[INFO] fetching crate xwebtransport-core 0.2.0...
[INFO] checking xwebtransport-core-0.2.0 against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] extracting crate xwebtransport-core 0.2.0 into /workspace/builds/worker-0-tc2/source
[INFO] started tweaking crates.io crate xwebtransport-core 0.2.0
[INFO] finished tweaking crates.io crate xwebtransport-core 0.2.0
[INFO] tweaked toml for crates.io crate xwebtransport-core 0.2.0 written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate xwebtransport-core 0.2.0 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 7 packages to latest compatible versions
[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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] 1e3d0a24cc6bdf90f9741a68db1c7e2debb9c70e811d8c9ccfed349b65ce7293
[INFO] running `Command { std: "docker" "start" "-a" "1e3d0a24cc6bdf90f9741a68db1c7e2debb9c70e811d8c9ccfed349b65ce7293", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1e3d0a24cc6bdf90f9741a68db1c7e2debb9c70e811d8c9ccfed349b65ce7293", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1e3d0a24cc6bdf90f9741a68db1c7e2debb9c70e811d8c9ccfed349b65ce7293", kill_on_drop: false }`
[INFO] [stdout] 1e3d0a24cc6bdf90f9741a68db1c7e2debb9c70e811d8c9ccfed349b65ce7293
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] c8381db259dfe533c771968de3fe37c21fa59c3689daac827db97bcbda8adf81
[INFO] running `Command { std: "docker" "start" "-a" "c8381db259dfe533c771968de3fe37c21fa59c3689daac827db97bcbda8adf81", kill_on_drop: false }`
[INFO] [stderr]     Checking tokio v1.48.0
[INFO] [stderr]    Compiling syn v2.0.110
[INFO] [stderr]    Compiling async-trait v0.1.89
[INFO] [stderr]     Checking xwebtransport-core v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: this type will no longer be must used: Result<<T as traits::Streams>::SendStream, Infallible>
[INFO] [stdout]   --> src/utils/dummy.rs:36:5
[INFO] [stdout]    |
[INFO] [stdout] 36 |     async fn wait_uni(self) -> Result<<T as Streams>::SendStream, Self::Error> {
[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<<T as traits::Streams>::SendStream, Infallible>
[INFO] [stdout]   --> src/utils/dummy.rs:27:41
[INFO] [stdout]    |
[INFO] [stdout] 27 | #[cfg_attr(not(target_family = "wasm"), async_trait)]
[INFO] [stdout]    |                                         ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this error originates in the attribute macro `async_trait` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<<T as traits::Streams>::SendStream, Infallible>
[INFO] [stdout]   --> src/utils/dummy.rs:36:80
[INFO] [stdout]    |
[INFO] [stdout] 36 |       async fn wait_uni(self) -> Result<<T as Streams>::SendStream, Self::Error> {
[INFO] [stdout]    |  ________________________________________________________________________________^
[INFO] [stdout] 37 | |         Ok(self.0)
[INFO] [stdout] 38 | |     }
[INFO] [stdout]    | |_____^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<<T as traits::Streams>::SendStream, Infallible>
[INFO] [stdout]   --> src/utils/dummy.rs:37:9
[INFO] [stdout]    |
[INFO] [stdout] 37 |         Ok(self.0)
[INFO] [stdout]    |         ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<(<T as traits::Streams>::SendStream, <T as traits::Streams>::RecvStream), Infallible>
[INFO] [stdout]   --> src/utils/dummy.rs:53:5
[INFO] [stdout]    |
[INFO] [stdout] 53 |     async fn wait_bi(self) -> Result<crate::traits::BiStreamsFor<T>, Self::Error> {
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<(<T as traits::Streams>::SendStream, <T as traits::Streams>::RecvStream), Infallible>
[INFO] [stdout]   --> src/utils/dummy.rs:44:41
[INFO] [stdout]    |
[INFO] [stdout] 44 | #[cfg_attr(not(target_family = "wasm"), async_trait)]
[INFO] [stdout]    |                                         ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this error originates in the attribute macro `async_trait` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<(<T as traits::Streams>::SendStream, <T as traits::Streams>::RecvStream), Infallible>
[INFO] [stdout]   --> src/utils/dummy.rs:53:83
[INFO] [stdout]    |
[INFO] [stdout] 53 |       async fn wait_bi(self) -> Result<crate::traits::BiStreamsFor<T>, Self::Error> {
[INFO] [stdout]    |  ___________________________________________________________________________________^
[INFO] [stdout] 54 | |         Ok(self.0)
[INFO] [stdout] 55 | |     }
[INFO] [stdout]    | |_____^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<(<T as traits::Streams>::SendStream, <T as traits::Streams>::RecvStream), Infallible>
[INFO] [stdout]   --> src/utils/dummy.rs:54:9
[INFO] [stdout]    |
[INFO] [stdout] 54 |         Ok(self.0)
[INFO] [stdout]    |         ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<<T as traits::Streams>::SendStream, Infallible>
[INFO] [stdout]   --> src/utils/dummy.rs:36:5
[INFO] [stdout]    |
[INFO] [stdout] 36 |     async fn wait_uni(self) -> Result<<T as Streams>::SendStream, Self::Error> {
[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<<T as traits::Streams>::SendStream, Infallible>
[INFO] [stdout]   --> src/utils/dummy.rs:27:41
[INFO] [stdout]    |
[INFO] [stdout] 27 | #[cfg_attr(not(target_family = "wasm"), async_trait)]
[INFO] [stdout]    |                                         ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this error originates in the attribute macro `async_trait` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<<T as traits::Streams>::SendStream, Infallible>
[INFO] [stdout]   --> src/utils/dummy.rs:36:80
[INFO] [stdout]    |
[INFO] [stdout] 36 |       async fn wait_uni(self) -> Result<<T as Streams>::SendStream, Self::Error> {
[INFO] [stdout]    |  ________________________________________________________________________________^
[INFO] [stdout] 37 | |         Ok(self.0)
[INFO] [stdout] 38 | |     }
[INFO] [stdout]    | |_____^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<<T as traits::Streams>::SendStream, Infallible>
[INFO] [stdout]   --> src/utils/dummy.rs:37:9
[INFO] [stdout]    |
[INFO] [stdout] 37 |         Ok(self.0)
[INFO] [stdout]    |         ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<(<T as traits::Streams>::SendStream, <T as traits::Streams>::RecvStream), Infallible>
[INFO] [stdout]   --> src/utils/dummy.rs:53:5
[INFO] [stdout]    |
[INFO] [stdout] 53 |     async fn wait_bi(self) -> Result<crate::traits::BiStreamsFor<T>, Self::Error> {
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<(<T as traits::Streams>::SendStream, <T as traits::Streams>::RecvStream), Infallible>
[INFO] [stdout]   --> src/utils/dummy.rs:44:41
[INFO] [stdout]    |
[INFO] [stdout] 44 | #[cfg_attr(not(target_family = "wasm"), async_trait)]
[INFO] [stdout]    |                                         ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this error originates in the attribute macro `async_trait` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<(<T as traits::Streams>::SendStream, <T as traits::Streams>::RecvStream), Infallible>
[INFO] [stdout]   --> src/utils/dummy.rs:53:83
[INFO] [stdout]    |
[INFO] [stdout] 53 |       async fn wait_bi(self) -> Result<crate::traits::BiStreamsFor<T>, Self::Error> {
[INFO] [stdout]    |  ___________________________________________________________________________________^
[INFO] [stdout] 54 | |         Ok(self.0)
[INFO] [stdout] 55 | |     }
[INFO] [stdout]    | |_____^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<(<T as traits::Streams>::SendStream, <T as traits::Streams>::RecvStream), Infallible>
[INFO] [stdout]   --> src/utils/dummy.rs:54:9
[INFO] [stdout]    |
[INFO] [stdout] 54 |         Ok(self.0)
[INFO] [stdout]    |         ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `xwebtransport-core` (lib) due to 8 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: could not compile `xwebtransport-core` (lib test) due to 8 previous errors
[INFO] running `Command { std: "docker" "inspect" "c8381db259dfe533c771968de3fe37c21fa59c3689daac827db97bcbda8adf81", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c8381db259dfe533c771968de3fe37c21fa59c3689daac827db97bcbda8adf81", kill_on_drop: false }`
[INFO] [stdout] c8381db259dfe533c771968de3fe37c21fa59c3689daac827db97bcbda8adf81