[INFO] fetching crate futures 0.3.8...
[INFO] checking futures-0.3.8 against master#39b841dfe36f90a7cd111e7f0c55f32594f6e578 for pr-77035
[INFO] extracting crate futures 0.3.8 into /workspace/builds/worker-8/source
[INFO] validating manifest of crates.io crate futures 0.3.8 on toolchain 39b841dfe36f90a7cd111e7f0c55f32594f6e578
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+39b841dfe36f90a7cd111e7f0c55f32594f6e578" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate futures 0.3.8
[INFO] finished tweaking crates.io crate futures 0.3.8
[INFO] tweaked toml for crates.io crate futures 0.3.8 written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+39b841dfe36f90a7cd111e7f0c55f32594f6e578" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+39b841dfe36f90a7cd111e7f0c55f32594f6e578" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "rustops/crates-build-env@sha256:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+39b841dfe36f90a7cd111e7f0c55f32594f6e578" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 7f60d87209713432d465848ddf5967321579611dff9b72b79718c25ffaaf1c12
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "7f60d87209713432d465848ddf5967321579611dff9b72b79718c25ffaaf1c12", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7f60d87209713432d465848ddf5967321579611dff9b72b79718c25ffaaf1c12", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7f60d87209713432d465848ddf5967321579611dff9b72b79718c25ffaaf1c12", kill_on_drop: false }`
[INFO] [stdout] 7f60d87209713432d465848ddf5967321579611dff9b72b79718c25ffaaf1c12
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+39b841dfe36f90a7cd111e7f0c55f32594f6e578" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3c466373c492222440a5b1fa6f86e9a554fbc39365281ce6a9dc791d30abd667
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "3c466373c492222440a5b1fa6f86e9a554fbc39365281ce6a9dc791d30abd667", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.24
[INFO] [stderr]    Compiling quote v1.0.7
[INFO] [stderr]    Compiling syn v1.0.54
[INFO] [stderr]    Compiling pin-project-internal v1.0.2
[INFO] [stderr]    Compiling futures-macro v0.3.8
[INFO] [stderr]     Checking pin-project v1.0.2
[INFO] [stderr]     Checking futures-util v0.3.8
[INFO] [stderr]     Checking futures-executor v0.3.8
[INFO] [stderr]     Checking futures v0.3.8 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared crate or module `futures_test`
[INFO] [stdout]  --> tests/eager_drop.rs:4:9
[INFO] [stdout]   |
[INFO] [stdout] 4 |     use futures_test::future::FutureTestExt;
[INFO] [stdout]   |         ^^^^^^^^^^^^ use of undeclared crate or module `futures_test`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared crate or module `futures_test`
[INFO] [stdout]   --> tests/eager_drop.rs:26:9
[INFO] [stdout]    |
[INFO] [stdout] 26 |     use futures_test::future::FutureTestExt;
[INFO] [stdout]    |         ^^^^^^^^^^^^ use of undeclared crate or module `futures_test`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared crate or module `futures_test`
[INFO] [stdout]   --> tests/eager_drop.rs:70:13
[INFO] [stdout]    |
[INFO] [stdout] 70 |         use futures_test::future::FutureTestExt;
[INFO] [stdout]    |             ^^^^^^^^^^^^ use of undeclared crate or module `futures_test`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared crate or module `futures_test`
[INFO] [stdout]   --> tests/eager_drop.rs:94:13
[INFO] [stdout]    |
[INFO] [stdout] 94 |         use futures_test::future::FutureTestExt;
[INFO] [stdout]    |             ^^^^^^^^^^^^ use of undeclared crate or module `futures_test`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared crate or module `futures_test`
[INFO] [stdout]    --> tests/eager_drop.rs:118:13
[INFO] [stdout]     |
[INFO] [stdout] 118 |         use futures_test::future::FutureTestExt;
[INFO] [stdout]     |             ^^^^^^^^^^^^ use of undeclared crate or module `futures_test`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0432]: unresolved import `pin_project`
[INFO] [stdout]   --> tests/eager_drop.rs:48:9
[INFO] [stdout]    |
[INFO] [stdout] 48 |     use pin_project::pin_project;
[INFO] [stdout]    |         ^^^^^^^^^^^ use of undeclared crate or module `pin_project`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot determine resolution for the attribute macro `pin_project`
[INFO] [stdout]   --> tests/eager_drop.rs:51:7
[INFO] [stdout]    |
[INFO] [stdout] 51 |     #[pin_project]
[INFO] [stdout]    |       ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: import resolution is stuck, try simplifying macro imports
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot find attribute `pin` in this scope
[INFO] [stdout]   --> tests/eager_drop.rs:54:11
[INFO] [stdout]    |
[INFO] [stdout] 54 |         #[pin]
[INFO] [stdout]    |           ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared crate or module `futures_test`
[INFO] [stdout]  --> tests/try_stream.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use futures_test::task::noop_context;
[INFO] [stdout]   |     ^^^^^^^^^^^^ use of undeclared crate or module `futures_test`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `run_in_background` found for struct `futures::future::Map<futures::future::MapOk<futures::future::Ready<std::result::Result<i32, i32>>, [closure@tests/eager_drop.rs:13:17: 13:71]>, [closure@tests/eager_drop.rs:14:14: 17:10]>` in the current scope
[INFO] [stdout]   --> tests/eager_drop.rs:18:10
[INFO] [stdout]    |
[INFO] [stdout] 18 |         .run_in_background();
[INFO] [stdout]    |          ^^^^^^^^^^^^^^^^^ method not found in `futures::future::Map<futures::future::MapOk<futures::future::Ready<std::result::Result<i32, i32>>, [closure@tests/eager_drop.rs:13:17: 13:71]>, [closure@tests/eager_drop.rs:14:14: 17:10]>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `run_in_background` found for struct `futures::future::Map<futures::future::MapErr<futures::future::Ready<std::result::Result<i32, i32>>, [closure@tests/eager_drop.rs:35:18: 35:72]>, [closure@tests/eager_drop.rs:36:14: 39:10]>` in the current scope
[INFO] [stdout]   --> tests/eager_drop.rs:40:10
[INFO] [stdout]    |
[INFO] [stdout] 40 |         .run_in_background();
[INFO] [stdout]    |          ^^^^^^^^^^^^^^^^^ method not found in `futures::future::Map<futures::future::MapErr<futures::future::Ready<std::result::Result<i32, i32>>, [closure@tests/eager_drop.rs:35:18: 35:72]>, [closure@tests/eager_drop.rs:36:14: 39:10]>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `project` found for struct `Pin<&mut FutureData<F, T>>` in the current scope
[INFO] [stdout]   --> tests/eager_drop.rs:62:18
[INFO] [stdout]    |
[INFO] [stdout] 62 |             self.project().future.poll(cx)
[INFO] [stdout]    |                  ^^^^^^^ method not found in `Pin<&mut FutureData<F, T>>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `run_in_background` found for struct `futures::future::Then<FutureData<UnwrapOrElse<futures::channel::oneshot::Receiver<()>, [closure@tests/eager_drop.rs:77:61: 77:77]>, std::sync::mpsc::Sender<()>>, futures::future::Ready<()>, [closure@tests/eager_drop.rs:78:19: 82:14]>` in the current scope
[INFO] [stdout]   --> tests/eager_drop.rs:83:14
[INFO] [stdout]    |
[INFO] [stdout] 83 |             .run_in_background();
[INFO] [stdout]    |              ^^^^^^^^^^^^^^^^^ method not found in `futures::future::Then<FutureData<UnwrapOrElse<futures::channel::oneshot::Receiver<()>, [closure@tests/eager_drop.rs:77:61: 77:77]>, std::sync::mpsc::Sender<()>>, futures::future::Ready<()>, [closure@tests/eager_drop.rs:78:19: 82:14]>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `run_in_background` found for struct `futures::future::AndThen<FutureData<UnwrapOrElse<futures::channel::oneshot::Receiver<std::result::Result<(), ()>>, [closure@tests/eager_drop.rs:101:61: 101:77]>, std::sync::mpsc::Sender<()>>, futures::future::Ready<std::result::Result<(), ()>>, [closure@tests/eager_drop.rs:102:23: 106:14]>` in the current scope
[INFO] [stdout]    --> tests/eager_drop.rs:107:14
[INFO] [stdout]     |
[INFO] [stdout] 107 |             .run_in_background();
[INFO] [stdout]     |              ^^^^^^^^^^^^^^^^^ method not found in `futures::future::AndThen<FutureData<UnwrapOrElse<futures::channel::oneshot::Receiver<std::result::Result<(), ()>>, [closure@tests/eager_drop.rs:101:61: 101:77]>, std::sync::mpsc::Sender<()>>, futures::future::Ready<std::result::Result<(), ()>>, [closure@tests/eager_drop.rs:102:23: 106:14]>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `run_in_background` found for struct `futures::future::OrElse<FutureData<UnwrapOrElse<futures::channel::oneshot::Receiver<std::result::Result<(), ()>>, [closure@tests/eager_drop.rs:125:61: 125:77]>, std::sync::mpsc::Sender<()>>, futures::future::Ready<std::result::Result<(), ()>>, [closure@tests/eager_drop.rs:126:22: 130:14]>` in the current scope
[INFO] [stdout]    --> tests/eager_drop.rs:131:14
[INFO] [stdout]     |
[INFO] [stdout] 131 |             .run_in_background();
[INFO] [stdout]     |              ^^^^^^^^^^^^^^^^^ method not found in `futures::future::OrElse<FutureData<UnwrapOrElse<futures::channel::oneshot::Receiver<std::result::Result<(), ()>>, [closure@tests/eager_drop.rs:125:61: 125:77]>, std::sync::mpsc::Sender<()>>, futures::future::Ready<std::result::Result<(), ()>>, [closure@tests/eager_drop.rs:126:22: 130:14]>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 14 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0432, E0433, E0599.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0432`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `futures`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared crate or module `futures_test`
[INFO] [stdout]  --> tests/sink.rs:4:9
[INFO] [stdout]   |
[INFO] [stdout] 4 |     use futures_test::task::panic_context;
[INFO] [stdout]   |         ^^^^^^^^^^^^ use of undeclared crate or module `futures_test`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared crate or module `futures_test`
[INFO] [stdout]    --> tests/sink.rs:595:9
[INFO] [stdout]     |
[INFO] [stdout] 595 |     use futures_test::task::panic_context;
[INFO] [stdout]     |         ^^^^^^^^^^^^ use of undeclared crate or module `futures_test`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared crate or module `futures_test`
[INFO] [stdout]  --> tests/mutex.rs:5:9
[INFO] [stdout]   |
[INFO] [stdout] 5 |     use futures_test::task::panic_context;
[INFO] [stdout]   |         ^^^^^^^^^^^^ use of undeclared crate or module `futures_test`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared crate or module `futures_test`
[INFO] [stdout]   --> tests/mutex.rs:18:9
[INFO] [stdout]    |
[INFO] [stdout] 18 |     use futures_test::task::{new_count_waker, panic_context};
[INFO] [stdout]    |         ^^^^^^^^^^^^ use of undeclared crate or module `futures_test`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared crate or module `futures_test`
[INFO] [stdout]   --> tests/mutex.rs:44:9
[INFO] [stdout]    |
[INFO] [stdout] 44 |     use futures_test::future::FutureTestExt;
[INFO] [stdout]    |         ^^^^^^^^^^^^ use of undeclared crate or module `futures_test`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0432]: unresolved import `assert_matches`
[INFO] [stdout]  --> tests/io_cursor.rs:3:9
[INFO] [stdout]   |
[INFO] [stdout] 3 |     use assert_matches::assert_matches;
[INFO] [stdout]   |         ^^^^^^^^^^^^^^ use of undeclared crate or module `assert_matches`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0432]: unresolved import `assert_matches`
[INFO] [stdout]   --> tests/io_cursor.rs:21:9
[INFO] [stdout]    |
[INFO] [stdout] 21 |     use assert_matches::assert_matches;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^ use of undeclared crate or module `assert_matches`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot determine resolution for the macro `assert_matches`
[INFO] [stdout]   --> tests/io_cursor.rs:11:9
[INFO] [stdout]    |
[INFO] [stdout] 11 |         assert_matches!(Pin::new(&mut cursor).poll_write(cx, &[1, 2]), Poll::Ready(Ok(2)));
[INFO] [stdout]    |         ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: import resolution is stuck, try simplifying macro imports
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot determine resolution for the macro `assert_matches`
[INFO] [stdout]   --> tests/io_cursor.rs:12:9
[INFO] [stdout]    |
[INFO] [stdout] 12 |         assert_matches!(Pin::new(&mut cursor).poll_write(cx, &[3, 4]), Poll::Ready(Ok(2)));
[INFO] [stdout]    |         ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: import resolution is stuck, try simplifying macro imports
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot determine resolution for the macro `assert_matches`
[INFO] [stdout]   --> tests/io_cursor.rs:13:9
[INFO] [stdout]    |
[INFO] [stdout] 13 |         assert_matches!(Pin::new(&mut cursor).poll_write(cx, &[5, 6]), Poll::Ready(Ok(2)));
[INFO] [stdout]    |         ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: import resolution is stuck, try simplifying macro imports
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot determine resolution for the macro `assert_matches`
[INFO] [stdout]   --> tests/io_cursor.rs:14:9
[INFO] [stdout]    |
[INFO] [stdout] 14 |         assert_matches!(Pin::new(&mut cursor).poll_write(cx, &[6, 7]), Poll::Ready(Ok(2)));
[INFO] [stdout]    |         ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: import resolution is stuck, try simplifying macro imports
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot determine resolution for the macro `assert_matches`
[INFO] [stdout]   --> tests/io_cursor.rs:29:9
[INFO] [stdout]    |
[INFO] [stdout] 29 |         assert_matches!(Pin::new(&mut cursor).poll_write(cx, &[1, 2]), Poll::Ready(Ok(2)));
[INFO] [stdout]    |         ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: import resolution is stuck, try simplifying macro imports
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot determine resolution for the macro `assert_matches`
[INFO] [stdout]   --> tests/io_cursor.rs:30:9
[INFO] [stdout]    |
[INFO] [stdout] 30 |         assert_matches!(Pin::new(&mut cursor).poll_write(cx, &[3, 4]), Poll::Ready(Ok(2)));
[INFO] [stdout]    |         ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: import resolution is stuck, try simplifying macro imports
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot determine resolution for the macro `assert_matches`
[INFO] [stdout]   --> tests/io_cursor.rs:31:9
[INFO] [stdout]    |
[INFO] [stdout] 31 |         assert_matches!(Pin::new(&mut cursor).poll_write(cx, &[5, 6]), Poll::Ready(Ok(1)));
[INFO] [stdout]    |         ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: import resolution is stuck, try simplifying macro imports
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot determine resolution for the macro `assert_matches`
[INFO] [stdout]   --> tests/io_cursor.rs:32:9
[INFO] [stdout]    |
[INFO] [stdout] 32 |         assert_matches!(Pin::new(&mut cursor).poll_write(cx, &[6, 7]), Poll::Ready(Ok(0)));
[INFO] [stdout]    |         ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: import resolution is stuck, try simplifying macro imports
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `AsyncWrite`
[INFO] [stdout]  --> tests/io_cursor.rs:5:23
[INFO] [stdout]   |
[INFO] [stdout] 5 |     use futures::io::{AsyncWrite, Cursor};
[INFO] [stdout]   |                       ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `futures::task::Poll`
[INFO] [stdout]  --> tests/io_cursor.rs:6:9
[INFO] [stdout]   |
[INFO] [stdout] 6 |     use futures::task::Poll;
[INFO] [stdout]   |         ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::pin::Pin`
[INFO] [stdout]  --> tests/io_cursor.rs:7:9
[INFO] [stdout]   |
[INFO] [stdout] 7 |     use std::pin::Pin;
[INFO] [stdout]   |         ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `AsyncWrite`
[INFO] [stdout]   --> tests/io_cursor.rs:23:23
[INFO] [stdout]    |
[INFO] [stdout] 23 |     use futures::io::{AsyncWrite, Cursor};
[INFO] [stdout]    |                       ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `futures::task::Poll`
[INFO] [stdout]   --> tests/io_cursor.rs:24:9
[INFO] [stdout]    |
[INFO] [stdout] 24 |     use futures::task::Poll;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::pin::Pin`
[INFO] [stdout]   --> tests/io_cursor.rs:25:9
[INFO] [stdout]    |
[INFO] [stdout] 25 |     use std::pin::Pin;
[INFO] [stdout]    |         ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared crate or module `futures_test`
[INFO] [stdout]    --> tests/sink.rs:618:9
[INFO] [stdout]     |
[INFO] [stdout] 618 |     use futures_test::task::panic_context;
[INFO] [stdout]     |         ^^^^^^^^^^^^ use of undeclared crate or module `futures_test`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared crate or module `futures_test`
[INFO] [stdout]  --> tests/fuse.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use futures_test::task::panic_waker;
[INFO] [stdout]   |     ^^^^^^^^^^^^ use of undeclared crate or module `futures_test`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find function `noop_context` in this scope
[INFO] [stdout]  --> tests/try_stream.rs:9:19
[INFO] [stdout]   |
[INFO] [stdout] 9 |     let cx = &mut noop_context();
[INFO] [stdout]   |                   ^^^^^^^^^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find function `noop_context` in this scope
[INFO] [stdout]   --> tests/try_stream.rs:20:19
[INFO] [stdout]    |
[INFO] [stdout] 20 |     let cx = &mut noop_context();
[INFO] [stdout]    |                   ^^^^^^^^^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared crate or module `futures_test`
[INFO] [stdout]  --> tests/basic_combinators.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use futures_test::future::FutureTestExt;
[INFO] [stdout]   |     ^^^^^^^^^^^^ use of undeclared crate or module `futures_test`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find function `noop_context` in this scope
[INFO] [stdout]   --> tests/try_stream.rs:31:19
[INFO] [stdout]    |
[INFO] [stdout] 31 |     let cx = &mut noop_context();
[INFO] [stdout]    |                   ^^^^^^^^^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared crate or module `futures_test`
[INFO] [stdout]   --> tests/io_buf_writer.rs:49:13
[INFO] [stdout]    |
[INFO] [stdout] 49 |         use futures_test::task::noop_context;
[INFO] [stdout]    |             ^^^^^^^^^^^^ use of undeclared crate or module `futures_test`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find function `panic_waker` in this scope
[INFO] [stdout]  --> tests/fuse.rs:8:17
[INFO] [stdout]   |
[INFO] [stdout] 8 |     let waker = panic_waker();
[INFO] [stdout]   |                 ^^^^^^^^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared crate or module `futures_test`
[INFO] [stdout]   --> tests/io_read_line.rs:30:13
[INFO] [stdout]    |
[INFO] [stdout] 30 |         use futures_test::task::noop_context;
[INFO] [stdout]    |             ^^^^^^^^^^^^ use of undeclared crate or module `futures_test`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared crate or module `futures_test`
[INFO] [stdout]   --> tests/io_read_until.rs:29:13
[INFO] [stdout]    |
[INFO] [stdout] 29 |         use futures_test::task::noop_context;
[INFO] [stdout]    |             ^^^^^^^^^^^^ use of undeclared crate or module `futures_test`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: could not find `ThreadPool` in `executor`
[INFO] [stdout]   --> tests/mutex.rs:48:35
[INFO] [stdout]    |
[INFO] [stdout] 48 |     let pool = futures::executor::ThreadPool::builder()
[INFO] [stdout]    |                                   ^^^^^^^^^^ could not find `ThreadPool` in `executor`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find function `panic_context` in this scope
[INFO] [stdout]  --> tests/mutex.rs:9:46
[INFO] [stdout]   |
[INFO] [stdout] 9 |         assert!(mutex.lock().poll_unpin(&mut panic_context()).is_ready());
[INFO] [stdout]   |                                              ^^^^^^^^^^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find function `new_count_waker` in this scope
[INFO] [stdout]   --> tests/mutex.rs:21:28
[INFO] [stdout]    |
[INFO] [stdout] 21 |     let (waker, counter) = new_count_waker();
[INFO] [stdout]    |                            ^^^^^^^^^^^^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find function `panic_context` in this scope
[INFO] [stdout]   --> tests/mutex.rs:22:45
[INFO] [stdout]    |
[INFO] [stdout] 22 |     let lock = mutex.lock().poll_unpin(&mut panic_context());
[INFO] [stdout]    |                                             ^^^^^^^^^^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find function `panic_context` in this scope
[INFO] [stdout]   --> tests/mutex.rs:33:36
[INFO] [stdout]    |
[INFO] [stdout] 33 |     assert!(waiter.poll_unpin(&mut panic_context()).is_ready());
[INFO] [stdout]    |                                    ^^^^^^^^^^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared crate or module `futures_test`
[INFO] [stdout]   --> tests/io_read_until.rs:42:9
[INFO] [stdout]    |
[INFO] [stdout] 42 |     use futures_test::io::AsyncReadTestExt;
[INFO] [stdout]    |         ^^^^^^^^^^^^ use of undeclared crate or module `futures_test`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared crate or module `futures_test`
[INFO] [stdout]   --> tests/io_read_line.rs:42:9
[INFO] [stdout]    |
[INFO] [stdout] 42 |     use futures_test::io::AsyncReadTestExt;
[INFO] [stdout]    |         ^^^^^^^^^^^^ use of undeclared crate or module `futures_test`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `run_in_background` found for struct `futures::future::Map<futures::future::Map<futures::future::Then<futures::future::Ready<{integer}>, futures::future::Ready<{integer}>, [closure@tests/basic_combinators.rs:12:15: 16:10]>, [closure@tests/basic_combinators.rs:16:16: 20:10]>, [closure@tests/basic_combinators.rs:20:16: 22:10]>` in the current scope
[INFO] [stdout]   --> tests/basic_combinators.rs:25:9
[INFO] [stdout]    |
[INFO] [stdout] 25 |     fut.run_in_background(); // Start it
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^ method not found in `futures::future::Map<futures::future::Map<futures::future::Then<futures::future::Ready<{integer}>, futures::future::Ready<{integer}>, [closure@tests/basic_combinators.rs:12:15: 16:10]>, [closure@tests/basic_combinators.rs:16:16: 20:10]>, [closure@tests/basic_combinators.rs:20:16: 22:10]>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0425, E0433.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0425`.
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 4 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0425, E0433.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0425`.
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find function `noop_context` in this scope
[INFO] [stdout]   --> tests/io_buf_writer.rs:51:22
[INFO] [stdout]    |
[INFO] [stdout] 51 |         let mut cx = noop_context();
[INFO] [stdout]    |                      ^^^^^^^^^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find function `noop_context` in this scope
[INFO] [stdout]   --> tests/io_read_until.rs:32:22
[INFO] [stdout]    |
[INFO] [stdout] 32 |         let mut cx = noop_context();
[INFO] [stdout]    |                      ^^^^^^^^^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find function `noop_context` in this scope
[INFO] [stdout]   --> tests/io_read_line.rs:32:22
[INFO] [stdout]    |
[INFO] [stdout] 32 |         let mut cx = noop_context();
[INFO] [stdout]    |                      ^^^^^^^^^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `run_in_background` found for struct `futures::future::Map<futures::future::MapErr<futures::future::MapOk<futures::future::OrElse<futures::future::AndThen<futures::future::Map<futures::future::MapErr<futures::future::MapOk<futures::future::OrElse<futures::future::AndThen<futures::future::Ready<std::result::Result<i32, i32>>, futures::future::Ready<std::result::Result<i32, i32>>, [closure@tests/basic_combinators.rs:44:19: 48:10]>, futures::future::Ready<std::result::Result<i32, i32>>, [closure@tests/basic_combinators.rs:49:18: 53:10]>, [closure@tests/basic_combinators.rs:54:17: 58:10]>, [closure@tests/basic_combinators.rs:59:18: 63:10]>, [closure@tests/basic_combinators.rs:64:14: 68:10]>, futures::future::Ready<std::result::Result<i32, i32>>, [closure@tests/basic_combinators.rs:69:19: 73:10]>, futures::future::Ready<std::result::Result<i32, i32>>, [closure@tests/basic_combinators.rs:74:18: 78:10]>, [closure@tests/basic_combinators.rs:79:17: 83:10]>, [closure@tests/basic_combinators.rs:84:18: 88:10]>, [closure@tests/basic_combinators.rs:89:14: 92:10]>` in the current scope
[INFO] [stdout]   --> tests/basic_combinators.rs:95:9
[INFO] [stdout]    |
[INFO] [stdout] 95 |     fut.run_in_background(); // Start it
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^ method not found in `futures::future::Map<futures::future::MapErr<futures::future::MapOk<futures::future::OrElse<futures::future::AndThen<futures::future::Map<futures::future::MapErr<futures::future::MapOk<futures::future::OrElse<futures::future::AndThen<futures::future::Ready<std::result::Result<i32, i32>>, futures::future::Ready<std::result::Result<i32, i32>>, [closure@tests/basic_combinators.rs:44:19: 48:10]>, futures::future::Ready<std::result::Result<i32, i32>>, [closure@tests/basic_combinators.rs:49:18: 53:10]>, [closure@tests/basic_combinators.rs:54:17: 58:10]>, [closure@tests/basic_combinators.rs:59:18: 63:10]>, [closure@tests/basic_combinators.rs:64:14: 68:10]>, futures::future::Ready<std::result::Result<i32, i32>>, [closure@tests/basic_combinators.rs:69:19: 73:10]>, futures::future::Ready<std::result::Result<i32, i32>>, [closure@tests/basic_combinators.rs:74:18: 78:10]>, [closure@tests/basic_combinators.rs:79:17: 83:10]>, [closure@tests/basic_combinators.rs:84:18: 88:10]>, [closure@tests/basic_combinators.rs:89:14: 92:10]>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 3 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0433, E0599.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0433`.
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 10 previous errors; 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0432`.
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find function `panic_context` in this scope
[INFO] [stdout]   --> tests/sink.rs:12:38
[INFO] [stdout]    |
[INFO] [stdout] 12 |         match s.poll_next_unpin(&mut panic_context()) {
[INFO] [stdout]    |                                      ^^^^^^^^^^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find function `panic_context` in this scope
[INFO] [stdout]    --> tests/sink.rs:599:23
[INFO] [stdout]     |
[INFO] [stdout] 599 |         let cx = &mut panic_context();
[INFO] [stdout]     |                       ^^^^^^^^^^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find function `panic_context` in this scope
[INFO] [stdout]    --> tests/sink.rs:631:23
[INFO] [stdout]     |
[INFO] [stdout] 631 |         let cx = &mut panic_context();
[INFO] [stdout]     |                       ^^^^^^^^^^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0425, E0433.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0425`.
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `interleave_pending` found for reference `&'static [u8; 2]` in the current scope
[INFO] [stdout]   --> tests/io_read_until.rs:44:25
[INFO] [stdout]    |
[INFO] [stdout] 44 |     let mut buf = b"12".interleave_pending();
[INFO] [stdout]    |                         ^^^^^^^^^^^^^^^^^^ method not found in `&'static [u8; 2]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `interleave_pending` found for reference `&'static [u8; 2]` in the current scope
[INFO] [stdout]   --> tests/io_read_line.rs:44:25
[INFO] [stdout]    |
[INFO] [stdout] 44 |     let mut buf = b"12".interleave_pending();
[INFO] [stdout]    |                         ^^^^^^^^^^^^^^^^^^ method not found in `&'static [u8; 2]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `interleave_pending` found for struct `IntoAsyncRead<futures::stream::Map<futures::stream::Iter<std::vec::IntoIter<&[u8]>>, fn(&[u8]) -> std::result::Result<&[u8], std::io::Error> {std::result::Result::<&[u8], std::io::Error>::Ok}>>` in the current scope
[INFO] [stdout]   --> tests/io_read_line.rs:52:10
[INFO] [stdout]    |
[INFO] [stdout] 52 |         .interleave_pending();
[INFO] [stdout]    |          ^^^^^^^^^^^^^^^^^^ method not found in `IntoAsyncRead<futures::stream::Map<futures::stream::Iter<std::vec::IntoIter<&[u8]>>, fn(&[u8]) -> std::result::Result<&[u8], std::io::Error> {std::result::Result::<&[u8], std::io::Error>::Ok}>>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `futures::io::AsyncBufReadExt`
[INFO] [stdout]   --> tests/io_read_line.rs:41:9
[INFO] [stdout]    |
[INFO] [stdout] 41 |     use futures::io::AsyncBufReadExt;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 5 previous errors; 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0425, E0433, E0599.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0425`.
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `interleave_pending` found for struct `IntoAsyncRead<futures::stream::Map<futures::stream::Iter<std::vec::IntoIter<&[u8]>>, fn(&[u8]) -> std::result::Result<&[u8], std::io::Error> {std::result::Result::<&[u8], std::io::Error>::Ok}>>` in the current scope
[INFO] [stdout]   --> tests/io_read_until.rs:52:10
[INFO] [stdout]    |
[INFO] [stdout] 52 |         .interleave_pending();
[INFO] [stdout]    |          ^^^^^^^^^^^^^^^^^^ method not found in `IntoAsyncRead<futures::stream::Map<futures::stream::Iter<std::vec::IntoIter<&[u8]>>, fn(&[u8]) -> std::result::Result<&[u8], std::io::Error> {std::result::Result::<&[u8], std::io::Error>::Ok}>>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `pending_once` found for struct `futures::future::Ready<()>` in the current scope
[INFO] [stdout]   --> tests/mutex.rs:62:23
[INFO] [stdout]    |
[INFO] [stdout] 62 |             ready(()).pending_once().await;
[INFO] [stdout]    |                       ^^^^^^^^^^^^ method not found in `futures::future::Ready<()>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `futures::io::AsyncBufReadExt`
[INFO] [stdout]   --> tests/io_read_until.rs:41:9
[INFO] [stdout]    |
[INFO] [stdout] 41 |     use futures::io::AsyncBufReadExt;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0698]: type inside `async` block must be known in this context
[INFO] [stdout]   --> tests/mutex.rs:61:28
[INFO] [stdout]    |
[INFO] [stdout] 61 |             let mut lock = mutex.lock().await;
[INFO] [stdout]    |                            ^^^^^ cannot infer type for type `{integer}`
[INFO] [stdout]    |
[INFO] [stdout] note: the type is part of the `async` block because of this `await`
[INFO] [stdout]   --> tests/mutex.rs:61:28
[INFO] [stdout]    |
[INFO] [stdout] 61 |             let mut lock = mutex.lock().await;
[INFO] [stdout]    |                            ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0698]: type inside `async` block must be known in this context
[INFO] [stdout]   --> tests/mutex.rs:61:28
[INFO] [stdout]    |
[INFO] [stdout] 61 |             let mut lock = mutex.lock().await;
[INFO] [stdout]    |                            ^^^^^^^^^^^^ cannot infer type for type `{integer}`
[INFO] [stdout]    |
[INFO] [stdout] note: the type is part of the `async` block because of this `await`
[INFO] [stdout]   --> tests/mutex.rs:61:28
[INFO] [stdout]    |
[INFO] [stdout] 61 |             let mut lock = mutex.lock().await;
[INFO] [stdout]    |                            ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 5 previous errors; 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0425, E0433, E0599.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0425`.
[INFO] [stdout] 
[INFO] [stdout] error[E0698]: type inside `async` block must be known in this context
[INFO] [stdout]   --> tests/mutex.rs:61:28
[INFO] [stdout]    |
[INFO] [stdout] 61 |             let mut lock = mutex.lock().await;
[INFO] [stdout]    |                            ^^^^^^^^^^^^^^^^^^ cannot infer type for type `{integer}`
[INFO] [stdout]    |
[INFO] [stdout] note: the type is part of the `async` block because of this `await`
[INFO] [stdout]   --> tests/mutex.rs:61:28
[INFO] [stdout]    |
[INFO] [stdout] 61 |             let mut lock = mutex.lock().await;
[INFO] [stdout]    |                            ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0698]: type inside `async` block must be known in this context
[INFO] [stdout]   --> tests/mutex.rs:61:17
[INFO] [stdout]    |
[INFO] [stdout] 61 |             let mut lock = mutex.lock().await;
[INFO] [stdout]    |                 ^^^^^^^^ cannot infer type for type `{integer}`
[INFO] [stdout]    |
[INFO] [stdout] note: the type is part of the `async` block because of this `await`
[INFO] [stdout]   --> tests/mutex.rs:62:13
[INFO] [stdout]    |
[INFO] [stdout] 62 |             ready(()).pending_once().await;
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0698]: type inside `async` block must be known in this context
[INFO] [stdout]   --> tests/mutex.rs:71:18
[INFO] [stdout]    |
[INFO] [stdout] 71 |         for _ in 0..num_tasks {
[INFO] [stdout]    |                  ^ cannot infer type for type `{integer}`
[INFO] [stdout]    |
[INFO] [stdout] note: the type is part of the `async` block because of this `await`
[INFO] [stdout]   --> tests/mutex.rs:72:13
[INFO] [stdout]    |
[INFO] [stdout] 72 |             rx.next().await.unwrap();
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0698]: type inside `async` block must be known in this context
[INFO] [stdout]   --> tests/mutex.rs:71:21
[INFO] [stdout]    |
[INFO] [stdout] 71 |         for _ in 0..num_tasks {
[INFO] [stdout]    |                     ^^^^^^^^^ cannot infer type for type `{integer}`
[INFO] [stdout]    |
[INFO] [stdout] note: the type is part of the `async` block because of this `await`
[INFO] [stdout]   --> tests/mutex.rs:72:13
[INFO] [stdout]    |
[INFO] [stdout] 72 |             rx.next().await.unwrap();
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0698]: type inside `async` block must be known in this context
[INFO] [stdout]   --> tests/mutex.rs:71:18
[INFO] [stdout]    |
[INFO] [stdout] 71 |         for _ in 0..num_tasks {
[INFO] [stdout]    |                  ^^^^^^^^^^^^ cannot infer type for type `{integer}`
[INFO] [stdout]    |
[INFO] [stdout] note: the type is part of the `async` block because of this `await`
[INFO] [stdout]   --> tests/mutex.rs:72:13
[INFO] [stdout]    |
[INFO] [stdout] 72 |             rx.next().await.unwrap();
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0698]: type inside `async` block must be known in this context
[INFO] [stdout]   --> tests/mutex.rs:71:18
[INFO] [stdout]    |
[INFO] [stdout] 71 |         for _ in 0..num_tasks {
[INFO] [stdout]    |                  ^^^^^^^^^^^^ cannot infer type for type `{integer}`
[INFO] [stdout]    |
[INFO] [stdout] note: the type is part of the `async` block because of this `await`
[INFO] [stdout]   --> tests/mutex.rs:72:13
[INFO] [stdout]    |
[INFO] [stdout] 72 |             rx.next().await.unwrap();
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0698]: type inside `async` block must be known in this context
[INFO] [stdout]   --> tests/mutex.rs:74:20
[INFO] [stdout]    |
[INFO] [stdout] 74 |         let lock = mutex.lock().await;
[INFO] [stdout]    |                    ^^^^^ cannot infer type for type `{integer}`
[INFO] [stdout]    |
[INFO] [stdout] note: the type is part of the `async` block because of this `await`
[INFO] [stdout]   --> tests/mutex.rs:74:20
[INFO] [stdout]    |
[INFO] [stdout] 74 |         let lock = mutex.lock().await;
[INFO] [stdout]    |                    ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0698]: type inside `async` block must be known in this context
[INFO] [stdout]   --> tests/mutex.rs:74:20
[INFO] [stdout]    |
[INFO] [stdout] 74 |         let lock = mutex.lock().await;
[INFO] [stdout]    |                    ^^^^^^^^^^^^ cannot infer type for type `{integer}`
[INFO] [stdout]    |
[INFO] [stdout] note: the type is part of the `async` block because of this `await`
[INFO] [stdout]   --> tests/mutex.rs:74:20
[INFO] [stdout]    |
[INFO] [stdout] 74 |         let lock = mutex.lock().await;
[INFO] [stdout]    |                    ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0698]: type inside `async` block must be known in this context
[INFO] [stdout]   --> tests/mutex.rs:74:20
[INFO] [stdout]    |
[INFO] [stdout] 74 |         let lock = mutex.lock().await;
[INFO] [stdout]    |                    ^^^^^^^^^^^^^^^^^^ cannot infer type for type `{integer}`
[INFO] [stdout]    |
[INFO] [stdout] note: the type is part of the `async` block because of this `await`
[INFO] [stdout]   --> tests/mutex.rs:74:20
[INFO] [stdout]    |
[INFO] [stdout] 74 |         let lock = mutex.lock().await;
[INFO] [stdout]    |                    ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `futures::task::SpawnExt`
[INFO] [stdout]   --> tests/mutex.rs:43:9
[INFO] [stdout]    |
[INFO] [stdout] 43 |     use futures::task::SpawnExt;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 20 previous errors; 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0425, E0433, E0599, E0698.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0425`.
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 6 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0425, E0433.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0425`.
[INFO] [stdout] 
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "3c466373c492222440a5b1fa6f86e9a554fbc39365281ce6a9dc791d30abd667", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3c466373c492222440a5b1fa6f86e9a554fbc39365281ce6a9dc791d30abd667", kill_on_drop: false }`
[INFO] [stdout] 3c466373c492222440a5b1fa6f86e9a554fbc39365281ce6a9dc791d30abd667