[INFO] cloning repository https://github.com/kyssion/rust_study
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/kyssion/rust_study" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkyssion%2Frust_study", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkyssion%2Frust_study'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 8140f82dc954b4717605b2c11a81508ed355b93c
[INFO] checking kyssion/rust_study against master#a609fb45efad59dfd459c76e50899be9f0583b5a for pr-80579
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkyssion%2Frust_study" "/workspace/builds/worker-3/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/kyssion/rust_study on toolchain a609fb45efad59dfd459c76e50899be9f0583b5a
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/kyssion/rust_study
[INFO] finished tweaking git repo https://github.com/kyssion/rust_study
[INFO] tweaked toml for git repo https://github.com/kyssion/rust_study written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] crate git repo https://github.com/kyssion/rust_study already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] b5ffd6225f20763c3b69dbf75affc9d5aad392682d163459b058cbe7d0e6ad83
[INFO] running `Command { std: "docker" "start" "-a" "b5ffd6225f20763c3b69dbf75affc9d5aad392682d163459b058cbe7d0e6ad83", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b5ffd6225f20763c3b69dbf75affc9d5aad392682d163459b058cbe7d0e6ad83", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b5ffd6225f20763c3b69dbf75affc9d5aad392682d163459b058cbe7d0e6ad83", kill_on_drop: false }`
[INFO] [stdout] b5ffd6225f20763c3b69dbf75affc9d5aad392682d163459b058cbe7d0e6ad83
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5ede597306c18b523625bf2ea6c8382e0e62f14956db72f523092df70add90db
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "5ede597306c18b523625bf2ea6c8382e0e62f14956db72f523092df70add90db", kill_on_drop: false }`
[INFO] [stderr]     Checking rand_core v0.4.2
[INFO] [stderr]    Compiling autocfg v0.1.7
[INFO] [stderr]     Checking rand_core v0.3.1
[INFO] [stderr]     Checking rand_jitter v0.1.4
[INFO] [stderr]     Checking rand_os v0.1.3
[INFO] [stderr]     Checking rand_xorshift v0.1.1
[INFO] [stderr]     Checking rand_hc v0.1.0
[INFO] [stderr]     Checking rand_isaac v0.1.1
[INFO] [stderr]    Compiling rand_chacha v0.1.1
[INFO] [stderr]    Compiling rand_pcg v0.1.2
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]     Checking rust_study v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `test_match`
[INFO] [stdout]  --> src/main.rs:1:38
[INFO] [stdout]   |
[INFO] [stdout] 1 | use crate::rust0004_enum_and_match::{test_match, Coin};
[INFO] [stdout]   |                                      ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::convert::TryInto`
[INFO] [stdout]  --> src/main.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::convert::TryInto;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `if` condition
[INFO] [stdout]   --> src/rust0001_var_and_control_flow.rs:70:15
[INFO] [stdout]    |
[INFO] [stdout] 70 |     let i = if(i>3){
[INFO] [stdout]    |               ^^^^^ help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `iter::Sum`
[INFO] [stdout]  --> src/rust0000_official_example.rs:2:26
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::{cmp::Ordering, iter::Sum};
[INFO] [stdout]   |                          ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::borrow::Borrow`
[INFO] [stdout]  --> src/rust0004_enum_and_match.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::borrow::Borrow;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::convert::TryInto`
[INFO] [stdout]  --> src/rust0004_enum_and_match.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::convert::TryInto;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `NO_MESSAGE` should have an upper camel case name
[INFO] [stdout]   --> src/rust0004_enum_and_match.rs:22:5
[INFO] [stdout]    |
[INFO] [stdout] 22 |     NO_MESSAGE(),
[INFO] [stdout]    |     ^^^^^^^^^^ help: convert the identifier to upper camel case: `NoMessage`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_camel_case_types)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `INT_MESSAGE` should have an upper camel case name
[INFO] [stdout]   --> src/rust0004_enum_and_match.rs:23:5
[INFO] [stdout]    |
[INFO] [stdout] 23 |     INT_MESSAGE(i32,i32),
[INFO] [stdout]    |     ^^^^^^^^^^^ help: convert the identifier to upper camel case: `IntMessage`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `STR_MESSAGE` should have an upper camel case name
[INFO] [stdout]   --> src/rust0004_enum_and_match.rs:24:5
[INFO] [stdout]    |
[INFO] [stdout] 24 |     STR_MESSAGE(String,String,String),
[INFO] [stdout]    |     ^^^^^^^^^^^ help: convert the identifier to upper camel case: `StrMessage`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `FLOAT_MESSAGE` should have an upper camel case name
[INFO] [stdout]   --> src/rust0004_enum_and_match.rs:25:5
[INFO] [stdout]    |
[INFO] [stdout] 25 |     FLOAT_MESSAGE(f32,f64),
[INFO] [stdout]    |     ^^^^^^^^^^^^^ help: convert the identifier to upper camel case: `FloatMessage`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `STRUCT_MESSAGE` should have an upper camel case name
[INFO] [stdout]   --> src/rust0004_enum_and_match.rs:26:5
[INFO] [stdout]    |
[INFO] [stdout] 26 |     STRUCT_MESSAGE(TestStruct), //todo 结构体元组
[INFO] [stdout]    |     ^^^^^^^^^^^^^^ help: convert the identifier to upper camel case: `StructMessage`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `DEFAULT_MESSAGE` should have an upper camel case name
[INFO] [stdout]   --> src/rust0004_enum_and_match.rs:27:5
[INFO] [stdout]    |
[INFO] [stdout] 27 |     DEFAULT_MESSAGE{item_int:i32} //直接定义对象
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^ help: convert the identifier to upper camel case: `DefaultMessage`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `test_match`
[INFO] [stdout]  --> src/main.rs:1:38
[INFO] [stdout]   |
[INFO] [stdout] 1 | use crate::rust0004_enum_and_match::{test_match, Coin};
[INFO] [stdout]   |                                      ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::convert::TryInto`
[INFO] [stdout]  --> src/main.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::convert::TryInto;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `if` condition
[INFO] [stdout]   --> src/rust0001_var_and_control_flow.rs:70:15
[INFO] [stdout]    |
[INFO] [stdout] 70 |     let i = if(i>3){
[INFO] [stdout]    |               ^^^^^ help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `iter::Sum`
[INFO] [stdout]  --> src/rust0000_official_example.rs:2:26
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::{cmp::Ordering, iter::Sum};
[INFO] [stdout]   |                          ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::borrow::Borrow`
[INFO] [stdout]  --> src/rust0004_enum_and_match.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::borrow::Borrow;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::convert::TryInto`
[INFO] [stdout]  --> src/rust0004_enum_and_match.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::convert::TryInto;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `NO_MESSAGE` should have an upper camel case name
[INFO] [stdout]   --> src/rust0004_enum_and_match.rs:22:5
[INFO] [stdout]    |
[INFO] [stdout] 22 |     NO_MESSAGE(),
[INFO] [stdout]    |     ^^^^^^^^^^ help: convert the identifier to upper camel case: `NoMessage`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_camel_case_types)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `INT_MESSAGE` should have an upper camel case name
[INFO] [stdout]   --> src/rust0004_enum_and_match.rs:23:5
[INFO] [stdout]    |
[INFO] [stdout] 23 |     INT_MESSAGE(i32,i32),
[INFO] [stdout]    |     ^^^^^^^^^^^ help: convert the identifier to upper camel case: `IntMessage`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `STR_MESSAGE` should have an upper camel case name
[INFO] [stdout]   --> src/rust0004_enum_and_match.rs:24:5
[INFO] [stdout]    |
[INFO] [stdout] 24 |     STR_MESSAGE(String,String,String),
[INFO] [stdout]    |     ^^^^^^^^^^^ help: convert the identifier to upper camel case: `StrMessage`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `FLOAT_MESSAGE` should have an upper camel case name
[INFO] [stdout]   --> src/rust0004_enum_and_match.rs:25:5
[INFO] [stdout]    |
[INFO] [stdout] 25 |     FLOAT_MESSAGE(f32,f64),
[INFO] [stdout]    |     ^^^^^^^^^^^^^ help: convert the identifier to upper camel case: `FloatMessage`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `STRUCT_MESSAGE` should have an upper camel case name
[INFO] [stdout]   --> src/rust0004_enum_and_match.rs:26:5
[INFO] [stdout]    |
[INFO] [stdout] 26 |     STRUCT_MESSAGE(TestStruct), //todo 结构体元组
[INFO] [stdout]    |     ^^^^^^^^^^^^^^ help: convert the identifier to upper camel case: `StructMessage`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `DEFAULT_MESSAGE` should have an upper camel case name
[INFO] [stdout]   --> src/rust0004_enum_and_match.rs:27:5
[INFO] [stdout]    |
[INFO] [stdout] 27 |     DEFAULT_MESSAGE{item_int:i32} //直接定义对象
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^ help: convert the identifier to upper camel case: `DefaultMessage`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning[E0170]: pattern binding `Penny` is named the same as one of the variants of the type `Coin`
[INFO] [stdout]   --> src/rust0004_enum_and_match.rs:71:9
[INFO] [stdout]    |
[INFO] [stdout] 71 |         Penny => { //支持括号模式
[INFO] [stdout]    |         ^^^^^ help: to match on the variant, qualify the path: `Coin::Penny`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bindings_with_variant_name)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning[E0170]: pattern binding `Nickel` is named the same as one of the variants of the type `Coin`
[INFO] [stdout]   --> src/rust0004_enum_and_match.rs:75:9
[INFO] [stdout]    |
[INFO] [stdout] 75 |         Nickel=>12,
[INFO] [stdout]    |         ^^^^^^ help: to match on the variant, qualify the path: `Coin::Nickel`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning[E0170]: pattern binding `Dime` is named the same as one of the variants of the type `Coin`
[INFO] [stdout]   --> src/rust0004_enum_and_match.rs:76:9
[INFO] [stdout]    |
[INFO] [stdout] 76 |         Dime=>33,
[INFO] [stdout]    |         ^^^^ help: to match on the variant, qualify the path: `Coin::Dime`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]   --> src/rust0004_enum_and_match.rs:75:9
[INFO] [stdout]    |
[INFO] [stdout] 71 |         Penny => { //支持括号模式
[INFO] [stdout]    |         ----- matches any value
[INFO] [stdout] ...
[INFO] [stdout] 75 |         Nickel=>12,
[INFO] [stdout]    |         ^^^^^^ unreachable pattern
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unreachable_patterns)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]   --> src/rust0004_enum_and_match.rs:76:9
[INFO] [stdout]    |
[INFO] [stdout] 71 |         Penny => { //支持括号模式
[INFO] [stdout]    |         ----- matches any value
[INFO] [stdout] ...
[INFO] [stdout] 76 |         Dime=>33,
[INFO] [stdout]    |         ^^^^ unreachable pattern
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]   --> src/rust0004_enum_and_match.rs:77:9
[INFO] [stdout]    |
[INFO] [stdout] 71 |         Penny => { //支持括号模式
[INFO] [stdout]    |         ----- matches any value
[INFO] [stdout] ...
[INFO] [stdout] 77 |         Coin::Quarter(one,tow)=>{
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^ unreachable pattern
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]   --> src/rust0004_enum_and_match.rs:81:9
[INFO] [stdout]    |
[INFO] [stdout] 71 |         Penny => { //支持括号模式
[INFO] [stdout]    |         ----- matches any value
[INFO] [stdout] ...
[INFO] [stdout] 81 |         _ =>{ //todo　使用通配符_ 可以匹配其他未知情况
[INFO] [stdout]    |         ^ unreachable pattern
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `value1`
[INFO] [stdout]  --> src/rust0001_var_and_control_flow.rs:3:9
[INFO] [stdout]   |
[INFO] [stdout] 3 |     let value1 = 10;
[INFO] [stdout]   |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_value1`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `value1`
[INFO] [stdout]  --> src/rust0001_var_and_control_flow.rs:4:9
[INFO] [stdout]   |
[INFO] [stdout] 4 |     let value1 = "sdfsdf";
[INFO] [stdout]   |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_value1`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `value2` is assigned to, but never used
[INFO] [stdout]  --> src/rust0001_var_and_control_flow.rs:5:9
[INFO] [stdout]   |
[INFO] [stdout] 5 |     let mut value2 = 10;
[INFO] [stdout]   |         ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: consider using `_value2` instead
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `value2` is never read
[INFO] [stdout]  --> src/rust0001_var_and_control_flow.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 |     value2 = 11; // 可以进行修改
[INFO] [stdout]   |     ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout]   = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]   --> src/rust0001_var_and_control_flow.rs:19:9
[INFO] [stdout]    |
[INFO] [stdout] 19 |     let i: i8;
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]   --> src/rust0001_var_and_control_flow.rs:20:9
[INFO] [stdout]    |
[INFO] [stdout] 20 |     let i: i16;
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]   --> src/rust0001_var_and_control_flow.rs:21:9
[INFO] [stdout]    |
[INFO] [stdout] 21 |     let i: i32;
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]   --> src/rust0001_var_and_control_flow.rs:22:9
[INFO] [stdout]    |
[INFO] [stdout] 22 |     let i: i64;
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]   --> src/rust0001_var_and_control_flow.rs:23:9
[INFO] [stdout]    |
[INFO] [stdout] 23 |     let i: i128;
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]   --> src/rust0001_var_and_control_flow.rs:24:9
[INFO] [stdout]    |
[INFO] [stdout] 24 |     let i: usize;
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `f`
[INFO] [stdout]   --> src/rust0001_var_and_control_flow.rs:29:9
[INFO] [stdout]    |
[INFO] [stdout] 29 |     let f:f32;
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_f`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `f`
[INFO] [stdout]   --> src/rust0001_var_and_control_flow.rs:30:9
[INFO] [stdout]    |
[INFO] [stdout] 30 |     let f:f64;
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_f`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `b`
[INFO] [stdout]   --> src/rust0001_var_and_control_flow.rs:33:9
[INFO] [stdout]    |
[INFO] [stdout] 33 |     let b:bool = false;
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_b`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `b`
[INFO] [stdout]   --> src/rust0001_var_and_control_flow.rs:34:9
[INFO] [stdout]    |
[INFO] [stdout] 34 |     let b : bool = true;
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_b`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `c`
[INFO] [stdout]   --> src/rust0001_var_and_control_flow.rs:37:9
[INFO] [stdout]    |
[INFO] [stdout] 37 |     let c : char = '总';
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_c`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `a`
[INFO] [stdout]   --> src/rust0001_var_and_control_flow.rs:43:10
[INFO] [stdout]    |
[INFO] [stdout] 43 |     let (a,b,_) = y; // rust 这里和golang的处理方法类似使用_ 来丢弃不用的值
[INFO] [stdout]    |          ^ help: if this is intentional, prefix it with an underscore: `_a`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `b`
[INFO] [stdout]   --> src/rust0001_var_and_control_flow.rs:43:12
[INFO] [stdout]    |
[INFO] [stdout] 43 |     let (a,b,_) = y; // rust 这里和golang的处理方法类似使用_ 来丢弃不用的值
[INFO] [stdout]    |            ^ help: if this is intentional, prefix it with an underscore: `_b`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `c`
[INFO] [stdout]   --> src/rust0001_var_and_control_flow.rs:45:9
[INFO] [stdout]    |
[INFO] [stdout] 45 |     let c = y.1;// 元组可以使用的后缀+ 数字来确定标记位置
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_c`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `a`
[INFO] [stdout]   --> src/rust0001_var_and_control_flow.rs:48:9
[INFO] [stdout]    |
[INFO] [stdout] 48 |     let a = [1,2,3,4,5,6]; // 数组初始化
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_a`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `b`
[INFO] [stdout]   --> src/rust0001_var_and_control_flow.rs:49:9
[INFO] [stdout]    |
[INFO] [stdout] 49 |     let b : [i32; 10]; // 初始化声明数组
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_b`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `str`
[INFO] [stdout]   --> src/rust0001_var_and_control_flow.rs:53:9
[INFO] [stdout]    |
[INFO] [stdout] 53 |     let str = "&str"; // 这个是字符串字面量，不能进行修改
[INFO] [stdout]    |         ^^^ help: if this is intentional, prefix it with an underscore: `_str`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `str`
[INFO] [stdout]   --> src/rust0001_var_and_control_flow.rs:54:9
[INFO] [stdout]    |
[INFO] [stdout] 54 |     let str = String::from("String"); //堆分配字符串
[INFO] [stdout]    |         ^^^ help: if this is intentional, prefix it with an underscore: `_str`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]   --> src/rust0001_var_and_control_flow.rs:61:9
[INFO] [stdout]    |
[INFO] [stdout] 61 |     let i = 123;// 赋值语句是语句不是表达式 所以不能想其他语言一样使用 a=b=12 这种方法赋值
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]   --> src/rust0001_var_and_control_flow.rs:70:9
[INFO] [stdout]    |
[INFO] [stdout] 70 |     let i = if(i>3){
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `item`
[INFO] [stdout]   --> src/rust0001_var_and_control_flow.rs:78:9
[INFO] [stdout]    |
[INFO] [stdout] 78 |     let item = loop{
[INFO] [stdout]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_item`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]   --> src/rust0001_var_and_control_flow.rs:84:18
[INFO] [stdout]    |
[INFO] [stdout] 84 | pub fn func_test(i : i32)-> String{
[INFO] [stdout]    |                  ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `a`
[INFO] [stdout]    --> src/rust0001_var_and_control_flow.rs:103:9
[INFO] [stdout]     |
[INFO] [stdout] 103 |     let a = if number<5{
[INFO] [stdout]     |         ^ help: if this is intentional, prefix it with an underscore: `_a`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `item`
[INFO] [stdout]    --> src/rust0001_var_and_control_flow.rs:120:9
[INFO] [stdout]     |
[INFO] [stdout] 120 |     let item = loop{
[INFO] [stdout]     |         ^^^^ help: if this is intentional, prefix it with an underscore: `_item`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `a`
[INFO] [stdout]    --> src/rust0001_var_and_control_flow.rs:126:9
[INFO] [stdout]     |
[INFO] [stdout] 126 |     let a = while  number<5 {
[INFO] [stdout]     |         ^ help: if this is intentional, prefix it with an underscore: `_a`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `item`
[INFO] [stdout]   --> src/rust0000_official_example.rs:40:15
[INFO] [stdout]    |
[INFO] [stdout] 40 | pub fn notify(item: impl Summary){}
[INFO] [stdout]    |               ^^^^ help: if this is intentional, prefix it with an underscore: `_item`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `str`
[INFO] [stdout]   --> src/rust0002_ownership.rs:11:9
[INFO] [stdout]    |
[INFO] [stdout] 11 |     let mut str = "str item";
[INFO] [stdout]    |         ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_str`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `j`
[INFO] [stdout]   --> src/rust0002_ownership.rs:16:9
[INFO] [stdout]    |
[INFO] [stdout] 16 |     let j = i;
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_j`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `v`
[INFO] [stdout]   --> src/rust0002_ownership.rs:20:9
[INFO] [stdout]    |
[INFO] [stdout] 20 |     let v = j.clone();//使用clone 可以获取一个string字符串的clone
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_v`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `s`
[INFO] [stdout]   --> src/rust0002_ownership.rs:28:9
[INFO] [stdout]    |
[INFO] [stdout] 28 |     let s = test_fn(s);// 此时S已经没有任何作用域的信息
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_s`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `z`
[INFO] [stdout]   --> src/rust0002_ownership.rs:32:9
[INFO] [stdout]    |
[INFO] [stdout] 32 |     let z = &i;  //  获取这个值的引用
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_z`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `j`
[INFO] [stdout]   --> src/rust0002_ownership.rs:52:9
[INFO] [stdout]    |
[INFO] [stdout] 52 |     let j = &mut i;
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_j`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `itemStr`
[INFO] [stdout]   --> src/rust0002_ownership.rs:61:9
[INFO] [stdout]    |
[INFO] [stdout] 61 |     let itemStr = &str[0..1];
[INFO] [stdout]    |         ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_itemStr`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `user`
[INFO] [stdout]   --> src/rust0003_struct_1.rs:31:9
[INFO] [stdout]    |
[INFO] [stdout] 31 |     let mut user = User{
[INFO] [stdout]    |         ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_user`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]   --> src/rust0003_struct_1.rs:38:9
[INFO] [stdout]    |
[INFO] [stdout] 38 |     let i = item_y.0;
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning[E0170]: pattern binding `Penny` is named the same as one of the variants of the type `Coin`
[INFO] [stdout]   --> src/rust0004_enum_and_match.rs:71:9
[INFO] [stdout]    |
[INFO] [stdout] 71 |         Penny => { //支持括号模式
[INFO] [stdout]    |         ^^^^^ help: to match on the variant, qualify the path: `Coin::Penny`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bindings_with_variant_name)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `area`
[INFO] [stdout]   --> src/rust0003_struct_1.rs:71:9
[INFO] [stdout]    |
[INFO] [stdout] 71 |     let area = area(&rect1);
[INFO] [stdout]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_area`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `area`
[INFO] [stdout]   --> src/rust0003_struct_2.rs:49:9
[INFO] [stdout]    |
[INFO] [stdout] 49 |     let area = area(&rect1);
[INFO] [stdout]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_area`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning[E0170]: pattern binding `Nickel` is named the same as one of the variants of the type `Coin`
[INFO] [stdout]   --> src/rust0004_enum_and_match.rs:75:9
[INFO] [stdout]    |
[INFO] [stdout] 75 |         Nickel=>12,
[INFO] [stdout]    |         ^^^^^^ help: to match on the variant, qualify the path: `Coin::Nickel`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `p`
[INFO] [stdout]   --> src/rust0003_struct_2.rs:57:9
[INFO] [stdout]    |
[INFO] [stdout] 57 |     let p =Rectangle::square(12);
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_p`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `four`
[INFO] [stdout]   --> src/rust0004_enum_and_match.rs:42:9
[INFO] [stdout]    |
[INFO] [stdout] 42 |     let four = IpAddrKind::V4;
[INFO] [stdout]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_four`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning[E0170]: pattern binding `Dime` is named the same as one of the variants of the type `Coin`
[INFO] [stdout]   --> src/rust0004_enum_and_match.rs:76:9
[INFO] [stdout]    |
[INFO] [stdout] 76 |         Dime=>33,
[INFO] [stdout]    |         ^^^^ help: to match on the variant, qualify the path: `Coin::Dime`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `six`
[INFO] [stdout]   --> src/rust0004_enum_and_match.rs:43:9
[INFO] [stdout]    |
[INFO] [stdout] 43 |     let six = IpAddrKind::V6;
[INFO] [stdout]    |         ^^^ help: if this is intentional, prefix it with an underscore: `_six`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]   --> src/rust0004_enum_and_match.rs:75:9
[INFO] [stdout]    |
[INFO] [stdout] 71 |         Penny => { //支持括号模式
[INFO] [stdout]    |         ----- matches any value
[INFO] [stdout] ...
[INFO] [stdout] 75 |         Nickel=>12,
[INFO] [stdout]    |         ^^^^^^ unreachable pattern
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unreachable_patterns)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]   --> src/rust0004_enum_and_match.rs:76:9
[INFO] [stdout]    |
[INFO] [stdout] 71 |         Penny => { //支持括号模式
[INFO] [stdout]    |         ----- matches any value
[INFO] [stdout] ...
[INFO] [stdout] 76 |         Dime=>33,
[INFO] [stdout]    |         ^^^^ unreachable pattern
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]   --> src/rust0004_enum_and_match.rs:77:9
[INFO] [stdout]    |
[INFO] [stdout] 71 |         Penny => { //支持括号模式
[INFO] [stdout]    |         ----- matches any value
[INFO] [stdout] ...
[INFO] [stdout] 77 |         Coin::Quarter(one,tow)=>{
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^ unreachable pattern
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]   --> src/rust0004_enum_and_match.rs:81:9
[INFO] [stdout]    |
[INFO] [stdout] 71 |         Penny => { //支持括号模式
[INFO] [stdout]    |         ----- matches any value
[INFO] [stdout] ...
[INFO] [stdout] 81 |         _ =>{ //todo　使用通配符_ 可以匹配其他未知情况
[INFO] [stdout]    |         ^ unreachable pattern
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `value1`
[INFO] [stdout]  --> src/rust0001_var_and_control_flow.rs:3:9
[INFO] [stdout]   |
[INFO] [stdout] 3 |     let value1 = 10;
[INFO] [stdout]   |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_value1`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `value1`
[INFO] [stdout]  --> src/rust0001_var_and_control_flow.rs:4:9
[INFO] [stdout]   |
[INFO] [stdout] 4 |     let value1 = "sdfsdf";
[INFO] [stdout]   |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_value1`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `value2` is assigned to, but never used
[INFO] [stdout]  --> src/rust0001_var_and_control_flow.rs:5:9
[INFO] [stdout]   |
[INFO] [stdout] 5 |     let mut value2 = 10;
[INFO] [stdout]   |         ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: consider using `_value2` instead
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `value2` is never read
[INFO] [stdout]  --> src/rust0001_var_and_control_flow.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 |     value2 = 11; // 可以进行修改
[INFO] [stdout]   |     ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout]   = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]   --> src/rust0001_var_and_control_flow.rs:19:9
[INFO] [stdout]    |
[INFO] [stdout] 19 |     let i: i8;
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]   --> src/rust0001_var_and_control_flow.rs:20:9
[INFO] [stdout]    |
[INFO] [stdout] 20 |     let i: i16;
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]   --> src/rust0001_var_and_control_flow.rs:21:9
[INFO] [stdout]    |
[INFO] [stdout] 21 |     let i: i32;
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]   --> src/rust0001_var_and_control_flow.rs:22:9
[INFO] [stdout]    |
[INFO] [stdout] 22 |     let i: i64;
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]   --> src/rust0001_var_and_control_flow.rs:23:9
[INFO] [stdout]    |
[INFO] [stdout] 23 |     let i: i128;
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]   --> src/rust0001_var_and_control_flow.rs:24:9
[INFO] [stdout]    |
[INFO] [stdout] 24 |     let i: usize;
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `f`
[INFO] [stdout]   --> src/rust0001_var_and_control_flow.rs:29:9
[INFO] [stdout]    |
[INFO] [stdout] 29 |     let f:f32;
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_f`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `f`
[INFO] [stdout]   --> src/rust0001_var_and_control_flow.rs:30:9
[INFO] [stdout]    |
[INFO] [stdout] 30 |     let f:f64;
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_f`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `b`
[INFO] [stdout]   --> src/rust0001_var_and_control_flow.rs:33:9
[INFO] [stdout]    |
[INFO] [stdout] 33 |     let b:bool = false;
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_b`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `b`
[INFO] [stdout]   --> src/rust0001_var_and_control_flow.rs:34:9
[INFO] [stdout]    |
[INFO] [stdout] 34 |     let b : bool = true;
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_b`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `c`
[INFO] [stdout]   --> src/rust0001_var_and_control_flow.rs:37:9
[INFO] [stdout]    |
[INFO] [stdout] 37 |     let c : char = '总';
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_c`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `a`
[INFO] [stdout]   --> src/rust0001_var_and_control_flow.rs:43:10
[INFO] [stdout]    |
[INFO] [stdout] 43 |     let (a,b,_) = y; // rust 这里和golang的处理方法类似使用_ 来丢弃不用的值
[INFO] [stdout]    |          ^ help: if this is intentional, prefix it with an underscore: `_a`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `b`
[INFO] [stdout]   --> src/rust0001_var_and_control_flow.rs:43:12
[INFO] [stdout]    |
[INFO] [stdout] 43 |     let (a,b,_) = y; // rust 这里和golang的处理方法类似使用_ 来丢弃不用的值
[INFO] [stdout]    |            ^ help: if this is intentional, prefix it with an underscore: `_b`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `c`
[INFO] [stdout]   --> src/rust0001_var_and_control_flow.rs:45:9
[INFO] [stdout]    |
[INFO] [stdout] 45 |     let c = y.1;// 元组可以使用的后缀+ 数字来确定标记位置
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_c`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `a`
[INFO] [stdout]   --> src/rust0001_var_and_control_flow.rs:48:9
[INFO] [stdout]    |
[INFO] [stdout] 48 |     let a = [1,2,3,4,5,6]; // 数组初始化
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_a`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `b`
[INFO] [stdout]   --> src/rust0001_var_and_control_flow.rs:49:9
[INFO] [stdout]    |
[INFO] [stdout] 49 |     let b : [i32; 10]; // 初始化声明数组
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_b`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `str`
[INFO] [stdout]   --> src/rust0001_var_and_control_flow.rs:53:9
[INFO] [stdout]    |
[INFO] [stdout] 53 |     let str = "&str"; // 这个是字符串字面量，不能进行修改
[INFO] [stdout]    |         ^^^ help: if this is intentional, prefix it with an underscore: `_str`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `str`
[INFO] [stdout]   --> src/rust0001_var_and_control_flow.rs:54:9
[INFO] [stdout]    |
[INFO] [stdout] 54 |     let str = String::from("String"); //堆分配字符串
[INFO] [stdout]    |         ^^^ help: if this is intentional, prefix it with an underscore: `_str`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]   --> src/rust0001_var_and_control_flow.rs:61:9
[INFO] [stdout]    |
[INFO] [stdout] 61 |     let i = 123;// 赋值语句是语句不是表达式 所以不能想其他语言一样使用 a=b=12 这种方法赋值
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]   --> src/rust0001_var_and_control_flow.rs:70:9
[INFO] [stdout]    |
[INFO] [stdout] 70 |     let i = if(i>3){
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `item`
[INFO] [stdout]   --> src/rust0001_var_and_control_flow.rs:78:9
[INFO] [stdout]    |
[INFO] [stdout] 78 |     let item = loop{
[INFO] [stdout]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_item`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]   --> src/rust0001_var_and_control_flow.rs:84:18
[INFO] [stdout]    |
[INFO] [stdout] 84 | pub fn func_test(i : i32)-> String{
[INFO] [stdout]    |                  ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `a`
[INFO] [stdout]    --> src/rust0001_var_and_control_flow.rs:103:9
[INFO] [stdout]     |
[INFO] [stdout] 103 |     let a = if number<5{
[INFO] [stdout]     |         ^ help: if this is intentional, prefix it with an underscore: `_a`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `item`
[INFO] [stdout]    --> src/rust0001_var_and_control_flow.rs:120:9
[INFO] [stdout]     |
[INFO] [stdout] 120 |     let item = loop{
[INFO] [stdout]     |         ^^^^ help: if this is intentional, prefix it with an underscore: `_item`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `a`
[INFO] [stdout]    --> src/rust0001_var_and_control_flow.rs:126:9
[INFO] [stdout]     |
[INFO] [stdout] 126 |     let a = while  number<5 {
[INFO] [stdout]     |         ^ help: if this is intentional, prefix it with an underscore: `_a`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `item`
[INFO] [stdout]   --> src/rust0000_official_example.rs:40:15
[INFO] [stdout]    |
[INFO] [stdout] 40 | pub fn notify(item: impl Summary){}
[INFO] [stdout]    |               ^^^^ help: if this is intentional, prefix it with an underscore: `_item`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `str`
[INFO] [stdout]   --> src/rust0002_ownership.rs:11:9
[INFO] [stdout]    |
[INFO] [stdout] 11 |     let mut str = "str item";
[INFO] [stdout]    |         ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_str`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `j`
[INFO] [stdout]   --> src/rust0002_ownership.rs:16:9
[INFO] [stdout]    |
[INFO] [stdout] 16 |     let j = i;
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_j`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `v`
[INFO] [stdout]   --> src/rust0002_ownership.rs:20:9
[INFO] [stdout]    |
[INFO] [stdout] 20 |     let v = j.clone();//使用clone 可以获取一个string字符串的clone
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_v`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `s`
[INFO] [stdout]   --> src/rust0002_ownership.rs:28:9
[INFO] [stdout]    |
[INFO] [stdout] 28 |     let s = test_fn(s);// 此时S已经没有任何作用域的信息
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_s`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `z`
[INFO] [stdout]   --> src/rust0002_ownership.rs:32:9
[INFO] [stdout]    |
[INFO] [stdout] 32 |     let z = &i;  //  获取这个值的引用
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_z`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `j`
[INFO] [stdout]   --> src/rust0002_ownership.rs:52:9
[INFO] [stdout]    |
[INFO] [stdout] 52 |     let j = &mut i;
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_j`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `itemStr`
[INFO] [stdout]   --> src/rust0002_ownership.rs:61:9
[INFO] [stdout]    |
[INFO] [stdout] 61 |     let itemStr = &str[0..1];
[INFO] [stdout]    |         ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_itemStr`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `user`
[INFO] [stdout]   --> src/rust0003_struct_1.rs:31:9
[INFO] [stdout]    |
[INFO] [stdout] 31 |     let mut user = User{
[INFO] [stdout]    |         ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_user`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]   --> src/rust0003_struct_1.rs:38:9
[INFO] [stdout]    |
[INFO] [stdout] 38 |     let i = item_y.0;
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `area`
[INFO] [stdout]   --> src/rust0003_struct_1.rs:71:9
[INFO] [stdout]    |
[INFO] [stdout] 71 |     let area = area(&rect1);
[INFO] [stdout]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_area`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `area`
[INFO] [stdout]   --> src/rust0003_struct_2.rs:49:9
[INFO] [stdout]    |
[INFO] [stdout] 49 |     let area = area(&rect1);
[INFO] [stdout]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_area`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `p`
[INFO] [stdout]   --> src/rust0003_struct_2.rs:57:9
[INFO] [stdout]    |
[INFO] [stdout] 57 |     let p =Rectangle::square(12);
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_p`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `four`
[INFO] [stdout]   --> src/rust0004_enum_and_match.rs:42:9
[INFO] [stdout]    |
[INFO] [stdout] 42 |     let four = IpAddrKind::V4;
[INFO] [stdout]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_four`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `six`
[INFO] [stdout]   --> src/rust0004_enum_and_match.rs:43:9
[INFO] [stdout]    |
[INFO] [stdout] 43 |     let six = IpAddrKind::V6;
[INFO] [stdout]    |         ^^^ help: if this is intentional, prefix it with an underscore: `_six`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `tow`
[INFO] [stdout]   --> src/rust0004_enum_and_match.rs:47:9
[INFO] [stdout]    |
[INFO] [stdout] 47 |     let tow = Some("sdfsdf");
[INFO] [stdout]    |         ^^^ help: if this is intentional, prefix it with an underscore: `_tow`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `sss`
[INFO] [stdout]   --> src/rust0004_enum_and_match.rs:48:9
[INFO] [stdout]    |
[INFO] [stdout] 48 |     let sss = one.expect("ddd");
[INFO] [stdout]    |         ^^^ help: if this is intentional, prefix it with an underscore: `_sss`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `ip_type`
[INFO] [stdout]   --> src/rust0004_enum_and_match.rs:53:10
[INFO] [stdout]    |
[INFO] [stdout] 53 | fn route(ip_type: IpAddrKind){
[INFO] [stdout]    |          ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_ip_type`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `tow`
[INFO] [stdout]   --> src/rust0004_enum_and_match.rs:47:9
[INFO] [stdout]    |
[INFO] [stdout] 47 |     let tow = Some("sdfsdf");
[INFO] [stdout]    |         ^^^ help: if this is intentional, prefix it with an underscore: `_tow`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `Penny`
[INFO] [stdout]   --> src/rust0004_enum_and_match.rs:71:9
[INFO] [stdout]    |
[INFO] [stdout] 71 |         Penny => { //支持括号模式
[INFO] [stdout]    |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_Penny`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `sss`
[INFO] [stdout]   --> src/rust0004_enum_and_match.rs:48:9
[INFO] [stdout]    |
[INFO] [stdout] 48 |     let sss = one.expect("ddd");
[INFO] [stdout]    |         ^^^ help: if this is intentional, prefix it with an underscore: `_sss`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `Nickel`
[INFO] [stdout]   --> src/rust0004_enum_and_match.rs:75:9
[INFO] [stdout]    |
[INFO] [stdout] 75 |         Nickel=>12,
[INFO] [stdout]    |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_Nickel`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `ip_type`
[INFO] [stdout]   --> src/rust0004_enum_and_match.rs:53:10
[INFO] [stdout]    |
[INFO] [stdout] 53 | fn route(ip_type: IpAddrKind){
[INFO] [stdout]    |          ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_ip_type`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `Penny`
[INFO] [stdout]   --> src/rust0004_enum_and_match.rs:71:9
[INFO] [stdout]    |
[INFO] [stdout] 71 |         Penny => { //支持括号模式
[INFO] [stdout]    |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_Penny`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `Dime`
[INFO] [stdout]   --> src/rust0004_enum_and_match.rs:76:9
[INFO] [stdout]    |
[INFO] [stdout] 76 |         Dime=>33,
[INFO] [stdout]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_Dime`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `Nickel`
[INFO] [stdout]   --> src/rust0004_enum_and_match.rs:75:9
[INFO] [stdout]    |
[INFO] [stdout] 75 |         Nickel=>12,
[INFO] [stdout]    |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_Nickel`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `Dime`
[INFO] [stdout]   --> src/rust0004_enum_and_match.rs:76:9
[INFO] [stdout]    |
[INFO] [stdout] 76 |         Dime=>33,
[INFO] [stdout]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_Dime`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/rust0002_ownership.rs:11:9
[INFO] [stdout]    |
[INFO] [stdout] 11 |     let mut str = "str item";
[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/rust0002_ownership.rs:36:9
[INFO] [stdout]    |
[INFO] [stdout] 36 |     let mut j = &mut i;
[INFO] [stdout]    |         ----^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/rust0002_ownership.rs:47:9
[INFO] [stdout]    |
[INFO] [stdout] 47 |     let mut p = &mut i;
[INFO] [stdout]    |         ----^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/rust0002_ownership.rs:60:9
[INFO] [stdout]    |
[INFO] [stdout] 60 |     let mut str = String::from("test string");
[INFO] [stdout]    |         ----^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/rust0002_ownership.rs:11:9
[INFO] [stdout]    |
[INFO] [stdout] 11 |     let mut str = "str item";
[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/rust0002_ownership.rs:36:9
[INFO] [stdout]    |
[INFO] [stdout] 36 |     let mut j = &mut i;
[INFO] [stdout]    |         ----^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/rust0002_ownership.rs:47:9
[INFO] [stdout]    |
[INFO] [stdout] 47 |     let mut p = &mut i;
[INFO] [stdout]    |         ----^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/rust0002_ownership.rs:60:9
[INFO] [stdout]    |
[INFO] [stdout] 60 |     let mut str = String::from("test string");
[INFO] [stdout]    |         ----^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/rust0003_struct_1.rs:28:9
[INFO] [stdout]    |
[INFO] [stdout] 28 |     let mut user_temp = test_02(String::from("kyssion@kys.net"),String::from("jetty"));
[INFO] [stdout]    |         ----^^^^^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/rust0003_struct_1.rs:31:9
[INFO] [stdout]    |
[INFO] [stdout] 31 |     let mut user = User{
[INFO] [stdout]    |         ----^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/rust0003_struct_1.rs:37:9
[INFO] [stdout]    |
[INFO] [stdout] 37 |     let mut item_y = YStruct(12, String::from("test"), 1.2);
[INFO] [stdout]    |         ----^^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/rust0003_struct_1.rs:28:9
[INFO] [stdout]    |
[INFO] [stdout] 28 |     let mut user_temp = test_02(String::from("kyssion@kys.net"),String::from("jetty"));
[INFO] [stdout]    |         ----^^^^^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/rust0004_enum_and_match.rs:46:9
[INFO] [stdout]    |
[INFO] [stdout] 46 |     let mut one = Some(12);
[INFO] [stdout]    |         ----^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/rust0003_struct_1.rs:31:9
[INFO] [stdout]    |
[INFO] [stdout] 31 |     let mut user = User{
[INFO] [stdout]    |         ----^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/rust0003_struct_1.rs:37:9
[INFO] [stdout]    |
[INFO] [stdout] 37 |     let mut item_y = YStruct(12, String::from("test"), 1.2);
[INFO] [stdout]    |         ----^^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `test1`
[INFO] [stdout]  --> src/rust0001_var_and_control_flow.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn test1() {
[INFO] [stdout]   |        ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `MAX_LENGTH`
[INFO] [stdout]   --> src/rust0001_var_and_control_flow.rs:15:1
[INFO] [stdout]    |
[INFO] [stdout] 15 | const MAX_LENGTH: i32 = 1000;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `data_type`
[INFO] [stdout]   --> src/rust0001_var_and_control_flow.rs:17:8
[INFO] [stdout]    |
[INFO] [stdout] 17 | pub fn data_type() {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `statement_and_expression`
[INFO] [stdout]   --> src/rust0001_var_and_control_flow.rs:59:8
[INFO] [stdout]    |
[INFO] [stdout] 59 | pub fn statement_and_expression(){
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `func_test`
[INFO] [stdout]   --> src/rust0001_var_and_control_flow.rs:84:8
[INFO] [stdout]    |
[INFO] [stdout] 84 | pub fn func_test(i : i32)-> String{
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `process_test`
[INFO] [stdout]   --> src/rust0001_var_and_control_flow.rs:90:8
[INFO] [stdout]    |
[INFO] [stdout] 90 | pub fn process_test(){
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `test1`
[INFO] [stdout]  --> src/rust0000_official_example.rs:5:8
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub fn test1() {
[INFO] [stdout]   |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `notify`
[INFO] [stdout]   --> src/rust0000_official_example.rs:40:8
[INFO] [stdout]    |
[INFO] [stdout] 40 | pub fn notify(item: impl Summary){}
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `ownership_main`
[INFO] [stdout]  --> src/rust0002_ownership.rs:2:8
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub fn ownership_main(){
[INFO] [stdout]   |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `test_main`
[INFO] [stdout]   --> src/rust0002_ownership.rs:67:4
[INFO] [stdout]    |
[INFO] [stdout] 67 | fn test_main() {
[INFO] [stdout]    |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `test3_fn`
[INFO] [stdout]   --> src/rust0002_ownership.rs:74:8
[INFO] [stdout]    |
[INFO] [stdout] 74 | pub fn test3_fn(s:&String) -> &str{
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `test_fn`
[INFO] [stdout]   --> src/rust0002_ownership.rs:85:8
[INFO] [stdout]    |
[INFO] [stdout] 85 | pub fn test_fn(s:String)-> String{
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `test2_fn`
[INFO] [stdout]   --> src/rust0002_ownership.rs:90:8
[INFO] [stdout]    |
[INFO] [stdout] 90 | pub fn test2_fn(s: &String)->usize{
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `User`
[INFO] [stdout]  --> src/rust0003_struct_1.rs:2:12
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub struct User{
[INFO] [stdout]   |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `YStruct`
[INFO] [stdout]   --> src/rust0003_struct_1.rs:10:8
[INFO] [stdout]    |
[INFO] [stdout] 10 | struct YStruct(i32, String, f64);
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `YStructEmpty`
[INFO] [stdout]   --> src/rust0003_struct_1.rs:13:8
[INFO] [stdout]    |
[INFO] [stdout] 13 | struct YStructEmpty();
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `test_01`
[INFO] [stdout]   --> src/rust0003_struct_1.rs:15:8
[INFO] [stdout]    |
[INFO] [stdout] 15 | pub fn test_01(){
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `test_02`
[INFO] [stdout]   --> src/rust0003_struct_1.rs:45:8
[INFO] [stdout]    |
[INFO] [stdout] 45 | pub fn test_02(email : String,user_name:String)-> User{
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `area`
[INFO] [stdout]   --> src/rust0003_struct_1.rs:62:4
[INFO] [stdout]    |
[INFO] [stdout] 62 | fn area(rectangle: &Rectangle)->u32{
[INFO] [stdout]    |    ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `example`
[INFO] [stdout]   --> src/rust0003_struct_1.rs:66:8
[INFO] [stdout]    |
[INFO] [stdout] 66 | pub fn example(){
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `area`
[INFO] [stdout]   --> src/rust0003_struct_2.rs:14:8
[INFO] [stdout]    |
[INFO] [stdout] 14 |     fn area(&self)->u32{
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `add_with`
[INFO] [stdout]   --> src/rust0003_struct_2.rs:19:8
[INFO] [stdout]    |
[INFO] [stdout] 19 |     fn add_with(&mut self,i:u32){
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `can_hold`
[INFO] [stdout]   --> src/rust0003_struct_2.rs:24:8
[INFO] [stdout]    |
[INFO] [stdout] 24 |     fn can_hold(&self,other : &Rectangle)->bool{
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `square`
[INFO] [stdout]   --> src/rust0003_struct_2.rs:32:8
[INFO] [stdout]    |
[INFO] [stdout] 32 |     fn square(size: u32)->Rectangle{
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `area`
[INFO] [stdout]   --> src/rust0003_struct_2.rs:40:4
[INFO] [stdout]    |
[INFO] [stdout] 40 | fn area(rectangle: &Rectangle)->u32{
[INFO] [stdout]    |    ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `example`
[INFO] [stdout]   --> src/rust0003_struct_2.rs:44:8
[INFO] [stdout]    |
[INFO] [stdout] 44 | pub fn example(){
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum is never used: `IpAddrKind`
[INFO] [stdout]  --> src/rust0004_enum_and_match.rs:9:6
[INFO] [stdout]   |
[INFO] [stdout] 9 | enum IpAddrKind{
[INFO] [stdout]   |      ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `TestStruct`
[INFO] [stdout]   --> src/rust0004_enum_and_match.rs:14:8
[INFO] [stdout]    |
[INFO] [stdout] 14 | struct TestStruct{
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum is never used: `TestEnum`
[INFO] [stdout]   --> src/rust0004_enum_and_match.rs:21:6
[INFO] [stdout]    |
[INFO] [stdout] 21 | enum TestEnum{
[INFO] [stdout]    |      ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `test2`
[INFO] [stdout]   --> src/rust0004_enum_and_match.rs:31:4
[INFO] [stdout]    |
[INFO] [stdout] 31 | fn test2(test :TestEnum){
[INFO] [stdout]    |    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `test1`
[INFO] [stdout]   --> src/rust0004_enum_and_match.rs:40:4
[INFO] [stdout]    |
[INFO] [stdout] 40 | fn test1(){
[INFO] [stdout]    |    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `route`
[INFO] [stdout]   --> src/rust0004_enum_and_match.rs:53:4
[INFO] [stdout]    |
[INFO] [stdout] 53 | fn route(ip_type: IpAddrKind){
[INFO] [stdout]    |    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Penny`
[INFO] [stdout]   --> src/rust0004_enum_and_match.rs:62:5
[INFO] [stdout]    |
[INFO] [stdout] 62 |     Penny,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Nickel`
[INFO] [stdout]   --> src/rust0004_enum_and_match.rs:63:5
[INFO] [stdout]    |
[INFO] [stdout] 63 |     Nickel,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Quarter`
[INFO] [stdout]   --> src/rust0004_enum_and_match.rs:65:5
[INFO] [stdout]    |
[INFO] [stdout] 65 |     Quarter(i32,f64)
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `test_match`
[INFO] [stdout]   --> src/rust0004_enum_and_match.rs:67:8
[INFO] [stdout]    |
[INFO] [stdout] 67 | pub fn test_match (item : Coin) -> i32{
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `test_match_3`
[INFO] [stdout]   --> src/rust0004_enum_and_match.rs:88:8
[INFO] [stdout]    |
[INFO] [stdout] 88 | pub fn test_match_3(){
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `add_to_wait_list`
[INFO] [stdout]   --> src/rust0005_pakage_module_other.rs:15:16
[INFO] [stdout]    |
[INFO] [stdout] 15 |        pub fn  add_to_wait_list(){}
[INFO] [stdout]    |                ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `seat_at_table`
[INFO] [stdout]   --> src/rust0005_pakage_module_other.rs:16:12
[INFO] [stdout]    |
[INFO] [stdout] 16 |         fn seat_at_table(){}
[INFO] [stdout]    |            ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `take_order`
[INFO] [stdout]   --> src/rust0005_pakage_module_other.rs:20:12
[INFO] [stdout]    |
[INFO] [stdout] 20 |         fn take_order() {
[INFO] [stdout]    |            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `server_order`
[INFO] [stdout]   --> src/rust0005_pakage_module_other.rs:24:12
[INFO] [stdout]    |
[INFO] [stdout] 24 |         fn server_order() {}
[INFO] [stdout]    |            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `eat_at_restaurant`
[INFO] [stdout]   --> src/rust0005_pakage_module_other.rs:28:9
[INFO] [stdout]    |
[INFO] [stdout] 28 | pub fn  eat_at_restaurant(){
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `itemStr` should have a snake case name
[INFO] [stdout]   --> src/rust0002_ownership.rs:61:9
[INFO] [stdout]    |
[INFO] [stdout] 61 |     let itemStr = &str[0..1];
[INFO] [stdout]    |         ^^^^^^^ help: convert the identifier to snake case: `item_str`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: structure field `itemStr` should have a snake case name
[INFO] [stdout]   --> src/rust0004_enum_and_match.rs:15:5
[INFO] [stdout]    |
[INFO] [stdout] 15 |     itemStr:String
[INFO] [stdout]    |     ^^^^^^^ help: convert the identifier to snake case: `item_str`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `Penny` should have a snake case name
[INFO] [stdout]   --> src/rust0004_enum_and_match.rs:71:9
[INFO] [stdout]    |
[INFO] [stdout] 71 |         Penny => { //支持括号模式
[INFO] [stdout]    |         ^^^^^ help: convert the identifier to snake case: `penny`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `Nickel` should have a snake case name
[INFO] [stdout]   --> src/rust0004_enum_and_match.rs:75:9
[INFO] [stdout]    |
[INFO] [stdout] 75 |         Nickel=>12,
[INFO] [stdout]    |         ^^^^^^ help: convert the identifier to snake case: `nickel`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/rust0004_enum_and_match.rs:46:9
[INFO] [stdout]    |
[INFO] [stdout] 46 |     let mut one = Some(12);
[INFO] [stdout]    |         ----^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `Dime` should have a snake case name
[INFO] [stdout]   --> src/rust0004_enum_and_match.rs:76:9
[INFO] [stdout]    |
[INFO] [stdout] 76 |         Dime=>33,
[INFO] [stdout]    |         ^^^^ help: convert the identifier to snake case: `dime`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `test1`
[INFO] [stdout]  --> src/rust0001_var_and_control_flow.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn test1() {
[INFO] [stdout]   |        ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `MAX_LENGTH`
[INFO] [stdout]   --> src/rust0001_var_and_control_flow.rs:15:1
[INFO] [stdout]    |
[INFO] [stdout] 15 | const MAX_LENGTH: i32 = 1000;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `data_type`
[INFO] [stdout]   --> src/rust0001_var_and_control_flow.rs:17:8
[INFO] [stdout]    |
[INFO] [stdout] 17 | pub fn data_type() {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `statement_and_expression`
[INFO] [stdout]   --> src/rust0001_var_and_control_flow.rs:59:8
[INFO] [stdout]    |
[INFO] [stdout] 59 | pub fn statement_and_expression(){
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `func_test`
[INFO] [stdout]   --> src/rust0001_var_and_control_flow.rs:84:8
[INFO] [stdout]    |
[INFO] [stdout] 84 | pub fn func_test(i : i32)-> String{
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `process_test`
[INFO] [stdout]   --> src/rust0001_var_and_control_flow.rs:90:8
[INFO] [stdout]    |
[INFO] [stdout] 90 | pub fn process_test(){
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `test1`
[INFO] [stdout]  --> src/rust0000_official_example.rs:5:8
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub fn test1() {
[INFO] [stdout]   |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `notify`
[INFO] [stdout]   --> src/rust0000_official_example.rs:40:8
[INFO] [stdout]    |
[INFO] [stdout] 40 | pub fn notify(item: impl Summary){}
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `ownership_main`
[INFO] [stdout]  --> src/rust0002_ownership.rs:2:8
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub fn ownership_main(){
[INFO] [stdout]   |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `test_main`
[INFO] [stdout]   --> src/rust0002_ownership.rs:67:4
[INFO] [stdout]    |
[INFO] [stdout] 67 | fn test_main() {
[INFO] [stdout]    |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `test3_fn`
[INFO] [stdout]   --> src/rust0002_ownership.rs:74:8
[INFO] [stdout]    |
[INFO] [stdout] 74 | pub fn test3_fn(s:&String) -> &str{
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `test_fn`
[INFO] [stdout]   --> src/rust0002_ownership.rs:85:8
[INFO] [stdout]    |
[INFO] [stdout] 85 | pub fn test_fn(s:String)-> String{
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `test2_fn`
[INFO] [stdout]   --> src/rust0002_ownership.rs:90:8
[INFO] [stdout]    |
[INFO] [stdout] 90 | pub fn test2_fn(s: &String)->usize{
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `User`
[INFO] [stdout]  --> src/rust0003_struct_1.rs:2:12
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub struct User{
[INFO] [stdout]   |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `YStruct`
[INFO] [stdout]   --> src/rust0003_struct_1.rs:10:8
[INFO] [stdout]    |
[INFO] [stdout] 10 | struct YStruct(i32, String, f64);
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `YStructEmpty`
[INFO] [stdout]   --> src/rust0003_struct_1.rs:13:8
[INFO] [stdout]    |
[INFO] [stdout] 13 | struct YStructEmpty();
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `test_01`
[INFO] [stdout]   --> src/rust0003_struct_1.rs:15:8
[INFO] [stdout]    |
[INFO] [stdout] 15 | pub fn test_01(){
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `test_02`
[INFO] [stdout]   --> src/rust0003_struct_1.rs:45:8
[INFO] [stdout]    |
[INFO] [stdout] 45 | pub fn test_02(email : String,user_name:String)-> User{
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `area`
[INFO] [stdout]   --> src/rust0003_struct_1.rs:62:4
[INFO] [stdout]    |
[INFO] [stdout] 62 | fn area(rectangle: &Rectangle)->u32{
[INFO] [stdout]    |    ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `example`
[INFO] [stdout]   --> src/rust0003_struct_1.rs:66:8
[INFO] [stdout]    |
[INFO] [stdout] 66 | pub fn example(){
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `area`
[INFO] [stdout]   --> src/rust0003_struct_2.rs:14:8
[INFO] [stdout]    |
[INFO] [stdout] 14 |     fn area(&self)->u32{
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `add_with`
[INFO] [stdout]   --> src/rust0003_struct_2.rs:19:8
[INFO] [stdout]    |
[INFO] [stdout] 19 |     fn add_with(&mut self,i:u32){
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `can_hold`
[INFO] [stdout]   --> src/rust0003_struct_2.rs:24:8
[INFO] [stdout]    |
[INFO] [stdout] 24 |     fn can_hold(&self,other : &Rectangle)->bool{
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `square`
[INFO] [stdout]   --> src/rust0003_struct_2.rs:32:8
[INFO] [stdout]    |
[INFO] [stdout] 32 |     fn square(size: u32)->Rectangle{
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `area`
[INFO] [stdout]   --> src/rust0003_struct_2.rs:40:4
[INFO] [stdout]    |
[INFO] [stdout] 40 | fn area(rectangle: &Rectangle)->u32{
[INFO] [stdout]    |    ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `example`
[INFO] [stdout]   --> src/rust0003_struct_2.rs:44:8
[INFO] [stdout]    |
[INFO] [stdout] 44 | pub fn example(){
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum is never used: `IpAddrKind`
[INFO] [stdout]  --> src/rust0004_enum_and_match.rs:9:6
[INFO] [stdout]   |
[INFO] [stdout] 9 | enum IpAddrKind{
[INFO] [stdout]   |      ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `TestStruct`
[INFO] [stdout]   --> src/rust0004_enum_and_match.rs:14:8
[INFO] [stdout]    |
[INFO] [stdout] 14 | struct TestStruct{
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum is never used: `TestEnum`
[INFO] [stdout]   --> src/rust0004_enum_and_match.rs:21:6
[INFO] [stdout]    |
[INFO] [stdout] 21 | enum TestEnum{
[INFO] [stdout]    |      ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `test2`
[INFO] [stdout]   --> src/rust0004_enum_and_match.rs:31:4
[INFO] [stdout]    |
[INFO] [stdout] 31 | fn test2(test :TestEnum){
[INFO] [stdout]    |    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `test1`
[INFO] [stdout]   --> src/rust0004_enum_and_match.rs:40:4
[INFO] [stdout]    |
[INFO] [stdout] 40 | fn test1(){
[INFO] [stdout]    |    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `route`
[INFO] [stdout]   --> src/rust0004_enum_and_match.rs:53:4
[INFO] [stdout]    |
[INFO] [stdout] 53 | fn route(ip_type: IpAddrKind){
[INFO] [stdout]    |    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Penny`
[INFO] [stdout]   --> src/rust0004_enum_and_match.rs:62:5
[INFO] [stdout]    |
[INFO] [stdout] 62 |     Penny,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Nickel`
[INFO] [stdout]   --> src/rust0004_enum_and_match.rs:63:5
[INFO] [stdout]    |
[INFO] [stdout] 63 |     Nickel,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Quarter`
[INFO] [stdout]   --> src/rust0004_enum_and_match.rs:65:5
[INFO] [stdout]    |
[INFO] [stdout] 65 |     Quarter(i32,f64)
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `test_match`
[INFO] [stdout]   --> src/rust0004_enum_and_match.rs:67:8
[INFO] [stdout]    |
[INFO] [stdout] 67 | pub fn test_match (item : Coin) -> i32{
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `test_match_3`
[INFO] [stdout]   --> src/rust0004_enum_and_match.rs:88:8
[INFO] [stdout]    |
[INFO] [stdout] 88 | pub fn test_match_3(){
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `add_to_wait_list`
[INFO] [stdout]   --> src/rust0005_pakage_module_other.rs:15:16
[INFO] [stdout]    |
[INFO] [stdout] 15 |        pub fn  add_to_wait_list(){}
[INFO] [stdout]    |                ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `seat_at_table`
[INFO] [stdout]   --> src/rust0005_pakage_module_other.rs:16:12
[INFO] [stdout]    |
[INFO] [stdout] 16 |         fn seat_at_table(){}
[INFO] [stdout]    |            ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `take_order`
[INFO] [stdout]   --> src/rust0005_pakage_module_other.rs:20:12
[INFO] [stdout]    |
[INFO] [stdout] 20 |         fn take_order() {
[INFO] [stdout]    |            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `server_order`
[INFO] [stdout]   --> src/rust0005_pakage_module_other.rs:24:12
[INFO] [stdout]    |
[INFO] [stdout] 24 |         fn server_order() {}
[INFO] [stdout]    |            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `eat_at_restaurant`
[INFO] [stdout]   --> src/rust0005_pakage_module_other.rs:28:9
[INFO] [stdout]    |
[INFO] [stdout] 28 | pub fn  eat_at_restaurant(){
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `itemStr` should have a snake case name
[INFO] [stdout]   --> src/rust0002_ownership.rs:61:9
[INFO] [stdout]    |
[INFO] [stdout] 61 |     let itemStr = &str[0..1];
[INFO] [stdout]    |         ^^^^^^^ help: convert the identifier to snake case: `item_str`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: structure field `itemStr` should have a snake case name
[INFO] [stdout]   --> src/rust0004_enum_and_match.rs:15:5
[INFO] [stdout]    |
[INFO] [stdout] 15 |     itemStr:String
[INFO] [stdout]    |     ^^^^^^^ help: convert the identifier to snake case: `item_str`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `Penny` should have a snake case name
[INFO] [stdout]   --> src/rust0004_enum_and_match.rs:71:9
[INFO] [stdout]    |
[INFO] [stdout] 71 |         Penny => { //支持括号模式
[INFO] [stdout]    |         ^^^^^ help: convert the identifier to snake case: `penny`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `Nickel` should have a snake case name
[INFO] [stdout]   --> src/rust0004_enum_and_match.rs:75:9
[INFO] [stdout]    |
[INFO] [stdout] 75 |         Nickel=>12,
[INFO] [stdout]    |         ^^^^^^ help: convert the identifier to snake case: `nickel`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `Dime` should have a snake case name
[INFO] [stdout]   --> src/rust0004_enum_and_match.rs:76:9
[INFO] [stdout]    |
[INFO] [stdout] 76 |         Dime=>33,
[INFO] [stdout]    |         ^^^^ help: convert the identifier to snake case: `dime`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 124 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0170`.
[INFO] [stdout] 
[INFO] [stdout] warning: 124 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0170`.
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 5.95s
[INFO] running `Command { std: "docker" "inspect" "5ede597306c18b523625bf2ea6c8382e0e62f14956db72f523092df70add90db", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5ede597306c18b523625bf2ea6c8382e0e62f14956db72f523092df70add90db", kill_on_drop: false }`
[INFO] [stdout] 5ede597306c18b523625bf2ea6c8382e0e62f14956db72f523092df70add90db