[INFO] fetching crate futures-util 0.3.8...
[INFO] checking futures-util-0.3.8 against master#b7ebc6b0c1ba3c27ebb17c0b496ece778ef11e18 for pr-79470
[INFO] extracting crate futures-util 0.3.8 into /workspace/builds/worker-12/source
[INFO] validating manifest of crates.io crate futures-util 0.3.8 on toolchain b7ebc6b0c1ba3c27ebb17c0b496ece778ef11e18
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b7ebc6b0c1ba3c27ebb17c0b496ece778ef11e18" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate futures-util 0.3.8
[INFO] finished tweaking crates.io crate futures-util 0.3.8
[INFO] tweaked toml for crates.io crate futures-util 0.3.8 written to /workspace/builds/worker-12/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b7ebc6b0c1ba3c27ebb17c0b496ece778ef11e18" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b7ebc6b0c1ba3c27ebb17c0b496ece778ef11e18" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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" "rustops/crates-build-env@sha256:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+b7ebc6b0c1ba3c27ebb17c0b496ece778ef11e18" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f034ab874a496448d3e2aa1a3cca22a97a56992fa429de3d10187249015645f9
[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" "f034ab874a496448d3e2aa1a3cca22a97a56992fa429de3d10187249015645f9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f034ab874a496448d3e2aa1a3cca22a97a56992fa429de3d10187249015645f9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f034ab874a496448d3e2aa1a3cca22a97a56992fa429de3d10187249015645f9", kill_on_drop: false }`
[INFO] [stdout] f034ab874a496448d3e2aa1a3cca22a97a56992fa429de3d10187249015645f9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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=forbid" "-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" "rustops/crates-build-env@sha256:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+b7ebc6b0c1ba3c27ebb17c0b496ece778ef11e18" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f81a89973ba355c482f03e3aa769efba874a580fa023c7876ee75b8419970795
[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" "f81a89973ba355c482f03e3aa769efba874a580fa023c7876ee75b8419970795", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling proc-macro2 v1.0.24
[INFO] [stderr]    Compiling unicode-xid v0.2.1
[INFO] [stderr]    Compiling proc-macro-hack v0.5.19
[INFO] [stderr]    Compiling proc-macro-nested v0.1.6
[INFO] [stderr]     Checking once_cell v1.5.2
[INFO] [stderr]     Checking pin-utils v0.1.0
[INFO] [stderr]     Checking slab v0.4.2
[INFO] [stderr]     Checking futures-task v0.3.8
[INFO] [stderr]    Compiling quote v1.0.7
[INFO] [stderr]    Compiling syn v1.0.54
[INFO] [stderr]    Compiling pin-project-internal v1.0.2
[INFO] [stderr]    Compiling futures-macro v0.3.8
[INFO] [stderr]     Checking pin-project v1.0.2
[INFO] [stderr]     Checking futures-util v0.3.8 (/opt/rustwide/workdir)
[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::{StreamExt, FuturesUnordered};
[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 this struct
[INFO] [stdout]    |
[INFO] [stdout] 4  | use futures_util::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 crate::thread::thread::env::sys::ext::net::sys_common::backtrace::backtrace_rs::symbolize::gimli::mystd::task::Poll;
[INFO] [stdout]    |
[INFO] [stdout] 4  | use futures_core::__private::Poll;
[INFO] [stdout]    |
[INFO] [stdout] 4  | use futures_task::Poll;
[INFO] [stdout]    |
[INFO] [stdout]      and 3 other candidates
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 10 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0425, E0432, E0433.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0425`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `futures-util`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "f81a89973ba355c482f03e3aa769efba874a580fa023c7876ee75b8419970795", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f81a89973ba355c482f03e3aa769efba874a580fa023c7876ee75b8419970795", kill_on_drop: false }`
[INFO] [stdout] f81a89973ba355c482f03e3aa769efba874a580fa023c7876ee75b8419970795