[INFO] cloning repository https://github.com/eholk/async-iteration-scratch
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/eholk/async-iteration-scratch" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Feholk%2Fasync-iteration-scratch", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Feholk%2Fasync-iteration-scratch'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] ba3c11d26c6410ad198617a9a600088fc4b7d38b
[INFO] checking eholk/async-iteration-scratch against try#54bb9bb1bbe87f59b5a2e9afea4c8cedcf5e0b47 for pr-153041
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Feholk%2Fasync-iteration-scratch" "/workspace/builds/worker-3-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc2/source'...
[INFO] [stderr] done.
[INFO] removed /workspace/builds/worker-3-tc2/source/rust-toolchain.toml
[INFO] started tweaking git repo https://github.com/eholk/async-iteration-scratch
[INFO] finished tweaking git repo https://github.com/eholk/async-iteration-scratch
[INFO] tweaked toml for git repo https://github.com/eholk/async-iteration-scratch written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/eholk/async-iteration-scratch on toolchain 54bb9bb1bbe87f59b5a2e9afea4c8cedcf5e0b47
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+54bb9bb1bbe87f59b5a2e9afea4c8cedcf5e0b47" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/eholk/async-iteration-scratch 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" "+54bb9bb1bbe87f59b5a2e9afea4c8cedcf5e0b47" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: the cargo feature `edition2024` has been stabilized in the 1.85 release and is no longer necessary to be listed in the manifest
[INFO] [stderr]   See https://doc.rust-lang.org/nightly/cargo/reference/manifest.html#the-edition-field for more information about using this feature.
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:61361fe0aef631f17e9d025a70c5a647956f8c671dd02950a60ad3f5cc5526d7" "/opt/rustwide/cargo-home/bin/cargo" "+54bb9bb1bbe87f59b5a2e9afea4c8cedcf5e0b47" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 020792fb1959408dcc31ec7e061a45c8f0b199681d940db68cd6bee60c1d2ba8
[INFO] running `Command { std: "docker" "start" "-a" "020792fb1959408dcc31ec7e061a45c8f0b199681d940db68cd6bee60c1d2ba8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "020792fb1959408dcc31ec7e061a45c8f0b199681d940db68cd6bee60c1d2ba8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "020792fb1959408dcc31ec7e061a45c8f0b199681d940db68cd6bee60c1d2ba8", kill_on_drop: false }`
[INFO] [stdout] 020792fb1959408dcc31ec7e061a45c8f0b199681d940db68cd6bee60c1d2ba8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:61361fe0aef631f17e9d025a70c5a647956f8c671dd02950a60ad3f5cc5526d7" "/opt/rustwide/cargo-home/bin/cargo" "+54bb9bb1bbe87f59b5a2e9afea4c8cedcf5e0b47" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b272485494618f402c0edf8f543cb1cc3cd594811153d0d3191d5b81b2baa6de
[INFO] running `Command { std: "docker" "start" "-a" "b272485494618f402c0edf8f543cb1cc3cd594811153d0d3191d5b81b2baa6de", kill_on_drop: false }`
[INFO] [stderr] warning: the cargo feature `edition2024` has been stabilized in the 1.85 release and is no longer necessary to be listed in the manifest
[INFO] [stderr]   See https://doc.rust-lang.org/nightly/cargo/reference/manifest.html#the-edition-field for more information about using this feature.
[INFO] [stderr]     Checking async-iteration-scratch v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0658]: `async` trait bounds are unstable
[INFO] [stdout]   --> src/afit/mod.rs:12:45
[INFO] [stdout]    |
[INFO] [stdout] 12 |     async fn for_each(mut self, mut f: impl async FnMut(Self::Item))
[INFO] [stdout]    |                                             ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: see issue #62290 <https://github.com/rust-lang/rust/issues/62290> for more information
[INFO] [stdout]    = help: add `#![feature(async_trait_bounds)]` to the crate attributes to enable
[INFO] [stdout]    = note: this compiler was built on 2026-02-24; consider upgrading it if it is out of date
[INFO] [stdout]    = help: use the desugared name of the async trait, such as `AsyncFn`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: `async` trait bounds are unstable
[INFO] [stdout]  --> src/afit/map.rs:3:36
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub fn map<Iter: AsyncIterator, F: async Fn(Iter::Item) -> U, U>(
[INFO] [stdout]   |                                    ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: see issue #62290 <https://github.com/rust-lang/rust/issues/62290> for more information
[INFO] [stdout]   = help: add `#![feature(async_trait_bounds)]` to the crate attributes to enable
[INFO] [stdout]   = note: this compiler was built on 2026-02-24; consider upgrading it if it is out of date
[INFO] [stdout]   = help: use the desugared name of the async trait, such as `AsyncFn`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: `async` trait bounds are unstable
[INFO] [stdout]   --> src/afit/map.rs:12:8
[INFO] [stdout]    |
[INFO] [stdout] 12 |     F: async Fn(Iter::Item) -> U,
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: see issue #62290 <https://github.com/rust-lang/rust/issues/62290> for more information
[INFO] [stdout]    = help: add `#![feature(async_trait_bounds)]` to the crate attributes to enable
[INFO] [stdout]    = note: this compiler was built on 2026-02-24; consider upgrading it if it is out of date
[INFO] [stdout]    = help: use the desugared name of the async trait, such as `AsyncFn`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: `async` trait bounds are unstable
[INFO] [stdout]   --> src/afit/map.rs:21:8
[INFO] [stdout]    |
[INFO] [stdout] 21 |     F: async Fn(Iter::Item) -> U,
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: see issue #62290 <https://github.com/rust-lang/rust/issues/62290> for more information
[INFO] [stdout]    = help: add `#![feature(async_trait_bounds)]` to the crate attributes to enable
[INFO] [stdout]    = note: this compiler was built on 2026-02-24; consider upgrading it if it is out of date
[INFO] [stdout]    = help: use the desugared name of the async trait, such as `AsyncFn`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: `async` trait bounds are unstable
[INFO] [stdout]   --> src/push/mod.rs:13:33
[INFO] [stdout]    |
[INFO] [stdout] 13 |     async fn exec(self, f: impl async FnMut(Option<Self::Item>) -> ControlFlow<()>);
[INFO] [stdout]    |                                 ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: see issue #62290 <https://github.com/rust-lang/rust/issues/62290> for more information
[INFO] [stdout]    = help: add `#![feature(async_trait_bounds)]` to the crate attributes to enable
[INFO] [stdout]    = note: this compiler was built on 2026-02-24; consider upgrading it if it is out of date
[INFO] [stdout]    = help: use the desugared name of the async trait, such as `AsyncFn`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: `async` trait bounds are unstable
[INFO] [stdout]   --> src/push/mod.rs:15:41
[INFO] [stdout]    |
[INFO] [stdout] 15 |     async fn for_each(self, mut f: impl async FnMut(Self::Item))
[INFO] [stdout]    |                                         ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: see issue #62290 <https://github.com/rust-lang/rust/issues/62290> for more information
[INFO] [stdout]    = help: add `#![feature(async_trait_bounds)]` to the crate attributes to enable
[INFO] [stdout]    = note: this compiler was built on 2026-02-24; consider upgrading it if it is out of date
[INFO] [stdout]    = help: use the desugared name of the async trait, such as `AsyncFn`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: `async` trait bounds are unstable
[INFO] [stdout]   --> src/push/mod.rs:36:41
[INFO] [stdout]    |
[INFO] [stdout] 36 |         async fn exec(self, mut f: impl async FnMut(Option<Self::Item>) -> ControlFlow<()>) {
[INFO] [stdout]    |                                         ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: see issue #62290 <https://github.com/rust-lang/rust/issues/62290> for more information
[INFO] [stdout]    = help: add `#![feature(async_trait_bounds)]` to the crate attributes to enable
[INFO] [stdout]    = note: this compiler was built on 2026-02-24; consider upgrading it if it is out of date
[INFO] [stdout]    = help: use the desugared name of the async trait, such as `AsyncFn`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: `async` trait bounds are unstable
[INFO] [stdout]   --> src/push/mod.rs:64:41
[INFO] [stdout]    |
[INFO] [stdout] 64 |         async fn exec(self, mut f: impl async FnMut(Option<Self::Item>) -> ControlFlow<()>) {
[INFO] [stdout]    |                                         ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: see issue #62290 <https://github.com/rust-lang/rust/issues/62290> for more information
[INFO] [stdout]    = help: add `#![feature(async_trait_bounds)]` to the crate attributes to enable
[INFO] [stdout]    = note: this compiler was built on 2026-02-24; consider upgrading it if it is out of date
[INFO] [stdout]    = help: use the desugared name of the async trait, such as `AsyncFn`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: `async` trait bounds are unstable
[INFO] [stdout]   --> src/push/filter.rs:12:8
[INFO] [stdout]    |
[INFO] [stdout] 12 |     F: async FnMut(&S::Item) -> bool,
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: see issue #62290 <https://github.com/rust-lang/rust/issues/62290> for more information
[INFO] [stdout]    = help: add `#![feature(async_trait_bounds)]` to the crate attributes to enable
[INFO] [stdout]    = note: this compiler was built on 2026-02-24; consider upgrading it if it is out of date
[INFO] [stdout]    = help: use the desugared name of the async trait, such as `AsyncFn`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: `async` trait bounds are unstable
[INFO] [stdout]   --> src/push/filter.rs:21:8
[INFO] [stdout]    |
[INFO] [stdout] 21 |     F: async FnMut(&S::Item) -> bool,
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: see issue #62290 <https://github.com/rust-lang/rust/issues/62290> for more information
[INFO] [stdout]    = help: add `#![feature(async_trait_bounds)]` to the crate attributes to enable
[INFO] [stdout]    = note: this compiler was built on 2026-02-24; consider upgrading it if it is out of date
[INFO] [stdout]    = help: use the desugared name of the async trait, such as `AsyncFn`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: `async` trait bounds are unstable
[INFO] [stdout]   --> src/push/filter.rs:25:41
[INFO] [stdout]    |
[INFO] [stdout] 25 |     async fn exec(mut self, mut f: impl async FnMut(Option<Self::Item>) -> ControlFlow<()>) {
[INFO] [stdout]    |                                         ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: see issue #62290 <https://github.com/rust-lang/rust/issues/62290> for more information
[INFO] [stdout]    = help: add `#![feature(async_trait_bounds)]` to the crate attributes to enable
[INFO] [stdout]    = note: this compiler was built on 2026-02-24; consider upgrading it if it is out of date
[INFO] [stdout]    = help: use the desugared name of the async trait, such as `AsyncFn`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: `async` trait bounds are unstable
[INFO] [stdout]   --> src/push/filter.rs:43:8
[INFO] [stdout]    |
[INFO] [stdout] 43 |     F: async FnMut(&S::Item) -> bool,
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: see issue #62290 <https://github.com/rust-lang/rust/issues/62290> for more information
[INFO] [stdout]    = help: add `#![feature(async_trait_bounds)]` to the crate attributes to enable
[INFO] [stdout]    = note: this compiler was built on 2026-02-24; consider upgrading it if it is out of date
[INFO] [stdout]    = help: use the desugared name of the async trait, such as `AsyncFn`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: `async` trait bounds are unstable
[INFO] [stdout]   --> src/push/merge.rs:18:8
[INFO] [stdout]    |
[INFO] [stdout] 18 |     F: async FnOnce(SendPipe<T>, ReceivePipe<T>) -> U,
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: see issue #62290 <https://github.com/rust-lang/rust/issues/62290> for more information
[INFO] [stdout]    = help: add `#![feature(async_trait_bounds)]` to the crate attributes to enable
[INFO] [stdout]    = note: this compiler was built on 2026-02-24; consider upgrading it if it is out of date
[INFO] [stdout]    = help: use the desugared name of the async trait, such as `AsyncFn`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: `async` trait bounds are unstable
[INFO] [stdout]    --> src/push/merge.rs:103:37
[INFO] [stdout]     |
[INFO] [stdout] 103 |     async fn exec(self, mut f: impl async FnMut(Option<Self::Item>) -> std::ops::ControlFlow<()>) {
[INFO] [stdout]     |                                     ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: see issue #62290 <https://github.com/rust-lang/rust/issues/62290> for more information
[INFO] [stdout]     = help: add `#![feature(async_trait_bounds)]` to the crate attributes to enable
[INFO] [stdout]     = note: this compiler was built on 2026-02-24; consider upgrading it if it is out of date
[INFO] [stdout]     = help: use the desugared name of the async trait, such as `AsyncFn`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `JoinRoot` and `JoinWith`
[INFO] [stdout]   --> src/future_combinators/mod.rs:10:34
[INFO] [stdout]    |
[INFO] [stdout] 10 | pub use join::{join, JoinFuture, JoinRoot, JoinWith};
[INFO] [stdout]    |                                  ^^^^^^^^  ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: `async` trait bounds are unstable
[INFO] [stdout]   --> src/afit/mod.rs:12:45
[INFO] [stdout]    |
[INFO] [stdout] 12 |     async fn for_each(mut self, mut f: impl async FnMut(Self::Item))
[INFO] [stdout]    |                                             ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: see issue #62290 <https://github.com/rust-lang/rust/issues/62290> for more information
[INFO] [stdout]    = help: add `#![feature(async_trait_bounds)]` to the crate attributes to enable
[INFO] [stdout]    = note: this compiler was built on 2026-02-24; consider upgrading it if it is out of date
[INFO] [stdout]    = help: use the desugared name of the async trait, such as `AsyncFn`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: `async` trait bounds are unstable
[INFO] [stdout]  --> src/afit/map.rs:3:36
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub fn map<Iter: AsyncIterator, F: async Fn(Iter::Item) -> U, U>(
[INFO] [stdout]   |                                    ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: see issue #62290 <https://github.com/rust-lang/rust/issues/62290> for more information
[INFO] [stdout]   = help: add `#![feature(async_trait_bounds)]` to the crate attributes to enable
[INFO] [stdout]   = note: this compiler was built on 2026-02-24; consider upgrading it if it is out of date
[INFO] [stdout]   = help: use the desugared name of the async trait, such as `AsyncFn`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: `async` trait bounds are unstable
[INFO] [stdout]   --> src/afit/map.rs:12:8
[INFO] [stdout]    |
[INFO] [stdout] 12 |     F: async Fn(Iter::Item) -> U,
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: see issue #62290 <https://github.com/rust-lang/rust/issues/62290> for more information
[INFO] [stdout]    = help: add `#![feature(async_trait_bounds)]` to the crate attributes to enable
[INFO] [stdout]    = note: this compiler was built on 2026-02-24; consider upgrading it if it is out of date
[INFO] [stdout]    = help: use the desugared name of the async trait, such as `AsyncFn`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: `async` trait bounds are unstable
[INFO] [stdout]   --> src/afit/map.rs:21:8
[INFO] [stdout]    |
[INFO] [stdout] 21 |     F: async Fn(Iter::Item) -> U,
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: see issue #62290 <https://github.com/rust-lang/rust/issues/62290> for more information
[INFO] [stdout]    = help: add `#![feature(async_trait_bounds)]` to the crate attributes to enable
[INFO] [stdout]    = note: this compiler was built on 2026-02-24; consider upgrading it if it is out of date
[INFO] [stdout]    = help: use the desugared name of the async trait, such as `AsyncFn`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: `async` trait bounds are unstable
[INFO] [stdout]   --> src/push/mod.rs:13:33
[INFO] [stdout]    |
[INFO] [stdout] 13 |     async fn exec(self, f: impl async FnMut(Option<Self::Item>) -> ControlFlow<()>);
[INFO] [stdout]    |                                 ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: see issue #62290 <https://github.com/rust-lang/rust/issues/62290> for more information
[INFO] [stdout]    = help: add `#![feature(async_trait_bounds)]` to the crate attributes to enable
[INFO] [stdout]    = note: this compiler was built on 2026-02-24; consider upgrading it if it is out of date
[INFO] [stdout]    = help: use the desugared name of the async trait, such as `AsyncFn`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: `async` trait bounds are unstable
[INFO] [stdout]   --> src/push/mod.rs:15:41
[INFO] [stdout]    |
[INFO] [stdout] 15 |     async fn for_each(self, mut f: impl async FnMut(Self::Item))
[INFO] [stdout]    |                                         ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: see issue #62290 <https://github.com/rust-lang/rust/issues/62290> for more information
[INFO] [stdout]    = help: add `#![feature(async_trait_bounds)]` to the crate attributes to enable
[INFO] [stdout]    = note: this compiler was built on 2026-02-24; consider upgrading it if it is out of date
[INFO] [stdout]    = help: use the desugared name of the async trait, such as `AsyncFn`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: `async` trait bounds are unstable
[INFO] [stdout]   --> src/push/mod.rs:36:41
[INFO] [stdout]    |
[INFO] [stdout] 36 |         async fn exec(self, mut f: impl async FnMut(Option<Self::Item>) -> ControlFlow<()>) {
[INFO] [stdout]    |                                         ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: see issue #62290 <https://github.com/rust-lang/rust/issues/62290> for more information
[INFO] [stdout]    = help: add `#![feature(async_trait_bounds)]` to the crate attributes to enable
[INFO] [stdout]    = note: this compiler was built on 2026-02-24; consider upgrading it if it is out of date
[INFO] [stdout]    = help: use the desugared name of the async trait, such as `AsyncFn`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: `async` trait bounds are unstable
[INFO] [stdout]   --> src/push/mod.rs:64:41
[INFO] [stdout]    |
[INFO] [stdout] 64 |         async fn exec(self, mut f: impl async FnMut(Option<Self::Item>) -> ControlFlow<()>) {
[INFO] [stdout]    |                                         ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: see issue #62290 <https://github.com/rust-lang/rust/issues/62290> for more information
[INFO] [stdout]    = help: add `#![feature(async_trait_bounds)]` to the crate attributes to enable
[INFO] [stdout]    = note: this compiler was built on 2026-02-24; consider upgrading it if it is out of date
[INFO] [stdout]    = help: use the desugared name of the async trait, such as `AsyncFn`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: `async` trait bounds are unstable
[INFO] [stdout]   --> src/push/filter.rs:12:8
[INFO] [stdout]    |
[INFO] [stdout] 12 |     F: async FnMut(&S::Item) -> bool,
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: see issue #62290 <https://github.com/rust-lang/rust/issues/62290> for more information
[INFO] [stdout]    = help: add `#![feature(async_trait_bounds)]` to the crate attributes to enable
[INFO] [stdout]    = note: this compiler was built on 2026-02-24; consider upgrading it if it is out of date
[INFO] [stdout]    = help: use the desugared name of the async trait, such as `AsyncFn`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: `async` trait bounds are unstable
[INFO] [stdout]   --> src/push/filter.rs:21:8
[INFO] [stdout]    |
[INFO] [stdout] 21 |     F: async FnMut(&S::Item) -> bool,
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: see issue #62290 <https://github.com/rust-lang/rust/issues/62290> for more information
[INFO] [stdout]    = help: add `#![feature(async_trait_bounds)]` to the crate attributes to enable
[INFO] [stdout]    = note: this compiler was built on 2026-02-24; consider upgrading it if it is out of date
[INFO] [stdout]    = help: use the desugared name of the async trait, such as `AsyncFn`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: `async` trait bounds are unstable
[INFO] [stdout]   --> src/push/filter.rs:25:41
[INFO] [stdout]    |
[INFO] [stdout] 25 |     async fn exec(mut self, mut f: impl async FnMut(Option<Self::Item>) -> ControlFlow<()>) {
[INFO] [stdout]    |                                         ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: see issue #62290 <https://github.com/rust-lang/rust/issues/62290> for more information
[INFO] [stdout]    = help: add `#![feature(async_trait_bounds)]` to the crate attributes to enable
[INFO] [stdout]    = note: this compiler was built on 2026-02-24; consider upgrading it if it is out of date
[INFO] [stdout]    = help: use the desugared name of the async trait, such as `AsyncFn`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: `async` trait bounds are unstable
[INFO] [stdout]   --> src/push/filter.rs:43:8
[INFO] [stdout]    |
[INFO] [stdout] 43 |     F: async FnMut(&S::Item) -> bool,
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: see issue #62290 <https://github.com/rust-lang/rust/issues/62290> for more information
[INFO] [stdout]    = help: add `#![feature(async_trait_bounds)]` to the crate attributes to enable
[INFO] [stdout]    = note: this compiler was built on 2026-02-24; consider upgrading it if it is out of date
[INFO] [stdout]    = help: use the desugared name of the async trait, such as `AsyncFn`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: `async` trait bounds are unstable
[INFO] [stdout]   --> src/push/merge.rs:18:8
[INFO] [stdout]    |
[INFO] [stdout] 18 |     F: async FnOnce(SendPipe<T>, ReceivePipe<T>) -> U,
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: see issue #62290 <https://github.com/rust-lang/rust/issues/62290> for more information
[INFO] [stdout]    = help: add `#![feature(async_trait_bounds)]` to the crate attributes to enable
[INFO] [stdout]    = note: this compiler was built on 2026-02-24; consider upgrading it if it is out of date
[INFO] [stdout]    = help: use the desugared name of the async trait, such as `AsyncFn`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: `async` trait bounds are unstable
[INFO] [stdout]    --> src/push/merge.rs:103:37
[INFO] [stdout]     |
[INFO] [stdout] 103 |     async fn exec(self, mut f: impl async FnMut(Option<Self::Item>) -> std::ops::ControlFlow<()>) {
[INFO] [stdout]     |                                     ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: see issue #62290 <https://github.com/rust-lang/rust/issues/62290> for more information
[INFO] [stdout]     = help: add `#![feature(async_trait_bounds)]` to the crate attributes to enable
[INFO] [stdout]     = note: this compiler was built on 2026-02-24; consider upgrading it if it is out of date
[INFO] [stdout]     = help: use the desugared name of the async trait, such as `AsyncFn`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `JoinRoot` and `JoinWith`
[INFO] [stdout]   --> src/future_combinators/mod.rs:10:34
[INFO] [stdout]    |
[INFO] [stdout] 10 | pub use join::{join, JoinFuture, JoinRoot, JoinWith};
[INFO] [stdout]    |                                  ^^^^^^^^  ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `async_closure` has been stable since 1.85.0 and no longer requires an attribute to enable
[INFO] [stdout]   --> src/lib.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 12 |     async_closure,
[INFO] [stdout]    |     ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(stable_features)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `noop_waker` has been stable since 1.85.0 and no longer requires an attribute to enable
[INFO] [stdout]  --> src/lib.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 |     noop_waker,
[INFO] [stdout]   |     ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `async_closure` has been stable since 1.85.0 and no longer requires an attribute to enable
[INFO] [stdout]   --> src/lib.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 12 |     async_closure,
[INFO] [stdout]    |     ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(stable_features)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `noop_waker` has been stable since 1.85.0 and no longer requires an attribute to enable
[INFO] [stdout]  --> src/lib.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 |     noop_waker,
[INFO] [stdout]   |     ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0658`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `async-iteration-scratch` (lib) due to 14 previous errors; 3 warnings emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] For more information about this error, try `rustc --explain E0658`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `async-iteration-scratch` (lib test) due to 14 previous errors; 3 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "b272485494618f402c0edf8f543cb1cc3cd594811153d0d3191d5b81b2baa6de", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b272485494618f402c0edf8f543cb1cc3cd594811153d0d3191d5b81b2baa6de", kill_on_drop: false }`
[INFO] [stdout] b272485494618f402c0edf8f543cb1cc3cd594811153d0d3191d5b81b2baa6de
