[INFO] fetching crate xy-rpc 0.2.0...
[INFO] testing xy-rpc-0.2.0 against 1.91.0 for beta-1.92-2
[INFO] extracting crate xy-rpc 0.2.0 into /workspace/builds/worker-2-tc1/source
[INFO] started tweaking crates.io crate xy-rpc 0.2.0
[INFO] removed 0 missing examples
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[INFO] finished tweaking crates.io crate xy-rpc 0.2.0
[INFO] tweaked toml for crates.io crate xy-rpc 0.2.0 written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate xy-rpc 0.2.0 on toolchain 1.91.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.91.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate xy-rpc 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" "+1.91.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+1.91.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
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[INFO] running `Command { std: "docker" "start" "-a" "9e7179374fbb6c447677b34497811f1c9d77c226dd68d069a49c869d180ceca8", kill_on_drop: false }`
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+1.91.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
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[INFO] running `Command { std: "docker" "start" "-a" "a45aa4308f0718212ae8a4907d4336a5247cf247cdd26afbb0e7107ae67c2928", kill_on_drop: false }`
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[INFO] running `Command { std: "docker" "inspect" "a45aa4308f0718212ae8a4907d4336a5247cf247cdd26afbb0e7107ae67c2928", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a45aa4308f0718212ae8a4907d4336a5247cf247cdd26afbb0e7107ae67c2928", kill_on_drop: false }`
[INFO] [stdout] a45aa4308f0718212ae8a4907d4336a5247cf247cdd26afbb0e7107ae67c2928
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+1.91.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
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[INFO] running `Command { std: "docker" "start" "-a" "5cbb6dbc98d9b4c95ded3d3b559b10b48b85cd4e9186f98f57b355721161ce26", kill_on_drop: false }`
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[INFO] [stdout] error[E0432]: unresolved import `xy_rpc::tokio`
[INFO] [stdout]  --> examples/custom_serde_format.rs:5:13
[INFO] [stdout]   |
[INFO] [stdout] 5 | use xy_rpc::tokio::{serve_duplex_from_tokio, serve_duplex_tokio};
[INFO] [stdout]   |             ^^^^^ could not find `tokio` in `xy_rpc`
[INFO] [stdout]   |
[INFO] [stdout] note: found an item that was configured out
[INFO] [stdout]  --> /opt/rustwide/workdir/src/lib.rs:7:9
[INFO] [stdout]   |
[INFO] [stdout] 6 | #[cfg(feature = "rt_tokio_without_send_sync")]
[INFO] [stdout]   |       -------------------------------------- the item is gated behind the `rt_tokio_without_send_sync` feature
[INFO] [stdout] 7 | pub mod tokio;
[INFO] [stdout]   |         ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0432]: unresolved import `xy_rpc::tokio`
[INFO] [stdout]  --> examples/unidirectional_rpc_example/caller.rs:4:13
[INFO] [stdout]   |
[INFO] [stdout] 4 | use xy_rpc::tokio::ChannelBuilderTokioExt;
[INFO] [stdout]   |             ^^^^^ could not find `tokio` in `xy_rpc`
[INFO] [stdout]   |
[INFO] [stdout] note: found an item that was configured out
[INFO] [stdout]  --> /opt/rustwide/workdir/src/lib.rs:7:9
[INFO] [stdout]   |
[INFO] [stdout] 6 | #[cfg(feature = "rt_tokio_without_send_sync")]
[INFO] [stdout]   |       -------------------------------------- the item is gated behind the `rt_tokio_without_send_sync` feature
[INFO] [stdout] 7 | pub mod tokio;
[INFO] [stdout]   |         ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0432]: unresolved import `xy_rpc::formats::JsonFormat`
[INFO] [stdout]   --> examples/axum_example.rs:5:5
[INFO] [stdout]    |
[INFO] [stdout]  5 | use xy_rpc::formats::JsonFormat;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^ no `JsonFormat` in `formats`
[INFO] [stdout]    |
[INFO] [stdout] note: found an item that was configured out
[INFO] [stdout]   --> /opt/rustwide/workdir/src/formats.rs:24:12
[INFO] [stdout]    |
[INFO] [stdout] 22 | #[cfg(feature = "format_json")]
[INFO] [stdout]    |       ----------------------- the item is gated behind the `format_json` feature
[INFO] [stdout] 23 | #[derive(Clone, Default, Debug)]
[INFO] [stdout] 24 | pub struct JsonFormat;
[INFO] [stdout]    |            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0432]: unresolved import `xy_rpc::tokio`
[INFO] [stdout]  --> examples/axum_example.rs:6:13
[INFO] [stdout]   |
[INFO] [stdout] 6 | use xy_rpc::tokio::serve_duplex_tokio;
[INFO] [stdout]   |             ^^^^^ could not find `tokio` in `xy_rpc`
[INFO] [stdout]   |
[INFO] [stdout] note: found an item that was configured out
[INFO] [stdout]  --> /opt/rustwide/workdir/src/lib.rs:7:9
[INFO] [stdout]   |
[INFO] [stdout] 6 | #[cfg(feature = "rt_tokio_without_send_sync")]
[INFO] [stdout]   |       -------------------------------------- the item is gated behind the `rt_tokio_without_send_sync` feature
[INFO] [stdout] 7 | pub mod tokio;
[INFO] [stdout]   |         ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0432]: unresolved import `xy_rpc::formats::JsonFormat`
[INFO] [stdout]   --> examples/unidirectional_rpc_example/proto.rs:1:14
[INFO] [stdout]    |
[INFO] [stdout]  1 | use xy_rpc::{formats::JsonFormat, rpc_service};
[INFO] [stdout]    |              ^^^^^^^^^^^^^^^^^^^ no `JsonFormat` in `formats`
[INFO] [stdout]    |
[INFO] [stdout] note: found an item that was configured out
[INFO] [stdout]   --> /opt/rustwide/workdir/src/formats.rs:24:12
[INFO] [stdout]    |
[INFO] [stdout] 22 | #[cfg(feature = "format_json")]
[INFO] [stdout]    |       ----------------------- the item is gated behind the `format_json` feature
[INFO] [stdout] 23 | #[derive(Clone, Default, Debug)]
[INFO] [stdout] 24 | pub struct JsonFormat;
[INFO] [stdout]    |            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0432]: unresolved import `xy_rpc::tokio`
[INFO] [stdout]  --> examples/unidirectional_rpc_example/service.rs:3:13
[INFO] [stdout]   |
[INFO] [stdout] 3 | use xy_rpc::tokio::ChannelBuilderTokioExt;
[INFO] [stdout]   |             ^^^^^ could not find `tokio` in `xy_rpc`
[INFO] [stdout]   |
[INFO] [stdout] note: found an item that was configured out
[INFO] [stdout]  --> /opt/rustwide/workdir/src/lib.rs:7:9
[INFO] [stdout]   |
[INFO] [stdout] 6 | #[cfg(feature = "rt_tokio_without_send_sync")]
[INFO] [stdout]   |       -------------------------------------- the item is gated behind the `rt_tokio_without_send_sync` feature
[INFO] [stdout] 7 | pub mod tokio;
[INFO] [stdout]   |         ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `FutureExt` and `StreamExt`
[INFO] [stdout]  --> examples/axum_example.rs:1:20
[INFO] [stdout]   |
[INFO] [stdout] 1 | use futures_util::{FutureExt, StreamExt};
[INFO] [stdout]   |                    ^^^^^^^^^  ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::future::Future`
[INFO] [stdout]  --> examples/axum_example.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::future::Future;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::time::Duration`
[INFO] [stdout]  --> examples/axum_example.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::time::Duration;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0432]: unresolved import `xy_rpc::formats::JsonFormat`
[INFO] [stdout]   --> examples/unidirectional_rpc_example/proto.rs:1:14
[INFO] [stdout]    |
[INFO] [stdout]  1 | use xy_rpc::{formats::JsonFormat, rpc_service};
[INFO] [stdout]    |              ^^^^^^^^^^^^^^^^^^^ no `JsonFormat` in `formats`
[INFO] [stdout]    |
[INFO] [stdout] note: found an item that was configured out
[INFO] [stdout]   --> /opt/rustwide/workdir/src/formats.rs:24:12
[INFO] [stdout]    |
[INFO] [stdout] 22 | #[cfg(feature = "format_json")]
[INFO] [stdout]    |       ----------------------- the item is gated behind the `format_json` feature
[INFO] [stdout] 23 | #[derive(Clone, Default, Debug)]
[INFO] [stdout] 24 | pub struct JsonFormat;
[INFO] [stdout]    |            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `select` and `try_join`
[INFO] [stdout]  --> examples/axum_example.rs:4:13
[INFO] [stdout]   |
[INFO] [stdout] 4 | use tokio::{select, try_join};
[INFO] [stdout]   |             ^^^^^^  ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `xy_rpc_macro::rpc_service`
[INFO] [stdout]  --> examples/axum_example.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use xy_rpc_macro::rpc_service;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0432]: unresolved import `xy_rpc::tokio`
[INFO] [stdout]  --> examples/bidirectional_rpc_example/acceptor.rs:4:13
[INFO] [stdout]   |
[INFO] [stdout] 4 | use xy_rpc::tokio::ChannelBuilderTokioExt;
[INFO] [stdout]   |             ^^^^^ could not find `tokio` in `xy_rpc`
[INFO] [stdout]   |
[INFO] [stdout] note: found an item that was configured out
[INFO] [stdout]  --> /opt/rustwide/workdir/src/lib.rs:7:9
[INFO] [stdout]   |
[INFO] [stdout] 6 | #[cfg(feature = "rt_tokio_without_send_sync")]
[INFO] [stdout]   |       -------------------------------------- the item is gated behind the `rt_tokio_without_send_sync` feature
[INFO] [stdout] 7 | pub mod tokio;
[INFO] [stdout]   |         ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0432]: unresolved import `xy_rpc::formats::JsonFormat`
[INFO] [stdout]   --> examples/bidirectional_rpc_example/proto.rs:1:14
[INFO] [stdout]    |
[INFO] [stdout]  1 | use xy_rpc::{formats::JsonFormat, rpc_service};
[INFO] [stdout]    |              ^^^^^^^^^^^^^^^^^^^ no `JsonFormat` in `formats`
[INFO] [stdout]    |
[INFO] [stdout] note: found an item that was configured out
[INFO] [stdout]   --> /opt/rustwide/workdir/src/formats.rs:24:12
[INFO] [stdout]    |
[INFO] [stdout] 22 | #[cfg(feature = "format_json")]
[INFO] [stdout]    |       ----------------------- the item is gated behind the `format_json` feature
[INFO] [stdout] 23 | #[derive(Clone, Default, Debug)]
[INFO] [stdout] 24 | pub struct JsonFormat;
[INFO] [stdout]    |            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0432]: unresolved import `xy_rpc::tokio`
[INFO] [stdout]  --> examples/bidirectional_rpc_example/connector.rs:5:13
[INFO] [stdout]   |
[INFO] [stdout] 5 | use xy_rpc::tokio::ChannelBuilderTokioExt;
[INFO] [stdout]   |             ^^^^^ could not find `tokio` in `xy_rpc`
[INFO] [stdout]   |
[INFO] [stdout] note: found an item that was configured out
[INFO] [stdout]  --> /opt/rustwide/workdir/src/lib.rs:7:9
[INFO] [stdout]   |
[INFO] [stdout] 6 | #[cfg(feature = "rt_tokio_without_send_sync")]
[INFO] [stdout]   |       -------------------------------------- the item is gated behind the `rt_tokio_without_send_sync` feature
[INFO] [stdout] 7 | pub mod tokio;
[INFO] [stdout]   |         ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0432]: unresolved import `xy_rpc::formats::JsonFormat`
[INFO] [stdout]   --> examples/bidirectional_rpc_example/proto.rs:1:14
[INFO] [stdout]    |
[INFO] [stdout]  1 | use xy_rpc::{formats::JsonFormat, rpc_service};
[INFO] [stdout]    |              ^^^^^^^^^^^^^^^^^^^ no `JsonFormat` in `formats`
[INFO] [stdout]    |
[INFO] [stdout] note: found an item that was configured out
[INFO] [stdout]   --> /opt/rustwide/workdir/src/formats.rs:24:12
[INFO] [stdout]    |
[INFO] [stdout] 22 | #[cfg(feature = "format_json")]
[INFO] [stdout]    |       ----------------------- the item is gated behind the `format_json` feature
[INFO] [stdout] 23 | #[derive(Clone, Default, Debug)]
[INFO] [stdout] 24 | pub struct JsonFormat;
[INFO] [stdout]    |            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0432`.
[INFO] [stdout] 
[INFO] [stdout] error[E0432]: unresolved import `xy_rpc::formats::JsonFormat`
[INFO] [stdout]   --> tests/duplex.rs:53:9
[INFO] [stdout]    |
[INFO] [stdout] 53 |     use xy_rpc::formats::JsonFormat;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^ no `JsonFormat` in `formats`
[INFO] [stdout]    |
[INFO] [stdout] note: found an item that was configured out
[INFO] [stdout]   --> /opt/rustwide/workdir/src/formats.rs:24:12
[INFO] [stdout]    |
[INFO] [stdout] 22 | #[cfg(feature = "format_json")]
[INFO] [stdout]    |       ----------------------- the item is gated behind the `format_json` feature
[INFO] [stdout] 23 | #[derive(Clone, Default, Debug)]
[INFO] [stdout] 24 | pub struct JsonFormat;
[INFO] [stdout]    |            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0432]: unresolved import `xy_rpc::tokio`
[INFO] [stdout]   --> tests/duplex.rs:54:17
[INFO] [stdout]    |
[INFO] [stdout] 54 |     use xy_rpc::tokio::serve_duplex_tokio;
[INFO] [stdout]    |                 ^^^^^ could not find `tokio` in `xy_rpc`
[INFO] [stdout]    |
[INFO] [stdout] note: found an item that was configured out
[INFO] [stdout]   --> /opt/rustwide/workdir/src/lib.rs:7:9
[INFO] [stdout]    |
[INFO] [stdout]  6 | #[cfg(feature = "rt_tokio_without_send_sync")]
[INFO] [stdout]    |       -------------------------------------- the item is gated behind the `rt_tokio_without_send_sync` feature
[INFO] [stdout]  7 | pub mod tokio;
[INFO] [stdout]    |         ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `xy-rpc` (example "axum_example") due to 2 previous errors; 5 warnings emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] warning: impl trait in impl method signature does not match trait method signature
[INFO] [stdout]   --> examples/unidirectional_rpc_example/service.rs:11:85
[INFO] [stdout]    |
[INFO] [stdout] 11 |     fn hello(&self, content: String, param2: u32) -> impl Future<Output = String> + Send {
[INFO] [stdout]    |                                                                                     ^^^^ this bound is stronger than that defined on the trait
[INFO] [stdout]    |
[INFO] [stdout]   ::: examples/unidirectional_rpc_example/proto.rs:6:1
[INFO] [stdout]    |
[INFO] [stdout]  6 | #[rpc_service]
[INFO] [stdout]    | -------------- return type from trait method defined here
[INFO] [stdout]    |
[INFO] [stdout]    = note: add `#[allow(refining_impl_trait)]` if it is intended for this to be part of the public API of this crate
[INFO] [stdout]    = note: we are soliciting feedback, see issue #121718 <https://github.com/rust-lang/rust/issues/121718> for more information
[INFO] [stdout]    = note: `#[warn(refining_impl_trait_reachable)]` (part of `#[warn(refining_impl_trait)]`) on by default
[INFO] [stdout] help: replace the return type so that it matches the trait
[INFO] [stdout]    |
[INFO] [stdout] 11 -     fn hello(&self, content: String, param2: u32) -> impl Future<Output = String> + Send {
[INFO] [stdout] 11 +     fn hello(&self, content: String, param2: u32) -> impl Future<Output = std::string::String> + MaybeSend {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: impl trait in impl method signature does not match trait method signature
[INFO] [stdout]   --> examples/custom_serde_format.rs:33:85
[INFO] [stdout]    |
[INFO] [stdout] 19 | #[rpc_service]
[INFO] [stdout]    | -------------- return type from trait method defined here
[INFO] [stdout] ...
[INFO] [stdout] 33 |     fn hello1(&self, mut content: ComplexObj) -> impl Future<Output = ComplexObj> + Send {
[INFO] [stdout]    |                                                                                     ^^^^ this bound is stronger than that defined on the trait
[INFO] [stdout]    |
[INFO] [stdout]    = note: add `#[allow(refining_impl_trait)]` if it is intended for this to be part of the public API of this crate
[INFO] [stdout]    = note: we are soliciting feedback, see issue #121718 <https://github.com/rust-lang/rust/issues/121718> for more information
[INFO] [stdout]    = note: `#[warn(refining_impl_trait_internal)]` (part of `#[warn(refining_impl_trait)]`) on by default
[INFO] [stdout] help: replace the return type so that it matches the trait
[INFO] [stdout]    |
[INFO] [stdout] 33 -     fn hello1(&self, mut content: ComplexObj) -> impl Future<Output = ComplexObj> + Send {
[INFO] [stdout] 33 +     fn hello1(&self, mut content: ComplexObj) -> impl futures_util::Future<Output = ComplexObj> + MaybeSend {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `p2`
[INFO] [stdout]   --> tests/duplex.rs:41:30
[INFO] [stdout]    |
[INFO] [stdout] 41 |         fn b(&self, p1: u32, p2: String, p3: bool) -> impl Future<Output = u32> + Send {
[INFO] [stdout]    |                              ^^ help: if this is intentional, prefix it with an underscore: `_p2`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `p3`
[INFO] [stdout]   --> tests/duplex.rs:41:42
[INFO] [stdout]    |
[INFO] [stdout] 41 |         fn b(&self, p1: u32, p2: String, p3: bool) -> impl Future<Output = u32> + Send {
[INFO] [stdout]    |                                          ^^ help: if this is intentional, prefix it with an underscore: `_p3`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0432`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `xy-rpc` (example "unidirectional_rpc_exmaple_caller") due to 2 previous errors
[INFO] [stdout] For more information about this error, try `rustc --explain E0432`.
[INFO] [stdout] 
[INFO] [stdout] error[E0282]: type annotations needed
[INFO] [stdout]    --> tests/duplex.rs:95:29
[INFO] [stdout]     |
[INFO] [stdout]  95 |                       let r = try_join!(
[INFO] [stdout]     |  _____________________________^
[INFO] [stdout]  96 | |                         channel.hello(&1),
[INFO] [stdout]  97 | |                         channel.hello(&2),
[INFO] [stdout]  98 | |                         channel.hello(&3),
[INFO] [stdout]  99 | |                         channel.hello(&4)
[INFO] [stdout] 100 | |                     )?;
[INFO] [stdout]     | |_____________________^ cannot infer type
[INFO] [stdout]     |
[INFO] [stdout]     = note: this error originates in the macro `$crate::try_join` which comes from the expansion of the macro `try_join` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0282]: type annotations needed
[INFO] [stdout]    --> tests/duplex.rs:95:29
[INFO] [stdout]     |
[INFO] [stdout]  95 |                       let r = try_join!(
[INFO] [stdout]     |  _____________________________^
[INFO] [stdout]  96 | |                         channel.hello(&1),
[INFO] [stdout]  97 | |                         channel.hello(&2),
[INFO] [stdout]  98 | |                         channel.hello(&3),
[INFO] [stdout]  99 | |                         channel.hello(&4)
[INFO] [stdout] 100 | |                     )?;
[INFO] [stdout]     | |_____________________^ cannot infer type
[INFO] [stdout]     |
[INFO] [stdout]     = note: this error originates in the macro `$crate::try_join` which comes from the expansion of the macro `try_join` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0282]: type annotations needed
[INFO] [stdout]    --> tests/duplex.rs:95:29
[INFO] [stdout]     |
[INFO] [stdout]  95 |                       let r = try_join!(
[INFO] [stdout]     |  _____________________________^
[INFO] [stdout]  96 | |                         channel.hello(&1),
[INFO] [stdout]  97 | |                         channel.hello(&2),
[INFO] [stdout]  98 | |                         channel.hello(&3),
[INFO] [stdout]  99 | |                         channel.hello(&4)
[INFO] [stdout] 100 | |                     )?;
[INFO] [stdout]     | |_____________________^ cannot infer type
[INFO] [stdout]     |
[INFO] [stdout]     = note: this error originates in the macro `$crate::try_join` which comes from the expansion of the macro `try_join` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0282]: type annotations needed
[INFO] [stdout]    --> tests/duplex.rs:95:29
[INFO] [stdout]     |
[INFO] [stdout]  95 |                       let r = try_join!(
[INFO] [stdout]     |  _____________________________^
[INFO] [stdout]  96 | |                         channel.hello(&1),
[INFO] [stdout]  97 | |                         channel.hello(&2),
[INFO] [stdout]  98 | |                         channel.hello(&3),
[INFO] [stdout]  99 | |                         channel.hello(&4)
[INFO] [stdout] 100 | |                     )?;
[INFO] [stdout]     | |_____________________^ cannot infer type
[INFO] [stdout]     |
[INFO] [stdout]     = note: this error originates in the macro `$crate::try_join` which comes from the expansion of the macro `try_join` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0282]: type annotations needed
[INFO] [stdout]    --> tests/duplex.rs:108:29
[INFO] [stdout]     |
[INFO] [stdout] 108 |                     let r = try_join!(channel.a(&1), channel.a(&2), channel.a(&3), channel.a(&4))?;
[INFO] [stdout]     |                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ cannot infer type
[INFO] [stdout]     |
[INFO] [stdout]     = note: this error originates in the macro `$crate::try_join` which comes from the expansion of the macro `try_join` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0282]: type annotations needed
[INFO] [stdout]    --> tests/duplex.rs:108:29
[INFO] [stdout]     |
[INFO] [stdout] 108 |                     let r = try_join!(channel.a(&1), channel.a(&2), channel.a(&3), channel.a(&4))?;
[INFO] [stdout]     |                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ cannot infer type
[INFO] [stdout]     |
[INFO] [stdout]     = note: this error originates in the macro `$crate::try_join` which comes from the expansion of the macro `try_join` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0282]: type annotations needed
[INFO] [stdout]    --> tests/duplex.rs:108:29
[INFO] [stdout]     |
[INFO] [stdout] 108 |                     let r = try_join!(channel.a(&1), channel.a(&2), channel.a(&3), channel.a(&4))?;
[INFO] [stdout]     |                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ cannot infer type
[INFO] [stdout]     |
[INFO] [stdout]     = note: this error originates in the macro `$crate::try_join` which comes from the expansion of the macro `try_join` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0282]: type annotations needed
[INFO] [stdout]    --> tests/duplex.rs:108:29
[INFO] [stdout]     |
[INFO] [stdout] 108 |                     let r = try_join!(channel.a(&1), channel.a(&2), channel.a(&3), channel.a(&4))?;
[INFO] [stdout]     |                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ cannot infer type
[INFO] [stdout]     |
[INFO] [stdout]     = note: this error originates in the macro `$crate::try_join` which comes from the expansion of the macro `try_join` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `xy-rpc` (example "unidirectional_rpc_exmaple_service") due to 2 previous errors; 1 warning emitted
[INFO] [stdout] For more information about this error, try `rustc --explain E0432`.
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0432`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `xy-rpc` (example "bidirectional_rpc_exmaple_acceptor") due to 2 previous errors
[INFO] [stderr] error: could not compile `xy-rpc` (example "bidirectional_rpc_exmaple_connector") due to 2 previous errors
[INFO] [stdout] For more information about this error, try `rustc --explain E0432`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `xy-rpc` (example "custom_serde_format") due to 1 previous error; 1 warning emitted
[INFO] [stdout] Some errors have detailed explanations: E0282, E0432.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0282`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `xy-rpc` (test "duplex") due to 10 previous errors; 2 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "5cbb6dbc98d9b4c95ded3d3b559b10b48b85cd4e9186f98f57b355721161ce26", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5cbb6dbc98d9b4c95ded3d3b559b10b48b85cd4e9186f98f57b355721161ce26", kill_on_drop: false }`
[INFO] [stdout] 5cbb6dbc98d9b4c95ded3d3b559b10b48b85cd4e9186f98f57b355721161ce26
