[INFO] fetching crate futures-util 0.3.17...
[INFO] checking futures-util-0.3.17 against beta-2021-10-15 for beta-1.56-3
[INFO] extracting crate futures-util 0.3.17 into /workspace/builds/worker-0/source
[INFO] validating manifest of crates.io crate futures-util 0.3.17 on toolchain beta-2021-10-15
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-10-15" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate futures-util 0.3.17
[INFO] finished tweaking crates.io crate futures-util 0.3.17
[INFO] tweaked toml for crates.io crate futures-util 0.3.17 written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-10-15" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-10-15" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-10-15" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 394fbef5060639ab4925653acad7f6c96968b856e00205535e09d48a28c4d4ed
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "394fbef5060639ab4925653acad7f6c96968b856e00205535e09d48a28c4d4ed", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "394fbef5060639ab4925653acad7f6c96968b856e00205535e09d48a28c4d4ed", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "394fbef5060639ab4925653acad7f6c96968b856e00205535e09d48a28c4d4ed", kill_on_drop: false }`
[INFO] [stdout] 394fbef5060639ab4925653acad7f6c96968b856e00205535e09d48a28c4d4ed
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-10-15" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 277c41b5456495a5707f88e43559f6028d4a8e9a4acfc0ad951848bab288d16a
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "277c41b5456495a5707f88e43559f6028d4a8e9a4acfc0ad951848bab288d16a", kill_on_drop: false }`
[INFO] [stderr]    Compiling futures-util v0.3.17 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking tokio-io v0.1.13
[INFO] [stderr]     Checking mio-uds v0.6.8
[INFO] [stderr]     Checking tokio-reactor v0.1.12
[INFO] [stderr]     Checking tokio-codec v0.1.2
[INFO] [stderr]     Checking tokio-fs v0.1.7
[INFO] [stderr]     Checking tokio-tcp v0.1.4
[INFO] [stderr]     Checking tokio-uds v0.2.7
[INFO] [stderr]     Checking tokio-udp v0.1.6
[INFO] [stderr]     Checking tokio v0.1.22
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared crate or module `futures`
[INFO] [stdout]  --> benches/futures_unordered.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use futures::channel::oneshot;
[INFO] [stdout]   |     ^^^^^^^ use of undeclared crate or module `futures`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared crate or module `futures`
[INFO] [stdout]  --> benches/futures_unordered.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use futures::executor::block_on;
[INFO] [stdout]   |     ^^^^^^^ use of undeclared crate or module `futures`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared crate or module `futures`
[INFO] [stdout]  --> benches/futures_unordered.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 | use futures::stream::{FuturesUnordered, StreamExt};
[INFO] [stdout]   |     ^^^^^^^ use of undeclared crate or module `futures`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared crate or module `futures`
[INFO] [stdout]   --> benches/futures_unordered.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 | use futures::task::Poll;
[INFO] [stdout]    |     ^^^^^^^ use of undeclared crate or module `futures`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0432]: unresolved import `futures`
[INFO] [stdout]  --> benches/futures_unordered.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | use futures::future;
[INFO] [stdout]   |     ^^^^^^^ use of undeclared crate or module `futures`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared crate or module `oneshot`
[INFO] [stdout]   --> benches/futures_unordered.rs:23:28
[INFO] [stdout]    |
[INFO] [stdout] 23 |             let (tx, rx) = oneshot::channel();
[INFO] [stdout]    |                            ^^^^^^^ use of undeclared crate or module `oneshot`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `Poll`
[INFO] [stdout]   --> benches/futures_unordered.rs:36:24
[INFO] [stdout]    |
[INFO] [stdout] 36 |                 if let Poll::Ready(None) = rxs.poll_next_unpin(cx) {
[INFO] [stdout]    |                        ^^^^ use of undeclared type `Poll`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `FuturesUnordered`
[INFO] [stdout]   --> benches/futures_unordered.rs:20:23
[INFO] [stdout]    |
[INFO] [stdout] 20 |         let mut rxs = FuturesUnordered::new();
[INFO] [stdout]    |                       ^^^^^^^^^^^^^^^^ not found in this scope
[INFO] [stdout]    |
[INFO] [stdout] help: consider importing one of these items
[INFO] [stdout]    |
[INFO] [stdout] 4  | use futures_util::stream::FuturesUnordered;
[INFO] [stdout]    |
[INFO] [stdout] 4  | use tokio::prelude::stream::FuturesUnordered;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find function `block_on` in this scope
[INFO] [stdout]   --> benches/futures_unordered.rs:34:9
[INFO] [stdout]    |
[INFO] [stdout] 34 |         block_on(future::poll_fn(move |cx| {
[INFO] [stdout]    |         ^^^^^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `Poll`
[INFO] [stdout]   --> benches/futures_unordered.rs:40:13
[INFO] [stdout]    |
[INFO] [stdout] 40 |             Poll::Ready(())
[INFO] [stdout]    |             ^^^^ not found in this scope
[INFO] [stdout]    |
[INFO] [stdout] help: consider importing one of these items
[INFO] [stdout]    |
[INFO] [stdout] 4  | use core::task::Poll;
[INFO] [stdout]    |
[INFO] [stdout] 4  | use futures_core::task::Poll;
[INFO] [stdout]    |
[INFO] [stdout] 4  | use futures_task::Poll;
[INFO] [stdout]    |
[INFO] [stdout] 4  | use futures_util::task::Poll;
[INFO] [stdout]    |
[INFO] [stdout]      and 3 other candidates
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> benches/futures_unordered.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(test)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 11 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0425, E0432, E0433, E0554.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0425`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `futures-util` due to 12 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "277c41b5456495a5707f88e43559f6028d4a8e9a4acfc0ad951848bab288d16a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "277c41b5456495a5707f88e43559f6028d4a8e9a4acfc0ad951848bab288d16a", kill_on_drop: false }`
[INFO] [stdout] 277c41b5456495a5707f88e43559f6028d4a8e9a4acfc0ad951848bab288d16a
