[INFO] cloning repository https://github.com/Reso1mi/rust-demo
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Reso1mi/rust-demo" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FReso1mi%2Frust-demo", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FReso1mi%2Frust-demo'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] ef85346bdbeebbdd97fd82fb82eb2a23af3ea0ac
[INFO] checking Reso1mi/rust-demo against c60b92c03ca8a3b101eb9d57f51e2232690638c7 for pr-164148-crater-rollup
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FReso1mi%2Frust-demo" "/workspace/builds/worker-7-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/Reso1mi/rust-demo
[INFO] finished tweaking git repo https://github.com/Reso1mi/rust-demo
[INFO] tweaked toml for git repo https://github.com/Reso1mi/rust-demo written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/Reso1mi/rust-demo on toolchain c60b92c03ca8a3b101eb9d57f51e2232690638c7
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c60b92c03ca8a3b101eb9d57f51e2232690638c7" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/Reso1mi/rust-demo 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" "+c60b92c03ca8a3b101eb9d57f51e2232690638c7" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,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" "-m" "1610612736" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:77db811e55d90add9212f6832c23229e3de5f1c1f9905e8cb07319ea15df73ac" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] 86b574fc98bd1239cd363bf9581c53ca02102cb03e23210be947866af20e7f0a
[INFO] running `Command { std: "docker" "start" "86b574fc98bd1239cd363bf9581c53ca02102cb03e23210be947866af20e7f0a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "86b574fc98bd1239cd363bf9581c53ca02102cb03e23210be947866af20e7f0a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-w" "/opt/rustwide/workdir" "--user" "0:0" "86b574fc98bd1239cd363bf9581c53ca02102cb03e23210be947866af20e7f0a" "/opt/rustwide/cargo-home/bin/cargo" "+c60b92c03ca8a3b101eb9d57f51e2232690638c7" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "86b574fc98bd1239cd363bf9581c53ca02102cb03e23210be947866af20e7f0a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-w" "/opt/rustwide/workdir" "--user" "0:0" "86b574fc98bd1239cd363bf9581c53ca02102cb03e23210be947866af20e7f0a" "/opt/rustwide/cargo-home/bin/cargo" "+c60b92c03ca8a3b101eb9d57f51e2232690638c7" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
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[INFO] [stdout] warning: unused imports: `ops::Deref` and `self`
[INFO] [stdout]  --> src/bin/pin_1.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 |     ops::Deref,
[INFO] [stdout]   |     ^^^^^^^^^^
[INFO] [stdout] 5 |     pin::{self, Pin},
[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: `fmt::format`
[INFO] [stdout]  --> src/bin/async_mini_redis.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 |     fmt::format,
[INFO] [stdout]   |     ^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/bin/box_1.rs:35:9
[INFO] [stdout]    |
[INFO] [stdout] 35 |     let mut arr_s = vec!["1".to_string(), "2".to_string()];
[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: `f`
[INFO] [stdout]   --> src/bin/box_1.rs:36:9
[INFO] [stdout]    |
[INFO] [stdout] 36 |     let f = arr_s.index(0);
[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: `first`
[INFO] [stdout]   --> src/bin/box_1.rs:43:10
[INFO] [stdout]    |
[INFO] [stdout] 43 |     let (first, second) = (&arr[0], &arr[1]);
[INFO] [stdout]    |          ^^^^^ help: if this is intentional, prefix it with an underscore: `_first`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `second`
[INFO] [stdout]   --> src/bin/box_1.rs:43:17
[INFO] [stdout]    |
[INFO] [stdout] 43 |     let (first, second) = (&arr[0], &arr[1]);
[INFO] [stdout]    |                 ^^^^^^ help: if this is intentional, prefix it with an underscore: `_second`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `arr1`
[INFO] [stdout]    --> src/bin/box_1.rs:109:9
[INFO] [stdout]     |
[INFO] [stdout] 109 |     let arr1 = arr;
[INFO] [stdout]     |         ^^^^ help: if this is intentional, prefix it with an underscore: `_arr1`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `arr2`
[INFO] [stdout]    --> src/bin/box_1.rs:111:9
[INFO] [stdout]     |
[INFO] [stdout] 111 |     let arr2 = arr;
[INFO] [stdout]     |         ^^^^ help: if this is intentional, prefix it with an underscore: `_arr2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `arr3`
[INFO] [stdout]    --> src/bin/box_1.rs:113:9
[INFO] [stdout]     |
[INFO] [stdout] 113 |     let arr3 = arr;
[INFO] [stdout]     |         ^^^^ help: if this is intentional, prefix it with an underscore: `_arr3`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `List` is never used
[INFO] [stdout]   --> src/bin/box_1.rs:97:14
[INFO] [stdout]    |
[INFO] [stdout] 97 |         enum List {
[INFO] [stdout]    |              ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/bin/pin_1.rs:111:9
[INFO] [stdout]     |
[INFO] [stdout] 111 |     let mut this1 = unsafe { test1.get_unchecked_mut() }; // 绕过编译器检查
[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: variable does not need to be mutable
[INFO] [stdout]    --> src/bin/pin_1.rs:112:9
[INFO] [stdout]     |
[INFO] [stdout] 112 |     let mut this2 = unsafe { test2.get_unchecked_mut() }; // 绕过编译器检查
[INFO] [stdout]     |         ----^^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated functions `a3` and `a3_1` are never used
[INFO] [stdout]   --> src/bin/pin_1.rs:72:12
[INFO] [stdout]    |
[INFO] [stdout] 25 |     impl Test {
[INFO] [stdout]    |     --------- associated functions in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 72 |         fn a3(pin_self: Pin<&Self>) -> &str {
[INFO] [stdout]    |            ^^
[INFO] [stdout] ...
[INFO] [stdout] 77 |         fn a3_1<'a>(pin_self: Pin<&'a Self>) -> &'a str {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `pin_test` is never used
[INFO] [stdout]    --> src/bin/pin_1.rs:116:4
[INFO] [stdout]     |
[INFO] [stdout] 116 | fn pin_test() {
[INFO] [stdout]     |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `init`, `a`, and `b` are never used
[INFO] [stdout]    --> src/bin/pin_1.rs:123:12
[INFO] [stdout]     |
[INFO] [stdout] 122 |     impl Test {
[INFO] [stdout]     |     --------- associated items in this implementation
[INFO] [stdout] 123 |         fn new(s: &str) -> Self {
[INFO] [stdout]     |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 130 |         fn init(&mut self) {
[INFO] [stdout]     |            ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 134 |         fn a(&self) -> &str {
[INFO] [stdout]     |            ^
[INFO] [stdout] ...
[INFO] [stdout] 138 |         fn b(&self) -> &String {
[INFO] [stdout]     |            ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `raw_point_value_move` is never used
[INFO] [stdout]    --> src/bin/pin_1.rs:165:4
[INFO] [stdout]     |
[INFO] [stdout] 165 | fn raw_point_value_move() {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `sync::Arc`
[INFO] [stdout]  --> src/bin/async_demo_3_chan.rs:1:11
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::{sync::Arc, time::Duration};
[INFO] [stdout]   |           ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: useless conversion to the same type: `bytes::Bytes` async_mini_redis
[INFO] [stdout]   --> src/bin/async_mini_redis.rs:44:37
[INFO] [stdout]    |
[INFO] [stdout] 44 |                         Frame::Bulk(val.clone().into())
[INFO] [stdout]    |                                     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this method call relies on the `impl<T> Into<T> for T` blanket implementation and type inference, which is a semver hazard as a new `impl Into<_>` that affects your type might be added in the future causing type inference errors
[INFO] [stdout]    = note: `#[deny(self_type_conversion)]` on by default
[INFO] [stdout] help: consider removing the conversion call
[INFO] [stdout]    |
[INFO] [stdout] 44 -                         Frame::Bulk(val.clone().into())
[INFO] [stdout] 44 +                         Frame::Bulk(val.clone())
[INFO] [stdout]    |
[INFO] [stdout] help: you can use the fully-qualified path to avoid triggering this lint
[INFO] [stdout]    |
[INFO] [stdout] 44 -                         Frame::Bulk(val.clone().into())
[INFO] [stdout] 44 +                         Frame::Bulk(<bytes::Bytes as Into<_>>::into(val.clone()))
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `rust-demo` (bin "async_mini_redis" test) due to 1 previous error; 1 warning emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] warning: use of deprecated module `std::i32`: all constants in this module replaced by associated constants on the type
[INFO] [stdout]  --> src/bin/generics_1.rs:1:10
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::i32;
[INFO] [stdout]   |          ^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated constant `std::i32::MIN`: replaced by the `MIN` associated constant on this type
[INFO] [stdout]   --> src/bin/generics_1.rs:26:24
[INFO] [stdout]    |
[INFO] [stdout] 26 |     let mut max = i32::MIN;
[INFO] [stdout]    |                        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `p`
[INFO] [stdout]   --> src/bin/generics_1.rs:21:9
[INFO] [stdout]    |
[INFO] [stdout] 21 |     let p = Point { x: 1, y: 2 };
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_p`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `test1` is never used
[INFO] [stdout]  --> src/bin/async_demo_3_chan.rs:3:4
[INFO] [stdout]   |
[INFO] [stdout] 3 | fn test1() {
[INFO] [stdout]   |    ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `test2` is never used
[INFO] [stdout]   --> src/bin/async_demo_3_chan.rs:15:4
[INFO] [stdout]    |
[INFO] [stdout] 15 | fn test2() {
[INFO] [stdout]    |    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `test3` is never used
[INFO] [stdout]   --> src/bin/async_demo_3_chan.rs:39:4
[INFO] [stdout]    |
[INFO] [stdout] 39 | fn test3() {
[INFO] [stdout]    |    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `test4` is never used
[INFO] [stdout]   --> src/bin/async_demo_3_chan.rs:69:4
[INFO] [stdout]    |
[INFO] [stdout] 69 | fn test4() {
[INFO] [stdout]    |    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `x` and `y` are never read
[INFO] [stdout]  --> src/bin/generics_1.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | struct Point<T, U> {
[INFO] [stdout]   |        ----- fields in this struct
[INFO] [stdout] 4 |     x: T,
[INFO] [stdout]   |     ^
[INFO] [stdout] 5 |     y: U,
[INFO] [stdout]   |     ^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `get_x` and `mixup` are never used
[INFO] [stdout]   --> src/bin/generics_1.rs:9:8
[INFO] [stdout]    |
[INFO] [stdout]  8 | impl<T, U> Point<T, U> {
[INFO] [stdout]    | ---------------------- methods in this implementation
[INFO] [stdout]  9 |     fn get_x(&self) -> &T {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 13 |     fn mixup<Z, W>(self, p: Point<U, W>) -> Point<T, W> {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `largest` is never used
[INFO] [stdout]   --> src/bin/generics_1.rs:34:4
[INFO] [stdout]    |
[INFO] [stdout] 34 | fn largest<T: PartialOrd>(list: &Vec<T>) -> &T {
[INFO] [stdout]    |    ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `largest_2` is never used
[INFO] [stdout]   --> src/bin/generics_1.rs:43:4
[INFO] [stdout]    |
[INFO] [stdout] 43 | fn largest_2<T: PartialOrd + Copy>(list: &Vec<T>) -> T {
[INFO] [stdout]    |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]   --> src/bin/lifetime_3.rs:47:9
[INFO] [stdout]    |
[INFO] [stdout] 47 |     let i = list.get_interface_2();
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `c`
[INFO] [stdout]   --> src/bin/lifetime_3.rs:69:9
[INFO] [stdout]    |
[INFO] [stdout] 69 |     let c = get();
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_c`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `manager` is never read
[INFO] [stdout]  --> src/bin/lifetime_3.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | struct Interface<'a, 'b> {
[INFO] [stdout]   |        --------- field in this struct
[INFO] [stdout] 2 |     manager: &'b mut Manager<'a>,
[INFO] [stdout]   |     ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `noop` is never used
[INFO] [stdout]  --> src/bin/lifetime_3.rs:6:12
[INFO] [stdout]   |
[INFO] [stdout] 5 | impl<'a, 'b> Interface<'a, 'b> {
[INFO] [stdout]   | ------------------------------ method in this implementation
[INFO] [stdout] 6 |     pub fn noop(self) {
[INFO] [stdout]   |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `get` is never used
[INFO] [stdout]   --> src/bin/lifetime_3.rs:64:4
[INFO] [stdout]    |
[INFO] [stdout] 64 | fn get() -> &'static String {
[INFO] [stdout]    |    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `a` is never used
[INFO] [stdout]   --> src/bin/lifetime_3.rs:68:4
[INFO] [stdout]    |
[INFO] [stdout] 68 | fn a() {
[INFO] [stdout]    |    ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::process::Output`
[INFO] [stdout]  --> src/bin/async_2.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::process::Output;
[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 variable: `future_one`
[INFO] [stdout]   --> src/bin/async_2.rs:55:13
[INFO] [stdout]    |
[INFO] [stdout] 55 |         let future_one = async move {
[INFO] [stdout]    |             ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_future_one`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `foo` is never used
[INFO] [stdout]  --> src/bin/async_2.rs:5:10
[INFO] [stdout]   |
[INFO] [stdout] 5 | async fn foo() -> u8 {
[INFO] [stdout]   |          ^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `bar` is never used
[INFO] [stdout]  --> src/bin/async_2.rs:9:4
[INFO] [stdout]   |
[INFO] [stdout] 9 | fn bar() -> impl Future<Output = u8> {
[INFO] [stdout]   |    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `blocks` is never used
[INFO] [stdout]   --> src/bin/async_2.rs:32:14
[INFO] [stdout]    |
[INFO] [stdout] 32 |     async fn blocks() {
[INFO] [stdout]    |              ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `blocks_2` is never used
[INFO] [stdout]   --> src/bin/async_2.rs:52:14
[INFO] [stdout]    |
[INFO] [stdout] 52 |     async fn blocks_2<'a>(my_string: &'a String) -> impl Future<Output = ()> + 'a {
[INFO] [stdout]    |              ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `foo` is never used
[INFO] [stdout]   --> src/bin/async_2.rs:77:14
[INFO] [stdout]    |
[INFO] [stdout] 77 |     async fn foo(x: &u8) -> u8 {
[INFO] [stdout]    |              ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `foo_expanded` is never used
[INFO] [stdout]   --> src/bin/async_2.rs:82:8
[INFO] [stdout]    |
[INFO] [stdout] 82 |     fn foo_expanded<'a>(x: &'a u8) -> impl Future<Output = u8> + 'a {
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `good` is never used
[INFO] [stdout]   --> src/bin/async_2.rs:94:8
[INFO] [stdout]    |
[INFO] [stdout] 94 |     fn good() -> impl Future<Output = u8> + 'static {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `good2` is never used
[INFO] [stdout]    --> src/bin/async_2.rs:102:8
[INFO] [stdout]     |
[INFO] [stdout] 102 |     fn good2() -> impl Future<Output = u8> + 'static {
[INFO] [stdout]     |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `borrow_x` is never used
[INFO] [stdout]    --> src/bin/async_2.rs:110:14
[INFO] [stdout]     |
[INFO] [stdout] 110 |     async fn borrow_x(x: &u8) -> u8 {
[INFO] [stdout]     |              ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `String::as_bytes` that must be used
[INFO] [stdout]   --> src/bin/async_2.rs:30:5
[INFO] [stdout]    |
[INFO] [stdout] 30 |     z.as_bytes();
[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] 30 |     let _ = z.as_bytes();
[INFO] [stdout]    |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "86b574fc98bd1239cd363bf9581c53ca02102cb03e23210be947866af20e7f0a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "86b574fc98bd1239cd363bf9581c53ca02102cb03e23210be947866af20e7f0a", kill_on_drop: false }`
[INFO] [stdout] 86b574fc98bd1239cd363bf9581c53ca02102cb03e23210be947866af20e7f0a
