INFO] [stdout] 53 | struct AirBnB { [INFO] [stdout] | ------ field in this struct [INFO] [stdout] 54 | host: String, [INFO] [stdout] 55 | guests: Vec<(String,u32)> [INFO] [stdout] | ^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `AirBnB` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `Read` [INFO] [stdout] --> src/exercise10.rs:1:19 [INFO] [stdout] | [INFO] [stdout] 1 | use std::{fs,io::{Read,self}}; [INFO] [stdout] | ^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `std::process` [INFO] [stdout] --> src/exercise10.rs:3:5 [INFO] [stdout] | [INFO] [stdout] 3 | use std::process; [INFO] [stdout] | ^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `File` [INFO] [stdout] --> src/exercise10.rs:4:15 [INFO] [stdout] | [INFO] [stdout] 4 | use std::fs::{File}; [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: fields `price` and `is_hot` are never read [INFO] [stdout] --> src/structs.rs:3:5 [INFO] [stdout] | [INFO] [stdout] 2 | struct Coffee { [INFO] [stdout] | ------ fields in this struct [INFO] [stdout] 3 | price: f64, [INFO] [stdout] | ^^^^^ [INFO] [stdout] 4 | name: String, [INFO] [stdout] 5 | is_hot: bool, [INFO] [stdout] | ^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `Coffee` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `drink_coffee` is never used [INFO] [stdout] --> src/structs.rs:83:4 [INFO] [stdout] | [INFO] [stdout] 83 | fn drink_coffee(coffee: Coffee) { [INFO] [stdout] | ^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: type `meow` should have an upper camel case name [INFO] [stdout] --> src/typeAliase.rs:1:6 [INFO] [stdout] | [INFO] [stdout] 1 | type meow = u64; [INFO] [stdout] | ^^^^ help: convert the identifier to upper camel case: `Meow` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(non_camel_case_types)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `km1` [INFO] [stdout] --> src/typeAliase.rs:3:9 [INFO] [stdout] | [INFO] [stdout] 3 | let km1: meow = 1000; [INFO] [stdout] | ^^^ help: if this is intentional, prefix it with an underscore: `_km1` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `drink_coffee_mutable` is never used [INFO] [stdout] --> src/structs.rs:88:4 [INFO] [stdout] | [INFO] [stdout] 88 | fn drink_coffee_mutable(mut coffee: Coffee) { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `mut_drink_coffee_reference_mutable` is never used [INFO] [stdout] --> src/structs.rs:100:4 [INFO] [stdout] | [INFO] [stdout] 100 | fn mut_drink_coffee_reference_mutable(coffee: &mut Coffee) { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `format` [INFO] [stdout] --> src/ttraits.rs:2:16 [INFO] [stdout] | [INFO] [stdout] 2 | use std::fmt::{format, Display}; [INFO] [stdout] | ^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: type `mc` should have an upper camel case name [INFO] [stdout] --> src/ttraits.rs:135:8 [INFO] [stdout] | [INFO] [stdout] 135 | struct mc /*mc */ { // Any type T that implements Accommodation [INFO] [stdout] | ^^ help: convert the identifier to upper camel case: `Mc` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(non_camel_case_types)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: type `time` should have an upper camel case name [INFO] [stdout] --> src/generic.rs:2:8 [INFO] [stdout] | [INFO] [stdout] 2 | struct time { [INFO] [stdout] | ^^^^ help: convert the identifier to upper camel case: `Time` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(non_camel_case_types)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: type `blah` should have an upper camel case name [INFO] [stdout] --> src/generic.rs:7:6 [INFO] [stdout] | [INFO] [stdout] 7 | enum blah { [INFO] [stdout] | ^^^^ help: convert the identifier to upper camel case: `Blah` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variant `plain` should have an upper camel case name [INFO] [stdout] --> src/generic.rs:8:5 [INFO] [stdout] | [INFO] [stdout] 8 | plain, [INFO] [stdout] | ^^^^^ help: convert the identifier to upper camel case: `Plain` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variant `abc` should have an upper camel case name [INFO] [stdout] --> src/generic.rs:9:5 [INFO] [stdout] | [INFO] [stdout] 9 | abc(T) [INFO] [stdout] | ^^^ help: convert the identifier to upper camel case: `Abc` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `format` [INFO] [stdout] --> src/exercise11.rs:1:16 [INFO] [stdout] | [INFO] [stdout] 1 | use std::fmt::{format, Debug, Display, Formatter}; [INFO] [stdout] | ^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `format` [INFO] [stdout] --> src/traits2.rs:2:39 [INFO] [stdout] | [INFO] [stdout] 2 | use std::{collections::HashMap, fmt::{format, Display}}; [INFO] [stdout] | ^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/slices.rs:6:9 [INFO] [stdout] | [INFO] [stdout] 6 | let mut myslice = &mut my_array[2..4]; [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: `now` [INFO] [stdout] --> src/generic.rs:17:13 [INFO] [stdout] | [INFO] [stdout] 17 | let mut now = time:: { [INFO] [stdout] | ^^^ help: if this is intentional, prefix it with an underscore: `_now` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `bc` [INFO] [stdout] --> src/generic.rs:24:13 [INFO] [stdout] | [INFO] [stdout] 24 | let mut bc:[&str;3] = ["aa","aa","aa"]; [INFO] [stdout] | ^^ help: if this is intentional, prefix it with an underscore: `_bc` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `dd` [INFO] [stdout] --> src/generic.rs:30:9 [INFO] [stdout] | [INFO] [stdout] 30 | let dd = blah::::plain; [INFO] [stdout] | ^^ help: if this is intentional, prefix it with an underscore: `_dd` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable `dd` is assigned to, but never used [INFO] [stdout] --> src/generic.rs:31:13 [INFO] [stdout] | [INFO] [stdout] 31 | let mut dd:blah = blah::plain; [INFO] [stdout] | ^^ [INFO] [stdout] | [INFO] [stdout] = note: consider using `_dd` instead [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: value assigned to `dd` is never read [INFO] [stdout] --> src/generic.rs:32:5 [INFO] [stdout] | [INFO] [stdout] 32 | dd = blah::abc("String".to_string()); // compiler will now enforce T to be String [INFO] [stdout] | ^^ [INFO] [stdout] | [INFO] [stdout] = help: maybe it is overwritten before being read? [INFO] [stdout] = note: `#[warn(unused_assignments)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `hotel3` [INFO] [stdout] --> src/traitsContd.rs:143:13 [INFO] [stdout] | [INFO] [stdout] 143 | let mut hotel3 = choose_best_place_to_stay(); // observe this the type is impl Accommodation + Description and Hotel type [INFO] [stdout] | ^^^^^^ help: if this is intentional, prefix it with an underscore: `_hotel3` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `h3` [INFO] [stdout] --> src/traitsContd.rs:148:9 [INFO] [stdout] | [INFO] [stdout] 148 | let h3 = Hotel::new( vec![1,2,3]); [INFO] [stdout] | ^^ help: if this is intentional, prefix it with an underscore: `_h3` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/generic.rs:17:9 [INFO] [stdout] | [INFO] [stdout] 17 | let mut now = time:: { [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/generic.rs:24:9 [INFO] [stdout] | [INFO] [stdout] 24 | let mut bc:[&str;3] = ["aa","aa","aa"]; [INFO] [stdout] | ----^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: fields `minutes` and `hours` are never read [INFO] [stdout] --> src/generic.rs:3:5 [INFO] [stdout] | [INFO] [stdout] 2 | struct time { [INFO] [stdout] | ---- fields in this struct [INFO] [stdout] 3 | minutes:T, [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] 4 | hours : f64 [INFO] [stdout] | ^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `time` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `first` [INFO] [stdout] --> src/ttraits.rs:90:14 [INFO] [stdout] | [INFO] [stdout] 90 | fn nxx (first: &mut T,second: &mut U) where T: Accommodation, U: Accommodation { [INFO] [stdout] | ^^^^^ help: if this is intentional, prefix it with an underscore: `_first` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `second` [INFO] [stdout] --> src/ttraits.rs:90:28 [INFO] [stdout] | [INFO] [stdout] 90 | fn nxx (first: &mut T,second: &mut U) where T: Accommodation, U: Accommodation { [INFO] [stdout] | ^^^^^^ help: if this is intentional, prefix it with an underscore: `_second` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `book_for_one_night_trait_bound` is never used [INFO] [stdout] --> src/ttraits.rs:70:4 [INFO] [stdout] | [INFO] [stdout] 70 | fn book_for_one_night_trait_bound (entity: &mut T) { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `mix_and_match` is never used [INFO] [stdout] --> src/ttraits.rs:75:4 [INFO] [stdout] | [INFO] [stdout] 75 | fn mix_and_match(first: &mut impl Accommodation, second: &mut impl Accommodation,guest: &str) { // here first and second can be any types... [INFO] [stdout] | ^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `mix_and_match_2` is never used [INFO] [stdout] --> src/ttraits.rs:80:4 [INFO] [stdout] | [INFO] [stdout] 80 | fn mix_and_match_2(first: &mut T, second: &mut T,guest: &str) { // here both first and second are of both type T [INFO] [stdout] | ^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `mix_and_match_2_fix` is never used [INFO] [stdout] --> src/ttraits.rs:85:4 [INFO] [stdout] | [INFO] [stdout] 85 | fn mix_and_match_2_fix(first: &mut T, second: &mut U,guest: &str) { // here both first and second are ... [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `nxx` is never used [INFO] [stdout] --> src/ttraits.rs:90:4 [INFO] [stdout] | [INFO] [stdout] 90 | fn nxx (first: &mut T,second: &mut U) where T: Accommodation, U: Accommodation { [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `traits_as_return_types` is never used [INFO] [stdout] --> src/ttraits.rs:94:4 [INFO] [stdout] | [INFO] [stdout] 94 | fn traits_as_return_types() -> impl Accommodation { // Any type that implements Accommodation can be returned [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct `mc` is never constructed [INFO] [stdout] --> src/ttraits.rs:135:8 [INFO] [stdout] | [INFO] [stdout] 135 | struct mc /*mc */ { // Any type T that implements Accommodation [INFO] [stdout] | ^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: method `summarize` is never used [INFO] [stdout] --> src/ttraits.rs:141:8 [INFO] [stdout] | [INFO] [stdout] 140 | impl mc { [INFO] [stdout] | ---------------------- method in this implementation [INFO] [stdout] 141 | fn summarize(&self) -> String { [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function `new` is never used [INFO] [stdout] --> src/ttraits.rs:147:6 [INFO] [stdout] | [INFO] [stdout] 146 | impl mc { [INFO] [stdout] | -------------- associated function in this implementation [INFO] [stdout] 147 | fn new(name:T) -> Self { [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/traitsContd.rs:143:9 [INFO] [stdout] | [INFO] [stdout] 143 | let mut hotel3 = choose_best_place_to_stay(); // observe this the type is impl Accommodation + Description and Hotel type [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 `mix_and_match_with_generics` is never used [INFO] [stdout] --> src/traitsContd.rs:85:4 [INFO] [stdout] | [INFO] [stdout] 85 | fn mix_and_match_with_generics (first: &mut T, second: &mut T, guest: &str) { // here both the types T are the same mea... [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `mix_and_match_with_generics_fix_with_multiple_trait_bounds` is never used [INFO] [stdout] --> src/traitsContd.rs:95:4 [INFO] [stdout] | [INFO] [stdout] 95 | fn mix_and_match_with_generics_fix_with_multiple_trait_bounds (first: &mut T, second: &... [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: type `bc` should have an upper camel case name [INFO] [stdout] --> src/exercise3.rs:44:8 [INFO] [stdout] | [INFO] [stdout] 44 | struct bc; [INFO] [stdout] | ^^ help: convert the identifier to upper camel case: `Bc` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(non_camel_case_types)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `mix_and_match_with_generics_fix_with_multiple_trait_bounds_with_where` is never used [INFO] [stdout] --> src/traitsContd.rs:100:4 [INFO] [stdout] | [INFO] [stdout] 100 | fn mix_and_match_with_generics_fix_with_multiple_trait_bounds_with_where (first: &mut T, second: &mut U, guest: &str) where T: Acc... [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: type `mc` should have an upper camel case name [INFO] [stdout] --> src/exercise3.rs:45:8 [INFO] [stdout] | [INFO] [stdout] 45 | struct mc(u32, u32); [INFO] [stdout] | ^^ help: convert the identifier to upper camel case: `Mc` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable `airBnB` should have a snake case name [INFO] [stdout] --> src/traitsContd.rs:127:13 [INFO] [stdout] | [INFO] [stdout] 127 | let mut airBnB = AirBnB::new("Peter"); [INFO] [stdout] | ^^^^^^ help: convert the identifier to snake case: `air_bn_b` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(non_snake_case)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable `airBnB2` should have a snake case name [INFO] [stdout] --> src/traitsContd.rs:135:13 [INFO] [stdout] | [INFO] [stdout] 135 | let mut airBnB2 = AirBnB::new("Peter"); [INFO] [stdout] | ^^^^^^^ help: convert the identifier to snake case: `air_bn_b2` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `rg` [INFO] [stdout] --> src/rangeType.rs:2:9 [INFO] [stdout] | [INFO] [stdout] 2 | let rg = 1..32; // include 1 and exclude 32 [1,32) [INFO] [stdout] | ^^ help: if this is intentional, prefix it with an underscore: `_rg` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `rgi` [INFO] [stdout] --> src/rangeType.rs:4:9 [INFO] [stdout] | [INFO] [stdout] 4 | let rgi = 1..=32; // both inclusive of 1 and 32 [1,32] [INFO] [stdout] | ^^^ help: if this is intentional, prefix it with an underscore: `_rgi` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `hotel` [INFO] [stdout] --> src/traits2.rs:91:9 [INFO] [stdout] | [INFO] [stdout] 91 | let hotel = Hotel::new(String::from("The Luxe")); [INFO] [stdout] | ^^^^^ help: if this is intentional, prefix it with an underscore: `_hotel` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `airbnb` [INFO] [stdout] --> src/traits2.rs:92:9 [INFO] [stdout] | [INFO] [stdout] 92 | let airbnb = AirBnB::new("Peter"); [INFO] [stdout] | ^^^^^^ help: if this is intentional, prefix it with an underscore: `_airbnb` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: type `myOption` should have an upper camel case name [INFO] [stdout] --> src/optionFromScratch.rs:1:6 [INFO] [stdout] | [INFO] [stdout] 1 | enum myOption { [INFO] [stdout] | ^^^^^^^^ help: convert the identifier to upper camel case: `MyOption` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(non_camel_case_types)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait `Accommodation` is never used [INFO] [stdout] --> src/traits2.rs:4:7 [INFO] [stdout] | [INFO] [stdout] 4 | trait Accommodation { [INFO] [stdout] | ^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `reservations` is never read [INFO] [stdout] --> src/traits2.rs:27:5 [INFO] [stdout] | [INFO] [stdout] 25 | struct Hotel { [INFO] [stdout] | ----- field in this struct [INFO] [stdout] 26 | name: T, [INFO] [stdout] 27 | reservations: HashMap [INFO] [stdout] | ^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `Hotel` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `guests` is never read [INFO] [stdout] --> src/traits2.rs:51:5 [INFO] [stdout] | [INFO] [stdout] 49 | struct AirBnB { [INFO] [stdout] | ------ field in this struct [INFO] [stdout] 50 | host: String, [INFO] [stdout] 51 | guests: Vec<(String,u32)> [INFO] [stdout] | ^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `AirBnB` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `mix_and_match` is never used [INFO] [stdout] --> src/traits2.rs:75:4 [INFO] [stdout] | [INFO] [stdout] 75 | fn mix_and_match(first: &mut T, second: &mut U,guest: &str) { // here both first and second are of bot... [INFO] [stdout] | ^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: method `stats` is never used [INFO] [stdout] --> src/exercise11.rs:6:8 [INFO] [stdout] | [INFO] [stdout] 3 | trait Drinkable { [INFO] [stdout] | --------- method in this trait [INFO] [stdout] ... [INFO] [stdout] 6 | fn stats(&self) -> String { [INFO] [stdout] | ^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variant `Whole` is never constructed [INFO] [stdout] --> src/exercise11.rs:13:5 [INFO] [stdout] | [INFO] [stdout] 12 | enum Milk { [INFO] [stdout] | ---- variant in this enum [INFO] [stdout] 13 | Whole, [INFO] [stdout] | ^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `Milk` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variant `Some` is never constructed [INFO] [stdout] --> src/optionFromScratch.rs:2:5 [INFO] [stdout] | [INFO] [stdout] 1 | enum myOption { [INFO] [stdout] | -------- variant in this enum [INFO] [stdout] 2 | Some(i32), [INFO] [stdout] | ^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `passengers` is never read [INFO] [stdout] --> src/exercise3.rs:41:5 [INFO] [stdout] | [INFO] [stdout] 37 | struct Flight { [INFO] [stdout] | ------ field in this struct [INFO] [stdout] ... [INFO] [stdout] 41 | passengers: u32, [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `Flight` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct `bc` is never constructed [INFO] [stdout] --> src/exercise3.rs:44:8 [INFO] [stdout] | [INFO] [stdout] 44 | struct bc; [INFO] [stdout] | ^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct `mc` is never constructed [INFO] [stdout] --> src/exercise3.rs:45:8 [INFO] [stdout] | [INFO] [stdout] 45 | struct mc(u32, u32); [INFO] [stdout] | ^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `name` is never read [INFO] [stdout] --> src/exercise6.rs:70:5 [INFO] [stdout] | [INFO] [stdout] 69 | struct Food { [INFO] [stdout] | ---- field in this struct [INFO] [stdout] 70 | name: String [INFO] [stdout] | ^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `Food` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `genres` [INFO] [stdout] --> src/stringOp.rs:35:9 [INFO] [stdout] | [INFO] [stdout] 35 | let genres= music.split(", ").collect::>(); [INFO] [stdout] | ^^^^^^ help: if this is intentional, prefix it with an underscore: `_genres` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `a` [INFO] [stdout] --> src/lifetimeGeneric.rs:39:12 [INFO] [stdout] | [INFO] [stdout] 39 | fn blah(a:T) { [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_a` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `blah` is never used [INFO] [stdout] --> src/lifetimeGeneric.rs:39:4 [INFO] [stdout] | [INFO] [stdout] 39 | fn blah(a:T) { [INFO] [stdout] | ^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: type `myOption` should have an upper camel case name [INFO] [stdout] --> src/optionFromScratch.rs:1:6 [INFO] [stdout] | [INFO] [stdout] 1 | enum myOption { [INFO] [stdout] | ^^^^^^^^ help: convert the identifier to upper camel case: `MyOption` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(non_camel_case_types)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `k` [INFO] [stdout] --> src/result.rs:2:9 [INFO] [stdout] | [INFO] [stdout] 2 | let k:Result = Ok(5); [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_k` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused return value of `core::str::::trim` that must be used [INFO] [stdout] --> src/stringOp.rs:26:5 [INFO] [stdout] | [INFO] [stdout] 26 | icon.trim(); [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this returns the trimmed string as a slice, without modifying the original [INFO] [stdout] = note: `#[warn(unused_must_use)]` on by default [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 26 | let _ = icon.trim(); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variant `Some` is never constructed [INFO] [stdout] --> src/optionFromScratch.rs:2:5 [INFO] [stdout] | [INFO] [stdout] 1 | enum myOption { [INFO] [stdout] | -------- variant in this enum [INFO] [stdout] 2 | Some(i32), [INFO] [stdout] | ^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `k` [INFO] [stdout] --> src/result.rs:3:9 [INFO] [stdout] | [INFO] [stdout] 3 | let k:Result = Err(5); [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_k` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `mc` [INFO] [stdout] --> src/result.rs:6:9 [INFO] [stdout] | [INFO] [stdout] 6 | let mc = text.parse::(); [INFO] [stdout] | ^^ help: if this is intentional, prefix it with an underscore: `_mc` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `content` [INFO] [stdout] --> src/result.rs:15:9 [INFO] [stdout] | [INFO] [stdout] 15 | let content = match my_result { [INFO] [stdout] | ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_content` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `genres` [INFO] [stdout] --> src/stringOp.rs:35:9 [INFO] [stdout] | [INFO] [stdout] 35 | let genres= music.split(", ").collect::>(); [INFO] [stdout] | ^^^^^^ help: if this is intentional, prefix it with an underscore: `_genres` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `format` [INFO] [stdout] --> src/exercise11.rs:1:16 [INFO] [stdout] | [INFO] [stdout] 1 | use std::fmt::{format, Debug, Display, Formatter}; [INFO] [stdout] | ^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `Read` [INFO] [stdout] --> src/exercise10.rs:1:19 [INFO] [stdout] | [INFO] [stdout] 1 | use std::{fs,io::{Read,self}}; [INFO] [stdout] | ^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `std::process` [INFO] [stdout] --> src/exercise10.rs:3:5 [INFO] [stdout] | [INFO] [stdout] 3 | use std::process; [INFO] [stdout] | ^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `File` [INFO] [stdout] --> src/exercise10.rs:4:15 [INFO] [stdout] | [INFO] [stdout] 4 | use std::fs::{File}; [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: type `time` should have an upper camel case name [INFO] [stdout] --> src/generic.rs:2:8 [INFO] [stdout] | [INFO] [stdout] 2 | struct time { [INFO] [stdout] | ^^^^ help: convert the identifier to upper camel case: `Time` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(non_camel_case_types)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: type `blah` should have an upper camel case name [INFO] [stdout] --> src/generic.rs:7:6 [INFO] [stdout] | [INFO] [stdout] 7 | enum blah { [INFO] [stdout] | ^^^^ help: convert the identifier to upper camel case: `Blah` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variant `plain` should have an upper camel case name [INFO] [stdout] --> src/generic.rs:8:5 [INFO] [stdout] | [INFO] [stdout] 8 | plain, [INFO] [stdout] | ^^^^^ help: convert the identifier to upper camel case: `Plain` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variant `abc` should have an upper camel case name [INFO] [stdout] --> src/generic.rs:9:5 [INFO] [stdout] | [INFO] [stdout] 9 | abc(T) [INFO] [stdout] | ^^^ help: convert the identifier to upper camel case: `Abc` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused return value of `core::str::::trim` that must be used [INFO] [stdout] --> src/stringOp.rs:26:5 [INFO] [stdout] | [INFO] [stdout] 26 | icon.trim(); [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this returns the trimmed string as a slice, without modifying the original [INFO] [stdout] = note: `#[warn(unused_must_use)]` on by default [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 26 | let _ = icon.trim(); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `a` [INFO] [stdout] --> src/lifetime.rs:4:9 [INFO] [stdout] | [INFO] [stdout] 4 | let a = 1; [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_a` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable `f` is assigned to, but never used [INFO] [stdout] --> src/option.rs:3:13 [INFO] [stdout] | [INFO] [stdout] 3 | let mut f = Some(64); [INFO] [stdout] | ^ [INFO] [stdout] | [INFO] [stdout] = note: consider using `_f` instead [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `b` [INFO] [stdout] --> src/lifetime.rs:7:13 [INFO] [stdout] | [INFO] [stdout] 7 | let b = 2; // life time of this scope [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_b` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `my_pet` [INFO] [stdout] --> src/lifetime.rs:19:9 [INFO] [stdout] | [INFO] [stdout] 19 | let my_pet = &dog; [INFO] [stdout] | ^^^^^^ help: if this is intentional, prefix it with an underscore: `_my_pet` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: value assigned to `f` is never read [INFO] [stdout] --> src/option.rs:4:5 [INFO] [stdout] | [INFO] [stdout] 4 | f = None; [INFO] [stdout] | ^ [INFO] [stdout] | [INFO] [stdout] = help: maybe it is overwritten before being read? [INFO] [stdout] = note: `#[warn(unused_assignments)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `fav` [INFO] [stdout] --> src/lifetime.rs:55:9 [INFO] [stdout] | [INFO] [stdout] 55 | let fav = &cities[0..2]; // lifetime begins and end here [INFO] [stdout] | ^^^ help: if this is intentional, prefix it with an underscore: `_fav` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `same_cities` [INFO] [stdout] --> src/lifetime.rs:56:9 [INFO] [stdout] | [INFO] [stdout] 56 | let same_cities = cities; [INFO] [stdout] | ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_same_cities` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `k` [INFO] [stdout] --> src/option.rs:6:9 [INFO] [stdout] | [INFO] [stdout] 6 | let k:Option = None; [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_k` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `now` [INFO] [stdout] --> src/generic.rs:17:13 [INFO] [stdout] | [INFO] [stdout] 17 | let mut now = time:: { [INFO] [stdout] | ^^^ help: if this is intentional, prefix it with an underscore: `_now` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `bc` [INFO] [stdout] --> src/generic.rs:24:13 [INFO] [stdout] | [INFO] [stdout] 24 | let mut bc:[&str;3] = ["aa","aa","aa"]; [INFO] [stdout] | ^^ help: if this is intentional, prefix it with an underscore: `_bc` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `dd` [INFO] [stdout] --> src/generic.rs:30:9 [INFO] [stdout] | [INFO] [stdout] 30 | let dd = blah::::plain; [INFO] [stdout] | ^^ help: if this is intentional, prefix it with an underscore: `_dd` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable `dd` is assigned to, but never used [INFO] [stdout] --> src/generic.rs:31:13 [INFO] [stdout] | [INFO] [stdout] 31 | let mut dd:blah = blah::plain; [INFO] [stdout] | ^^ [INFO] [stdout] | [INFO] [stdout] = note: consider using `_dd` instead [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: value assigned to `dd` is never read [INFO] [stdout] --> src/generic.rs:32:5 [INFO] [stdout] | [INFO] [stdout] 32 | dd = blah::abc("String".to_string()); // compiler will now enforce T to be String [INFO] [stdout] | ^^ [INFO] [stdout] | [INFO] [stdout] = help: maybe it is overwritten before being read? [INFO] [stdout] = note: `#[warn(unused_assignments)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/generic.rs:17:9 [INFO] [stdout] | [INFO] [stdout] 17 | let mut now = time:: { [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/generic.rs:24:9 [INFO] [stdout] | [INFO] [stdout] 24 | let mut bc:[&str;3] = ["aa","aa","aa"]; [INFO] [stdout] | ----^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: fields `minutes` and `hours` are never read [INFO] [stdout] --> src/generic.rs:3:5 [INFO] [stdout] | [INFO] [stdout] 2 | struct time { [INFO] [stdout] | ---- fields in this struct [INFO] [stdout] 3 | minutes:T, [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] 4 | hours : f64 [INFO] [stdout] | ^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `time` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: type `meow` should have an upper camel case name [INFO] [stdout] --> src/typeAliase.rs:1:6 [INFO] [stdout] | [INFO] [stdout] 1 | type meow = u64; [INFO] [stdout] | ^^^^ help: convert the identifier to upper camel case: `Meow` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(non_camel_case_types)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: method `stats` is never used [INFO] [stdout] --> src/exercise11.rs:6:8 [INFO] [stdout] | [INFO] [stdout] 3 | trait Drinkable { [INFO] [stdout] | --------- method in this trait [INFO] [stdout] ... [INFO] [stdout] 6 | fn stats(&self) -> String { [INFO] [stdout] | ^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variant `Whole` is never constructed [INFO] [stdout] --> src/exercise11.rs:13:5 [INFO] [stdout] | [INFO] [stdout] 12 | enum Milk { [INFO] [stdout] | ---- variant in this enum [INFO] [stdout] 13 | Whole, [INFO] [stdout] | ^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `Milk` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `km1` [INFO] [stdout] --> src/typeAliase.rs:3:9 [INFO] [stdout] | [INFO] [stdout] 3 | let km1: meow = 1000; [INFO] [stdout] | ^^^ help: if this is intentional, prefix it with an underscore: `_km1` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variants `Gold` and `Silver` are never constructed [INFO] [stdout] --> src/exercise4.rs:40:5 [INFO] [stdout] | [INFO] [stdout] 39 | enum Tier { [INFO] [stdout] | ---- variants in this enum [INFO] [stdout] 40 | Gold, [INFO] [stdout] | ^^^^ [INFO] [stdout] 41 | Silver, [INFO] [stdout] | ^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `Tier` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `name` is never read [INFO] [stdout] --> src/exercise6.rs:70:5 [INFO] [stdout] | [INFO] [stdout] 69 | struct Food { [INFO] [stdout] | ---- field in this struct [INFO] [stdout] 70 | name: String [INFO] [stdout] | ^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `Food` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `bc` [INFO] [stdout] --> src/ownership.rs:9:9 [INFO] [stdout] | [INFO] [stdout] 9 | let bc = mc.clone(); // the String type implements the Clone trait [INFO] [stdout] | ^^ help: if this is intentional, prefix it with an underscore: `_bc` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `my_integer_reference` [INFO] [stdout] --> src/ownership.rs:21:9 [INFO] [stdout] | [INFO] [stdout] 21 | let my_integer_reference = &my_stack_value; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_my_integer_reference` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `add_fries_mut` is never used [INFO] [stdout] --> src/ownership.rs:47:4 [INFO] [stdout] | [INFO] [stdout] 47 | fn add_fries_mut(meal: &mut String) { [INFO] [stdout] | ^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variants `Gold` and `Silver` are never constructed [INFO] [stdout] --> src/exercise4.rs:40:5 [INFO] [stdout] | [INFO] [stdout] 39 | enum Tier { [INFO] [stdout] | ---- variants in this enum [INFO] [stdout] 40 | Gold, [INFO] [stdout] | ^^^^ [INFO] [stdout] 41 | Silver, [INFO] [stdout] | ^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `Tier` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct `QualityTime` is never constructed [INFO] [stdout] --> src/traits3Constants.rs:76:8 [INFO] [stdout] | [INFO] [stdout] 76 | struct QualityTime { [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.45s [INFO] running `Command { std: "docker" "inspect" "72f7657b864cdef47694b331a1b64370ef1cacdda7efb77e9418ee80fb25878f", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "72f7657b864cdef47694b331a1b64370ef1cacdda7efb77e9418ee80fb25878f", kill_on_drop: false }` [INFO] [stdout] 72f7657b864cdef47694b331a1b64370ef1cacdda7efb77e9418ee80fb25878f