[INFO] crate futures_future 0.1.1 is already in cache
[INFO] extracting crate futures_future 0.1.1 into work/ex/beta-1.38-1/sources/1.37.0/reg/futures_future/0.1.1
[INFO] extracting crate futures_future 0.1.1 into work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/futures_future/0.1.1
[INFO] validating manifest of futures_future-0.1.1 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_future-0.1.1 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_future-0.1.1
[INFO] finished frobbing futures_future-0.1.1
[INFO] frobbed toml for futures_future-0.1.1 written to work/ex/beta-1.38-1/sources/1.37.0/reg/futures_future/0.1.1/Cargo.toml
[INFO] started frobbing futures_future-0.1.1
[INFO] finished frobbing futures_future-0.1.1
[INFO] frobbed toml for futures_future-0.1.1 written to work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/futures_future/0.1.1/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] testing futures_future-0.1.1 against 1.37.0 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-0/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/reg/futures_future/0.1.1:/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" "+1.37.0" "build" "--frozen"`
[INFO] [stdout] 1ce4640d85e71e222111b4b5572bf9f2c5871eb597084d19675a9d403e08135f
[INFO] running `"docker" "start" "-a" "1ce4640d85e71e222111b4b5572bf9f2c5871eb597084d19675a9d403e08135f"`
[INFO] [stderr]    Compiling futures_future v0.1.1 (/opt/crater/workdir)
[INFO] [stderr] error[E0412]: cannot find type `LocalWaker` in module `task`
[INFO] [stderr]   --> src/lib.rs:18:47
[INFO] [stderr]    |
[INFO] [stderr] 18 |     fn poll(self: Pin<&mut Self>, _lw: &task::LocalWaker) -> task::Poll<Result<T,E>> {
[INFO] [stderr]    |                                               ^^^^^^^^^^ not found in `task`
[INFO] [stderr] 
[INFO] [stderr] error[E0554]: #![feature] may not be used on the stable release channel
[INFO] [stderr]  --> src/lib.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | #![feature(pin)]
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error[E0554]: #![feature] may not be used on the stable release channel
[INFO] [stderr]  --> src/lib.rs:2:1
[INFO] [stderr]   |
[INFO] [stderr] 2 | #![feature(arbitrary_self_types)]
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error[E0554]: #![feature] may not be used on the stable release channel
[INFO] [stderr]  --> src/lib.rs:3:1
[INFO] [stderr]   |
[INFO] [stderr] 3 | #![feature(futures_api)]
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 4 previous errors
[INFO] [stderr] 
[INFO] [stderr] Some errors have detailed explanations: E0412, E0554.
[INFO] [stderr] For more information about an error, try `rustc --explain E0412`.
[INFO] [stderr] error: Could not compile `futures_future`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "1ce4640d85e71e222111b4b5572bf9f2c5871eb597084d19675a9d403e08135f"`
[INFO] running `"docker" "rm" "-f" "1ce4640d85e71e222111b4b5572bf9f2c5871eb597084d19675a9d403e08135f"`
[INFO] [stdout] 1ce4640d85e71e222111b4b5572bf9f2c5871eb597084d19675a9d403e08135f