[INFO] fetching crate fb_futures_ext 0.1.2...
[INFO] checking fb_futures_ext-0.1.2 against master#b3bd7058c139e71bae0862ef8f8ac936208873e9 for pr-123752
[INFO] extracting crate fb_futures_ext 0.1.2 into /workspace/builds/worker-5-tc1/source
[INFO] validating manifest of crates.io crate fb_futures_ext 0.1.2 on toolchain b3bd7058c139e71bae0862ef8f8ac936208873e9
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b3bd7058c139e71bae0862ef8f8ac936208873e9" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate fb_futures_ext 0.1.2
[INFO] finished tweaking crates.io crate fb_futures_ext 0.1.2
[INFO] tweaked toml for crates.io crate fb_futures_ext 0.1.2 written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b3bd7058c139e71bae0862ef8f8ac936208873e9" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 102 packages
[INFO] [stderr]       Adding ansi_term v0.11.0 (latest: v0.12.1)
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[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b3bd7058c139e71bae0862ef8f8ac936208873e9" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded fb_cloned v0.1.3
[INFO] [stderr]   Downloaded lock_ext v0.1.3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+b3bd7058c139e71bae0862ef8f8ac936208873e9" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e352baf52464dec88ec2705d725bab36c840fdae6307f9526209a720929fbd7d
[INFO] running `Command { std: "docker" "start" "-a" "e352baf52464dec88ec2705d725bab36c840fdae6307f9526209a720929fbd7d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e352baf52464dec88ec2705d725bab36c840fdae6307f9526209a720929fbd7d", kill_on_drop: false }`
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[INFO] [stdout] e352baf52464dec88ec2705d725bab36c840fdae6307f9526209a720929fbd7d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/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" "RUSTDOCFLAGS=--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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+b3bd7058c139e71bae0862ef8f8ac936208873e9" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c64f6aad935358f82223067981eca2bc96929ff2d09c50ea0639ee6da73e00a1
[INFO] running `Command { std: "docker" "start" "-a" "c64f6aad935358f82223067981eca2bc96929ff2d09c50ea0639ee6da73e00a1", kill_on_drop: false }`
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]    Compiling crossbeam-utils v0.7.2
[INFO] [stderr]    Compiling maybe-uninit v2.0.0
[INFO] [stderr]     Checking futures v0.1.31
[INFO] [stderr]    Compiling memoffset v0.5.6
[INFO] [stderr]    Compiling crossbeam-epoch v0.8.2
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[INFO] [stderr]    Compiling parking_lot v0.9.0
[INFO] [stderr]     Checking parking_lot_core v0.9.9
[INFO] [stderr]     Checking env_logger v0.7.1
[INFO] [stderr]     Checking difference v2.0.0
[INFO] [stderr]     Checking net2 v0.2.39
[INFO] [stderr]     Checking fb_cloned v0.1.3
[INFO] [stderr]     Checking pretty_assertions v0.6.1
[INFO] [stderr]     Checking assert_matches v1.5.0
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[INFO] [stderr]     Checking tokio-io v0.1.13
[INFO] [stderr]     Checking tokio-reactor v0.1.12
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[INFO] [stderr]     Checking tokio v0.1.22
[INFO] [stderr]     Checking fb_futures_ext v0.1.2 (/opt/rustwide/workdir)
[INFO] [stdout] error: the item `Stream` is imported redundantly
[INFO] [stdout]   --> src/stream_clone.rs:13:20
[INFO] [stdout]    |
[INFO] [stdout] 12 |     prelude::*,
[INFO] [stdout]    |     ---------- the item `Stream` is already imported here
[INFO] [stdout] 13 |     stream::{Fuse, Stream},
[INFO] [stdout]    |                    ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] note: the lint level is defined here
[INFO] [stdout]   --> src/lib.rs:10:9
[INFO] [stdout]    |
[INFO] [stdout] 10 | #![deny(warnings, missing_docs, clippy::all, broken_intra_doc_links)]
[INFO] [stdout]    |         ^^^^^^^^
[INFO] [stdout]    = note: `#[deny(unused_imports)]` implied by `#[deny(warnings)]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: the item `AsyncSink` is imported redundantly
[INFO] [stdout]   --> src/stream_clone.rs:15:5
[INFO] [stdout]    |
[INFO] [stdout] 12 |     prelude::*,
[INFO] [stdout]    |     ---------- the item `AsyncSink` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 15 |     AsyncSink,
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: the item `Default` is imported redundantly
[INFO] [stdout]   --> src/stream_wrappers/collect_to.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 11 | use std::default::Default;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   --> /rustc/b3bd7058c139e71bae0862ef8f8ac936208873e9/library/std/src/prelude/mod.rs:134:13
[INFO] [stdout]    |
[INFO] [stdout]    = note: the item `Default` is already defined here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: the item `Bytes` is imported redundantly
[INFO] [stdout]    --> src/decode.rs:124:9
[INFO] [stdout]     |
[INFO] [stdout] 124 |     use bytes_old::Bytes;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 127 |     use super::*;
[INFO] [stdout]     |         -------- the item `Bytes` is already imported here
[INFO] [stdout]     |
[INFO] [stdout] note: the lint level is defined here
[INFO] [stdout]    --> src/lib.rs:10:9
[INFO] [stdout]     |
[INFO] [stdout] 10  | #![deny(warnings, missing_docs, clippy::all, broken_intra_doc_links)]
[INFO] [stdout]     |         ^^^^^^^^
[INFO] [stdout]     = note: `#[deny(unused_imports)]` implied by `#[deny(warnings)]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: the item `Stream` is imported redundantly
[INFO] [stdout]    --> src/decode.rs:125:27
[INFO] [stdout]     |
[INFO] [stdout] 125 |     use futures::{stream, Stream};
[INFO] [stdout]     |                           ^^^^^^
[INFO] [stdout] 126 |
[INFO] [stdout] 127 |     use super::*;
[INFO] [stdout]     |         -------- the item `Stream` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: the item `Iterator` is imported redundantly
[INFO] [stdout]    --> src/encode.rs:106:9
[INFO] [stdout]     |
[INFO] [stdout] 106 |     use std::iter::Iterator;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    --> /rustc/b3bd7058c139e71bae0862ef8f8ac936208873e9/library/std/src/prelude/mod.rs:134:13
[INFO] [stdout]     |
[INFO] [stdout]     = note: the item `Iterator` is already defined here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: the item `Future` is imported redundantly
[INFO] [stdout]    --> src/futures_ordered.rs:111:19
[INFO] [stdout]     |
[INFO] [stdout] 111 |     use futures::{Future, Sink, Stream};
[INFO] [stdout]     |                   ^^^^^^
[INFO] [stdout] 112 |
[INFO] [stdout] 113 |     use super::*;
[INFO] [stdout]     |         -------- the item `Future` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: the item `Stream` is imported redundantly
[INFO] [stdout]    --> src/futures_ordered.rs:111:33
[INFO] [stdout]     |
[INFO] [stdout] 111 |     use futures::{Future, Sink, Stream};
[INFO] [stdout]     |                                 ^^^^^^
[INFO] [stdout] 112 |
[INFO] [stdout] 113 |     use super::*;
[INFO] [stdout]     |         -------- the item `Stream` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: the item `Stream` is imported redundantly
[INFO] [stdout]   --> src/stream_clone.rs:13:20
[INFO] [stdout]    |
[INFO] [stdout] 12 |     prelude::*,
[INFO] [stdout]    |     ---------- the item `Stream` is already imported here
[INFO] [stdout] 13 |     stream::{Fuse, Stream},
[INFO] [stdout]    |                    ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: the item `AsyncSink` is imported redundantly
[INFO] [stdout]   --> src/stream_clone.rs:15:5
[INFO] [stdout]    |
[INFO] [stdout] 12 |     prelude::*,
[INFO] [stdout]    |     ---------- the item `AsyncSink` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 15 |     AsyncSink,
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: the item `future` is imported redundantly
[INFO] [stdout]    --> src/stream_clone.rs:142:19
[INFO] [stdout]     |
[INFO] [stdout] 141 |     use super::*;
[INFO] [stdout]     |         -------- the item `future` is already imported here
[INFO] [stdout] 142 |     use futures::{future, stream};
[INFO] [stdout]     |                   ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: the item `Default` is imported redundantly
[INFO] [stdout]   --> src/stream_wrappers/collect_to.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 11 | use std::default::Default;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   --> /rustc/b3bd7058c139e71bae0862ef8f8ac936208873e9/library/std/src/prelude/mod.rs:134:13
[INFO] [stdout]    |
[INFO] [stdout]    = note: the item `Default` is already defined here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: the item `Sink` is imported redundantly
[INFO] [stdout]    --> src/streamfork.rs:210:19
[INFO] [stdout]     |
[INFO] [stdout] 208 |     use super::*;
[INFO] [stdout]     |         -------- the item `Sink` is already imported here
[INFO] [stdout] 209 |     use futures::stream::{iter_ok, once};
[INFO] [stdout] 210 |     use futures::{sink::Sink, Async, AsyncSink, Future, StartSend};
[INFO] [stdout]     |                   ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: the item `Async` is imported redundantly
[INFO] [stdout]    --> src/streamfork.rs:210:31
[INFO] [stdout]     |
[INFO] [stdout] 208 |     use super::*;
[INFO] [stdout]     |         -------- the item `Async` is already imported here
[INFO] [stdout] 209 |     use futures::stream::{iter_ok, once};
[INFO] [stdout] 210 |     use futures::{sink::Sink, Async, AsyncSink, Future, StartSend};
[INFO] [stdout]     |                               ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: the item `AsyncSink` is imported redundantly
[INFO] [stdout]    --> src/streamfork.rs:210:38
[INFO] [stdout]     |
[INFO] [stdout] 208 |     use super::*;
[INFO] [stdout]     |         -------- the item `AsyncSink` is already imported here
[INFO] [stdout] 209 |     use futures::stream::{iter_ok, once};
[INFO] [stdout] 210 |     use futures::{sink::Sink, Async, AsyncSink, Future, StartSend};
[INFO] [stdout]     |                                      ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: the item `Future` is imported redundantly
[INFO] [stdout]    --> src/streamfork.rs:210:49
[INFO] [stdout]     |
[INFO] [stdout] 208 |     use super::*;
[INFO] [stdout]     |         -------- the item `Future` is already imported here
[INFO] [stdout] 209 |     use futures::stream::{iter_ok, once};
[INFO] [stdout] 210 |     use futures::{sink::Sink, Async, AsyncSink, Future, StartSend};
[INFO] [stdout]     |                                                 ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: the item `Duration` is imported redundantly
[INFO] [stdout]     --> src/lib.rs:1031:27
[INFO] [stdout]      |
[INFO] [stdout] 1029 |     use super::*;
[INFO] [stdout]      |         -------- the item `Duration` is already imported here
[INFO] [stdout] 1030 |
[INFO] [stdout] 1031 |     use std::time::{self, Duration};
[INFO] [stdout]      |                           ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: the item `stream` is imported redundantly
[INFO] [stdout]     --> src/lib.rs:1035:9
[INFO] [stdout]      |
[INFO] [stdout] 1029 |     use super::*;
[INFO] [stdout]      |         -------- the item `stream` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 1035 |     use futures::stream;
[INFO] [stdout]      |         ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: the item `mpsc` is imported redundantly
[INFO] [stdout]     --> src/lib.rs:1036:9
[INFO] [stdout]      |
[INFO] [stdout] 1029 |     use super::*;
[INFO] [stdout]      |         -------- the item `mpsc` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 1036 |     use futures::sync::mpsc;
[INFO] [stdout]      |         ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: the item `Stream` is imported redundantly
[INFO] [stdout]     --> src/lib.rs:1037:9
[INFO] [stdout]      |
[INFO] [stdout] 1029 |     use super::*;
[INFO] [stdout]      |         -------- the item `Stream` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 1037 |     use futures::Stream;
[INFO] [stdout]      |         ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: the item `Iterator` is imported redundantly
[INFO] [stdout]     --> src/lib.rs:1377:9
[INFO] [stdout]      |
[INFO] [stdout] 1377 |     use std::iter::Iterator;
[INFO] [stdout]      |         ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     --> /rustc/b3bd7058c139e71bae0862ef8f8ac936208873e9/library/std/src/prelude/mod.rs:134:13
[INFO] [stdout]      |
[INFO] [stdout]      = note: the item `Iterator` is already defined here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: variable does not need to be mutable
[INFO] [stdout]    --> src/bounded_traversal/dag.rs:239:17
[INFO] [stdout]     |
[INFO] [stdout] 239 |             let mut children = children
[INFO] [stdout]     |                 ----^^^^^^^^
[INFO] [stdout]     |                 |
[INFO] [stdout]     |                 help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[deny(unused_mut)]` implied by `#[deny(warnings)]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 4 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `fb_futures_ext` (lib) due to 5 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error: variable does not need to be mutable
[INFO] [stdout]    --> src/bounded_traversal/dag.rs:239:17
[INFO] [stdout]     |
[INFO] [stdout] 239 |             let mut children = children
[INFO] [stdout]     |                 ----^^^^^^^^
[INFO] [stdout]     |                 |
[INFO] [stdout]     |                 help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[deny(unused_mut)]` implied by `#[deny(warnings)]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 19 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `fb_futures_ext` (lib test) due to 20 previous errors
[INFO] running `Command { std: "docker" "inspect" "c64f6aad935358f82223067981eca2bc96929ff2d09c50ea0639ee6da73e00a1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c64f6aad935358f82223067981eca2bc96929ff2d09c50ea0639ee6da73e00a1", kill_on_drop: false }`
[INFO] [stdout] c64f6aad935358f82223067981eca2bc96929ff2d09c50ea0639ee6da73e00a1
[INFO] checking fb_futures_ext-0.1.2 against try#57fe1b734d9ff1c8a92bda60b85506b9648158d3 for pr-123752
[INFO] extracting crate fb_futures_ext 0.1.2 into /workspace/builds/worker-5-tc2/source
[INFO] validating manifest of crates.io crate fb_futures_ext 0.1.2 on toolchain 57fe1b734d9ff1c8a92bda60b85506b9648158d3
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+57fe1b734d9ff1c8a92bda60b85506b9648158d3" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate fb_futures_ext 0.1.2
[INFO] finished tweaking crates.io crate fb_futures_ext 0.1.2
[INFO] tweaked toml for crates.io crate fb_futures_ext 0.1.2 written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+57fe1b734d9ff1c8a92bda60b85506b9648158d3" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 102 packages
[INFO] [stderr]       Adding ansi_term v0.11.0 (latest: v0.12.1)
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[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+57fe1b734d9ff1c8a92bda60b85506b9648158d3" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+57fe1b734d9ff1c8a92bda60b85506b9648158d3" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ced2334fffc440820faf2e654ab6baa8edc191852e5016618141e90d35d6be7d
[INFO] running `Command { std: "docker" "start" "-a" "ced2334fffc440820faf2e654ab6baa8edc191852e5016618141e90d35d6be7d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ced2334fffc440820faf2e654ab6baa8edc191852e5016618141e90d35d6be7d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ced2334fffc440820faf2e654ab6baa8edc191852e5016618141e90d35d6be7d", kill_on_drop: false }`
[INFO] [stdout] ced2334fffc440820faf2e654ab6baa8edc191852e5016618141e90d35d6be7d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/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" "RUSTDOCFLAGS=--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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+57fe1b734d9ff1c8a92bda60b85506b9648158d3" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a615f9e1f0eb286589f14a2018914ce18cca202ea8af0dbf911f3a09d963e132
[INFO] running `Command { std: "docker" "start" "-a" "a615f9e1f0eb286589f14a2018914ce18cca202ea8af0dbf911f3a09d963e132", kill_on_drop: false }`
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]    Compiling crossbeam-utils v0.7.2
[INFO] [stderr]    Compiling maybe-uninit v2.0.0
[INFO] [stderr]     Checking futures v0.1.31
[INFO] [stderr]    Compiling memoffset v0.5.6
[INFO] [stderr]     Checking lock_api v0.3.4
[INFO] [stderr]    Compiling crossbeam-epoch v0.8.2
[INFO] [stderr]    Compiling getrandom v0.1.16
[INFO] [stderr]    Compiling serde v1.0.197
[INFO] [stderr]     Checking iovec v0.1.4
[INFO] [stderr]    Compiling parking_lot_core v0.6.3
[INFO] [stderr]    Compiling parking_lot v0.9.0
[INFO] [stderr]     Checking num_cpus v1.16.0
[INFO] [stderr]     Checking parking_lot_core v0.9.9
[INFO] [stderr]     Checking env_logger v0.7.1
[INFO] [stderr]     Checking difference v2.0.0
[INFO] [stderr]     Checking net2 v0.2.39
[INFO] [stderr]     Checking pretty_assertions v0.6.1
[INFO] [stderr]     Checking assert_matches v1.5.0
[INFO] [stderr]     Checking fb_cloned v0.1.3
[INFO] [stderr]     Checking mio v0.6.23
[INFO] [stderr]     Checking parking_lot v0.12.1
[INFO] [stderr]     Checking smallvec v0.6.14
[INFO] [stderr]     Checking lock_ext v0.1.3
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]     Checking mio-uds v0.6.8
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]     Checking crossbeam-queue v0.2.3
[INFO] [stderr]     Checking tokio-executor v0.1.10
[INFO] [stderr]     Checking tokio-sync v0.1.8
[INFO] [stderr]     Checking crossbeam-deque v0.7.4
[INFO] [stderr]     Checking tokio-current-thread v0.1.7
[INFO] [stderr]     Checking tokio-timer v0.2.13
[INFO] [stderr]     Checking tokio-threadpool v0.1.18
[INFO] [stderr]     Checking quickcheck v0.9.2
[INFO] [stderr]     Checking bytes v0.4.12
[INFO] [stderr]     Checking tokio-io v0.1.13
[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-uds v0.2.7
[INFO] [stderr]     Checking tokio-udp v0.1.6
[INFO] [stderr]     Checking tokio-tcp v0.1.4
[INFO] [stderr]     Checking tokio v0.1.22
[INFO] [stderr]     Checking fb_futures_ext v0.1.2 (/opt/rustwide/workdir)
[INFO] [stdout] error: the item `Stream` is imported redundantly
[INFO] [stdout]   --> src/stream_clone.rs:13:20
[INFO] [stdout]    |
[INFO] [stdout] 12 |     prelude::*,
[INFO] [stdout]    |     ---------- the item `Stream` is already imported here
[INFO] [stdout] 13 |     stream::{Fuse, Stream},
[INFO] [stdout]    |                    ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] note: the lint level is defined here
[INFO] [stdout]   --> src/lib.rs:10:9
[INFO] [stdout]    |
[INFO] [stdout] 10 | #![deny(warnings, missing_docs, clippy::all, broken_intra_doc_links)]
[INFO] [stdout]    |         ^^^^^^^^
[INFO] [stdout]    = note: `#[deny(unused_imports)]` implied by `#[deny(warnings)]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: the item `AsyncSink` is imported redundantly
[INFO] [stdout]   --> src/stream_clone.rs:15:5
[INFO] [stdout]    |
[INFO] [stdout] 12 |     prelude::*,
[INFO] [stdout]    |     ---------- the item `AsyncSink` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 15 |     AsyncSink,
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: the item `Default` is imported redundantly
[INFO] [stdout]   --> src/stream_wrappers/collect_to.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 11 | use std::default::Default;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   --> /rustc/57fe1b734d9ff1c8a92bda60b85506b9648158d3/library/std/src/prelude/mod.rs:134:13
[INFO] [stdout]    |
[INFO] [stdout]    = note: the item `Default` is already defined here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: the item `Bytes` is imported redundantly
[INFO] [stdout]    --> src/decode.rs:124:9
[INFO] [stdout]     |
[INFO] [stdout] 124 |     use bytes_old::Bytes;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 127 |     use super::*;
[INFO] [stdout]     |         -------- the item `Bytes` is already imported here
[INFO] [stdout]     |
[INFO] [stdout] note: the lint level is defined here
[INFO] [stdout]    --> src/lib.rs:10:9
[INFO] [stdout]     |
[INFO] [stdout] 10  | #![deny(warnings, missing_docs, clippy::all, broken_intra_doc_links)]
[INFO] [stdout]     |         ^^^^^^^^
[INFO] [stdout]     = note: `#[deny(unused_imports)]` implied by `#[deny(warnings)]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: the item `Stream` is imported redundantly
[INFO] [stdout]    --> src/decode.rs:125:27
[INFO] [stdout]     |
[INFO] [stdout] 125 |     use futures::{stream, Stream};
[INFO] [stdout]     |                           ^^^^^^
[INFO] [stdout] 126 |
[INFO] [stdout] 127 |     use super::*;
[INFO] [stdout]     |         -------- the item `Stream` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: the item `Iterator` is imported redundantly
[INFO] [stdout]    --> src/encode.rs:106:9
[INFO] [stdout]     |
[INFO] [stdout] 106 |     use std::iter::Iterator;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    --> /rustc/57fe1b734d9ff1c8a92bda60b85506b9648158d3/library/std/src/prelude/mod.rs:134:13
[INFO] [stdout]     |
[INFO] [stdout]     = note: the item `Iterator` is already defined here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: the item `Future` is imported redundantly
[INFO] [stdout]    --> src/futures_ordered.rs:111:19
[INFO] [stdout]     |
[INFO] [stdout] 111 |     use futures::{Future, Sink, Stream};
[INFO] [stdout]     |                   ^^^^^^
[INFO] [stdout] 112 |
[INFO] [stdout] 113 |     use super::*;
[INFO] [stdout]     |         -------- the item `Future` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: the item `Stream` is imported redundantly
[INFO] [stdout]    --> src/futures_ordered.rs:111:33
[INFO] [stdout]     |
[INFO] [stdout] 111 |     use futures::{Future, Sink, Stream};
[INFO] [stdout]     |                                 ^^^^^^
[INFO] [stdout] 112 |
[INFO] [stdout] 113 |     use super::*;
[INFO] [stdout]     |         -------- the item `Stream` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: the item `Stream` is imported redundantly
[INFO] [stdout]   --> src/stream_clone.rs:13:20
[INFO] [stdout]    |
[INFO] [stdout] 12 |     prelude::*,
[INFO] [stdout]    |     ---------- the item `Stream` is already imported here
[INFO] [stdout] 13 |     stream::{Fuse, Stream},
[INFO] [stdout]    |                    ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: the item `AsyncSink` is imported redundantly
[INFO] [stdout]   --> src/stream_clone.rs:15:5
[INFO] [stdout]    |
[INFO] [stdout] 12 |     prelude::*,
[INFO] [stdout]    |     ---------- the item `AsyncSink` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 15 |     AsyncSink,
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: the item `future` is imported redundantly
[INFO] [stdout]    --> src/stream_clone.rs:142:19
[INFO] [stdout]     |
[INFO] [stdout] 141 |     use super::*;
[INFO] [stdout]     |         -------- the item `future` is already imported here
[INFO] [stdout] 142 |     use futures::{future, stream};
[INFO] [stdout]     |                   ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: the item `Default` is imported redundantly
[INFO] [stdout]   --> src/stream_wrappers/collect_to.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 11 | use std::default::Default;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   --> /rustc/57fe1b734d9ff1c8a92bda60b85506b9648158d3/library/std/src/prelude/mod.rs:134:13
[INFO] [stdout]    |
[INFO] [stdout]    = note: the item `Default` is already defined here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: the item `Sink` is imported redundantly
[INFO] [stdout]    --> src/streamfork.rs:210:19
[INFO] [stdout]     |
[INFO] [stdout] 208 |     use super::*;
[INFO] [stdout]     |         -------- the item `Sink` is already imported here
[INFO] [stdout] 209 |     use futures::stream::{iter_ok, once};
[INFO] [stdout] 210 |     use futures::{sink::Sink, Async, AsyncSink, Future, StartSend};
[INFO] [stdout]     |                   ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: the item `Async` is imported redundantly
[INFO] [stdout]    --> src/streamfork.rs:210:31
[INFO] [stdout]     |
[INFO] [stdout] 208 |     use super::*;
[INFO] [stdout]     |         -------- the item `Async` is already imported here
[INFO] [stdout] 209 |     use futures::stream::{iter_ok, once};
[INFO] [stdout] 210 |     use futures::{sink::Sink, Async, AsyncSink, Future, StartSend};
[INFO] [stdout]     |                               ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: the item `AsyncSink` is imported redundantly
[INFO] [stdout]    --> src/streamfork.rs:210:38
[INFO] [stdout]     |
[INFO] [stdout] 208 |     use super::*;
[INFO] [stdout]     |         -------- the item `AsyncSink` is already imported here
[INFO] [stdout] 209 |     use futures::stream::{iter_ok, once};
[INFO] [stdout] 210 |     use futures::{sink::Sink, Async, AsyncSink, Future, StartSend};
[INFO] [stdout]     |                                      ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: the item `Future` is imported redundantly
[INFO] [stdout]    --> src/streamfork.rs:210:49
[INFO] [stdout]     |
[INFO] [stdout] 208 |     use super::*;
[INFO] [stdout]     |         -------- the item `Future` is already imported here
[INFO] [stdout] 209 |     use futures::stream::{iter_ok, once};
[INFO] [stdout] 210 |     use futures::{sink::Sink, Async, AsyncSink, Future, StartSend};
[INFO] [stdout]     |                                                 ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: the item `Duration` is imported redundantly
[INFO] [stdout]     --> src/lib.rs:1031:27
[INFO] [stdout]      |
[INFO] [stdout] 1029 |     use super::*;
[INFO] [stdout]      |         -------- the item `Duration` is already imported here
[INFO] [stdout] 1030 |
[INFO] [stdout] 1031 |     use std::time::{self, Duration};
[INFO] [stdout]      |                           ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: the item `stream` is imported redundantly
[INFO] [stdout]     --> src/lib.rs:1035:9
[INFO] [stdout]      |
[INFO] [stdout] 1029 |     use super::*;
[INFO] [stdout]      |         -------- the item `stream` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 1035 |     use futures::stream;
[INFO] [stdout]      |         ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: the item `mpsc` is imported redundantly
[INFO] [stdout]     --> src/lib.rs:1036:9
[INFO] [stdout]      |
[INFO] [stdout] 1029 |     use super::*;
[INFO] [stdout]      |         -------- the item `mpsc` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 1036 |     use futures::sync::mpsc;
[INFO] [stdout]      |         ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: the item `Stream` is imported redundantly
[INFO] [stdout]     --> src/lib.rs:1037:9
[INFO] [stdout]      |
[INFO] [stdout] 1029 |     use super::*;
[INFO] [stdout]      |         -------- the item `Stream` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 1037 |     use futures::Stream;
[INFO] [stdout]      |         ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: the item `Iterator` is imported redundantly
[INFO] [stdout]     --> src/lib.rs:1377:9
[INFO] [stdout]      |
[INFO] [stdout] 1377 |     use std::iter::Iterator;
[INFO] [stdout]      |         ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     --> /rustc/57fe1b734d9ff1c8a92bda60b85506b9648158d3/library/std/src/prelude/mod.rs:134:13
[INFO] [stdout]      |
[INFO] [stdout]      = note: the item `Iterator` is already defined here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: variable does not need to be mutable
[INFO] [stdout]    --> src/bounded_traversal/dag.rs:239:17
[INFO] [stdout]     |
[INFO] [stdout] 239 |             let mut children = children
[INFO] [stdout]     |                 ----^^^^^^^^
[INFO] [stdout]     |                 |
[INFO] [stdout]     |                 help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[deny(unused_mut)]` implied by `#[deny(warnings)]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 4 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `fb_futures_ext` (lib) due to 5 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error: variable does not need to be mutable
[INFO] [stdout]    --> src/bounded_traversal/dag.rs:239:17
[INFO] [stdout]     |
[INFO] [stdout] 239 |             let mut children = children
[INFO] [stdout]     |                 ----^^^^^^^^
[INFO] [stdout]     |                 |
[INFO] [stdout]     |                 help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[deny(unused_mut)]` implied by `#[deny(warnings)]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 19 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `fb_futures_ext` (lib test) due to 20 previous errors
[INFO] running `Command { std: "docker" "inspect" "a615f9e1f0eb286589f14a2018914ce18cca202ea8af0dbf911f3a09d963e132", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a615f9e1f0eb286589f14a2018914ce18cca202ea8af0dbf911f3a09d963e132", kill_on_drop: false }`
[INFO] [stdout] a615f9e1f0eb286589f14a2018914ce18cca202ea8af0dbf911f3a09d963e132
