[INFO] fetching crate futures-preview 0.3.0-alpha.19...
[INFO] testing futures-preview-0.3.0-alpha.19 against 1.49.0 for beta-1.50-1
[INFO] extracting crate futures-preview 0.3.0-alpha.19 into /workspace/builds/worker-3/source
[INFO] validating manifest of crates.io crate futures-preview 0.3.0-alpha.19 on toolchain 1.49.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate futures-preview 0.3.0-alpha.19
[INFO] finished tweaking crates.io crate futures-preview 0.3.0-alpha.19
[INFO] tweaked toml for crates.io crate futures-preview 0.3.0-alpha.19 written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "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" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] df0ed37671971a7553966565a392706c3d92061ac736968f958493b7b53cfa07
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "df0ed37671971a7553966565a392706c3d92061ac736968f958493b7b53cfa07", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "df0ed37671971a7553966565a392706c3d92061ac736968f958493b7b53cfa07", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "df0ed37671971a7553966565a392706c3d92061ac736968f958493b7b53cfa07", kill_on_drop: false }`
[INFO] [stdout] df0ed37671971a7553966565a392706c3d92061ac736968f958493b7b53cfa07
[INFO] running `Command { std: "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" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] f3a8ffdf39dd12842444a22089bcdcd83900d2543422631d105c9d0190e4f494
[INFO] running `Command { std: "docker" "start" "-a" "f3a8ffdf39dd12842444a22089bcdcd83900d2543422631d105c9d0190e4f494", kill_on_drop: false }`
[INFO] [stderr]    Compiling futures-sink-preview v0.3.0-alpha.19
[INFO] [stderr]    Compiling futures-core-preview v0.3.0-alpha.19
[INFO] [stderr]    Compiling futures-io-preview v0.3.0-alpha.19
[INFO] [stderr]    Compiling futures-channel-preview v0.3.0-alpha.19
[INFO] [stderr]    Compiling futures-util-preview v0.3.0-alpha.19
[INFO] [stderr]    Compiling futures-executor-preview v0.3.0-alpha.19
[INFO] [stderr]    Compiling futures-preview v0.3.0-alpha.19 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 7.65s
[INFO] running `Command { std: "docker" "inspect" "f3a8ffdf39dd12842444a22089bcdcd83900d2543422631d105c9d0190e4f494", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f3a8ffdf39dd12842444a22089bcdcd83900d2543422631d105c9d0190e4f494", kill_on_drop: false }`
[INFO] [stdout] f3a8ffdf39dd12842444a22089bcdcd83900d2543422631d105c9d0190e4f494
[INFO] running `Command { std: "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" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9c1103a900e97eed53b5cfd79dae277c9e2aad2a8553b5e05a66cc773d0fa8bb
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "9c1103a900e97eed53b5cfd79dae277c9e2aad2a8553b5e05a66cc773d0fa8bb", kill_on_drop: false }`
[INFO] [stderr]    Compiling futures-preview v0.3.0-alpha.19 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared crate or module `futures_test`
[INFO] [stdout]  --> tests/unfold.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use futures_test::future::FutureTestExt;
[INFO] [stdout]   |     ^^^^^^^^^^^^ use of undeclared crate or module `futures_test`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0432]: unresolved import `futures_test`
[INFO] [stdout]  --> tests/unfold.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use futures_test::{
[INFO] [stdout]   |     ^^^^^^^^^^^^ use of undeclared crate or module `futures_test`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot determine resolution for the macro `assert_stream_pending`
[INFO] [stdout]   --> tests/unfold.rs:21:5
[INFO] [stdout]    |
[INFO] [stdout] 21 |     assert_stream_pending!(stream);
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: import resolution is stuck, try simplifying macro imports
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot determine resolution for the macro `assert_stream_next`
[INFO] [stdout]   --> tests/unfold.rs:23:5
[INFO] [stdout]    |
[INFO] [stdout] 23 |     assert_stream_next!(stream, 0);
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: import resolution is stuck, try simplifying macro imports
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot determine resolution for the macro `assert_stream_pending`
[INFO] [stdout]   --> tests/unfold.rs:26:5
[INFO] [stdout]    |
[INFO] [stdout] 26 |     assert_stream_pending!(stream);
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: import resolution is stuck, try simplifying macro imports
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot determine resolution for the macro `assert_stream_next`
[INFO] [stdout]   --> tests/unfold.rs:27:5
[INFO] [stdout]    |
[INFO] [stdout] 27 |     assert_stream_next!(stream, 2);
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: import resolution is stuck, try simplifying macro imports
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot determine resolution for the macro `assert_stream_pending`
[INFO] [stdout]   --> tests/unfold.rs:29:5
[INFO] [stdout]    |
[INFO] [stdout] 29 |     assert_stream_pending!(stream);
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: import resolution is stuck, try simplifying macro imports
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot determine resolution for the macro `assert_stream_next`
[INFO] [stdout]   --> tests/unfold.rs:30:5
[INFO] [stdout]    |
[INFO] [stdout] 30 |     assert_stream_next!(stream, 4);
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: import resolution is stuck, try simplifying macro imports
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot determine resolution for the macro `assert_stream_pending`
[INFO] [stdout]   --> tests/unfold.rs:33:5
[INFO] [stdout]    |
[INFO] [stdout] 33 |     assert_stream_pending!(stream);
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: import resolution is stuck, try simplifying macro imports
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot determine resolution for the macro `assert_stream_done`
[INFO] [stdout]   --> tests/unfold.rs:34:5
[INFO] [stdout]    |
[INFO] [stdout] 34 |     assert_stream_done!(stream);
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: import resolution is stuck, try simplifying macro imports
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared crate or module `futures_test`
[INFO] [stdout]  --> tests/sink.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 | use futures_test::task::panic_context;
[INFO] [stdout]   |     ^^^^^^^^^^^^ use of undeclared crate or module `futures_test`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared crate or module `futures_test`
[INFO] [stdout]  --> tests/oneshot.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use futures_test::future::FutureTestExt;
[INFO] [stdout]   |     ^^^^^^^^^^^^ use of undeclared crate or module `futures_test`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared crate or module `futures_test`
[INFO] [stdout]  --> tests/stream_select_all.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use futures_test::task::noop_context;
[INFO] [stdout]   |     ^^^^^^^^^^^^ use of undeclared crate or module `futures_test`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared crate or module `futures_test`
[INFO] [stdout]  --> tests/mutex.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use futures_test::future::FutureTestExt;
[INFO] [stdout]   |     ^^^^^^^^^^^^ use of undeclared crate or module `futures_test`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared crate or module `futures_test`
[INFO] [stdout]  --> tests/mutex.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use futures_test::task::{panic_context, new_count_waker};
[INFO] [stdout]   |     ^^^^^^^^^^^^ use of undeclared crate or module `futures_test`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find function `noop_context` in this scope
[INFO] [stdout]   --> tests/stream_select_all.rs:10:18
[INFO] [stdout]    |
[INFO] [stdout] 10 |     let mut cx = noop_context();
[INFO] [stdout]    |                  ^^^^^^^^^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find function `panic_context` in this scope
[INFO] [stdout]   --> tests/sink.rs:24:34
[INFO] [stdout]    |
[INFO] [stdout] 24 |     match s.poll_next_unpin(&mut panic_context()) {
[INFO] [stdout]    |                                  ^^^^^^^^^^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find function `panic_context` in this scope
[INFO] [stdout]    --> tests/sink.rs:453:23
[INFO] [stdout]     |
[INFO] [stdout] 453 |         let cx = &mut panic_context();
[INFO] [stdout]     |                       ^^^^^^^^^^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find function `panic_context` in this scope
[INFO] [stdout]    --> tests/sink.rs:479:23
[INFO] [stdout]     |
[INFO] [stdout] 479 |         let cx = &mut panic_context();
[INFO] [stdout]     |                       ^^^^^^^^^^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared crate or module `futures_test`
[INFO] [stdout]  --> tests/io_read_until.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use futures_test::io::AsyncReadTestExt;
[INFO] [stdout]   |     ^^^^^^^^^^^^ use of undeclared crate or module `futures_test`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared crate or module `futures_test`
[INFO] [stdout]  --> tests/futures_ordered.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use futures_test::task::noop_context;
[INFO] [stdout]   |     ^^^^^^^^^^^^ use of undeclared crate or module `futures_test`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared crate or module `futures_test`
[INFO] [stdout]  --> tests/io_read_until.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use futures_test::task::noop_context;
[INFO] [stdout]   |     ^^^^^^^^^^^^ use of undeclared crate or module `futures_test`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0425, E0433.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0425`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `futures-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] [stdout] error[E0425]: cannot find function `panic_context` in this scope
[INFO] [stdout]   --> tests/mutex.rs:14:46
[INFO] [stdout]    |
[INFO] [stdout] 14 |         assert!(mutex.lock().poll_unpin(&mut panic_context()).is_ready());
[INFO] [stdout]    |                                              ^^^^^^^^^^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find function `new_count_waker` in this scope
[INFO] [stdout]   --> tests/mutex.rs:21:28
[INFO] [stdout]    |
[INFO] [stdout] 21 |     let (waker, counter) = new_count_waker();
[INFO] [stdout]    |                            ^^^^^^^^^^^^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared crate or module `futures_test`
[INFO] [stdout]  --> tests/io_read_to_string.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use futures_test::io::AsyncReadTestExt;
[INFO] [stdout]   |     ^^^^^^^^^^^^ use of undeclared crate or module `futures_test`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared crate or module `futures_test`
[INFO] [stdout]  --> tests/io_read_to_string.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use futures_test::task::noop_context;
[INFO] [stdout]   |     ^^^^^^^^^^^^ use of undeclared crate or module `futures_test`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find function `panic_context` in this scope
[INFO] [stdout]   --> tests/mutex.rs:22:45
[INFO] [stdout]    |
[INFO] [stdout] 22 |     let lock = mutex.lock().poll_unpin(&mut panic_context());
[INFO] [stdout]    |                                             ^^^^^^^^^^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find function `panic_context` in this scope
[INFO] [stdout]   --> tests/mutex.rs:33:36
[INFO] [stdout]    |
[INFO] [stdout] 33 |     assert!(waiter.poll_unpin(&mut panic_context()).is_ready());
[INFO] [stdout]    |                                    ^^^^^^^^^^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find function `noop_context` in this scope
[INFO] [stdout]   --> tests/futures_ordered.rs:17:41
[INFO] [stdout]    |
[INFO] [stdout] 17 |     assert!(stream.poll_next_unpin(&mut noop_context()).is_pending());
[INFO] [stdout]    |                                         ^^^^^^^^^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find function `noop_context` in this scope
[INFO] [stdout]   --> tests/futures_ordered.rs:40:18
[INFO] [stdout]    |
[INFO] [stdout] 40 |     let mut cx = noop_context();
[INFO] [stdout]    |                  ^^^^^^^^^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find function `noop_context` in this scope
[INFO] [stdout]   --> tests/futures_ordered.rs:73:19
[INFO] [stdout]    |
[INFO] [stdout] 73 |     let cx = &mut noop_context();
[INFO] [stdout]    |                   ^^^^^^^^^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find function `noop_context` in this scope
[INFO] [stdout]   --> tests/io_read_until.rs:30:18
[INFO] [stdout]    |
[INFO] [stdout] 30 |     let mut cx = noop_context();
[INFO] [stdout]    |                  ^^^^^^^^^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `run_in_background` found for struct `futures::future::MapOk<futures::channel::oneshot::Receiver<i32>, [closure@tests/oneshot.rs:13:16: 13:36]>` in the current scope
[INFO] [stdout]   --> tests/oneshot.rs:13:38
[INFO] [stdout]    |
[INFO] [stdout] 13 |     rx1.map_ok(move |x| tx2.send(x)).run_in_background();
[INFO] [stdout]    |                                      ^^^^^^^^^^^^^^^^^ method not found in `futures::future::MapOk<futures::channel::oneshot::Receiver<i32>, [closure@tests/oneshot.rs:13:16: 13:36]>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `run_in_background` found for struct `futures::future::MapOk<futures::channel::oneshot::Receiver<i32>, [closure@tests/oneshot.rs:24:16: 24:45]>` in the current scope
[INFO] [stdout]   --> tests/oneshot.rs:24:47
[INFO] [stdout]    |
[INFO] [stdout] 24 |     rx1.map_ok(move |x| tx2.send(x).unwrap()).run_in_background();
[INFO] [stdout]    |                                               ^^^^^^^^^^^^^^^^^ method not found in `futures::future::MapOk<futures::channel::oneshot::Receiver<i32>, [closure@tests/oneshot.rs:24:16: 24:45]>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `run_in_background` found for struct `futures::future::MapOk<futures::channel::oneshot::Receiver<i32>, [closure@tests/oneshot.rs:33:16: 33:45]>` in the current scope
[INFO] [stdout]   --> tests/oneshot.rs:33:47
[INFO] [stdout]    |
[INFO] [stdout] 33 |     rx1.map_ok(move |x| tx2.send(x).unwrap()).run_in_background();
[INFO] [stdout]    |                                               ^^^^^^^^^^^^^^^^^ method not found in `futures::future::MapOk<futures::channel::oneshot::Receiver<i32>, [closure@tests/oneshot.rs:33:16: 33:45]>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `run_in_background` found for struct `futures::future::Map<futures::channel::oneshot::Receiver<i32>, [closure@tests/oneshot.rs:44:13: 44:52]>` in the current scope
[INFO] [stdout]   --> tests/oneshot.rs:44:54
[INFO] [stdout]    |
[INFO] [stdout] 44 |     rx1.map(move |result| tx2.send(result).unwrap()).run_in_background();
[INFO] [stdout]    |                                                      ^^^^^^^^^^^^^^^^^ method not found in `futures::future::Map<futures::channel::oneshot::Receiver<i32>, [closure@tests/oneshot.rs:44:13: 44:52]>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `run_in_background` found for struct `futures::future::Map<futures::channel::oneshot::Receiver<i32>, [closure@tests/oneshot.rs:55:13: 55:52]>` in the current scope
[INFO] [stdout]   --> tests/oneshot.rs:55:54
[INFO] [stdout]    |
[INFO] [stdout] 55 |     rx1.map(move |result| tx2.send(result).unwrap()).run_in_background();
[INFO] [stdout]    |                                                      ^^^^^^^^^^^^^^^^^ method not found in `futures::future::Map<futures::channel::oneshot::Receiver<i32>, [closure@tests/oneshot.rs:55:13: 55:52]>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 6 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0433, E0599.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0433`.
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find function `noop_context` in this scope
[INFO] [stdout]   --> tests/io_read_to_string.rs:28:18
[INFO] [stdout]    |
[INFO] [stdout] 28 |     let mut cx = noop_context();
[INFO] [stdout]    |                  ^^^^^^^^^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 4 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0425, E0433.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0425`.
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `pending_once` found for struct `futures::future::Ready<Option<({integer}, {integer})>>` in the current scope
[INFO] [stdout]   --> tests/unfold.rs:13:57
[INFO] [stdout]    |
[INFO] [stdout] 13 |             future::ready(Some((state * 2, state + 1))).pending_once()
[INFO] [stdout]    |                                                         ^^^^^^^^^^^^ method not found in `futures::future::Ready<Option<({integer}, {integer})>>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `pending_once` found for struct `futures::future::Ready<Option<_>>` in the current scope
[INFO] [stdout]   --> tests/unfold.rs:15:33
[INFO] [stdout]    |
[INFO] [stdout] 15 |             future::ready(None).pending_once()
[INFO] [stdout]    |                                 ^^^^^^^^^^^^ method not found in `futures::future::Ready<Option<_>>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 12 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0432, E0433, E0599.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0432`.
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `interleave_pending` found for reference `&'static [u8; 2]` in the current scope
[INFO] [stdout]   --> tests/io_read_until.rs:40:25
[INFO] [stdout]    |
[INFO] [stdout] 40 |     let mut buf = b"12".interleave_pending();
[INFO] [stdout]    |                         ^^^^^^^^^^^^^^^^^^ method not found in `&'static [u8; 2]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `pending_once` found for struct `futures::future::Ready<()>` in the current scope
[INFO] [stdout]   --> tests/mutex.rs:53:23
[INFO] [stdout]    |
[INFO] [stdout] 53 |             ready(()).pending_once().await;
[INFO] [stdout]    |                       ^^^^^^^^^^^^ method not found in `futures::future::Ready<()>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `interleave_pending` found for struct `IntoAsyncRead<futures::stream::Map<futures::stream::Iter<std::vec::IntoIter<&[u8]>>, fn(&[u8]) -> std::result::Result<&[u8], std::io::Error> {std::result::Result::<&[u8], std::io::Error>::Ok}>>` in the current scope
[INFO] [stdout]   --> tests/io_read_until.rs:48:10
[INFO] [stdout]    |
[INFO] [stdout] 48 |         .interleave_pending();
[INFO] [stdout]    |          ^^^^^^^^^^^^^^^^^^ method not found in `IntoAsyncRead<futures::stream::Map<futures::stream::Iter<std::vec::IntoIter<&[u8]>>, fn(&[u8]) -> std::result::Result<&[u8], std::io::Error> {std::result::Result::<&[u8], std::io::Error>::Ok}>>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0698]: type inside `async` block must be known in this context
[INFO] [stdout]   --> tests/mutex.rs:52:28
[INFO] [stdout]    |
[INFO] [stdout] 52 |             let mut lock = mutex.lock().await;
[INFO] [stdout]    |                            ^^^^^ cannot infer type for type `{integer}`
[INFO] [stdout]    |
[INFO] [stdout] note: the type is part of the `async` block because of this `await`
[INFO] [stdout]   --> tests/mutex.rs:52:28
[INFO] [stdout]    |
[INFO] [stdout] 52 |             let mut lock = mutex.lock().await;
[INFO] [stdout]    |                            ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0698]: type inside `async` block must be known in this context
[INFO] [stdout]   --> tests/mutex.rs:52:28
[INFO] [stdout]    |
[INFO] [stdout] 52 |             let mut lock = mutex.lock().await;
[INFO] [stdout]    |                            ^^^^^^^^^^^^ cannot infer type for type `{integer}`
[INFO] [stdout]    |
[INFO] [stdout] note: the type is part of the `async` block because of this `await`
[INFO] [stdout]   --> tests/mutex.rs:52:28
[INFO] [stdout]    |
[INFO] [stdout] 52 |             let mut lock = mutex.lock().await;
[INFO] [stdout]    |                            ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0698]: type inside `async` block must be known in this context
[INFO] [stdout]   --> tests/mutex.rs:52:28
[INFO] [stdout]    |
[INFO] [stdout] 52 |             let mut lock = mutex.lock().await;
[INFO] [stdout]    |                            ^^^^^^^^^^^^^^^^^^ cannot infer type for type `{integer}`
[INFO] [stdout]    |
[INFO] [stdout] note: the type is part of the `async` block because of this `await`
[INFO] [stdout]   --> tests/mutex.rs:52:28
[INFO] [stdout]    |
[INFO] [stdout] 52 |             let mut lock = mutex.lock().await;
[INFO] [stdout]    |                            ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0698]: type inside `async` block must be known in this context
[INFO] [stdout]   --> tests/mutex.rs:52:17
[INFO] [stdout]    |
[INFO] [stdout] 52 |             let mut lock = mutex.lock().await;
[INFO] [stdout]    |                 ^^^^^^^^ cannot infer type for type `{integer}`
[INFO] [stdout]    |
[INFO] [stdout] note: the type is part of the `async` block because of this `await`
[INFO] [stdout]   --> tests/mutex.rs:53:13
[INFO] [stdout]    |
[INFO] [stdout] 53 |             ready(()).pending_once().await;
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0698]: type inside `async` block must be known in this context
[INFO] [stdout]   --> tests/mutex.rs:61:18
[INFO] [stdout]    |
[INFO] [stdout] 61 |         for _ in 0..num_tasks {
[INFO] [stdout]    |                  ^ cannot infer type for type `{integer}`
[INFO] [stdout]    |
[INFO] [stdout] note: the type is part of the `async` block because of this `await`
[INFO] [stdout]   --> tests/mutex.rs:62:22
[INFO] [stdout]    |
[INFO] [stdout] 62 |             let () = rx.next().await.unwrap();
[INFO] [stdout]    |                      ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0698]: type inside `async` block must be known in this context
[INFO] [stdout]   --> tests/mutex.rs:61:21
[INFO] [stdout]    |
[INFO] [stdout] 61 |         for _ in 0..num_tasks {
[INFO] [stdout]    |                     ^^^^^^^^^ cannot infer type for type `{integer}`
[INFO] [stdout]    |
[INFO] [stdout] note: the type is part of the `async` block because of this `await`
[INFO] [stdout]   --> tests/mutex.rs:62:22
[INFO] [stdout]    |
[INFO] [stdout] 62 |             let () = rx.next().await.unwrap();
[INFO] [stdout]    |                      ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0698]: type inside `async` block must be known in this context
[INFO] [stdout]   --> tests/mutex.rs:61:18
[INFO] [stdout]    |
[INFO] [stdout] 61 |         for _ in 0..num_tasks {
[INFO] [stdout]    |                  ^^^^^^^^^^^^ cannot infer type for type `{integer}`
[INFO] [stdout]    |
[INFO] [stdout] note: the type is part of the `async` block because of this `await`
[INFO] [stdout]   --> tests/mutex.rs:62:22
[INFO] [stdout]    |
[INFO] [stdout] 62 |             let () = rx.next().await.unwrap();
[INFO] [stdout]    |                      ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0698]: type inside `async` block must be known in this context
[INFO] [stdout]   --> tests/mutex.rs:61:18
[INFO] [stdout]    |
[INFO] [stdout] 61 |         for _ in 0..num_tasks {
[INFO] [stdout]    |                  ^^^^^^^^^^^^ cannot infer type for type `{integer}`
[INFO] [stdout]    |
[INFO] [stdout] note: the type is part of the `async` block because of this `await`
[INFO] [stdout]   --> tests/mutex.rs:62:22
[INFO] [stdout]    |
[INFO] [stdout] 62 |             let () = rx.next().await.unwrap();
[INFO] [stdout]    |                      ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0698]: type inside `async` block must be known in this context
[INFO] [stdout]   --> tests/mutex.rs:64:20
[INFO] [stdout]    |
[INFO] [stdout] 64 |         let lock = mutex.lock().await;
[INFO] [stdout]    |                    ^^^^^ cannot infer type for type `{integer}`
[INFO] [stdout]    |
[INFO] [stdout] note: the type is part of the `async` block because of this `await`
[INFO] [stdout]   --> tests/mutex.rs:64:20
[INFO] [stdout]    |
[INFO] [stdout] 64 |         let lock = mutex.lock().await;
[INFO] [stdout]    |                    ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0698]: type inside `async` block must be known in this context
[INFO] [stdout]   --> tests/mutex.rs:64:20
[INFO] [stdout]    |
[INFO] [stdout] 64 |         let lock = mutex.lock().await;
[INFO] [stdout]    |                    ^^^^^^^^^^^^ cannot infer type for type `{integer}`
[INFO] [stdout]    |
[INFO] [stdout] note: the type is part of the `async` block because of this `await`
[INFO] [stdout]   --> tests/mutex.rs:64:20
[INFO] [stdout]    |
[INFO] [stdout] 64 |         let lock = mutex.lock().await;
[INFO] [stdout]    |                    ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 4 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0425, E0433.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0425`.
[INFO] [stdout] 
[INFO] [stdout] error[E0698]: type inside `async` block must be known in this context
[INFO] [stdout]   --> tests/mutex.rs:64:20
[INFO] [stdout]    |
[INFO] [stdout] 64 |         let lock = mutex.lock().await;
[INFO] [stdout]    |                    ^^^^^^^^^^^^^^^^^^ cannot infer type for type `{integer}`
[INFO] [stdout]    |
[INFO] [stdout] note: the type is part of the `async` block because of this `await`
[INFO] [stdout]   --> tests/mutex.rs:64:20
[INFO] [stdout]    |
[INFO] [stdout] 64 |         let lock = mutex.lock().await;
[INFO] [stdout]    |                    ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 18 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0425, E0433, E0599, E0698.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0425`.
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 5 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0425, E0433, E0599.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0425`.
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `interleave_pending` found for struct `IntoAsyncRead<futures::stream::Map<futures::stream::Iter<std::vec::IntoIter<&[u8]>>, fn(&[u8]) -> std::result::Result<&[u8], std::io::Error> {std::result::Result::<&[u8], std::io::Error>::Ok}>>` in the current scope
[INFO] [stdout]   --> tests/io_read_to_string.rs:41:10
[INFO] [stdout]    |
[INFO] [stdout] 41 |         .interleave_pending();
[INFO] [stdout]    |          ^^^^^^^^^^^^^^^^^^ method not found in `IntoAsyncRead<futures::stream::Map<futures::stream::Iter<std::vec::IntoIter<&[u8]>>, fn(&[u8]) -> std::result::Result<&[u8], std::io::Error> {std::result::Result::<&[u8], std::io::Error>::Ok}>>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 4 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0425, E0433, E0599.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0425`.
[INFO] [stdout] 
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "9c1103a900e97eed53b5cfd79dae277c9e2aad2a8553b5e05a66cc773d0fa8bb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9c1103a900e97eed53b5cfd79dae277c9e2aad2a8553b5e05a66cc773d0fa8bb", kill_on_drop: false }`
[INFO] [stdout] 9c1103a900e97eed53b5cfd79dae277c9e2aad2a8553b5e05a66cc773d0fa8bb