[INFO] crate ring-channel 0.5.0 is already in cache
[INFO] extracting crate ring-channel 0.5.0 into work/ex/beta-1.38-1/sources/1.37.0/reg/ring-channel/0.5.0
[INFO] extracting crate ring-channel 0.5.0 into work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/ring-channel/0.5.0
[INFO] validating manifest of ring-channel-0.5.0 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 ring-channel-0.5.0 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 ring-channel-0.5.0
[INFO] finished frobbing ring-channel-0.5.0
[INFO] frobbed toml for ring-channel-0.5.0 written to work/ex/beta-1.38-1/sources/1.37.0/reg/ring-channel/0.5.0/Cargo.toml
[INFO] started frobbing ring-channel-0.5.0
[INFO] finished frobbing ring-channel-0.5.0
[INFO] frobbed toml for ring-channel-0.5.0 written to work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/ring-channel/0.5.0/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] 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 ring-channel-0.5.0 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-7/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/ring-channel/0.5.0:/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] a30cb25931c6c934ebeb6fb535c88eb1b88cf47b2c0ec76fb5e9c4670996b055
[INFO] running `"docker" "start" "-a" "a30cb25931c6c934ebeb6fb535c88eb1b88cf47b2c0ec76fb5e9c4670996b055"`
[INFO] [stderr]    Compiling futures-core-preview v0.3.0-alpha.18
[INFO] [stderr]    Compiling memchr v2.2.1
[INFO] [stderr]    Compiling pin-utils v0.1.0-alpha.4
[INFO] [stderr]    Compiling futures-io-preview v0.3.0-alpha.18
[INFO] [stderr]    Compiling futures-sink-preview v0.3.0-alpha.18
[INFO] [stderr]    Compiling futures-channel-preview v0.3.0-alpha.18
[INFO] [stderr]    Compiling futures-util-preview v0.3.0-alpha.18
[INFO] [stderr]    Compiling futures-executor-preview v0.3.0-alpha.18
[INFO] [stderr]    Compiling futures-preview v0.3.0-alpha.18
[INFO] [stderr]    Compiling ring-channel v0.5.0 (/opt/crater/workdir)
[INFO] [stderr] error[E0437]: type `SinkError` is not a member of trait `Sink`
[INFO] [stderr]  --> src/futures.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 |     type SinkError = SendError<T>;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ not a member of trait `Sink`
[INFO] [stderr] 
[INFO] [stderr] error[E0220]: associated type `SinkError` not found for `Self`
[INFO] [stderr]  --> src/futures.rs:9:81
[INFO] [stderr]   |
[INFO] [stderr] 9 |     fn poll_ready(self: Pin<&mut Self>, _: &mut Context<'_>) -> Poll<Result<(), Self::SinkError>> {
[INFO] [stderr]   |                                                                                 ^^^^^^^^^^^^^^^ associated type `SinkError` not found
[INFO] [stderr] 
[INFO] [stderr] error[E0220]: associated type `SinkError` not found for `Self`
[INFO] [stderr]   --> src/futures.rs:13:64
[INFO] [stderr]    |
[INFO] [stderr] 13 |     fn start_send(self: Pin<&mut Self>, item: T) -> Result<(), Self::SinkError> {
[INFO] [stderr]    |                                                                ^^^^^^^^^^^^^^^ associated type `SinkError` not found
[INFO] [stderr] 
[INFO] [stderr] error[E0220]: associated type `SinkError` not found for `Self`
[INFO] [stderr]   --> src/futures.rs:17:81
[INFO] [stderr]    |
[INFO] [stderr] 17 |     fn poll_flush(self: Pin<&mut Self>, _: &mut Context<'_>) -> Poll<Result<(), Self::SinkError>> {
[INFO] [stderr]    |                                                                                 ^^^^^^^^^^^^^^^ associated type `SinkError` not found
[INFO] [stderr] 
[INFO] [stderr] error[E0220]: associated type `SinkError` not found for `Self`
[INFO] [stderr]   --> src/futures.rs:21:81
[INFO] [stderr]    |
[INFO] [stderr] 21 |     fn poll_close(self: Pin<&mut Self>, _: &mut Context<'_>) -> Poll<Result<(), Self::SinkError>> {
[INFO] [stderr]    |                                                                                 ^^^^^^^^^^^^^^^ associated type `SinkError` not found
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 5 previous errors
[INFO] [stderr] 
[INFO] [stderr] Some errors have detailed explanations: E0220, E0437.
[INFO] [stderr] For more information about an error, try `rustc --explain E0220`.
[INFO] [stderr] error: Could not compile `ring-channel`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "a30cb25931c6c934ebeb6fb535c88eb1b88cf47b2c0ec76fb5e9c4670996b055"`
[INFO] running `"docker" "rm" "-f" "a30cb25931c6c934ebeb6fb535c88eb1b88cf47b2c0ec76fb5e9c4670996b055"`
[INFO] [stdout] a30cb25931c6c934ebeb6fb535c88eb1b88cf47b2c0ec76fb5e9c4670996b055