[INFO] cloning repository https://github.com/jihiggins/lending-stream
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/jihiggins/lending-stream" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjihiggins%2Flending-stream", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjihiggins%2Flending-stream'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 564b516fff03b50f5bbb1f49490833d82437e1ac
[INFO] checking jihiggins/lending-stream against try#c9557a20e5ef2e0e02c29a5fafd850d1b7cf1e4f for pr-133502-21
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjihiggins%2Flending-stream" "/workspace/builds/worker-7-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/jihiggins/lending-stream
[INFO] finished tweaking git repo https://github.com/jihiggins/lending-stream
[INFO] tweaked toml for git repo https://github.com/jihiggins/lending-stream written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/jihiggins/lending-stream on toolchain c9557a20e5ef2e0e02c29a5fafd850d1b7cf1e4f
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c9557a20e5ef2e0e02c29a5fafd850d1b7cf1e4f" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/jihiggins/lending-stream 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" "+c9557a20e5ef2e0e02c29a5fafd850d1b7cf1e4f" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:29356a839a4d14451438f794ce8414e707d72405f44418718d724d22562fe786" "/opt/rustwide/cargo-home/bin/cargo" "+c9557a20e5ef2e0e02c29a5fafd850d1b7cf1e4f" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0b5e794803a8e2fb9d611d82f1b99eb90814bbce499af749b8f8986b238c0305
[INFO] running `Command { std: "docker" "start" "-a" "0b5e794803a8e2fb9d611d82f1b99eb90814bbce499af749b8f8986b238c0305", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0b5e794803a8e2fb9d611d82f1b99eb90814bbce499af749b8f8986b238c0305", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0b5e794803a8e2fb9d611d82f1b99eb90814bbce499af749b8f8986b238c0305", kill_on_drop: false }`
[INFO] [stdout] 0b5e794803a8e2fb9d611d82f1b99eb90814bbce499af749b8f8986b238c0305
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:29356a839a4d14451438f794ce8414e707d72405f44418718d724d22562fe786" "/opt/rustwide/cargo-home/bin/cargo" "+c9557a20e5ef2e0e02c29a5fafd850d1b7cf1e4f" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 78653ff7b327dc1429b8711d02caba11abb62a8e714f8dbbce0cad0c7668e97e
[INFO] running `Command { std: "docker" "start" "-a" "78653ff7b327dc1429b8711d02caba11abb62a8e714f8dbbce0cad0c7668e97e", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.66
[INFO] [stderr]    Compiling unicode-ident v1.0.11
[INFO] [stderr]    Compiling futures-core v0.3.28
[INFO] [stderr]    Compiling autocfg v1.1.0
[INFO] [stderr]    Compiling futures-channel v0.3.28
[INFO] [stderr]    Compiling futures-task v0.3.28
[INFO] [stderr]    Compiling memchr v2.5.0
[INFO] [stderr]     Checking futures-sink v0.3.28
[INFO] [stderr]    Compiling futures-util v0.3.28
[INFO] [stderr]     Checking pin-project-lite v0.2.9
[INFO] [stderr]     Checking futures-io v0.3.28
[INFO] [stderr]    Compiling slab v0.4.8
[INFO] [stderr]    Compiling quote v1.0.32
[INFO] [stderr]    Compiling syn v2.0.28
[INFO] [stderr]    Compiling futures-macro v0.3.28
[INFO] [stderr]     Checking futures-executor v0.3.28
[INFO] [stderr]     Checking futures v0.3.28
[INFO] [stderr]     Checking lending-stream v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the feature `async_fn_in_trait` has been stable since 1.75.0 and no longer requires an attribute to enable
[INFO] [stdout]  --> src/lib.rs:3:12
[INFO] [stdout]   |
[INFO] [stdout] 3 | #![feature(async_fn_in_trait)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(stable_features)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0283]: type annotations needed: cannot satisfy `U: LendingStream`
[INFO] [stdout]    --> src/lending_stream_ext.rs:555:27
[INFO] [stdout]     |
[INFO] [stdout] 555 |     type NextFuture<'a> = impl Future<Output=Option<Self::Item<'a>>> where S: 'a, S::Item<'a>: 'a, Self: 'a;
[INFO] [stdout]     |                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] note: multiple `impl`s or `where` clauses satisfying `U: LendingStream` found
[INFO] [stdout]    --> src/lending_stream_ext.rs:550:8
[INFO] [stdout]     |
[INFO] [stdout] 550 |     U: LendingStream + Unpin,
[INFO] [stdout]     |        ^^^^^^^^^^^^^
[INFO] [stdout] 551 |     for<'a> S::Item<'a>: LendingStream + Unpin,
[INFO] [stdout]     |                          ^^^^^^^^^^^^^
[INFO] [stdout] note: required for `lending_stream_ext::Flatten<S, U>` to implement `LendingStream`
[INFO] [stdout]    --> src/lending_stream_ext.rs:548:12
[INFO] [stdout]     |
[INFO] [stdout] 548 | impl<S, U> LendingStream for Flatten<S, U>
[INFO] [stdout]     |            ^^^^^^^^^^^^^     ^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 551 |     for<'a> S::Item<'a>: LendingStream + Unpin,
[INFO] [stdout]     |                          ------------- unsatisfied trait bound introduced here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0283]: type annotations needed: cannot satisfy `U: LendingStream`
[INFO] [stdout]    --> src/lending_stream_ext.rs:548:30
[INFO] [stdout]     |
[INFO] [stdout] 548 | impl<S, U> LendingStream for Flatten<S, U>
[INFO] [stdout]     |                              ^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] note: multiple `impl`s or `where` clauses satisfying `U: LendingStream` found
[INFO] [stdout]    --> src/lending_stream_ext.rs:550:8
[INFO] [stdout]     |
[INFO] [stdout] 550 |     U: LendingStream + Unpin,
[INFO] [stdout]     |        ^^^^^^^^^^^^^
[INFO] [stdout] 551 |     for<'a> S::Item<'a>: LendingStream + Unpin,
[INFO] [stdout]     |                          ^^^^^^^^^^^^^
[INFO] [stdout] note: required for `lending_stream_ext::Flatten<S, U>` to implement `LendingStream`
[INFO] [stdout]    --> src/lending_stream_ext.rs:548:12
[INFO] [stdout]     |
[INFO] [stdout] 548 | impl<S, U> LendingStream for Flatten<S, U>
[INFO] [stdout]     |            ^^^^^^^^^^^^^     ^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 551 |     for<'a> S::Item<'a>: LendingStream + Unpin,
[INFO] [stdout]     |                          ------------- unsatisfied trait bound introduced here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `async_fn_in_trait` has been stable since 1.75.0 and no longer requires an attribute to enable
[INFO] [stdout]  --> src/lib.rs:3:12
[INFO] [stdout]   |
[INFO] [stdout] 3 | #![feature(async_fn_in_trait)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(stable_features)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0283]: type annotations needed: cannot satisfy `U: LendingStream`
[INFO] [stdout]    --> src/lending_stream_ext.rs:555:5
[INFO] [stdout]     |
[INFO] [stdout] 555 |     type NextFuture<'a> = impl Future<Output=Option<Self::Item<'a>>> where S: 'a, S::Item<'a>: 'a, Self: 'a;
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] note: multiple `impl`s or `where` clauses satisfying `U: LendingStream` found
[INFO] [stdout]    --> src/lending_stream_ext.rs:550:8
[INFO] [stdout]     |
[INFO] [stdout] 550 |     U: LendingStream + Unpin,
[INFO] [stdout]     |        ^^^^^^^^^^^^^
[INFO] [stdout] 551 |     for<'a> S::Item<'a>: LendingStream + Unpin,
[INFO] [stdout]     |                          ^^^^^^^^^^^^^
[INFO] [stdout] note: required by a bound in `<lending_stream_ext::Flatten<S, U> as LendingStream>`
[INFO] [stdout]    --> src/lending_stream_ext.rs:551:26
[INFO] [stdout]     |
[INFO] [stdout] 551 |     for<'a> S::Item<'a>: LendingStream + Unpin,
[INFO] [stdout]     |                          ^^^^^^^^^^^^^ required by this bound in `<Flatten<S, U> as LendingStream>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0283]: type annotations needed: cannot satisfy `U: LendingStream`
[INFO] [stdout]    --> src/lending_stream_ext.rs:557:34
[INFO] [stdout]     |
[INFO] [stdout] 557 |     fn next<'a>(&'a mut self) -> Self::NextFuture<'a>
[INFO] [stdout]     |                                  ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] note: multiple `impl`s or `where` clauses satisfying `U: LendingStream` found
[INFO] [stdout]    --> src/lending_stream_ext.rs:550:8
[INFO] [stdout]     |
[INFO] [stdout] 550 |     U: LendingStream + Unpin,
[INFO] [stdout]     |        ^^^^^^^^^^^^^
[INFO] [stdout] 551 |     for<'a> S::Item<'a>: LendingStream + Unpin,
[INFO] [stdout]     |                          ^^^^^^^^^^^^^
[INFO] [stdout] note: required for `lending_stream_ext::Flatten<S, U>` to implement `LendingStream`
[INFO] [stdout]    --> src/lending_stream_ext.rs:548:12
[INFO] [stdout]     |
[INFO] [stdout] 548 | impl<S, U> LendingStream for Flatten<S, U>
[INFO] [stdout]     |            ^^^^^^^^^^^^^     ^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 551 |     for<'a> S::Item<'a>: LendingStream + Unpin,
[INFO] [stdout]     |                          ------------- unsatisfied trait bound introduced here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0283]: type annotations needed: cannot satisfy `U: LendingStream`
[INFO] [stdout]    --> src/lending_stream_ext.rs:555:27
[INFO] [stdout]     |
[INFO] [stdout] 555 |     type NextFuture<'a> = impl Future<Output=Option<Self::Item<'a>>> where S: 'a, S::Item<'a>: 'a, Self: 'a;
[INFO] [stdout]     |                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] note: multiple `impl`s or `where` clauses satisfying `U: LendingStream` found
[INFO] [stdout]    --> src/lending_stream_ext.rs:550:8
[INFO] [stdout]     |
[INFO] [stdout] 550 |     U: LendingStream + Unpin,
[INFO] [stdout]     |        ^^^^^^^^^^^^^
[INFO] [stdout] 551 |     for<'a> S::Item<'a>: LendingStream + Unpin,
[INFO] [stdout]     |                          ^^^^^^^^^^^^^
[INFO] [stdout] note: required for `lending_stream_ext::Flatten<S, U>` to implement `LendingStream`
[INFO] [stdout]    --> src/lending_stream_ext.rs:548:12
[INFO] [stdout]     |
[INFO] [stdout] 548 | impl<S, U> LendingStream for Flatten<S, U>
[INFO] [stdout]     |            ^^^^^^^^^^^^^     ^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 551 |     for<'a> S::Item<'a>: LendingStream + Unpin,
[INFO] [stdout]     |                          ------------- unsatisfied trait bound introduced here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0283]: type annotations needed: cannot satisfy `U: LendingStream`
[INFO] [stdout]    --> src/lending_stream_ext.rs:548:30
[INFO] [stdout]     |
[INFO] [stdout] 548 | impl<S, U> LendingStream for Flatten<S, U>
[INFO] [stdout]     |                              ^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] note: multiple `impl`s or `where` clauses satisfying `U: LendingStream` found
[INFO] [stdout]    --> src/lending_stream_ext.rs:550:8
[INFO] [stdout]     |
[INFO] [stdout] 550 |     U: LendingStream + Unpin,
[INFO] [stdout]     |        ^^^^^^^^^^^^^
[INFO] [stdout] 551 |     for<'a> S::Item<'a>: LendingStream + Unpin,
[INFO] [stdout]     |                          ^^^^^^^^^^^^^
[INFO] [stdout] note: required for `lending_stream_ext::Flatten<S, U>` to implement `LendingStream`
[INFO] [stdout]    --> src/lending_stream_ext.rs:548:12
[INFO] [stdout]     |
[INFO] [stdout] 548 | impl<S, U> LendingStream for Flatten<S, U>
[INFO] [stdout]     |            ^^^^^^^^^^^^^     ^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 551 |     for<'a> S::Item<'a>: LendingStream + Unpin,
[INFO] [stdout]     |                          ------------- unsatisfied trait bound introduced here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0283]: type annotations needed: cannot satisfy `U: LendingStream`
[INFO] [stdout]    --> src/lending_stream_ext.rs:555:5
[INFO] [stdout]     |
[INFO] [stdout] 555 |     type NextFuture<'a> = impl Future<Output=Option<Self::Item<'a>>> where S: 'a, S::Item<'a>: 'a, Self: 'a;
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] note: multiple `impl`s or `where` clauses satisfying `U: LendingStream` found
[INFO] [stdout]    --> src/lending_stream_ext.rs:550:8
[INFO] [stdout]     |
[INFO] [stdout] 550 |     U: LendingStream + Unpin,
[INFO] [stdout]     |        ^^^^^^^^^^^^^
[INFO] [stdout] 551 |     for<'a> S::Item<'a>: LendingStream + Unpin,
[INFO] [stdout]     |                          ^^^^^^^^^^^^^
[INFO] [stdout] note: required by a bound in `<lending_stream_ext::Flatten<S, U> as LendingStream>`
[INFO] [stdout]    --> src/lending_stream_ext.rs:551:26
[INFO] [stdout]     |
[INFO] [stdout] 551 |     for<'a> S::Item<'a>: LendingStream + Unpin,
[INFO] [stdout]     |                          ^^^^^^^^^^^^^ required by this bound in `<Flatten<S, U> as LendingStream>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0283]: type annotations needed: cannot satisfy `U: LendingStream`
[INFO] [stdout]    --> src/lending_stream_ext.rs:557:34
[INFO] [stdout]     |
[INFO] [stdout] 557 |     fn next<'a>(&'a mut self) -> Self::NextFuture<'a>
[INFO] [stdout]     |                                  ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] note: multiple `impl`s or `where` clauses satisfying `U: LendingStream` found
[INFO] [stdout]    --> src/lending_stream_ext.rs:550:8
[INFO] [stdout]     |
[INFO] [stdout] 550 |     U: LendingStream + Unpin,
[INFO] [stdout]     |        ^^^^^^^^^^^^^
[INFO] [stdout] 551 |     for<'a> S::Item<'a>: LendingStream + Unpin,
[INFO] [stdout]     |                          ^^^^^^^^^^^^^
[INFO] [stdout] note: required for `lending_stream_ext::Flatten<S, U>` to implement `LendingStream`
[INFO] [stdout]    --> src/lending_stream_ext.rs:548:12
[INFO] [stdout]     |
[INFO] [stdout] 548 | impl<S, U> LendingStream for Flatten<S, U>
[INFO] [stdout]     |            ^^^^^^^^^^^^^     ^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 551 |     for<'a> S::Item<'a>: LendingStream + Unpin,
[INFO] [stdout]     |                          ------------- unsatisfied trait bound introduced here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0283]: type annotations needed: cannot satisfy `U: LendingStream`
[INFO] [stdout]    --> src/lending_stream_ext.rs:557:5
[INFO] [stdout]     |
[INFO] [stdout] 557 | /     fn next<'a>(&'a mut self) -> Self::NextFuture<'a>
[INFO] [stdout] 558 | |     where
[INFO] [stdout] 559 | |         Self: 'a,
[INFO] [stdout] 560 | |         Self: Unpin,
[INFO] [stdout]     | |____________________^
[INFO] [stdout]     |
[INFO] [stdout] note: multiple `impl`s or `where` clauses satisfying `U: LendingStream` found
[INFO] [stdout]    --> src/lending_stream_ext.rs:550:8
[INFO] [stdout]     |
[INFO] [stdout] 550 |     U: LendingStream + Unpin,
[INFO] [stdout]     |        ^^^^^^^^^^^^^
[INFO] [stdout] 551 |     for<'a> S::Item<'a>: LendingStream + Unpin,
[INFO] [stdout]     |                          ^^^^^^^^^^^^^
[INFO] [stdout] note: required for `lending_stream_ext::Flatten<S, U>` to implement `LendingStream`
[INFO] [stdout]    --> src/lending_stream_ext.rs:548:12
[INFO] [stdout]     |
[INFO] [stdout] 548 | impl<S, U> LendingStream for Flatten<S, U>
[INFO] [stdout]     |            ^^^^^^^^^^^^^     ^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 551 |     for<'a> S::Item<'a>: LendingStream + Unpin,
[INFO] [stdout]     |                          ------------- unsatisfied trait bound introduced here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0283`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `lending-stream` (lib test) due to 5 previous errors; 1 warning emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error[E0283]: type annotations needed: cannot satisfy `U: LendingStream`
[INFO] [stdout]    --> src/lending_stream_ext.rs:557:5
[INFO] [stdout]     |
[INFO] [stdout] 557 | /     fn next<'a>(&'a mut self) -> Self::NextFuture<'a>
[INFO] [stdout] 558 | |     where
[INFO] [stdout] 559 | |         Self: 'a,
[INFO] [stdout] 560 | |         Self: Unpin,
[INFO] [stdout]     | |____________________^
[INFO] [stdout]     |
[INFO] [stdout] note: multiple `impl`s or `where` clauses satisfying `U: LendingStream` found
[INFO] [stdout]    --> src/lending_stream_ext.rs:550:8
[INFO] [stdout]     |
[INFO] [stdout] 550 |     U: LendingStream + Unpin,
[INFO] [stdout]     |        ^^^^^^^^^^^^^
[INFO] [stdout] 551 |     for<'a> S::Item<'a>: LendingStream + Unpin,
[INFO] [stdout]     |                          ^^^^^^^^^^^^^
[INFO] [stdout] note: required for `lending_stream_ext::Flatten<S, U>` to implement `LendingStream`
[INFO] [stdout]    --> src/lending_stream_ext.rs:548:12
[INFO] [stdout]     |
[INFO] [stdout] 548 | impl<S, U> LendingStream for Flatten<S, U>
[INFO] [stdout]     |            ^^^^^^^^^^^^^     ^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 551 |     for<'a> S::Item<'a>: LendingStream + Unpin,
[INFO] [stdout]     |                          ------------- unsatisfied trait bound introduced here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0283`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `lending-stream` (lib) due to 5 previous errors; 1 warning emitted
[INFO] running `Command { std: "docker" "inspect" "78653ff7b327dc1429b8711d02caba11abb62a8e714f8dbbce0cad0c7668e97e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "78653ff7b327dc1429b8711d02caba11abb62a8e714f8dbbce0cad0c7668e97e", kill_on_drop: false }`
[INFO] [stdout] 78653ff7b327dc1429b8711d02caba11abb62a8e714f8dbbce0cad0c7668e97e
