[INFO] cloning repository https://github.com/chinaxxren/learning
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/chinaxxren/learning" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fchinaxxren%2Flearning", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fchinaxxren%2Flearning'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 4d038113de5992f0338a1f95318a9787522def3c
[INFO] checking chinaxxren/learning against try#0611f7de057c584b8771102fde7aed6c70c71d3b for pr-146440
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fchinaxxren%2Flearning" "/workspace/builds/worker-5-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/chinaxxren/learning
[INFO] finished tweaking git repo https://github.com/chinaxxren/learning
[INFO] tweaked toml for git repo https://github.com/chinaxxren/learning written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/chinaxxren/learning on toolchain 0611f7de057c584b8771102fde7aed6c70c71d3b
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+0611f7de057c584b8771102fde7aed6c70c71d3b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/chinaxxren/learning 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" "+0611f7de057c584b8771102fde7aed6c70c71d3b" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+0611f7de057c584b8771102fde7aed6c70c71d3b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e9b4ce95d416c729a1e992842d689576270e524c41dd421cca74ff470e47e5c2
[INFO] running `Command { std: "docker" "start" "-a" "e9b4ce95d416c729a1e992842d689576270e524c41dd421cca74ff470e47e5c2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e9b4ce95d416c729a1e992842d689576270e524c41dd421cca74ff470e47e5c2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e9b4ce95d416c729a1e992842d689576270e524c41dd421cca74ff470e47e5c2", kill_on_drop: false }`
[INFO] [stdout] e9b4ce95d416c729a1e992842d689576270e524c41dd421cca74ff470e47e5c2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+0611f7de057c584b8771102fde7aed6c70c71d3b" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 45606f3d3dcb4fbde0f4a4546fa24a86c18e68329d99f85626ed7b5273fcc308
[INFO] running `Command { std: "docker" "start" "-a" "45606f3d3dcb4fbde0f4a4546fa24a86c18e68329d99f85626ed7b5273fcc308", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.161
[INFO] [stderr]     Checking bytes v1.8.0
[INFO] [stderr]     Checking rust_lib v0.1.0 (/opt/rustwide/workdir/rust-lib)
[INFO] [stderr]     Checking either v1.13.0
[INFO] [stderr]    Compiling syn v2.0.87
[INFO] [stderr]     Checking event-listener v5.3.1
[INFO] [stderr]    Compiling rustix v0.38.39
[INFO] [stderr]     Checking futures-lite v2.4.0
[INFO] [stderr]     Checking linux-raw-sys v0.4.14
[INFO] [stderr]     Checking rayon v1.10.0
[INFO] [stderr]     Checking event-listener-strategy v0.5.2
[INFO] [stderr]     Checking piper v0.2.4
[INFO] [stderr]     Checking async-lock v3.4.0
[INFO] [stderr]     Checking async-channel v2.3.1
[INFO] [stderr]     Checking value-bag v1.10.0
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]     Checking log v0.4.22
[INFO] [stderr]     Checking async-channel v1.9.0
[INFO] [stderr]     Checking kv-log-macro v1.0.7
[INFO] [stderr]     Checking async-executor v1.13.1
[INFO] [stderr]     Checking parking_lot_core v0.9.10
[INFO] [stderr]     Checking mio v1.0.2
[INFO] [stderr]     Checking socket2 v0.5.7
[INFO] [stderr]     Checking signal-hook-registry v1.4.2
[INFO] [stderr]     Checking parking_lot v0.12.3
[INFO] [stderr]     Checking blocking v1.6.1
[INFO] [stderr]     Checking rust-channel v0.1.0 (/opt/rustwide/workdir/rust-channel)
[INFO] [stderr]     Checking rust-thread v0.1.0 (/opt/rustwide/workdir/rust-thread)
[INFO] [stdout] warning: method `try_recv` is never used
[INFO] [stdout]   --> rust-channel/src/main.rs:24:8
[INFO] [stdout]    |
[INFO] [stdout] 13 | impl<T> Receiver<T> {
[INFO] [stdout]    | ------------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 24 |     fn try_recv(&self) -> Option<T> {
[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 `try_recv` is never used
[INFO] [stdout]   --> rust-channel/src/main.rs:24:8
[INFO] [stdout]    |
[INFO] [stdout] 13 | impl<T> Receiver<T> {
[INFO] [stdout]    | ------------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 24 |     fn try_recv(&self) -> Option<T> {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `id` is never read
[INFO] [stdout]   --> rust-thread/src/main.rs:58:5
[INFO] [stdout]    |
[INFO] [stdout] 57 | struct Worker {
[INFO] [stdout]    |        ------ field in this struct
[INFO] [stdout] 58 |     id: usize,
[INFO] [stdout]    |     ^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `id` is never read
[INFO] [stdout]   --> rust-thread/src/main.rs:58:5
[INFO] [stdout]    |
[INFO] [stdout] 57 | struct Worker {
[INFO] [stdout]    |        ------ field in this struct
[INFO] [stdout] 58 |     id: usize,
[INFO] [stdout]    |     ^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling tokio-macros v2.4.0
[INFO] [stderr]    Compiling futures-macro v0.3.31
[INFO] [stderr]     Checking tokio v1.41.0
[INFO] [stderr]    Compiling async-attributes v1.1.2
[INFO] [stderr]     Checking futures-util v0.3.31
[INFO] [stderr]     Checking polling v3.7.3
[INFO] [stderr]     Checking async-io v2.3.4
[INFO] [stderr]     Checking async-global-executor v2.4.1
[INFO] [stderr]     Checking async-std v1.13.0
[INFO] [stderr]     Checking futures-executor v0.3.31
[INFO] [stderr]     Checking futures v0.3.31
[INFO] [stderr]     Checking tokio-util v0.7.12
[INFO] [stderr]     Checking rust_demo v0.1.0 (/opt/rustwide/workdir/rust-demo)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> rust-demo/mem/3_take_replace.rs:34:9
[INFO] [stdout]    |
[INFO] [stdout] 34 |     let mut next = node.take_next();
[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 import: `std::mem`
[INFO] [stdout]  --> rust-demo/mem/11_unlock.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::mem;
[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: `std::ptr`
[INFO] [stdout]  --> rust-demo/mem/11_unlock.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::ptr;
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::thread::JoinHandle`
[INFO] [stdout]  --> rust-demo/mem/11_unlock.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use std::thread::JoinHandle;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `value` is never read
[INFO] [stdout]   --> rust-demo/mem/11_unlock.rs:19:5
[INFO] [stdout]    |
[INFO] [stdout] 15 | struct Node<T> {
[INFO] [stdout]    |        ---- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 19 |     value: T,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `Final` is never constructed
[INFO] [stdout]  --> rust-demo/mem/9_state.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | enum State {
[INFO] [stdout]   |      ----- variant in this enum
[INFO] [stdout] ...
[INFO] [stdout] 6 |     Final,
[INFO] [stdout]   |     ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `data` is never read
[INFO] [stdout]   --> rust-demo/mem/9_state.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 10 | struct StateMachine {
[INFO] [stdout]    |        ------------ field in this struct
[INFO] [stdout] 11 |     state: State,
[INFO] [stdout] 12 |     data: Vec<u8>,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `data` is never read
[INFO] [stdout]  --> rust-demo/mem/4_forget.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 4 |  struct NeedCleanup {
[INFO] [stdout]   |         ----------- field in this struct
[INFO] [stdout] 5 |     data: Vec<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: unnecessary transmute
[INFO] [stdout]  --> rust-demo/mem/5_transmute.rs:9:30
[INFO] [stdout]   |
[INFO] [stdout] 9 |         let bytes: [u8; 4] = mem::transmute(num);
[INFO] [stdout]   |                              ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = help: there's also `to_le_bytes` and `to_be_bytes` if you expect a particular byte order
[INFO] [stdout]   = note: `#[warn(unnecessary_transmutes)]` on by default
[INFO] [stdout] help: replace this with
[INFO] [stdout]   |
[INFO] [stdout] 9 -         let bytes: [u8; 4] = mem::transmute(num);
[INFO] [stdout] 9 +         let bytes: [u8; 4] = i32::to_ne_bytes(num);
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary transmute
[INFO] [stdout]  --> rust-demo/mem/5_transmute.rs:9:30
[INFO] [stdout]   |
[INFO] [stdout] 9 |         let bytes: [u8; 4] = mem::transmute(num);
[INFO] [stdout]   |                              ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = help: there's also `to_le_bytes` and `to_be_bytes` if you expect a particular byte order
[INFO] [stdout]   = note: `#[warn(unnecessary_transmutes)]` on by default
[INFO] [stdout] help: replace this with
[INFO] [stdout]   |
[INFO] [stdout] 9 -         let bytes: [u8; 4] = mem::transmute(num);
[INFO] [stdout] 9 +         let bytes: [u8; 4] = i32::to_ne_bytes(num);
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `data` is never read
[INFO] [stdout]  --> rust-demo/mem/4_forget.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 4 |  struct NeedCleanup {
[INFO] [stdout]   |         ----------- field in this struct
[INFO] [stdout] 5 |     data: Vec<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: unused import: `std::mem`
[INFO] [stdout]  --> rust-demo/mem/11_unlock.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::mem;
[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: `std::ptr`
[INFO] [stdout]  --> rust-demo/mem/11_unlock.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::ptr;
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::thread::JoinHandle`
[INFO] [stdout]  --> rust-demo/mem/11_unlock.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use std::thread::JoinHandle;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `value` is never read
[INFO] [stdout]   --> rust-demo/mem/11_unlock.rs:19:5
[INFO] [stdout]    |
[INFO] [stdout] 15 | struct Node<T> {
[INFO] [stdout]    |        ---- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 19 |     value: T,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `Final` is never constructed
[INFO] [stdout]  --> rust-demo/mem/9_state.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | enum State {
[INFO] [stdout]   |      ----- variant in this enum
[INFO] [stdout] ...
[INFO] [stdout] 6 |     Final,
[INFO] [stdout]   |     ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `data` is never read
[INFO] [stdout]   --> rust-demo/mem/9_state.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 10 | struct StateMachine {
[INFO] [stdout]    |        ------------ field in this struct
[INFO] [stdout] 11 |     state: State,
[INFO] [stdout] 12 |     data: Vec<u8>,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> rust-demo/mem/3_take_replace.rs:34:9
[INFO] [stdout]    |
[INFO] [stdout] 34 |     let mut next = node.take_next();
[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] [stderr]     Checking rust_async v0.1.0 (/opt/rustwide/workdir/rust-async)
[INFO] [stdout] warning: unused imports: `Duration` and `sleep`
[INFO] [stdout]  --> rust-async/src/demo/2_await.rs:2:19
[INFO] [stdout]   |
[INFO] [stdout] 2 | use tokio::time::{sleep, Duration};
[INFO] [stdout]   |                   ^^^^^  ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `a` and `b` are never used
[INFO] [stdout]   --> rust-async/src/demo/9_test_pin.rs:27:8
[INFO] [stdout]    |
[INFO] [stdout] 12 | impl Test {
[INFO] [stdout]    | --------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 27 |     fn a(self: Pin<&Self>) -> &str {
[INFO] [stdout]    |        ^
[INFO] [stdout] ...
[INFO] [stdout] 31 |     fn b(self: Pin<&Self>) -> &String {
[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 `a` and `b` are never used
[INFO] [stdout]   --> rust-async/src/demo/9_test_pin.rs:27:8
[INFO] [stdout]    |
[INFO] [stdout] 12 | impl Test {
[INFO] [stdout]    | --------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 27 |     fn a(self: Pin<&Self>) -> &str {
[INFO] [stdout]    |        ^
[INFO] [stdout] ...
[INFO] [stdout] 31 |     fn b(self: Pin<&Self>) -> &String {
[INFO] [stdout]    |        ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `core::panic`
[INFO] [stdout]  --> rust-async/src/other/selectables.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use core::panic;
[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: `new_executor_and_spawner`
[INFO] [stdout]   --> rust-async/src/other/main.rs:19:23
[INFO] [stdout]    |
[INFO] [stdout] 19 | use crate::executor::{new_executor_and_spawner};
[INFO] [stdout]    |                       ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `pin_utils::pin_mut`
[INFO] [stdout]   --> rust-async/src/other/main.rs:27:5
[INFO] [stdout]    |
[INFO] [stdout] 27 | use pin_utils::pin_mut;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> rust-async/src/other/concurrent_iter.rs:32:5
[INFO] [stdout]    |
[INFO] [stdout] 32 |     mut stream: Pin<&mut dyn Stream<Item = Result<u8, io::Error>>>,
[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 import: `FutureExt`
[INFO] [stdout]   --> rust-async/src/other/main.rs:26:49
[INFO] [stdout]    |
[INFO] [stdout] 26 | use futures::{channel::mpsc, stream::StreamExt, FutureExt};
[INFO] [stdout]    |                                                 ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `tx1`
[INFO] [stdout]   --> rust-async/src/example/my_select.rs:31:10
[INFO] [stdout]    |
[INFO] [stdout] 31 |     let (tx1, rx1) = oneshot::channel();
[INFO] [stdout]    |          ^^^ help: if this is intentional, prefix it with an underscore: `_tx1`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `tx2`
[INFO] [stdout]   --> rust-async/src/example/my_select.rs:32:10
[INFO] [stdout]    |
[INFO] [stdout] 32 |     let (tx2, rx2) = oneshot::channel();
[INFO] [stdout]    |          ^^^ help: if this is intentional, prefix it with an underscore: `_tx2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main` is never used
[INFO] [stdout]   --> rust-async/src/example/delay.rs:35:10
[INFO] [stdout]    |
[INFO] [stdout] 35 | async fn main() {
[INFO] [stdout]    |          ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: struct `SocketRead` is never constructed
[INFO] [stdout]   --> rust-async/src/other/simplefuture.rs:40:12
[INFO] [stdout]    |
[INFO] [stdout] 40 | pub struct SocketRead<'a> {
[INFO] [stdout]    |            ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `pub` struct has private fields, no public constructor, and is not otherwise reachable through the external API, so consider providing a public constructor or removing it
[INFO] [stdout]    = note: `#[deny(unused_unconstructable_pub_struct)]` (part of `#[deny(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: struct `Joinm` is never constructed
[INFO] [stdout]   --> rust-async/src/other/simplefuture.rs:67:12
[INFO] [stdout]    |
[INFO] [stdout] 67 | pub struct Joinm<FutureA, FutureB> {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `pub` struct has private fields, no public constructor, and is not otherwise reachable through the external API, so consider providing a public constructor or removing it
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: struct `AndThen` is never constructed
[INFO] [stdout]    --> rust-async/src/other/simplefuture.rs:102:12
[INFO] [stdout]     |
[INFO] [stdout] 102 | pub struct AndThen<FutureA, FutureB> {
[INFO] [stdout]     |            ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `pub` struct has private fields, no public constructor, and is not otherwise reachable through the external API, so consider providing a public constructor or removing it
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `core::panic`
[INFO] [stdout]  --> rust-async/src/other/selectables.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use core::panic;
[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: `new_executor_and_spawner`
[INFO] [stdout]   --> rust-async/src/other/main.rs:19:23
[INFO] [stdout]    |
[INFO] [stdout] 19 | use crate::executor::{new_executor_and_spawner};
[INFO] [stdout]    |                       ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `pin_utils::pin_mut`
[INFO] [stdout]   --> rust-async/src/other/main.rs:27:5
[INFO] [stdout]    |
[INFO] [stdout] 27 | use pin_utils::pin_mut;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `rust_async` (bin "other") due to 3 previous errors; 5 warnings emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] warning: unused imports: `Duration` and `sleep`
[INFO] [stdout]  --> rust-async/src/demo/2_await.rs:2:19
[INFO] [stdout]   |
[INFO] [stdout] 2 | use tokio::time::{sleep, Duration};
[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]   --> rust-async/src/other/concurrent_iter.rs:32:5
[INFO] [stdout]    |
[INFO] [stdout] 32 |     mut stream: Pin<&mut dyn Stream<Item = Result<u8, io::Error>>>,
[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 import: `FutureExt`
[INFO] [stdout]   --> rust-async/src/other/main.rs:26:49
[INFO] [stdout]    |
[INFO] [stdout] 26 | use futures::{channel::mpsc, stream::StreamExt, FutureExt};
[INFO] [stdout]    |                                                 ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: struct `SocketRead` is never constructed
[INFO] [stdout]   --> rust-async/src/other/simplefuture.rs:40:12
[INFO] [stdout]    |
[INFO] [stdout] 40 | pub struct SocketRead<'a> {
[INFO] [stdout]    |            ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `pub` struct has private fields, no public constructor, and is not otherwise reachable through the external API, so consider providing a public constructor or removing it
[INFO] [stdout]    = note: `#[deny(unused_unconstructable_pub_struct)]` (part of `#[deny(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: struct `Joinm` is never constructed
[INFO] [stdout]   --> rust-async/src/other/simplefuture.rs:67:12
[INFO] [stdout]    |
[INFO] [stdout] 67 | pub struct Joinm<FutureA, FutureB> {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `pub` struct has private fields, no public constructor, and is not otherwise reachable through the external API, so consider providing a public constructor or removing it
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: struct `AndThen` is never constructed
[INFO] [stdout]    --> rust-async/src/other/simplefuture.rs:102:12
[INFO] [stdout]     |
[INFO] [stdout] 102 | pub struct AndThen<FutureA, FutureB> {
[INFO] [stdout]     |            ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `pub` struct has private fields, no public constructor, and is not otherwise reachable through the external API, so consider providing a public constructor or removing it
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `rust_async` (bin "other" test) due to 3 previous errors; 5 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "45606f3d3dcb4fbde0f4a4546fa24a86c18e68329d99f85626ed7b5273fcc308", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "45606f3d3dcb4fbde0f4a4546fa24a86c18e68329d99f85626ed7b5273fcc308", kill_on_drop: false }`
[INFO] [stdout] 45606f3d3dcb4fbde0f4a4546fa24a86c18e68329d99f85626ed7b5273fcc308
