[INFO] crate futures-preview 0.3.0-alpha.17 is already in cache
[INFO] extracting crate futures-preview 0.3.0-alpha.17 into work/ex/beta-1.38-1/sources/1.37.0/reg/futures-preview/0.3.0-alpha.17
[INFO] extracting crate futures-preview 0.3.0-alpha.17 into work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/futures-preview/0.3.0-alpha.17
[INFO] validating manifest of futures-preview-0.3.0-alpha.17 on toolchain 1.37.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of futures-preview-0.3.0-alpha.17 on toolchain beta-2019-08-13
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing futures-preview-0.3.0-alpha.17
[INFO] finished frobbing futures-preview-0.3.0-alpha.17
[INFO] frobbed toml for futures-preview-0.3.0-alpha.17 written to work/ex/beta-1.38-1/sources/1.37.0/reg/futures-preview/0.3.0-alpha.17/Cargo.toml
[INFO] started frobbing futures-preview-0.3.0-alpha.17
[INFO] finished frobbing futures-preview-0.3.0-alpha.17
[INFO] frobbed toml for futures-preview-0.3.0-alpha.17 written to work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/futures-preview/0.3.0-alpha.17/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] testing futures-preview-0.3.0-alpha.17 against beta-2019-08-13 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-0/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/futures-preview/0.3.0-alpha.17:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+beta-2019-08-13" "build" "--frozen"`
[INFO] [stdout] fd53b644d1c3acfafa07610e32af13611b34cbe93d9c4ed00b37cc00527cd05e
[INFO] running `"docker" "start" "-a" "fd53b644d1c3acfafa07610e32af13611b34cbe93d9c4ed00b37cc00527cd05e"`
[INFO] [stderr]    Compiling futures-util-preview v0.3.0-alpha.17
[INFO] [stderr]    Compiling futures-executor-preview v0.3.0-alpha.17
[INFO] [stderr]    Compiling futures-preview v0.3.0-alpha.17 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 5.10s
[INFO] running `"docker" "inspect" "fd53b644d1c3acfafa07610e32af13611b34cbe93d9c4ed00b37cc00527cd05e"`
[INFO] running `"docker" "rm" "-f" "fd53b644d1c3acfafa07610e32af13611b34cbe93d9c4ed00b37cc00527cd05e"`
[INFO] [stdout] fd53b644d1c3acfafa07610e32af13611b34cbe93d9c4ed00b37cc00527cd05e
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-0/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/futures-preview/0.3.0-alpha.17:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+beta-2019-08-13" "test" "--frozen" "--no-run"`
[INFO] [stdout] 3e770e98e6a2d32338a51ea8e9ca2d8d8b7b4134c038a6530ee711815290430e
[INFO] running `"docker" "start" "-a" "3e770e98e6a2d32338a51ea8e9ca2d8d8b7b4134c038a6530ee711815290430e"`
[INFO] [stderr]    Compiling futures-preview v0.3.0-alpha.17 (/opt/crater/workdir)
[INFO] [stderr] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stderr]  --> tests/join_all.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | #![feature(async_await)]
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `futures_test`
[INFO] [stderr]  --> tests/io_lines.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_lines.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: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0554`.
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `futures_test`
[INFO] [stderr]  --> tests/unfold.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: Could not compile `futures-preview`.
[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/stream_select_next_some.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 | 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:8:5
[INFO] [stderr]   |
[INFO] [stderr] 8 | use futures_test::task::new_count_waker;
[INFO] [stderr]   |     ^^^^^^^^^^^^ use of undeclared type or module `futures_test`
[INFO] [stderr] 
[INFO] [stderr] error[E0432]: unresolved import `futures::select`
[INFO] [stderr]  --> tests/stream_select_next_some.rs:3:23
[INFO] [stderr]   |
[INFO] [stderr] 3 | use futures::{future, select};
[INFO] [stderr]   |                       ^^^^^^ no `select` in the root
[INFO] [stderr] 
[INFO] [stderr] error[E0432]: unresolved import `futures_util::select`
[INFO] [stderr]   --> tests/stream_select_next_some.rs:63:9
[INFO] [stderr]    |
[INFO] [stderr] 63 |     use futures_util::select;
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^ no `select` in the root
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `futures_test`
[INFO] [stderr]  --> tests/futures_unordered.rs:6:5
[INFO] [stderr]   |
[INFO] [stderr] 6 | 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/futures_unordered.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[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stderr]  --> tests/future_obj.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | #![feature(async_await)]
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0554`.
[INFO] [stderr] error: Could not compile `futures-preview`.
[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/io_lines.rs:31:18
[INFO] [stderr]    |
[INFO] [stderr] 31 |     let mut cx = noop_context();
[INFO] [stderr]    |                  ^^^^^^^^^^^^ not found in this scope
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `futures_test::io::AsyncReadTestExt`
[INFO] [stderr]  --> tests/io_lines.rs:6:5
[INFO] [stderr]   |
[INFO] [stderr] 6 | use futures_test::io::AsyncReadTestExt;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `futures_test::task::noop_context`
[INFO] [stderr]  --> tests/io_lines.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 | use futures_test::task::noop_context;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: cannot determine resolution for the macro `select`
[INFO] [stderr]   --> tests/stream_select_next_some.rs:45:13
[INFO] [stderr]    |
[INFO] [stderr] 45 |             select! {
[INFO] [stderr]    |             ^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: import resolution is stuck, try simplifying macro imports
[INFO] [stderr] 
[INFO] [stderr] error: cannot determine resolution for the macro `select`
[INFO] [stderr]   --> tests/stream_select_next_some.rs:74:13
[INFO] [stderr]    |
[INFO] [stderr] 74 |             select! {
[INFO] [stderr]    |             ^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: import resolution is stuck, try simplifying macro imports
[INFO] [stderr] 
[INFO] [stderr] error[E0425]: cannot find function `new_count_waker` in this scope
[INFO] [stderr]   --> tests/stream_select_next_some.rs:12:28
[INFO] [stderr]    |
[INFO] [stderr] 12 |     let (waker, counter) = new_count_waker();
[INFO] [stderr]    |                            ^^^^^^^^^^^^^^^ not found in this scope
[INFO] [stderr] 
[INFO] [stderr] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stderr]  --> tests/stream_select_next_some.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | #![feature(async_await)]
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `futures_test::future::FutureTestExt`
[INFO] [stderr]  --> tests/stream_select_next_some.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 | use futures_test::future::FutureTestExt;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `futures_test::task::new_count_waker`
[INFO] [stderr]  --> tests/stream_select_next_some.rs:8:5
[INFO] [stderr]   |
[INFO] [stderr] 8 | use futures_test::task::new_count_waker;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error[E0599]: no method named `interleave_pending` found for type `futures_util::try_stream::into_async_read::IntoAsyncRead<futures_util::stream::map::Map<futures_util::stream::iter::Iter<std::vec::IntoIter<&[u8]>>, fn(&[u8]) -> std::result::Result<&[u8], std::io::error::Error> {std::result::Result::<&[u8], std::io::error::Error>::Ok}>>` in the current scope
[INFO] [stderr]   --> tests/io_lines.rs:50:10
[INFO] [stderr]    |
[INFO] [stderr] 50 |         .interleave_pending();
[INFO] [stderr]    |          ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error[E0599]: no method named `interleave_pending` found for type `futures_util::try_stream::into_async_read::IntoAsyncRead<futures_util::stream::map::Map<futures_util::stream::iter::Iter<std::vec::IntoIter<&[u8]>>, fn(&[u8]) -> std::result::Result<&[u8], std::io::error::Error> {std::result::Result::<&[u8], std::io::error::Error>::Ok}>>` in the current scope
[INFO] [stderr]   --> tests/io_lines.rs:58:10
[INFO] [stderr]    |
[INFO] [stderr] 58 |         .interleave_pending();
[INFO] [stderr]    |          ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 5 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-preview`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[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:41:40
[INFO] [stderr]    |
[INFO] [stderr] 41 |         let mut fut = future::ready(1).pending_once();
[INFO] [stderr]    |                                        ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unreachable statement
[INFO] [stderr]   --> tests/stream_select_next_some.rs:56:9
[INFO] [stderr]    |
[INFO] [stderr] 56 |         assert_eq!(total, 6);
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unreachable_code)]` on by default
[INFO] [stderr]    = note: this warning 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:70:40
[INFO] [stderr]    |
[INFO] [stderr] 70 |         let mut fut = future::ready(1).pending_once();
[INFO] [stderr]    |                                        ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unreachable statement
[INFO] [stderr]   --> tests/stream_select_next_some.rs:85:9
[INFO] [stderr]    |
[INFO] [stderr] 85 |         assert_eq!(total, 6);
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning 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 10 previous errors
[INFO] [stderr] 
[INFO] [stderr] Some errors have detailed explanations: E0425, E0432, E0433, E0554, E0599.
[INFO] [stderr] For more information about an error, try `rustc --explain E0425`.
[INFO] [stderr] error: Could not compile `futures-preview`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error[E0432]: unresolved import `futures_test`
[INFO] [stderr]  --> tests/unfold.rs:5:5
[INFO] [stderr]   |
[INFO] [stderr] 5 | use futures_test::{
[INFO] [stderr]   |     ^^^^^^^^^^^^ use of undeclared type or module `futures_test`
[INFO] [stderr] 
[INFO] [stderr] error: cannot determine resolution for the macro `assert_stream_pending`
[INFO] [stderr]   --> tests/unfold.rs:21:5
[INFO] [stderr]    |
[INFO] [stderr] 21 |     assert_stream_pending!(stream);
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: import resolution is stuck, try simplifying macro imports
[INFO] [stderr] 
[INFO] [stderr] error: cannot determine resolution for the macro `assert_stream_next`
[INFO] [stderr]   --> tests/unfold.rs:23:5
[INFO] [stderr]    |
[INFO] [stderr] 23 |     assert_stream_next!(stream, 0);
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: import resolution is stuck, try simplifying macro imports
[INFO] [stderr] 
[INFO] [stderr] error: cannot determine resolution for the macro `assert_stream_pending`
[INFO] [stderr]   --> tests/unfold.rs:26:5
[INFO] [stderr]    |
[INFO] [stderr] 26 |     assert_stream_pending!(stream);
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: import resolution is stuck, try simplifying macro imports
[INFO] [stderr] 
[INFO] [stderr] error: cannot determine resolution for the macro `assert_stream_next`
[INFO] [stderr]   --> tests/unfold.rs:27:5
[INFO] [stderr]    |
[INFO] [stderr] 27 |     assert_stream_next!(stream, 2);
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: import resolution is stuck, try simplifying macro imports
[INFO] [stderr] 
[INFO] [stderr] error: cannot determine resolution for the macro `assert_stream_pending`
[INFO] [stderr]   --> tests/unfold.rs:29:5
[INFO] [stderr]    |
[INFO] [stderr] 29 |     assert_stream_pending!(stream);
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: import resolution is stuck, try simplifying macro imports
[INFO] [stderr] 
[INFO] [stderr] error: cannot determine resolution for the macro `assert_stream_next`
[INFO] [stderr]   --> tests/unfold.rs:30:5
[INFO] [stderr]    |
[INFO] [stderr] 30 |     assert_stream_next!(stream, 4);
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: import resolution is stuck, try simplifying macro imports
[INFO] [stderr] 
[INFO] [stderr] error: cannot determine resolution for the macro `assert_stream_pending`
[INFO] [stderr]   --> tests/unfold.rs:33:5
[INFO] [stderr]    |
[INFO] [stderr] 33 |     assert_stream_pending!(stream);
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: import resolution is stuck, try simplifying macro imports
[INFO] [stderr] 
[INFO] [stderr] error: cannot determine resolution for the macro `assert_stream_done`
[INFO] [stderr]   --> tests/unfold.rs:34:5
[INFO] [stderr]    |
[INFO] [stderr] 34 |     assert_stream_done!(stream);
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: import resolution is stuck, try simplifying macro imports
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `futures_test::future::FutureTestExt`
[INFO] [stderr]  --> tests/unfold.rs:4:5
[INFO] [stderr]   |
[INFO] [stderr] 4 | use futures_test::future::FutureTestExt;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] error[E0599]: no method named `pending_once` found for type `futures_util::future::ready::Ready<std::option::Option<({integer}, {integer})>>` in the current scope
[INFO] [stderr]   --> tests/unfold.rs:13:57
[INFO] [stderr]    |
[INFO] [stderr] 13 |             future::ready(Some((state * 2, state + 1))).pending_once()
[INFO] [stderr]    |                                                         ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error[E0599]: no method named `pending_once` found for type `futures_util::future::ready::Ready<std::option::Option<_>>` in the current scope
[INFO] [stderr]   --> tests/unfold.rs:15:33
[INFO] [stderr]    |
[INFO] [stderr] 15 |             future::ready(None).pending_once()
[INFO] [stderr]    |                                 ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 12 previous errors
[INFO] [stderr] 
[INFO] [stderr] Some errors have detailed explanations: E0432, E0433, E0599.
[INFO] [stderr] For more information about an error, try `rustc --explain E0432`.
[INFO] [stderr] error: Could not compile `futures-preview`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error[E0432]: unresolved import `futures_test`
[INFO] [stderr]  --> tests/futures_unordered.rs:8:5
[INFO] [stderr]   |
[INFO] [stderr] 8 | use futures_test::{assert_stream_done, assert_stream_next};
[INFO] [stderr]   |     ^^^^^^^^^^^^ use of undeclared type or module `futures_test`
[INFO] [stderr] 
[INFO] [stderr] error: cannot determine resolution for the macro `assert_stream_next`
[INFO] [stderr]    --> tests/futures_unordered.rs:173:5
[INFO] [stderr]     |
[INFO] [stderr] 173 |     assert_stream_next!(stream, ());
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: import resolution is stuck, try simplifying macro imports
[INFO] [stderr] 
[INFO] [stderr] error: cannot determine resolution for the macro `assert_stream_next`
[INFO] [stderr]    --> tests/futures_unordered.rs:174:5
[INFO] [stderr]     |
[INFO] [stderr] 174 |     assert_stream_next!(stream, ());
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: import resolution is stuck, try simplifying macro imports
[INFO] [stderr] 
[INFO] [stderr] error: cannot determine resolution for the macro `assert_stream_next`
[INFO] [stderr]    --> tests/futures_unordered.rs:175:5
[INFO] [stderr]     |
[INFO] [stderr] 175 |     assert_stream_next!(stream, ());
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: import resolution is stuck, try simplifying macro imports
[INFO] [stderr] 
[INFO] [stderr] error: cannot determine resolution for the macro `assert_stream_done`
[INFO] [stderr]    --> tests/futures_unordered.rs:176:5
[INFO] [stderr]     |
[INFO] [stderr] 176 |     assert_stream_done!(stream);
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: import resolution is stuck, try simplifying macro imports
[INFO] [stderr] 
[INFO] [stderr] error[E0425]: cannot find function `noop_context` in this scope
[INFO] [stderr]   --> tests/futures_unordered.rs:12:18
[INFO] [stderr]    |
[INFO] [stderr] 12 |     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_unordered.rs:75:18
[INFO] [stderr]    |
[INFO] [stderr] 75 |     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_unordered.rs:108:19
[INFO] [stderr]     |
[INFO] [stderr] 108 |     let cx = &mut noop_context();
[INFO] [stderr]     |                   ^^^^^^^^^^^^ not found in this scope
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `futures_test::future::FutureTestExt`
[INFO] [stderr]  --> tests/futures_unordered.rs:6:5
[INFO] [stderr]   |
[INFO] [stderr] 6 | use futures_test::future::FutureTestExt;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `futures_test::task::noop_context`
[INFO] [stderr]  --> tests/futures_unordered.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 | use futures_test::task::noop_context;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error[E0599]: no method named `pending_once` found for type `futures_util::future::ready::Ready<()>` in the current scope
[INFO] [stderr]    --> tests/futures_unordered.rs:171:33
[INFO] [stderr]     |
[INFO] [stderr] 171 |     let fut = future::ready(()).pending_once().assert_unmoved();
[INFO] [stderr]     |                                 ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 11 previous errors
[INFO] [stderr] 
[INFO] [stderr] Some errors have detailed explanations: E0425, E0432, E0433, E0599.
[INFO] [stderr] For more information about an error, try `rustc --explain E0425`.
[INFO] [stderr] error: Could not compile `futures-preview`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "3e770e98e6a2d32338a51ea8e9ca2d8d8b7b4134c038a6530ee711815290430e"`
[INFO] running `"docker" "rm" "-f" "3e770e98e6a2d32338a51ea8e9ca2d8d8b7b4134c038a6530ee711815290430e"`
[INFO] [stdout] 3e770e98e6a2d32338a51ea8e9ca2d8d8b7b4134c038a6530ee711815290430e