[INFO] fetching crate tokio-utp 0.3.0...
[INFO] checking tokio-utp-0.3.0 against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] extracting crate tokio-utp 0.3.0 into /workspace/builds/worker-4-tc2/source
[INFO] started tweaking crates.io crate tokio-utp 0.3.0
[INFO] finished tweaking crates.io crate tokio-utp 0.3.0
[INFO] tweaked toml for crates.io crate tokio-utp 0.3.0 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate tokio-utp 0.3.0 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 77 packages to latest compatible versions
[INFO] [stderr]       Adding bytes v0.4.12 (available: v1.10.1)
[INFO] [stderr]       Adding env_logger v0.4.3 (available: v0.11.8)
[INFO] [stderr]       Adding future-utils v0.6.0 (available: v0.12.1)
[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 mio v0.6.23 (available: v1.1.0)
[INFO] [stderr]       Adding rand v0.3.23 (available: v0.9.2)
[INFO] [stderr]       Adding smallvec v0.4.5 (available: v1.15.1)
[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-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] 90e3ba81fd22dd4d9e90de8f1821b59c538f14a47da0dc5784ea89c627ec106f
[INFO] running `Command { std: "docker" "start" "-a" "90e3ba81fd22dd4d9e90de8f1821b59c538f14a47da0dc5784ea89c627ec106f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "90e3ba81fd22dd4d9e90de8f1821b59c538f14a47da0dc5784ea89c627ec106f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "90e3ba81fd22dd4d9e90de8f1821b59c538f14a47da0dc5784ea89c627ec106f", kill_on_drop: false }`
[INFO] [stdout] 90e3ba81fd22dd4d9e90de8f1821b59c538f14a47da0dc5784ea89c627ec106f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] 7befdb24670570f498e6b5861157b8f919f74f29d9634be4fa1bebb5df53eede
[INFO] running `Command { std: "docker" "start" "-a" "7befdb24670570f498e6b5861157b8f919f74f29d9634be4fa1bebb5df53eede", kill_on_drop: false }`
[INFO] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2024
[INFO] [stderr]     Checking scoped-tls v0.1.2
[INFO] [stderr]    Compiling regex v0.2.11
[INFO] [stderr]     Checking ucd-util v0.1.10
[INFO] [stderr]     Checking aho-corasick v0.6.10
[INFO] [stderr]     Checking thread_local v0.3.6
[INFO] [stderr]     Checking utf8-ranges v1.0.5
[INFO] [stderr]     Checking unwrap v1.2.1
[INFO] [stderr]     Checking smallvec v0.4.5
[INFO] [stderr]     Checking mio v0.6.23
[INFO] [stderr]     Checking tokio-io v0.1.13
[INFO] [stderr]     Checking tokio-threadpool v0.1.18
[INFO] [stderr]     Checking regex-syntax v0.5.6
[INFO] [stderr]     Checking tokio-codec v0.1.2
[INFO] [stderr]     Checking tokio-fs v0.1.7
[INFO] [stderr]     Checking tokio-reactor v0.1.12
[INFO] [stderr]     Checking mio-uds v0.6.8
[INFO] [stderr]     Checking tokio-tcp v0.1.4
[INFO] [stderr]     Checking tokio-udp v0.1.6
[INFO] [stderr]     Checking tokio-uds v0.2.7
[INFO] [stderr]     Checking tokio v0.1.22
[INFO] [stderr]     Checking tokio-core v0.1.18
[INFO] [stderr]     Checking future-utils v0.6.0
[INFO] [stderr]     Checking tokio-utp v0.3.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/out_queue.rs:268:17
[INFO] [stdout]     |
[INFO] [stdout] 268 |     pub fn next(&mut self) -> Option<Next> {
[INFO] [stdout]     |                 ^^^^^^^^^            ^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                 |
[INFO] [stdout]     |                 the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]     = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 268 |     pub fn next(&mut self) -> Option<Next<'_>> {
[INFO] [stdout]     |                                          ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Async<Option<RawChannel>>, Void>
[INFO] [stdout]    --> src/socket.rs:331:67
[INFO] [stdout]     |
[INFO] [stdout] 331 |       fn poll(&mut self) -> Result<Async<Option<RawChannel>>, Void> {
[INFO] [stdout]     |  ___________________________________________________________________^
[INFO] [stdout] 332 | |         self.channel_rx.poll()
[INFO] [stdout] 333 | |     }
[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<Option<RawChannel>>, Void>
[INFO] [stdout]    --> src/socket.rs:332:9
[INFO] [stdout]     |
[INFO] [stdout] 332 |         self.channel_rx.poll()
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Async<Option<BytesMut>>, Void>
[INFO] [stdout]    --> src/socket.rs:409:65
[INFO] [stdout]     |
[INFO] [stdout] 409 |       fn poll(&mut self) -> Result<Async<Option<BytesMut>>, Void> {
[INFO] [stdout]     |  _________________________________________________________________^
[INFO] [stdout] 410 | |         let ret = self.bytes_rx.poll();
[INFO] [stdout] 411 | |         if let Ok(Async::Ready(Some(ref bytes))) = ret {
[INFO] [stdout] 412 | |             let mut inner = unwrap!(self.inner.write());
[INFO] [stdout] ...   |
[INFO] [stdout] 415 | |         ret
[INFO] [stdout] 416 | |     }
[INFO] [stdout]     | |_____^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Async<Option<BytesMut>>, Void>
[INFO] [stdout]    --> src/socket.rs:410:19
[INFO] [stdout]     |
[INFO] [stdout] 410 |         let ret = self.bytes_rx.poll();
[INFO] [stdout]     |                   ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Async<Option<BytesMut>>, Void>
[INFO] [stdout]    --> src/socket.rs:411:52
[INFO] [stdout]     |
[INFO] [stdout] 411 |         if let Ok(Async::Ready(Some(ref bytes))) = ret {
[INFO] [stdout]     |                                                    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Async<Option<BytesMut>>, Void>
[INFO] [stdout]    --> src/socket.rs:415:9
[INFO] [stdout]     |
[INFO] [stdout] 415 |         ret
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `std::mem::replace` that must be used
[INFO] [stdout]     --> src/socket.rs:1566:25
[INFO] [stdout]      |
[INFO] [stdout] 1566 |                         mem::replace(&mut self.state, UtpStreamConnectState::Waiting(stream));
[INFO] [stdout]      |                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = note: if you don't need the old value, you can just assign the new value directly
[INFO] [stdout]      = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]      |
[INFO] [stdout] 1566 |                         let _ = mem::replace(&mut self.state, UtpStreamConnectState::Waiting(stream));
[INFO] [stdout]      |                         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Async<()>, Void>
[INFO] [stdout]     --> src/socket.rs:1632:51
[INFO] [stdout]      |
[INFO] [stdout] 1632 |       fn poll(&mut self) -> Result<Async<()>, Void> {
[INFO] [stdout]      |  ___________________________________________________^
[INFO] [stdout] 1633 | |         if let Async::Ready(()) = unwrap!(self.resp_finalize.poll()) {
[INFO] [stdout] 1634 | |             return Ok(Async::Ready(()));
[INFO] [stdout] ...    |
[INFO] [stdout] 1637 | |     }
[INFO] [stdout]      | |_____^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Async<()>, Void>
[INFO] [stdout]     --> src/socket.rs:1634:20
[INFO] [stdout]      |
[INFO] [stdout] 1634 |             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/socket.rs:1636:9
[INFO] [stdout]      |
[INFO] [stdout] 1636 |         Ok(Async::NotReady)
[INFO] [stdout]      |         ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `tokio-utp` (lib) due to 9 previous errors; 2 warnings emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "7befdb24670570f498e6b5861157b8f919f74f29d9634be4fa1bebb5df53eede", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7befdb24670570f498e6b5861157b8f919f74f29d9634be4fa1bebb5df53eede", kill_on_drop: false }`
[INFO] [stdout] 7befdb24670570f498e6b5861157b8f919f74f29d9634be4fa1bebb5df53eede
