[INFO] fetching crate synchrotron 0.1.0...
[INFO] checking synchrotron-0.1.0 against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] extracting crate synchrotron 0.1.0 into /workspace/builds/worker-3-tc2/source
[INFO] started tweaking crates.io crate synchrotron 0.1.0
[INFO] finished tweaking crates.io crate synchrotron 0.1.0
[INFO] tweaked toml for crates.io crate synchrotron 0.1.0 written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate synchrotron 0.1.0 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 61 packages to latest compatible versions
[INFO] [stderr]       Adding futures v0.1.31 (available: v0.3.31)
[INFO] [stderr]       Adding vec-arena v0.1.1 (available: v1.2.0)
[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] 2f7af012332967098464cd1f2475cfd7d7078b4e47c6a88ea9fb99ce69e47d13
[INFO] running `Command { std: "docker" "start" "-a" "2f7af012332967098464cd1f2475cfd7d7078b4e47c6a88ea9fb99ce69e47d13", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2f7af012332967098464cd1f2475cfd7d7078b4e47c6a88ea9fb99ce69e47d13", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2f7af012332967098464cd1f2475cfd7d7078b4e47c6a88ea9fb99ce69e47d13", kill_on_drop: false }`
[INFO] [stdout] 2f7af012332967098464cd1f2475cfd7d7078b4e47c6a88ea9fb99ce69e47d13
[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] fc8239f9570257cc49b375c21b302c381ac6b5d8e3f188a7335aecad5c77ae94
[INFO] running `Command { std: "docker" "start" "-a" "fc8239f9570257cc49b375c21b302c381ac6b5d8e3f188a7335aecad5c77ae94", kill_on_drop: false }`
[INFO] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2024
[INFO] [stderr]     Checking log v0.4.28
[INFO] [stderr]     Checking void v1.0.2
[INFO] [stderr]     Checking index_queue v0.1.0
[INFO] [stderr]     Checking vec-arena v0.1.1
[INFO] [stderr]     Checking tokio-io v0.1.13
[INFO] [stderr]     Checking mio v0.6.23
[INFO] [stderr]     Checking tokio-threadpool v0.1.18
[INFO] [stderr]     Checking synchrotron v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: use of deprecated trait `futures::task::Unpark`: recommended to use `Notify` instead
[INFO] [stdout]   --> src/lib.rs:15:38
[INFO] [stdout]    |
[INFO] [stdout] 15 | use futures::executor::{self, Spawn, Unpark};
[INFO] [stdout]    |                                      ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated trait `futures::task::Unpark`: recommended to use `Notify` instead
[INFO] [stdout]   --> src/lib.rs:94:6
[INFO] [stdout]    |
[INFO] [stdout] 94 | impl Unpark for Ticket {
[INFO] [stdout]    |      ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated function `futures::task::park`: renamed to `current`
[INFO] [stdout]    --> src/lib.rs:177:15
[INFO] [stdout]     |
[INFO] [stdout] 177 |         task::park().unpark();
[INFO] [stdout]     |               ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib.rs:116:35
[INFO] [stdout]     |
[INFO] [stdout] 116 | type SpawnedBox<'a> = Spawned<Box<Future<Item=(), Error=Void> + 'a>>;
[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] 116 | type SpawnedBox<'a> = Spawned<Box<dyn Future<Item=(), Error=Void> + 'a>>;
[INFO] [stdout]     |                                   +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `futures::task::Unpark::unpark`: recommended to use `Notify` instead
[INFO] [stdout]    --> src/lib.rs:130:16
[INFO] [stdout]     |
[INFO] [stdout] 130 |         ticket.unpark();
[INFO] [stdout]     |                ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `futures::task::Task::unpark`: renamed to `notify`
[INFO] [stdout]    --> src/lib.rs:177:22
[INFO] [stdout]     |
[INFO] [stdout] 177 |         task::park().unpark();
[INFO] [stdout]     |                      ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `futures::task_impl::std::<impl futures::task::Spawn<F>>::poll_future`: recommended to use `poll_future_notify` instead
[INFO] [stdout]    --> src/lib.rs:291:47
[INFO] [stdout]     |
[INFO] [stdout] 291 |                         let poll = main.spawn.poll_future(ticket);
[INFO] [stdout]     |                                               ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `futures::task_impl::std::<impl futures::task::Spawn<F>>::poll_future`: recommended to use `poll_future_notify` instead
[INFO] [stdout]    --> src/lib.rs:304:46
[INFO] [stdout]     |
[INFO] [stdout] 304 |                     let poll = spawned.spawn.poll_future(ticket);
[INFO] [stdout]     |                                              ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Async<()>, Void>
[INFO] [stdout]    --> src/lib.rs:304:32
[INFO] [stdout]     |
[INFO] [stdout] 304 |                     let poll = spawned.spawn.poll_future(ticket);
[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/lib.rs:306:51
[INFO] [stdout]     |
[INFO] [stdout] 306 |                     if let Ok(Async::Ready(())) = poll {
[INFO] [stdout]     |                                                   ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Async<()>, Void>
[INFO] [stdout]    --> src/lib.rs:324:57
[INFO] [stdout]     |
[INFO] [stdout] 324 |       fn poll(&mut self) -> Poll<Self::Item, Self::Error> {
[INFO] [stdout]     |  _________________________________________________________^
[INFO] [stdout] 325 | |         yield_turn(self.turn())
[INFO] [stdout] 326 | |     }
[INFO] [stdout]     | |_____^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Async<()>, Void>
[INFO] [stdout]    --> src/lib.rs:325:9
[INFO] [stdout]     |
[INFO] [stdout] 325 |         yield_turn(self.turn())
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `synchrotron` (lib) due to 4 previous errors; 8 warnings emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "fc8239f9570257cc49b375c21b302c381ac6b5d8e3f188a7335aecad5c77ae94", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fc8239f9570257cc49b375c21b302c381ac6b5d8e3f188a7335aecad5c77ae94", kill_on_drop: false }`
[INFO] [stdout] fc8239f9570257cc49b375c21b302c381ac6b5d8e3f188a7335aecad5c77ae94
