[INFO] fetching crate flume 0.10.11... [INFO] testing flume-0.10.11 against 1.59.0 for beta-1.60-1 [INFO] extracting crate flume 0.10.11 into /workspace/builds/worker-17/source [INFO] validating manifest of crates.io crate flume 0.10.11 on toolchain 1.59.0 [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.59.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking crates.io crate flume 0.10.11 [INFO] finished tweaking crates.io crate flume 0.10.11 [INFO] tweaked toml for crates.io crate flume 0.10.11 written to /workspace/builds/worker-17/source/Cargo.toml [INFO] crate crates.io crate flume 0.10.11 already has a lockfile, it will not be regenerated [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.59.0" "fetch" "--manifest-path" "Cargo.toml", 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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-17/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-17/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] a88b9c25e5e8d836ccd3683509493b9f177aaf9e8f54b358ba039a55642f3a13 [INFO] running `Command { std: "docker" "start" "-a" "a88b9c25e5e8d836ccd3683509493b9f177aaf9e8f54b358ba039a55642f3a13", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "a88b9c25e5e8d836ccd3683509493b9f177aaf9e8f54b358ba039a55642f3a13", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "a88b9c25e5e8d836ccd3683509493b9f177aaf9e8f54b358ba039a55642f3a13", kill_on_drop: false }` [INFO] [stdout] a88b9c25e5e8d836ccd3683509493b9f177aaf9e8f54b358ba039a55642f3a13 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-17/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-17/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] e721a72fa03f09cf28b66dd3a2138b55d09e3c0fbafb75ed98930207d2df7fe6 [INFO] running `Command { std: "docker" "start" "-a" "e721a72fa03f09cf28b66dd3a2138b55d09e3c0fbafb75ed98930207d2df7fe6", kill_on_drop: false }` [INFO] [stderr] Compiling libc v0.2.96 [INFO] [stderr] Compiling syn v1.0.73 [INFO] [stderr] Compiling futures-core v0.3.15 [INFO] [stderr] Compiling futures-sink v0.3.15 [INFO] [stderr] Compiling lock_api v0.4.4 [INFO] [stderr] Compiling spin v0.9.2 [INFO] [stderr] Compiling getrandom v0.2.3 [INFO] [stderr] Compiling nanorand v0.6.1 [INFO] [stderr] Compiling pin-project-internal v1.0.7 [INFO] [stderr] Compiling pin-project v1.0.7 [INFO] [stderr] Compiling flume v0.10.11 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused import: `MutexGuard as SpinlockGuard` [INFO] [stdout] --> src/lib.rs:50:32 [INFO] [stdout] | [INFO] [stdout] 50 | use spin1::{Mutex as Spinlock, MutexGuard as SpinlockGuard}; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 10.78s [INFO] running `Command { std: "docker" "inspect" "e721a72fa03f09cf28b66dd3a2138b55d09e3c0fbafb75ed98930207d2df7fe6", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "e721a72fa03f09cf28b66dd3a2138b55d09e3c0fbafb75ed98930207d2df7fe6", kill_on_drop: false }` [INFO] [stdout] e721a72fa03f09cf28b66dd3a2138b55d09e3c0fbafb75ed98930207d2df7fe6 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-17/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-17/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 9d535cfecbbe1138becac0b88bb9b535579c0d752e97bffa0870618831f03f28 [INFO] running `Command { std: "docker" "start" "-a" "9d535cfecbbe1138becac0b88bb9b535579c0d752e97bffa0870618831f03f28", kill_on_drop: false }` [INFO] [stderr] Compiling memchr v2.4.0 [INFO] [stderr] Compiling pin-project-lite v0.2.6 [INFO] [stderr] Compiling futures-io v0.3.15 [INFO] [stderr] Compiling crossbeam-utils v0.8.5 [INFO] [stderr] Compiling ucd-trie v0.1.3 [INFO] [stderr] Compiling cache-padded v1.1.1 [INFO] [stderr] Compiling log v0.4.14 [INFO] [stderr] Compiling slab v0.4.3 [INFO] [stderr] Compiling serde v1.0.126 [INFO] [stderr] Compiling event-listener v2.5.1 [INFO] [stderr] Compiling fastrand v1.4.1 [INFO] [stderr] Compiling parking v2.0.0 [INFO] [stderr] Compiling waker-fn v1.1.0 [INFO] [stderr] Compiling crossbeam-epoch v0.9.5 [INFO] [stderr] Compiling ryu v1.0.5 [INFO] [stderr] Compiling once_cell v1.7.2 [INFO] [stderr] Compiling futures-task v0.3.15 [INFO] [stderr] Compiling proc-macro-nested v0.1.7 [INFO] [stderr] Compiling rayon-core v1.9.1 [INFO] [stderr] Compiling futures-channel v0.3.15 [INFO] [stderr] Compiling either v1.6.1 [INFO] [stderr] Compiling async-task v4.0.3 [INFO] [stderr] Compiling itoa v0.4.7 [INFO] [stderr] Compiling signal-hook v0.3.9 [INFO] [stderr] Compiling serde_json v1.0.64 [INFO] [stderr] Compiling atomic-waker v1.0.0 [INFO] [stderr] Compiling serde_derive v1.0.126 [INFO] [stderr] Compiling plotters-backend v0.3.0 [INFO] [stderr] Compiling regex-automata v0.1.10 [INFO] [stderr] Compiling half v1.7.1 [INFO] [stderr] Compiling same-file v1.0.6 [INFO] [stderr] Compiling ppv-lite86 v0.2.10 [INFO] [stderr] Compiling regex-syntax v0.6.25 [INFO] [stderr] Compiling oorandom v11.1.3 [INFO] [stderr] Compiling value-bag v1.0.0-alpha.7 [INFO] [stderr] Compiling memoffset v0.6.4 [INFO] [stderr] Compiling futures-macro v0.3.15 [INFO] [stderr] Compiling num-traits v0.2.14 [INFO] [stderr] Compiling futures-util v0.3.15 [INFO] [stderr] Compiling rayon v1.5.1 [INFO] [stderr] Compiling num_cpus v1.13.0 [INFO] [stderr] Compiling socket2 v0.4.0 [INFO] [stderr] Compiling signal-hook-registry v1.4.0 [INFO] [stderr] Compiling atty v0.2.14 [INFO] [stderr] Compiling rand_core v0.6.2 [INFO] [stderr] Compiling clap v2.33.3 [INFO] [stderr] Compiling ctor v0.1.20 [INFO] [stderr] Compiling async-attributes v1.1.2 [INFO] [stderr] Compiling tokio-macros v1.7.0 [INFO] [stdout] warning: unused import: `MutexGuard as SpinlockGuard` [INFO] [stdout] --> src/lib.rs:50:32 [INFO] [stdout] | [INFO] [stdout] 50 | use spin1::{Mutex as Spinlock, MutexGuard as SpinlockGuard}; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Compiling async-mutex v1.4.0 [INFO] [stderr] Compiling async-lock v2.4.0 [INFO] [stderr] Compiling concurrent-queue v1.2.2 [INFO] [stderr] Compiling itertools v0.9.0 [INFO] [stderr] Compiling itertools v0.10.1 [INFO] [stderr] Compiling pest v2.1.3 [INFO] [stderr] Compiling plotters-svg v0.3.0 [INFO] [stderr] Compiling walkdir v2.3.2 [INFO] [stderr] Compiling rand_chacha v0.3.1 [INFO] [stderr] Compiling async-channel v1.6.1 [INFO] [stderr] Compiling crossbeam-channel v0.5.1 [INFO] [stderr] Compiling rand v0.8.3 [INFO] [stderr] Compiling futures-lite v1.12.0 [INFO] [stderr] Compiling csv-core v0.1.10 [INFO] [stderr] Compiling semver-parser v0.10.2 [INFO] [stderr] Compiling regex v1.5.4 [INFO] [stderr] Compiling tokio v1.16.1 [INFO] [stderr] Compiling crossbeam-deque v0.8.1 [INFO] [stderr] Compiling semver v0.11.0 [INFO] [stderr] Compiling plotters v0.3.1 [INFO] [stderr] Compiling polling v2.0.3 [INFO] [stderr] Compiling kv-log-macro v1.0.7 [INFO] [stderr] Compiling blocking v1.0.2 [INFO] [stderr] Compiling async-executor v1.4.1 [INFO] [stderr] Compiling rustc_version v0.3.3 [INFO] [stderr] Compiling async-io v1.4.1 [INFO] [stderr] Compiling cast v0.2.6 [INFO] [stderr] Compiling async-process v1.1.0 [INFO] [stderr] Compiling async-global-executor v2.0.2 [INFO] [stderr] Compiling async-std v1.9.0 [INFO] [stderr] Compiling criterion-plot v0.4.3 [INFO] [stderr] Compiling bstr v0.2.16 [INFO] [stderr] Compiling serde_cbor v0.11.1 [INFO] [stderr] Compiling csv v1.1.6 [INFO] [stderr] Compiling tinytemplate v1.2.1 [INFO] [stderr] Compiling criterion v0.3.4 [INFO] [stderr] Compiling futures-executor v0.3.15 [INFO] [stderr] Compiling futures v0.3.15 [INFO] [stderr] Compiling flume v0.10.11 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused import: `RecvError` [INFO] [stdout] --> tests/list.rs:13:13 [INFO] [stdout] | [INFO] [stdout] 13 | use flume::{RecvError, RecvTimeoutError, TryRecvError}; [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `RecvError` [INFO] [stdout] --> tests/zero.rs:13:13 [INFO] [stdout] | [INFO] [stdout] 13 | use flume::{RecvError, RecvTimeoutError, TryRecvError}; [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `RecvError` [INFO] [stdout] --> tests/array.rs:13:13 [INFO] [stdout] | [INFO] [stdout] 13 | use flume::{RecvError, RecvTimeoutError, TryRecvError}; [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unnecessary braces around block return value [INFO] [stdout] --> tests/mpsc.rs:1689:34 [INFO] [stdout] | [INFO] [stdout] 1689 | _bar = rx2.recv() => { panic!() } [INFO] [stdout] | ^^ ^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_braces)]` on by default [INFO] [stdout] help: remove these braces [INFO] [stdout] | [INFO] [stdout] 1689 - _bar = rx2.recv() => { panic!() } [INFO] [stdout] 1689 + _bar = rx2.recv() => panic!() [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unnecessary braces around block return value [INFO] [stdout] --> tests/mpsc.rs:1693:34 [INFO] [stdout] | [INFO] [stdout] 1693 | _foo = rx1.recv() => { panic!() }, [INFO] [stdout] | ^^ ^^ [INFO] [stdout] | [INFO] [stdout] help: remove these braces [INFO] [stdout] | [INFO] [stdout] 1693 - _foo = rx1.recv() => { panic!() }, [INFO] [stdout] 1693 + _foo = rx1.recv() => panic!(), [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unnecessary braces around block return value [INFO] [stdout] --> tests/mpsc.rs:1694:33 [INFO] [stdout] | [INFO] [stdout] 1694 | bar = rx2.recv() => { assert_eq!(bar.unwrap(), 2) } [INFO] [stdout] | ^^ ^^ [INFO] [stdout] | [INFO] [stdout] help: remove these braces [INFO] [stdout] | [INFO] [stdout] 1694 - bar = rx2.recv() => { assert_eq!(bar.unwrap(), 2) } [INFO] [stdout] 1694 + bar = rx2.recv() => assert_eq!(bar.unwrap(), 2) [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unnecessary braces around block return value [INFO] [stdout] --> tests/mpsc.rs:1699:34 [INFO] [stdout] | [INFO] [stdout] 1699 | _bar = rx2.recv() => { panic!() } [INFO] [stdout] | ^^ ^^ [INFO] [stdout] | [INFO] [stdout] help: remove these braces [INFO] [stdout] | [INFO] [stdout] 1699 - _bar = rx2.recv() => { panic!() } [INFO] [stdout] 1699 + _bar = rx2.recv() => panic!() [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unnecessary braces around block return value [INFO] [stdout] --> tests/mpsc.rs:1716:34 [INFO] [stdout] | [INFO] [stdout] 1716 | _foo = rx1.recv() => { panic!("1") }, [INFO] [stdout] | ^^ ^^ [INFO] [stdout] | [INFO] [stdout] help: remove these braces [INFO] [stdout] | [INFO] [stdout] 1716 - _foo = rx1.recv() => { panic!("1") }, [INFO] [stdout] 1716 + _foo = rx1.recv() => panic!("1"), [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unnecessary braces around block return value [INFO] [stdout] --> tests/mpsc.rs:1717:34 [INFO] [stdout] | [INFO] [stdout] 1717 | _foo = rx2.recv() => { panic!("2") }, [INFO] [stdout] | ^^ ^^ [INFO] [stdout] | [INFO] [stdout] help: remove these braces [INFO] [stdout] | [INFO] [stdout] 1717 - _foo = rx2.recv() => { panic!("2") }, [INFO] [stdout] 1717 + _foo = rx2.recv() => panic!("2"), [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unnecessary braces around block return value [INFO] [stdout] --> tests/mpsc.rs:1718:34 [INFO] [stdout] | [INFO] [stdout] 1718 | _foo = rx3.recv() => { panic!("3") }, [INFO] [stdout] | ^^ ^^ [INFO] [stdout] | [INFO] [stdout] help: remove these braces [INFO] [stdout] | [INFO] [stdout] 1718 - _foo = rx3.recv() => { panic!("3") }, [INFO] [stdout] 1718 + _foo = rx3.recv() => panic!("3"), [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unnecessary braces around block return value [INFO] [stdout] --> tests/mpsc.rs:1719:34 [INFO] [stdout] | [INFO] [stdout] 1719 | _foo = rx4.recv() => { panic!("4") }, [INFO] [stdout] | ^^ ^^ [INFO] [stdout] | [INFO] [stdout] help: remove these braces [INFO] [stdout] | [INFO] [stdout] 1719 - _foo = rx4.recv() => { panic!("4") }, [INFO] [stdout] 1719 + _foo = rx4.recv() => panic!("4"), [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unnecessary braces around block return value [INFO] [stdout] --> tests/mpsc.rs:1731:33 [INFO] [stdout] | [INFO] [stdout] 1731 | _a1 = rx1.recv() => { panic!() }, [INFO] [stdout] | ^^ ^^ [INFO] [stdout] | [INFO] [stdout] help: remove these braces [INFO] [stdout] | [INFO] [stdout] 1731 - _a1 = rx1.recv() => { panic!() }, [INFO] [stdout] 1731 + _a1 = rx1.recv() => panic!(), [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unnecessary braces around block return value [INFO] [stdout] --> tests/mpsc.rs:1755:32 [INFO] [stdout] | [INFO] [stdout] 1755 | _b = rx2.recv() => { panic!() } [INFO] [stdout] | ^^ ^^ [INFO] [stdout] | [INFO] [stdout] help: remove these braces [INFO] [stdout] | [INFO] [stdout] 1755 - _b = rx2.recv() => { panic!() } [INFO] [stdout] 1755 + _b = rx2.recv() => panic!() [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unnecessary braces around block return value [INFO] [stdout] --> tests/mpsc.rs:1759:31 [INFO] [stdout] | [INFO] [stdout] 1759 | a = rx1.recv() => { assert!(a.is_err()) }, [INFO] [stdout] | ^^ ^^ [INFO] [stdout] | [INFO] [stdout] help: remove these braces [INFO] [stdout] | [INFO] [stdout] 1759 - a = rx1.recv() => { assert!(a.is_err()) }, [INFO] [stdout] 1759 + a = rx1.recv() => assert!(a.is_err()), [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unnecessary braces around block return value [INFO] [stdout] --> tests/mpsc.rs:1760:32 [INFO] [stdout] | [INFO] [stdout] 1760 | _b = rx2.recv() => { panic!() } [INFO] [stdout] | ^^ ^^ [INFO] [stdout] | [INFO] [stdout] help: remove these braces [INFO] [stdout] | [INFO] [stdout] 1760 - _b = rx2.recv() => { panic!() } [INFO] [stdout] 1760 + _b = rx2.recv() => panic!() [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `MutexGuard as SpinlockGuard` [INFO] [stdout] --> src/lib.rs:50:32 [INFO] [stdout] | [INFO] [stdout] 50 | use spin1::{Mutex as Spinlock, MutexGuard as SpinlockGuard}; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `item` [INFO] [stdout] --> tests/stream.rs:248:24 [INFO] [stdout] | [INFO] [stdout] 248 | .for_each(|item| async move {}); [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_item` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> tests/stream.rs:37:9 [INFO] [stdout] | [INFO] [stdout] 37 | tx.send(42); [INFO] [stdout] | ^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_must_use)]` on by default [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] error: could not compile `flume`; 2 warnings emitted [INFO] [stderr] [INFO] [stderr] Caused by: [INFO] [stderr] process didn't exit successfully: `rustc --crate-name stream --edition=2018 tests/stream.rs --error-format=json --json=diagnostic-rendered-ansi,future-incompat --emit=dep-info,link -C embed-bitcode=no -C debuginfo=2 --test --cfg 'feature="async"' --cfg 'feature="default"' --cfg 'feature="eventual-fairness"' --cfg 'feature="futures-core"' --cfg 'feature="futures-sink"' --cfg 'feature="nanorand"' --cfg 'feature="pin-project"' --cfg 'feature="select"' -C metadata=0ecd6a8440c6a13b -C extra-filename=-0ecd6a8440c6a13b --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern async_std=/opt/rustwide/target/debug/deps/libasync_std-19d0b92f6fd1f2e3.rlib --extern criterion=/opt/rustwide/target/debug/deps/libcriterion-4537330b4c245f60.rlib --extern crossbeam_channel=/opt/rustwide/target/debug/deps/libcrossbeam_channel-004b151aa64281c6.rlib --extern crossbeam_utils=/opt/rustwide/target/debug/deps/libcrossbeam_utils-5aec9e94286cd6c0.rlib --extern flume=/opt/rustwide/target/debug/deps/libflume-4e20f11a9a5336d1.rlib --extern futures=/opt/rustwide/target/debug/deps/libfutures-48dc8993a9a45c1a.rlib --extern futures_core=/opt/rustwide/target/debug/deps/libfutures_core-914607f7d2b478e7.rlib --extern futures_sink=/opt/rustwide/target/debug/deps/libfutures_sink-9b955b2064c45b74.rlib --extern nanorand=/opt/rustwide/target/debug/deps/libnanorand-5f18779e4fe18450.rlib --extern pin_project=/opt/rustwide/target/debug/deps/libpin_project-a47ff41f415cb5e2.rlib --extern rand=/opt/rustwide/target/debug/deps/librand-aa6f290f6a366073.rlib --extern spin1=/opt/rustwide/target/debug/deps/libspin-dd8255934ed864ab.rlib --extern tokio=/opt/rustwide/target/debug/deps/libtokio-188c36f0f292cd98.rlib --extern waker_fn=/opt/rustwide/target/debug/deps/libwaker_fn-4de703460d892bd7.rlib --cap-lints=warn` (signal: 9, SIGKILL: kill) [INFO] [stderr] warning: build failed, waiting for other jobs to finish... [INFO] [stdout] warning: 12 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] error: build failed [INFO] running `Command { std: "docker" "inspect" "9d535cfecbbe1138becac0b88bb9b535579c0d752e97bffa0870618831f03f28", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "9d535cfecbbe1138becac0b88bb9b535579c0d752e97bffa0870618831f03f28", kill_on_drop: false }` [INFO] [stdout] 9d535cfecbbe1138becac0b88bb9b535579c0d752e97bffa0870618831f03f28