[INFO] fetching crate sinktools 0.2.0-alpha.4...
[INFO] checking sinktools-0.2.0-alpha.4 against 8773d2c75a8e90130dcce745a7ec4e66bb9963db+rustflags=-Aunfulfilled-lint-expectations for pr-163637
[INFO] extracting crate sinktools 0.2.0-alpha.4 into /workspace/builds/worker-4-tc2/source
[INFO] started tweaking crates.io crate sinktools 0.2.0-alpha.4
[INFO] removed 0 missing tests
[INFO] finished tweaking crates.io crate sinktools 0.2.0-alpha.4
[INFO] tweaked toml for crates.io crate sinktools 0.2.0-alpha.4 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate sinktools 0.2.0-alpha.4 on toolchain 8773d2c75a8e90130dcce745a7ec4e66bb9963db
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8773d2c75a8e90130dcce745a7ec4e66bb9963db" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate sinktools 0.2.0-alpha.4 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" "+8773d2c75a8e90130dcce745a7ec4e66bb9963db" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,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" "-m" "1610612736" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:77db811e55d90add9212f6832c23229e3de5f1c1f9905e8cb07319ea15df73ac" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] ca6e46addc256fb100fa46e8b26fe89cb786546604829bad2237b35aeea4a757
[INFO] running `Command { std: "docker" "start" "ca6e46addc256fb100fa46e8b26fe89cb786546604829bad2237b35aeea4a757", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ca6e46addc256fb100fa46e8b26fe89cb786546604829bad2237b35aeea4a757", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-w" "/opt/rustwide/workdir" "--user" "0:0" "ca6e46addc256fb100fa46e8b26fe89cb786546604829bad2237b35aeea4a757" "/opt/rustwide/cargo-home/bin/cargo" "+8773d2c75a8e90130dcce745a7ec4e66bb9963db" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ca6e46addc256fb100fa46e8b26fe89cb786546604829bad2237b35aeea4a757", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid -Aunfulfilled-lint-expectations" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-w" "/opt/rustwide/workdir" "--user" "0:0" "ca6e46addc256fb100fa46e8b26fe89cb786546604829bad2237b35aeea4a757" "/opt/rustwide/cargo-home/bin/cargo" "+8773d2c75a8e90130dcce745a7ec4e66bb9963db" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr]     Checking rustc-std-workspace-alloc v1.0.1
[INFO] [stderr]     Checking futures-task v0.3.31
[INFO] [stderr]    Compiling quote v1.0.42
[INFO] [stderr]    Compiling hydro_build_utils v0.1.1-alpha.1
[INFO] [stderr]     Checking socket2 v0.6.1
[INFO] [stderr]     Checking mio v1.1.1
[INFO] [stderr]     Checking hashbrown v0.14.5
[INFO] [stderr]    Compiling variadics v0.2.0-alpha.3
[INFO] [stderr]     Checking futures-util v0.3.31
[INFO] [stderr]    Compiling syn v2.0.111
[INFO] [stderr]    Compiling tokio-macros v2.6.0
[INFO] [stderr]    Compiling sealed v0.6.0
[INFO] [stderr]     Checking tokio v1.48.0
[INFO] [stderr]     Checking sinktools v0.2.0-alpha.4 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0277]: the `?` operator can only be used in a closure that returns `Result` or `Option` (or another type that implements `ops::try_trait_old::FromResidual`)
[INFO] [stdout]   --> src/demux_map.rs:43:64
[INFO] [stdout]    |
[INFO] [stdout] 42 |             .try_fold(Poll::Ready(()), |poll, sink| {
[INFO] [stdout]    |                                        ------------ this function should return `Result` or `Option` to accept `?`
[INFO] [stdout] 43 |                 ready_both!(poll, Pin::new(sink).poll_ready(cx)?);
[INFO] [stdout]    |                                                                ^ cannot use the `?` operator in a closure that returns `Poll<Poll<()>>`
[INFO] [stdout]    |
[INFO] [stdout]    = help: the trait `ops::try_trait_old::FromResidual<Result<!, <Si as futures_util::Sink<Item>>::Error>>` is not implemented for `Poll<Poll<()>>`
[INFO] [stdout] help: the following other types implement trait `ops::try_trait_old::FromResidual<R>`
[INFO] [stdout]   --> /rustc/8773d2c75a8e90130dcce745a7ec4e66bb9963db/library/core/src/ops/try_trait_old.rs:300:0
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Poll<Result<T, F>>`
[INFO] [stdout]   ::: /rustc/8773d2c75a8e90130dcce745a7ec4e66bb9963db/library/core/src/ops/try_trait_old.rs:329:0
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Poll<Option<Result<T, F>>>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]   --> src/demux_map.rs:44:29
[INFO] [stdout]    |
[INFO] [stdout] 44 |                 Poll::Ready(Ok(()))
[INFO] [stdout]    |                 ----------- ^^^^^^ expected `Poll<()>`, found `Result<(), _>`
[INFO] [stdout]    |                 |
[INFO] [stdout]    |                 arguments to this enum variant are incorrect
[INFO] [stdout]    |
[INFO] [stdout]    = note: expected enum `Poll<()>`
[INFO] [stdout]               found enum `Result<(), _>`
[INFO] [stdout] help: the type constructed contains `Result<(), _>` due to the type of the argument passed
[INFO] [stdout]   --> src/demux_map.rs:44:17
[INFO] [stdout]    |
[INFO] [stdout] 44 |                 Poll::Ready(Ok(()))
[INFO] [stdout]    |                 ^^^^^^^^^^^^------^
[INFO] [stdout]    |                             |
[INFO] [stdout]    |                             this argument influences the type of `Ready`
[INFO] [stdout] note: tuple variant defined here
[INFO] [stdout]   --> /rustc/8773d2c75a8e90130dcce745a7ec4e66bb9963db/library/core/src/task/poll.rs:17:4
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]   --> src/demux_map.rs:39:9
[INFO] [stdout]    |
[INFO] [stdout] 34 |       fn poll_ready(self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<Result<(), Self::Error>> {
[INFO] [stdout]    |                                                                    ----------------------------- expected `Poll<Result<(), <Si as futures_util::Sink<Item>>::Error>>` because of return type
[INFO] [stdout] ...
[INFO] [stdout] 39 | /         self.get_mut()
[INFO] [stdout] 40 | |             .sinks
[INFO] [stdout] 41 | |             .values_mut()
[INFO] [stdout] 42 | |             .try_fold(Poll::Ready(()), |poll, sink| {
[INFO] [stdout] 43 | |                 ready_both!(poll, Pin::new(sink).poll_ready(cx)?);
[INFO] [stdout] 44 | |                 Poll::Ready(Ok(()))
[INFO] [stdout] 45 | |             })
[INFO] [stdout]    | |______________^ expected `Poll<Result<(), _>>`, found `Poll<Poll<()>>`
[INFO] [stdout]    |
[INFO] [stdout]    = note: expected enum `Poll<Result<(), <Si as futures_util::Sink<Item>>::Error>>`
[INFO] [stdout]               found enum `Poll<Poll<()>>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the `?` operator can only be used in a closure that returns `Result` or `Option` (or another type that implements `ops::try_trait_old::FromResidual`)
[INFO] [stdout]   --> src/demux_map.rs:66:64
[INFO] [stdout]    |
[INFO] [stdout] 65 |             .try_fold(Poll::Ready(()), |poll, sink| {
[INFO] [stdout]    |                                        ------------ this function should return `Result` or `Option` to accept `?`
[INFO] [stdout] 66 |                 ready_both!(poll, Pin::new(sink).poll_flush(cx)?);
[INFO] [stdout]    |                                                                ^ cannot use the `?` operator in a closure that returns `Poll<Poll<()>>`
[INFO] [stdout]    |
[INFO] [stdout]    = help: the trait `ops::try_trait_old::FromResidual<Result<!, <Si as futures_util::Sink<Item>>::Error>>` is not implemented for `Poll<Poll<()>>`
[INFO] [stdout] help: the following other types implement trait `ops::try_trait_old::FromResidual<R>`
[INFO] [stdout]   --> /rustc/8773d2c75a8e90130dcce745a7ec4e66bb9963db/library/core/src/ops/try_trait_old.rs:300:0
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Poll<Result<T, F>>`
[INFO] [stdout]   ::: /rustc/8773d2c75a8e90130dcce745a7ec4e66bb9963db/library/core/src/ops/try_trait_old.rs:329:0
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Poll<Option<Result<T, F>>>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]   --> src/demux_map.rs:67:29
[INFO] [stdout]    |
[INFO] [stdout] 67 |                 Poll::Ready(Ok(()))
[INFO] [stdout]    |                 ----------- ^^^^^^ expected `Poll<()>`, found `Result<(), _>`
[INFO] [stdout]    |                 |
[INFO] [stdout]    |                 arguments to this enum variant are incorrect
[INFO] [stdout]    |
[INFO] [stdout]    = note: expected enum `Poll<()>`
[INFO] [stdout]               found enum `Result<(), _>`
[INFO] [stdout] help: the type constructed contains `Result<(), _>` due to the type of the argument passed
[INFO] [stdout]   --> src/demux_map.rs:67:17
[INFO] [stdout]    |
[INFO] [stdout] 67 |                 Poll::Ready(Ok(()))
[INFO] [stdout]    |                 ^^^^^^^^^^^^------^
[INFO] [stdout]    |                             |
[INFO] [stdout]    |                             this argument influences the type of `Ready`
[INFO] [stdout] note: tuple variant defined here
[INFO] [stdout]   --> /rustc/8773d2c75a8e90130dcce745a7ec4e66bb9963db/library/core/src/task/poll.rs:17:4
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]   --> src/demux_map.rs:62:9
[INFO] [stdout]    |
[INFO] [stdout] 57 |       fn poll_flush(self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<Result<(), Self::Error>> {
[INFO] [stdout]    |                                                                    ----------------------------- expected `Poll<Result<(), <Si as futures_util::Sink<Item>>::Error>>` because of return type
[INFO] [stdout] ...
[INFO] [stdout] 62 | /         self.get_mut()
[INFO] [stdout] 63 | |             .sinks
[INFO] [stdout] 64 | |             .values_mut()
[INFO] [stdout] 65 | |             .try_fold(Poll::Ready(()), |poll, sink| {
[INFO] [stdout] 66 | |                 ready_both!(poll, Pin::new(sink).poll_flush(cx)?);
[INFO] [stdout] 67 | |                 Poll::Ready(Ok(()))
[INFO] [stdout] 68 | |             })
[INFO] [stdout]    | |______________^ expected `Poll<Result<(), _>>`, found `Poll<Poll<()>>`
[INFO] [stdout]    |
[INFO] [stdout]    = note: expected enum `Poll<Result<(), <Si as futures_util::Sink<Item>>::Error>>`
[INFO] [stdout]               found enum `Poll<Poll<()>>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the `?` operator can only be used in a closure that returns `Result` or `Option` (or another type that implements `ops::try_trait_old::FromResidual`)
[INFO] [stdout]   --> src/demux_map.rs:80:64
[INFO] [stdout]    |
[INFO] [stdout] 79 |             .try_fold(Poll::Ready(()), |poll, sink| {
[INFO] [stdout]    |                                        ------------ this function should return `Result` or `Option` to accept `?`
[INFO] [stdout] 80 |                 ready_both!(poll, Pin::new(sink).poll_close(cx)?);
[INFO] [stdout]    |                                                                ^ cannot use the `?` operator in a closure that returns `Poll<Poll<()>>`
[INFO] [stdout]    |
[INFO] [stdout]    = help: the trait `ops::try_trait_old::FromResidual<Result<!, <Si as futures_util::Sink<Item>>::Error>>` is not implemented for `Poll<Poll<()>>`
[INFO] [stdout] help: the following other types implement trait `ops::try_trait_old::FromResidual<R>`
[INFO] [stdout]   --> /rustc/8773d2c75a8e90130dcce745a7ec4e66bb9963db/library/core/src/ops/try_trait_old.rs:300:0
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Poll<Result<T, F>>`
[INFO] [stdout]   ::: /rustc/8773d2c75a8e90130dcce745a7ec4e66bb9963db/library/core/src/ops/try_trait_old.rs:329:0
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Poll<Option<Result<T, F>>>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]   --> src/demux_map.rs:81:29
[INFO] [stdout]    |
[INFO] [stdout] 81 |                 Poll::Ready(Ok(()))
[INFO] [stdout]    |                 ----------- ^^^^^^ expected `Poll<()>`, found `Result<(), _>`
[INFO] [stdout]    |                 |
[INFO] [stdout]    |                 arguments to this enum variant are incorrect
[INFO] [stdout]    |
[INFO] [stdout]    = note: expected enum `Poll<()>`
[INFO] [stdout]               found enum `Result<(), _>`
[INFO] [stdout] help: the type constructed contains `Result<(), _>` due to the type of the argument passed
[INFO] [stdout]   --> src/demux_map.rs:81:17
[INFO] [stdout]    |
[INFO] [stdout] 81 |                 Poll::Ready(Ok(()))
[INFO] [stdout]    |                 ^^^^^^^^^^^^------^
[INFO] [stdout]    |                             |
[INFO] [stdout]    |                             this argument influences the type of `Ready`
[INFO] [stdout] note: tuple variant defined here
[INFO] [stdout]   --> /rustc/8773d2c75a8e90130dcce745a7ec4e66bb9963db/library/core/src/task/poll.rs:17:4
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]   --> src/demux_map.rs:76:9
[INFO] [stdout]    |
[INFO] [stdout] 71 |       fn poll_close(self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<Result<(), Self::Error>> {
[INFO] [stdout]    |                                                                    ----------------------------- expected `Poll<Result<(), <Si as futures_util::Sink<Item>>::Error>>` because of return type
[INFO] [stdout] ...
[INFO] [stdout] 76 | /         self.get_mut()
[INFO] [stdout] 77 | |             .sinks
[INFO] [stdout] 78 | |             .values_mut()
[INFO] [stdout] 79 | |             .try_fold(Poll::Ready(()), |poll, sink| {
[INFO] [stdout] 80 | |                 ready_both!(poll, Pin::new(sink).poll_close(cx)?);
[INFO] [stdout] 81 | |                 Poll::Ready(Ok(()))
[INFO] [stdout] 82 | |             })
[INFO] [stdout]    | |______________^ expected `Poll<Result<(), _>>`, found `Poll<Poll<()>>`
[INFO] [stdout]    |
[INFO] [stdout]    = note: expected enum `Poll<Result<(), <Si as futures_util::Sink<Item>>::Error>>`
[INFO] [stdout]               found enum `Poll<Poll<()>>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the `?` operator can only be used in a closure that returns `Result` or `Option` (or another type that implements `ops::try_trait_old::FromResidual`)
[INFO] [stdout]   --> src/demux_map_lazy.rs:46:64
[INFO] [stdout]    |
[INFO] [stdout] 45 |             .try_fold(Poll::Ready(()), |poll, sink| {
[INFO] [stdout]    |                                        ------------ this function should return `Result` or `Option` to accept `?`
[INFO] [stdout] 46 |                 ready_both!(poll, Pin::new(sink).poll_ready(cx)?);
[INFO] [stdout]    |                                                                ^ cannot use the `?` operator in a closure that returns `Poll<Poll<()>>`
[INFO] [stdout]    |
[INFO] [stdout]    = help: the trait `ops::try_trait_old::FromResidual<Result<!, <Si as futures_util::Sink<Item>>::Error>>` is not implemented for `Poll<Poll<()>>`
[INFO] [stdout] help: the following other types implement trait `ops::try_trait_old::FromResidual<R>`
[INFO] [stdout]   --> /rustc/8773d2c75a8e90130dcce745a7ec4e66bb9963db/library/core/src/ops/try_trait_old.rs:300:0
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Poll<Result<T, F>>`
[INFO] [stdout]   ::: /rustc/8773d2c75a8e90130dcce745a7ec4e66bb9963db/library/core/src/ops/try_trait_old.rs:329:0
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Poll<Option<Result<T, F>>>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]   --> src/demux_map_lazy.rs:47:29
[INFO] [stdout]    |
[INFO] [stdout] 47 |                 Poll::Ready(Ok(()))
[INFO] [stdout]    |                 ----------- ^^^^^^ expected `Poll<()>`, found `Result<(), _>`
[INFO] [stdout]    |                 |
[INFO] [stdout]    |                 arguments to this enum variant are incorrect
[INFO] [stdout]    |
[INFO] [stdout]    = note: expected enum `Poll<()>`
[INFO] [stdout]               found enum `Result<(), _>`
[INFO] [stdout] help: the type constructed contains `Result<(), _>` due to the type of the argument passed
[INFO] [stdout]   --> src/demux_map_lazy.rs:47:17
[INFO] [stdout]    |
[INFO] [stdout] 47 |                 Poll::Ready(Ok(()))
[INFO] [stdout]    |                 ^^^^^^^^^^^^------^
[INFO] [stdout]    |                             |
[INFO] [stdout]    |                             this argument influences the type of `Ready`
[INFO] [stdout] note: tuple variant defined here
[INFO] [stdout]   --> /rustc/8773d2c75a8e90130dcce745a7ec4e66bb9963db/library/core/src/task/poll.rs:17:4
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]   --> src/demux_map_lazy.rs:42:9
[INFO] [stdout]    |
[INFO] [stdout] 37 |       fn poll_ready(self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<Result<(), Self::Error>> {
[INFO] [stdout]    |                                                                    ----------------------------- expected `Poll<Result<(), <Si as futures_util::Sink<Item>>::Error>>` because of return type
[INFO] [stdout] ...
[INFO] [stdout] 42 | /         self.get_mut()
[INFO] [stdout] 43 | |             .sinks
[INFO] [stdout] 44 | |             .values_mut()
[INFO] [stdout] 45 | |             .try_fold(Poll::Ready(()), |poll, sink| {
[INFO] [stdout] 46 | |                 ready_both!(poll, Pin::new(sink).poll_ready(cx)?);
[INFO] [stdout] 47 | |                 Poll::Ready(Ok(()))
[INFO] [stdout] 48 | |             })
[INFO] [stdout]    | |______________^ expected `Poll<Result<(), _>>`, found `Poll<Poll<()>>`
[INFO] [stdout]    |
[INFO] [stdout]    = note: expected enum `Poll<Result<(), <Si as futures_util::Sink<Item>>::Error>>`
[INFO] [stdout]               found enum `Poll<Poll<()>>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the `?` operator can only be used in a closure that returns `Result` or `Option` (or another type that implements `ops::try_trait_old::FromResidual`)
[INFO] [stdout]   --> src/demux_map_lazy.rs:69:64
[INFO] [stdout]    |
[INFO] [stdout] 68 |             .try_fold(Poll::Ready(()), |poll, sink| {
[INFO] [stdout]    |                                        ------------ this function should return `Result` or `Option` to accept `?`
[INFO] [stdout] 69 |                 ready_both!(poll, Pin::new(sink).poll_flush(cx)?);
[INFO] [stdout]    |                                                                ^ cannot use the `?` operator in a closure that returns `Poll<Poll<()>>`
[INFO] [stdout]    |
[INFO] [stdout]    = help: the trait `ops::try_trait_old::FromResidual<Result<!, <Si as futures_util::Sink<Item>>::Error>>` is not implemented for `Poll<Poll<()>>`
[INFO] [stdout] help: the following other types implement trait `ops::try_trait_old::FromResidual<R>`
[INFO] [stdout]   --> /rustc/8773d2c75a8e90130dcce745a7ec4e66bb9963db/library/core/src/ops/try_trait_old.rs:300:0
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Poll<Result<T, F>>`
[INFO] [stdout]   ::: /rustc/8773d2c75a8e90130dcce745a7ec4e66bb9963db/library/core/src/ops/try_trait_old.rs:329:0
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Poll<Option<Result<T, F>>>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]   --> src/demux_map_lazy.rs:70:29
[INFO] [stdout]    |
[INFO] [stdout] 70 |                 Poll::Ready(Ok(()))
[INFO] [stdout]    |                 ----------- ^^^^^^ expected `Poll<()>`, found `Result<(), _>`
[INFO] [stdout]    |                 |
[INFO] [stdout]    |                 arguments to this enum variant are incorrect
[INFO] [stdout]    |
[INFO] [stdout]    = note: expected enum `Poll<()>`
[INFO] [stdout]               found enum `Result<(), _>`
[INFO] [stdout] help: the type constructed contains `Result<(), _>` due to the type of the argument passed
[INFO] [stdout]   --> src/demux_map_lazy.rs:70:17
[INFO] [stdout]    |
[INFO] [stdout] 70 |                 Poll::Ready(Ok(()))
[INFO] [stdout]    |                 ^^^^^^^^^^^^------^
[INFO] [stdout]    |                             |
[INFO] [stdout]    |                             this argument influences the type of `Ready`
[INFO] [stdout] note: tuple variant defined here
[INFO] [stdout]   --> /rustc/8773d2c75a8e90130dcce745a7ec4e66bb9963db/library/core/src/task/poll.rs:17:4
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]   --> src/demux_map_lazy.rs:65:9
[INFO] [stdout]    |
[INFO] [stdout] 60 |       fn poll_flush(self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<Result<(), Self::Error>> {
[INFO] [stdout]    |                                                                    ----------------------------- expected `Poll<Result<(), <Si as futures_util::Sink<Item>>::Error>>` because of return type
[INFO] [stdout] ...
[INFO] [stdout] 65 | /         self.get_mut()
[INFO] [stdout] 66 | |             .sinks
[INFO] [stdout] 67 | |             .values_mut()
[INFO] [stdout] 68 | |             .try_fold(Poll::Ready(()), |poll, sink| {
[INFO] [stdout] 69 | |                 ready_both!(poll, Pin::new(sink).poll_flush(cx)?);
[INFO] [stdout] 70 | |                 Poll::Ready(Ok(()))
[INFO] [stdout] 71 | |             })
[INFO] [stdout]    | |______________^ expected `Poll<Result<(), _>>`, found `Poll<Poll<()>>`
[INFO] [stdout]    |
[INFO] [stdout]    = note: expected enum `Poll<Result<(), <Si as futures_util::Sink<Item>>::Error>>`
[INFO] [stdout]               found enum `Poll<Poll<()>>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the `?` operator can only be used in a closure that returns `Result` or `Option` (or another type that implements `ops::try_trait_old::FromResidual`)
[INFO] [stdout]   --> src/demux_map_lazy.rs:83:64
[INFO] [stdout]    |
[INFO] [stdout] 82 |             .try_fold(Poll::Ready(()), |poll, sink| {
[INFO] [stdout]    |                                        ------------ this function should return `Result` or `Option` to accept `?`
[INFO] [stdout] 83 |                 ready_both!(poll, Pin::new(sink).poll_close(cx)?);
[INFO] [stdout]    |                                                                ^ cannot use the `?` operator in a closure that returns `Poll<Poll<()>>`
[INFO] [stdout]    |
[INFO] [stdout]    = help: the trait `ops::try_trait_old::FromResidual<Result<!, <Si as futures_util::Sink<Item>>::Error>>` is not implemented for `Poll<Poll<()>>`
[INFO] [stdout] help: the following other types implement trait `ops::try_trait_old::FromResidual<R>`
[INFO] [stdout]   --> /rustc/8773d2c75a8e90130dcce745a7ec4e66bb9963db/library/core/src/ops/try_trait_old.rs:300:0
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Poll<Result<T, F>>`
[INFO] [stdout]   ::: /rustc/8773d2c75a8e90130dcce745a7ec4e66bb9963db/library/core/src/ops/try_trait_old.rs:329:0
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Poll<Option<Result<T, F>>>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]   --> src/demux_map_lazy.rs:84:29
[INFO] [stdout]    |
[INFO] [stdout] 84 |                 Poll::Ready(Ok(()))
[INFO] [stdout]    |                 ----------- ^^^^^^ expected `Poll<()>`, found `Result<(), _>`
[INFO] [stdout]    |                 |
[INFO] [stdout]    |                 arguments to this enum variant are incorrect
[INFO] [stdout]    |
[INFO] [stdout]    = note: expected enum `Poll<()>`
[INFO] [stdout]               found enum `Result<(), _>`
[INFO] [stdout] help: the type constructed contains `Result<(), _>` due to the type of the argument passed
[INFO] [stdout]   --> src/demux_map_lazy.rs:84:17
[INFO] [stdout]    |
[INFO] [stdout] 84 |                 Poll::Ready(Ok(()))
[INFO] [stdout]    |                 ^^^^^^^^^^^^------^
[INFO] [stdout]    |                             |
[INFO] [stdout]    |                             this argument influences the type of `Ready`
[INFO] [stdout] note: tuple variant defined here
[INFO] [stdout]   --> /rustc/8773d2c75a8e90130dcce745a7ec4e66bb9963db/library/core/src/task/poll.rs:17:4
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]   --> src/demux_map_lazy.rs:79:9
[INFO] [stdout]    |
[INFO] [stdout] 74 |       fn poll_close(self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<Result<(), Self::Error>> {
[INFO] [stdout]    |                                                                    ----------------------------- expected `Poll<Result<(), <Si as futures_util::Sink<Item>>::Error>>` because of return type
[INFO] [stdout] ...
[INFO] [stdout] 79 | /         self.get_mut()
[INFO] [stdout] 80 | |             .sinks
[INFO] [stdout] 81 | |             .values_mut()
[INFO] [stdout] 82 | |             .try_fold(Poll::Ready(()), |poll, sink| {
[INFO] [stdout] 83 | |                 ready_both!(poll, Pin::new(sink).poll_close(cx)?);
[INFO] [stdout] 84 | |                 Poll::Ready(Ok(()))
[INFO] [stdout] 85 | |             })
[INFO] [stdout]    | |______________^ expected `Poll<Result<(), _>>`, found `Poll<Poll<()>>`
[INFO] [stdout]    |
[INFO] [stdout]    = note: expected enum `Poll<Result<(), <Si as futures_util::Sink<Item>>::Error>>`
[INFO] [stdout]               found enum `Poll<Poll<()>>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0277, E0308.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0277`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `sinktools` (lib) due to 18 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "ca6e46addc256fb100fa46e8b26fe89cb786546604829bad2237b35aeea4a757", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ca6e46addc256fb100fa46e8b26fe89cb786546604829bad2237b35aeea4a757", kill_on_drop: false }`
[INFO] [stdout] ca6e46addc256fb100fa46e8b26fe89cb786546604829bad2237b35aeea4a757
