[INFO] fetching crate websocket-util 0.14.0...
[INFO] checking websocket-util-0.14.0 against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] extracting crate websocket-util 0.14.0 into /workspace/builds/worker-0-tc2/source
[INFO] started tweaking crates.io crate websocket-util 0.14.0
[INFO] finished tweaking crates.io crate websocket-util 0.14.0
[INFO] tweaked toml for crates.io crate websocket-util 0.14.0 written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate websocket-util 0.14.0 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 121 packages to latest compatible versions
[INFO] [stderr]       Adding generic-array v0.14.7 (available: v0.14.9)
[INFO] [stderr]       Adding rand v0.8.5 (available: v0.9.2)
[INFO] [stderr]       Adding tokio-tungstenite v0.26.2 (available: v0.28.0)
[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] 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] 8f4680e8f981cd4e80b188e2dca121f32f9dd795cd8dfca991f6d8d6dd2b513e
[INFO] running `Command { std: "docker" "start" "-a" "8f4680e8f981cd4e80b188e2dca121f32f9dd795cd8dfca991f6d8d6dd2b513e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8f4680e8f981cd4e80b188e2dca121f32f9dd795cd8dfca991f6d8d6dd2b513e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8f4680e8f981cd4e80b188e2dca121f32f9dd795cd8dfca991f6d8d6dd2b513e", kill_on_drop: false }`
[INFO] [stdout] 8f4680e8f981cd4e80b188e2dca121f32f9dd795cd8dfca991f6d8d6dd2b513e
[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] 6a5e91537657467417e97045ad97eed3744572ee81aec7ca8ac0672b90f64dc5
[INFO] running `Command { std: "docker" "start" "-a" "6a5e91537657467417e97045ad97eed3744572ee81aec7ca8ac0672b90f64dc5", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v2.0.110
[INFO] [stderr]    Compiling libc v0.2.177
[INFO] [stderr]    Compiling getrandom v0.3.4
[INFO] [stderr]     Checking generic-array v0.14.7
[INFO] [stderr]     Checking futures-core v0.3.31
[INFO] [stderr]    Compiling thiserror v2.0.17
[INFO] [stderr]     Checking percent-encoding v2.3.2
[INFO] [stderr]     Checking futures-sink v0.3.31
[INFO] [stderr]     Checking regex-syntax v0.8.8
[INFO] [stderr]     Checking futures-channel v0.3.31
[INFO] [stderr]     Checking form_urlencoded v1.2.2
[INFO] [stderr]     Checking powerfmt v0.2.0
[INFO] [stderr]     Checking http v1.3.1
[INFO] [stderr]     Checking tracing v0.1.41
[INFO] [stderr]     Checking deranged v0.5.5
[INFO] [stderr]     Checking time-core v0.1.6
[INFO] [stderr]     Checking num-conv v0.1.0
[INFO] [stderr]     Checking num_threads v0.1.7
[INFO] [stderr]     Checking block-buffer v0.10.4
[INFO] [stderr]     Checking crypto-common v0.1.7
[INFO] [stderr]     Checking data-encoding v2.9.0
[INFO] [stderr]     Checking sharded-slab v0.1.7
[INFO] [stderr]     Checking digest v0.10.7
[INFO] [stderr]     Checking regex-automata v0.4.13
[INFO] [stderr]     Checking sha1 v0.10.6
[INFO] [stderr]     Checking thread_local v1.1.9
[INFO] [stderr]     Checking nu-ansi-term v0.50.3
[INFO] [stderr]     Checking mio v1.1.0
[INFO] [stderr]     Checking getrandom v0.2.16
[INFO] [stderr]     Checking socket2 v0.6.1
[INFO] [stderr]     Checking rand_core v0.6.4
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[INFO] [stderr]     Checking rand_chacha v0.3.1
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[INFO] [stderr]     Checking matchers v0.2.0
[INFO] [stderr]     Checking tracing-subscriber v0.3.20
[INFO] [stderr]    Compiling synstructure v0.13.2
[INFO] [stderr]    Compiling zerofrom-derive v0.1.6
[INFO] [stderr]    Compiling yoke-derive v0.8.1
[INFO] [stderr]    Compiling zerovec-derive v0.11.2
[INFO] [stderr]    Compiling displaydoc v0.2.5
[INFO] [stderr]    Compiling serde_derive v1.0.228
[INFO] [stderr]    Compiling thiserror-impl v2.0.17
[INFO] [stderr]    Compiling futures-macro v0.3.31
[INFO] [stderr]    Compiling tokio-macros v2.6.0
[INFO] [stderr]     Checking tokio v1.48.0
[INFO] [stderr]    Compiling test-log-macros v0.2.18
[INFO] [stderr]     Checking futures-util v0.3.31
[INFO] [stderr]     Checking test-log v0.2.18
[INFO] [stderr]     Checking zerofrom v0.1.6
[INFO] [stderr]     Checking yoke v0.8.1
[INFO] [stderr]     Checking zerovec v0.11.5
[INFO] [stderr]     Checking zerotrie v0.2.3
[INFO] [stderr]     Checking tinystr v0.8.2
[INFO] [stderr]     Checking potential_utf v0.1.4
[INFO] [stderr]     Checking icu_collections v2.1.1
[INFO] [stderr]     Checking icu_locale_core v2.1.1
[INFO] [stderr]     Checking serde v1.0.228
[INFO] [stderr]     Checking icu_provider v2.1.1
[INFO] [stderr]     Checking icu_normalizer v2.1.1
[INFO] [stderr]     Checking icu_properties v2.1.1
[INFO] [stderr]     Checking idna_adapter v1.2.1
[INFO] [stderr]     Checking idna v1.1.0
[INFO] [stderr]     Checking futures v0.3.31
[INFO] [stderr]     Checking url v2.5.7
[INFO] [stderr]     Checking tungstenite v0.26.2
[INFO] [stderr]     Checking tokio-tungstenite v0.26.2
[INFO] [stderr]     Checking websocket-util v0.14.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: this type will no longer be must used: Result<Option<Result<<M as subscribe::Message>::ControlMessage, ()>>, Infallible>
[INFO] [stdout]    --> src/subscribe.rs:274:18
[INFO] [stdout]     |
[INFO] [stdout] 274 |     let result = self.with_channel(|_sink| async { Ok(()) }).await;
[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<Option<Result<<M as subscribe::Message>::ControlMessage, ()>>, Infallible>
[INFO] [stdout]    --> src/subscribe.rs:274:62
[INFO] [stdout]     |
[INFO] [stdout] 274 |     let result = self.with_channel(|_sink| async { Ok(()) }).await;
[INFO] [stdout]     |                                                              ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Option<Result<<M as subscribe::Message>::ControlMessage, ()>>, Infallible>
[INFO] [stdout]    --> src/subscribe.rs:274:18
[INFO] [stdout]     |
[INFO] [stdout] 274 |     let result = self.with_channel(|_sink| async { Ok(()) }).await;
[INFO] [stdout]     |                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Option<Result<<M as subscribe::Message>::ControlMessage, ()>>, Infallible>
[INFO] [stdout]    --> src/subscribe.rs:278:37
[INFO] [stdout]     |
[INFO] [stdout] 278 |     Result::<_, Infallible>::unwrap(result)
[INFO] [stdout]     |                                     ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `websocket-util` (lib) due to 4 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error: this type will no longer be must used: Result<Option<Result<<M as subscribe::Message>::ControlMessage, ()>>, Infallible>
[INFO] [stdout]    --> src/subscribe.rs:274:18
[INFO] [stdout]     |
[INFO] [stdout] 274 |     let result = self.with_channel(|_sink| async { Ok(()) }).await;
[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<Option<Result<<M as subscribe::Message>::ControlMessage, ()>>, Infallible>
[INFO] [stdout]    --> src/subscribe.rs:274:62
[INFO] [stdout]     |
[INFO] [stdout] 274 |     let result = self.with_channel(|_sink| async { Ok(()) }).await;
[INFO] [stdout]     |                                                              ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Option<Result<<M as subscribe::Message>::ControlMessage, ()>>, Infallible>
[INFO] [stdout]    --> src/subscribe.rs:274:18
[INFO] [stdout]     |
[INFO] [stdout] 274 |     let result = self.with_channel(|_sink| async { Ok(()) }).await;
[INFO] [stdout]     |                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Option<Result<<M as subscribe::Message>::ControlMessage, ()>>, Infallible>
[INFO] [stdout]    --> src/subscribe.rs:278:37
[INFO] [stdout]     |
[INFO] [stdout] 278 |     Result::<_, Infallible>::unwrap(result)
[INFO] [stdout]     |                                     ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `websocket-util` (lib test) due to 4 previous errors
[INFO] running `Command { std: "docker" "inspect" "6a5e91537657467417e97045ad97eed3744572ee81aec7ca8ac0672b90f64dc5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6a5e91537657467417e97045ad97eed3744572ee81aec7ca8ac0672b90f64dc5", kill_on_drop: false }`
[INFO] [stdout] 6a5e91537657467417e97045ad97eed3744572ee81aec7ca8ac0672b90f64dc5