[INFO] crate futures-channel-preview 0.3.0-alpha.19 is already in cache
[INFO] checking futures-channel-preview-0.3.0-alpha.19 against master#bf1f2eedda4fa02b7c9347dd849ed73ddd43dedc for pr-70917
[INFO] extracting crate futures-channel-preview 0.3.0-alpha.19 into /workspace/builds/worker-3/source
[INFO] validating manifest of crates.io crate futures-channel-preview 0.3.0-alpha.19 on toolchain bf1f2eedda4fa02b7c9347dd849ed73ddd43dedc
[INFO] running `"/workspace/cargo-home/bin/cargo" "+bf1f2eedda4fa02b7c9347dd849ed73ddd43dedc" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate futures-channel-preview 0.3.0-alpha.19
[INFO] finished tweaking crates.io crate futures-channel-preview 0.3.0-alpha.19
[INFO] tweaked toml for crates.io crate futures-channel-preview 0.3.0-alpha.19 written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+bf1f2eedda4fa02b7c9347dd849ed73ddd43dedc" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+bf1f2eedda4fa02b7c9347dd849ed73ddd43dedc" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+bf1f2eedda4fa02b7c9347dd849ed73ddd43dedc" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 241ca056b91aa783982dce071aa6586c1c6b36749f3fc2a6385a3bf440d1e9a0
[INFO] running `"docker" "start" "-a" "241ca056b91aa783982dce071aa6586c1c6b36749f3fc2a6385a3bf440d1e9a0"`
[INFO] [stderr]     Checking futures-channel-preview v0.3.0-alpha.19 (/opt/rustwide/workdir)
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `futures`
[INFO] [stderr]  --> tests/oneshot.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use futures::channel::oneshot::{self, Sender};
[INFO] [stderr]   |     ^^^^^^^ use of undeclared type or module `futures`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `futures`
[INFO] [stderr]  --> tests/oneshot.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 | use futures::executor::block_on;
[INFO] [stderr]   |     ^^^^^^^ use of undeclared type or module `futures`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `futures`
[INFO] [stderr]  --> tests/oneshot.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 | use futures::future::{Future, FutureExt, poll_fn};
[INFO] [stderr]   |     ^^^^^^^ use of undeclared type or module `futures`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `futures`
[INFO] [stderr]  --> tests/oneshot.rs:4:5
[INFO] [stderr]   |
[INFO] [stderr] 4 | use futures::task::{Context, Poll};
[INFO] [stderr]   |     ^^^^^^^ use of undeclared type or module `futures`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `futures_test`
[INFO] [stderr]  --> tests/oneshot.rs:5:5
[INFO] [stderr]   |
[INFO] [stderr] 5 | use futures_test::task::panic_waker_ref;
[INFO] [stderr]   |     ^^^^^^^^^^^^ use of undeclared type or module `futures_test`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `oneshot`
[INFO] [stderr]   --> tests/oneshot.rs:12:24
[INFO] [stderr]    |
[INFO] [stderr] 12 |     let (mut tx, rx) = oneshot::channel::<u32>();
[INFO] [stderr]    |                        ^^^^^^^ use of undeclared type or module `oneshot`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `Poll`
[INFO] [stderr]   --> tests/oneshot.rs:20:9
[INFO] [stderr]    |
[INFO] [stderr] 20 |         Poll::Ready(())
[INFO] [stderr]    |         ^^^^ use of undeclared type or module `Poll`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `oneshot`
[INFO] [stderr]   --> tests/oneshot.rs:28:20
[INFO] [stderr]    |
[INFO] [stderr] 28 |     let (tx, rx) = oneshot::channel::<u32>();
[INFO] [stderr]    |                    ^^^^^^^ use of undeclared type or module `oneshot`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `futures`
[INFO] [stderr]  --> benches/sync_mpsc.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 |     futures::{
[INFO] [stderr]   |     ^^^^^^^ use of undeclared type or module `futures`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `oneshot`
[INFO] [stderr]   --> tests/oneshot.rs:60:26
[INFO] [stderr]    |
[INFO] [stderr] 60 |         let (otx, orx) = oneshot::channel::<u32>();
[INFO] [stderr]    |                          ^^^^^^^ use of undeclared type or module `oneshot`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `oneshot`
[INFO] [stderr]   --> tests/oneshot.rs:73:24
[INFO] [stderr]    |
[INFO] [stderr] 73 |     let (mut tx, rx) = oneshot::channel::<u32>();
[INFO] [stderr]    |                        ^^^^^^^ use of undeclared type or module `oneshot`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `Context`
[INFO] [stderr]   --> tests/oneshot.rs:74:18
[INFO] [stderr]    |
[INFO] [stderr] 74 |     let mut cx = Context::from_waker(panic_waker_ref());
[INFO] [stderr]    |                  ^^^^^^^ use of undeclared type or module `Context`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `Poll`
[INFO] [stderr]   --> tests/oneshot.rs:75:41
[INFO] [stderr]    |
[INFO] [stderr] 75 |     assert_eq!(tx.poll_cancel(&mut cx), Poll::Pending);
[INFO] [stderr]    |                                         ^^^^ use of undeclared type or module `Poll`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `oneshot`
[INFO] [stderr]   --> tests/oneshot.rs:82:28
[INFO] [stderr]    |
[INFO] [stderr] 82 |     let (mut tx, mut rx) = oneshot::channel::<u32>();
[INFO] [stderr]    |                            ^^^^^^^ use of undeclared type or module `oneshot`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `Poll`
[INFO] [stderr]   --> tests/oneshot.rs:86:13
[INFO] [stderr]    |
[INFO] [stderr] 86 |             Poll::Ready(Err(_)) => {},
[INFO] [stderr]    |             ^^^^ use of undeclared type or module `Poll`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `Poll`
[INFO] [stderr]   --> tests/oneshot.rs:90:9
[INFO] [stderr]    |
[INFO] [stderr] 90 |         Poll::Ready(())
[INFO] [stderr]    |         ^^^^ use of undeclared type or module `Poll`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `oneshot`
[INFO] [stderr]   --> tests/oneshot.rs:96:24
[INFO] [stderr]    |
[INFO] [stderr] 96 |     let (tx, mut rx) = oneshot::channel::<u32>();
[INFO] [stderr]    |                        ^^^^^^^ use of undeclared type or module `oneshot`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `oneshot`
[INFO] [stderr]    --> tests/oneshot.rs:109:20
[INFO] [stderr]     |
[INFO] [stderr] 109 |     let (tx, rx) = oneshot::channel::<u32>();
[INFO] [stderr]     |                    ^^^^^^^ use of undeclared type or module `oneshot`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `oneshot`
[INFO] [stderr]    --> tests/oneshot.rs:125:30
[INFO] [stderr]     |
[INFO] [stderr] 125 |         let (otx, mut orx) = oneshot::channel::<u32>();
[INFO] [stderr]     |                              ^^^^^^^ use of undeclared type or module `oneshot`
[INFO] [stderr] 
[INFO] [stderr] error[E0425]: cannot find function `poll_fn` in this scope
[INFO] [stderr]   --> tests/oneshot.rs:14:13
[INFO] [stderr]    |
[INFO] [stderr] 14 |     let f = poll_fn(|cx| {
[INFO] [stderr]    |             ^^^^^^^ not found in this scope
[INFO] [stderr] 
[INFO] [stderr] error[E0425]: cannot find function `block_on` in this scope
[INFO] [stderr]   --> tests/oneshot.rs:23:5
[INFO] [stderr]    |
[INFO] [stderr] 23 |     block_on(f);
[INFO] [stderr]    |     ^^^^^^^^ not found in this scope
[INFO] [stderr] 
[INFO] [stderr] error[E0425]: cannot find function `block_on` in this scope
[INFO] [stderr]   --> tests/oneshot.rs:31:9
[INFO] [stderr]    |
[INFO] [stderr] 31 |         block_on(WaitForCancel { tx: tx });
[INFO] [stderr]    |         ^^^^^^^^ not found in this scope
[INFO] [stderr] 
[INFO] [stderr] error[E0412]: cannot find type `Sender` in this scope
[INFO] [stderr]   --> tests/oneshot.rs:38:9
[INFO] [stderr]    |
[INFO] [stderr] 38 |       tx: Sender<u32>,
[INFO] [stderr]    |           ^^^^^^
[INFO] [stderr]    |
[INFO] [stderr] help: a trait with a similar name exists
[INFO] [stderr]    |
[INFO] [stderr] 38 |     tx: Send<u32>,
[INFO] [stderr]    |         ^^^^
[INFO] [stderr] help: possible candidates are found in other modules, you can import them into scope
[INFO] [stderr]    |
[INFO] [stderr] 1  | use futures_channel::mpsc::Sender;
[INFO] [stderr]    |
[INFO] [stderr] 1  | use futures_channel::oneshot::Sender;
[INFO] [stderr]    |
[INFO] [stderr] 1  | use std::sync::mpsc::Sender;
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] error[E0405]: cannot find trait `Future` in this scope
[INFO] [stderr]   --> tests/oneshot.rs:41:6
[INFO] [stderr]    |
[INFO] [stderr] 41 | impl Future for WaitForCancel {
[INFO] [stderr]    |      ^^^^^^ not found in this scope
[INFO] [stderr]    |
[INFO] [stderr] help: possible candidates are found in other modules, you can import them into scope
[INFO] [stderr]    |
[INFO] [stderr] 1  | use core::future::Future;
[INFO] [stderr]    |
[INFO] [stderr] 1  | use futures_core::Future;
[INFO] [stderr]    |
[INFO] [stderr] 1  | use futures_core::core_reexport::future::Future;
[INFO] [stderr]    |
[INFO] [stderr] 1  | use futures_core::future::Future;
[INFO] [stderr]    |
[INFO] [stderr]      and 1 other candidate
[INFO] [stderr] 
[INFO] [stderr] error[E0412]: cannot find type `Context` in this scope
[INFO] [stderr]   --> tests/oneshot.rs:44:48
[INFO] [stderr]    |
[INFO] [stderr] 44 |     fn poll(mut self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<Self::Output> {
[INFO] [stderr]    |                                                ^^^^^^^ not found in this scope
[INFO] [stderr]    |
[INFO] [stderr] help: possible candidates are found in other modules, you can import them into scope
[INFO] [stderr]    |
[INFO] [stderr] 1  | use core::task::Context;
[INFO] [stderr]    |
[INFO] [stderr] 1  | use futures_core::core_reexport::task::Context;
[INFO] [stderr]    |
[INFO] [stderr] 1  | use futures_core::task::Context;
[INFO] [stderr]    |
[INFO] [stderr] 1  | use std::task::Context;
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] error[E0412]: cannot find type `Poll` in this scope
[INFO] [stderr]   --> tests/oneshot.rs:44:64
[INFO] [stderr]    |
[INFO] [stderr] 44 |     fn poll(mut self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<Self::Output> {
[INFO] [stderr]    |                                                                ^^^^ not found in this scope
[INFO] [stderr]    |
[INFO] [stderr] help: possible candidates are found in other modules, you can import them into scope
[INFO] [stderr]    |
[INFO] [stderr] 1  | use core::task::Poll;
[INFO] [stderr]    |
[INFO] [stderr] 1  | use futures_core::Poll;
[INFO] [stderr]    |
[INFO] [stderr] 1  | use futures_core::core_reexport::task::Poll;
[INFO] [stderr]    |
[INFO] [stderr] 1  | use futures_core::task::Poll;
[INFO] [stderr]    |
[INFO] [stderr]      and 1 other candidate
[INFO] [stderr] 
[INFO] [stderr] error[E0412]: cannot find type `Sender` in this scope
[INFO] [stderr]   --> tests/oneshot.rs:51:37
[INFO] [stderr]    |
[INFO] [stderr] 51 |       let (tx, rx) = mpsc::channel::<(Sender<_>, mpsc::Sender<_>)>();
[INFO] [stderr]    |                                       ^^^^^^
[INFO] [stderr]    |
[INFO] [stderr] help: a trait with a similar name exists
[INFO] [stderr]    |
[INFO] [stderr] 51 |     let (tx, rx) = mpsc::channel::<(Send<_>, mpsc::Sender<_>)>();
[INFO] [stderr]    |                                     ^^^^
[INFO] [stderr] help: possible candidates are found in other modules, you can import them into scope
[INFO] [stderr]    |
[INFO] [stderr] 1  | use futures_channel::mpsc::Sender;
[INFO] [stderr]    |
[INFO] [stderr] 1  | use futures_channel::oneshot::Sender;
[INFO] [stderr]    |
[INFO] [stderr] 1  | use std::sync::mpsc::Sender;
[INFO] [stderr]    |
[INFO] [stderr] help: you might be missing a type parameter
[INFO] [stderr]    |
[INFO] [stderr] 50 | fn cancel_lots<Sender>() {
[INFO] [stderr]    |               ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error[E0425]: cannot find function `block_on` in this scope
[INFO] [stderr]   --> tests/oneshot.rs:54:13
[INFO] [stderr]    |
[INFO] [stderr] 54 |             block_on(WaitForCancel { tx });
[INFO] [stderr]    |             ^^^^^^^^ not found in this scope
[INFO] [stderr] 
[INFO] [stderr] error[E0425]: cannot find function `panic_waker_ref` in this scope
[INFO] [stderr]   --> tests/oneshot.rs:74:38
[INFO] [stderr]    |
[INFO] [stderr] 74 |     let mut cx = Context::from_waker(panic_waker_ref());
[INFO] [stderr]    |                                      ^^^^^^^^^^^^^^^ not found in this scope
[INFO] [stderr] 
[INFO] [stderr] error[E0425]: cannot find function `block_on` in this scope
[INFO] [stderr]   --> tests/oneshot.rs:84:5
[INFO] [stderr]    |
[INFO] [stderr] 84 |     block_on(poll_fn(|cx| {
[INFO] [stderr]    |     ^^^^^^^^ not found in this scope
[INFO] [stderr] 
[INFO] [stderr] error[E0425]: cannot find function `poll_fn` in this scope
[INFO] [stderr]   --> tests/oneshot.rs:84:14
[INFO] [stderr]    |
[INFO] [stderr] 84 |     block_on(poll_fn(|cx| {
[INFO] [stderr]    |              ^^^^^^^ not found in this scope
[INFO] [stderr] 
[INFO] [stderr] error[E0425]: cannot find function `block_on` in this scope
[INFO] [stderr]    --> tests/oneshot.rs:102:5
[INFO] [stderr]     |
[INFO] [stderr] 102 |     block_on(WaitForCancel { tx: tx });
[INFO] [stderr]     |     ^^^^^^^^ not found in this scope
[INFO] [stderr] 
[INFO] [stderr] error[E0412]: cannot find type `Sender` in this scope
[INFO] [stderr]    --> tests/oneshot.rs:117:36
[INFO] [stderr]     |
[INFO] [stderr] 117 |       let (tx, rx) = mpsc::channel::<Sender<_>>();
[INFO] [stderr]     |                                      ^^^^^^
[INFO] [stderr]     |
[INFO] [stderr] help: a trait with a similar name exists
[INFO] [stderr]     |
[INFO] [stderr] 117 |     let (tx, rx) = mpsc::channel::<Send<_>>();
[INFO] [stderr]     |                                    ^^^^
[INFO] [stderr] help: possible candidates are found in other modules, you can import them into scope
[INFO] [stderr]     |
[INFO] [stderr] 1   | use futures_channel::mpsc::Sender;
[INFO] [stderr]     |
[INFO] [stderr] 1   | use futures_channel::oneshot::Sender;
[INFO] [stderr]     |
[INFO] [stderr] 1   | use std::sync::mpsc::Sender;
[INFO] [stderr]     |
[INFO] [stderr] help: you might be missing a type parameter
[INFO] [stderr]     |
[INFO] [stderr] 116 | fn cancel_sends<Sender>() {
[INFO] [stderr]     |                ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error[E0425]: cannot find function `block_on` in this scope
[INFO] [stderr]    --> tests/oneshot.rs:129:14
[INFO] [stderr]     |
[INFO] [stderr] 129 |         drop(block_on(orx));
[INFO] [stderr]     |              ^^^^^^^^ not found in this scope
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 33 previous errors
[INFO] [stderr] 
[INFO] [stderr] Some errors have detailed explanations: E0405, E0412, E0425, E0433.
[INFO] [stderr] For more information about an error, try `rustc --explain E0405`.
[INFO] [stderr] error: could not compile `futures-channel-preview`.
[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] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `futures_test`
[INFO] [stderr]   --> benches/sync_mpsc.rs:14:5
[INFO] [stderr]    |
[INFO] [stderr] 14 |     futures_test::task::noop_context,
[INFO] [stderr]    |     ^^^^^^^^^^^^ use of undeclared type or module `futures_test`
[INFO] [stderr] 
[INFO] [stderr] error[E0432]: unresolved import `futures`
[INFO] [stderr]  --> benches/sync_mpsc.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 |     futures::{
[INFO] [stderr]   |     ^^^^^^^ use of undeclared type or module `futures`
[INFO] [stderr] 
[INFO] [stderr] error: cannot determine resolution for the macro `ready`
[INFO] [stderr]   --> benches/sync_mpsc.rs:93:9
[INFO] [stderr]    |
[INFO] [stderr] 93 |         ready!(tx.as_mut().poll_ready(cx)).unwrap();
[INFO] [stderr]    |         ^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: import resolution is stuck, try simplifying macro imports
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `mpsc`
[INFO] [stderr]   --> benches/sync_mpsc.rs:23:28
[INFO] [stderr]    |
[INFO] [stderr] 23 |         let (tx, mut rx) = mpsc::unbounded();
[INFO] [stderr]    |                            ^^^^ use of undeclared type or module `mpsc`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `Poll`
[INFO] [stderr]   --> benches/sync_mpsc.rs:30:24
[INFO] [stderr]    |
[INFO] [stderr] 30 |             assert_eq!(Poll::Pending, rx.poll_next_unpin(&mut cx));
[INFO] [stderr]    |                        ^^^^ use of undeclared type or module `Poll`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `UnboundedSender`
[INFO] [stderr]   --> benches/sync_mpsc.rs:32:13
[INFO] [stderr]    |
[INFO] [stderr] 32 |             UnboundedSender::unbounded_send(&tx, i).unwrap();
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^ use of undeclared type or module `UnboundedSender`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `Poll`
[INFO] [stderr]   --> benches/sync_mpsc.rs:35:24
[INFO] [stderr]    |
[INFO] [stderr] 35 |             assert_eq!(Poll::Ready(Some(i)), rx.poll_next_unpin(&mut cx));
[INFO] [stderr]    |                        ^^^^ use of undeclared type or module `Poll`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `mpsc`
[INFO] [stderr]   --> benches/sync_mpsc.rs:45:28
[INFO] [stderr]    |
[INFO] [stderr] 45 |         let (tx, mut rx) = mpsc::unbounded();
[INFO] [stderr]    |                            ^^^^ use of undeclared type or module `mpsc`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `Poll`
[INFO] [stderr]   --> benches/sync_mpsc.rs:52:28
[INFO] [stderr]    |
[INFO] [stderr] 52 |                 assert_eq!(Poll::Pending, rx.poll_next_unpin(&mut cx));
[INFO] [stderr]    |                            ^^^^ use of undeclared type or module `Poll`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `UnboundedSender`
[INFO] [stderr]   --> benches/sync_mpsc.rs:54:17
[INFO] [stderr]    |
[INFO] [stderr] 54 |                 UnboundedSender::unbounded_send(&tx[i], i).unwrap();
[INFO] [stderr]    |                 ^^^^^^^^^^^^^^^ use of undeclared type or module `UnboundedSender`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `Poll`
[INFO] [stderr]   --> benches/sync_mpsc.rs:56:28
[INFO] [stderr]    |
[INFO] [stderr] 56 |                 assert_eq!(Poll::Ready(Some(i)), rx.poll_next_unpin(&mut cx));
[INFO] [stderr]    |                            ^^^^ use of undeclared type or module `Poll`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `mpsc`
[INFO] [stderr]   --> benches/sync_mpsc.rs:66:28
[INFO] [stderr]    |
[INFO] [stderr] 66 |         let (tx, mut rx) = mpsc::unbounded();
[INFO] [stderr]    |                            ^^^^ use of undeclared type or module `mpsc`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `UnboundedSender`
[INFO] [stderr]   --> benches/sync_mpsc.rs:69:13
[INFO] [stderr]    |
[INFO] [stderr] 69 |             UnboundedSender::unbounded_send(&tx, i).expect("send");
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^ use of undeclared type or module `UnboundedSender`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `Poll`
[INFO] [stderr]   --> benches/sync_mpsc.rs:71:24
[INFO] [stderr]    |
[INFO] [stderr] 71 |             assert_eq!(Poll::Ready(Some(i)), rx.poll_next_unpin(&mut cx));
[INFO] [stderr]    |                        ^^^^ use of undeclared type or module `Poll`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `Poll`
[INFO] [stderr]   --> benches/sync_mpsc.rs:96:20
[INFO] [stderr]    |
[INFO] [stderr] 96 |         assert_eq!(Poll::Pending, tx.as_mut().poll_flush(cx));
[INFO] [stderr]    |                    ^^^^ use of undeclared type or module `Poll`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `Poll`
[INFO] [stderr]   --> benches/sync_mpsc.rs:97:9
[INFO] [stderr]    |
[INFO] [stderr] 97 |         Poll::Ready(Some(this.last))
[INFO] [stderr]    |         ^^^^ use of undeclared type or module `Poll`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `mpsc`
[INFO] [stderr]    --> benches/sync_mpsc.rs:106:28
[INFO] [stderr]     |
[INFO] [stderr] 106 |         let (tx, mut rx) = mpsc::channel(0);
[INFO] [stderr]     |                            ^^^^ use of undeclared type or module `mpsc`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `Poll`
[INFO] [stderr]    --> benches/sync_mpsc.rs:111:24
[INFO] [stderr]     |
[INFO] [stderr] 111 |             assert_eq!(Poll::Ready(Some(i + 1)), tx.poll_next_unpin(&mut cx));
[INFO] [stderr]     |                        ^^^^ use of undeclared type or module `Poll`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `Poll`
[INFO] [stderr]    --> benches/sync_mpsc.rs:112:24
[INFO] [stderr]     |
[INFO] [stderr] 112 |             assert_eq!(Poll::Pending, tx.poll_next_unpin(&mut cx));
[INFO] [stderr]     |                        ^^^^ use of undeclared type or module `Poll`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `Poll`
[INFO] [stderr]    --> benches/sync_mpsc.rs:113:24
[INFO] [stderr]     |
[INFO] [stderr] 113 |             assert_eq!(Poll::Ready(Some(i + 1)), rx.poll_next_unpin(&mut cx));
[INFO] [stderr]     |                        ^^^^ use of undeclared type or module `Poll`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `mpsc`
[INFO] [stderr]    --> benches/sync_mpsc.rs:124:28
[INFO] [stderr]     |
[INFO] [stderr] 124 |         let (tx, mut rx) = mpsc::channel(0);
[INFO] [stderr]     |                            ^^^^ use of undeclared type or module `mpsc`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `Poll`
[INFO] [stderr]    --> benches/sync_mpsc.rs:136:28
[INFO] [stderr]     |
[INFO] [stderr] 136 |                 assert_eq!(Poll::Ready(Some(i + 1)), tx[j].poll_next_unpin(&mut cx));
[INFO] [stderr]     |                            ^^^^ use of undeclared type or module `Poll`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `Poll`
[INFO] [stderr]    --> benches/sync_mpsc.rs:138:28
[INFO] [stderr]     |
[INFO] [stderr] 138 |                 assert_eq!(Poll::Pending, tx[j].poll_next_unpin(&mut cx));
[INFO] [stderr]     |                            ^^^^ use of undeclared type or module `Poll`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `Poll`
[INFO] [stderr]    --> benches/sync_mpsc.rs:140:28
[INFO] [stderr]     |
[INFO] [stderr] 140 |                 assert_eq!(Poll::Ready(Some(i + 1)), rx.poll_next_unpin(&mut cx));
[INFO] [stderr]     |                            ^^^^ use of undeclared type or module `Poll`
[INFO] [stderr] 
[INFO] [stderr] error[E0425]: cannot find function `noop_context` in this scope
[INFO] [stderr]   --> benches/sync_mpsc.rs:21:18
[INFO] [stderr]    |
[INFO] [stderr] 21 |     let mut cx = noop_context();
[INFO] [stderr]    |                  ^^^^^^^^^^^^ not found in this scope
[INFO] [stderr] 
[INFO] [stderr] error[E0425]: cannot find function `noop_context` in this scope
[INFO] [stderr]   --> benches/sync_mpsc.rs:43:18
[INFO] [stderr]    |
[INFO] [stderr] 43 |     let mut cx = noop_context();
[INFO] [stderr]    |                  ^^^^^^^^^^^^ not found in this scope
[INFO] [stderr] 
[INFO] [stderr] error[E0425]: cannot find function `noop_context` in this scope
[INFO] [stderr]   --> benches/sync_mpsc.rs:64:18
[INFO] [stderr]    |
[INFO] [stderr] 64 |     let mut cx = noop_context();
[INFO] [stderr]    |                  ^^^^^^^^^^^^ not found in this scope
[INFO] [stderr] 
[INFO] [stderr] error[E0412]: cannot find type `Sender` in this scope
[INFO] [stderr]   --> benches/sync_mpsc.rs:79:9
[INFO] [stderr]    |
[INFO] [stderr] 79 |       tx: Sender<u32>,
[INFO] [stderr]    |           ^^^^^^
[INFO] [stderr]    |
[INFO] [stderr] help: a trait with a similar name exists
[INFO] [stderr]    |
[INFO] [stderr] 79 |     tx: Send<u32>,
[INFO] [stderr]    |         ^^^^
[INFO] [stderr] help: possible candidates are found in other modules, you can import them into scope
[INFO] [stderr]    |
[INFO] [stderr] 4  | use futures_channel::mpsc::Sender;
[INFO] [stderr]    |
[INFO] [stderr] 4  | use futures_channel::oneshot::Sender;
[INFO] [stderr]    |
[INFO] [stderr] 4  | use std::sync::mpsc::Sender;
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] error[E0405]: cannot find trait `Stream` in this scope
[INFO] [stderr]   --> benches/sync_mpsc.rs:84:6
[INFO] [stderr]    |
[INFO] [stderr] 84 | impl Stream for TestSender {
[INFO] [stderr]    |      ^^^^^^ not found in this scope
[INFO] [stderr]    |
[INFO] [stderr] help: possible candidates are found in other modules, you can import them into scope
[INFO] [stderr]    |
[INFO] [stderr] 4  | use futures_core::Stream;
[INFO] [stderr]    |
[INFO] [stderr] 4  | use futures_core::stream::Stream;
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] error[E0412]: cannot find type `Context` in this scope
[INFO] [stderr]   --> benches/sync_mpsc.rs:87:53
[INFO] [stderr]    |
[INFO] [stderr] 87 |     fn poll_next(mut self: Pin<&mut Self>, cx: &mut Context<'_>)
[INFO] [stderr]    |                                                     ^^^^^^^ not found in this scope
[INFO] [stderr]    |
[INFO] [stderr] help: possible candidates are found in other modules, you can import them into scope
[INFO] [stderr]    |
[INFO] [stderr] 4  | use core::task::Context;
[INFO] [stderr]    |
[INFO] [stderr] 4  | use futures_core::core_reexport::task::Context;
[INFO] [stderr]    |
[INFO] [stderr] 4  | use futures_core::task::Context;
[INFO] [stderr]    |
[INFO] [stderr] 4  | use std::task::Context;
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] error[E0412]: cannot find type `Poll` in this scope
[INFO] [stderr]   --> benches/sync_mpsc.rs:88:12
[INFO] [stderr]    |
[INFO] [stderr] 88 |         -> Poll<Option<Self::Item>>
[INFO] [stderr]    |            ^^^^ not found in this scope
[INFO] [stderr]    |
[INFO] [stderr] help: possible candidates are found in other modules, you can import them into scope
[INFO] [stderr]    |
[INFO] [stderr] 4  | use core::task::Poll;
[INFO] [stderr]    |
[INFO] [stderr] 4  | use futures_core::Poll;
[INFO] [stderr]    |
[INFO] [stderr] 4  | use futures_core::core_reexport::task::Poll;
[INFO] [stderr]    |
[INFO] [stderr] 4  | use futures_core::task::Poll;
[INFO] [stderr]    |
[INFO] [stderr]      and 1 other candidate
[INFO] [stderr] 
[INFO] [stderr] error[E0425]: cannot find function `noop_context` in this scope
[INFO] [stderr]    --> benches/sync_mpsc.rs:104:18
[INFO] [stderr]     |
[INFO] [stderr] 104 |     let mut cx = noop_context();
[INFO] [stderr]     |                  ^^^^^^^^^^^^ not found in this scope
[INFO] [stderr] 
[INFO] [stderr] error[E0425]: cannot find function `noop_context` in this scope
[INFO] [stderr]    --> benches/sync_mpsc.rs:121:18
[INFO] [stderr]     |
[INFO] [stderr] 121 |     let mut cx = noop_context();
[INFO] [stderr]     |                  ^^^^^^^^^^^^ not found in this scope
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 34 previous errors
[INFO] [stderr] 
[INFO] [stderr] Some errors have detailed explanations: E0405, E0412, E0425, E0432, E0433.
[INFO] [stderr] For more information about an error, try `rustc --explain E0405`.
[INFO] [stderr] error: could not compile `futures-channel-preview`.
[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] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `futures`
[INFO] [stderr]  --> tests/mpsc-close.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use futures::channel::mpsc;
[INFO] [stderr]   |     ^^^^^^^ use of undeclared type or module `futures`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `futures`
[INFO] [stderr]  --> tests/mpsc-close.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 | use futures::executor::block_on;
[INFO] [stderr]   |     ^^^^^^^ use of undeclared type or module `futures`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `futures`
[INFO] [stderr]  --> tests/mpsc-close.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 | use futures::sink::SinkExt;
[INFO] [stderr]   |     ^^^^^^^ use of undeclared type or module `futures`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `futures`
[INFO] [stderr]  --> tests/mpsc-close.rs:4:5
[INFO] [stderr]   |
[INFO] [stderr] 4 | use futures::stream::StreamExt;
[INFO] [stderr]   |     ^^^^^^^ use of undeclared type or module `futures`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `mpsc`
[INFO] [stderr]  --> tests/mpsc-close.rs:9:34
[INFO] [stderr]   |
[INFO] [stderr] 9 |     let (mut sender, receiver) = mpsc::channel(1);
[INFO] [stderr]   |                                  ^^^^ use of undeclared type or module `mpsc`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `futures`
[INFO] [stderr]   --> tests/mpsc-close.rs:16:49
[INFO] [stderr]    |
[INFO] [stderr] 16 |     drop(block_on(receiver.take(3).for_each(|_| futures::future::ready(()))));
[INFO] [stderr]    |                                                 ^^^^^^^ use of undeclared type or module `futures`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `mpsc`
[INFO] [stderr]   --> tests/mpsc-close.rs:24:33
[INFO] [stderr]    |
[INFO] [stderr] 24 |         let (mut tx1, mut rx) = mpsc::channel(1);
[INFO] [stderr]    |                                 ^^^^ use of undeclared type or module `mpsc`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `futures`
[INFO] [stderr]  --> tests/mpsc.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use futures::channel::{mpsc, oneshot};
[INFO] [stderr]   |     ^^^^^^^ use of undeclared type or module `futures`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `mpsc`
[INFO] [stderr]   --> tests/mpsc-close.rs:46:33
[INFO] [stderr]    |
[INFO] [stderr] 46 |         let (mut tx1, mut rx) = mpsc::unbounded();
[INFO] [stderr]    |                                 ^^^^ use of undeclared type or module `mpsc`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `futures`
[INFO] [stderr]  --> tests/mpsc.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 | use futures::executor::{block_on, block_on_stream};
[INFO] [stderr]   |     ^^^^^^^ use of undeclared type or module `futures`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `futures`
[INFO] [stderr]  --> tests/mpsc.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 | use futures::future::{FutureExt, poll_fn};
[INFO] [stderr]   |     ^^^^^^^ use of undeclared type or module `futures`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `futures`
[INFO] [stderr]  --> tests/mpsc.rs:4:5
[INFO] [stderr]   |
[INFO] [stderr] 4 | use futures::stream::{Stream, StreamExt};
[INFO] [stderr]   |     ^^^^^^^ use of undeclared type or module `futures`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `futures`
[INFO] [stderr]  --> tests/mpsc.rs:5:5
[INFO] [stderr]   |
[INFO] [stderr] 5 | use futures::sink::{Sink, SinkExt};
[INFO] [stderr]   |     ^^^^^^^ use of undeclared type or module `futures`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `futures`
[INFO] [stderr]  --> tests/mpsc.rs:6:5
[INFO] [stderr]   |
[INFO] [stderr] 6 | use futures::task::{Context, Poll};
[INFO] [stderr]   |     ^^^^^^^ use of undeclared type or module `futures`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `mpsc`
[INFO] [stderr]   --> tests/mpsc-close.rs:71:33
[INFO] [stderr]    |
[INFO] [stderr] 71 |         let (mut tx1, mut rx) = mpsc::channel(1);
[INFO] [stderr]    |                                 ^^^^ use of undeclared type or module `mpsc`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `futures`
[INFO] [stderr]  --> tests/channel.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use futures::channel::mpsc;
[INFO] [stderr]   |     ^^^^^^^ use of undeclared type or module `futures`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `futures`
[INFO] [stderr]  --> tests/channel.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 | use futures::executor::block_on;
[INFO] [stderr]   |     ^^^^^^^ use of undeclared type or module `futures`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `futures`
[INFO] [stderr]  --> tests/channel.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 | use futures::future::poll_fn;
[INFO] [stderr]   |     ^^^^^^^ use of undeclared type or module `futures`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `futures`
[INFO] [stderr]  --> tests/channel.rs:4:5
[INFO] [stderr]   |
[INFO] [stderr] 4 | use futures::stream::StreamExt;
[INFO] [stderr]   |     ^^^^^^^ use of undeclared type or module `futures`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `futures`
[INFO] [stderr]  --> tests/channel.rs:5:5
[INFO] [stderr]   |
[INFO] [stderr] 5 | use futures::sink::SinkExt;
[INFO] [stderr]   |     ^^^^^^^ use of undeclared type or module `futures`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `mpsc`
[INFO] [stderr]   --> tests/channel.rs:11:20
[INFO] [stderr]    |
[INFO] [stderr] 11 |     let (tx, rx) = mpsc::channel(1);
[INFO] [stderr]    |                    ^^^^ use of undeclared type or module `mpsc`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `mpsc`
[INFO] [stderr]   --> tests/mpsc-close.rs:87:29
[INFO] [stderr]    |
[INFO] [stderr] 87 |         let (tx1, mut rx) = mpsc::unbounded();
[INFO] [stderr]    |                             ^^^^ use of undeclared type or module `mpsc`
[INFO] [stderr] 
[INFO] [stderr] error[E0425]: cannot find function `block_on` in this scope
[INFO] [stderr]   --> tests/mpsc-close.rs:12:28
[INFO] [stderr]    |
[INFO] [stderr] 12 |         while let Ok(()) = block_on(sender.send(42)) {}
[INFO] [stderr]    |                            ^^^^^^^^ not found in this scope
[INFO] [stderr] 
[INFO] [stderr] error[E0425]: cannot find function `block_on` in this scope
[INFO] [stderr]   --> tests/mpsc-close.rs:16:10
[INFO] [stderr]    |
[INFO] [stderr] 16 |     drop(block_on(receiver.take(3).for_each(|_| futures::future::ready(()))));
[INFO] [stderr]    |          ^^^^^^^^ not found in this scope
[INFO] [stderr] 
[INFO] [stderr] error[E0425]: cannot find function `block_on` in this scope
[INFO] [stderr]   --> tests/mpsc-close.rs:31:9
[INFO] [stderr]    |
[INFO] [stderr] 31 |         block_on(tx3.close()).unwrap();
[INFO] [stderr]    |         ^^^^^^^^ not found in this scope
[INFO] [stderr] 
[INFO] [stderr] error[E0425]: cannot find function `block_on` in this scope
[INFO] [stderr]   --> tests/mpsc-close.rs:37:9
[INFO] [stderr]    |
[INFO] [stderr] 37 |         block_on(tx4.send(5)).unwrap();
[INFO] [stderr]    |         ^^^^^^^^ not found in this scope
[INFO] [stderr] 
[INFO] [stderr] error[E0425]: cannot find function `block_on` in this scope
[INFO] [stderr]   --> tests/mpsc-close.rs:38:20
[INFO] [stderr]    |
[INFO] [stderr] 38 |         assert_eq!(block_on(rx.next()), Some(5));
[INFO] [stderr]    |                    ^^^^^^^^ not found in this scope
[INFO] [stderr] 
[INFO] [stderr] error[E0425]: cannot find function `block_on` in this scope
[INFO] [stderr]   --> tests/mpsc-close.rs:42:20
[INFO] [stderr]    |
[INFO] [stderr] 42 |         assert_eq!(block_on(rx.next()), None);
[INFO] [stderr]    |                    ^^^^^^^^ not found in this scope
[INFO] [stderr] 
[INFO] [stderr] error[E0425]: cannot find function `block_on` in this scope
[INFO] [stderr]   --> tests/mpsc-close.rs:53:9
[INFO] [stderr]    |
[INFO] [stderr] 53 |         block_on(tx3.close()).unwrap();
[INFO] [stderr]    |         ^^^^^^^^ not found in this scope
[INFO] [stderr] 
[INFO] [stderr] error[E0425]: cannot find function `block_on` in this scope
[INFO] [stderr]   --> tests/mpsc-close.rs:59:9
[INFO] [stderr]    |
[INFO] [stderr] 59 |         block_on(tx4.send(5)).unwrap();
[INFO] [stderr]    |         ^^^^^^^^ not found in this scope
[INFO] [stderr] 
[INFO] [stderr] error[E0425]: cannot find function `block_on` in this scope
[INFO] [stderr]   --> tests/mpsc-close.rs:60:20
[INFO] [stderr]    |
[INFO] [stderr] 60 |         assert_eq!(block_on(rx.next()), Some(5));
[INFO] [stderr]    |                    ^^^^^^^^ not found in this scope
[INFO] [stderr] 
[INFO] [stderr] error[E0425]: cannot find function `block_on` in this scope
[INFO] [stderr]   --> tests/mpsc-close.rs:64:20
[INFO] [stderr]    |
[INFO] [stderr] 64 |         assert_eq!(block_on(rx.next()), None);
[INFO] [stderr]    |                    ^^^^^^^^ not found in this scope
[INFO] [stderr] 
[INFO] [stderr] error[E0425]: cannot find function `block_on` in this scope
[INFO] [stderr]   --> tests/mpsc-close.rs:80:19
[INFO] [stderr]    |
[INFO] [stderr] 80 |         let err = block_on(tx2.send(5)).unwrap_err();
[INFO] [stderr]    |                   ^^^^^^^^ not found in this scope
[INFO] [stderr] 
[INFO] [stderr] error[E0425]: cannot find function `block_on` in this scope
[INFO] [stderr]   --> tests/mpsc-close.rs:83:20
[INFO] [stderr]    |
[INFO] [stderr] 83 |         assert_eq!(block_on(rx.next()), None);
[INFO] [stderr]    |                    ^^^^^^^^ not found in this scope
[INFO] [stderr] 
[INFO] [stderr] error[E0425]: cannot find function `block_on` in this scope
[INFO] [stderr]   --> tests/mpsc-close.rs:96:19
[INFO] [stderr]    |
[INFO] [stderr] 96 |         let err = block_on(tx2.send(5)).unwrap_err();
[INFO] [stderr]    |                   ^^^^^^^^ not found in this scope
[INFO] [stderr] 
[INFO] [stderr] error[E0425]: cannot find function `block_on` in this scope
[INFO] [stderr]   --> tests/mpsc-close.rs:99:20
[INFO] [stderr]    |
[INFO] [stderr] 99 |         assert_eq!(block_on(rx.next()), None);
[INFO] [stderr]    |                    ^^^^^^^^ not found in this scope
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `futures_test`
[INFO] [stderr]  --> tests/mpsc.rs:8:5
[INFO] [stderr]   |
[INFO] [stderr] 8 | use futures_test::task::{new_count_waker, noop_context};
[INFO] [stderr]   |     ^^^^^^^^^^^^ use of undeclared type or module `futures_test`
[INFO] [stderr] 
[INFO] [stderr] error[E0432]: unresolved import `futures`
[INFO] [stderr]  --> tests/mpsc.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 | use futures::pin_mut;
[INFO] [stderr]   |     ^^^^^^^ use of undeclared type or module `futures`
[INFO] [stderr] 
[INFO] [stderr] error: cannot determine resolution for the macro `pin_mut`
[INFO] [stderr]   --> tests/mpsc.rs:32:9
[INFO] [stderr]    |
[INFO] [stderr] 32 |         pin_mut!(tx, rx);
[INFO] [stderr]    |         ^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: import resolution is stuck, try simplifying macro imports
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `mpsc`
[INFO] [stderr]   --> tests/mpsc.rs:14:21
[INFO] [stderr]    |
[INFO] [stderr] 14 | impl AssertSend for mpsc::Sender<i32> {}
[INFO] [stderr]    |                     ^^^^ use of undeclared type or module `mpsc`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `mpsc`
[INFO] [stderr]   --> tests/mpsc.rs:15:21
[INFO] [stderr]    |
[INFO] [stderr] 15 | impl AssertSend for mpsc::Receiver<i32> {}
[INFO] [stderr]    |                     ^^^^ use of undeclared type or module `mpsc`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `mpsc`
[INFO] [stderr]   --> tests/mpsc.rs:19:24
[INFO] [stderr]    |
[INFO] [stderr] 19 |     let (mut tx, rx) = mpsc::channel::<i32>(16);
[INFO] [stderr]    |                        ^^^^ use of undeclared type or module `mpsc`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `mpsc`
[INFO] [stderr]   --> tests/mpsc.rs:31:24
[INFO] [stderr]    |
[INFO] [stderr] 31 |         let (tx, rx) = mpsc::channel::<i32>(0);
[INFO] [stderr]    |                        ^^^^ use of undeclared type or module `mpsc`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `Poll`
[INFO] [stderr]   --> tests/mpsc.rs:47:47
[INFO] [stderr]    |
[INFO] [stderr] 47 |         assert_eq!(rx.as_mut().poll_next(cx), Poll::Ready(Some(1)));
[INFO] [stderr]    |                                               ^^^^ use of undeclared type or module `Poll`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `Poll`
[INFO] [stderr]   --> tests/mpsc.rs:56:47
[INFO] [stderr]    |
[INFO] [stderr] 56 |         assert_eq!(rx.as_mut().poll_next(cx), Poll::Ready(Some(2)));
[INFO] [stderr]    |                                               ^^^^ use of undeclared type or module `Poll`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `Poll`
[INFO] [stderr]   --> tests/mpsc.rs:59:9
[INFO] [stderr]    |
[INFO] [stderr] 59 |         Poll::Ready(())
[INFO] [stderr]    |         ^^^^ use of undeclared type or module `Poll`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `mpsc`
[INFO] [stderr]   --> tests/mpsc.rs:65:25
[INFO] [stderr]    |
[INFO] [stderr] 65 |     let (mut tx1, rx) = mpsc::channel::<i32>(16);
[INFO] [stderr]    |                         ^^^^ use of undeclared type or module `mpsc`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `mpsc`
[INFO] [stderr]   --> tests/mpsc.rs:78:24
[INFO] [stderr]    |
[INFO] [stderr] 78 |     let (mut tx, rx) = mpsc::channel::<i32>(16);
[INFO] [stderr]    |                        ^^^^ use of undeclared type or module `mpsc`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `mpsc`
[INFO] [stderr]   --> tests/channel.rs:27:44
[INFO] [stderr]    |
[INFO] [stderr] 27 | async fn send_sequence(n: u32, mut sender: mpsc::Sender<u32>) {
[INFO] [stderr]    |                                            ^^^^ use of undeclared type or module `mpsc`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `mpsc`
[INFO] [stderr]   --> tests/channel.rs:35:24
[INFO] [stderr]    |
[INFO] [stderr] 35 |     let (tx, mut rx) = mpsc::channel::<u32>(1);
[INFO] [stderr]    |                        ^^^^ use of undeclared type or module `mpsc`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `mpsc`
[INFO] [stderr]   --> tests/mpsc.rs:92:24
[INFO] [stderr]    |
[INFO] [stderr] 92 |     let (mut tx, rx) = mpsc::channel::<i32>(0);
[INFO] [stderr]    |                        ^^^^ use of undeclared type or module `mpsc`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `mpsc`
[INFO] [stderr]   --> tests/channel.rs:45:24
[INFO] [stderr]    |
[INFO] [stderr] 45 |     let (mut tx, rx) = mpsc::channel::<u32>(1);
[INFO] [stderr]    |                        ^^^^ use of undeclared type or module `mpsc`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `mpsc`
[INFO] [stderr]    --> tests/mpsc.rs:107:28
[INFO] [stderr]     |
[INFO] [stderr] 107 |     let (mut tx, mut rx) = mpsc::channel::<i32>(10);
[INFO] [stderr]     |                            ^^^^ use of undeclared type or module `mpsc`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `mpsc`
[INFO] [stderr]   --> tests/channel.rs:54:24
[INFO] [stderr]    |
[INFO] [stderr] 54 |     let (mut tx, rx) = mpsc::channel(1);
[INFO] [stderr]    |                        ^^^^ use of undeclared type or module `mpsc`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `Poll`
[INFO] [stderr]    --> tests/mpsc.rs:113:44
[INFO] [stderr]     |
[INFO] [stderr] 113 |         assert_eq!(rx.poll_next_unpin(cx), Poll::Ready(None));
[INFO] [stderr]     |                                            ^^^^ use of undeclared type or module `Poll`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `Poll`
[INFO] [stderr]    --> tests/mpsc.rs:115:13
[INFO] [stderr]     |
[INFO] [stderr] 115 |             Poll::Pending | Poll::Ready(Ok(_)) => panic!(),
[INFO] [stderr]     |             ^^^^ use of undeclared type or module `Poll`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `Poll`
[INFO] [stderr]    --> tests/mpsc.rs:115:29
[INFO] [stderr]     |
[INFO] [stderr] 115 |             Poll::Pending | Poll::Ready(Ok(_)) => panic!(),
[INFO] [stderr]     |                             ^^^^ use of undeclared type or module `Poll`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `Poll`
[INFO] [stderr]    --> tests/mpsc.rs:116:13
[INFO] [stderr]     |
[INFO] [stderr] 116 |             Poll::Ready(Err(e)) => assert!(e.is_disconnected()),
[INFO] [stderr]     |             ^^^^ use of undeclared type or module `Poll`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `Poll`
[INFO] [stderr]    --> tests/mpsc.rs:121:9
[INFO] [stderr]     |
[INFO] [stderr] 121 |         Poll::Ready(())
[INFO] [stderr]     |         ^^^^ use of undeclared type or module `Poll`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `mpsc`
[INFO] [stderr]    --> tests/mpsc.rs:127:23
[INFO] [stderr]     |
[INFO] [stderr] 127 |     let (_, mut rx) = mpsc::channel::<i32>(10);
[INFO] [stderr]     |                       ^^^^ use of undeclared type or module `mpsc`
[INFO] [stderr] 
[INFO] [stderr] error[E0425]: cannot find function `block_on` in this scope
[INFO] [stderr]   --> tests/channel.rs:15:9
[INFO] [stderr]    |
[INFO] [stderr] 15 |         block_on(send_sequence(amt, tx))
[INFO] [stderr]    |         ^^^^^^^^ not found in this scope
[INFO] [stderr] 
[INFO] [stderr] error[E0425]: cannot find function `block_on` in this scope
[INFO] [stderr]   --> tests/channel.rs:17:24
[INFO] [stderr]    |
[INFO] [stderr] 17 |     let list: Vec<_> = block_on(rx.collect());
[INFO] [stderr]    |                        ^^^^^^^^ not found in this scope
[INFO] [stderr] 
[INFO] [stderr] error[E0425]: cannot find function `poll_fn` in this scope
[INFO] [stderr]   --> tests/channel.rs:37:13
[INFO] [stderr]    |
[INFO] [stderr] 37 |     let f = poll_fn(|cx| {
[INFO] [stderr]    |             ^^^^^^^ not found in this scope
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `Poll`
[INFO] [stderr]    --> tests/mpsc.rs:131:44
[INFO] [stderr]     |
[INFO] [stderr] 131 |         assert_eq!(rx.poll_next_unpin(cx), Poll::Ready(None));
[INFO] [stderr]     |                                            ^^^^ use of undeclared type or module `Poll`
[INFO] [stderr] 
[INFO] [stderr] error[E0425]: cannot find function `block_on` in this scope
[INFO] [stderr]   --> tests/channel.rs:40:16
[INFO] [stderr]    |
[INFO] [stderr] 40 |     assert_eq!(block_on(f), None)
[INFO] [stderr]    |                ^^^^^^^^ not found in this scope
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `Poll`
[INFO] [stderr]    --> tests/mpsc.rs:132:9
[INFO] [stderr]     |
[INFO] [stderr] 132 |         Poll::Ready(())
[INFO] [stderr]     |         ^^^^ use of undeclared type or module `Poll`
[INFO] [stderr] 
[INFO] [stderr] error[E0425]: cannot find function `block_on` in this scope
[INFO] [stderr]   --> tests/channel.rs:46:5
[INFO] [stderr]    |
[INFO] [stderr] 46 |     block_on(tx.send(1)).unwrap();
[INFO] [stderr]    |     ^^^^^^^^ not found in this scope
[INFO] [stderr] 
[INFO] [stderr] error[E0425]: cannot find function `block_on` in this scope
[INFO] [stderr]   --> tests/channel.rs:48:13
[INFO] [stderr]    |
[INFO] [stderr] 48 |     assert!(block_on(tx.send(1)).is_err());
[INFO] [stderr]    |             ^^^^^^^^ not found in this scope
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `mpsc`
[INFO] [stderr]    --> tests/mpsc.rs:207:20
[INFO] [stderr]     |
[INFO] [stderr] 207 |     let (tx, rx) = mpsc::unbounded::<i32>();
[INFO] [stderr]     |                    ^^^^ use of undeclared type or module `mpsc`
[INFO] [stderr] 
[INFO] [stderr] error[E0425]: cannot find function `block_on` in this scope
[INFO] [stderr]   --> tests/channel.rs:64:5
[INFO] [stderr]    |
[INFO] [stderr] 64 |     block_on(tx.send(A)).unwrap();
[INFO] [stderr]    |     ^^^^^^^^ not found in this scope
[INFO] [stderr] 
[INFO] [stderr] error[E0425]: cannot find function `block_on` in this scope
[INFO] [stderr]   --> tests/channel.rs:68:13
[INFO] [stderr]    |
[INFO] [stderr] 68 |     assert!(block_on(tx.send(A)).is_err());
[INFO] [stderr]    |             ^^^^^^^^ not found in this scope
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `mpsc`
[INFO] [stderr]    --> tests/mpsc.rs:236:20
[INFO] [stderr]     |
[INFO] [stderr] 236 |     let (tx, rx) = mpsc::channel::<i32>(0);
[INFO] [stderr]     |                    ^^^^ use of undeclared type or module `mpsc`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `mpsc`
[INFO] [stderr]    --> tests/mpsc.rs:266:24
[INFO] [stderr]     |
[INFO] [stderr] 266 |     let (mut tx, rx) = mpsc::channel::<usize>(0);
[INFO] [stderr]     |                        ^^^^ use of undeclared type or module `mpsc`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `Poll`
[INFO] [stderr]    --> tests/mpsc.rs:296:29
[INFO] [stderr]     |
[INFO] [stderr] 296 | ...                   Poll::Ready(Some(_)) => {
[INFO] [stderr]     |                       ^^^^ use of undeclared type or module `Poll`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `Poll`
[INFO] [stderr]    --> tests/mpsc.rs:299:29
[INFO] [stderr]     |
[INFO] [stderr] 299 | ...                   Poll::Ready(None) => {
[INFO] [stderr]     |                       ^^^^ use of undeclared type or module `Poll`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `Poll`
[INFO] [stderr]    --> tests/mpsc.rs:303:29
[INFO] [stderr]     |
[INFO] [stderr] 303 | ...                   Poll::Pending => {},
[INFO] [stderr]     |                       ^^^^ use of undeclared type or module `Poll`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `mpsc`
[INFO] [stderr]    --> tests/mpsc.rs:333:24
[INFO] [stderr]     |
[INFO] [stderr] 333 |         let (tx, rx) = mpsc::channel(1);
[INFO] [stderr]     |                        ^^^^ use of undeclared type or module `mpsc`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `mpsc`
[INFO] [stderr]    --> tests/mpsc.rs:346:37
[INFO] [stderr]     |
[INFO] [stderr] 346 | async fn send_one_two_three(mut tx: mpsc::Sender<i32>) {
[INFO] [stderr]     |                                     ^^^^ use of undeclared type or module `mpsc`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `mpsc`
[INFO] [stderr]    --> tests/mpsc.rs:355:20
[INFO] [stderr]     |
[INFO] [stderr] 355 |     let (tx, rx) = mpsc::unbounded();
[INFO] [stderr]     |                    ^^^^ use of undeclared type or module `mpsc`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `mpsc`
[INFO] [stderr]    --> tests/mpsc.rs:392:47
[INFO] [stderr]     |
[INFO] [stderr] 392 | async fn stress_poll_ready_sender(mut sender: mpsc::Sender<u32>, count: u32) {
[INFO] [stderr]     |                                               ^^^^ use of undeclared type or module `mpsc`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `mpsc`
[INFO] [stderr]    --> tests/mpsc.rs:406:24
[INFO] [stderr]     |
[INFO] [stderr] 406 |         let (tx, rx) = mpsc::channel(capacity);
[INFO] [stderr]     |                        ^^^^ use of undeclared type or module `mpsc`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `mpsc`
[INFO] [stderr]    --> tests/mpsc.rs:433:24
[INFO] [stderr]     |
[INFO] [stderr] 433 |     let (mut tx, rx) = mpsc::channel(0);
[INFO] [stderr]     |                        ^^^^ use of undeclared type or module `mpsc`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `mpsc`
[INFO] [stderr]    --> tests/mpsc.rs:455:24
[INFO] [stderr]     |
[INFO] [stderr] 455 |     let (mut tx, rx) = mpsc::channel(0);
[INFO] [stderr]     |                        ^^^^ use of undeclared type or module `mpsc`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `oneshot`
[INFO] [stderr]    --> tests/mpsc.rs:460:30
[INFO] [stderr]     |
[INFO] [stderr] 460 |     let (readytx, readyrx) = oneshot::channel::<()>();
[INFO] [stderr]     |                              ^^^^^^^ use of undeclared type or module `oneshot`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `Poll`
[INFO] [stderr]    --> tests/mpsc.rs:465:13
[INFO] [stderr]     |
[INFO] [stderr] 465 |             Poll::Ready(())
[INFO] [stderr]     |             ^^^^ use of undeclared type or module `Poll`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `mpsc`
[INFO] [stderr]    --> tests/mpsc.rs:482:24
[INFO] [stderr]     |
[INFO] [stderr] 482 |     let (mut tx, rx) = mpsc::channel(0);
[INFO] [stderr]     |                        ^^^^ use of undeclared type or module `mpsc`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `mpsc`
[INFO] [stderr]    --> tests/mpsc.rs:501:28
[INFO] [stderr]     |
[INFO] [stderr] 501 |     let (mut tx, mut rx) = mpsc::channel(1);
[INFO] [stderr]     |                            ^^^^ use of undeclared type or module `mpsc`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `mpsc`
[INFO] [stderr]    --> tests/mpsc.rs:515:25
[INFO] [stderr]     |
[INFO] [stderr] 515 |     let (mut txa1, _) = mpsc::channel::<i32>(1);
[INFO] [stderr]     |                         ^^^^ use of undeclared type or module `mpsc`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `mpsc`
[INFO] [stderr]    --> tests/mpsc.rs:518:25
[INFO] [stderr]     |
[INFO] [stderr] 518 |     let (mut txb1, _) = mpsc::channel::<i32>(1);
[INFO] [stderr]     |                         ^^^^ use of undeclared type or module `mpsc`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `Context`
[INFO] [stderr]    --> tests/mpsc.rs:535:18
[INFO] [stderr]     |
[INFO] [stderr] 535 |     let mut cx = Context::from_waker(&waker);
[INFO] [stderr]     |                  ^^^^^^^ use of undeclared type or module `Context`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `mpsc`
[INFO] [stderr]    --> tests/mpsc.rs:537:28
[INFO] [stderr]     |
[INFO] [stderr] 537 |     let (mut tx, mut rx) = mpsc::channel(1);
[INFO] [stderr]     |                            ^^^^ use of undeclared type or module `mpsc`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `Poll`
[INFO] [stderr]    --> tests/mpsc.rs:541:42
[INFO] [stderr]     |
[INFO] [stderr] 541 |     assert_eq!(task.poll_unpin(&mut cx), Poll::Pending);
[INFO] [stderr]     |                                          ^^^^ use of undeclared type or module `Poll`
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 24 previous errors
[INFO] [stderr] 
[INFO] [stderr] Some errors have detailed explanations: E0425, E0433.
[INFO] [stderr] For more information about an error, try `rustc --explain E0425`.
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `Poll`
[INFO] [stderr]    --> tests/mpsc.rs:547:42
[INFO] [stderr]     |
[INFO] [stderr] 547 |     assert_eq!(task.poll_unpin(&mut cx), Poll::Ready(Ok(())));
[INFO] [stderr]     |                                          ^^^^ use of undeclared type or module `Poll`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `Context`
[INFO] [stderr]    --> tests/mpsc.rs:556:18
[INFO] [stderr]     |
[INFO] [stderr] 556 |     let mut cx = Context::from_waker(&waker);
[INFO] [stderr]     |                  ^^^^^^^ use of undeclared type or module `Context`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `mpsc`
[INFO] [stderr]    --> tests/mpsc.rs:558:29
[INFO] [stderr]     |
[INFO] [stderr] 558 |     let (mut tx1, mut rx) = mpsc::channel(1);
[INFO] [stderr]     |                             ^^^^ use of undeclared type or module `mpsc`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `Poll`
[INFO] [stderr]    --> tests/mpsc.rs:563:42
[INFO] [stderr]     |
[INFO] [stderr] 563 |     assert_eq!(task.poll_unpin(&mut cx), Poll::Pending);
[INFO] [stderr]     |                                          ^^^^ use of undeclared type or module `Poll`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `Poll`
[INFO] [stderr]    --> tests/mpsc.rs:569:42
[INFO] [stderr]     |
[INFO] [stderr] 569 |     assert_eq!(task.poll_unpin(&mut cx), Poll::Ready(Ok(())));
[INFO] [stderr]     |                                          ^^^^ use of undeclared type or module `Poll`
[INFO] [stderr] 
[INFO] [stderr] error[E0425]: cannot find function `block_on` in this scope
[INFO] [stderr]   --> tests/mpsc.rs:21:5
[INFO] [stderr]    |
[INFO] [stderr] 21 |     block_on(tx.send(1)).unwrap();
[INFO] [stderr]    |     ^^^^^^^^ not found in this scope
[INFO] [stderr] 
[INFO] [stderr] error[E0425]: cannot find function `block_on` in this scope
[INFO] [stderr]   --> tests/mpsc.rs:23:21
[INFO] [stderr]    |
[INFO] [stderr] 23 |     let v: Vec<_> = block_on(rx.collect());
[INFO] [stderr]    |                     ^^^^^^^^ not found in this scope
[INFO] [stderr] 
[INFO] [stderr] error[E0425]: cannot find function `block_on` in this scope
[INFO] [stderr]   --> tests/mpsc.rs:30:5
[INFO] [stderr]    |
[INFO] [stderr] 30 |     block_on(poll_fn(move |cx| {
[INFO] [stderr]    |     ^^^^^^^^ not found in this scope
[INFO] [stderr] 
[INFO] [stderr] error[E0425]: cannot find function `poll_fn` in this scope
[INFO] [stderr]   --> tests/mpsc.rs:30:14
[INFO] [stderr]    |
[INFO] [stderr] 30 |     block_on(poll_fn(move |cx| {
[INFO] [stderr]    |              ^^^^^^^ not found in this scope
[INFO] [stderr] 
[INFO] [stderr] error[E0425]: cannot find function `block_on_stream` in this scope
[INFO] [stderr]   --> tests/mpsc.rs:66:18
[INFO] [stderr]    |
[INFO] [stderr] 66 |     let mut rx = block_on_stream(rx);
[INFO] [stderr]    |                  ^^^^^^^^^^^^^^^ not found in this scope
[INFO] [stderr] 
[INFO] [stderr] error[E0425]: cannot find function `block_on` in this scope
[INFO] [stderr]   --> tests/mpsc.rs:69:5
[INFO] [stderr]    |
[INFO] [stderr] 69 |     block_on(tx1.send(1)).unwrap();
[INFO] [stderr]    |     ^^^^^^^^ not found in this scope
[INFO] [stderr] 
[INFO] [stderr] error[E0425]: cannot find function `block_on` in this scope
[INFO] [stderr]   --> tests/mpsc.rs:72:5
[INFO] [stderr]    |
[INFO] [stderr] 72 |     block_on(tx2.send(2)).unwrap();
[INFO] [stderr]    |     ^^^^^^^^ not found in this scope
[INFO] [stderr] 
[INFO] [stderr] error[E0425]: cannot find function `block_on` in this scope
[INFO] [stderr]   --> tests/mpsc.rs:81:9
[INFO] [stderr]    |
[INFO] [stderr] 81 |         block_on(tx.send(1)).unwrap();
[INFO] [stderr]    |         ^^^^^^^^ not found in this scope
[INFO] [stderr] 
[INFO] [stderr] error[E0425]: cannot find function `block_on` in this scope
[INFO] [stderr]   --> tests/mpsc.rs:84:21
[INFO] [stderr]    |
[INFO] [stderr] 84 |     let v: Vec<_> = block_on(rx.take(1).collect());
[INFO] [stderr]    |                     ^^^^^^^^ not found in this scope
[INFO] [stderr] 
[INFO] [stderr] error[E0425]: cannot find function `block_on` in this scope
[INFO] [stderr]   --> tests/mpsc.rs:95:9
[INFO] [stderr]    |
[INFO] [stderr] 95 |         block_on(tx.send(1)).unwrap();
[INFO] [stderr]    |         ^^^^^^^^ not found in this scope
[INFO] [stderr] 
[INFO] [stderr] error[E0425]: cannot find function `block_on` in this scope
[INFO] [stderr]   --> tests/mpsc.rs:96:9
[INFO] [stderr]    |
[INFO] [stderr] 96 |         block_on(tx.send(2)).unwrap();
[INFO] [stderr]    |         ^^^^^^^^ not found in this scope
[INFO] [stderr] 
[INFO] [stderr] error[E0425]: cannot find function `block_on` in this scope
[INFO] [stderr]   --> tests/mpsc.rs:99:21
[INFO] [stderr]    |
[INFO] [stderr] 99 |     let v: Vec<_> = block_on(rx.collect());
[INFO] [stderr]    |                     ^^^^^^^^ not found in this scope
[INFO] [stderr] 
[INFO] [stderr] error[E0425]: cannot find function `block_on` in this scope
[INFO] [stderr]    --> tests/mpsc.rs:110:5
[INFO] [stderr]     |
[INFO] [stderr] 110 |     block_on(poll_fn(move |cx| {
[INFO] [stderr]     |     ^^^^^^^^ not found in this scope
[INFO] [stderr] 
[INFO] [stderr] error[E0425]: cannot find function `poll_fn` in this scope
[INFO] [stderr]    --> tests/mpsc.rs:110:14
[INFO] [stderr]     |
[INFO] [stderr] 110 |     block_on(poll_fn(move |cx| {
[INFO] [stderr]     |              ^^^^^^^ not found in this scope
[INFO] [stderr] 
[INFO] [stderr] error[E0425]: cannot find function `block_on` in this scope
[INFO] [stderr]    --> tests/mpsc.rs:130:5
[INFO] [stderr]     |
[INFO] [stderr] 130 |     block_on(poll_fn(move |cx| {
[INFO] [stderr]     |     ^^^^^^^^ not found in this scope
[INFO] [stderr] 
[INFO] [stderr] error[E0425]: cannot find function `poll_fn` in this scope
[INFO] [stderr]    --> tests/mpsc.rs:130:14
[INFO] [stderr]     |
[INFO] [stderr] 130 |     block_on(poll_fn(move |cx| {
[INFO] [stderr]     |              ^^^^^^^ not found in this scope
[INFO] [stderr] 
[INFO] [stderr] error[E0425]: cannot find function `block_on` in this scope
[INFO] [stderr]    --> tests/mpsc.rs:210:30
[INFO] [stderr]     |
[INFO] [stderr] 210 |         let result: Vec<_> = block_on(rx.collect());
[INFO] [stderr]     |                              ^^^^^^^^ not found in this scope
[INFO] [stderr] 
[INFO] [stderr] error[E0425]: cannot find function `block_on` in this scope
[INFO] [stderr]    --> tests/mpsc.rs:239:30
[INFO] [stderr]     |
[INFO] [stderr] 239 |         let result: Vec<_> = block_on(rx.collect());
[INFO] [stderr]     |                              ^^^^^^^^ not found in this scope
[INFO] [stderr] 
[INFO] [stderr] error[E0425]: cannot find function `block_on` in this scope
[INFO] [stderr]    --> tests/mpsc.rs:251:17
[INFO] [stderr]     |
[INFO] [stderr] 251 |                 block_on(tx.send(1)).unwrap();
[INFO] [stderr]     |                 ^^^^^^^^ not found in this scope
[INFO] [stderr] 
[INFO] [stderr] error[E0425]: cannot find function `block_on` in this scope
[INFO] [stderr]    --> tests/mpsc.rs:284:36
[INFO] [stderr]     |
[INFO] [stderr] 284 |                         let item = block_on(rx.next());
[INFO] [stderr]     |                                    ^^^^^^^^ not found in this scope
[INFO] [stderr] 
[INFO] [stderr] error[E0425]: cannot find function `noop_context` in this scope
[INFO] [stderr]    --> tests/mpsc.rs:295:55
[INFO] [stderr]     |
[INFO] [stderr] 295 |                         match rx.poll_next_unpin(&mut noop_context()) {
[INFO] [stderr]     |                                                       ^^^^^^^^^^^^ not found in this scope
[INFO] [stderr] 
[INFO] [stderr] error[E0425]: cannot find function `block_on` in this scope
[INFO] [stderr]    --> tests/mpsc.rs:317:9
[INFO] [stderr]     |
[INFO] [stderr] 317 |         block_on(tx.send(i)).unwrap();
[INFO] [stderr]     |         ^^^^^^^^ not found in this scope
[INFO] [stderr] 
[INFO] [stderr] error[E0405]: cannot find trait `Stream` in this scope
[INFO] [stderr]    --> tests/mpsc.rs:332:23
[INFO] [stderr]     |
[INFO] [stderr] 332 |     fn list() -> impl Stream<Item=i32> {
[INFO] [stderr]     |                       ^^^^^^ not found in this scope
[INFO] [stderr]     |
[INFO] [stderr] help: possible candidates are found in other modules, you can import them into scope
[INFO] [stderr]     |
[INFO] [stderr] 1   | use futures_core::Stream;
[INFO] [stderr]     |
[INFO] [stderr] 1   | use futures_core::stream::Stream;
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] error[E0425]: cannot find function `block_on` in this scope
[INFO] [stderr]    --> tests/mpsc.rs:335:13
[INFO] [stderr]     |
[INFO] [stderr] 335 |             block_on(send_one_two_three(tx));
[INFO] [stderr]     |             ^^^^^^^^ not found in this scope
[INFO] [stderr] 
[INFO] [stderr] error[E0425]: cannot find function `block_on` in this scope
[INFO] [stderr]    --> tests/mpsc.rs:341:25
[INFO] [stderr]     |
[INFO] [stderr] 341 |         let v: Vec<_> = block_on(list().collect());
[INFO] [stderr]     |                         ^^^^^^^^ not found in this scope
[INFO] [stderr] 
[INFO] [stderr] error[E0425]: cannot find function `block_on_stream` in this scope
[INFO] [stderr]    --> tests/mpsc.rs:356:18
[INFO] [stderr]     |
[INFO] [stderr] 356 |     let mut rx = block_on_stream(rx);
[INFO] [stderr]     |                  ^^^^^^^^^^^^^^^ not found in this scope
[INFO] [stderr] 
[INFO] [stderr] error[E0425]: cannot find function `block_on` in this scope
[INFO] [stderr]    --> tests/mpsc.rs:411:17
[INFO] [stderr]     |
[INFO] [stderr] 411 |                 block_on(stress_poll_ready_sender(sender, AMT))
[INFO] [stderr]     |                 ^^^^^^^^ not found in this scope
[INFO] [stderr] 
[INFO] [stderr] error[E0425]: cannot find function `block_on` in this scope
[INFO] [stderr]    --> tests/mpsc.rs:416:30
[INFO] [stderr]     |
[INFO] [stderr] 416 |         let result: Vec<_> = block_on(rx.collect());
[INFO] [stderr]     |                              ^^^^^^^^ not found in this scope
[INFO] [stderr] 
[INFO] [stderr] error[E0425]: cannot find function `block_on` in this scope
[INFO] [stderr]    --> tests/mpsc.rs:445:26
[INFO] [stderr]     |
[INFO] [stderr] 445 |     let result: Vec<_> = block_on(rx.collect());
[INFO] [stderr]     |                          ^^^^^^^^ not found in this scope
[INFO] [stderr] 
[INFO] [stderr] error[E0425]: cannot find function `block_on_stream` in this scope
[INFO] [stderr]    --> tests/mpsc.rs:456:18
[INFO] [stderr]     |
[INFO] [stderr] 456 |     let mut rx = block_on_stream(rx);
[INFO] [stderr]     |                  ^^^^^^^^^^^^^^^ not found in this scope
[INFO] [stderr] 
[INFO] [stderr] error[E0425]: cannot find function `block_on` in this scope
[INFO] [stderr]    --> tests/mpsc.rs:463:9
[INFO] [stderr]     |
[INFO] [stderr] 463 |         block_on(poll_fn(|cx| {
[INFO] [stderr]     |         ^^^^^^^^ not found in this scope
[INFO] [stderr] 
[INFO] [stderr] error[E0425]: cannot find function `poll_fn` in this scope
[INFO] [stderr]    --> tests/mpsc.rs:463:18
[INFO] [stderr]     |
[INFO] [stderr] 463 |         block_on(poll_fn(|cx| {
[INFO] [stderr]     |                  ^^^^^^^ not found in this scope
[INFO] [stderr] 
[INFO] [stderr] error: could not compile `futures-channel-preview`.
[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] [stderr] error[E0425]: cannot find function `block_on` in this scope
[INFO] [stderr]    --> tests/mpsc.rs:469:9
[INFO] [stderr]     |
[INFO] [stderr] 469 |         block_on(tx.send("goodbye")).unwrap();
[INFO] [stderr]     |         ^^^^^^^^ not found in this scope
[INFO] [stderr] 
[INFO] [stderr] error[E0425]: cannot find function `block_on` in this scope
[INFO] [stderr]    --> tests/mpsc.rs:472:10
[INFO] [stderr]     |
[INFO] [stderr] 472 |     drop(block_on(readyrx));
[INFO] [stderr]     |          ^^^^^^^^ not found in this scope
[INFO] [stderr] 
[INFO] [stderr] error[E0425]: cannot find function `block_on_stream` in this scope
[INFO] [stderr]    --> tests/mpsc.rs:483:18
[INFO] [stderr]     |
[INFO] [stderr] 483 |     let mut rx = block_on_stream(rx);
[INFO] [stderr]     |                  ^^^^^^^^^^^^^^^ not found in this scope
[INFO] [stderr] 
[INFO] [stderr] error[E0425]: cannot find function `new_count_waker` in this scope
[INFO] [stderr]    --> tests/mpsc.rs:534:28
[INFO] [stderr]     |
[INFO] [stderr] 534 |     let (waker, counter) = new_count_waker();
[INFO] [stderr]     |                            ^^^^^^^^^^^^^^^ not found in this scope
[INFO] [stderr] 
[INFO] [stderr] error[E0425]: cannot find function `block_on` in this scope
[INFO] [stderr]    --> tests/mpsc.rs:538:5
[INFO] [stderr]     |
[INFO] [stderr] 538 |     block_on(tx.send(1)).unwrap();
[INFO] [stderr]     |     ^^^^^^^^ not found in this scope
[INFO] [stderr] 
[INFO] [stderr] error[E0425]: cannot find function `block_on` in this scope
[INFO] [stderr]    --> tests/mpsc.rs:544:16
[INFO] [stderr]     |
[INFO] [stderr] 544 |     let item = block_on(rx.next()).unwrap();
[INFO] [stderr]     |                ^^^^^^^^ not found in this scope
[INFO] [stderr] 
[INFO] [stderr] error[E0425]: cannot find function `block_on` in this scope
[INFO] [stderr]    --> tests/mpsc.rs:549:16
[INFO] [stderr]     |
[INFO] [stderr] 549 |     let item = block_on(rx.next()).unwrap();
[INFO] [stderr]     |                ^^^^^^^^ not found in this scope
[INFO] [stderr] 
[INFO] [stderr] error[E0425]: cannot find function `new_count_waker` in this scope
[INFO] [stderr]    --> tests/mpsc.rs:555:28
[INFO] [stderr]     |
[INFO] [stderr] 555 |     let (waker, counter) = new_count_waker();
[INFO] [stderr]     |                            ^^^^^^^^^^^^^^^ not found in this scope
[INFO] [stderr] 
[INFO] [stderr] error[E0425]: cannot find function `block_on` in this scope
[INFO] [stderr]    --> tests/mpsc.rs:560:5
[INFO] [stderr]     |
[INFO] [stderr] 560 |     block_on(tx1.send(1)).unwrap();
[INFO] [stderr]     |     ^^^^^^^^ not found in this scope
[INFO] [stderr] 
[INFO] [stderr] error[E0425]: cannot find function `block_on` in this scope
[INFO] [stderr]    --> tests/mpsc.rs:566:16
[INFO] [stderr]     |
[INFO] [stderr] 566 |     let item = block_on(rx.next()).unwrap();
[INFO] [stderr]     |                ^^^^^^^^ not found in this scope
[INFO] [stderr] 
[INFO] [stderr] error[E0425]: cannot find function `block_on` in this scope
[INFO] [stderr]    --> tests/mpsc.rs:571:16
[INFO] [stderr]     |
[INFO] [stderr] 571 |     let item = block_on(rx.next()).unwrap();
[INFO] [stderr]     |                ^^^^^^^^ not found in this scope
[INFO] [stderr] 
[INFO] [stderr] error[E0698]: type inside `async fn` body must be known in this context
[INFO] [stderr]    --> tests/mpsc.rs:347:14
[INFO] [stderr]     |
[INFO] [stderr] 347 |     for i in 1..=3 {
[INFO] [stderr]     |              ^ cannot infer type for type `{integer}`
[INFO] [stderr]     |
[INFO] [stderr] note: the type is part of the `async fn` body because of this `await`
[INFO] [stderr]    --> tests/mpsc.rs:348:9
[INFO] [stderr]     |
[INFO] [stderr] 348 |         tx.send(i).await.unwrap();
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 18 previous errors
[INFO] [stderr] 
[INFO] [stderr] Some errors have detailed explanations: E0425, E0433.
[INFO] [stderr] For more information about an error, try `rustc --explain E0425`.
[INFO] [stderr] error[E0698]: type inside `async fn` body must be known in this context
[INFO] [stderr]    --> tests/mpsc.rs:347:18
[INFO] [stderr]     |
[INFO] [stderr] 347 |     for i in 1..=3 {
[INFO] [stderr]     |                  ^ cannot infer type for type `{integer}`
[INFO] [stderr]     |
[INFO] [stderr] note: the type is part of the `async fn` body because of this `await`
[INFO] [stderr]    --> tests/mpsc.rs:348:9
[INFO] [stderr]     |
[INFO] [stderr] 348 |         tx.send(i).await.unwrap();
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error[E0698]: type inside `async fn` body must be known in this context
[INFO] [stderr]    --> tests/mpsc.rs:347:14
[INFO] [stderr]     |
[INFO] [stderr] 347 |     for i in 1..=3 {
[INFO] [stderr]     |              ^^^^^ cannot infer type for type `{integer}`
[INFO] [stderr]     |
[INFO] [stderr] note: the type is part of the `async fn` body because of this `await`
[INFO] [stderr]    --> tests/mpsc.rs:348:9
[INFO] [stderr]     |
[INFO] [stderr] 348 |         tx.send(i).await.unwrap();
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error[E0698]: type inside `async fn` body must be known in this context
[INFO] [stderr]    --> tests/mpsc.rs:347:9
[INFO] [stderr]     |
[INFO] [stderr] 347 |     for i in 1..=3 {
[INFO] [stderr]     |         ^ cannot infer type for type `{integer}`
[INFO] [stderr]     |
[INFO] [stderr] note: the type is part of the `async fn` body because of this `await`
[INFO] [stderr]    --> tests/mpsc.rs:348:9
[INFO] [stderr]     |
[INFO] [stderr] 348 |         tx.send(i).await.unwrap();
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error[E0698]: type inside `async fn` body must be known in this context
[INFO] [stderr]    --> tests/mpsc.rs:348:17
[INFO] [stderr]     |
[INFO] [stderr] 348 |         tx.send(i).await.unwrap();
[INFO] [stderr]     |                 ^ cannot infer type for type `{integer}`
[INFO] [stderr]     |
[INFO] [stderr] note: the type is part of the `async fn` body because of this `await`
[INFO] [stderr]    --> tests/mpsc.rs:348:9
[INFO] [stderr]     |
[INFO] [stderr] 348 |         tx.send(i).await.unwrap();
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: could not compile `futures-channel-preview`.
[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] [stderr] error: aborting due to 103 previous errors
[INFO] [stderr] 
[INFO] [stderr] Some errors have detailed explanations: E0405, E0425, E0432, E0433, E0698.
[INFO] [stderr] For more information about an error, try `rustc --explain E0405`.
[INFO] [stderr] error: could not compile `futures-channel-preview`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "241ca056b91aa783982dce071aa6586c1c6b36749f3fc2a6385a3bf440d1e9a0"`
[INFO] running `"docker" "rm" "-f" "241ca056b91aa783982dce071aa6586c1c6b36749f3fc2a6385a3bf440d1e9a0"`
[INFO] [stdout] 241ca056b91aa783982dce071aa6586c1c6b36749f3fc2a6385a3bf440d1e9a0
