[INFO] fetching crate future-utils 0.12.1...
[INFO] checking future-utils-0.12.1 against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] extracting crate future-utils 0.12.1 into /workspace/builds/worker-3-tc2/source
[INFO] started tweaking crates.io crate future-utils 0.12.1
[INFO] finished tweaking crates.io crate future-utils 0.12.1
[INFO] tweaked toml for crates.io crate future-utils 0.12.1 written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate future-utils 0.12.1 on toolchain 4f260f0f20b3133d20cfb50353c0221943af5796
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 59 packages to latest compatible versions
[INFO] [stderr]       Adding bytes v0.4.12 (available: v1.10.1)
[INFO] [stderr]       Adding futures v0.1.31 (available: v0.3.31)
[INFO] [stderr]       Adding log v0.3.9 (available: v0.4.28)
[INFO] [stderr]       Adding tokio v0.1.22 (available: v1.48.0)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2024
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 520c32d927feacc032ee12b371984becda5a01100af94904c789cded0972c84a
[INFO] running `Command { std: "docker" "start" "-a" "520c32d927feacc032ee12b371984becda5a01100af94904c789cded0972c84a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "520c32d927feacc032ee12b371984becda5a01100af94904c789cded0972c84a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "520c32d927feacc032ee12b371984becda5a01100af94904c789cded0972c84a", kill_on_drop: false }`
[INFO] [stdout] 520c32d927feacc032ee12b371984becda5a01100af94904c789cded0972c84a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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 -Dunmustuse_in_always_ok" "-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0461b57767c8c1cdcc3be9ec5df3ee56e51abb823393520e39f29c8d5b8b11f4
[INFO] running `Command { std: "docker" "start" "-a" "0461b57767c8c1cdcc3be9ec5df3ee56e51abb823393520e39f29c8d5b8b11f4", kill_on_drop: false }`
[INFO] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2024
[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 semver-parser v0.7.0
[INFO] [stderr]    Compiling memoffset v0.5.6
[INFO] [stderr]    Compiling crossbeam-epoch v0.8.2
[INFO] [stderr]     Checking lock_api v0.3.4
[INFO] [stderr]     Checking unwrap v1.2.1
[INFO] [stderr]     Checking iovec v0.1.4
[INFO] [stderr]     Checking net2 v0.2.39
[INFO] [stderr]     Checking bytes v0.4.12
[INFO] [stderr]     Checking mio v0.6.23
[INFO] [stderr]    Compiling semver v0.9.0
[INFO] [stderr]     Checking smallvec v0.6.14
[INFO] [stderr]    Compiling rustc_version v0.2.3
[INFO] [stderr]    Compiling parking_lot_core v0.6.3
[INFO] [stderr]    Compiling parking_lot v0.9.0
[INFO] [stderr]     Checking mio-uds v0.6.8
[INFO] [stderr]     Checking crossbeam-queue v0.2.3
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[INFO] [stderr]     Checking tokio-fs v0.1.7
[INFO] [stderr]     Checking tokio v0.1.22
[INFO] [stderr]     Checking future-utils v0.12.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/lib.rs:54:32
[INFO] [stdout]    |
[INFO] [stdout] 54 | pub type BoxFuture<T, E> = Box<Future<Item=T, Error=E>>;
[INFO] [stdout]    |                                ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` (part of `#[warn(rust_2021_compatibility)]`) on by default
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 54 | pub type BoxFuture<T, E> = Box<dyn Future<Item=T, Error=E>>;
[INFO] [stdout]    |                                +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/lib.rs:58:36
[INFO] [stdout]    |
[INFO] [stdout] 58 | pub type BoxSendFuture<T, E> = Box<Future<Item=T, Error=E> + Send>;
[INFO] [stdout]    |                                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 58 | pub type BoxSendFuture<T, E> = Box<dyn Future<Item=T, Error=E> + Send>;
[INFO] [stdout]    |                                    +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/lib.rs:55:32
[INFO] [stdout]    |
[INFO] [stdout] 55 | pub type BoxStream<T, E> = Box<Stream<Item=T, Error=E>>;
[INFO] [stdout]    |                                ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 55 | pub type BoxStream<T, E> = Box<dyn Stream<Item=T, Error=E>>;
[INFO] [stdout]    |                                +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/lib.rs:59:36
[INFO] [stdout]    |
[INFO] [stdout] 59 | pub type BoxSendStream<T, E> = Box<Stream<Item=T, Error=E> + Send>;
[INFO] [stdout]    |                                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 59 | pub type BoxSendStream<T, E> = Box<dyn Stream<Item=T, Error=E> + Send>;
[INFO] [stdout]    |                                    +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/resume_unwind.rs:21:25
[INFO] [stdout]    |
[INFO] [stdout] 21 |     F: Future<Error=Box<Any + Send + 'static>>,
[INFO] [stdout]    |                         ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 21 |     F: Future<Error=Box<dyn Any + Send + 'static>>,
[INFO] [stdout]    |                         +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/lib.rs:56:30
[INFO] [stdout]    |
[INFO] [stdout] 56 | pub type BoxSink<T, E> = Box<Sink<SinkItem=T, SinkError=E>>;
[INFO] [stdout]    |                              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 56 | pub type BoxSink<T, E> = Box<dyn Sink<SinkItem=T, SinkError=E>>;
[INFO] [stdout]    |                              +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/lib.rs:60:34
[INFO] [stdout]    |
[INFO] [stdout] 60 | pub type BoxSendSink<T, E> = Box<Sink<SinkItem=T, SinkError=E> + Send>;
[INFO] [stdout]    |                                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 60 | pub type BoxSendSink<T, E> = Box<dyn Sink<SinkItem=T, SinkError=E> + Send>;
[INFO] [stdout]    |                                  +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/lib.rs:62:28
[INFO] [stdout]    |
[INFO] [stdout] 62 | pub type IoFuture<T> = Box<Future<Item=T, Error=io::Error>>;
[INFO] [stdout]    |                            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 62 | pub type IoFuture<T> = Box<dyn Future<Item=T, Error=io::Error>>;
[INFO] [stdout]    |                            +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/lib.rs:63:28
[INFO] [stdout]    |
[INFO] [stdout] 63 | pub type IoStream<T> = Box<Stream<Item=T, Error=io::Error>>;
[INFO] [stdout]    |                            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 63 | pub type IoStream<T> = Box<dyn Stream<Item=T, Error=io::Error>>;
[INFO] [stdout]    |                            +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/lib.rs:64:26
[INFO] [stdout]    |
[INFO] [stdout] 64 | pub type IoSink<T> = Box<Sink<SinkItem=T, SinkError=io::Error>>;
[INFO] [stdout]    |                          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 64 | pub type IoSink<T> = Box<dyn Sink<SinkItem=T, SinkError=io::Error>>;
[INFO] [stdout]    |                          +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/future_ext.rs:109:32
[INFO] [stdout]     |
[INFO] [stdout] 109 |         Self: Future<Error=Box<Any + Send + 'static>>,
[INFO] [stdout]     |                                ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 109 |         Self: Future<Error=Box<dyn Any + Send + 'static>>,
[INFO] [stdout]     |                                +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/lib.rs:54:32
[INFO] [stdout]    |
[INFO] [stdout] 54 | pub type BoxFuture<T, E> = Box<Future<Item=T, Error=E>>;
[INFO] [stdout]    |                                ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` (part of `#[warn(rust_2021_compatibility)]`) on by default
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 54 | pub type BoxFuture<T, E> = Box<dyn Future<Item=T, Error=E>>;
[INFO] [stdout]    |                                +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/lib.rs:58:36
[INFO] [stdout]    |
[INFO] [stdout] 58 | pub type BoxSendFuture<T, E> = Box<Future<Item=T, Error=E> + Send>;
[INFO] [stdout]    |                                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 58 | pub type BoxSendFuture<T, E> = Box<dyn Future<Item=T, Error=E> + Send>;
[INFO] [stdout]    |                                    +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/lib.rs:55:32
[INFO] [stdout]    |
[INFO] [stdout] 55 | pub type BoxStream<T, E> = Box<Stream<Item=T, Error=E>>;
[INFO] [stdout]    |                                ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 55 | pub type BoxStream<T, E> = Box<dyn Stream<Item=T, Error=E>>;
[INFO] [stdout]    |                                +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/lib.rs:59:36
[INFO] [stdout]    |
[INFO] [stdout] 59 | pub type BoxSendStream<T, E> = Box<Stream<Item=T, Error=E> + Send>;
[INFO] [stdout]    |                                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 59 | pub type BoxSendStream<T, E> = Box<dyn Stream<Item=T, Error=E> + Send>;
[INFO] [stdout]    |                                    +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/resume_unwind.rs:21:25
[INFO] [stdout]    |
[INFO] [stdout] 21 |     F: Future<Error=Box<Any + Send + 'static>>,
[INFO] [stdout]    |                         ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 21 |     F: Future<Error=Box<dyn Any + Send + 'static>>,
[INFO] [stdout]    |                         +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Async<()>, Void>
[INFO] [stdout]   --> src/drop_notify.rs:45:51
[INFO] [stdout]    |
[INFO] [stdout] 45 |       fn poll(&mut self) -> Result<Async<()>, Void> {
[INFO] [stdout]    |  ___________________________________________________^
[INFO] [stdout] 46 | |         if let Async::Ready(ref mut inner) = self.inner.poll_lock() {
[INFO] [stdout] 47 | |             if inner.dropped {
[INFO] [stdout] 48 | |                 return Ok(Async::Ready(()));
[INFO] [stdout] ...  |
[INFO] [stdout] 56 | |     }
[INFO] [stdout]    | |_____^
[INFO] [stdout]    |
[INFO] [stdout]    = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/lib.rs:56:30
[INFO] [stdout]    |
[INFO] [stdout] 56 | pub type BoxSink<T, E> = Box<Sink<SinkItem=T, SinkError=E>>;
[INFO] [stdout]    |                              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 56 | pub type BoxSink<T, E> = Box<dyn Sink<SinkItem=T, SinkError=E>>;
[INFO] [stdout]    |                              +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Async<()>, Void>
[INFO] [stdout]   --> src/drop_notify.rs:46:9
[INFO] [stdout]    |
[INFO] [stdout] 46 | /         if let Async::Ready(ref mut inner) = self.inner.poll_lock() {
[INFO] [stdout] 47 | |             if inner.dropped {
[INFO] [stdout] 48 | |                 return Ok(Async::Ready(()));
[INFO] [stdout] ...  |
[INFO] [stdout] 54 | |             Ok(Async::Ready(()))
[INFO] [stdout] 55 | |         }
[INFO] [stdout]    | |_________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Async<()>, Void>
[INFO] [stdout]   --> src/drop_notify.rs:46:69
[INFO] [stdout]    |
[INFO] [stdout] 46 |           if let Async::Ready(ref mut inner) = self.inner.poll_lock() {
[INFO] [stdout]    |  _____________________________________________________________________^
[INFO] [stdout] 47 | |             if inner.dropped {
[INFO] [stdout] 48 | |                 return Ok(Async::Ready(()));
[INFO] [stdout] ...  |
[INFO] [stdout] 51 | |             Ok(Async::NotReady)
[INFO] [stdout] 52 | |         } else {
[INFO] [stdout]    | |_________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Async<()>, Void>
[INFO] [stdout]   --> src/drop_notify.rs:48:24
[INFO] [stdout]    |
[INFO] [stdout] 48 |                 return Ok(Async::Ready(()));
[INFO] [stdout]    |                        ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/lib.rs:60:34
[INFO] [stdout]    |
[INFO] [stdout] 60 | pub type BoxSendSink<T, E> = Box<Sink<SinkItem=T, SinkError=E> + Send>;
[INFO] [stdout]    |                                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 60 | pub type BoxSendSink<T, E> = Box<dyn Sink<SinkItem=T, SinkError=E> + Send>;
[INFO] [stdout]    |                                  +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Async<()>, Void>
[INFO] [stdout]   --> src/drop_notify.rs:51:13
[INFO] [stdout]    |
[INFO] [stdout] 51 |             Ok(Async::NotReady)
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Async<()>, Void>
[INFO] [stdout]   --> src/drop_notify.rs:52:16
[INFO] [stdout]    |
[INFO] [stdout] 52 |           } else {
[INFO] [stdout]    |  ________________^
[INFO] [stdout] 53 | |             // If it's locked then the notifier must be being dropped.
[INFO] [stdout] 54 | |             Ok(Async::Ready(()))
[INFO] [stdout] 55 | |         }
[INFO] [stdout]    | |_________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Async<()>, Void>
[INFO] [stdout]   --> src/drop_notify.rs:54:13
[INFO] [stdout]    |
[INFO] [stdout] 54 |             Ok(Async::Ready(()))
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/lib.rs:62:28
[INFO] [stdout]    |
[INFO] [stdout] 62 | pub type IoFuture<T> = Box<Future<Item=T, Error=io::Error>>;
[INFO] [stdout]    |                            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 62 | pub type IoFuture<T> = Box<dyn Future<Item=T, Error=io::Error>>;
[INFO] [stdout]    |                            +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/lib.rs:63:28
[INFO] [stdout]    |
[INFO] [stdout] 63 | pub type IoStream<T> = Box<Stream<Item=T, Error=io::Error>>;
[INFO] [stdout]    |                            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 63 | pub type IoStream<T> = Box<dyn Stream<Item=T, Error=io::Error>>;
[INFO] [stdout]    |                            +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/lib.rs:64:26
[INFO] [stdout]    |
[INFO] [stdout] 64 | pub type IoSink<T> = Box<Sink<SinkItem=T, SinkError=io::Error>>;
[INFO] [stdout]    |                          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 64 | pub type IoSink<T> = Box<dyn Sink<SinkItem=T, SinkError=io::Error>>;
[INFO] [stdout]    |                          +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Async<Option<<S as Stream>::Item>>, Void>
[INFO] [stdout]   --> src/log_errors.rs:35:64
[INFO] [stdout]    |
[INFO] [stdout] 35 |       fn poll(&mut self) -> Result<Async<Option<S::Item>>, Void> {
[INFO] [stdout]    |  ________________________________________________________________^
[INFO] [stdout] 36 | |         match self.stream.poll() {
[INFO] [stdout] 37 | |             Ok(x) => Ok(x),
[INFO] [stdout] 38 | |             Err(e) => {
[INFO] [stdout] ...  |
[INFO] [stdout] 43 | |     }
[INFO] [stdout]    | |_____^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Async<Option<<S as Stream>::Item>>, Void>
[INFO] [stdout]   --> src/log_errors.rs:36:9
[INFO] [stdout]    |
[INFO] [stdout] 36 | /         match self.stream.poll() {
[INFO] [stdout] 37 | |             Ok(x) => Ok(x),
[INFO] [stdout] 38 | |             Err(e) => {
[INFO] [stdout] 39 | |                 log!(self.level, "{}: {}", self.description, e);
[INFO] [stdout] 40 | |                 Ok(Async::NotReady)
[INFO] [stdout] 41 | |             },
[INFO] [stdout] 42 | |         }
[INFO] [stdout]    | |_________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Async<Option<<S as Stream>::Item>>, Void>
[INFO] [stdout]   --> src/log_errors.rs:37:22
[INFO] [stdout]    |
[INFO] [stdout] 37 |             Ok(x) => Ok(x),
[INFO] [stdout]    |                      ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Async<Option<<S as Stream>::Item>>, Void>
[INFO] [stdout]   --> src/log_errors.rs:38:23
[INFO] [stdout]    |
[INFO] [stdout] 38 |               Err(e) => {
[INFO] [stdout]    |  _______________________^
[INFO] [stdout] 39 | |                 log!(self.level, "{}: {}", self.description, e);
[INFO] [stdout] 40 | |                 Ok(Async::NotReady)
[INFO] [stdout] 41 | |             },
[INFO] [stdout]    | |_____________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Async<Option<<S as Stream>::Item>>, Void>
[INFO] [stdout]   --> src/log_errors.rs:40:17
[INFO] [stdout]    |
[INFO] [stdout] 40 |                 Ok(Async::NotReady)
[INFO] [stdout]    |                 ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Async<()>, Void>
[INFO] [stdout]   --> src/log_error.rs:36:51
[INFO] [stdout]    |
[INFO] [stdout] 36 |       fn poll(&mut self) -> Result<Async<()>, Void> {
[INFO] [stdout]    |  ___________________________________________________^
[INFO] [stdout] 37 | |         match self.future.poll() {
[INFO] [stdout] 38 | |             Ok(x) => Ok(x),
[INFO] [stdout] 39 | |             Err(e) => {
[INFO] [stdout] ...  |
[INFO] [stdout] 44 | |     }
[INFO] [stdout]    | |_____^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Async<()>, Void>
[INFO] [stdout]   --> src/log_error.rs:37:9
[INFO] [stdout]    |
[INFO] [stdout] 37 | /         match self.future.poll() {
[INFO] [stdout] 38 | |             Ok(x) => Ok(x),
[INFO] [stdout] 39 | |             Err(e) => {
[INFO] [stdout] 40 | |                 log!(self.level, "{}: {}", self.description, e);
[INFO] [stdout] 41 | |                 Ok(Async::Ready(()))
[INFO] [stdout] 42 | |             },
[INFO] [stdout] 43 | |         }
[INFO] [stdout]    | |_________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Async<()>, Void>
[INFO] [stdout]   --> src/log_error.rs:38:22
[INFO] [stdout]    |
[INFO] [stdout] 38 |             Ok(x) => Ok(x),
[INFO] [stdout]    |                      ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Async<()>, Void>
[INFO] [stdout]   --> src/log_error.rs:39:23
[INFO] [stdout]    |
[INFO] [stdout] 39 |               Err(e) => {
[INFO] [stdout]    |  _______________________^
[INFO] [stdout] 40 | |                 log!(self.level, "{}: {}", self.description, e);
[INFO] [stdout] 41 | |                 Ok(Async::Ready(()))
[INFO] [stdout] 42 | |             },
[INFO] [stdout]    | |_____________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Async<()>, Void>
[INFO] [stdout]   --> src/log_error.rs:41:17
[INFO] [stdout]    |
[INFO] [stdout] 41 |                 Ok(Async::Ready(()))
[INFO] [stdout]    |                 ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Async<<F as futures::Future>::Item>, Void>
[INFO] [stdout]   --> src/infallible.rs:29:9
[INFO] [stdout]    |
[INFO] [stdout] 29 |         self.inner.poll().map_err(|e| void::unreachable(e))
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Async<Option<<F as Stream>::Item>>, Void>
[INFO] [stdout]   --> src/infallible.rs:41:9
[INFO] [stdout]    |
[INFO] [stdout] 41 |         self.inner.poll().map_err(|e| void::unreachable(e))
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Async<()>, Void>
[INFO] [stdout]   --> src/delay.rs:30:51
[INFO] [stdout]    |
[INFO] [stdout] 30 |       fn poll(&mut self) -> Result<Async<()>, Void> {
[INFO] [stdout]    |  ___________________________________________________^
[INFO] [stdout] 31 | |         Ok(unwrap!(self.inner.poll()))
[INFO] [stdout] 32 | |     }
[INFO] [stdout]    | |_____^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Async<()>, Void>
[INFO] [stdout]   --> src/delay.rs:31:9
[INFO] [stdout]    |
[INFO] [stdout] 31 |         Ok(unwrap!(self.inner.poll()))
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Async<()>, Void>
[INFO] [stdout]   --> src/with_timeout.rs:43:35
[INFO] [stdout]    |
[INFO] [stdout] 43 |         if let Async::Ready(()) = self.delay.poll().void_unwrap() {
[INFO] [stdout]    |                                   ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Async<()>, Void>
[INFO] [stdout]   --> src/with_timeout.rs:63:35
[INFO] [stdout]    |
[INFO] [stdout] 63 |         if let Async::Ready(()) = self.delay.poll().void_unwrap() {
[INFO] [stdout]    |                                   ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/future_ext.rs:109:32
[INFO] [stdout]     |
[INFO] [stdout] 109 |         Self: Future<Error=Box<Any + Send + 'static>>,
[INFO] [stdout]     |                                ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 109 |         Self: Future<Error=Box<dyn Any + Send + 'static>>,
[INFO] [stdout]     |                                +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Async<R>, Void>
[INFO] [stdout]   --> src/thread_future.rs:38:50
[INFO] [stdout]    |
[INFO] [stdout] 38 |       fn poll(&mut self) -> Result<Async<R>, Void> {
[INFO] [stdout]    |  __________________________________________________^
[INFO] [stdout] 39 | |         match self.rx.poll() {
[INFO] [stdout] 40 | |             Ok(x) => Ok(x),
[INFO] [stdout] 41 | |             Err(oneshot::Canceled) => {
[INFO] [stdout] ...  |
[INFO] [stdout] 49 | |     }
[INFO] [stdout]    | |_____^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Async<R>, Void>
[INFO] [stdout]   --> src/thread_future.rs:39:9
[INFO] [stdout]    |
[INFO] [stdout] 39 | /         match self.rx.poll() {
[INFO] [stdout] 40 | |             Ok(x) => Ok(x),
[INFO] [stdout] 41 | |             Err(oneshot::Canceled) => {
[INFO] [stdout] ...  |
[INFO] [stdout] 47 | |             },
[INFO] [stdout] 48 | |         }
[INFO] [stdout]    | |_________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Async<R>, Void>
[INFO] [stdout]   --> src/thread_future.rs:40:22
[INFO] [stdout]    |
[INFO] [stdout] 40 |             Ok(x) => Ok(x),
[INFO] [stdout]    |                      ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `future-utils` (lib) due to 37 previous errors; 11 warnings emitted
[INFO] [stdout] error: this type will no longer be must used: Result<Async<R>, Void>
[INFO] [stdout]   --> src/thread_future.rs:41:39
[INFO] [stdout]    |
[INFO] [stdout] 41 |               Err(oneshot::Canceled) => {
[INFO] [stdout]    |  _______________________________________^
[INFO] [stdout] 42 | |                 // The thread must have died. Get the error.
[INFO] [stdout] 43 | |                 match unwrap!(self.join_handle.take()).join() {
[INFO] [stdout] 44 | |                     Ok(()) => unreachable!(),
[INFO] [stdout] ...  |
[INFO] [stdout] 47 | |             },
[INFO] [stdout]    | |_____________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error: this type will no longer be must used: Result<Async<R>, Void>
[INFO] [stdout]   --> src/thread_future.rs:43:17
[INFO] [stdout]    |
[INFO] [stdout] 43 | /                 match unwrap!(self.join_handle.take()).join() {
[INFO] [stdout] 44 | |                     Ok(()) => unreachable!(),
[INFO] [stdout] 45 | |                     Err(e) => panic::resume_unwind(e),
[INFO] [stdout] 46 | |                 }
[INFO] [stdout]    | |_________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Async<<F as futures::Future>::Item>, Void>
[INFO] [stdout]   --> src/resume_unwind.rs:26:56
[INFO] [stdout]    |
[INFO] [stdout] 26 |       fn poll(&mut self) -> Result<Async<F::Item>, Void> {
[INFO] [stdout]    |  ________________________________________________________^
[INFO] [stdout] 27 | |         match self.future.poll() {
[INFO] [stdout] 28 | |             Ok(Async::Ready(x)) => Ok(Async::Ready(x)),
[INFO] [stdout] 29 | |             Ok(Async::NotReady) => Ok(Async::NotReady),
[INFO] [stdout] ...  |
[INFO] [stdout] 32 | |     }
[INFO] [stdout]    | |_____^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Async<<F as futures::Future>::Item>, Void>
[INFO] [stdout]   --> src/resume_unwind.rs:27:9
[INFO] [stdout]    |
[INFO] [stdout] 27 | /         match self.future.poll() {
[INFO] [stdout] 28 | |             Ok(Async::Ready(x)) => Ok(Async::Ready(x)),
[INFO] [stdout] 29 | |             Ok(Async::NotReady) => Ok(Async::NotReady),
[INFO] [stdout] 30 | |             Err(e) => panic::resume_unwind(e),
[INFO] [stdout] 31 | |         }
[INFO] [stdout]    | |_________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Async<<F as futures::Future>::Item>, Void>
[INFO] [stdout]   --> src/resume_unwind.rs:28:36
[INFO] [stdout]    |
[INFO] [stdout] 28 |             Ok(Async::Ready(x)) => Ok(Async::Ready(x)),
[INFO] [stdout]    |                                    ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Async<<F as futures::Future>::Item>, Void>
[INFO] [stdout]   --> src/resume_unwind.rs:29:36
[INFO] [stdout]    |
[INFO] [stdout] 29 |             Ok(Async::NotReady) => Ok(Async::NotReady),
[INFO] [stdout]    |                                    ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Async<()>, Void>
[INFO] [stdout]   --> src/with_readiness_timeout.rs:33:23
[INFO] [stdout]    |
[INFO] [stdout] 33 |                 match self.delay.poll().void_unwrap() {
[INFO] [stdout]    |                       ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Async<Option<T>>, Void>
[INFO] [stdout]   --> src/bi_channel.rs:35:58
[INFO] [stdout]    |
[INFO] [stdout] 35 |       fn poll(&mut self) -> Result<Async<Option<T>>, Void> {
[INFO] [stdout]    |  __________________________________________________________^
[INFO] [stdout] 36 | |         self.rx.poll()
[INFO] [stdout] 37 | |     }
[INFO] [stdout]    | |_____^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Async<Option<T>>, Void>
[INFO] [stdout]   --> src/bi_channel.rs:36:9
[INFO] [stdout]    |
[INFO] [stdout] 36 |         self.rx.poll()
[INFO] [stdout]    |         ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Async<Option<T>>, Void>
[INFO] [stdout]   --> src/mpsc.rs:23:58
[INFO] [stdout]    |
[INFO] [stdout] 23 |       fn poll(&mut self) -> Result<Async<Option<T>>, Void> {
[INFO] [stdout]    |  __________________________________________________________^
[INFO] [stdout] 24 | |         Ok(unwrap!(self.inner.poll()))
[INFO] [stdout] 25 | |     }
[INFO] [stdout]    | |_____^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Async<Option<T>>, Void>
[INFO] [stdout]   --> src/mpsc.rs:24:9
[INFO] [stdout]    |
[INFO] [stdout] 24 |         Ok(unwrap!(self.inner.poll()))
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Async<()>, Void>
[INFO] [stdout]   --> src/drop_notify.rs:45:51
[INFO] [stdout]    |
[INFO] [stdout] 45 |       fn poll(&mut self) -> Result<Async<()>, Void> {
[INFO] [stdout]    |  ___________________________________________________^
[INFO] [stdout] 46 | |         if let Async::Ready(ref mut inner) = self.inner.poll_lock() {
[INFO] [stdout] 47 | |             if inner.dropped {
[INFO] [stdout] 48 | |                 return Ok(Async::Ready(()));
[INFO] [stdout] ...  |
[INFO] [stdout] 56 | |     }
[INFO] [stdout]    | |_____^
[INFO] [stdout]    |
[INFO] [stdout]    = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Async<()>, Void>
[INFO] [stdout]   --> src/drop_notify.rs:46:9
[INFO] [stdout]    |
[INFO] [stdout] 46 | /         if let Async::Ready(ref mut inner) = self.inner.poll_lock() {
[INFO] [stdout] 47 | |             if inner.dropped {
[INFO] [stdout] 48 | |                 return Ok(Async::Ready(()));
[INFO] [stdout] ...  |
[INFO] [stdout] 54 | |             Ok(Async::Ready(()))
[INFO] [stdout] 55 | |         }
[INFO] [stdout]    | |_________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Async<()>, Void>
[INFO] [stdout]   --> src/drop_notify.rs:46:69
[INFO] [stdout]    |
[INFO] [stdout] 46 |           if let Async::Ready(ref mut inner) = self.inner.poll_lock() {
[INFO] [stdout]    |  _____________________________________________________________________^
[INFO] [stdout] 47 | |             if inner.dropped {
[INFO] [stdout] 48 | |                 return Ok(Async::Ready(()));
[INFO] [stdout] ...  |
[INFO] [stdout] 51 | |             Ok(Async::NotReady)
[INFO] [stdout] 52 | |         } else {
[INFO] [stdout]    | |_________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Async<()>, Void>
[INFO] [stdout]   --> src/drop_notify.rs:48:24
[INFO] [stdout]    |
[INFO] [stdout] 48 |                 return Ok(Async::Ready(()));
[INFO] [stdout]    |                        ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Async<()>, Void>
[INFO] [stdout]   --> src/drop_notify.rs:51:13
[INFO] [stdout]    |
[INFO] [stdout] 51 |             Ok(Async::NotReady)
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Async<()>, Void>
[INFO] [stdout]   --> src/drop_notify.rs:52:16
[INFO] [stdout]    |
[INFO] [stdout] 52 |           } else {
[INFO] [stdout]    |  ________________^
[INFO] [stdout] 53 | |             // If it's locked then the notifier must be being dropped.
[INFO] [stdout] 54 | |             Ok(Async::Ready(()))
[INFO] [stdout] 55 | |         }
[INFO] [stdout]    | |_________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Async<()>, Void>
[INFO] [stdout]   --> src/drop_notify.rs:54:13
[INFO] [stdout]    |
[INFO] [stdout] 54 |             Ok(Async::Ready(()))
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Async<Option<<S as Stream>::Item>>, Void>
[INFO] [stdout]   --> src/log_errors.rs:35:64
[INFO] [stdout]    |
[INFO] [stdout] 35 |       fn poll(&mut self) -> Result<Async<Option<S::Item>>, Void> {
[INFO] [stdout]    |  ________________________________________________________________^
[INFO] [stdout] 36 | |         match self.stream.poll() {
[INFO] [stdout] 37 | |             Ok(x) => Ok(x),
[INFO] [stdout] 38 | |             Err(e) => {
[INFO] [stdout] ...  |
[INFO] [stdout] 43 | |     }
[INFO] [stdout]    | |_____^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Async<Option<<S as Stream>::Item>>, Void>
[INFO] [stdout]   --> src/log_errors.rs:36:9
[INFO] [stdout]    |
[INFO] [stdout] 36 | /         match self.stream.poll() {
[INFO] [stdout] 37 | |             Ok(x) => Ok(x),
[INFO] [stdout] 38 | |             Err(e) => {
[INFO] [stdout] 39 | |                 log!(self.level, "{}: {}", self.description, e);
[INFO] [stdout] 40 | |                 Ok(Async::NotReady)
[INFO] [stdout] 41 | |             },
[INFO] [stdout] 42 | |         }
[INFO] [stdout]    | |_________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Async<Option<<S as Stream>::Item>>, Void>
[INFO] [stdout]   --> src/log_errors.rs:37:22
[INFO] [stdout]    |
[INFO] [stdout] 37 |             Ok(x) => Ok(x),
[INFO] [stdout]    |                      ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Async<Option<<S as Stream>::Item>>, Void>
[INFO] [stdout]   --> src/log_errors.rs:38:23
[INFO] [stdout]    |
[INFO] [stdout] 38 |               Err(e) => {
[INFO] [stdout]    |  _______________________^
[INFO] [stdout] 39 | |                 log!(self.level, "{}: {}", self.description, e);
[INFO] [stdout] 40 | |                 Ok(Async::NotReady)
[INFO] [stdout] 41 | |             },
[INFO] [stdout]    | |_____________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Async<Option<<S as Stream>::Item>>, Void>
[INFO] [stdout]   --> src/log_errors.rs:40:17
[INFO] [stdout]    |
[INFO] [stdout] 40 |                 Ok(Async::NotReady)
[INFO] [stdout]    |                 ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Async<()>, Void>
[INFO] [stdout]   --> src/log_error.rs:36:51
[INFO] [stdout]    |
[INFO] [stdout] 36 |       fn poll(&mut self) -> Result<Async<()>, Void> {
[INFO] [stdout]    |  ___________________________________________________^
[INFO] [stdout] 37 | |         match self.future.poll() {
[INFO] [stdout] 38 | |             Ok(x) => Ok(x),
[INFO] [stdout] 39 | |             Err(e) => {
[INFO] [stdout] ...  |
[INFO] [stdout] 44 | |     }
[INFO] [stdout]    | |_____^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Async<()>, Void>
[INFO] [stdout]   --> src/log_error.rs:37:9
[INFO] [stdout]    |
[INFO] [stdout] 37 | /         match self.future.poll() {
[INFO] [stdout] 38 | |             Ok(x) => Ok(x),
[INFO] [stdout] 39 | |             Err(e) => {
[INFO] [stdout] 40 | |                 log!(self.level, "{}: {}", self.description, e);
[INFO] [stdout] 41 | |                 Ok(Async::Ready(()))
[INFO] [stdout] 42 | |             },
[INFO] [stdout] 43 | |         }
[INFO] [stdout]    | |_________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Async<()>, Void>
[INFO] [stdout]   --> src/log_error.rs:38:22
[INFO] [stdout]    |
[INFO] [stdout] 38 |             Ok(x) => Ok(x),
[INFO] [stdout]    |                      ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Async<()>, Void>
[INFO] [stdout]   --> src/log_error.rs:39:23
[INFO] [stdout]    |
[INFO] [stdout] 39 |               Err(e) => {
[INFO] [stdout]    |  _______________________^
[INFO] [stdout] 40 | |                 log!(self.level, "{}: {}", self.description, e);
[INFO] [stdout] 41 | |                 Ok(Async::Ready(()))
[INFO] [stdout] 42 | |             },
[INFO] [stdout]    | |_____________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Async<()>, Void>
[INFO] [stdout]   --> src/log_error.rs:41:17
[INFO] [stdout]    |
[INFO] [stdout] 41 |                 Ok(Async::Ready(()))
[INFO] [stdout]    |                 ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Async<<F as futures::Future>::Item>, Void>
[INFO] [stdout]   --> src/infallible.rs:29:9
[INFO] [stdout]    |
[INFO] [stdout] 29 |         self.inner.poll().map_err(|e| void::unreachable(e))
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Async<Option<<F as Stream>::Item>>, Void>
[INFO] [stdout]   --> src/infallible.rs:41:9
[INFO] [stdout]    |
[INFO] [stdout] 41 |         self.inner.poll().map_err(|e| void::unreachable(e))
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Async<()>, Void>
[INFO] [stdout]   --> src/delay.rs:30:51
[INFO] [stdout]    |
[INFO] [stdout] 30 |       fn poll(&mut self) -> Result<Async<()>, Void> {
[INFO] [stdout]    |  ___________________________________________________^
[INFO] [stdout] 31 | |         Ok(unwrap!(self.inner.poll()))
[INFO] [stdout] 32 | |     }
[INFO] [stdout]    | |_____^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Async<()>, Void>
[INFO] [stdout]   --> src/delay.rs:31:9
[INFO] [stdout]    |
[INFO] [stdout] 31 |         Ok(unwrap!(self.inner.poll()))
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Async<()>, Void>
[INFO] [stdout]   --> src/with_timeout.rs:43:35
[INFO] [stdout]    |
[INFO] [stdout] 43 |         if let Async::Ready(()) = self.delay.poll().void_unwrap() {
[INFO] [stdout]    |                                   ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Async<()>, Void>
[INFO] [stdout]   --> src/with_timeout.rs:63:35
[INFO] [stdout]    |
[INFO] [stdout] 63 |         if let Async::Ready(()) = self.delay.poll().void_unwrap() {
[INFO] [stdout]    |                                   ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Async<R>, Void>
[INFO] [stdout]   --> src/thread_future.rs:38:50
[INFO] [stdout]    |
[INFO] [stdout] 38 |       fn poll(&mut self) -> Result<Async<R>, Void> {
[INFO] [stdout]    |  __________________________________________________^
[INFO] [stdout] 39 | |         match self.rx.poll() {
[INFO] [stdout] 40 | |             Ok(x) => Ok(x),
[INFO] [stdout] 41 | |             Err(oneshot::Canceled) => {
[INFO] [stdout] ...  |
[INFO] [stdout] 49 | |     }
[INFO] [stdout]    | |_____^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Async<R>, Void>
[INFO] [stdout]   --> src/thread_future.rs:39:9
[INFO] [stdout]    |
[INFO] [stdout] 39 | /         match self.rx.poll() {
[INFO] [stdout] 40 | |             Ok(x) => Ok(x),
[INFO] [stdout] 41 | |             Err(oneshot::Canceled) => {
[INFO] [stdout] ...  |
[INFO] [stdout] 47 | |             },
[INFO] [stdout] 48 | |         }
[INFO] [stdout]    | |_________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Async<R>, Void>
[INFO] [stdout]   --> src/thread_future.rs:40:22
[INFO] [stdout]    |
[INFO] [stdout] 40 |             Ok(x) => Ok(x),
[INFO] [stdout]    |                      ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Async<R>, Void>
[INFO] [stdout]   --> src/thread_future.rs:41:39
[INFO] [stdout]    |
[INFO] [stdout] 41 |               Err(oneshot::Canceled) => {
[INFO] [stdout]    |  _______________________________________^
[INFO] [stdout] 42 | |                 // The thread must have died. Get the error.
[INFO] [stdout] 43 | |                 match unwrap!(self.join_handle.take()).join() {
[INFO] [stdout] 44 | |                     Ok(()) => unreachable!(),
[INFO] [stdout] ...  |
[INFO] [stdout] 47 | |             },
[INFO] [stdout]    | |_____________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Async<R>, Void>
[INFO] [stdout]   --> src/thread_future.rs:43:17
[INFO] [stdout]    |
[INFO] [stdout] 43 | /                 match unwrap!(self.join_handle.take()).join() {
[INFO] [stdout] 44 | |                     Ok(()) => unreachable!(),
[INFO] [stdout] 45 | |                     Err(e) => panic::resume_unwind(e),
[INFO] [stdout] 46 | |                 }
[INFO] [stdout]    | |_________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Async<<F as futures::Future>::Item>, Void>
[INFO] [stdout]   --> src/resume_unwind.rs:26:56
[INFO] [stdout]    |
[INFO] [stdout] 26 |       fn poll(&mut self) -> Result<Async<F::Item>, Void> {
[INFO] [stdout]    |  ________________________________________________________^
[INFO] [stdout] 27 | |         match self.future.poll() {
[INFO] [stdout] 28 | |             Ok(Async::Ready(x)) => Ok(Async::Ready(x)),
[INFO] [stdout] 29 | |             Ok(Async::NotReady) => Ok(Async::NotReady),
[INFO] [stdout] ...  |
[INFO] [stdout] 32 | |     }
[INFO] [stdout]    | |_____^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Async<<F as futures::Future>::Item>, Void>
[INFO] [stdout]   --> src/resume_unwind.rs:27:9
[INFO] [stdout]    |
[INFO] [stdout] 27 | /         match self.future.poll() {
[INFO] [stdout] 28 | |             Ok(Async::Ready(x)) => Ok(Async::Ready(x)),
[INFO] [stdout] 29 | |             Ok(Async::NotReady) => Ok(Async::NotReady),
[INFO] [stdout] 30 | |             Err(e) => panic::resume_unwind(e),
[INFO] [stdout] 31 | |         }
[INFO] [stdout]    | |_________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Async<<F as futures::Future>::Item>, Void>
[INFO] [stdout]   --> src/resume_unwind.rs:28:36
[INFO] [stdout]    |
[INFO] [stdout] 28 |             Ok(Async::Ready(x)) => Ok(Async::Ready(x)),
[INFO] [stdout]    |                                    ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Async<<F as futures::Future>::Item>, Void>
[INFO] [stdout]   --> src/resume_unwind.rs:29:36
[INFO] [stdout]    |
[INFO] [stdout] 29 |             Ok(Async::NotReady) => Ok(Async::NotReady),
[INFO] [stdout]    |                                    ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Async<()>, Void>
[INFO] [stdout]   --> src/with_readiness_timeout.rs:33:23
[INFO] [stdout]    |
[INFO] [stdout] 33 |                 match self.delay.poll().void_unwrap() {
[INFO] [stdout]    |                       ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Async<Option<T>>, Void>
[INFO] [stdout]   --> src/bi_channel.rs:35:58
[INFO] [stdout]    |
[INFO] [stdout] 35 |       fn poll(&mut self) -> Result<Async<Option<T>>, Void> {
[INFO] [stdout]    |  __________________________________________________________^
[INFO] [stdout] 36 | |         self.rx.poll()
[INFO] [stdout] 37 | |     }
[INFO] [stdout]    | |_____^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Async<Option<T>>, Void>
[INFO] [stdout]   --> src/bi_channel.rs:36:9
[INFO] [stdout]    |
[INFO] [stdout] 36 |         self.rx.poll()
[INFO] [stdout]    |         ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Async<Option<T>>, Void>
[INFO] [stdout]   --> src/mpsc.rs:23:58
[INFO] [stdout]    |
[INFO] [stdout] 23 |       fn poll(&mut self) -> Result<Async<Option<T>>, Void> {
[INFO] [stdout]    |  __________________________________________________________^
[INFO] [stdout] 24 | |         Ok(unwrap!(self.inner.poll()))
[INFO] [stdout] 25 | |     }
[INFO] [stdout]    | |_____^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Async<Option<T>>, Void>
[INFO] [stdout]   --> src/mpsc.rs:24:9
[INFO] [stdout]    |
[INFO] [stdout] 24 |         Ok(unwrap!(self.inner.poll()))
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `future-utils` (lib test) due to 37 previous errors; 11 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "0461b57767c8c1cdcc3be9ec5df3ee56e51abb823393520e39f29c8d5b8b11f4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0461b57767c8c1cdcc3be9ec5df3ee56e51abb823393520e39f29c8d5b8b11f4", kill_on_drop: false }`
[INFO] [stdout] 0461b57767c8c1cdcc3be9ec5df3ee56e51abb823393520e39f29c8d5b8b11f4
