[INFO] crate futures-intrusive 0.1.1 is already in cache
[INFO] extracting crate futures-intrusive 0.1.1 into work/ex/pr-63247/sources/master#452087b4bf18cece2d52d7cd8c9147195e5404bf/reg/futures-intrusive/0.1.1
[INFO] extracting crate futures-intrusive 0.1.1 into work/ex/pr-63247/sources/try#757dacae0a9f1b46b3ab58a1f1232332e8fc7dab/reg/futures-intrusive/0.1.1
[INFO] validating manifest of futures-intrusive-0.1.1 on toolchain master#452087b4bf18cece2d52d7cd8c9147195e5404bf
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+452087b4bf18cece2d52d7cd8c9147195e5404bf-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of futures-intrusive-0.1.1 on toolchain try#757dacae0a9f1b46b3ab58a1f1232332e8fc7dab
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+757dacae0a9f1b46b3ab58a1f1232332e8fc7dab-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing futures-intrusive-0.1.1
[INFO] finished frobbing futures-intrusive-0.1.1
[INFO] frobbed toml for futures-intrusive-0.1.1 written to work/ex/pr-63247/sources/master#452087b4bf18cece2d52d7cd8c9147195e5404bf/reg/futures-intrusive/0.1.1/Cargo.toml
[INFO] started frobbing futures-intrusive-0.1.1
[INFO] finished frobbing futures-intrusive-0.1.1
[INFO] frobbed toml for futures-intrusive-0.1.1 written to work/ex/pr-63247/sources/try#757dacae0a9f1b46b3ab58a1f1232332e8fc7dab/reg/futures-intrusive/0.1.1/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+452087b4bf18cece2d52d7cd8c9147195e5404bf-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+757dacae0a9f1b46b3ab58a1f1232332e8fc7dab-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+452087b4bf18cece2d52d7cd8c9147195e5404bf-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+757dacae0a9f1b46b3ab58a1f1232332e8fc7dab-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking futures-intrusive-0.1.1 against try#757dacae0a9f1b46b3ab58a1f1232332e8fc7dab for pr-63247
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-63247/worker-2/try#757dacae0a9f1b46b3ab58a1f1232332e8fc7dab:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-63247/sources/try#757dacae0a9f1b46b3ab58a1f1232332e8fc7dab/reg/futures-intrusive/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=forbid" "-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" "+757dacae0a9f1b46b3ab58a1f1232332e8fc7dab-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] c52f83e0e0ccf6f95baf5e37d07bd7f4c78a7016fe12017abb1e9c9f74c11127
[INFO] running `"docker" "start" "-a" "c52f83e0e0ccf6f95baf5e37d07bd7f4c78a7016fe12017abb1e9c9f74c11127"`
[INFO] [stderr]     Checking futures-core-preview v0.3.0-alpha.18
[INFO] [stderr]    Compiling proc-macro-nested v0.1.3
[INFO] [stderr]    Compiling futures-join-macro-preview v0.3.0-alpha.18
[INFO] [stderr]    Compiling futures-select-macro-preview v0.3.0-alpha.18
[INFO] [stderr]     Checking futures-sink-preview v0.3.0-alpha.18
[INFO] [stderr]     Checking futures-intrusive v0.1.1 (/opt/crater/workdir)
[INFO] [stderr]     Checking futures-channel-preview v0.3.0-alpha.18
[INFO] [stderr]     Checking futures-util-preview v0.3.0-alpha.18
[INFO] [stderr]     Checking futures-executor-preview v0.3.0-alpha.18
[INFO] [stderr]     Checking futures-preview v0.3.0-alpha.18
[INFO] [stderr]     Checking futures-test-preview v0.3.0-alpha.18
[INFO] [stderr] error[E0658]: async closures are unstable
[INFO] [stderr]    --> tests/mpmc_channel.rs:730:22
[INFO] [stderr]     |
[INFO] [stderr] 730 |         let stream = async move || {
[INFO] [stderr]     |                      ^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: for more information, see https://github.com/rust-lang/rust/issues/62290
[INFO] [stderr]     = help: add `#![feature(async_closure)]` to the crate attributes to enable
[INFO] [stderr] 
[INFO] [stderr] error[E0658]: async closures are unstable
[INFO] [stderr]    --> tests/mpmc_channel.rs:736:21
[INFO] [stderr]     |
[INFO] [stderr] 736 |         let drain = async move || {
[INFO] [stderr]     |                     ^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: for more information, see https://github.com/rust-lang/rust/issues/62290
[INFO] [stderr]     = help: add `#![feature(async_closure)]` to the crate attributes to enable
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 2 previous errors
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0658`.
[INFO] [stderr] error: Could not compile `futures-intrusive`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "c52f83e0e0ccf6f95baf5e37d07bd7f4c78a7016fe12017abb1e9c9f74c11127"`
[INFO] running `"docker" "rm" "-f" "c52f83e0e0ccf6f95baf5e37d07bd7f4c78a7016fe12017abb1e9c9f74c11127"`
[INFO] [stdout] c52f83e0e0ccf6f95baf5e37d07bd7f4c78a7016fe12017abb1e9c9f74c11127