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[INFO] checking rmp-futures-0.2.1 against try#cac44d9528e3bbbdaa1537d187bd489ccc5de18c for pr-91141
[INFO] extracting crate rmp-futures 0.2.1 into /workspace/builds/worker-34/source
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[INFO] crate crates.io crate rmp-futures 0.2.1 already has a lockfile, it will not be regenerated
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[INFO] [stdout] warning: `must_use` attribute on `async` functions applies to the anonymous `Future` returned by the function, not the value within
[INFO] [stdout]    --> src/encode.rs:335:5
[INFO] [stdout]     |
[INFO] [stdout] 335 |       #[must_use = "dropping the writer may leave the message unfinished"]
[INFO] [stdout]     |       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 336 | /     pub async fn write_nil(mut self) -> IoResult<W> {
[INFO] [stdout] 337 | |         self.write_marker(Marker::Null).await.map(|()| self.writer)
[INFO] [stdout] 338 | |     }
[INFO] [stdout]     | |_____- this attribute does nothing, the `Future`s returned by async functions are already `must_use`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_attributes)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `must_use` attribute on `async` functions applies to the anonymous `Future` returned by the function, not the value within
[INFO] [stdout]    --> src/encode.rs:340:5
[INFO] [stdout]     |
[INFO] [stdout] 340 |       #[must_use = "dropping the writer may leave the message unfinished"]
[INFO] [stdout]     |       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 341 | /     pub async fn write_bool(mut self, val: bool) -> IoResult<W> {
[INFO] [stdout] 342 | |         if val {
[INFO] [stdout] 343 | |             self.write_marker(Marker::True)
[INFO] [stdout] 344 | |         } else {
[INFO] [stdout] ...   |
[INFO] [stdout] 348 | |         .map(|()| self.writer)
[INFO] [stdout] 349 | |     }
[INFO] [stdout]     | |_____- this attribute does nothing, the `Future`s returned by async functions are already `must_use`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `must_use` attribute on `async` functions applies to the anonymous `Future` returned by the function, not the value within
[INFO] [stdout]    --> src/encode.rs:392:5
[INFO] [stdout]     |
[INFO] [stdout] 392 |       #[must_use = "dropping the writer may leave the message unfinished"]
[INFO] [stdout]     |       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 393 | /     pub async fn write_int(self, val: impl Into<EfficientInt>) -> IoResult<W> {
[INFO] [stdout] 394 | |         self.write_efficient_int(val.into()).await
[INFO] [stdout] 395 | |     }
[INFO] [stdout]     | |_____- this attribute does nothing, the `Future`s returned by async functions are already `must_use`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `must_use` attribute on `async` functions applies to the anonymous `Future` returned by the function, not the value within
[INFO] [stdout]    --> src/encode.rs:397:5
[INFO] [stdout]     |
[INFO] [stdout] 397 |       #[must_use = "dropping the writer may leave the message unfinished"]
[INFO] [stdout]     |       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 398 | /     pub async fn write_f32(mut self, val: f32) -> IoResult<W> {
[INFO] [stdout] 399 | |         self.write_marker(Marker::F32).await?;
[INFO] [stdout] 400 | |         let mut buf = [0u8; 4];
[INFO] [stdout] 401 | |         BigEndian::write_f32(&mut buf, val);
[INFO] [stdout] 402 | |         self.write_4(buf).await.map(|()| self.writer)
[INFO] [stdout] 403 | |     }
[INFO] [stdout]     | |_____- this attribute does nothing, the `Future`s returned by async functions are already `must_use`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `must_use` attribute on `async` functions applies to the anonymous `Future` returned by the function, not the value within
[INFO] [stdout]    --> src/encode.rs:405:5
[INFO] [stdout]     |
[INFO] [stdout] 405 |       #[must_use = "dropping the writer may leave the message unfinished"]
[INFO] [stdout]     |       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 406 | /     pub async fn write_f64(mut self, val: f64) -> IoResult<W> {
[INFO] [stdout] 407 | |         self.write_marker(Marker::F64).await?;
[INFO] [stdout] 408 | |         let mut buf = [0u8; 8];
[INFO] [stdout] 409 | |         BigEndian::write_f64(&mut buf, val);
[INFO] [stdout] 410 | |         self.write_8(buf).await.map(|()| self.writer)
[INFO] [stdout] 411 | |     }
[INFO] [stdout]     | |_____- this attribute does nothing, the `Future`s returned by async functions are already `must_use`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `must_use` attribute on `async` functions applies to the anonymous `Future` returned by the function, not the value within
[INFO] [stdout]    --> src/encode.rs:413:5
[INFO] [stdout]     |
[INFO] [stdout] 413 |       #[must_use = "dropping the writer may leave the message unfinished"]
[INFO] [stdout]     |       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 414 | /     pub async fn write_array_len(mut self, len: u32) -> IoResult<ArrayFuture<W>> {
[INFO] [stdout] 415 | |         const U16MAX: u32 = std::u16::MAX as u32;
[INFO] [stdout] 416 | |
[INFO] [stdout] 417 | |         match len {
[INFO] [stdout] ...   |
[INFO] [stdout] 431 | |         })
[INFO] [stdout] 432 | |     }
[INFO] [stdout]     | |_____- this attribute does nothing, the `Future`s returned by async functions are already `must_use`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `must_use` attribute on `async` functions applies to the anonymous `Future` returned by the function, not the value within
[INFO] [stdout]    --> src/encode.rs:434:5
[INFO] [stdout]     |
[INFO] [stdout] 434 |       #[must_use = "dropping the writer may leave the message unfinished"]
[INFO] [stdout]     |       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 435 | /     pub async fn write_map_len(mut self, len: u32) -> IoResult<MapFuture<W>> {
[INFO] [stdout] 436 | |         const U16MAX: u32 = std::u16::MAX as u32;
[INFO] [stdout] 437 | |
[INFO] [stdout] 438 | |         match len {
[INFO] [stdout] ...   |
[INFO] [stdout] 452 | |         })
[INFO] [stdout] 453 | |     }
[INFO] [stdout]     | |_____- this attribute does nothing, the `Future`s returned by async functions are already `must_use`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `must_use` attribute on `async` functions applies to the anonymous `Future` returned by the function, not the value within
[INFO] [stdout]    --> src/encode.rs:457:5
[INFO] [stdout]     |
[INFO] [stdout] 457 |       #[must_use = "dropping the writer may leave the message unfinished"]
[INFO] [stdout]     |       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 458 | /     pub async fn write_bin_len(mut self, len: u32) -> IoResult<W> {
[INFO] [stdout] 459 | |         if let Ok(len) = u8::try_from(len) {
[INFO] [stdout] 460 | |             self.write_marker(Marker::Bin8).await?;
[INFO] [stdout] 461 | |             self.write_u8(len).await
[INFO] [stdout] ...   |
[INFO] [stdout] 469 | |         .map(|()| self.writer)
[INFO] [stdout] 470 | |     }
[INFO] [stdout]     | |_____- this attribute does nothing, the `Future`s returned by async functions are already `must_use`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `must_use` attribute on `async` functions applies to the anonymous `Future` returned by the function, not the value within
[INFO] [stdout]    --> src/encode.rs:473:5
[INFO] [stdout]     |
[INFO] [stdout] 473 |       #[must_use = "dropping the writer may leave the message unfinished"]
[INFO] [stdout]     |       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 474 | /     pub async fn write_bin(self, data: &[u8]) -> IoResult<W> {
[INFO] [stdout] 475 | |         let mut w = self.write_bin_len(data.len().try_into().unwrap()).await?;
[INFO] [stdout] 476 | |         w.write_all(data).await?;
[INFO] [stdout] 477 | |         Ok(w)
[INFO] [stdout] 478 | |     }
[INFO] [stdout]     | |_____- this attribute does nothing, the `Future`s returned by async functions are already `must_use`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `must_use` attribute on `async` functions applies to the anonymous `Future` returned by the function, not the value within
[INFO] [stdout]    --> src/encode.rs:482:5
[INFO] [stdout]     |
[INFO] [stdout] 482 |       #[must_use = "dropping the writer may leave the message unfinished"]
[INFO] [stdout]     |       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 483 | /     pub async fn write_str_len(mut self, len: u32) -> IoResult<W> {
[INFO] [stdout] 484 | |         if let Ok(len) = u8::try_from(len) {
[INFO] [stdout] 485 | |             if len < 32 {
[INFO] [stdout] 486 | |                 self.write_marker(Marker::FixStr(len)).await
[INFO] [stdout] ...   |
[INFO] [stdout] 498 | |         .map(|()| self.writer)
[INFO] [stdout] 499 | |     }
[INFO] [stdout]     | |_____- this attribute does nothing, the `Future`s returned by async functions are already `must_use`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `must_use` attribute on `async` functions applies to the anonymous `Future` returned by the function, not the value within
[INFO] [stdout]    --> src/encode.rs:502:5
[INFO] [stdout]     |
[INFO] [stdout] 502 |       #[must_use = "dropping the writer may leave the message unfinished"]
[INFO] [stdout]     |       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 503 | /     pub async fn write_str_bytes(self, string: &[u8]) -> IoResult<W> {
[INFO] [stdout] 504 | |         let mut w = self.write_str_len(string.len().try_into().unwrap()).await?;
[INFO] [stdout] 505 | |         w.write_all(string).await?;
[INFO] [stdout] 506 | |         Ok(w)
[INFO] [stdout] 507 | |     }
[INFO] [stdout]     | |_____- this attribute does nothing, the `Future`s returned by async functions are already `must_use`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `must_use` attribute on `async` functions applies to the anonymous `Future` returned by the function, not the value within
[INFO] [stdout]    --> src/encode.rs:510:5
[INFO] [stdout]     |
[INFO] [stdout] 510 |       #[must_use = "dropping the writer may leave the message unfinished"]
[INFO] [stdout]     |       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 511 | /     pub async fn write_str(self, string: &str) -> IoResult<W> {
[INFO] [stdout] 512 | |         self.write_str_bytes(string.as_bytes()).await
[INFO] [stdout] 513 | |     }
[INFO] [stdout]     | |_____- this attribute does nothing, the `Future`s returned by async functions are already `must_use`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `must_use` attribute on `async` functions applies to the anonymous `Future` returned by the function, not the value within
[INFO] [stdout]    --> src/encode.rs:522:5
[INFO] [stdout]     |
[INFO] [stdout] 522 |       #[must_use = "dropping the writer may leave the message unfinished"]
[INFO] [stdout]     |       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 523 | /     pub async fn write_ext_meta(mut self, len: u32, ty: i8) -> IoResult<W> {
[INFO] [stdout] 524 | |         assert!(ty >= 0);
[INFO] [stdout] 525 | |
[INFO] [stdout] 526 | |         if let Ok(len) = u8::try_from(len) {
[INFO] [stdout] ...   |
[INFO] [stdout] 555 | |         self.write_u8(ty as u8).await.map(|()| self.writer)
[INFO] [stdout] 556 | |     }
[INFO] [stdout]     | |_____- this attribute does nothing, the `Future`s returned by async functions are already `must_use`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `must_use` attribute on `async` functions applies to the anonymous `Future` returned by the function, not the value within
[INFO] [stdout]    --> src/encode.rs:558:5
[INFO] [stdout]     |
[INFO] [stdout] 558 |       #[must_use = "dropping the writer may leave the message unfinished"]
[INFO] [stdout]     |       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 559 | /     pub async fn write_ext(self, data: &[u8], ty: i8) -> IoResult<W> {
[INFO] [stdout] 560 | |         let mut w = self
[INFO] [stdout] 561 | |             .write_ext_meta(data.len().try_into().unwrap(), ty)
[INFO] [stdout] 562 | |             .await?;
[INFO] [stdout] 563 | |         w.write_all(data).await?;
[INFO] [stdout] 564 | |         Ok(w)
[INFO] [stdout] 565 | |     }
[INFO] [stdout]     | |_____- this attribute does nothing, the `Future`s returned by async functions are already `must_use`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `must_use` attribute on `async` functions applies to the anonymous `Future` returned by the function, not the value within
[INFO] [stdout]    --> src/encode.rs:572:5
[INFO] [stdout]     |
[INFO] [stdout] 572 |       #[must_use = "dropping the writer may leave the message unfinished"]
[INFO] [stdout]     |       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 573 | /     pub async fn write_value(self, value: &Value) -> IoResult<W>
[INFO] [stdout] 574 | |     where
[INFO] [stdout] 575 | |         W: Send,
[INFO] [stdout] 576 | |     {
[INFO] [stdout] ...   |
[INFO] [stdout] 588 | |         }
[INFO] [stdout] 589 | |     }
[INFO] [stdout]     | |_____- this attribute does nothing, the `Future`s returned by async functions are already `must_use`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `must_use` attribute on `async` functions applies to the anonymous `Future` returned by the function, not the value within
[INFO] [stdout]    --> src/encode.rs:596:5
[INFO] [stdout]     |
[INFO] [stdout] 596 |       #[must_use = "dropping the writer may leave the message unfinished"]
[INFO] [stdout]     |       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 597 | /     pub async fn write_value_ref(self, value: &ValueRef<'_>) -> IoResult<W>
[INFO] [stdout] 598 | |     where
[INFO] [stdout] 599 | |         W: Send,
[INFO] [stdout] 600 | |     {
[INFO] [stdout] ...   |
[INFO] [stdout] 626 | |         }
[INFO] [stdout] 627 | |     }
[INFO] [stdout]     | |_____- this attribute does nothing, the `Future`s returned by async functions are already `must_use`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `must_use` attribute on `async` functions applies to the anonymous `Future` returned by the function, not the value within
[INFO] [stdout]   --> src/rpc/encode.rs:37:5
[INFO] [stdout]    |
[INFO] [stdout] 37 |       #[must_use = "dropping the writer may leave the message unfinished"]
[INFO] [stdout]    |       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 38 | /     pub async fn write_request(
[INFO] [stdout] 39 | |         self,
[INFO] [stdout] 40 | |         msgid: MsgId,
[INFO] [stdout] 41 | |         method: impl AsRef<str>,
[INFO] [stdout] ...  |
[INFO] [stdout] 61 | |         args.write_array_len(num_args).await
[INFO] [stdout] 62 | |     }
[INFO] [stdout]    | |_____- this attribute does nothing, the `Future`s returned by async functions are already `must_use`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `must_use` attribute on `async` functions applies to the anonymous `Future` returned by the function, not the value within
[INFO] [stdout]    --> src/rpc/encode.rs:108:5
[INFO] [stdout]     |
[INFO] [stdout] 108 |       #[must_use = "dropping the writer may leave the message unfinished"]
[INFO] [stdout]     |       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 109 | /     pub async fn write_notification(
[INFO] [stdout] 110 | |         self,
[INFO] [stdout] 111 | |         method: impl AsRef<str>,
[INFO] [stdout] 112 | |         num_args: u32,
[INFO] [stdout] ...   |
[INFO] [stdout] 124 | |         args.write_array_len(num_args).await
[INFO] [stdout] 125 | |     }
[INFO] [stdout]     | |_____- this attribute does nothing, the `Future`s returned by async functions are already `must_use`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 18 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `must_use` attribute on `async` functions applies to the anonymous `Future` returned by the function, not the value within
[INFO] [stdout]    --> src/encode.rs:335:5
[INFO] [stdout]     |
[INFO] [stdout] 335 |       #[must_use = "dropping the writer may leave the message unfinished"]
[INFO] [stdout]     |       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 336 | /     pub async fn write_nil(mut self) -> IoResult<W> {
[INFO] [stdout] 337 | |         self.write_marker(Marker::Null).await.map(|()| self.writer)
[INFO] [stdout] 338 | |     }
[INFO] [stdout]     | |_____- this attribute does nothing, the `Future`s returned by async functions are already `must_use`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_attributes)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `must_use` attribute on `async` functions applies to the anonymous `Future` returned by the function, not the value within
[INFO] [stdout]    --> src/encode.rs:340:5
[INFO] [stdout]     |
[INFO] [stdout] 340 |       #[must_use = "dropping the writer may leave the message unfinished"]
[INFO] [stdout]     |       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 341 | /     pub async fn write_bool(mut self, val: bool) -> IoResult<W> {
[INFO] [stdout] 342 | |         if val {
[INFO] [stdout] 343 | |             self.write_marker(Marker::True)
[INFO] [stdout] 344 | |         } else {
[INFO] [stdout] ...   |
[INFO] [stdout] 348 | |         .map(|()| self.writer)
[INFO] [stdout] 349 | |     }
[INFO] [stdout]     | |_____- this attribute does nothing, the `Future`s returned by async functions are already `must_use`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `must_use` attribute on `async` functions applies to the anonymous `Future` returned by the function, not the value within
[INFO] [stdout]    --> src/encode.rs:392:5
[INFO] [stdout]     |
[INFO] [stdout] 392 |       #[must_use = "dropping the writer may leave the message unfinished"]
[INFO] [stdout]     |       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 393 | /     pub async fn write_int(self, val: impl Into<EfficientInt>) -> IoResult<W> {
[INFO] [stdout] 394 | |         self.write_efficient_int(val.into()).await
[INFO] [stdout] 395 | |     }
[INFO] [stdout]     | |_____- this attribute does nothing, the `Future`s returned by async functions are already `must_use`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `must_use` attribute on `async` functions applies to the anonymous `Future` returned by the function, not the value within
[INFO] [stdout]    --> src/encode.rs:397:5
[INFO] [stdout]     |
[INFO] [stdout] 397 |       #[must_use = "dropping the writer may leave the message unfinished"]
[INFO] [stdout]     |       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 398 | /     pub async fn write_f32(mut self, val: f32) -> IoResult<W> {
[INFO] [stdout] 399 | |         self.write_marker(Marker::F32).await?;
[INFO] [stdout] 400 | |         let mut buf = [0u8; 4];
[INFO] [stdout] 401 | |         BigEndian::write_f32(&mut buf, val);
[INFO] [stdout] 402 | |         self.write_4(buf).await.map(|()| self.writer)
[INFO] [stdout] 403 | |     }
[INFO] [stdout]     | |_____- this attribute does nothing, the `Future`s returned by async functions are already `must_use`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `must_use` attribute on `async` functions applies to the anonymous `Future` returned by the function, not the value within
[INFO] [stdout]    --> src/encode.rs:405:5
[INFO] [stdout]     |
[INFO] [stdout] 405 |       #[must_use = "dropping the writer may leave the message unfinished"]
[INFO] [stdout]     |       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 406 | /     pub async fn write_f64(mut self, val: f64) -> IoResult<W> {
[INFO] [stdout] 407 | |         self.write_marker(Marker::F64).await?;
[INFO] [stdout] 408 | |         let mut buf = [0u8; 8];
[INFO] [stdout] 409 | |         BigEndian::write_f64(&mut buf, val);
[INFO] [stdout] 410 | |         self.write_8(buf).await.map(|()| self.writer)
[INFO] [stdout] 411 | |     }
[INFO] [stdout]     | |_____- this attribute does nothing, the `Future`s returned by async functions are already `must_use`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `must_use` attribute on `async` functions applies to the anonymous `Future` returned by the function, not the value within
[INFO] [stdout]    --> src/encode.rs:413:5
[INFO] [stdout]     |
[INFO] [stdout] 413 |       #[must_use = "dropping the writer may leave the message unfinished"]
[INFO] [stdout]     |       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 414 | /     pub async fn write_array_len(mut self, len: u32) -> IoResult<ArrayFuture<W>> {
[INFO] [stdout] 415 | |         const U16MAX: u32 = std::u16::MAX as u32;
[INFO] [stdout] 416 | |
[INFO] [stdout] 417 | |         match len {
[INFO] [stdout] ...   |
[INFO] [stdout] 431 | |         })
[INFO] [stdout] 432 | |     }
[INFO] [stdout]     | |_____- this attribute does nothing, the `Future`s returned by async functions are already `must_use`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `must_use` attribute on `async` functions applies to the anonymous `Future` returned by the function, not the value within
[INFO] [stdout]    --> src/encode.rs:434:5
[INFO] [stdout]     |
[INFO] [stdout] 434 |       #[must_use = "dropping the writer may leave the message unfinished"]
[INFO] [stdout]     |       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 435 | /     pub async fn write_map_len(mut self, len: u32) -> IoResult<MapFuture<W>> {
[INFO] [stdout] 436 | |         const U16MAX: u32 = std::u16::MAX as u32;
[INFO] [stdout] 437 | |
[INFO] [stdout] 438 | |         match len {
[INFO] [stdout] ...   |
[INFO] [stdout] 452 | |         })
[INFO] [stdout] 453 | |     }
[INFO] [stdout]     | |_____- this attribute does nothing, the `Future`s returned by async functions are already `must_use`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `must_use` attribute on `async` functions applies to the anonymous `Future` returned by the function, not the value within
[INFO] [stdout]    --> src/encode.rs:457:5
[INFO] [stdout]     |
[INFO] [stdout] 457 |       #[must_use = "dropping the writer may leave the message unfinished"]
[INFO] [stdout]     |       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 458 | /     pub async fn write_bin_len(mut self, len: u32) -> IoResult<W> {
[INFO] [stdout] 459 | |         if let Ok(len) = u8::try_from(len) {
[INFO] [stdout] 460 | |             self.write_marker(Marker::Bin8).await?;
[INFO] [stdout] 461 | |             self.write_u8(len).await
[INFO] [stdout] ...   |
[INFO] [stdout] 469 | |         .map(|()| self.writer)
[INFO] [stdout] 470 | |     }
[INFO] [stdout]     | |_____- this attribute does nothing, the `Future`s returned by async functions are already `must_use`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `must_use` attribute on `async` functions applies to the anonymous `Future` returned by the function, not the value within
[INFO] [stdout]    --> src/encode.rs:473:5
[INFO] [stdout]     |
[INFO] [stdout] 473 |       #[must_use = "dropping the writer may leave the message unfinished"]
[INFO] [stdout]     |       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 474 | /     pub async fn write_bin(self, data: &[u8]) -> IoResult<W> {
[INFO] [stdout] 475 | |         let mut w = self.write_bin_len(data.len().try_into().unwrap()).await?;
[INFO] [stdout] 476 | |         w.write_all(data).await?;
[INFO] [stdout] 477 | |         Ok(w)
[INFO] [stdout] 478 | |     }
[INFO] [stdout]     | |_____- this attribute does nothing, the `Future`s returned by async functions are already `must_use`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `must_use` attribute on `async` functions applies to the anonymous `Future` returned by the function, not the value within
[INFO] [stdout]    --> src/encode.rs:482:5
[INFO] [stdout]     |
[INFO] [stdout] 482 |       #[must_use = "dropping the writer may leave the message unfinished"]
[INFO] [stdout]     |       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 483 | /     pub async fn write_str_len(mut self, len: u32) -> IoResult<W> {
[INFO] [stdout] 484 | |         if let Ok(len) = u8::try_from(len) {
[INFO] [stdout] 485 | |             if len < 32 {
[INFO] [stdout] 486 | |                 self.write_marker(Marker::FixStr(len)).await
[INFO] [stdout] ...   |
[INFO] [stdout] 498 | |         .map(|()| self.writer)
[INFO] [stdout] 499 | |     }
[INFO] [stdout]     | |_____- this attribute does nothing, the `Future`s returned by async functions are already `must_use`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `must_use` attribute on `async` functions applies to the anonymous `Future` returned by the function, not the value within
[INFO] [stdout]    --> src/encode.rs:502:5
[INFO] [stdout]     |
[INFO] [stdout] 502 |       #[must_use = "dropping the writer may leave the message unfinished"]
[INFO] [stdout]     |       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 503 | /     pub async fn write_str_bytes(self, string: &[u8]) -> IoResult<W> {
[INFO] [stdout] 504 | |         let mut w = self.write_str_len(string.len().try_into().unwrap()).await?;
[INFO] [stdout] 505 | |         w.write_all(string).await?;
[INFO] [stdout] 506 | |         Ok(w)
[INFO] [stdout] 507 | |     }
[INFO] [stdout]     | |_____- this attribute does nothing, the `Future`s returned by async functions are already `must_use`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `must_use` attribute on `async` functions applies to the anonymous `Future` returned by the function, not the value within
[INFO] [stdout]    --> src/encode.rs:510:5
[INFO] [stdout]     |
[INFO] [stdout] 510 |       #[must_use = "dropping the writer may leave the message unfinished"]
[INFO] [stdout]     |       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 511 | /     pub async fn write_str(self, string: &str) -> IoResult<W> {
[INFO] [stdout] 512 | |         self.write_str_bytes(string.as_bytes()).await
[INFO] [stdout] 513 | |     }
[INFO] [stdout]     | |_____- this attribute does nothing, the `Future`s returned by async functions are already `must_use`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `must_use` attribute on `async` functions applies to the anonymous `Future` returned by the function, not the value within
[INFO] [stdout]    --> src/encode.rs:522:5
[INFO] [stdout]     |
[INFO] [stdout] 522 |       #[must_use = "dropping the writer may leave the message unfinished"]
[INFO] [stdout]     |       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 523 | /     pub async fn write_ext_meta(mut self, len: u32, ty: i8) -> IoResult<W> {
[INFO] [stdout] 524 | |         assert!(ty >= 0);
[INFO] [stdout] 525 | |
[INFO] [stdout] 526 | |         if let Ok(len) = u8::try_from(len) {
[INFO] [stdout] ...   |
[INFO] [stdout] 555 | |         self.write_u8(ty as u8).await.map(|()| self.writer)
[INFO] [stdout] 556 | |     }
[INFO] [stdout]     | |_____- this attribute does nothing, the `Future`s returned by async functions are already `must_use`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `must_use` attribute on `async` functions applies to the anonymous `Future` returned by the function, not the value within
[INFO] [stdout]    --> src/encode.rs:558:5
[INFO] [stdout]     |
[INFO] [stdout] 558 |       #[must_use = "dropping the writer may leave the message unfinished"]
[INFO] [stdout]     |       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 559 | /     pub async fn write_ext(self, data: &[u8], ty: i8) -> IoResult<W> {
[INFO] [stdout] 560 | |         let mut w = self
[INFO] [stdout] 561 | |             .write_ext_meta(data.len().try_into().unwrap(), ty)
[INFO] [stdout] 562 | |             .await?;
[INFO] [stdout] 563 | |         w.write_all(data).await?;
[INFO] [stdout] 564 | |         Ok(w)
[INFO] [stdout] 565 | |     }
[INFO] [stdout]     | |_____- this attribute does nothing, the `Future`s returned by async functions are already `must_use`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `must_use` attribute on `async` functions applies to the anonymous `Future` returned by the function, not the value within
[INFO] [stdout]    --> src/encode.rs:572:5
[INFO] [stdout]     |
[INFO] [stdout] 572 |       #[must_use = "dropping the writer may leave the message unfinished"]
[INFO] [stdout]     |       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 573 | /     pub async fn write_value(self, value: &Value) -> IoResult<W>
[INFO] [stdout] 574 | |     where
[INFO] [stdout] 575 | |         W: Send,
[INFO] [stdout] 576 | |     {
[INFO] [stdout] ...   |
[INFO] [stdout] 588 | |         }
[INFO] [stdout] 589 | |     }
[INFO] [stdout]     | |_____- this attribute does nothing, the `Future`s returned by async functions are already `must_use`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `must_use` attribute on `async` functions applies to the anonymous `Future` returned by the function, not the value within
[INFO] [stdout]    --> src/encode.rs:596:5
[INFO] [stdout]     |
[INFO] [stdout] 596 |       #[must_use = "dropping the writer may leave the message unfinished"]
[INFO] [stdout]     |       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 597 | /     pub async fn write_value_ref(self, value: &ValueRef<'_>) -> IoResult<W>
[INFO] [stdout] 598 | |     where
[INFO] [stdout] 599 | |         W: Send,
[INFO] [stdout] 600 | |     {
[INFO] [stdout] ...   |
[INFO] [stdout] 626 | |         }
[INFO] [stdout] 627 | |     }
[INFO] [stdout]     | |_____- this attribute does nothing, the `Future`s returned by async functions are already `must_use`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `must_use` attribute on `async` functions applies to the anonymous `Future` returned by the function, not the value within
[INFO] [stdout]   --> src/rpc/encode.rs:37:5
[INFO] [stdout]    |
[INFO] [stdout] 37 |       #[must_use = "dropping the writer may leave the message unfinished"]
[INFO] [stdout]    |       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 38 | /     pub async fn write_request(
[INFO] [stdout] 39 | |         self,
[INFO] [stdout] 40 | |         msgid: MsgId,
[INFO] [stdout] 41 | |         method: impl AsRef<str>,
[INFO] [stdout] ...  |
[INFO] [stdout] 61 | |         args.write_array_len(num_args).await
[INFO] [stdout] 62 | |     }
[INFO] [stdout]    | |_____- this attribute does nothing, the `Future`s returned by async functions are already `must_use`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `must_use` attribute on `async` functions applies to the anonymous `Future` returned by the function, not the value within
[INFO] [stdout]    --> src/rpc/encode.rs:108:5
[INFO] [stdout]     |
[INFO] [stdout] 108 |       #[must_use = "dropping the writer may leave the message unfinished"]
[INFO] [stdout]     |       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 109 | /     pub async fn write_notification(
[INFO] [stdout] 110 | |         self,
[INFO] [stdout] 111 | |         method: impl AsRef<str>,
[INFO] [stdout] 112 | |         num_args: u32,
[INFO] [stdout] ...   |
[INFO] [stdout] 124 | |         args.write_array_len(num_args).await
[INFO] [stdout] 125 | |     }
[INFO] [stdout]     | |_____- this attribute does nothing, the `Future`s returned by async functions are already `must_use`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 18 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 18.71s
[INFO] running `Command { std: "docker" "inspect" "3b3e89effb7e210bafcbb50eee68db7c0d251b752cc902bd26dbb082b14bdf51", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3b3e89effb7e210bafcbb50eee68db7c0d251b752cc902bd26dbb082b14bdf51", kill_on_drop: false }`
[INFO] [stdout] 3b3e89effb7e210bafcbb50eee68db7c0d251b752cc902bd26dbb082b14bdf51