[INFO] cloning repository https://github.com/Elizabevil/RustLearn
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Elizabevil/RustLearn" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FElizabevil%2FRustLearn", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FElizabevil%2FRustLearn'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 141b2a880155cd327eeb277a182e340b9c481575
[INFO] checking Elizabevil/RustLearn against try#b32fc44666c052e7cf07ab471bfb6f9ec571902f for pr-138676
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FElizabevil%2FRustLearn" "/workspace/builds/worker-3-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Elizabevil/RustLearn on toolchain b32fc44666c052e7cf07ab471bfb6f9ec571902f
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b32fc44666c052e7cf07ab471bfb6f9ec571902f" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Elizabevil/RustLearn
[INFO] finished tweaking git repo https://github.com/Elizabevil/RustLearn
[INFO] tweaked toml for git repo https://github.com/Elizabevil/RustLearn written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/Elizabevil/RustLearn 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" "+b32fc44666c052e7cf07ab471bfb6f9ec571902f" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:1680c8fbd8dfb46fcd6d22e546df16ab0e007457dc29fcd9e987cdd5077fd1af" "/opt/rustwide/cargo-home/bin/cargo" "+b32fc44666c052e7cf07ab471bfb6f9ec571902f" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] cb3a8c09abe653a1f82405b89c3de68798d134a13603245ca6027c444ef36f04
[INFO] running `Command { std: "docker" "start" "-a" "cb3a8c09abe653a1f82405b89c3de68798d134a13603245ca6027c444ef36f04", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "cb3a8c09abe653a1f82405b89c3de68798d134a13603245ca6027c444ef36f04", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cb3a8c09abe653a1f82405b89c3de68798d134a13603245ca6027c444ef36f04", kill_on_drop: false }`
[INFO] [stdout] cb3a8c09abe653a1f82405b89c3de68798d134a13603245ca6027c444ef36f04
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:1680c8fbd8dfb46fcd6d22e546df16ab0e007457dc29fcd9e987cdd5077fd1af" "/opt/rustwide/cargo-home/bin/cargo" "+b32fc44666c052e7cf07ab471bfb6f9ec571902f" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b01b769ea26c930d00d916ddfcfa2c2a87aa0b67619f99593fff7c059a379d41
[INFO] running `Command { std: "docker" "start" "-a" "b01b769ea26c930d00d916ddfcfa2c2a87aa0b67619f99593fff7c059a379d41", kill_on_drop: false }`
[INFO] [stderr]    Compiling num-traits v0.2.15
[INFO] [stderr]    Compiling num-integer v0.1.45
[INFO] [stderr]    Compiling num-rational v0.4.1
[INFO] [stderr]    Compiling num-iter v0.1.43
[INFO] [stderr]     Checking num-complex v0.4.3
[INFO] [stderr]     Checking num v0.4.0
[INFO] [stderr]     Checking rust_learn v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `content::base::cc`
[INFO] [stdout]  --> src/main.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use content::base::cc;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `rarray`, `rstruct`, `self`, `string`, and `tup`
[INFO] [stdout]  --> src/main.rs:2:26
[INFO] [stdout]   |
[INFO] [stdout] 2 | use content::composite::{self, rarray, rstruct, string, tup};
[INFO] [stdout]   |                          ^^^^  ^^^^^^  ^^^^^^^  ^^^^^^  ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `content::martch`
[INFO] [stdout]  --> src/main.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use content::martch;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::content::composite::rstruct::User`
[INFO] [stdout]  --> src/main.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use crate::content::composite::rstruct::User;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `concat`
[INFO] [stdout]   --> src/main.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 | use concat;
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `content::base::cc`
[INFO] [stdout]  --> src/main.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use content::base::cc;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `rarray`, `rstruct`, `self`, `string`, and `tup`
[INFO] [stdout]  --> src/main.rs:2:26
[INFO] [stdout]   |
[INFO] [stdout] 2 | use content::composite::{self, rarray, rstruct, string, tup};
[INFO] [stdout]   |                          ^^^^  ^^^^^^  ^^^^^^^  ^^^^^^  ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `content::martch`
[INFO] [stdout]  --> src/main.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use content::martch;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::content::composite::rstruct::User`
[INFO] [stdout]  --> src/main.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use crate::content::composite::rstruct::User;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `concat`
[INFO] [stdout]   --> src/main.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 | use concat;
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `hello`
[INFO] [stdout]  --> src/content/composite/string.rs:4:9
[INFO] [stdout]   |
[INFO] [stdout] 4 |     let hello = &s[0..5];
[INFO] [stdout]   |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_hello`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `world`
[INFO] [stdout]  --> src/content/composite/string.rs:8:9
[INFO] [stdout]   |
[INFO] [stdout] 8 |     let world = &s[6..11];
[INFO] [stdout]   |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_world`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]  --> src/content/composite/tup.rs:4:10
[INFO] [stdout]   |
[INFO] [stdout] 4 |     let (x, y, z) = tup;
[INFO] [stdout]   |          ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `z`
[INFO] [stdout]  --> src/content/composite/tup.rs:4:16
[INFO] [stdout]   |
[INFO] [stdout] 4 |     let (x, y, z) = tup;
[INFO] [stdout]   |                ^ help: if this is intentional, prefix it with an underscore: `_z`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `a`
[INFO] [stdout]  --> src/content/composite/rarray.rs:4:9
[INFO] [stdout]   |
[INFO] [stdout] 4 |     let a = [1, 2, 3, 4, 5];
[INFO] [stdout]   |         ^ help: if this is intentional, prefix it with an underscore: `_a`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]  --> src/content/composite/rarray.rs:5:52
[INFO] [stdout]   |
[INFO] [stdout] 5 |     let array: [String; 8] = core::array::from_fn(|i| String::from("rust is good!"));
[INFO] [stdout]   |                                                    ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `y`
[INFO] [stdout]  --> src/content/base/var.rs:3:9
[INFO] [stdout]   |
[INFO] [stdout] 3 |     let y = 5;
[INFO] [stdout]   |         ^ help: if this is intentional, prefix it with an underscore: `_y`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `x` is never read
[INFO] [stdout]  --> src/content/base/var.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 |     x = 6;
[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: `spaces`
[INFO] [stdout]   --> src/content/base/var.rs:60:9
[INFO] [stdout]    |
[INFO] [stdout] 60 |     let spaces = spaces.len();
[INFO] [stdout]    |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_spaces`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `c`
[INFO] [stdout]   --> src/content/base/cc.rs:25:9
[INFO] [stdout]    |
[INFO] [stdout] 25 |     let c = 'z';
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_c`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `z`
[INFO] [stdout]   --> src/content/base/cc.rs:26:9
[INFO] [stdout]    |
[INFO] [stdout] 26 |     let z = 'ℤ';
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_z`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `g`
[INFO] [stdout]   --> src/content/base/cc.rs:27:9
[INFO] [stdout]    |
[INFO] [stdout] 27 |     let g = '国';
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_g`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `hello`
[INFO] [stdout]  --> src/content/composite/string.rs:4:9
[INFO] [stdout]   |
[INFO] [stdout] 4 |     let hello = &s[0..5];
[INFO] [stdout]   |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_hello`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `v`
[INFO] [stdout]  --> src/content/contain/mod.rs:4:9
[INFO] [stdout]   |
[INFO] [stdout] 4 |     let v: Vec<i32> = Vec::new(); // new 创建并指定是数据类型 (泛型)
[INFO] [stdout]   |         ^ help: if this is intentional, prefix it with an underscore: `_v`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `world`
[INFO] [stdout]  --> src/content/composite/string.rs:8:9
[INFO] [stdout]   |
[INFO] [stdout] 8 |     let world = &s[6..11];
[INFO] [stdout]   |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_world`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]  --> src/content/composite/tup.rs:4:10
[INFO] [stdout]   |
[INFO] [stdout] 4 |     let (x, y, z) = tup;
[INFO] [stdout]   |          ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `z`
[INFO] [stdout]  --> src/content/composite/tup.rs:4:16
[INFO] [stdout]   |
[INFO] [stdout] 4 |     let (x, y, z) = tup;
[INFO] [stdout]   |                ^ help: if this is intentional, prefix it with an underscore: `_z`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]  --> src/content/contain/mod.rs:5:9
[INFO] [stdout]   |
[INFO] [stdout] 5 |     let mut v = vec![1, 2, 3]; // 宏创建
[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 `slice` is never used
[INFO] [stdout]  --> src/content/composite/string.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn slice() {
[INFO] [stdout]   |        ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `sdf` is never used
[INFO] [stdout]   --> src/content/composite/string.rs:15:8
[INFO] [stdout]    |
[INFO] [stdout] 15 | pub fn sdf() {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `first_word` is never used
[INFO] [stdout]   --> src/content/composite/string.rs:25:8
[INFO] [stdout]    |
[INFO] [stdout] 25 | pub fn first_word(s: &String) -> &str {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `operate` is never used
[INFO] [stdout]   --> src/content/composite/string.rs:38:8
[INFO] [stdout]    |
[INFO] [stdout] 38 | pub fn operate() {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `tup` is never used
[INFO] [stdout]  --> src/content/composite/tup.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn tup() {
[INFO] [stdout]   |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `returnStr` is never used
[INFO] [stdout]   --> src/content/composite/tup.rs:11:8
[INFO] [stdout]    |
[INFO] [stdout] 11 | pub fn returnStr() {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `calculate_length` is never used
[INFO] [stdout]   --> src/content/composite/tup.rs:19:4
[INFO] [stdout]    |
[INFO] [stdout] 19 | fn calculate_length(s: String) -> (String, usize) {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `create_array` is never used
[INFO] [stdout]  --> src/content/composite/rarray.rs:1:4
[INFO] [stdout]   |
[INFO] [stdout] 1 | fn create_array() {
[INFO] [stdout]   |    ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `array_test` is never used
[INFO] [stdout]  --> src/content/composite/rarray.rs:9:8
[INFO] [stdout]   |
[INFO] [stdout] 9 | pub fn array_test() {
[INFO] [stdout]   |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `add_with_extra` is never used
[INFO] [stdout]  --> src/content/base/fun.rs:1:4
[INFO] [stdout]   |
[INFO] [stdout] 1 | fn add_with_extra(x: i32, y: i32) -> i32 {
[INFO] [stdout]   |    ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `sss` is never used
[INFO] [stdout]  --> src/content/base/fun.rs:7:4
[INFO] [stdout]   |
[INFO] [stdout] 7 | fn sss() {
[INFO] [stdout]   |    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `add` is never used
[INFO] [stdout]   --> src/content/base/fun.rs:22:4
[INFO] [stdout]    |
[INFO] [stdout] 22 | fn add(i: i32, j: i32) -> i32 {
[INFO] [stdout]    |    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `dead_end` is never used
[INFO] [stdout]   --> src/content/base/fun.rs:28:4
[INFO] [stdout]    |
[INFO] [stdout] 28 | fn dead_end() -> ! {
[INFO] [stdout]    |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `var` is never used
[INFO] [stdout]  --> src/content/base/var.rs:1:4
[INFO] [stdout]   |
[INFO] [stdout] 1 | fn var() {
[INFO] [stdout]   |    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Struct` is never constructed
[INFO] [stdout]   --> src/content/base/var.rs:11:8
[INFO] [stdout]    |
[INFO] [stdout] 11 | struct Struct {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `variable_deconstruction` is never used
[INFO] [stdout]   --> src/content/base/var.rs:15:4
[INFO] [stdout]    |
[INFO] [stdout] 15 | fn variable_deconstruction() {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `constant` is never used
[INFO] [stdout]   --> src/content/base/var.rs:36:4
[INFO] [stdout]    |
[INFO] [stdout] 36 | fn constant() {
[INFO] [stdout]    |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `shadowing` is never used
[INFO] [stdout]   --> src/content/base/var.rs:41:4
[INFO] [stdout]    |
[INFO] [stdout] 41 | fn shadowing() {
[INFO] [stdout]    |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `range` is never used
[INFO] [stdout]  --> src/content/base/cc.rs:2:8
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub fn range() {
[INFO] [stdout]   |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `num_complex` is never used
[INFO] [stdout]   --> src/content/base/cc.rs:14:8
[INFO] [stdout]    |
[INFO] [stdout] 14 | pub fn num_complex() {
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `char` is never used
[INFO] [stdout]   --> src/content/base/cc.rs:24:8
[INFO] [stdout]    |
[INFO] [stdout] 24 | pub fn char() {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `report` is never used
[INFO] [stdout]   --> src/content/base/cc.rs:40:8
[INFO] [stdout]    |
[INFO] [stdout] 40 | pub fn report<T: std::fmt::Debug>(item: T) {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `a`
[INFO] [stdout]  --> src/content/composite/rarray.rs:4:9
[INFO] [stdout]   |
[INFO] [stdout] 4 |     let a = [1, 2, 3, 4, 5];
[INFO] [stdout]   |         ^ help: if this is intentional, prefix it with an underscore: `_a`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `clear` is never used
[INFO] [stdout]   --> src/content/base/cc.rs:44:8
[INFO] [stdout]    |
[INFO] [stdout] 44 | pub fn clear(text: &mut String) -> () {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Direction` is never used
[INFO] [stdout]  --> src/content/martch/mod.rs:4:10
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub enum Direction {
[INFO] [stdout]   |          ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main` is never used
[INFO] [stdout]   --> src/content/martch/mod.rs:11:8
[INFO] [stdout]    |
[INFO] [stdout] 11 | pub fn main() {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `value_in_direction` is never used
[INFO] [stdout]   --> src/content/martch/mod.rs:23:8
[INFO] [stdout]    |
[INFO] [stdout] 23 | pub fn value_in_direction(direction: Direction) -> u8 {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Action` is never used
[INFO] [stdout]   --> src/content/martch/mod.rs:47:6
[INFO] [stdout]    |
[INFO] [stdout] 47 | enum Action {
[INFO] [stdout]    |      ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `action_test` is never used
[INFO] [stdout]   --> src/content/martch/mod.rs:53:8
[INFO] [stdout]    |
[INFO] [stdout] 53 | pub fn action_test() {
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `asds` is never used
[INFO] [stdout]  --> src/content/martch/full.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn asds() {
[INFO] [stdout]   |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]  --> src/content/composite/rarray.rs:5:52
[INFO] [stdout]   |
[INFO] [stdout] 5 |     let array: [String; 8] = core::array::from_fn(|i| String::from("rust is good!"));
[INFO] [stdout]   |                                                    ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `area`, `new`, and `width` are never used
[INFO] [stdout]   --> src/content/rstruct/mod.rs:4:8
[INFO] [stdout]    |
[INFO] [stdout] 3  | impl method::Rectangle {
[INFO] [stdout]    | ---------------------- associated items in this implementation
[INFO] [stdout] 4  |     fn area(&self) -> u32 {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 10 |     pub fn new(width: u32, height: u32) -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 13 |     pub fn width(&self) -> u32 {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Message` is never used
[INFO] [stdout]   --> src/content/rstruct/mod.rs:24:6
[INFO] [stdout]    |
[INFO] [stdout] 24 | enum Message {
[INFO] [stdout]    |      ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `call` is never used
[INFO] [stdout]   --> src/content/rstruct/mod.rs:32:8
[INFO] [stdout]    |
[INFO] [stdout] 31 | impl Message {
[INFO] [stdout]    | ------------ method in this implementation
[INFO] [stdout] 32 |     fn call(&self) {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main` is never used
[INFO] [stdout]   --> src/content/rstruct/mod.rs:38:4
[INFO] [stdout]    |
[INFO] [stdout] 38 | fn main() {
[INFO] [stdout]    |    ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Rectangle` is never constructed
[INFO] [stdout]  --> src/content/rstruct/method.rs:3:12
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub struct Rectangle {
[INFO] [stdout]   |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `can_hold` is never used
[INFO] [stdout]   --> src/content/rstruct/method.rs:10:8
[INFO] [stdout]    |
[INFO] [stdout] 9  | impl Rectangle {
[INFO] [stdout]    | -------------- method in this implementation
[INFO] [stdout] 10 |     fn can_hold(&self, other: &Rectangle) -> bool {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `add` is never used
[INFO] [stdout]  --> src/content/generics/mod.rs:8:4
[INFO] [stdout]   |
[INFO] [stdout] 8 | fn add<T: std::ops::Add<Output=T>>(a: T, b: T) -> T {
[INFO] [stdout]   |    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Point` is never constructed
[INFO] [stdout]  --> src/content/generics/emue.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | struct Point<T> {
[INFO] [stdout]   |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `x` is never used
[INFO] [stdout]  --> src/content/generics/emue.rs:7:8
[INFO] [stdout]   |
[INFO] [stdout] 6 | impl<T> Point<T> {
[INFO] [stdout]   | ---------------- method in this implementation
[INFO] [stdout] 7 |     fn x(&self) -> &T {
[INFO] [stdout]   |        ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `distance_from_origin` is never used
[INFO] [stdout]   --> src/content/generics/emue.rs:14:8
[INFO] [stdout]    |
[INFO] [stdout] 13 | impl Point<f32> {
[INFO] [stdout]    | --------------- method in this implementation
[INFO] [stdout] 14 |     fn distance_from_origin(&self) -> f32 {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main` is never used
[INFO] [stdout]   --> src/content/generics/emue.rs:19:4
[INFO] [stdout]    |
[INFO] [stdout] 19 | fn main() {
[INFO] [stdout]    |    ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `display_array` is never used
[INFO] [stdout]  --> src/content/generics/rcont.rs:1:4
[INFO] [stdout]   |
[INFO] [stdout] 1 | fn display_array<T: std::fmt::Debug>(arr: &[T]) {
[INFO] [stdout]   |    ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `display_array2` is never used
[INFO] [stdout]  --> src/content/generics/rcont.rs:6:4
[INFO] [stdout]   |
[INFO] [stdout] 6 | fn display_array2<T: std::fmt::Debug, const N: usize>(arr: [T; N]) {
[INFO] [stdout]   |    ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main` is never used
[INFO] [stdout]  --> src/content/generics/rcont.rs:9:4
[INFO] [stdout]   |
[INFO] [stdout] 9 | fn main() {
[INFO] [stdout]   |    ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `returnStr` should have a snake case name
[INFO] [stdout]   --> src/content/composite/tup.rs:11:8
[INFO] [stdout]    |
[INFO] [stdout] 11 | pub fn returnStr() {
[INFO] [stdout]    |        ^^^^^^^^^ help: convert the identifier to snake case: `return_str`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `y`
[INFO] [stdout]  --> src/content/base/var.rs:3:9
[INFO] [stdout]   |
[INFO] [stdout] 3 |     let y = 5;
[INFO] [stdout]   |         ^ help: if this is intentional, prefix it with an underscore: `_y`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `x` is never read
[INFO] [stdout]  --> src/content/base/var.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 |     x = 6;
[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: `spaces`
[INFO] [stdout]   --> src/content/base/var.rs:60:9
[INFO] [stdout]    |
[INFO] [stdout] 60 |     let spaces = spaces.len();
[INFO] [stdout]    |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_spaces`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `c`
[INFO] [stdout]   --> src/content/base/cc.rs:25:9
[INFO] [stdout]    |
[INFO] [stdout] 25 |     let c = 'z';
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_c`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `z`
[INFO] [stdout]   --> src/content/base/cc.rs:26:9
[INFO] [stdout]    |
[INFO] [stdout] 26 |     let z = 'ℤ';
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_z`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `g`
[INFO] [stdout]   --> src/content/base/cc.rs:27:9
[INFO] [stdout]    |
[INFO] [stdout] 27 |     let g = '国';
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_g`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `v`
[INFO] [stdout]  --> src/content/contain/mod.rs:4:9
[INFO] [stdout]   |
[INFO] [stdout] 4 |     let v: Vec<i32> = Vec::new(); // new 创建并指定是数据类型 (泛型)
[INFO] [stdout]   |         ^ help: if this is intentional, prefix it with an underscore: `_v`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]  --> src/content/contain/mod.rs:5:9
[INFO] [stdout]   |
[INFO] [stdout] 5 |     let mut v = vec![1, 2, 3]; // 宏创建
[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 `slice` is never used
[INFO] [stdout]  --> src/content/composite/string.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn slice() {
[INFO] [stdout]   |        ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `sdf` is never used
[INFO] [stdout]   --> src/content/composite/string.rs:15:8
[INFO] [stdout]    |
[INFO] [stdout] 15 | pub fn sdf() {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `first_word` is never used
[INFO] [stdout]   --> src/content/composite/string.rs:25:8
[INFO] [stdout]    |
[INFO] [stdout] 25 | pub fn first_word(s: &String) -> &str {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `operate` is never used
[INFO] [stdout]   --> src/content/composite/string.rs:38:8
[INFO] [stdout]    |
[INFO] [stdout] 38 | pub fn operate() {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `tup` is never used
[INFO] [stdout]  --> src/content/composite/tup.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn tup() {
[INFO] [stdout]   |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `returnStr` is never used
[INFO] [stdout]   --> src/content/composite/tup.rs:11:8
[INFO] [stdout]    |
[INFO] [stdout] 11 | pub fn returnStr() {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `calculate_length` is never used
[INFO] [stdout]   --> src/content/composite/tup.rs:19:4
[INFO] [stdout]    |
[INFO] [stdout] 19 | fn calculate_length(s: String) -> (String, usize) {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `create_array` is never used
[INFO] [stdout]  --> src/content/composite/rarray.rs:1:4
[INFO] [stdout]   |
[INFO] [stdout] 1 | fn create_array() {
[INFO] [stdout]   |    ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `array_test` is never used
[INFO] [stdout]  --> src/content/composite/rarray.rs:9:8
[INFO] [stdout]   |
[INFO] [stdout] 9 | pub fn array_test() {
[INFO] [stdout]   |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `add_with_extra` is never used
[INFO] [stdout]  --> src/content/base/fun.rs:1:4
[INFO] [stdout]   |
[INFO] [stdout] 1 | fn add_with_extra(x: i32, y: i32) -> i32 {
[INFO] [stdout]   |    ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `sss` is never used
[INFO] [stdout]  --> src/content/base/fun.rs:7:4
[INFO] [stdout]   |
[INFO] [stdout] 7 | fn sss() {
[INFO] [stdout]   |    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `add` is never used
[INFO] [stdout]   --> src/content/base/fun.rs:22:4
[INFO] [stdout]    |
[INFO] [stdout] 22 | fn add(i: i32, j: i32) -> i32 {
[INFO] [stdout]    |    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `dead_end` is never used
[INFO] [stdout]   --> src/content/base/fun.rs:28:4
[INFO] [stdout]    |
[INFO] [stdout] 28 | fn dead_end() -> ! {
[INFO] [stdout]    |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `var` is never used
[INFO] [stdout]  --> src/content/base/var.rs:1:4
[INFO] [stdout]   |
[INFO] [stdout] 1 | fn var() {
[INFO] [stdout]   |    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Struct` is never constructed
[INFO] [stdout]   --> src/content/base/var.rs:11:8
[INFO] [stdout]    |
[INFO] [stdout] 11 | struct Struct {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `variable_deconstruction` is never used
[INFO] [stdout]   --> src/content/base/var.rs:15:4
[INFO] [stdout]    |
[INFO] [stdout] 15 | fn variable_deconstruction() {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `constant` is never used
[INFO] [stdout]   --> src/content/base/var.rs:36:4
[INFO] [stdout]    |
[INFO] [stdout] 36 | fn constant() {
[INFO] [stdout]    |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `shadowing` is never used
[INFO] [stdout]   --> src/content/base/var.rs:41:4
[INFO] [stdout]    |
[INFO] [stdout] 41 | fn shadowing() {
[INFO] [stdout]    |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `range` is never used
[INFO] [stdout]  --> src/content/base/cc.rs:2:8
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub fn range() {
[INFO] [stdout]   |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `num_complex` is never used
[INFO] [stdout]   --> src/content/base/cc.rs:14:8
[INFO] [stdout]    |
[INFO] [stdout] 14 | pub fn num_complex() {
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `char` is never used
[INFO] [stdout]   --> src/content/base/cc.rs:24:8
[INFO] [stdout]    |
[INFO] [stdout] 24 | pub fn char() {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `report` is never used
[INFO] [stdout]   --> src/content/base/cc.rs:40:8
[INFO] [stdout]    |
[INFO] [stdout] 40 | pub fn report<T: std::fmt::Debug>(item: T) {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `clear` is never used
[INFO] [stdout]   --> src/content/base/cc.rs:44:8
[INFO] [stdout]    |
[INFO] [stdout] 44 | pub fn clear(text: &mut String) -> () {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Direction` is never used
[INFO] [stdout]  --> src/content/martch/mod.rs:4:10
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub enum Direction {
[INFO] [stdout]   |          ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main` is never used
[INFO] [stdout]   --> src/content/martch/mod.rs:11:8
[INFO] [stdout]    |
[INFO] [stdout] 11 | pub fn main() {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `value_in_direction` is never used
[INFO] [stdout]   --> src/content/martch/mod.rs:23:8
[INFO] [stdout]    |
[INFO] [stdout] 23 | pub fn value_in_direction(direction: Direction) -> u8 {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Action` is never used
[INFO] [stdout]   --> src/content/martch/mod.rs:47:6
[INFO] [stdout]    |
[INFO] [stdout] 47 | enum Action {
[INFO] [stdout]    |      ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `action_test` is never used
[INFO] [stdout]   --> src/content/martch/mod.rs:53:8
[INFO] [stdout]    |
[INFO] [stdout] 53 | pub fn action_test() {
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `asds` is never used
[INFO] [stdout]  --> src/content/martch/full.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn asds() {
[INFO] [stdout]   |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `area`, `new`, and `width` are never used
[INFO] [stdout]   --> src/content/rstruct/mod.rs:4:8
[INFO] [stdout]    |
[INFO] [stdout] 3  | impl method::Rectangle {
[INFO] [stdout]    | ---------------------- associated items in this implementation
[INFO] [stdout] 4  |     fn area(&self) -> u32 {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 10 |     pub fn new(width: u32, height: u32) -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 13 |     pub fn width(&self) -> u32 {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Message` is never used
[INFO] [stdout]   --> src/content/rstruct/mod.rs:24:6
[INFO] [stdout]    |
[INFO] [stdout] 24 | enum Message {
[INFO] [stdout]    |      ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `call` is never used
[INFO] [stdout]   --> src/content/rstruct/mod.rs:32:8
[INFO] [stdout]    |
[INFO] [stdout] 31 | impl Message {
[INFO] [stdout]    | ------------ method in this implementation
[INFO] [stdout] 32 |     fn call(&self) {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main` is never used
[INFO] [stdout]   --> src/content/rstruct/mod.rs:38:4
[INFO] [stdout]    |
[INFO] [stdout] 38 | fn main() {
[INFO] [stdout]    |    ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Rectangle` is never constructed
[INFO] [stdout]  --> src/content/rstruct/method.rs:3:12
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub struct Rectangle {
[INFO] [stdout]   |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `can_hold` is never used
[INFO] [stdout]   --> src/content/rstruct/method.rs:10:8
[INFO] [stdout]    |
[INFO] [stdout] 9  | impl Rectangle {
[INFO] [stdout]    | -------------- method in this implementation
[INFO] [stdout] 10 |     fn can_hold(&self, other: &Rectangle) -> bool {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `add` is never used
[INFO] [stdout]  --> src/content/generics/mod.rs:8:4
[INFO] [stdout]   |
[INFO] [stdout] 8 | fn add<T: std::ops::Add<Output=T>>(a: T, b: T) -> T {
[INFO] [stdout]   |    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Point` is never constructed
[INFO] [stdout]  --> src/content/generics/emue.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | struct Point<T> {
[INFO] [stdout]   |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `x` is never used
[INFO] [stdout]  --> src/content/generics/emue.rs:7:8
[INFO] [stdout]   |
[INFO] [stdout] 6 | impl<T> Point<T> {
[INFO] [stdout]   | ---------------- method in this implementation
[INFO] [stdout] 7 |     fn x(&self) -> &T {
[INFO] [stdout]   |        ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `distance_from_origin` is never used
[INFO] [stdout]   --> src/content/generics/emue.rs:14:8
[INFO] [stdout]    |
[INFO] [stdout] 13 | impl Point<f32> {
[INFO] [stdout]    | --------------- method in this implementation
[INFO] [stdout] 14 |     fn distance_from_origin(&self) -> f32 {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main` is never used
[INFO] [stdout]   --> src/content/generics/emue.rs:19:4
[INFO] [stdout]    |
[INFO] [stdout] 19 | fn main() {
[INFO] [stdout]    |    ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `display_array` is never used
[INFO] [stdout]  --> src/content/generics/rcont.rs:1:4
[INFO] [stdout]   |
[INFO] [stdout] 1 | fn display_array<T: std::fmt::Debug>(arr: &[T]) {
[INFO] [stdout]   |    ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `display_array2` is never used
[INFO] [stdout]  --> src/content/generics/rcont.rs:6:4
[INFO] [stdout]   |
[INFO] [stdout] 6 | fn display_array2<T: std::fmt::Debug, const N: usize>(arr: [T; N]) {
[INFO] [stdout]   |    ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main` is never used
[INFO] [stdout]  --> src/content/generics/rcont.rs:9:4
[INFO] [stdout]   |
[INFO] [stdout] 9 | fn main() {
[INFO] [stdout]   |    ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `returnStr` should have a snake case name
[INFO] [stdout]   --> src/content/composite/tup.rs:11:8
[INFO] [stdout]    |
[INFO] [stdout] 11 | pub fn returnStr() {
[INFO] [stdout]    |        ^^^^^^^^^ help: convert the identifier to snake case: `return_str`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.01s
[INFO] running `Command { std: "docker" "inspect" "b01b769ea26c930d00d916ddfcfa2c2a87aa0b67619f99593fff7c059a379d41", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b01b769ea26c930d00d916ddfcfa2c2a87aa0b67619f99593fff7c059a379d41", kill_on_drop: false }`
[INFO] [stdout] b01b769ea26c930d00d916ddfcfa2c2a87aa0b67619f99593fff7c059a379d41