[INFO] crate futures 0.3.1 is already in cache
[INFO] checking futures-0.3.1 against master#2da942f32802c8233a09744024dfbc34431adf65 for pr-66963
[INFO] extracting crate futures 0.3.1 into /workspace/builds/worker-2/source
[INFO] validating manifest of crates.io crate futures 0.3.1 on toolchain 2da942f32802c8233a09744024dfbc34431adf65
[INFO] running `"/workspace/cargo-home/bin/cargo" "+2da942f32802c8233a09744024dfbc34431adf65" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate futures 0.3.1
[INFO] finished tweaking crates.io crate futures 0.3.1
[INFO] tweaked toml for crates.io crate futures 0.3.1 written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+2da942f32802c8233a09744024dfbc34431adf65" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+2da942f32802c8233a09744024dfbc34431adf65" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "+2da942f32802c8233a09744024dfbc34431adf65" "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] 7cdcc4743de5287480c44e50a03735b01b8f2ee67998d9159c3aa2f6575079d7
[INFO] running `"docker" "start" "-a" "7cdcc4743de5287480c44e50a03735b01b8f2ee67998d9159c3aa2f6575079d7"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Checking futures-util v0.3.1
[INFO] [stderr]     Checking futures-executor v0.3.1
[INFO] [stderr]     Checking futures v0.3.1 (/opt/rustwide/workdir)
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `futures_test`
[INFO] [stderr]  --> tests/abortable.rs:5:5
[INFO] [stderr]   |
[INFO] [stderr] 5 | use futures_test::task::new_count_waker;
[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 `futures_test`
[INFO] [stderr]  --> tests/oneshot.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 | use futures_test::future::FutureTestExt;
[INFO] [stderr]   |     ^^^^^^^^^^^^ use of undeclared type or module `futures_test`
[INFO] [stderr] 
[INFO] [stderr] error[E0599]: no method named `run_in_background` found for type `futures_util::future::try_future::map_ok::MapOk<futures_channel::oneshot::Receiver<i32>, [closure@tests/oneshot.rs:13:16: 13:36 tx2:_]>` in the current scope
[INFO] [stderr]   --> tests/oneshot.rs:13:38
[INFO] [stderr]    |
[INFO] [stderr] 13 |     rx1.map_ok(move |x| tx2.send(x)).run_in_background();
[INFO] [stderr]    |                                      ^^^^^^^^^^^^^^^^^ method not found in `futures_util::future::try_future::map_ok::MapOk<futures_channel::oneshot::Receiver<i32>, [closure@tests/oneshot.rs:13:16: 13:36 tx2:_]>`
[INFO] [stderr] 
[INFO] [stderr] error[E0599]: no method named `run_in_background` found for type `futures_util::future::try_future::map_ok::MapOk<futures_channel::oneshot::Receiver<i32>, [closure@tests/oneshot.rs:24:16: 24:45 tx2:_]>` in the current scope
[INFO] [stderr]   --> tests/oneshot.rs:24:47
[INFO] [stderr]    |
[INFO] [stderr] 24 |     rx1.map_ok(move |x| tx2.send(x).unwrap()).run_in_background();
[INFO] [stderr]    |                                               ^^^^^^^^^^^^^^^^^ method not found in `futures_util::future::try_future::map_ok::MapOk<futures_channel::oneshot::Receiver<i32>, [closure@tests/oneshot.rs:24:16: 24:45 tx2:_]>`
[INFO] [stderr] 
[INFO] [stderr] error[E0599]: no method named `run_in_background` found for type `futures_util::future::try_future::map_ok::MapOk<futures_channel::oneshot::Receiver<i32>, [closure@tests/oneshot.rs:33:16: 33:45 tx2:_]>` in the current scope
[INFO] [stderr]   --> tests/oneshot.rs:33:47
[INFO] [stderr]    |
[INFO] [stderr] 33 |     rx1.map_ok(move |x| tx2.send(x).unwrap()).run_in_background();
[INFO] [stderr]    |                                               ^^^^^^^^^^^^^^^^^ method not found in `futures_util::future::try_future::map_ok::MapOk<futures_channel::oneshot::Receiver<i32>, [closure@tests/oneshot.rs:33:16: 33:45 tx2:_]>`
[INFO] [stderr] 
[INFO] [stderr] error[E0599]: no method named `run_in_background` found for type `futures_util::future::future::map::Map<futures_channel::oneshot::Receiver<i32>, [closure@tests/oneshot.rs:44:13: 44:52 tx2:_]>` in the current scope
[INFO] [stderr]   --> tests/oneshot.rs:44:54
[INFO] [stderr]    |
[INFO] [stderr] 44 |     rx1.map(move |result| tx2.send(result).unwrap()).run_in_background();
[INFO] [stderr]    |                                                      ^^^^^^^^^^^^^^^^^ method not found in `futures_util::future::future::map::Map<futures_channel::oneshot::Receiver<i32>, [closure@tests/oneshot.rs:44:13: 44:52 tx2:_]>`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `futures_test`
[INFO] [stderr]  --> tests/io_read_to_string.rs:6:5
[INFO] [stderr]   |
[INFO] [stderr] 6 | use futures_test::io::AsyncReadTestExt;
[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 `futures_test`
[INFO] [stderr]  --> tests/io_read_to_string.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 | use futures_test::task::noop_context;
[INFO] [stderr]   |     ^^^^^^^^^^^^ use of undeclared type or module `futures_test`
[INFO] [stderr] 
[INFO] [stderr] error[E0599]: no method named `run_in_background` found for type `futures_util::future::future::map::Map<futures_channel::oneshot::Receiver<i32>, [closure@tests/oneshot.rs:55:13: 55:52 tx2:_]>` in the current scope
[INFO] [stderr]   --> tests/oneshot.rs:55:54
[INFO] [stderr]    |
[INFO] [stderr] 55 |     rx1.map(move |result| tx2.send(result).unwrap()).run_in_background();
[INFO] [stderr]    |                                                      ^^^^^^^^^^^^^^^^^ method not found in `futures_util::future::future::map::Map<futures_channel::oneshot::Receiver<i32>, [closure@tests/oneshot.rs:55:13: 55:52 tx2:_]>`
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 6 previous errors
[INFO] [stderr] 
[INFO] [stderr] Some errors have detailed explanations: E0433, E0599.
[INFO] [stderr] For more information about an error, try `rustc --explain E0433`.
[INFO] [stderr] error: could not compile `futures`.
[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]  --> tests/basic_combinators.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 | use futures_test::future::FutureTestExt;
[INFO] [stderr]   |     ^^^^^^^^^^^^ use of undeclared type or module `futures_test`
[INFO] [stderr] 
[INFO] [stderr] error[E0432]: unresolved import `futures::executor::ThreadPool`
[INFO] [stderr]  --> tests/eventual.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 | use futures::executor::ThreadPool;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ no `ThreadPool` in `executor`
[INFO] [stderr] 
[INFO] [stderr] error[E0599]: no method named `run_in_background` found for type `futures_util::future::future::map::Map<futures_util::future::future::map::Map<futures_util::future::future::then::Then<futures_util::future::ready::Ready<{integer}>, futures_util::future::ready::Ready<{integer}>, [closure@tests/basic_combinators.rs:12:15: 16:10 tx1:_]>, [closure@tests/basic_combinators.rs:16:16: 20:10 tx2:_]>, [closure@tests/basic_combinators.rs:20:16: 22:10 tx3:_]>` in the current scope
[INFO] [stderr]   --> tests/basic_combinators.rs:25:9
[INFO] [stderr]    |
[INFO] [stderr] 25 |     fut.run_in_background(); // Start it
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^ method not found in `futures_util::future::future::map::Map<futures_util::future::future::map::Map<futures_util::future::future::then::Then<futures_util::future::ready::Ready<{integer}>, futures_util::future::ready::Ready<{integer}>, [closure@tests/basic_combinators.rs:12:15: 16:10 tx1:_]>, [closure@tests/basic_combinators.rs:16:16: 20:10 tx2:_]>, [closure@tests/basic_combinators.rs:20:16: 22:10 tx3:_]>`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `futures_test`
[INFO] [stderr]  --> tests/ready_queue.rs:6:5
[INFO] [stderr]   |
[INFO] [stderr] 6 | use futures_test::task::noop_context;
[INFO] [stderr]   |     ^^^^^^^^^^^^ use of undeclared type or module `futures_test`
[INFO] [stderr] 
[INFO] [stderr] error[E0599]: no method named `run_in_background` found for type `futures_util::future::future::map::Map<futures_util::future::try_future::map_err::MapErr<futures_util::future::try_future::map_ok::MapOk<futures_util::future::try_future::or_else::OrElse<futures_util::future::try_future::and_then::AndThen<futures_util::future::future::map::Map<futures_util::future::try_future::map_err::MapErr<futures_util::future::try_future::map_ok::MapOk<futures_util::future::try_future::or_else::OrElse<futures_util::future::try_future::and_then::AndThen<futures_util::future::ready::Ready<std::result::Result<i32, i32>>, futures_util::future::ready::Ready<std::result::Result<i32, i32>>, [closure@tests/basic_combinators.rs:44:19: 48:10 tx1:_]>, futures_util::future::ready::Ready<std::result::Result<i32, i32>>, [closure@tests/basic_combinators.rs:49:18: 53:10 tx2:_]>, [closure@tests/basic_combinators.rs:54:17: 58:10 tx3:_]>, [closure@tests/basic_combinators.rs:59:18: 63:10 tx4:_]>, [closure@tests/basic_combinators.rs:64:14: 68:10 tx5:_]>, futures_util::future::ready::Ready<std::result::Result<i32, i32>>, [closure@tests/basic_combinators.rs:69:19: 73:10 tx6:_]>, futures_util::future::ready::Ready<std::result::Result<i32, i32>>, [closure@tests/basic_combinators.rs:74:18: 78:10 tx7:_]>, [closure@tests/basic_combinators.rs:79:17: 83:10 tx8:_]>, [closure@tests/basic_combinators.rs:84:18: 88:10 tx9:_]>, [closure@tests/basic_combinators.rs:89:14: 92:10 tx10:_]>` in the current scope
[INFO] [stderr]   --> tests/basic_combinators.rs:95:9
[INFO] [stderr]    |
[INFO] [stderr] 95 |     fut.run_in_background(); // Start it
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^ method not found in `futures_util::future::future::map::Map<futures_util::future::try_future::map_err::MapErr<futures_util::future::try_future::map_ok::MapOk<futures_util::future::try_future::or_else::OrElse<futures_util::future::try_future::and_then::AndThen<futures_util::future::future::map::Map<futures_util::future::try_future::map_err::MapErr<futures_util::future::try_future::map_ok::MapOk<futures_util::future::try_future::or_else::OrElse<futures_util::future::try_future::and_then::AndThen<futures_util::future::ready::Ready<std::result::Result<i32, i32>>, futures_util::future::ready::Ready<std::result::Result<i32, i32>>, [closure@tests/basic_combinators.rs:44:19: 48:10 tx1:_]>, futures_util::future::ready::Ready<std::result::Result<i32, i32>>, [closure@tests/basic_combinators.rs:49:18: 53:10 tx2:_]>, [closure@tests/basic_combinators.rs:54:17: 58:10 tx3:_]>, [closure@tests/basic_combinators.rs:59:18: 63:10 tx4:_]>, [closure@tests/basic_combinators.rs:64:14: 68:10 tx5:_]>, futures_util::future::ready::Ready<std::result::Result<i32, i32>>, [closure@tests/basic_combinators.rs:69:19: 73:10 tx6:_]>, futures_util::future::ready::Ready<std::result::Result<i32, i32>>, [closure@tests/basic_combinators.rs:74:18: 78:10 tx7:_]>, [closure@tests/basic_combinators.rs:79:17: 83:10 tx8:_]>, [closure@tests/basic_combinators.rs:84:18: 88:10 tx9:_]>, [closure@tests/basic_combinators.rs:89:14: 92:10 tx10:_]>`
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 3 previous errors
[INFO] [stderr] 
[INFO] [stderr] Some errors have detailed explanations: E0433, E0599.
[INFO] [stderr] For more information about an error, try `rustc --explain E0433`.
[INFO] [stderr] warning: unused import: `futures::task::SpawnExt`
[INFO] [stderr]  --> tests/eventual.rs:4:5
[INFO] [stderr]   |
[INFO] [stderr] 4 | use futures::task::SpawnExt;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0432`.
[INFO] [stderr] error: could not compile `futures`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: could not compile `futures`.
[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]  --> tests/eager_drop.rs:4:5
[INFO] [stderr]   |
[INFO] [stderr] 4 | use futures_test::future::FutureTestExt;
[INFO] [stderr]   |     ^^^^^^^^^^^^ use of undeclared type or module `futures_test`
[INFO] [stderr] 
[INFO] [stderr] error[E0599]: no method named `run_in_background` found for type `futures_util::future::future::map::Map<futures_util::future::try_future::map_ok::MapOk<futures_util::future::ready::Ready<std::result::Result<i32, i32>>, [closure@tests/eager_drop.rs:17:17: 17:71 tx1:_]>, [closure@tests/eager_drop.rs:18:14: 21:10 rx1:_, tx2:_]>` in the current scope
[INFO] [stderr]   --> tests/eager_drop.rs:22:10
[INFO] [stderr]    |
[INFO] [stderr] 22 |         .run_in_background();
[INFO] [stderr]    |          ^^^^^^^^^^^^^^^^^ method not found in `futures_util::future::future::map::Map<futures_util::future::try_future::map_ok::MapOk<futures_util::future::ready::Ready<std::result::Result<i32, i32>>, [closure@tests/eager_drop.rs:17:17: 17:71 tx1:_]>, [closure@tests/eager_drop.rs:18:14: 21:10 rx1:_, tx2:_]>`
[INFO] [stderr] 
[INFO] [stderr] error[E0599]: no method named `run_in_background` found for type `futures_util::future::future::map::Map<futures_util::future::try_future::map_err::MapErr<futures_util::future::ready::Ready<std::result::Result<i32, i32>>, [closure@tests/eager_drop.rs:35:18: 35:72 tx1:_]>, [closure@tests/eager_drop.rs:36:14: 39:10 rx1:_, tx2:_]>` in the current scope
[INFO] [stderr]   --> tests/eager_drop.rs:40:10
[INFO] [stderr]    |
[INFO] [stderr] 40 |         .run_in_background();
[INFO] [stderr]    |          ^^^^^^^^^^^^^^^^^ method not found in `futures_util::future::future::map::Map<futures_util::future::try_future::map_err::MapErr<futures_util::future::ready::Ready<std::result::Result<i32, i32>>, [closure@tests/eager_drop.rs:35:18: 35:72 tx1:_]>, [closure@tests/eager_drop.rs:36:14: 39:10 rx1:_, tx2:_]>`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `futures_test`
[INFO] [stderr]  --> tests/futures_ordered.rs:5:5
[INFO] [stderr]   |
[INFO] [stderr] 5 | use futures_test::task::noop_context;
[INFO] [stderr]   |     ^^^^^^^^^^^^ use of undeclared type or module `futures_test`
[INFO] [stderr] 
[INFO] [stderr] error[E0599]: no method named `run_in_background` found for type `futures_util::future::future::then::Then<FutureData<futures_util::future::try_future::unwrap_or_else::UnwrapOrElse<futures_channel::oneshot::Receiver<()>, [closure@tests/eager_drop.rs:68:57: 68:73]>, std::sync::mpsc::Sender<()>>, futures_util::future::ready::Ready<()>, [closure@tests/eager_drop.rs:69:15: 73:10 rx1:_, tx2:_]>` in the current scope
[INFO] [stderr]   --> tests/eager_drop.rs:74:10
[INFO] [stderr]    |
[INFO] [stderr] 74 |         .run_in_background();
[INFO] [stderr]    |          ^^^^^^^^^^^^^^^^^ method not found in `futures_util::future::future::then::Then<FutureData<futures_util::future::try_future::unwrap_or_else::UnwrapOrElse<futures_channel::oneshot::Receiver<()>, [closure@tests/eager_drop.rs:68:57: 68:73]>, std::sync::mpsc::Sender<()>>, futures_util::future::ready::Ready<()>, [closure@tests/eager_drop.rs:69:15: 73:10 rx1:_, tx2:_]>`
[INFO] [stderr] 
[INFO] [stderr] error[E0599]: no method named `run_in_background` found for type `futures_util::future::try_future::and_then::AndThen<FutureData<futures_util::future::try_future::unwrap_or_else::UnwrapOrElse<futures_channel::oneshot::Receiver<std::result::Result<(), ()>>, [closure@tests/eager_drop.rs:87:57: 87:73]>, std::sync::mpsc::Sender<()>>, futures_util::future::ready::Ready<std::result::Result<(), ()>>, [closure@tests/eager_drop.rs:88:19: 92:10 rx1:_, tx2:_]>` in the current scope
[INFO] [stderr]   --> tests/eager_drop.rs:93:10
[INFO] [stderr]    |
[INFO] [stderr] 93 |         .run_in_background();
[INFO] [stderr]    |          ^^^^^^^^^^^^^^^^^ method not found in `futures_util::future::try_future::and_then::AndThen<FutureData<futures_util::future::try_future::unwrap_or_else::UnwrapOrElse<futures_channel::oneshot::Receiver<std::result::Result<(), ()>>, [closure@tests/eager_drop.rs:87:57: 87:73]>, std::sync::mpsc::Sender<()>>, futures_util::future::ready::Ready<std::result::Result<(), ()>>, [closure@tests/eager_drop.rs:88:19: 92:10 rx1:_, tx2:_]>`
[INFO] [stderr] 
[INFO] [stderr] error[E0425]: cannot find function `noop_context` in this scope
[INFO] [stderr]   --> tests/io_read_to_string.rs:27:18
[INFO] [stderr]    |
[INFO] [stderr] 27 |     let mut cx = noop_context();
[INFO] [stderr]    |                  ^^^^^^^^^^^^ not found in this scope
[INFO] [stderr] 
[INFO] [stderr] error[E0599]: no method named `run_in_background` found for type `futures_util::future::try_future::or_else::OrElse<FutureData<futures_util::future::try_future::unwrap_or_else::UnwrapOrElse<futures_channel::oneshot::Receiver<std::result::Result<(), ()>>, [closure@tests/eager_drop.rs:106:57: 106:73]>, std::sync::mpsc::Sender<()>>, futures_util::future::ready::Ready<std::result::Result<(), ()>>, [closure@tests/eager_drop.rs:107:18: 111:10 rx1:_, tx2:_]>` in the current scope
[INFO] [stderr]    --> tests/eager_drop.rs:112:10
[INFO] [stderr]     |
[INFO] [stderr] 112 |         .run_in_background();
[INFO] [stderr]     |          ^^^^^^^^^^^^^^^^^ method not found in `futures_util::future::try_future::or_else::OrElse<FutureData<futures_util::future::try_future::unwrap_or_else::UnwrapOrElse<futures_channel::oneshot::Receiver<std::result::Result<(), ()>>, [closure@tests/eager_drop.rs:106:57: 106:73]>, std::sync::mpsc::Sender<()>>, futures_util::future::ready::Ready<std::result::Result<(), ()>>, [closure@tests/eager_drop.rs:107:18: 111:10 rx1:_, tx2:_]>`
[INFO] [stderr] 
[INFO] [stderr] error[E0425]: cannot find function `new_count_waker` in this scope
[INFO] [stderr]   --> tests/abortable.rs:21:28
[INFO] [stderr]    |
[INFO] [stderr] 21 |     let (waker, counter) = new_count_waker();
[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/stream_select_next_some.rs:5:5
[INFO] [stderr]   |
[INFO] [stderr] 5 | use futures_test::future::FutureTestExt;
[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 `futures_test`
[INFO] [stderr]  --> tests/stream_select_next_some.rs:6:5
[INFO] [stderr]   |
[INFO] [stderr] 6 | use futures_test::task::new_count_waker;
[INFO] [stderr]   |     ^^^^^^^^^^^^ use of undeclared type or module `futures_test`
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 6 previous errors
[INFO] [stderr] 
[INFO] [stderr] Some errors have detailed explanations: E0433, E0599.
[INFO] [stderr] For more information about an error, try `rustc --explain E0433`.
[INFO] [stderr] error: could not compile `futures`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error[E0425]: cannot find function `noop_context` in this scope
[INFO] [stderr]   --> tests/ready_queue.rs:83:27
[INFO] [stderr]    |
[INFO] [stderr] 83 |             let cx = &mut noop_context();
[INFO] [stderr]    |                           ^^^^^^^^^^^^ not found in this scope
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 2 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: could not compile `futures`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: aborting due to 2 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: could not compile `futures`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error[E0425]: cannot find function `new_count_waker` in this scope
[INFO] [stderr]   --> tests/stream_select_next_some.rs:10:28
[INFO] [stderr]    |
[INFO] [stderr] 10 |     let (waker, counter) = new_count_waker();
[INFO] [stderr]    |                            ^^^^^^^^^^^^^^^ not found in this scope
[INFO] [stderr] 
[INFO] [stderr] error[E0599]: no method named `interleave_pending` found for type `futures_util::stream::try_stream::into_async_read::IntoAsyncRead<futures_util::stream::stream::map::Map<futures_util::stream::iter::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] [stderr]   --> tests/io_read_to_string.rs:40:10
[INFO] [stderr]    |
[INFO] [stderr] 40 |         .interleave_pending();
[INFO] [stderr]    |          ^^^^^^^^^^^^^^^^^^ method not found in `futures_util::stream::try_stream::into_async_read::IntoAsyncRead<futures_util::stream::stream::map::Map<futures_util::stream::iter::Iter<std::vec::IntoIter<&[u8]>>, fn(&[u8]) -> std::result::Result<&[u8], std::io::Error> {std::result::Result::<&[u8], std::io::Error>::Ok}>>`
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 4 previous errors
[INFO] [stderr] 
[INFO] [stderr] Some errors have detailed explanations: E0425, E0433, E0599.
[INFO] [stderr] For more information about an error, try `rustc --explain E0425`.
[INFO] [stderr] error: could not compile `futures`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error[E0425]: cannot find function `noop_context` in this scope
[INFO] [stderr]   --> tests/futures_ordered.rs:17:41
[INFO] [stderr]    |
[INFO] [stderr] 17 |     assert!(stream.poll_next_unpin(&mut noop_context()).is_pending());
[INFO] [stderr]    |                                         ^^^^^^^^^^^^ not found in this scope
[INFO] [stderr] 
[INFO] [stderr] error[E0425]: cannot find function `noop_context` in this scope
[INFO] [stderr]   --> tests/futures_ordered.rs:40:18
[INFO] [stderr]    |
[INFO] [stderr] 40 |     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]   --> tests/futures_ordered.rs:73:19
[INFO] [stderr]    |
[INFO] [stderr] 73 |     let cx = &mut noop_context();
[INFO] [stderr]    |                   ^^^^^^^^^^^^ not found in this scope
[INFO] [stderr] 
[INFO] [stderr] error[E0599]: no method named `pending_once` found for type `futures_util::future::ready::Ready<{integer}>` in the current scope
[INFO] [stderr]   --> tests/stream_select_next_some.rs:39:40
[INFO] [stderr]    |
[INFO] [stderr] 39 |         let mut fut = future::ready(1).pending_once();
[INFO] [stderr]    |                                        ^^^^^^^^^^^^ method not found in `futures_util::future::ready::Ready<{integer}>`
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 4 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: could not compile `futures`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error[E0698]: type inside `async` block must be known in this context
[INFO] [stderr]   --> tests/stream_select_next_some.rs:40:13
[INFO] [stderr]    |
[INFO] [stderr] 40 |         let mut async_tasks = FuturesUnordered::new();
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^ cannot infer type for `{integer}`
[INFO] [stderr]    |
[INFO] [stderr] note: the type is part of the `async` block because of this `await`
[INFO] [stderr]   --> tests/stream_select_next_some.rs:43:13
[INFO] [stderr]    |
[INFO] [stderr] 43 | /             select! {
[INFO] [stderr] 44 | |                 num = fut => {
[INFO] [stderr] 45 | |                     total += num;
[INFO] [stderr] 46 | |                     async_tasks.push(async { 5 });
[INFO] [stderr] ...  |
[INFO] [stderr] 51 | |                 complete => break,
[INFO] [stderr] 52 | |             }
[INFO] [stderr]    | |_____________^
[INFO] [stderr]    = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] error[E0698]: type inside `async` block must be known in this context
[INFO] [stderr]   --> tests/stream_select_next_some.rs:41:13
[INFO] [stderr]    |
[INFO] [stderr] 41 |         let mut total = 0;
[INFO] [stderr]    |             ^^^^^^^^^ cannot infer type for `{integer}`
[INFO] [stderr]    |
[INFO] [stderr] note: the type is part of the `async` block because of this `await`
[INFO] [stderr]   --> tests/stream_select_next_some.rs:43:13
[INFO] [stderr]    |
[INFO] [stderr] 43 | /             select! {
[INFO] [stderr] 44 | |                 num = fut => {
[INFO] [stderr] 45 | |                     total += num;
[INFO] [stderr] 46 | |                     async_tasks.push(async { 5 });
[INFO] [stderr] ...  |
[INFO] [stderr] 51 | |                 complete => break,
[INFO] [stderr] 52 | |             }
[INFO] [stderr]    | |_____________^
[INFO] [stderr]    = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] error[E0698]: type inside `async` block must be known in this context
[INFO] [stderr]   --> tests/stream_select_next_some.rs:43:13
[INFO] [stderr]    |
[INFO] [stderr] 43 | /             select! {
[INFO] [stderr] 44 | |                 num = fut => {
[INFO] [stderr] 45 | |                     total += num;
[INFO] [stderr] 46 | |                     async_tasks.push(async { 5 });
[INFO] [stderr] ...  |
[INFO] [stderr] 51 | |                 complete => break,
[INFO] [stderr] 52 | |             }
[INFO] [stderr]    | |_____________^ cannot infer type for `{integer}`
[INFO] [stderr]    |
[INFO] [stderr] note: the type is part of the `async` block because of this `await`
[INFO] [stderr]   --> tests/stream_select_next_some.rs:43:13
[INFO] [stderr]    |
[INFO] [stderr] 43 | /             select! {
[INFO] [stderr] 44 | |                 num = fut => {
[INFO] [stderr] 45 | |                     total += num;
[INFO] [stderr] 46 | |                     async_tasks.push(async { 5 });
[INFO] [stderr] ...  |
[INFO] [stderr] 51 | |                 complete => break,
[INFO] [stderr] 52 | |             }
[INFO] [stderr]    | |_____________^
[INFO] [stderr]    = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] error[E0698]: type inside `async` block must be known in this context
[INFO] [stderr]   --> tests/stream_select_next_some.rs:43:13
[INFO] [stderr]    |
[INFO] [stderr] 43 | /             select! {
[INFO] [stderr] 44 | |                 num = fut => {
[INFO] [stderr] 45 | |                     total += num;
[INFO] [stderr] 46 | |                     async_tasks.push(async { 5 });
[INFO] [stderr] ...  |
[INFO] [stderr] 51 | |                 complete => break,
[INFO] [stderr] 52 | |             }
[INFO] [stderr]    | |_____________^ cannot infer type for `{integer}`
[INFO] [stderr]    |
[INFO] [stderr] note: the type is part of the `async` block because of this `await`
[INFO] [stderr]   --> tests/stream_select_next_some.rs:43:13
[INFO] [stderr]    |
[INFO] [stderr] 43 | /             select! {
[INFO] [stderr] 44 | |                 num = fut => {
[INFO] [stderr] 45 | |                     total += num;
[INFO] [stderr] 46 | |                     async_tasks.push(async { 5 });
[INFO] [stderr] ...  |
[INFO] [stderr] 51 | |                 complete => break,
[INFO] [stderr] 52 | |             }
[INFO] [stderr]    | |_____________^
[INFO] [stderr]    = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] error[E0698]: type inside `async` block must be known in this context
[INFO] [stderr]   --> tests/stream_select_next_some.rs:43:13
[INFO] [stderr]    |
[INFO] [stderr] 43 | /             select! {
[INFO] [stderr] 44 | |                 num = fut => {
[INFO] [stderr] 45 | |                     total += num;
[INFO] [stderr] 46 | |                     async_tasks.push(async { 5 });
[INFO] [stderr] ...  |
[INFO] [stderr] 51 | |                 complete => break,
[INFO] [stderr] 52 | |             }
[INFO] [stderr]    | |_____________^ cannot infer type for `{integer}`
[INFO] [stderr]    |
[INFO] [stderr] note: the type is part of the `async` block because of this `await`
[INFO] [stderr]   --> tests/stream_select_next_some.rs:43:13
[INFO] [stderr]    |
[INFO] [stderr] 43 | /             select! {
[INFO] [stderr] 44 | |                 num = fut => {
[INFO] [stderr] 45 | |                     total += num;
[INFO] [stderr] 46 | |                     async_tasks.push(async { 5 });
[INFO] [stderr] ...  |
[INFO] [stderr] 51 | |                 complete => break,
[INFO] [stderr] 52 | |             }
[INFO] [stderr]    | |_____________^
[INFO] [stderr]    = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] error[E0599]: no method named `pending_once` found for type `futures_util::future::ready::Ready<{integer}>` in the current scope
[INFO] [stderr]   --> tests/stream_select_next_some.rs:68:40
[INFO] [stderr]    |
[INFO] [stderr] 68 |         let mut fut = future::ready(1).pending_once();
[INFO] [stderr]    |                                        ^^^^^^^^^^^^ method not found in `futures_util::future::ready::Ready<{integer}>`
[INFO] [stderr] 
[INFO] [stderr] error[E0698]: type inside `async` block must be known in this context
[INFO] [stderr]   --> tests/stream_select_next_some.rs:69:13
[INFO] [stderr]    |
[INFO] [stderr] 69 |         let mut async_tasks = FuturesUnordered::new();
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^ cannot infer type for `{integer}`
[INFO] [stderr]    |
[INFO] [stderr] note: the type is part of the `async` block because of this `await`
[INFO] [stderr]   --> tests/stream_select_next_some.rs:72:13
[INFO] [stderr]    |
[INFO] [stderr] 72 | /             select! {
[INFO] [stderr] 73 | |                 num = fut => {
[INFO] [stderr] 74 | |                     total += num;
[INFO] [stderr] 75 | |                     async_tasks.push(async { 5 });
[INFO] [stderr] ...  |
[INFO] [stderr] 80 | |                 complete => break,
[INFO] [stderr] 81 | |             }
[INFO] [stderr]    | |_____________^
[INFO] [stderr]    = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] error[E0698]: type inside `async` block must be known in this context
[INFO] [stderr]   --> tests/stream_select_next_some.rs:70:13
[INFO] [stderr]    |
[INFO] [stderr] 70 |         let mut total = 0;
[INFO] [stderr]    |             ^^^^^^^^^ cannot infer type for `{integer}`
[INFO] [stderr]    |
[INFO] [stderr] note: the type is part of the `async` block because of this `await`
[INFO] [stderr]   --> tests/stream_select_next_some.rs:72:13
[INFO] [stderr]    |
[INFO] [stderr] 72 | /             select! {
[INFO] [stderr] 73 | |                 num = fut => {
[INFO] [stderr] 74 | |                     total += num;
[INFO] [stderr] 75 | |                     async_tasks.push(async { 5 });
[INFO] [stderr] ...  |
[INFO] [stderr] 80 | |                 complete => break,
[INFO] [stderr] 81 | |             }
[INFO] [stderr]    | |_____________^
[INFO] [stderr]    = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] error[E0698]: type inside `async` block must be known in this context
[INFO] [stderr]   --> tests/stream_select_next_some.rs:72:13
[INFO] [stderr]    |
[INFO] [stderr] 72 | /             select! {
[INFO] [stderr] 73 | |                 num = fut => {
[INFO] [stderr] 74 | |                     total += num;
[INFO] [stderr] 75 | |                     async_tasks.push(async { 5 });
[INFO] [stderr] ...  |
[INFO] [stderr] 80 | |                 complete => break,
[INFO] [stderr] 81 | |             }
[INFO] [stderr]    | |_____________^ cannot infer type for `{integer}`
[INFO] [stderr]    |
[INFO] [stderr] note: the type is part of the `async` block because of this `await`
[INFO] [stderr]   --> tests/stream_select_next_some.rs:72:13
[INFO] [stderr]    |
[INFO] [stderr] 72 | /             select! {
[INFO] [stderr] 73 | |                 num = fut => {
[INFO] [stderr] 74 | |                     total += num;
[INFO] [stderr] 75 | |                     async_tasks.push(async { 5 });
[INFO] [stderr] ...  |
[INFO] [stderr] 80 | |                 complete => break,
[INFO] [stderr] 81 | |             }
[INFO] [stderr]    | |_____________^
[INFO] [stderr]    = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] error[E0698]: type inside `async` block must be known in this context
[INFO] [stderr]   --> tests/stream_select_next_some.rs:72:13
[INFO] [stderr]    |
[INFO] [stderr] 72 | /             select! {
[INFO] [stderr] 73 | |                 num = fut => {
[INFO] [stderr] 74 | |                     total += num;
[INFO] [stderr] 75 | |                     async_tasks.push(async { 5 });
[INFO] [stderr] ...  |
[INFO] [stderr] 80 | |                 complete => break,
[INFO] [stderr] 81 | |             }
[INFO] [stderr]    | |_____________^ cannot infer type for `{integer}`
[INFO] [stderr]    |
[INFO] [stderr] note: the type is part of the `async` block because of this `await`
[INFO] [stderr]   --> tests/stream_select_next_some.rs:72:13
[INFO] [stderr]    |
[INFO] [stderr] 72 | /             select! {
[INFO] [stderr] 73 | |                 num = fut => {
[INFO] [stderr] 74 | |                     total += num;
[INFO] [stderr] 75 | |                     async_tasks.push(async { 5 });
[INFO] [stderr] ...  |
[INFO] [stderr] 80 | |                 complete => break,
[INFO] [stderr] 81 | |             }
[INFO] [stderr]    | |_____________^
[INFO] [stderr]    = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 14 previous errors
[INFO] [stderr] 
[INFO] [stderr] Some errors have detailed explanations: E0425, E0433, E0599, E0698.
[INFO] [stderr] For more information about an error, try `rustc --explain E0425`.
[INFO] [stderr] error: could not compile `futures`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "7cdcc4743de5287480c44e50a03735b01b8f2ee67998d9159c3aa2f6575079d7"`
[INFO] running `"docker" "rm" "-f" "7cdcc4743de5287480c44e50a03735b01b8f2ee67998d9159c3aa2f6575079d7"`
[INFO] [stdout] 7cdcc4743de5287480c44e50a03735b01b8f2ee67998d9159c3aa2f6575079d7