[INFO] fetching crate futures-core-preview 0.3.0-alpha.17...
[INFO] extracting crate futures-core-preview 0.3.0-alpha.17 into work/ex/beta-1.37-6/sources/1.36.0/reg/futures-core-preview/0.3.0-alpha.17
[INFO] extracting crate futures-core-preview 0.3.0-alpha.17 into work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/futures-core-preview/0.3.0-alpha.17
[INFO] validating manifest of futures-core-preview-0.3.0-alpha.17 on toolchain 1.36.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of futures-core-preview-0.3.0-alpha.17 on toolchain beta-2019-07-23
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing futures-core-preview-0.3.0-alpha.17
[INFO] finished frobbing futures-core-preview-0.3.0-alpha.17
[INFO] frobbed toml for futures-core-preview-0.3.0-alpha.17 written to work/ex/beta-1.37-6/sources/1.36.0/reg/futures-core-preview/0.3.0-alpha.17/Cargo.toml
[INFO] started frobbing futures-core-preview-0.3.0-alpha.17
[INFO] finished frobbing futures-core-preview-0.3.0-alpha.17
[INFO] frobbed toml for futures-core-preview-0.3.0-alpha.17 written to work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/futures-core-preview/0.3.0-alpha.17/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing futures-core-preview-0.3.0-alpha.17 against beta-2019-07-23 for beta-1.37-6
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-6/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/futures-core-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-2019-07-23" "build" "--frozen"`
[INFO] [stdout] de16b64f0feea31b5ee61a1b75962d5e79b01e65a7325ff7765e9176a203497c
[INFO] running `"docker" "start" "-a" "de16b64f0feea31b5ee61a1b75962d5e79b01e65a7325ff7765e9176a203497c"`
[INFO] [stderr]    Compiling futures-core-preview v0.3.0-alpha.17 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.40s
[INFO] running `"docker" "inspect" "de16b64f0feea31b5ee61a1b75962d5e79b01e65a7325ff7765e9176a203497c"`
[INFO] running `"docker" "rm" "-f" "de16b64f0feea31b5ee61a1b75962d5e79b01e65a7325ff7765e9176a203497c"`
[INFO] [stdout] de16b64f0feea31b5ee61a1b75962d5e79b01e65a7325ff7765e9176a203497c
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-6/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/futures-core-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-2019-07-23" "test" "--frozen" "--no-run"`
[INFO] [stdout] c9db59d3ecd8e361681b9ec1cad7c7ddc18eda9ef3b5dcb280dc3415609d5110
[INFO] running `"docker" "start" "-a" "c9db59d3ecd8e361681b9ec1cad7c7ddc18eda9ef3b5dcb280dc3415609d5110"`
[INFO] [stderr]    Compiling futures-core-preview v0.3.0-alpha.17 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.56s
[INFO] running `"docker" "inspect" "c9db59d3ecd8e361681b9ec1cad7c7ddc18eda9ef3b5dcb280dc3415609d5110"`
[INFO] running `"docker" "rm" "-f" "c9db59d3ecd8e361681b9ec1cad7c7ddc18eda9ef3b5dcb280dc3415609d5110"`
[INFO] [stdout] c9db59d3ecd8e361681b9ec1cad7c7ddc18eda9ef3b5dcb280dc3415609d5110
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-6/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/futures-core-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-2019-07-23" "test" "--frozen"`
[INFO] [stdout] d919cbf8a6b9c96f71a4bebd2f8bb4cf3b7457784b126172deaeefc503120786
[INFO] running `"docker" "start" "-a" "d919cbf8a6b9c96f71a4bebd2f8bb4cf3b7457784b126172deaeefc503120786"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/futures_core-07b7902ec00bf2dc
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests futures_core
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test src/task/__internal/atomic_waker.rs - task::__internal::atomic_waker::AtomicWaker::register (line 171) ... FAILED
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- src/task/__internal/atomic_waker.rs - task::__internal::atomic_waker::AtomicWaker::register (line 171) stdout ----
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type or module `futures`
[INFO] [stdout]  --> src/task/__internal/atomic_waker.rs:172:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use futures::future::Future;
[INFO] [stdout]   |     ^^^^^^^ use of undeclared type or module `futures`
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type or module `futures`
[INFO] [stdout]  --> src/task/__internal/atomic_waker.rs:173:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use futures::task::{Context, Poll, AtomicWaker};
[INFO] [stdout]   |     ^^^^^^^ use of undeclared type or module `futures`
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type or module `Poll`
[INFO] [stdout]   --> src/task/__internal/atomic_waker.rs:192:13
[INFO] [stdout]    |
[INFO] [stdout] 24 |             Poll::Ready(())
[INFO] [stdout]    |             ^^^^ use of undeclared type or module `Poll`
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type or module `Poll`
[INFO] [stdout]   --> src/task/__internal/atomic_waker.rs:194:13
[INFO] [stdout]    |
[INFO] [stdout] 26 |             Poll::Pending
[INFO] [stdout]    |             ^^^^ use of undeclared type or module `Poll`
[INFO] [stdout] 
[INFO] [stdout] error[E0412]: cannot find type `AtomicWaker` in this scope
[INFO] [stdout]   --> src/task/__internal/atomic_waker.rs:179:12
[INFO] [stdout]    |
[INFO] [stdout] 11 |     waker: AtomicWaker,
[INFO] [stdout]    |            ^^^^^^^^^^^ not found in this scope
[INFO] [stdout] help: possible candidate is found in another module, you can import it into scope
[INFO] [stdout]    |
[INFO] [stdout] 3  | use futures_core::task::__internal::AtomicWaker;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] error[E0405]: cannot find trait `Future` in this scope
[INFO] [stdout]   --> src/task/__internal/atomic_waker.rs:183:6
[INFO] [stdout]    |
[INFO] [stdout] 15 | impl Future for Flag {
[INFO] [stdout]    |      ^^^^^^ not found in this scope
[INFO] [stdout] help: possible candidates are found in other modules, you can import them into scope
[INFO] [stdout]    |
[INFO] [stdout] 3  | use core::future::Future;
[INFO] [stdout]    |
[INFO] [stdout] 3  | use futures_core::Future;
[INFO] [stdout]    |
[INFO] [stdout] 3  | use futures_core::core_reexport::future::Future;
[INFO] [stdout]    |
[INFO] [stdout] 3  | use futures_core::future::Future;
[INFO] [stdout]    |
[INFO] [stdout] and 1 other candidates
[INFO] [stdout] 
[INFO] [stdout] error[E0412]: cannot find type `Context` in this scope
[INFO] [stdout]   --> src/task/__internal/atomic_waker.rs:186:44
[INFO] [stdout]    |
[INFO] [stdout] 18 |     fn poll(self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<()> {
[INFO] [stdout]    |                                            ^^^^^^^ not found in this scope
[INFO] [stdout] help: possible candidates are found in other modules, you can import them into scope
[INFO] [stdout]    |
[INFO] [stdout] 3  | use core::task::Context;
[INFO] [stdout]    |
[INFO] [stdout] 3  | use futures_core::core_reexport::task::Context;
[INFO] [stdout]    |
[INFO] [stdout] 3  | use futures_core::task::Context;
[INFO] [stdout]    |
[INFO] [stdout] 3  | use std::task::Context;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] error[E0412]: cannot find type `Poll` in this scope
[INFO] [stdout]   --> src/task/__internal/atomic_waker.rs:186:60
[INFO] [stdout]    |
[INFO] [stdout] 18 |     fn poll(self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<()> {
[INFO] [stdout]    |                                                            ^^^^ not found in this scope
[INFO] [stdout] help: possible candidates are found in other modules, you can import them into scope
[INFO] [stdout]    |
[INFO] [stdout] 3  | use core::task::Poll;
[INFO] [stdout]    |
[INFO] [stdout] 3  | use futures_core::Poll;
[INFO] [stdout]    |
[INFO] [stdout] 3  | use futures_core::core_reexport::task::Poll;
[INFO] [stdout]    |
[INFO] [stdout] 3  | use futures_core::task::Poll;
[INFO] [stdout]    |
[INFO] [stdout] and 1 other candidates
[INFO] [stdout] 
[INFO] [stdout] error: unused import: `futures::future::Future`
[INFO] [stdout]  --> src/task/__internal/atomic_waker.rs:172:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use futures::future::Future;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout] note: lint level defined here
[INFO] [stdout]  --> src/task/__internal/atomic_waker.rs:169:9
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![deny(warnings)]
[INFO] [stdout]   |         ^^^^^^^^
[INFO] [stdout]   = note: #[deny(unused_imports)] implied by #[deny(warnings)]
[INFO] [stdout] 
[INFO] [stdout] error: unused imports: `AtomicWaker`, `Context`, `Poll`
[INFO] [stdout]  --> src/task/__internal/atomic_waker.rs:173:21
[INFO] [stdout]   |
[INFO] [stdout] 5 | use futures::task::{Context, Poll, AtomicWaker};
[INFO] [stdout]   |                     ^^^^^^^  ^^^^  ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 10 previous errors
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0405, E0412, E0433.
[INFO] [stdout] For more information about an error, try `rustc --explain E0405`.
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout]     src/task/__internal/atomic_waker.rs - task::__internal::atomic_waker::AtomicWaker::register (line 171)
[INFO] [stdout] 
[INFO] [stdout] test result: FAILED. 0 passed; 1 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr] error: test failed, to rerun pass '--doc'
[INFO] running `"docker" "inspect" "d919cbf8a6b9c96f71a4bebd2f8bb4cf3b7457784b126172deaeefc503120786"`
[INFO] running `"docker" "rm" "-f" "d919cbf8a6b9c96f71a4bebd2f8bb4cf3b7457784b126172deaeefc503120786"`
[INFO] [stdout] d919cbf8a6b9c96f71a4bebd2f8bb4cf3b7457784b126172deaeefc503120786