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[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyuan-yuan-jia%2FAsyncRust" "/workspace/builds/worker-7-tc1/source", kill_on_drop: false }`
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[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/yuan-yuan-jia/AsyncRust
[INFO] finished tweaking git repo https://github.com/yuan-yuan-jia/AsyncRust
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[INFO] crate git repo https://github.com/yuan-yuan-jia/AsyncRust already has a lockfile, it will not be regenerated
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[INFO] [stdout] warning: unused macro definition: `try_join`
[INFO] [stdout]   --> ch03_02/src/main.rs:32:14
[INFO] [stdout]    |
[INFO] [stdout] 32 | macro_rules! try_join {
[INFO] [stdout]    |              ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_macros)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused macro definition: `try_join`
[INFO] [stdout]    --> ch03_01/src/main.rs:214:14
[INFO] [stdout]     |
[INFO] [stdout] 214 | macro_rules! try_join {
[INFO] [stdout]     |              ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_macros)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused macro definition: `try_join`
[INFO] [stdout]    --> ch03_01/src/main.rs:214:14
[INFO] [stdout]     |
[INFO] [stdout] 214 | macro_rules! try_join {
[INFO] [stdout]     |              ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_macros)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused macro definition: `try_join`
[INFO] [stdout]   --> ch03_02/src/main.rs:32:14
[INFO] [stdout]    |
[INFO] [stdout] 32 | macro_rules! try_join {
[INFO] [stdout]    |              ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_macros)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> ch03_02/src/main.rs:22:17
[INFO] [stdout]    |
[INFO] [stdout] 22 |             let mut results: Vec<()> = Vec::new();
[INFO] [stdout]    |                 ----^^^^^^^
[INFO] [stdout]    |                 |
[INFO] [stdout]    |                 help: remove this `mut`
[INFO] [stdout] ...
[INFO] [stdout] 74 |         join!(high, low);
[INFO] [stdout]    |         ---------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout]    = note: this warning originates in the macro `join` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `FutureOrderLable` is never used
[INFO] [stdout]   --> ch03_02/src/main.rs:88:7
[INFO] [stdout]    |
[INFO] [stdout] 88 | trait FutureOrderLable: Future {
[INFO] [stdout]    |       ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `CounterFuture` is never constructed
[INFO] [stdout]   --> ch03_02/src/main.rs:92:8
[INFO] [stdout]    |
[INFO] [stdout] 92 | struct CounterFuture {
[INFO] [stdout]    |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `AsyncSleep` is never constructed
[INFO] [stdout]    --> ch03_02/src/main.rs:117:8
[INFO] [stdout]     |
[INFO] [stdout] 117 | struct AsyncSleep {
[INFO] [stdout]     |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]    --> ch03_02/src/main.rs:122:8
[INFO] [stdout]     |
[INFO] [stdout] 121 | impl AsyncSleep {
[INFO] [stdout]     | --------------- associated function in this implementation
[INFO] [stdout] 122 |     fn new(duration: Duration) -> Self {
[INFO] [stdout]     |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `async_fn` is never used
[INFO] [stdout]    --> ch03_02/src/main.rs:142:10
[INFO] [stdout]     |
[INFO] [stdout] 142 | async fn async_fn() {
[INFO] [stdout]     |          ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: static `QUEUE` is never used
[INFO] [stdout]    --> ch03_02/src/main.rs:147:8
[INFO] [stdout]     |
[INFO] [stdout] 147 | static QUEUE: Lazy<flume::Sender<Runnable>> = Lazy::new(|| {
[INFO] [stdout]     |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> ch03_01/src/main.rs:205:17
[INFO] [stdout]     |
[INFO] [stdout] 205 |             let mut results: Vec<()> = Vec::new();
[INFO] [stdout]     |                 ----^^^^^^^
[INFO] [stdout]     |                 |
[INFO] [stdout]     |                 help: remove this `mut`
[INFO] [stdout] ...
[INFO] [stdout] 277 |     join!(t_one, t_two, t_three, t_four);
[INFO] [stdout]     |     ------------------------------------ in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout]     = note: this warning originates in the macro `join` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `FutureOrderLable` is never used
[INFO] [stdout]   --> ch03_01/src/main.rs:21:7
[INFO] [stdout]    |
[INFO] [stdout] 21 | trait FutureOrderLable: Future {
[INFO] [stdout]    |       ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `AsyncSleep` is never constructed
[INFO] [stdout]   --> ch03_01/src/main.rs:50:8
[INFO] [stdout]    |
[INFO] [stdout] 50 | struct AsyncSleep {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> ch03_01/src/main.rs:55:8
[INFO] [stdout]    |
[INFO] [stdout] 54 | impl AsyncSleep {
[INFO] [stdout]    | --------------- associated function in this implementation
[INFO] [stdout] 55 |     fn new(duration: Duration) -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: static `QUEUE` is never used
[INFO] [stdout]   --> ch03_01/src/main.rs:80:8
[INFO] [stdout]    |
[INFO] [stdout] 80 | static QUEUE: Lazy<flume::Sender<Runnable>> = Lazy::new(|| {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> ch03_02/src/main.rs:22:17
[INFO] [stdout]    |
[INFO] [stdout] 22 |             let mut results: Vec<()> = Vec::new();
[INFO] [stdout]    |                 ----^^^^^^^
[INFO] [stdout]    |                 |
[INFO] [stdout]    |                 help: remove this `mut`
[INFO] [stdout] ...
[INFO] [stdout] 74 |         join!(high, low);
[INFO] [stdout]    |         ---------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout]    = note: this warning originates in the macro `join` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `FutureOrderLable` is never used
[INFO] [stdout]   --> ch03_02/src/main.rs:88:7
[INFO] [stdout]    |
[INFO] [stdout] 88 | trait FutureOrderLable: Future {
[INFO] [stdout]    |       ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `CounterFuture` is never constructed
[INFO] [stdout]   --> ch03_02/src/main.rs:92:8
[INFO] [stdout]    |
[INFO] [stdout] 92 | struct CounterFuture {
[INFO] [stdout]    |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `AsyncSleep` is never constructed
[INFO] [stdout]    --> ch03_02/src/main.rs:117:8
[INFO] [stdout]     |
[INFO] [stdout] 117 | struct AsyncSleep {
[INFO] [stdout]     |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]    --> ch03_02/src/main.rs:122:8
[INFO] [stdout]     |
[INFO] [stdout] 121 | impl AsyncSleep {
[INFO] [stdout]     | --------------- associated function in this implementation
[INFO] [stdout] 122 |     fn new(duration: Duration) -> Self {
[INFO] [stdout]     |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `async_fn` is never used
[INFO] [stdout]    --> ch03_02/src/main.rs:142:10
[INFO] [stdout]     |
[INFO] [stdout] 142 | async fn async_fn() {
[INFO] [stdout]     |          ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: static `QUEUE` is never used
[INFO] [stdout]    --> ch03_02/src/main.rs:147:8
[INFO] [stdout]     |
[INFO] [stdout] 147 | static QUEUE: Lazy<flume::Sender<Runnable>> = Lazy::new(|| {
[INFO] [stdout]     |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> ch03_01/src/main.rs:205:17
[INFO] [stdout]     |
[INFO] [stdout] 205 |             let mut results: Vec<()> = Vec::new();
[INFO] [stdout]     |                 ----^^^^^^^
[INFO] [stdout]     |                 |
[INFO] [stdout]     |                 help: remove this `mut`
[INFO] [stdout] ...
[INFO] [stdout] 277 |     join!(t_one, t_two, t_three, t_four);
[INFO] [stdout]     |     ------------------------------------ in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout]     = note: this warning originates in the macro `join` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `FutureOrderLable` is never used
[INFO] [stdout]   --> ch03_01/src/main.rs:21:7
[INFO] [stdout]    |
[INFO] [stdout] 21 | trait FutureOrderLable: Future {
[INFO] [stdout]    |       ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `AsyncSleep` is never constructed
[INFO] [stdout]   --> ch03_01/src/main.rs:50:8
[INFO] [stdout]    |
[INFO] [stdout] 50 | struct AsyncSleep {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> ch03_01/src/main.rs:55:8
[INFO] [stdout]    |
[INFO] [stdout] 54 | impl AsyncSleep {
[INFO] [stdout]    | --------------- associated function in this implementation
[INFO] [stdout] 55 |     fn new(duration: Duration) -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: static `QUEUE` is never used
[INFO] [stdout]   --> ch03_01/src/main.rs:80:8
[INFO] [stdout]    |
[INFO] [stdout] 80 | static QUEUE: Lazy<flume::Sender<Runnable>> = Lazy::new(|| {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking zerofrom v0.1.6
[INFO] [stderr]     Checking yoke v0.8.0
[INFO] [stderr]     Checking zerovec v0.11.2
[INFO] [stderr]     Checking zerotrie v0.2.2
[INFO] [stderr]     Checking tinystr v0.8.1
[INFO] [stderr]     Checking potential_utf v0.1.2
[INFO] [stderr]     Checking icu_collections v2.0.0
[INFO] [stderr]     Checking icu_locale_core v2.0.0
[INFO] [stderr]     Checking icu_provider v2.0.0
[INFO] [stderr]     Checking icu_normalizer v2.0.0
[INFO] [stderr]     Checking icu_properties v2.0.1
[INFO] [stderr]     Checking idna_adapter v1.2.1
[INFO] [stderr]     Checking idna v1.0.3
[INFO] [stderr]     Checking url v2.5.4
[INFO] [stderr]     Checking tokio-util v0.7.15
[INFO] [stderr]     Checking tokio-native-tls v0.3.1
[INFO] [stderr]     Checking ch02_02 v0.1.0 (/opt/rustwide/workdir/ch02_02)
[INFO] [stderr]     Checking ch02_03 v0.1.0 (/opt/rustwide/workdir/ch02_03)
[INFO] [stderr]     Checking ch02_01 v0.1.0 (/opt/rustwide/workdir/ch02_01)
[INFO] [stderr]     Checking ch02_04 v0.1.0 (/opt/rustwide/workdir/ch02_04)
[INFO] [stderr]     Checking ch04_02 v0.1.0 (/opt/rustwide/workdir/ch04_02)
[INFO] [stderr]     Checking ch01_02 v0.1.0 (/opt/rustwide/workdir/ch01_02)
[INFO] [stdout] warning: unused macro definition: `try_join`
[INFO] [stdout]   --> ch04_02/src/main.rs:34:14
[INFO] [stdout]    |
[INFO] [stdout] 34 | macro_rules! try_join {
[INFO] [stdout]    |              ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_macros)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused macro definition: `try_join`
[INFO] [stdout]   --> ch04_02/src/main.rs:34:14
[INFO] [stdout]    |
[INFO] [stdout] 34 | macro_rules! try_join {
[INFO] [stdout]    |              ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_macros)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking async-native-tls v0.5.0
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> ch04_02/src/main.rs:24:17
[INFO] [stdout]    |
[INFO] [stdout] 24 |             let mut results: Vec<()> = Vec::new();
[INFO] [stdout]    |                 ----^^^^^^^
[INFO] [stdout]    |                 |
[INFO] [stdout]    |                 help: remove this `mut`
[INFO] [stdout] ...
[INFO] [stdout] 76 |         join!(high, low);
[INFO] [stdout]    |         ---------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout]    = note: this warning originates in the macro `join` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> ch04_02/src/main.rs:24:17
[INFO] [stdout]    |
[INFO] [stdout] 24 |             let mut results: Vec<()> = Vec::new();
[INFO] [stdout]    |                 ----^^^^^^^
[INFO] [stdout]    |                 |
[INFO] [stdout]    |                 help: remove this `mut`
[INFO] [stdout] ...
[INFO] [stdout] 76 |         join!(high, low);
[INFO] [stdout]    |         ---------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout]    = note: this warning originates in the macro `join` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `FutureOrderLable` is never used
[INFO] [stdout]   --> ch04_02/src/main.rs:90:7
[INFO] [stdout]    |
[INFO] [stdout] 90 | trait FutureOrderLable: Future {
[INFO] [stdout]    |       ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `CounterFuture` is never constructed
[INFO] [stdout]   --> ch04_02/src/main.rs:94:8
[INFO] [stdout]    |
[INFO] [stdout] 94 | struct CounterFuture {
[INFO] [stdout]    |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `AsyncSleep` is never constructed
[INFO] [stdout]    --> ch04_02/src/main.rs:119:8
[INFO] [stdout]     |
[INFO] [stdout] 119 | struct AsyncSleep {
[INFO] [stdout]     |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]    --> ch04_02/src/main.rs:124:8
[INFO] [stdout]     |
[INFO] [stdout] 123 | impl AsyncSleep {
[INFO] [stdout]     | --------------- associated function in this implementation
[INFO] [stdout] 124 |     fn new(duration: Duration) -> Self {
[INFO] [stdout]     |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `async_fn` is never used
[INFO] [stdout]    --> ch04_02/src/main.rs:144:10
[INFO] [stdout]     |
[INFO] [stdout] 144 | async fn async_fn() {
[INFO] [stdout]     |          ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: static `QUEUE` is never used
[INFO] [stdout]    --> ch04_02/src/main.rs:149:8
[INFO] [stdout]     |
[INFO] [stdout] 149 | static QUEUE: Lazy<flume::Sender<Runnable>> = Lazy::new(|| {
[INFO] [stdout]     |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `BackgroundProcess` is never constructed
[INFO] [stdout]    --> ch04_02/src/main.rs:265:8
[INFO] [stdout]     |
[INFO] [stdout] 265 | struct BackgroundProcess;
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `FutureOrderLable` is never used
[INFO] [stdout]   --> ch04_02/src/main.rs:90:7
[INFO] [stdout]    |
[INFO] [stdout] 90 | trait FutureOrderLable: Future {
[INFO] [stdout]    |       ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `CounterFuture` is never constructed
[INFO] [stdout]   --> ch04_02/src/main.rs:94:8
[INFO] [stdout]    |
[INFO] [stdout] 94 | struct CounterFuture {
[INFO] [stdout]    |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `AsyncSleep` is never constructed
[INFO] [stdout]    --> ch04_02/src/main.rs:119:8
[INFO] [stdout]     |
[INFO] [stdout] 119 | struct AsyncSleep {
[INFO] [stdout]     |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]    --> ch04_02/src/main.rs:124:8
[INFO] [stdout]     |
[INFO] [stdout] 123 | impl AsyncSleep {
[INFO] [stdout]     | --------------- associated function in this implementation
[INFO] [stdout] 124 |     fn new(duration: Duration) -> Self {
[INFO] [stdout]     |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `async_fn` is never used
[INFO] [stdout]    --> ch04_02/src/main.rs:144:10
[INFO] [stdout]     |
[INFO] [stdout] 144 | async fn async_fn() {
[INFO] [stdout]     |          ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: static `QUEUE` is never used
[INFO] [stdout]    --> ch04_02/src/main.rs:149:8
[INFO] [stdout]     |
[INFO] [stdout] 149 | static QUEUE: Lazy<flume::Sender<Runnable>> = Lazy::new(|| {
[INFO] [stdout]     |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `BackgroundProcess` is never constructed
[INFO] [stdout]    --> ch04_02/src/main.rs:265:8
[INFO] [stdout]     |
[INFO] [stdout] 265 | struct BackgroundProcess;
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking h2 v0.3.26
[INFO] [stderr]     Checking hyper v0.14.32
[INFO] [stderr]     Checking hyper-tls v0.5.0
[INFO] [stderr]     Checking ch04_01 v0.1.0 (/opt/rustwide/workdir/ch04_01)
[INFO] [stdout] warning: unused import: `io`
[INFO] [stdout]  --> ch04_01/src/main.rs:9:19
[INFO] [stdout]   |
[INFO] [stdout] 9 | use smol::{Async, io, prelude::*};
[INFO] [stdout]   |                   ^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused macro definition: `try_join`
[INFO] [stdout]   --> ch04_01/src/main.rs:38:14
[INFO] [stdout]    |
[INFO] [stdout] 38 | macro_rules! try_join {
[INFO] [stdout]    |              ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_macros)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `io`
[INFO] [stdout]  --> ch04_01/src/main.rs:9:19
[INFO] [stdout]   |
[INFO] [stdout] 9 | use smol::{Async, io, prelude::*};
[INFO] [stdout]   |                   ^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused macro definition: `try_join`
[INFO] [stdout]   --> ch04_01/src/main.rs:38:14
[INFO] [stdout]    |
[INFO] [stdout] 38 | macro_rules! try_join {
[INFO] [stdout]    |              ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_macros)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking reqwest v0.11.27
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> ch04_01/src/main.rs:28:17
[INFO] [stdout]    |
[INFO] [stdout] 28 |             let mut results: Vec<()> = Vec::new();
[INFO] [stdout]    |                 ----^^^^^^^
[INFO] [stdout]    |                 |
[INFO] [stdout]    |                 help: remove this `mut`
[INFO] [stdout] ...
[INFO] [stdout] 80 |         join!(high, low);
[INFO] [stdout]    |         ---------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout]    = note: this warning originates in the macro `join` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `cx`
[INFO] [stdout]    --> ch04_01/src/main.rs:305:30
[INFO] [stdout]     |
[INFO] [stdout] 305 |     fn poll_ready(&mut self, cx: &mut Context<'_>) -> Poll<std::result::Result<(), Self::Error>> {
[INFO] [stdout]     |                              ^^ help: if this is intentional, prefix it with an underscore: `_cx`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `FutureOrderLable` is never used
[INFO] [stdout]   --> ch04_01/src/main.rs:94:7
[INFO] [stdout]    |
[INFO] [stdout] 94 | trait FutureOrderLable: Future {
[INFO] [stdout]    |       ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `CounterFuture` is never constructed
[INFO] [stdout]   --> ch04_01/src/main.rs:98:8
[INFO] [stdout]    |
[INFO] [stdout] 98 | struct CounterFuture {
[INFO] [stdout]    |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `AsyncSleep` is never constructed
[INFO] [stdout]    --> ch04_01/src/main.rs:123:8
[INFO] [stdout]     |
[INFO] [stdout] 123 | struct AsyncSleep {
[INFO] [stdout]     |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]    --> ch04_01/src/main.rs:128:8
[INFO] [stdout]     |
[INFO] [stdout] 127 | impl AsyncSleep {
[INFO] [stdout]     | --------------- associated function in this implementation
[INFO] [stdout] 128 |     fn new(duration: Duration) -> Self {
[INFO] [stdout]     |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `async_fn` is never used
[INFO] [stdout]    --> ch04_01/src/main.rs:148:10
[INFO] [stdout]     |
[INFO] [stdout] 148 | async fn async_fn() {
[INFO] [stdout]     |          ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: static `QUEUE` is never used
[INFO] [stdout]    --> ch04_01/src/main.rs:153:8
[INFO] [stdout]     |
[INFO] [stdout] 153 | static QUEUE: Lazy<flume::Sender<Runnable>> = Lazy::new(|| {
[INFO] [stdout]     |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> ch04_01/src/main.rs:28:17
[INFO] [stdout]    |
[INFO] [stdout] 28 |             let mut results: Vec<()> = Vec::new();
[INFO] [stdout]    |                 ----^^^^^^^
[INFO] [stdout]    |                 |
[INFO] [stdout]    |                 help: remove this `mut`
[INFO] [stdout] ...
[INFO] [stdout] 80 |         join!(high, low);
[INFO] [stdout]    |         ---------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout]    = note: this warning originates in the macro `join` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `cx`
[INFO] [stdout]    --> ch04_01/src/main.rs:305:30
[INFO] [stdout]     |
[INFO] [stdout] 305 |     fn poll_ready(&mut self, cx: &mut Context<'_>) -> Poll<std::result::Result<(), Self::Error>> {
[INFO] [stdout]     |                              ^^ help: if this is intentional, prefix it with an underscore: `_cx`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `FutureOrderLable` is never used
[INFO] [stdout]   --> ch04_01/src/main.rs:94:7
[INFO] [stdout]    |
[INFO] [stdout] 94 | trait FutureOrderLable: Future {
[INFO] [stdout]    |       ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `CounterFuture` is never constructed
[INFO] [stdout]   --> ch04_01/src/main.rs:98:8
[INFO] [stdout]    |
[INFO] [stdout] 98 | struct CounterFuture {
[INFO] [stdout]    |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `AsyncSleep` is never constructed
[INFO] [stdout]    --> ch04_01/src/main.rs:123:8
[INFO] [stdout]     |
[INFO] [stdout] 123 | struct AsyncSleep {
[INFO] [stdout]     |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]    --> ch04_01/src/main.rs:128:8
[INFO] [stdout]     |
[INFO] [stdout] 127 | impl AsyncSleep {
[INFO] [stdout]     | --------------- associated function in this implementation
[INFO] [stdout] 128 |     fn new(duration: Duration) -> Self {
[INFO] [stdout]     |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `async_fn` is never used
[INFO] [stdout]    --> ch04_01/src/main.rs:148:10
[INFO] [stdout]     |
[INFO] [stdout] 148 | async fn async_fn() {
[INFO] [stdout]     |          ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: static `QUEUE` is never used
[INFO] [stdout]    --> ch04_01/src/main.rs:153:8
[INFO] [stdout]     |
[INFO] [stdout] 153 | static QUEUE: Lazy<flume::Sender<Runnable>> = Lazy::new(|| {
[INFO] [stdout]     |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking ch01_01 v0.1.0 (/opt/rustwide/workdir/ch01_01)
[INFO] [stdout] warning: unused import: `reqwest::Error`
[INFO] [stdout]  --> ch01_01/src/main.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use reqwest::Error;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::io::Write`
[INFO] [stdout]  --> ch01_01/src/main.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::io::Write;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Duration`, `Instant`, `Stdio`, and `fs::File`
[INFO] [stdout]  --> ch01_01/src/main.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 |     fs::File,
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout] 5 |     io::BufRead,
[INFO] [stdout] 6 |     process::{self, Command, Stdio},
[INFO] [stdout]   |                              ^^^^^
[INFO] [stdout] 7 |     time::{Duration, Instant},
[INFO] [stdout]   |            ^^^^^^^^  ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `reqwest::Error`
[INFO] [stdout]  --> ch01_01/src/main.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use reqwest::Error;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::io::Write`
[INFO] [stdout]  --> ch01_01/src/main.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::io::Write;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Duration`, `Instant`, `Stdio`, and `fs::File`
[INFO] [stdout]  --> ch01_01/src/main.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 |     fs::File,
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout] 5 |     io::BufRead,
[INFO] [stdout] 6 |     process::{self, Command, Stdio},
[INFO] [stdout]   |                              ^^^^^
[INFO] [stdout] 7 |     time::{Duration, Instant},
[INFO] [stdout]   |            ^^^^^^^^  ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `fibonacci` is never used
[INFO] [stdout]   --> ch01_01/src/main.rs:10:4
[INFO] [stdout]    |
[INFO] [stdout] 10 | fn fibonacci(n: u64) -> u64 {
[INFO] [stdout]    |    ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `run_processes` is never used
[INFO] [stdout]   --> ch01_01/src/main.rs:18:4
[INFO] [stdout]    |
[INFO] [stdout] 18 | fn run_processes() {
[INFO] [stdout]    |    ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `task` is never used
[INFO] [stdout]   --> ch01_01/src/main.rs:34:4
[INFO] [stdout]    |
[INFO] [stdout] 34 | fn task(no: usize) {
[INFO] [stdout]    |    ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `fibonacci` is never used
[INFO] [stdout]   --> ch01_01/src/main.rs:10:4
[INFO] [stdout]    |
[INFO] [stdout] 10 | fn fibonacci(n: u64) -> u64 {
[INFO] [stdout]    |    ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `run_processes` is never used
[INFO] [stdout]   --> ch01_01/src/main.rs:18:4
[INFO] [stdout]    |
[INFO] [stdout] 18 | fn run_processes() {
[INFO] [stdout]    |    ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `task` is never used
[INFO] [stdout]   --> ch01_01/src/main.rs:34:4
[INFO] [stdout]    |
[INFO] [stdout] 34 | fn task(no: usize) {
[INFO] [stdout]    |    ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 40.87s
[INFO] running `Command { std: "docker" "inspect" "271d9fa12e532eb834938ce1edb7cc211ccabe1ece483a4c3f4477e56aa86fee", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "271d9fa12e532eb834938ce1edb7cc211ccabe1ece483a4c3f4477e56aa86fee", kill_on_drop: false }`
[INFO] [stdout] 271d9fa12e532eb834938ce1edb7cc211ccabe1ece483a4c3f4477e56aa86fee
