[INFO] fetching crate crucio 0.1.0...
[INFO] checking crucio-0.1.0 against try#ea663bba38739867a4b75ac820991b4f5d093c3b for pr-62262-1
[INFO] extracting crate crucio 0.1.0 into /workspace/builds/worker-13/source
[INFO] validating manifest of crates.io crate crucio 0.1.0 on toolchain ea663bba38739867a4b75ac820991b4f5d093c3b
[INFO] running `"/workspace/cargo-home/bin/cargo" "+ea663bba38739867a4b75ac820991b4f5d093c3b" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate crucio 0.1.0
[INFO] finished tweaking crates.io crate crucio 0.1.0
[INFO] tweaked toml for crates.io crate crucio 0.1.0 written to /workspace/builds/worker-13/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+ea663bba38739867a4b75ac820991b4f5d093c3b" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+ea663bba38739867a4b75ac820991b4f5d093c3b" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+ea663bba38739867a4b75ac820991b4f5d093c3b" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 49c9b095c6e696902ab94ad76834291e4e6d81208404f03364ef2175eb8fddf0
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `"docker" "start" "-a" "49c9b095c6e696902ab94ad76834291e4e6d81208404f03364ef2175eb8fddf0"`
[INFO] [stderr]     Checking futures-core-preview v0.3.0-alpha.18
[INFO] [stderr]     Checking futures-io-preview v0.3.0-alpha.18
[INFO] [stderr]    Compiling doc-comment v0.3.1
[INFO] [stderr]    Compiling structopt-derive v0.2.18
[INFO] [stderr]    Compiling snafu-derive v0.4.4
[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-channel-preview v0.3.0-alpha.18
[INFO] [stderr]     Checking futures-util-preview v0.3.0-alpha.18
[INFO] [stderr]     Checking structopt v0.2.18
[INFO] [stderr]     Checking snafu v0.4.4
[INFO] [stderr]     Checking futures-executor-preview v0.3.0-alpha.18
[INFO] [stderr]     Checking futures-preview v0.3.0-alpha.18
[INFO] [stderr]     Checking crucio v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] error[E0425]: cannot find function `empty` in module `future`
[INFO] [stderr]   --> src/modes/never.rs:25:22
[INFO] [stderr]    |
[INFO] [stderr] 25 |     let () = future::empty().await;
[INFO] [stderr]    |                      ^^^^^ not found in `future`
[INFO] [stderr] help: possible candidates are found in other modules, you can import them into scope
[INFO] [stderr]    |
[INFO] [stderr] 2  | use core::iter::empty;
[INFO] [stderr]    |
[INFO] [stderr] 2  | use futures::core_reexport::iter::empty;
[INFO] [stderr]    |
[INFO] [stderr] 2  | use futures::stream::empty;
[INFO] [stderr]    |
[INFO] [stderr] 2  | use std::io::empty;
[INFO] [stderr]    |
[INFO] [stderr] and 3 other candidates
[INFO] [stderr] 
[INFO] [stderr] error[E0425]: cannot find function `empty` in module `future`
[INFO] [stderr]   --> src/modes/never_body.rs:28:30
[INFO] [stderr]    |
[INFO] [stderr] 28 |             let () = future::empty().await;
[INFO] [stderr]    |                              ^^^^^ not found in `future`
[INFO] [stderr] help: possible candidates are found in other modules, you can import them into scope
[INFO] [stderr]    |
[INFO] [stderr] 2  | use core::iter::empty;
[INFO] [stderr]    |
[INFO] [stderr] 2  | use futures::core_reexport::iter::empty;
[INFO] [stderr]    |
[INFO] [stderr] 2  | use futures::stream::empty;
[INFO] [stderr]    |
[INFO] [stderr] 2  | use std::io::empty;
[INFO] [stderr]    |
[INFO] [stderr] and 3 other candidates
[INFO] [stderr] 
[INFO] [stderr] error[E0658]: async closures are unstable
[INFO] [stderr]   --> src/modes/never_body.rs:27:9
[INFO] [stderr]    |
[INFO] [stderr] 27 |         async move |()| -> Option<(Result<Vec<u8>, Error>, ())> {
[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]   --> src/modes/random.rs:30:9
[INFO] [stderr]    |
[INFO] [stderr] 30 |         async move |mut rng| -> Option<(Result<Vec<u8>, Error>, StdRng)> {
[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]   --> src/modes/random_text.rs:30:9
[INFO] [stderr]    |
[INFO] [stderr] 30 |         async move |mut rng| -> Option<(Result<String, Error>, StdRng)> {
[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]   --> src/modes/slow_body.rs:37:9
[INFO] [stderr]    |
[INFO] [stderr] 37 |         async move |mut data| -> Option<(Result<Vec<u8>, Error>, VecDeque<u8>)> {
[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[E0425]: cannot find function `empty` in module `future`
[INFO] [stderr]   --> src/modes/never.rs:25:22
[INFO] [stderr]    |
[INFO] [stderr] 25 |     let () = future::empty().await;
[INFO] [stderr]    |                      ^^^^^ not found in `future`
[INFO] [stderr] help: possible candidates are found in other modules, you can import them into scope
[INFO] [stderr]    |
[INFO] [stderr] 2  | use core::iter::empty;
[INFO] [stderr]    |
[INFO] [stderr] 2  | use futures::core_reexport::iter::empty;
[INFO] [stderr]    |
[INFO] [stderr] 2  | use futures::stream::empty;
[INFO] [stderr]    |
[INFO] [stderr] 2  | use std::io::empty;
[INFO] [stderr]    |
[INFO] [stderr] and 3 other candidates
[INFO] [stderr] 
[INFO] [stderr] error[E0425]: cannot find function `empty` in module `future`
[INFO] [stderr]   --> src/modes/never_body.rs:28:30
[INFO] [stderr]    |
[INFO] [stderr] 28 |             let () = future::empty().await;
[INFO] [stderr]    |                              ^^^^^ not found in `future`
[INFO] [stderr] help: possible candidates are found in other modules, you can import them into scope
[INFO] [stderr]    |
[INFO] [stderr] 2  | use core::iter::empty;
[INFO] [stderr]    |
[INFO] [stderr] 2  | use futures::core_reexport::iter::empty;
[INFO] [stderr]    |
[INFO] [stderr] 2  | use futures::stream::empty;
[INFO] [stderr]    |
[INFO] [stderr] 2  | use std::io::empty;
[INFO] [stderr]    |
[INFO] [stderr] and 3 other candidates
[INFO] [stderr] 
[INFO] [stderr] error[E0658]: async closures are unstable
[INFO] [stderr]   --> src/modes/never_body.rs:27:9
[INFO] [stderr]    |
[INFO] [stderr] 27 |         async move |()| -> Option<(Result<Vec<u8>, Error>, ())> {
[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]   --> src/modes/random.rs:30:9
[INFO] [stderr]    |
[INFO] [stderr] 30 |         async move |mut rng| -> Option<(Result<Vec<u8>, Error>, StdRng)> {
[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]   --> src/modes/random_text.rs:30:9
[INFO] [stderr]    |
[INFO] [stderr] 30 |         async move |mut rng| -> Option<(Result<String, Error>, StdRng)> {
[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]   --> src/modes/slow_body.rs:37:9
[INFO] [stderr]    |
[INFO] [stderr] 37 |         async move |mut data| -> Option<(Result<Vec<u8>, Error>, VecDeque<u8>)> {
[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 6 previous errors
[INFO] [stderr] 
[INFO] [stderr] Some errors have detailed explanations: E0425, E0658.
[INFO] [stderr] For more information about an error, try `rustc --explain E0425`.
[INFO] [stderr] error: aborting due to 6 previous errors
[INFO] [stderr] 
[INFO] [stderr] Some errors have detailed explanations: E0425, E0658.
[INFO] [stderr] For more information about an error, try `rustc --explain E0425`.
[INFO] [stderr] error: could not compile `crucio`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: could not compile `crucio`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "49c9b095c6e696902ab94ad76834291e4e6d81208404f03364ef2175eb8fddf0"`
[INFO] running `"docker" "rm" "-f" "49c9b095c6e696902ab94ad76834291e4e6d81208404f03364ef2175eb8fddf0"`
[INFO] [stdout] 49c9b095c6e696902ab94ad76834291e4e6d81208404f03364ef2175eb8fddf0