[INFO] cloning repository https://github.com/ls-2018/rust-helloworld
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ls-2018/rust-helloworld" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fls-2018%2Frust-helloworld", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fls-2018%2Frust-helloworld'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] e5b9794c407360d9407da9eb0b7989ce4b36e37c
[INFO] checking ls-2018/rust-helloworld against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fls-2018%2Frust-helloworld" "/workspace/builds/worker-4-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/ls-2018/rust-helloworld
[INFO] finished tweaking git repo https://github.com/ls-2018/rust-helloworld
[INFO] tweaked toml for git repo https://github.com/ls-2018/rust-helloworld written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/ls-2018/rust-helloworld on toolchain 4f260f0f20b3133d20cfb50353c0221943af5796
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/ls-2018/rust-helloworld 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" "+4f260f0f20b3133d20cfb50353c0221943af5796" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
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[INFO] [stderr]     Blocking waiting for file lock on package cache
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[INFO] running `Command { std: "docker" "start" "-a" "c0997aa532e732c146830c8ecec3700dbdde5494a5b97d6f339b27ee089ac43a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c0997aa532e732c146830c8ecec3700dbdde5494a5b97d6f339b27ee089ac43a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c0997aa532e732c146830c8ecec3700dbdde5494a5b97d6f339b27ee089ac43a", kill_on_drop: false }`
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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 -Dunmustuse_in_always_ok" "-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
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[INFO] [stderr]     Checking garden v0.1.0 (/opt/rustwide/workdir/garden)
[INFO] [stdout] warning: unused import: `actix_web::web::Path`
[INFO] [stdout]  --> garden/src/file.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use actix_web::web::Path;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `serde_json::Value::String`
[INFO] [stdout]  --> garden/src/file.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use serde_json::Value::String;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Error`
[INFO] [stdout]  --> garden/src/err.rs:4:15
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::io::{Error, Read};
[INFO] [stdout]   |               ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::collections::HashMap`
[INFO] [stdout]  --> garden/src/io.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::collections::HashMap;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::io::Write`
[INFO] [stdout]  --> garden/src/io.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::io::Write;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::process::*`
[INFO] [stdout]  --> garden/src/io.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use std::process::*;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `actix_web::middleware::from_fn`
[INFO] [stdout]  --> garden/src/iter.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use actix_web::middleware::from_fn;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `rand::random`
[INFO] [stdout]  --> garden/src/iter.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use rand::random;
[INFO] [stdout]   |     ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `HashMap` and `HashSet`
[INFO] [stdout]  --> garden/src/iter.rs:3:24
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::collections::{HashMap, HashSet};
[INFO] [stdout]   |                        ^^^^^^^  ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::io::BufRead`
[INFO] [stdout]  --> garden/src/reg.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::io::BufRead;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::fmt`
[INFO] [stdout]   --> garden/src/str.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 13 | use std::fmt;
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Result` and `Write`
[INFO] [stdout]   --> garden/src/str.rs:14:15
[INFO] [stdout]    |
[INFO] [stdout] 14 | use std::io::{Result, Write};
[INFO] [stdout]    |               ^^^^^^  ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: crate-level attribute should be in the root module
[INFO] [stdout]  --> garden/src/file.rs:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(trace_macros)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_attributes)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the `#![recursion_limit]` attribute can only be used at the crate root
[INFO] [stdout]  --> garden/src/file.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![recursion_limit = "256"]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `f`
[INFO] [stdout]   --> garden/src/debug.rs:20:19
[INFO] [stdout]    |
[INFO] [stdout] 20 |     fn fmt(&self, f: &mut Formatter<'_>) -> std::fmt::Result {
[INFO] [stdout]    |                   ^ help: if this is intentional, prefix it with an underscore: `_f`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `a`
[INFO] [stdout]   --> garden/src/err.rs:50:9
[INFO] [stdout]    |
[INFO] [stdout] 50 |     let a: MyError = x.into();
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_a`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `t`
[INFO] [stdout]   --> garden/src/from.rs:90:9
[INFO] [stdout]    |
[INFO] [stdout] 90 |     let t: Result<T, _> = FromStr::from_str(s);
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_t`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `t`
[INFO] [stdout]   --> garden/src/from.rs:91:9
[INFO] [stdout]    |
[INFO] [stdout] 91 |     let t = T::from_str(s);
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_t`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `t`
[INFO] [stdout]   --> garden/src/from.rs:92:9
[INFO] [stdout]    |
[INFO] [stdout] 92 |     let t: Result<T, _> = s.parse();
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_t`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `t`
[INFO] [stdout]   --> garden/src/from.rs:93:9
[INFO] [stdout]    |
[INFO] [stdout] 93 |     let t = s.parse::<T>(); // 最常用的写法
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_t`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `s`
[INFO] [stdout]  --> garden/src/ref.rs:4:14
[INFO] [stdout]   |
[INFO] [stdout] 4 | fn takes_str(s: &str) {
[INFO] [stdout]   |              ^ help: if this is intentional, prefix it with an underscore: `_s`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `s`
[INFO] [stdout]   --> garden/src/ref.rs:13:9
[INFO] [stdout]    |
[INFO] [stdout] 13 |     let s: &str = s.as_ref();
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_s`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `a`
[INFO] [stdout]   --> garden/src/ref.rs:18:9
[INFO] [stdout]    |
[INFO] [stdout] 18 |     let a: &str = borrow.as_ref();
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_a`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]   --> garden/src/safe.rs:16:24
[INFO] [stdout]    |
[INFO] [stdout] 16 |     fn typed<T>(&self, x: T) {} // 方法中不能有类型参数
[INFO] [stdout]    |                        ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]   --> garden/src/safe.rs:83:13
[INFO] [stdout]    |
[INFO] [stdout] 83 | fn doit1111(x: impl TraitA) {}
[INFO] [stdout]    |             ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]   --> garden/src/safe.rs:85:25
[INFO] [stdout]    |
[INFO] [stdout] 85 | fn doit11113<T: TraitA>(x: T) {}
[INFO] [stdout]    |                         ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]   --> garden/src/safe.rs:88:14
[INFO] [stdout]    |
[INFO] [stdout] 88 | fn doit11114(x: &dyn TraitA) {}
[INFO] [stdout]    |              ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> garden/src/safe.rs:98:9
[INFO] [stdout]    |
[INFO] [stdout] 98 |     let mut buf: Vec<u8> = vec![];
[INFO] [stdout]    |         ----^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `buf`
[INFO] [stdout]   --> garden/src/safe.rs:98:9
[INFO] [stdout]    |
[INFO] [stdout] 98 |     let mut buf: Vec<u8> = vec![];
[INFO] [stdout]    |         ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_buf`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `writer`
[INFO] [stdout]    --> garden/src/safe.rs:101:9
[INFO] [stdout]     |
[INFO] [stdout] 101 |     let writer: &mut dyn Write = &mut buf; // 正确
[INFO] [stdout]     |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_writer`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `n`
[INFO] [stdout]   --> garden/src/trait.rs:18:13
[INFO] [stdout]    |
[INFO] [stdout] 18 |     fn play(n: T) {} // 注意这一行
[INFO] [stdout]    |             ^ help: if this is intentional, prefix it with an underscore: `_n`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `both_integer`
[INFO] [stdout]   --> garden/src/trait.rs:98:9
[INFO] [stdout]    |
[INFO] [stdout] 98 |     let both_integer = Point2 { x: 5, y: 10 };
[INFO] [stdout]    |         ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_both_integer`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `both_float`
[INFO] [stdout]    --> garden/src/trait.rs:100:9
[INFO] [stdout]     |
[INFO] [stdout] 100 |     let both_float = Point2 { x: 1.0, y: 4.0 };
[INFO] [stdout]     |         ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_both_float`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `integer_and_float`
[INFO] [stdout]    --> garden/src/trait.rs:102:9
[INFO] [stdout]     |
[INFO] [stdout] 102 |     let integer_and_float = Point2 { x: 5, y: 4.0 };
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_integer_and_float`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `a`
[INFO] [stdout]    --> garden/src/trait.rs:377:21
[INFO] [stdout]     |
[INFO] [stdout] 377 | fn doit<T: TraitA2>(a: T::Mytype) {} // 这里在函数中使用了关联类型
[INFO] [stdout]     |                     ^ help: if this is intentional, prefix it with an underscore: `_a`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `t`
[INFO] [stdout]    --> garden/src/trait.rs:433:10
[INFO] [stdout]     |
[INFO] [stdout] 433 |     fn p(t: T) {}
[INFO] [stdout]     |          ^ help: if this is intentional, prefix it with an underscore: `_t`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `dot_emacs`
[INFO] [stdout]  --> garden/src/trait_asref.rs:6:9
[INFO] [stdout]   |
[INFO] [stdout] 6 |     let dot_emacs = std::fs::File::open(p);
[INFO] [stdout]   |         ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_dot_emacs`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `c`
[INFO] [stdout]  --> garden/src/trait_asref.rs:9:9
[INFO] [stdout]   |
[INFO] [stdout] 9 |     let c = a.to_string(); // 堆
[INFO] [stdout]   |         ^ help: if this is intentional, prefix it with an underscore: `_c`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `b`
[INFO] [stdout]   --> garden/src/trait_asref.rs:10:9
[INFO] [stdout]    |
[INFO] [stdout] 10 |     let b = &a;
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_b`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Point` is never constructed
[INFO] [stdout]   --> garden/src/add.rs:16:8
[INFO] [stdout]    |
[INFO] [stdout] 16 | struct Point {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `San` is never constructed
[INFO] [stdout]   --> garden/src/add.rs:78:8
[INFO] [stdout]    |
[INFO] [stdout] 78 | struct San {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `User` is never constructed
[INFO] [stdout]  --> garden/src/base.rs:9:19
[INFO] [stdout]   |
[INFO] [stdout] 9 | pub(crate) struct User {
[INFO] [stdout]   |                   ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `foo` is never used
[INFO] [stdout]    --> garden/src/base.rs:147:4
[INFO] [stdout]     |
[INFO] [stdout] 147 | fn foo(s: &mut String) {
[INFO] [stdout]     |    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Class` is never constructed
[INFO] [stdout]    --> garden/src/base.rs:151:8
[INFO] [stdout]     |
[INFO] [stdout] 151 | struct Class {
[INFO] [stdout]     |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Color` is never constructed
[INFO] [stdout]    --> garden/src/base.rs:158:8
[INFO] [stdout]     |
[INFO] [stdout] 158 | struct Color(i32, i32, i32); // 元组结构体
[INFO] [stdout]     |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `ArticleModule` is never constructed
[INFO] [stdout]    --> garden/src/base.rs:159:8
[INFO] [stdout]     |
[INFO] [stdout] 159 | struct ArticleModule; // 单元结构体
[INFO] [stdout]     |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `List` is never constructed
[INFO] [stdout]    --> garden/src/base.rs:160:8
[INFO] [stdout]     |
[INFO] [stdout] 160 | struct List<T>(Vec<T>);
[INFO] [stdout]     |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `AAA` is never used
[INFO] [stdout]    --> garden/src/base.rs:165:6
[INFO] [stdout]     |
[INFO] [stdout] 165 | type AAA = HashMap<String, Vec<u8>>;
[INFO] [stdout]     |      ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `BBB` is never used
[INFO] [stdout]    --> garden/src/base.rs:167:6
[INFO] [stdout]     |
[INFO] [stdout] 167 | type BBB = Vec<AAA>;
[INFO] [stdout]     |      ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `CCC` is never used
[INFO] [stdout]    --> garden/src/base.rs:169:6
[INFO] [stdout]     |
[INFO] [stdout] 169 | type CCC = HashMap<String, BBB>;
[INFO] [stdout]     |      ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `DDD` is never used
[INFO] [stdout]    --> garden/src/base.rs:171:6
[INFO] [stdout]     |
[INFO] [stdout] 171 | type DDD = Vec<CCC>;
[INFO] [stdout]     |      ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `EEE` is never used
[INFO] [stdout]    --> garden/src/base.rs:173:6
[INFO] [stdout]     |
[INFO] [stdout] 173 | type EEE = HashMap<String, DDD>;
[INFO] [stdout]     |      ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Operate` is never used
[INFO] [stdout]  --> garden/src/class.rs:1:7
[INFO] [stdout]   |
[INFO] [stdout] 1 | trait Operate {
[INFO] [stdout]   |       ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `MyI8` is never constructed
[INFO] [stdout]   --> garden/src/class.rs:12:8
[INFO] [stdout]    |
[INFO] [stdout] 12 | struct MyI8(i8);
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `foo` is never used
[INFO] [stdout]   --> garden/src/class.rs:15:8
[INFO] [stdout]    |
[INFO] [stdout] 14 | impl MyI8 {
[INFO] [stdout]    | --------- method in this implementation
[INFO] [stdout] 15 |     fn foo(&self) {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Point` is never constructed
[INFO] [stdout]   --> garden/src/debug.rs:14:8
[INFO] [stdout]    |
[INFO] [stdout] 14 | struct Point {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Point` is never constructed
[INFO] [stdout]  --> garden/src/display.rs:5:8
[INFO] [stdout]   |
[INFO] [stdout] 5 | struct Point {
[INFO] [stdout]   |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `say_hello` is never used
[INFO] [stdout]  --> garden/src/file.rs:8:4
[INFO] [stdout]   |
[INFO] [stdout] 8 | fn say_hello(out: &mut dyn Write) -> std::io::Result<()> {
[INFO] [stdout]   |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `DataStoreError` is never used
[INFO] [stdout]  --> garden/src/err.rs:8:10
[INFO] [stdout]   |
[INFO] [stdout] 8 | pub enum DataStoreError {
[INFO] [stdout]   |          ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `xxx` is never used
[INFO] [stdout]   --> garden/src/err.rs:19:4
[INFO] [stdout]    |
[INFO] [stdout] 19 | fn xxx() -> Result<(), DataStoreError> {
[INFO] [stdout]    |    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `MyError` is never constructed
[INFO] [stdout]   --> garden/src/err.rs:37:8
[INFO] [stdout]    |
[INFO] [stdout] 37 | struct MyError(String); // 用newtype方法定义了一个新的错误类型
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `read_file` is never used
[INFO] [stdout]   --> garden/src/err.rs:45:4
[INFO] [stdout]    |
[INFO] [stdout] 45 | fn read_file() -> Result<String, MyError> {
[INFO] [stdout]    |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Point` is never constructed
[INFO] [stdout]  --> garden/src/from.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | struct Point {
[INFO] [stdout]   |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Point2` is never constructed
[INFO] [stdout]   --> garden/src/from.rs:24:8
[INFO] [stdout]    |
[INFO] [stdout] 24 | struct Point2 {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Person` is never constructed
[INFO] [stdout]   --> garden/src/from.rs:67:8
[INFO] [stdout]    |
[INFO] [stdout] 67 | struct Person {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated functions `new1` and `new2` are never used
[INFO] [stdout]   --> garden/src/from.rs:72:8
[INFO] [stdout]    |
[INFO] [stdout] 70 | impl Person {
[INFO] [stdout]    | ----------- associated functions in this implementation
[INFO] [stdout] 71 |     // 这个方法只接收String参数
[INFO] [stdout] 72 |     fn new1(name: String) -> Person {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 82 |     fn new2<N: Into<String>>(name: N) -> Person {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `example2` is never used
[INFO] [stdout]   --> garden/src/from.rs:88:4
[INFO] [stdout]    |
[INFO] [stdout] 88 | fn example2<T: FromStr>(s: &str) {
[INFO] [stdout]    |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `copy_dir_to` is never used
[INFO] [stdout]   --> garden/src/io.rs:55:4
[INFO] [stdout]    |
[INFO] [stdout] 55 | fn copy_dir_to(src: &Path, dst: &Path) -> io::Result<()> {
[INFO] [stdout]    |    ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `copy_to` is never used
[INFO] [stdout]   --> garden/src/io.rs:68:4
[INFO] [stdout]    |
[INFO] [stdout] 68 | fn copy_to(src: &Path, src_type: &fs::FileType, dst: &Path) -> io::Result<()> {
[INFO] [stdout]    |    ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `escape_time` is never used
[INFO] [stdout]   --> garden/src/iter.rs:64:4
[INFO] [stdout]    |
[INFO] [stdout] 64 | fn escape_time(c: Complex<f64>, limit: usize) -> Option<usize> {
[INFO] [stdout]    |    ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `parse_number` is never used
[INFO] [stdout]   --> garden/src/iter.rs:75:4
[INFO] [stdout]    |
[INFO] [stdout] 75 | fn parse_number<I>(tokens: &mut Peekable<I>) -> u32
[INFO] [stdout]    |    ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Flaky` is never constructed
[INFO] [stdout]   --> garden/src/iter.rs:99:8
[INFO] [stdout]    |
[INFO] [stdout] 99 | struct Flaky(bool);
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `I32Range` is never constructed
[INFO] [stdout]    --> garden/src/iter.rs:214:8
[INFO] [stdout]     |
[INFO] [stdout] 214 | struct I32Range {
[INFO] [stdout]     |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `MyEnum2` is never used
[INFO] [stdout]  --> garden/src/match.rs:2:6
[INFO] [stdout]   |
[INFO] [stdout] 2 | enum MyEnum2<'ax> {
[INFO] [stdout]   |      ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Pair` is never constructed
[INFO] [stdout]   --> garden/src/module.rs:28:8
[INFO] [stdout]    |
[INFO] [stdout] 28 | struct Pair<T> {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> garden/src/module.rs:35:8
[INFO] [stdout]    |
[INFO] [stdout] 33 | impl<T> Pair<T> {
[INFO] [stdout]    | --------------- associated function in this implementation
[INFO] [stdout] 34 |     // 第一次 impl
[INFO] [stdout] 35 |     fn new(x: T, y: T) -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `cmp_display` is never used
[INFO] [stdout]   --> garden/src/module.rs:42:8
[INFO] [stdout]    |
[INFO] [stdout] 40 | impl<T: Display + PartialOrd> Pair<T> {
[INFO] [stdout]    | ------------------------------------- method in this implementation
[INFO] [stdout] 41 |     // 第二次 impl
[INFO] [stdout] 42 |     fn cmp_display(&self) {
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Shape` is never used
[INFO] [stdout]  --> garden/src/module.rs:3:15
[INFO] [stdout]   |
[INFO] [stdout] 3 |     pub trait Shape {
[INFO] [stdout]   |               ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `A` is never constructed
[INFO] [stdout]  --> garden/src/module.rs:9:16
[INFO] [stdout]   |
[INFO] [stdout] 9 |     pub struct A;
[INFO] [stdout]   |                ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `doit` is never used
[INFO] [stdout]   --> garden/src/module.rs:19:8
[INFO] [stdout]    |
[INFO] [stdout] 19 |     fn doit() {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `JsonError` is never constructed
[INFO] [stdout]   --> garden/src/panic.rs:12:12
[INFO] [stdout]    |
[INFO] [stdout] 12 | pub struct JsonError {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `xa` is never used
[INFO] [stdout]   --> garden/src/panic.rs:38:4
[INFO] [stdout]    |
[INFO] [stdout] 38 | fn xa() -> Result<u64, JsonError> {
[INFO] [stdout]    |    ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Rectangle` is never constructed
[INFO] [stdout]  --> garden/src/pbj.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | struct Rectangle {
[INFO] [stdout]   |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `area`, `area2`, `area3`, `numbers`, and `new` are never used
[INFO] [stdout]   --> garden/src/pbj.rs:10:8
[INFO] [stdout]    |
[INFO] [stdout]  8 | impl Rectangle {
[INFO] [stdout]    | -------------- associated items in this implementation
[INFO] [stdout]  9 |     // 就像这样去实现 // area就是方法，被放在impl实现体中
[INFO] [stdout] 10 |     fn area(self) -> u32 {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 15 |     fn area2(&self) -> u32 {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 20 |     fn area3(&mut self) -> u32 {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 26 |     fn numbers(rows: u32, cols: u32) -> u32 {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 32 |     pub fn new(width: u32, height: u32) -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Shape` is never used
[INFO] [stdout]   --> garden/src/pbj.rs:81:6
[INFO] [stdout]    |
[INFO] [stdout] 81 | enum Shape {
[INFO] [stdout]    |      ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Number` is never used
[INFO] [stdout]   --> garden/src/pbj.rs:88:6
[INFO] [stdout]    |
[INFO] [stdout] 88 | enum Number {
[INFO] [stdout]    |      ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `MyEnum` is never used
[INFO] [stdout]   --> garden/src/pbj.rs:96:6
[INFO] [stdout]    |
[INFO] [stdout] 96 | enum MyEnum {
[INFO] [stdout]    |      ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `run` is never used
[INFO] [stdout]    --> garden/src/pbj.rs:104:8
[INFO] [stdout]     |
[INFO] [stdout] 103 | impl MyEnum {
[INFO] [stdout]     | ----------- method in this implementation
[INFO] [stdout] 104 |     fn run(&self, x: i32, y: i32) -> i32 {
[INFO] [stdout]     |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `Table` is never used
[INFO] [stdout]   --> garden/src/rc.rs:16:6
[INFO] [stdout]    |
[INFO] [stdout] 16 | type Table = HashMap<String, Vec<String>>;
[INFO] [stdout]    |      ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `show` is never used
[INFO] [stdout]   --> garden/src/rc.rs:18:4
[INFO] [stdout]    |
[INFO] [stdout] 18 | fn show(table: &Table) {
[INFO] [stdout]    |    ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `sort_works` is never used
[INFO] [stdout]   --> garden/src/rc.rs:27:4
[INFO] [stdout]    |
[INFO] [stdout] 27 | fn sort_works(table: &mut Table) {
[INFO] [stdout]    |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `takes_str` is never used
[INFO] [stdout]  --> garden/src/ref.rs:4:4
[INFO] [stdout]   |
[INFO] [stdout] 4 | fn takes_str(s: &str) {
[INFO] [stdout]   |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `takes_asref_str` is never used
[INFO] [stdout]   --> garden/src/ref.rs:11:4
[INFO] [stdout]    |
[INFO] [stdout] 11 | fn takes_asref_str<S: AsRef<str>>(s: S) {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `example` is never used
[INFO] [stdout]   --> garden/src/ref.rs:17:4
[INFO] [stdout]    |
[INFO] [stdout] 17 | fn example(slice: &str, borrow: &String, owned: String) {
[INFO] [stdout]    |    ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `ObjectSafe` is never used
[INFO] [stdout]  --> garden/src/safe.rs:2:7
[INFO] [stdout]   |
[INFO] [stdout] 2 | trait ObjectSafe {
[INFO] [stdout]   |       ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `NotObjectSafe` is never used
[INFO] [stdout]   --> garden/src/safe.rs:10:7
[INFO] [stdout]    |
[INFO] [stdout] 10 | trait NotObjectSafe {
[INFO] [stdout]    |       ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Atype` is never constructed
[INFO] [stdout]   --> garden/src/safe.rs:30:8
[INFO] [stdout]    |
[INFO] [stdout] 30 | struct Atype;
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Btype` is never constructed
[INFO] [stdout]   --> garden/src/safe.rs:34:8
[INFO] [stdout]    |
[INFO] [stdout] 34 | struct Btype;
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Ctype` is never constructed
[INFO] [stdout]   --> garden/src/safe.rs:38:8
[INFO] [stdout]    |
[INFO] [stdout] 38 | struct Ctype;
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `TraitA` is never used
[INFO] [stdout]   --> garden/src/safe.rs:40:7
[INFO] [stdout]    |
[INFO] [stdout] 40 | trait TraitA {}
[INFO] [stdout]    |       ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `doit` is never used
[INFO] [stdout]   --> garden/src/safe.rs:60:4
[INFO] [stdout]    |
[INFO] [stdout] 60 | fn doit(i: u32) -> Box<dyn TraitA> {
[INFO] [stdout]    |    ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `doit1111` is never used
[INFO] [stdout]   --> garden/src/safe.rs:83:4
[INFO] [stdout]    |
[INFO] [stdout] 83 | fn doit1111(x: impl TraitA) {}
[INFO] [stdout]    |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `doit11113` is never used
[INFO] [stdout]   --> garden/src/safe.rs:85:4
[INFO] [stdout]    |
[INFO] [stdout] 85 | fn doit11113<T: TraitA>(x: T) {}
[INFO] [stdout]    |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `doit11114` is never used
[INFO] [stdout]   --> garden/src/safe.rs:88:4
[INFO] [stdout]    |
[INFO] [stdout] 88 | fn doit11114(x: &dyn TraitA) {}
[INFO] [stdout]    |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `xx` is never used
[INFO] [stdout]   --> garden/src/safe.rs:96:4
[INFO] [stdout]    |
[INFO] [stdout] 96 | fn xx() {
[INFO] [stdout]    |    ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Point` is never constructed
[INFO] [stdout]  --> garden/src/trait.rs:6:8
[INFO] [stdout]   |
[INFO] [stdout] 6 | struct Point<T> {
[INFO] [stdout]   |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Point2` is never constructed
[INFO] [stdout]   --> garden/src/trait.rs:11:8
[INFO] [stdout]    |
[INFO] [stdout] 11 | struct Point2<T, U> {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `play` is never used
[INFO] [stdout]   --> garden/src/trait.rs:18:8
[INFO] [stdout]    |
[INFO] [stdout] 16 | impl<T> Point<T> {
[INFO] [stdout]    | ---------------- associated function in this implementation
[INFO] [stdout] 17 |     // 注意这一行
[INFO] [stdout] 18 |     fn play(n: T) {} // 注意这一行
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `doit` is never used
[INFO] [stdout]   --> garden/src/trait.rs:23:8
[INFO] [stdout]    |
[INFO] [stdout] 21 | impl Point<u32> {
[INFO] [stdout]    | --------------- associated function in this implementation
[INFO] [stdout] 22 |     // 这里，对具化类型 Point<u32> 继续做 impl
[INFO] [stdout] 23 |     fn doit() {}
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `SportType` is never used
[INFO] [stdout]   --> garden/src/trait.rs:26:6
[INFO] [stdout]    |
[INFO] [stdout] 26 | enum SportType {
[INFO] [stdout]    |      ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `TraitA` is never used
[INFO] [stdout]   --> garden/src/trait.rs:31:7
[INFO] [stdout]    |
[INFO] [stdout] 31 | trait TraitA {
[INFO] [stdout]    |       ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `print_trait_a` is never used
[INFO] [stdout]   --> garden/src/trait.rs:75:4
[INFO] [stdout]    |
[INFO] [stdout] 75 | fn print_trait_a<T: TraitA>(p: Point<T>) {
[INFO] [stdout]    |    ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Foo` is never constructed
[INFO] [stdout]   --> garden/src/trait.rs:83:8
[INFO] [stdout]    |
[INFO] [stdout] 83 | struct Foo;
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main112` is never used
[INFO] [stdout]   --> garden/src/trait.rs:85:4
[INFO] [stdout]    |
[INFO] [stdout] 85 | fn main112() {
[INFO] [stdout]    |    ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `TraitA2` is never used
[INFO] [stdout]    --> garden/src/trait.rs:358:7
[INFO] [stdout]     |
[INFO] [stdout] 358 | trait TraitA2 {
[INFO] [stdout]     |       ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `TraitA3` is never used
[INFO] [stdout]    --> garden/src/trait.rs:364:7
[INFO] [stdout]     |
[INFO] [stdout] 364 | trait TraitA3: TraitA2 {
[INFO] [stdout]     |       ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `TraitA4` is never used
[INFO] [stdout]    --> garden/src/trait.rs:369:7
[INFO] [stdout]     |
[INFO] [stdout] 369 | trait TraitA4
[INFO] [stdout]     |       ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `doit` is never used
[INFO] [stdout]    --> garden/src/trait.rs:377:4
[INFO] [stdout]     |
[INFO] [stdout] 377 | fn doit<T: TraitA2>(a: T::Mytype) {} // 这里在函数中使用了关联类型
[INFO] [stdout]     |    ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `TypeA` is never constructed
[INFO] [stdout]    --> garden/src/trait.rs:379:8
[INFO] [stdout]     |
[INFO] [stdout] 379 | struct TypeA;
[INFO] [stdout]     |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Foo2` is never constructed
[INFO] [stdout]    --> garden/src/trait.rs:387:8
[INFO] [stdout]     |
[INFO] [stdout] 387 | struct Foo2<T: TraitA2<Mytype = String>> {
[INFO] [stdout]     |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `AAAA` is never constructed
[INFO] [stdout]    --> garden/src/trait.rs:392:8
[INFO] [stdout]     |
[INFO] [stdout] 392 | struct AAAA;
[INFO] [stdout]     |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `doit22` is never used
[INFO] [stdout]    --> garden/src/trait.rs:411:4
[INFO] [stdout]     |
[INFO] [stdout] 411 | fn doit22<T>()
[INFO] [stdout]     |    ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `TraitA22` is never used
[INFO] [stdout]    --> garden/src/trait.rs:420:7
[INFO] [stdout]     |
[INFO] [stdout] 420 | trait TraitA22 {}
[INFO] [stdout]     |       ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `TraitB22` is never used
[INFO] [stdout]    --> garden/src/trait.rs:422:7
[INFO] [stdout]     |
[INFO] [stdout] 422 | trait TraitB22 {}
[INFO] [stdout]     |       ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `TraitA33` is never used
[INFO] [stdout]    --> garden/src/trait.rs:426:7
[INFO] [stdout]     |
[INFO] [stdout] 426 | trait TraitA33<T> {
[INFO] [stdout]     |       ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Atype` is never constructed
[INFO] [stdout]    --> garden/src/trait.rs:430:8
[INFO] [stdout]     |
[INFO] [stdout] 430 | struct Atype;
[INFO] [stdout]     |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `TraitA55` is never used
[INFO] [stdout]    --> garden/src/trait.rs:442:7
[INFO] [stdout]     |
[INFO] [stdout] 442 | trait TraitA55<T> {}
[INFO] [stdout]     |       ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Atype55` is never constructed
[INFO] [stdout]    --> garden/src/trait.rs:444:8
[INFO] [stdout]     |
[INFO] [stdout] 444 | struct Atype55<U> {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Btype` is never constructed
[INFO] [stdout]    --> garden/src/trait.rs:455:8
[INFO] [stdout]     |
[INFO] [stdout] 455 | struct Btype;
[INFO] [stdout]     |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Ctype` is never constructed
[INFO] [stdout]    --> garden/src/trait.rs:457:8
[INFO] [stdout]     |
[INFO] [stdout] 457 | struct Ctype;
[INFO] [stdout]     |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `TotalType` is never used
[INFO] [stdout]    --> garden/src/trait.rs:459:6
[INFO] [stdout]     |
[INFO] [stdout] 459 | enum TotalType {
[INFO] [stdout]     |      ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `doit3` is never used
[INFO] [stdout]    --> garden/src/trait.rs:464:4
[INFO] [stdout]     |
[INFO] [stdout] 464 | fn doit3(i: u32) -> TotalType {
[INFO] [stdout]     |    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `foo2` is never used
[INFO] [stdout]    --> garden/src/trait.rs:478:4
[INFO] [stdout]     |
[INFO] [stdout] 478 | fn foo2(a: &u32, b: &u32) {
[INFO] [stdout]     |    ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `MyEnum2` is never used
[INFO] [stdout]    --> garden/src/trait.rs:488:6
[INFO] [stdout]     |
[INFO] [stdout] 488 | enum MyEnum2<'ax> {
[INFO] [stdout]     |      ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `xxx` is never used
[INFO] [stdout]    --> garden/src/trait.rs:493:4
[INFO] [stdout]     |
[INFO] [stdout] 493 | fn xxx() {
[INFO] [stdout]     |    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Vegetable` is never used
[INFO] [stdout]    --> garden/src/trait.rs:515:7
[INFO] [stdout]     |
[INFO] [stdout] 515 | trait Vegetable {}
[INFO] [stdout]     |       ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Salad` is never constructed
[INFO] [stdout]    --> garden/src/trait.rs:517:8
[INFO] [stdout]     |
[INFO] [stdout] 517 | struct Salad<V: Vegetable> {
[INFO] [stdout]     |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `City` is never constructed
[INFO] [stdout]    --> garden/src/trait.rs:521:8
[INFO] [stdout]     |
[INFO] [stdout] 521 | struct City {}
[INFO] [stdout]     |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Salad3` is never constructed
[INFO] [stdout]    --> garden/src/trait.rs:525:8
[INFO] [stdout]     |
[INFO] [stdout] 525 | struct Salad3 {
[INFO] [stdout]     |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `count_selected_cities` is never used
[INFO] [stdout]    --> garden/src/trait.rs:528:4
[INFO] [stdout]     |
[INFO] [stdout] 528 | fn count_selected_cities<F>(cities: &Vec<City>, test_fn: F) -> usize
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `x` is never used
[INFO] [stdout]  --> garden/src/trait_asref.rs:3:4
[INFO] [stdout]   |
[INFO] [stdout] 3 | fn x() {
[INFO] [stdout]   |    ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `dot_product` is never used
[INFO] [stdout]   --> garden/src/trait_bibao.rs:60:4
[INFO] [stdout]    |
[INFO] [stdout] 60 | fn dot_product<const N: usize>(a: [f64; N], b: [f64; N]) -> f64 {
[INFO] [stdout]    |    ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Atype` is never constructed
[INFO] [stdout]  --> garden/src/trait_copy.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | struct Atype {
[INFO] [stdout]   |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Point` is never constructed
[INFO] [stdout]   --> garden/src/trait_copy.rs:10:8
[INFO] [stdout]    |
[INFO] [stdout] 10 | struct Point {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Point2` is never constructed
[INFO] [stdout]   --> garden/src/trait_copy.rs:17:8
[INFO] [stdout]    |
[INFO] [stdout] 17 | struct Point2 {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Color` is never constructed
[INFO] [stdout]   --> garden/src/trait_default.rs:25:8
[INFO] [stdout]    |
[INFO] [stdout] 25 | struct Color {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> garden/src/trait_default.rs:32:8
[INFO] [stdout]    |
[INFO] [stdout] 31 | impl Color {
[INFO] [stdout]    | ---------- associated function in this implementation
[INFO] [stdout] 32 |     fn new(r: u32, g: u32, b: u32) -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated functions `red`, `green`, and `blue` are never used
[INFO] [stdout]   --> garden/src/trait_default.rs:38:8
[INFO] [stdout]    |
[INFO] [stdout] 37 | impl Color {
[INFO] [stdout]    | ---------- associated functions in this implementation
[INFO] [stdout] 38 |     fn red(r: u32) -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 45 |     fn green(g: u32) -> Self {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 52 |     fn blue(b: u32) -> Self {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Selector` is never constructed
[INFO] [stdout]   --> garden/src/trait_deref.rs:11:8
[INFO] [stdout]    |
[INFO] [stdout] 11 | struct Selector<T> {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `show_it` is never used
[INFO] [stdout]   --> garden/src/trait_deref.rs:55:4
[INFO] [stdout]    |
[INFO] [stdout] 55 | fn show_it(thing: &char) {
[INFO] [stdout]    |    ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `show_it_generic` is never used
[INFO] [stdout]   --> garden/src/trait_deref.rs:58:4
[INFO] [stdout]    |
[INFO] [stdout] 58 | fn show_it_generic<T: Display>(thing: T) {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Appellation` is never constructed
[INFO] [stdout]  --> garden/src/trait_drop.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | struct Appellation {
[INFO] [stdout]   |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `echo` is never used
[INFO] [stdout]  --> garden/src/vegetables.rs:4:8
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub fn echo(a: i32) -> i32 {
[INFO] [stdout]   |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `get_index` is never used
[INFO] [stdout]   --> garden/src/web.rs:20:10
[INFO] [stdout]    |
[INFO] [stdout] 20 | async fn get_index() -> HttpResponse {
[INFO] [stdout]    |          ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `GcdParameters` is never constructed
[INFO] [stdout]   --> garden/src/web.rs:35:8
[INFO] [stdout]    |
[INFO] [stdout] 35 | struct GcdParameters {
[INFO] [stdout]    |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `post_gcd` is never used
[INFO] [stdout]   --> garden/src/web.rs:40:10
[INFO] [stdout]    |
[INFO] [stdout] 40 | async fn post_gcd(form: web::Form<GcdParameters>) -> HttpResponse {
[INFO] [stdout]    |          ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `gcd` is never used
[INFO] [stdout]   --> garden/src/web.rs:57:4
[INFO] [stdout]    |
[INFO] [stdout] 57 | fn gcd(mut n: u64, mut m: u64) -> u64 {
[INFO] [stdout]    |    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: static `STASH` is never used
[INFO] [stdout]   --> garden/src/width_ref.rs:20:12
[INFO] [stdout]    |
[INFO] [stdout] 20 | static mut STASH: &i32 = &128;
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `f` is never used
[INFO] [stdout]   --> garden/src/width_ref.rs:26:4
[INFO] [stdout]    |
[INFO] [stdout] 26 | fn f(p: &'static i32) {
[INFO] [stdout]    |    ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `S` is never constructed
[INFO] [stdout]   --> garden/src/width_ref.rs:37:8
[INFO] [stdout]    |
[INFO] [stdout] 37 | struct S {
[INFO] [stdout]    |        ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `S1` is never constructed
[INFO] [stdout]   --> garden/src/width_ref.rs:42:8
[INFO] [stdout]    |
[INFO] [stdout] 42 | struct S1<'a> {
[INFO] [stdout]    |        ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `S2` is never constructed
[INFO] [stdout]   --> garden/src/width_ref.rs:46:8
[INFO] [stdout]    |
[INFO] [stdout] 46 | struct S2 {
[INFO] [stdout]    |        ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `S3` is never constructed
[INFO] [stdout]   --> garden/src/width_ref.rs:52:12
[INFO] [stdout]    |
[INFO] [stdout] 52 |     struct S3<'a, 'b> {
[INFO] [stdout]    |            ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `anyhow::error::<impl anyhow::Error>::msg` that must be used
[INFO] [stdout]   --> garden/src/err.rs:27:5
[INFO] [stdout]    |
[INFO] [stdout] 27 |     anyhow!("Missing attribute: {}", "missing");
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 27 |     let _ = anyhow!("Missing attribute: {}", "missing");
[INFO] [stdout]    |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: std::result::Result<std::string::String, Infallible>
[INFO] [stdout]    --> garden/src/trait.rs:117:58
[INFO] [stdout]     |
[INFO] [stdout] 117 |     let path = std::env::var("IMPORTANT_PATH").unwrap_or("asdas".parse().unwrap());
[INFO] [stdout]     |                                                          ^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: std::result::Result<std::string::String, Infallible>
[INFO] [stdout]    --> garden/src/trait.rs:169:18
[INFO] [stdout]     |
[INFO] [stdout] 169 |     let y_year = year_from_input.parse::<String>().unwrap_or_default();
[INFO] [stdout]     |                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `garden` (lib) due to 2 previous errors; 164 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "cc7ffd2651c5f74dfd170404a82491a312ad791b14f76201fa9a80ecfbe5d18b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cc7ffd2651c5f74dfd170404a82491a312ad791b14f76201fa9a80ecfbe5d18b", kill_on_drop: false }`
[INFO] [stdout] cc7ffd2651c5f74dfd170404a82491a312ad791b14f76201fa9a80ecfbe5d18b
