[INFO] fetching crate rak811-at-driver 0.2.0...
[INFO] testing rak811-at-driver-0.2.0 against 1.90.0 for beta-1.91-3
[INFO] extracting crate rak811-at-driver 0.2.0 into /workspace/builds/worker-7-tc1/source
[INFO] removed /workspace/builds/worker-7-tc1/source/rust-toolchain.toml
[INFO] started tweaking crates.io crate rak811-at-driver 0.2.0
[INFO] finished tweaking crates.io crate rak811-at-driver 0.2.0
[INFO] tweaked toml for crates.io crate rak811-at-driver 0.2.0 written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate rak811-at-driver 0.2.0 on toolchain 1.90.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.90.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.90.0" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 39 packages to latest compatible versions
[INFO] [stderr]       Adding arrayvec v0.6.1 (available: v0.7.6)
[INFO] [stderr]       Adding embassy-sync v0.1.0 (available: v0.7.2)
[INFO] [stderr]       Adding embassy-time v0.1.5 (available: v0.5.0)
[INFO] [stderr]       Adding embedded-hal v1.0.0-alpha.11 (available: v1.0.0)
[INFO] [stderr]       Adding embedded-hal-async v0.2.0-alpha.2 (available: v1.0.0)
[INFO] [stderr]       Adding embedded-io v0.4.0 (available: v0.7.1)
[INFO] [stderr]       Adding embedded-nal-async v0.3.0 (available: v0.8.0)
[INFO] [stderr]       Adding futures-intrusive v0.4.2 (available: v0.5.0)
[INFO] [stderr]       Adding heapless v0.7.17 (available: v0.9.1)
[INFO] [stderr]       Adding memchr v2.3.4 (available: v2.7.6)
[INFO] [stderr]       Adding nom v6.2.2 (available: v8.0.0)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.90.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded embedded-nal-async v0.3.0
[INFO] [stderr]   Downloaded moveslice v2.0.1
[INFO] [stderr]   Downloaded embedded-io v0.3.1
[INFO] [stderr]   Downloaded embassy-sync v0.1.0
[INFO] [stderr]   Downloaded arrayvec v0.6.1
[INFO] [stderr]   Downloaded embedded-hal-async v0.2.0-alpha.2
[INFO] [stderr]   Downloaded nom v6.2.2
[INFO] [stderr]   Downloaded futures-intrusive v0.4.2
[INFO] [stderr]   Downloaded embassy-time v0.1.5
[INFO] [stderr]   Downloaded embedded-hal v1.0.0-alpha.11
[INFO] [stderr]   Downloaded embedded-nal v0.6.0
[INFO] [stderr]   Downloaded memchr v2.3.4
[INFO] [stderr]   Downloaded no-std-net v0.5.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 408cb240119599f7a8d9ee6278eeb4ffec6e957b1a097ba7b64dcfc02f65d45a
[INFO] running `Command { std: "docker" "start" "-a" "408cb240119599f7a8d9ee6278eeb4ffec6e957b1a097ba7b64dcfc02f65d45a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "408cb240119599f7a8d9ee6278eeb4ffec6e957b1a097ba7b64dcfc02f65d45a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "408cb240119599f7a8d9ee6278eeb4ffec6e957b1a097ba7b64dcfc02f65d45a", kill_on_drop: false }`
[INFO] [stdout] 408cb240119599f7a8d9ee6278eeb4ffec6e957b1a097ba7b64dcfc02f65d45a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 803a942c3f9b17fa019fc872476a80cb9d8172dfe7b0afee9e346bd1956324eb
[INFO] running `Command { std: "docker" "start" "-a" "803a942c3f9b17fa019fc872476a80cb9d8172dfe7b0afee9e346bd1956324eb", kill_on_drop: false }`
[INFO] [stderr]    Compiling stable_deref_trait v1.2.0
[INFO] [stderr]    Compiling nb v1.1.0
[INFO] [stderr]    Compiling futures-core v0.3.31
[INFO] [stderr]    Compiling critical-section v1.2.0
[INFO] [stderr]    Compiling memchr v2.3.4
[INFO] [stderr]    Compiling atomic-polyfill v1.0.3
[INFO] [stderr]    Compiling void v1.0.2
[INFO] [stderr]    Compiling embassy-sync v0.1.0
[INFO] [stderr]    Compiling hash32 v0.2.1
[INFO] [stderr]    Compiling nom v6.2.2
[INFO] [stderr]    Compiling embassy-time v0.1.5
[INFO] [stderr]    Compiling no-std-net v0.5.0
[INFO] [stderr]    Compiling no-std-net v0.6.0
[INFO] [stderr]    Compiling heapless v0.7.17
[INFO] [stderr]    Compiling embedded-io v0.4.0
[INFO] [stderr]    Compiling spin v0.9.8
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/embedded-io-0.4.0/src/lib.rs:2:32
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![cfg_attr(feature = "async", feature(async_fn_in_trait, impl_trait_projections))]
[INFO] [stdout]   |                                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove the attribute
[INFO] [stdout]   |
[INFO] [stdout]   = help: the feature `impl_trait_projections` has been stable since `1.74.0` and no longer requires an attribute to enable
[INFO] [stdout]   = help: the feature `impl_trait_projections` has been stable since `1.74.0` and no longer requires an attribute to enable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling futures-util v0.3.31
[INFO] [stderr]    Compiling embedded-io v0.3.1
[INFO] [stderr]    Compiling embedded-hal v1.0.0-alpha.11
[INFO] [stderr]    Compiling nb v0.1.3
[INFO] [stderr]    Compiling futures-intrusive v0.4.2
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/embedded-io-0.3.1/src/lib.rs:2:32
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![cfg_attr(feature = "async", feature(type_alias_impl_trait))]
[INFO] [stdout]   |                                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: `impl Trait` in associated types is unstable
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/embedded-io-0.3.1/src/asynch.rs:132:27
[INFO] [stdout]     |
[INFO] [stdout] 132 |     type ReadFuture<'a> = impl Future<Output = Result<usize, Self::Error>> + 'a
[INFO] [stdout]     |                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: see issue #63063 <https://github.com/rust-lang/rust/issues/63063> for more information
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: `impl Trait` in associated types is unstable
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/embedded-io-0.3.1/src/asynch.rs:143:30
[INFO] [stdout]     |
[INFO] [stdout] 143 |     type FillBufFuture<'a> = impl Future<Output = Result<&'a [u8], Self::Error>>
[INFO] [stdout]     |                              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: see issue #63063 <https://github.com/rust-lang/rust/issues/63063> for more information
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: `impl Trait` in associated types is unstable
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/embedded-io-0.3.1/src/asynch.rs:157:28
[INFO] [stdout]     |
[INFO] [stdout] 157 |     type WriteFuture<'a> = impl Future<Output = Result<usize, Self::Error>> + 'a
[INFO] [stdout]     |                            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: see issue #63063 <https://github.com/rust-lang/rust/issues/63063> for more information
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: `impl Trait` in associated types is unstable
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/embedded-io-0.3.1/src/asynch.rs:166:28
[INFO] [stdout]     |
[INFO] [stdout] 166 |     type FlushFuture<'a> = impl Future<Output = Result<(), Self::Error>> + 'a
[INFO] [stdout]     |                            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: see issue #63063 <https://github.com/rust-lang/rust/issues/63063> for more information
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: `impl Trait` in associated types is unstable
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/embedded-io-0.3.1/src/asynch.rs:177:27
[INFO] [stdout]     |
[INFO] [stdout] 177 |     type SeekFuture<'a> = impl Future<Output = Result<u64, Self::Error>> + 'a
[INFO] [stdout]     |                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: see issue #63063 <https://github.com/rust-lang/rust/issues/63063> for more information
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: `impl Trait` in associated types is unstable
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/embedded-io-0.3.1/src/asynch.rs:192:27
[INFO] [stdout]     |
[INFO] [stdout] 192 |     type ReadFuture<'a> = impl Future<Output = Result<usize, Self::Error>> + 'a
[INFO] [stdout]     |                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: see issue #63063 <https://github.com/rust-lang/rust/issues/63063> for more information
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: `impl Trait` in associated types is unstable
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/embedded-io-0.3.1/src/asynch.rs:218:30
[INFO] [stdout]     |
[INFO] [stdout] 218 |     type FillBufFuture<'a> = impl Future<Output = Result<&'a [u8], Self::Error>>
[INFO] [stdout]     |                              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: see issue #63063 <https://github.com/rust-lang/rust/issues/63063> for more information
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: `impl Trait` in associated types is unstable
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/embedded-io-0.3.1/src/asynch.rs:243:28
[INFO] [stdout]     |
[INFO] [stdout] 243 |     type WriteFuture<'a> = impl Future<Output = Result<usize, Self::Error>> + 'a
[INFO] [stdout]     |                            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: see issue #63063 <https://github.com/rust-lang/rust/issues/63063> for more information
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: `impl Trait` in associated types is unstable
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/embedded-io-0.3.1/src/asynch.rs:258:28
[INFO] [stdout]     |
[INFO] [stdout] 258 |     type FlushFuture<'a> = impl Future<Output = Result<(), Self::Error>>
[INFO] [stdout]     |                            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: see issue #63063 <https://github.com/rust-lang/rust/issues/63063> for more information
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr]    Compiling embedded-hal v0.2.7
[INFO] [stderr]    Compiling moveslice v2.0.1
[INFO] [stderr] error: could not compile `embedded-io` (lib) due to 1 previous error
[INFO] [stdout] error: unconstrained opaque type
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/embedded-io-0.3.1/src/asynch.rs:10:3
[INFO] [stdout]    |
[INFO] [stdout] 10 | = impl Future<Output = Result<(), ReadExactError<T::Error>>> + 'a;
[INFO] [stdout]    |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `ReadExactFuture` must be used in combination with a concrete type within the same crate
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error: unconstrained opaque type
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/embedded-io-0.3.1/src/asynch.rs:62:3
[INFO] [stdout]    |
[INFO] [stdout] 62 | = impl Future<Output = Result<(), T::Error>> + 'a;
[INFO] [stdout]    |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `WriteAllFuture` must be used in combination with a concrete type within the same crate
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: unconstrained opaque type
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/embedded-io-0.3.1/src/asynch.rs:103:3
[INFO] [stdout]     |
[INFO] [stdout] 103 | = impl Future<Output = Result<(), T::Error>> + 'a;
[INFO] [stdout]     |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `RewindFuture` must be used in combination with a concrete type within the same crate
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/embedded-io-0.3.1/src/asynch.rs:26:9
[INFO] [stdout]    |
[INFO] [stdout] 10 |   = impl Future<Output = Result<(), ReadExactError<T::Error>>> + 'a;
[INFO] [stdout]    |     --------------------------------------------------------------- the expected future
[INFO] [stdout] ...
[INFO] [stdout] 25 |       fn read_exact<'a>(&'a mut self, mut buf: &'a mut [u8]) -> ReadExactFuture<'a, Self> {
[INFO] [stdout]    |                                                                 ------------------------- expected `ReadExactFuture<'a, Self>` because of return type
[INFO] [stdout] 26 | /         async move {
[INFO] [stdout] 27 | |             while !buf.is_empty() {
[INFO] [stdout] 28 | |                 match self.read(buf).await {
[INFO] [stdout] 29 | |                     Ok(0) => break,
[INFO] [stdout] ...  |
[INFO] [stdout] 39 | |         }
[INFO] [stdout]    | |_________^ expected future, found `async` block
[INFO] [stdout]    |
[INFO] [stdout]    = note: expected opaque type `ReadExactFuture<'a, Self>`
[INFO] [stdout]             found `async` block `{async block@/opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/embedded-io-0.3.1/src/asynch.rs:26:9: 26:19}`
[INFO] [stdout] note: this item must have a `#[define_opaque(ReadExactFuture)]` attribute to be able to define hidden types
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/embedded-io-0.3.1/src/asynch.rs:25:8
[INFO] [stdout]    |
[INFO] [stdout] 25 |     fn read_exact<'a>(&'a mut self, mut buf: &'a mut [u8]) -> ReadExactFuture<'a, Self> {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/embedded-io-0.3.1/src/asynch.rs:86:9
[INFO] [stdout]    |
[INFO] [stdout] 62 |   = impl Future<Output = Result<(), T::Error>> + 'a;
[INFO] [stdout]    |     ----------------------------------------------- the expected future
[INFO] [stdout] ...
[INFO] [stdout] 85 |       fn write_all<'a>(&'a mut self, buf: &'a [u8]) -> WriteAllFuture<'a, Self> {
[INFO] [stdout]    |                                                        ------------------------ expected `WriteAllFuture<'a, Self>` because of return type
[INFO] [stdout] 86 | /         async move {
[INFO] [stdout] 87 | |             let mut buf = buf;
[INFO] [stdout] 88 | |             while !buf.is_empty() {
[INFO] [stdout] 89 | |                 match self.write(buf).await {
[INFO] [stdout] ...  |
[INFO] [stdout] 95 | |             Ok(())
[INFO] [stdout] 96 | |         }
[INFO] [stdout]    | |_________^ expected future, found `async` block
[INFO] [stdout]    |
[INFO] [stdout]    = note: expected opaque type `WriteAllFuture<'a, Self>`
[INFO] [stdout]             found `async` block `{async block@/opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/embedded-io-0.3.1/src/asynch.rs:86:9: 86:19}`
[INFO] [stdout] note: this item must have a `#[define_opaque(WriteAllFuture)]` attribute to be able to define hidden types
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/embedded-io-0.3.1/src/asynch.rs:85:8
[INFO] [stdout]    |
[INFO] [stdout] 85 |     fn write_all<'a>(&'a mut self, buf: &'a [u8]) -> WriteAllFuture<'a, Self> {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/embedded-io-0.3.1/src/asynch.rs:119:9
[INFO] [stdout]     |
[INFO] [stdout] 103 |   = impl Future<Output = Result<(), T::Error>> + 'a;
[INFO] [stdout]     |     ----------------------------------------------- the expected future
[INFO] [stdout] ...
[INFO] [stdout] 118 |       fn rewind<'a>(&'a mut self) -> RewindFuture<'a, Self> {
[INFO] [stdout]     |                                      ---------------------- expected `RewindFuture<'a, Self>` because of return type
[INFO] [stdout] 119 | /         async move {
[INFO] [stdout] 120 | |             self.seek(crate::SeekFrom::Start(0)).await?;
[INFO] [stdout] 121 | |             Ok(())
[INFO] [stdout] 122 | |         }
[INFO] [stdout]     | |_________^ expected future, found `async` block
[INFO] [stdout]     |
[INFO] [stdout]     = note: expected opaque type `RewindFuture<'a, Self>`
[INFO] [stdout]              found `async` block `{async block@/opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/embedded-io-0.3.1/src/asynch.rs:119:9: 119:19}`
[INFO] [stdout] note: this item must have a `#[define_opaque(RewindFuture)]` attribute to be able to define hidden types
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/embedded-io-0.3.1/src/asynch.rs:118:8
[INFO] [stdout]     |
[INFO] [stdout] 118 |     fn rewind<'a>(&'a mut self) -> RewindFuture<'a, Self> {
[INFO] [stdout]     |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0308, E0554, E0658.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0308`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `embedded-io` (lib) due to 16 previous errors
[INFO] running `Command { std: "docker" "inspect" "803a942c3f9b17fa019fc872476a80cb9d8172dfe7b0afee9e346bd1956324eb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "803a942c3f9b17fa019fc872476a80cb9d8172dfe7b0afee9e346bd1956324eb", kill_on_drop: false }`
[INFO] [stdout] 803a942c3f9b17fa019fc872476a80cb9d8172dfe7b0afee9e346bd1956324eb
