[INFO] fetching crate embedded-io-convert 0.2.0...
[INFO] testing embedded-io-convert-0.2.0 against try#dec9417b8611e34e787a3e4c37686b5131f9e5c5 for pr-154210-1
[INFO] extracting crate embedded-io-convert 0.2.0 into /workspace/builds/worker-6-tc2/source
[INFO] removed /workspace/builds/worker-6-tc2/source/rust-toolchain.toml
[INFO] started tweaking crates.io crate embedded-io-convert 0.2.0
[INFO] finished tweaking crates.io crate embedded-io-convert 0.2.0
[INFO] tweaked toml for crates.io crate embedded-io-convert 0.2.0 written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate embedded-io-convert 0.2.0 on toolchain dec9417b8611e34e787a3e4c37686b5131f9e5c5
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate embedded-io-convert 0.2.0 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" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 36d842b30da81c2da48e7617a392933eed4fb6f360a597a05ac71744ce8de972
[INFO] running `Command { std: "docker" "start" "-a" "36d842b30da81c2da48e7617a392933eed4fb6f360a597a05ac71744ce8de972", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "36d842b30da81c2da48e7617a392933eed4fb6f360a597a05ac71744ce8de972", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "36d842b30da81c2da48e7617a392933eed4fb6f360a597a05ac71744ce8de972", kill_on_drop: false }`
[INFO] [stdout] 36d842b30da81c2da48e7617a392933eed4fb6f360a597a05ac71744ce8de972
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c4580f451e45961f26405b206c0c20069ccbdeffe2527ae5762e7c73be3d6fa9
[INFO] running `Command { std: "docker" "start" "-a" "c4580f451e45961f26405b206c0c20069ccbdeffe2527ae5762e7c73be3d6fa9", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.3.0
[INFO] [stderr]    Compiling pin-project-lite v0.2.14
[INFO] [stderr]    Compiling futures-io v0.3.30
[INFO] [stderr]    Compiling futures-core v0.3.30
[INFO] [stderr]    Compiling futures-sink v0.3.30
[INFO] [stderr]    Compiling futures-task v0.3.30
[INFO] [stderr]    Compiling embedded-io v0.7.1
[INFO] [stderr]    Compiling pinned-aliasable v0.1.3
[INFO] [stderr]    Compiling either v1.13.0
[INFO] [stderr]    Compiling quote v1.0.37
[INFO] [stderr]    Compiling pin-list v0.1.1
[INFO] [stderr]    Compiling embedded-io-async v0.7.0
[INFO] [stderr]    Compiling merge-io v0.3.0
[INFO] [stderr]    Compiling futures-channel v0.3.30
[INFO] [stderr]    Compiling syn v2.0.77
[INFO] [stderr]    Compiling slab v0.4.9
[INFO] [stderr]    Compiling lock_api v0.4.12
[INFO] [stderr]    Compiling spin v0.9.8
[INFO] [stderr]    Compiling futures-macro v0.3.30
[INFO] [stderr]    Compiling pin-project-internal v1.1.5
[INFO] [stderr]    Compiling futures-util v0.3.30
[INFO] [stderr]    Compiling pin-project v1.1.5
[INFO] [stderr]    Compiling no-std-async v1.1.2
[INFO] [stderr]    Compiling futures-executor v0.3.30
[INFO] [stderr]    Compiling futures v0.3.30
[INFO] [stderr]    Compiling embedded-io-adapters v0.7.0
[INFO] [stderr]    Compiling embedded-io-convert v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused `#[macro_use]` import
[INFO] [stdout]  --> src/lib.rs:4:1
[INFO] [stdout]   |
[INFO] [stdout] 4 | #[macro_use]
[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: `Future`
[INFO] [stdout]   --> src/lib.rs:12:49
[INFO] [stdout]    |
[INFO] [stdout] 12 | use futures::{AsyncRead, AsyncSeek, AsyncWrite, Future};
[INFO] [stdout]    |                                                 ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `core::error::Error`
[INFO] [stdout]  --> src/read.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use core::error::Error;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `core::pin::pin`
[INFO] [stdout]  --> src/read.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use core::pin::pin;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `either::Either`
[INFO] [stdout]  --> src/read.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use either::Either;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `core::error::Error`
[INFO] [stdout]  --> src/seek.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use core::error::Error;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Write`
[INFO] [stdout]  --> src/seek.rs:6:31
[INFO] [stdout]   |
[INFO] [stdout] 6 | use embedded_io_async::{Seek, Write};
[INFO] [stdout]   |                               ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `AsyncRead` and `AsyncWrite`
[INFO] [stdout]  --> src/seek.rs:7:15
[INFO] [stdout]   |
[INFO] [stdout] 7 | use futures::{AsyncRead, AsyncSeek, AsyncWrite, Future};
[INFO] [stdout]   |               ^^^^^^^^^             ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `core::error::Error`
[INFO] [stdout]  --> src/write.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use core::error::Error;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `AsyncRead`
[INFO] [stdout]  --> src/write.rs:9:15
[INFO] [stdout]   |
[INFO] [stdout] 9 | use futures::{AsyncRead, AsyncWrite, Future};
[INFO] [stdout]   |               ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/read.rs:39:17
[INFO] [stdout]    |
[INFO] [stdout] 39 |             let mut fut = match state {
[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/seek.rs:45:17
[INFO] [stdout]    |
[INFO] [stdout] 45 |             let mut fut = match state {
[INFO] [stdout]    |                 ----^^^
[INFO] [stdout]    |                 |
[INFO] [stdout]    |                 help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/write.rs:48:17
[INFO] [stdout]    |
[INFO] [stdout] 48 |             let mut fut = match state {
[INFO] [stdout]    |                 ----^^^
[INFO] [stdout]    |                 |
[INFO] [stdout]    |                 help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `cx`
[INFO] [stdout]    --> src/write.rs:151:45
[INFO] [stdout]     |
[INFO] [stdout] 151 |         fn poll_close(self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<std::io::Result<()>> {
[INFO] [stdout]     |                                             ^^ help: if this is intentional, prefix it with an underscore: `_cx`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `BoxFut` is never used
[INFO] [stdout]   --> src/read.rs:28:10
[INFO] [stdout]    |
[INFO] [stdout] 28 |     type BoxFut<T> = Pin<Box<dyn Future<Output = T> + Send>>;
[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 `poll_seek` is never used
[INFO] [stdout]    --> src/seek.rs:104:8
[INFO] [stdout]     |
[INFO] [stdout] 103 | impl<R: embedded_io_async::Seek> SimpleAsyncSeeker<R> {
[INFO] [stdout]     | ----------------------------------------------------- method in this implementation
[INFO] [stdout] 104 |     fn poll_seek(
[INFO] [stdout]     |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `BoxFut` is never used
[INFO] [stdout]   --> src/seek.rs:27:10
[INFO] [stdout]    |
[INFO] [stdout] 27 |     type BoxFut<T> = Pin<Box<dyn Future<Output = T> + Send>>;
[INFO] [stdout]    |          ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `BoxFut` is never used
[INFO] [stdout]   --> src/write.rs:26:6
[INFO] [stdout]    |
[INFO] [stdout] 26 | type BoxFut<T> = Pin<Box<dyn Future<Output = T> + Send>>;
[INFO] [stdout]    |      ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 10.79s
[INFO] running `Command { std: "docker" "inspect" "c4580f451e45961f26405b206c0c20069ccbdeffe2527ae5762e7c73be3d6fa9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c4580f451e45961f26405b206c0c20069ccbdeffe2527ae5762e7c73be3d6fa9", kill_on_drop: false }`
[INFO] [stdout] c4580f451e45961f26405b206c0c20069ccbdeffe2527ae5762e7c73be3d6fa9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 04b9184e6541716a3f42ba2405497bfd1cf4bba1214e15b8bcf61218c06d0f05
[INFO] running `Command { std: "docker" "start" "-a" "04b9184e6541716a3f42ba2405497bfd1cf4bba1214e15b8bcf61218c06d0f05", kill_on_drop: false }`
[INFO] [stderr]    Compiling embedded-io-convert v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused `#[macro_use]` import
[INFO] [stdout]  --> src/lib.rs:4:1
[INFO] [stdout]   |
[INFO] [stdout] 4 | #[macro_use]
[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: `Future`
[INFO] [stdout]   --> src/lib.rs:12:49
[INFO] [stdout]    |
[INFO] [stdout] 12 | use futures::{AsyncRead, AsyncSeek, AsyncWrite, Future};
[INFO] [stdout]    |                                                 ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `core::error::Error`
[INFO] [stdout]  --> src/read.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use core::error::Error;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `core::pin::pin`
[INFO] [stdout]  --> src/read.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use core::pin::pin;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `either::Either`
[INFO] [stdout]  --> src/read.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use either::Either;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `core::error::Error`
[INFO] [stdout]  --> src/seek.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use core::error::Error;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Write`
[INFO] [stdout]  --> src/seek.rs:6:31
[INFO] [stdout]   |
[INFO] [stdout] 6 | use embedded_io_async::{Seek, Write};
[INFO] [stdout]   |                               ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `AsyncRead` and `AsyncWrite`
[INFO] [stdout]  --> src/seek.rs:7:15
[INFO] [stdout]   |
[INFO] [stdout] 7 | use futures::{AsyncRead, AsyncSeek, AsyncWrite, Future};
[INFO] [stdout]   |               ^^^^^^^^^             ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `core::error::Error`
[INFO] [stdout]  --> src/write.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use core::error::Error;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `AsyncRead`
[INFO] [stdout]  --> src/write.rs:9:15
[INFO] [stdout]   |
[INFO] [stdout] 9 | use futures::{AsyncRead, AsyncWrite, Future};
[INFO] [stdout]   |               ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/read.rs:39:17
[INFO] [stdout]    |
[INFO] [stdout] 39 |             let mut fut = match state {
[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/seek.rs:45:17
[INFO] [stdout]    |
[INFO] [stdout] 45 |             let mut fut = match state {
[INFO] [stdout]    |                 ----^^^
[INFO] [stdout]    |                 |
[INFO] [stdout]    |                 help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/write.rs:48:17
[INFO] [stdout]    |
[INFO] [stdout] 48 |             let mut fut = match state {
[INFO] [stdout]    |                 ----^^^
[INFO] [stdout]    |                 |
[INFO] [stdout]    |                 help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `cx`
[INFO] [stdout]    --> src/write.rs:151:45
[INFO] [stdout]     |
[INFO] [stdout] 151 |         fn poll_close(self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<std::io::Result<()>> {
[INFO] [stdout]     |                                             ^^ help: if this is intentional, prefix it with an underscore: `_cx`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `BoxFut` is never used
[INFO] [stdout]   --> src/read.rs:28:10
[INFO] [stdout]    |
[INFO] [stdout] 28 |     type BoxFut<T> = Pin<Box<dyn Future<Output = T> + Send>>;
[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 `poll_seek` is never used
[INFO] [stdout]    --> src/seek.rs:104:8
[INFO] [stdout]     |
[INFO] [stdout] 103 | impl<R: embedded_io_async::Seek> SimpleAsyncSeeker<R> {
[INFO] [stdout]     | ----------------------------------------------------- method in this implementation
[INFO] [stdout] 104 |     fn poll_seek(
[INFO] [stdout]     |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `BoxFut` is never used
[INFO] [stdout]   --> src/seek.rs:27:10
[INFO] [stdout]    |
[INFO] [stdout] 27 |     type BoxFut<T> = Pin<Box<dyn Future<Output = T> + Send>>;
[INFO] [stdout]    |          ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `BoxFut` is never used
[INFO] [stdout]   --> src/write.rs:26:6
[INFO] [stdout]    |
[INFO] [stdout] 26 | type BoxFut<T> = Pin<Box<dyn Future<Output = T> + Send>>;
[INFO] [stdout]    |      ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `#[macro_use]` import
[INFO] [stdout]  --> src/lib.rs:4:1
[INFO] [stdout]   |
[INFO] [stdout] 4 | #[macro_use]
[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: `Future`
[INFO] [stdout]   --> src/lib.rs:12:49
[INFO] [stdout]    |
[INFO] [stdout] 12 | use futures::{AsyncRead, AsyncSeek, AsyncWrite, Future};
[INFO] [stdout]    |                                                 ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `core::error::Error`
[INFO] [stdout]  --> src/read.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use core::error::Error;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `core::pin::pin`
[INFO] [stdout]  --> src/read.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use core::pin::pin;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `either::Either`
[INFO] [stdout]  --> src/read.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use either::Either;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `core::error::Error`
[INFO] [stdout]  --> src/seek.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use core::error::Error;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Write`
[INFO] [stdout]  --> src/seek.rs:6:31
[INFO] [stdout]   |
[INFO] [stdout] 6 | use embedded_io_async::{Seek, Write};
[INFO] [stdout]   |                               ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `AsyncRead` and `AsyncWrite`
[INFO] [stdout]  --> src/seek.rs:7:15
[INFO] [stdout]   |
[INFO] [stdout] 7 | use futures::{AsyncRead, AsyncSeek, AsyncWrite, Future};
[INFO] [stdout]   |               ^^^^^^^^^             ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `core::error::Error`
[INFO] [stdout]  --> src/write.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use core::error::Error;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `AsyncRead`
[INFO] [stdout]  --> src/write.rs:9:15
[INFO] [stdout]   |
[INFO] [stdout] 9 | use futures::{AsyncRead, AsyncWrite, Future};
[INFO] [stdout]   |               ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `super::*`
[INFO] [stdout]    --> src/lib.rs:155:9
[INFO] [stdout]     |
[INFO] [stdout] 155 |     use super::*;
[INFO] [stdout]     |         ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/read.rs:39:17
[INFO] [stdout]    |
[INFO] [stdout] 39 |             let mut fut = match state {
[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/seek.rs:45:17
[INFO] [stdout]    |
[INFO] [stdout] 45 |             let mut fut = match state {
[INFO] [stdout]    |                 ----^^^
[INFO] [stdout]    |                 |
[INFO] [stdout]    |                 help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/write.rs:48:17
[INFO] [stdout]    |
[INFO] [stdout] 48 |             let mut fut = match state {
[INFO] [stdout]    |                 ----^^^
[INFO] [stdout]    |                 |
[INFO] [stdout]    |                 help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `cx`
[INFO] [stdout]    --> src/write.rs:151:45
[INFO] [stdout]     |
[INFO] [stdout] 151 |         fn poll_close(self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<std::io::Result<()>> {
[INFO] [stdout]     |                                             ^^ help: if this is intentional, prefix it with an underscore: `_cx`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `BoxFut` is never used
[INFO] [stdout]   --> src/read.rs:28:10
[INFO] [stdout]    |
[INFO] [stdout] 28 |     type BoxFut<T> = Pin<Box<dyn Future<Output = T> + Send>>;
[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 `poll_seek` is never used
[INFO] [stdout]    --> src/seek.rs:104:8
[INFO] [stdout]     |
[INFO] [stdout] 103 | impl<R: embedded_io_async::Seek> SimpleAsyncSeeker<R> {
[INFO] [stdout]     | ----------------------------------------------------- method in this implementation
[INFO] [stdout] 104 |     fn poll_seek(
[INFO] [stdout]     |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `BoxFut` is never used
[INFO] [stdout]   --> src/seek.rs:27:10
[INFO] [stdout]    |
[INFO] [stdout] 27 |     type BoxFut<T> = Pin<Box<dyn Future<Output = T> + Send>>;
[INFO] [stdout]    |          ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `BoxFut` is never used
[INFO] [stdout]   --> src/write.rs:26:6
[INFO] [stdout]    |
[INFO] [stdout] 26 | type BoxFut<T> = Pin<Box<dyn Future<Output = T> + Send>>;
[INFO] [stdout]    |      ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.52s
[INFO] running `Command { std: "docker" "inspect" "04b9184e6541716a3f42ba2405497bfd1cf4bba1214e15b8bcf61218c06d0f05", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "04b9184e6541716a3f42ba2405497bfd1cf4bba1214e15b8bcf61218c06d0f05", kill_on_drop: false }`
[INFO] [stdout] 04b9184e6541716a3f42ba2405497bfd1cf4bba1214e15b8bcf61218c06d0f05
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] f65673aa544690150d67cdfb187f5e401af2a6f1bc23b9aab605515a7a953549
[INFO] running `Command { std: "docker" "start" "-a" "f65673aa544690150d67cdfb187f5e401af2a6f1bc23b9aab605515a7a953549", kill_on_drop: false }`
[INFO] [stderr] warning: unused `#[macro_use]` import
[INFO] [stderr]  --> src/lib.rs:4:1
[INFO] [stderr]   |
[INFO] [stderr] 4 | #[macro_use]
[INFO] [stderr]   | ^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Future`
[INFO] [stderr]   --> src/lib.rs:12:49
[INFO] [stderr]    |
[INFO] [stderr] 12 | use futures::{AsyncRead, AsyncSeek, AsyncWrite, Future};
[INFO] [stderr]    |                                                 ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `core::error::Error`
[INFO] [stderr]  --> src/read.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use core::error::Error;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `core::pin::pin`
[INFO] [stderr]  --> src/read.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 | use core::pin::pin;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `either::Either`
[INFO] [stderr]  --> src/read.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 | use either::Either;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `core::error::Error`
[INFO] [stderr]  --> src/seek.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use core::error::Error;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Write`
[INFO] [stderr]  --> src/seek.rs:6:31
[INFO] [stderr]   |
[INFO] [stderr] 6 | use embedded_io_async::{Seek, Write};
[INFO] [stderr]   |                               ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `AsyncRead` and `AsyncWrite`
[INFO] [stderr]  --> src/seek.rs:7:15
[INFO] [stderr]   |
[INFO] [stderr] 7 | use futures::{AsyncRead, AsyncSeek, AsyncWrite, Future};
[INFO] [stderr]   |               ^^^^^^^^^             ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `core::error::Error`
[INFO] [stderr]  --> src/write.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 | use core::error::Error;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `AsyncRead`
[INFO] [stderr]  --> src/write.rs:9:15
[INFO] [stderr]   |
[INFO] [stderr] 9 | use futures::{AsyncRead, AsyncWrite, Future};
[INFO] [stderr]   |               ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/read.rs:39:17
[INFO] [stderr]    |
[INFO] [stderr] 39 |             let mut fut = match state {
[INFO] [stderr]    |                 ----^^^
[INFO] [stderr]    |                 |
[INFO] [stderr]    |                 help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/seek.rs:45:17
[INFO] [stderr]    |
[INFO] [stderr] 45 |             let mut fut = match state {
[INFO] [stderr]    |                 ----^^^
[INFO] [stderr]    |                 |
[INFO] [stderr]    |                 help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/write.rs:48:17
[INFO] [stderr]    |
[INFO] [stderr] 48 |             let mut fut = match state {
[INFO] [stderr]    |                 ----^^^
[INFO] [stderr]    |                 |
[INFO] [stderr]    |                 help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `cx`
[INFO] [stderr]    --> src/write.rs:151:45
[INFO] [stderr]     |
[INFO] [stderr] 151 |         fn poll_close(self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<std::io::Result<()>> {
[INFO] [stderr]     |                                             ^^ help: if this is intentional, prefix it with an underscore: `_cx`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: type alias `BoxFut` is never used
[INFO] [stderr]   --> src/read.rs:28:10
[INFO] [stderr]    |
[INFO] [stderr] 28 |     type BoxFut<T> = Pin<Box<dyn Future<Output = T> + Send>>;
[INFO] [stderr]    |          ^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method `poll_seek` is never used
[INFO] [stderr]    --> src/seek.rs:104:8
[INFO] [stderr]     |
[INFO] [stderr] 103 | impl<R: embedded_io_async::Seek> SimpleAsyncSeeker<R> {
[INFO] [stderr]     | ----------------------------------------------------- method in this implementation
[INFO] [stderr] 104 |     fn poll_seek(
[INFO] [stderr]     |        ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: type alias `BoxFut` is never used
[INFO] [stderr]   --> src/seek.rs:27:10
[INFO] [stderr]    |
[INFO] [stderr] 27 |     type BoxFut<T> = Pin<Box<dyn Future<Output = T> + Send>>;
[INFO] [stderr]    |          ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: type alias `BoxFut` is never used
[INFO] [stderr]   --> src/write.rs:26:6
[INFO] [stderr]    |
[INFO] [stderr] 26 | type BoxFut<T> = Pin<Box<dyn Future<Output = T> + Send>>;
[INFO] [stderr]    |      ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `super::*`
[INFO] [stderr]    --> src/lib.rs:155:9
[INFO] [stderr]     |
[INFO] [stderr] 155 |     use super::*;
[INFO] [stderr]     |         ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `embedded-io-convert` (lib) generated 18 warnings (run `cargo fix --lib -p embedded-io-convert` to apply 13 suggestions)
[INFO] [stderr] warning: `embedded-io-convert` (lib test) generated 19 warnings (18 duplicates) (run `cargo fix --lib -p embedded-io-convert --tests` to apply 1 suggestion)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.10s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/embedded_io_convert-ae516d70a97cb8ce)
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests embedded_io_convert
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "f65673aa544690150d67cdfb187f5e401af2a6f1bc23b9aab605515a7a953549", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f65673aa544690150d67cdfb187f5e401af2a6f1bc23b9aab605515a7a953549", kill_on_drop: false }`
[INFO] [stdout] f65673aa544690150d67cdfb187f5e401af2a6f1bc23b9aab605515a7a953549