[INFO] cloning repository https://github.com/pfernie/ws-sample
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/pfernie/ws-sample" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpfernie%2Fws-sample", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpfernie%2Fws-sample'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 76702141689fe8595113e090fc2caa2c725ae105
[INFO] checking pfernie/ws-sample against try#1bdcb63291ccffc030f8223f6f978568dd240e3e for 155501-infallible-never-with-reservation
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpfernie%2Fws-sample" "/workspace/builds/worker-3-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/pfernie/ws-sample
[INFO] finished tweaking git repo https://github.com/pfernie/ws-sample
[INFO] tweaked toml for git repo https://github.com/pfernie/ws-sample written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/pfernie/ws-sample on toolchain 1bdcb63291ccffc030f8223f6f978568dd240e3e
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1bdcb63291ccffc030f8223f6f978568dd240e3e" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/pfernie/ws-sample already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1bdcb63291ccffc030f8223f6f978568dd240e3e" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+1bdcb63291ccffc030f8223f6f978568dd240e3e" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f7d9b955fb92d5c2c7cd76786d583685202daddc10a29b2db7999fdc93359efe
[INFO] running `Command { std: "docker" "start" "-a" "f7d9b955fb92d5c2c7cd76786d583685202daddc10a29b2db7999fdc93359efe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f7d9b955fb92d5c2c7cd76786d583685202daddc10a29b2db7999fdc93359efe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f7d9b955fb92d5c2c7cd76786d583685202daddc10a29b2db7999fdc93359efe", kill_on_drop: false }`
[INFO] [stdout] f7d9b955fb92d5c2c7cd76786d583685202daddc10a29b2db7999fdc93359efe
[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" "-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+1bdcb63291ccffc030f8223f6f978568dd240e3e" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5652ba735874fb3d5958042538adab970105ed850d79d15be87b8630aa2bdb97
[INFO] running `Command { std: "docker" "start" "-a" "5652ba735874fb3d5958042538adab970105ed850d79d15be87b8630aa2bdb97", kill_on_drop: false }`
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[INFO] [stdout] error[E0277]: the trait bound `!: From<()>` is not satisfied
[INFO] [stdout]     --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/warp-0.1.16/src/test.rs:493:30
[INFO] [stdout]      |
[INFO] [stdout]  493 |                     .forward(tx.sink_map_err(|_| ()))
[INFO] [stdout]      |                      ------- ^^^^^^^^^^^^^^^^^^^^^^^ the trait `From<()>` is not implemented for `!`
[INFO] [stdout]      |                      |
[INFO] [stdout]      |                      required by a bound introduced by this call
[INFO] [stdout]      |
[INFO] [stdout]      = note: this error might have been caused by changes to Rust's type-inference algorithm (see issue #148922 <https://github.com/rust-lang/rust/issues/148922> for more information)
[INFO] [stdout]      = help: you might have intended to use the type `()` here instead
[INFO] [stdout] note: the method call chain might not have had the expected associated types
[INFO] [stdout]     --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/warp-0.1.16/src/test.rs:493:33
[INFO] [stdout]      |
[INFO] [stdout]  493 |                     .forward(tx.sink_map_err(|_| ()))
[INFO] [stdout]      |                              -- ^^^^^^^^^^^^^^^^^^^^ `Sink::SinkError` is `()` here
[INFO] [stdout]      |                              |
[INFO] [stdout]      |                              this expression has type `SplitSink<WebSocket>`
[INFO] [stdout] note: required by a bound in `futures::Stream::forward`
[INFO] [stdout]     --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/futures-0.1.27/src/stream/mod.rs:1067:28
[INFO] [stdout]      |
[INFO] [stdout] 1065 |     fn forward<S>(self, sink: S) -> Forward<Self, S>
[INFO] [stdout]      |        ------- required by a bound in this associated function
[INFO] [stdout] 1066 |         where S: Sink<SinkItem = Self::Item>,
[INFO] [stdout] 1067 |               Self::Error: From<S::SinkError>,
[INFO] [stdout]      |                            ^^^^^^^^^^^^^^^^^^ required by this bound in `Stream::forward`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the trait bound `!: From<()>` is not satisfied
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/warp-0.1.16/src/test.rs:489:29
[INFO] [stdout]     |
[INFO] [stdout] 489 |                   let write = wr_rx
[INFO] [stdout]     |  _____________________________^
[INFO] [stdout] 490 | |                     .map_err(|()| {
[INFO] [stdout] 491 | |                         unreachable!("mpsc::Receiver doesn't error");
[INFO] [stdout] 492 | |                     })
[INFO] [stdout] 493 | |                     .forward(tx.sink_map_err(|_| ()))
[INFO] [stdout] 494 | |                     .map(|_| ());
[INFO] [stdout]     | |________________________________^ the trait `From<()>` is not implemented for `!`
[INFO] [stdout]     |
[INFO] [stdout] help: the trait `futures::Future` is implemented for `Forward<T, U>`
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/futures-0.1.27/src/stream/forward.rs:78:1
[INFO] [stdout]     |
[INFO] [stdout]  78 | / impl<T, U> Future for Forward<T, U>
[INFO] [stdout]  79 | |     where U: Sink<SinkItem=T::Item>,
[INFO] [stdout]  80 | |           T: Stream,
[INFO] [stdout]  81 | |           T::Error: From<U::SinkError>,
[INFO] [stdout]     | |_______________________________________^
[INFO] [stdout]     = note: this error might have been caused by changes to Rust's type-inference algorithm (see issue #148922 <https://github.com/rust-lang/rust/issues/148922> for more information)
[INFO] [stdout]     = help: you might have intended to use the type `()` here instead
[INFO] [stdout]     = note: required for `Forward<MapErr<UnboundedReceiver<Message>, {closure@...}>, ...>` to implement `futures::Future`
[INFO] [stdout]     = note: the full name for the type has been written to '/opt/rustwide/target/debug/deps/warp-3eb832e9cd1e8afd.long-type-3146564062875491922.txt'
[INFO] [stdout]     = note: consider using `--verbose` to print the full type name to the console
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the trait bound `!: From<()>` is not satisfied
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/warp-0.1.16/src/test.rs:494:22
[INFO] [stdout]     |
[INFO] [stdout] 494 |                     .map(|_| ());
[INFO] [stdout]     |                      ^^^ the trait `From<()>` is not implemented for `!`
[INFO] [stdout]     |
[INFO] [stdout] help: the trait `futures::Future` is implemented for `Forward<T, U>`
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/futures-0.1.27/src/stream/forward.rs:78:1
[INFO] [stdout]     |
[INFO] [stdout]  78 | / impl<T, U> Future for Forward<T, U>
[INFO] [stdout]  79 | |     where U: Sink<SinkItem=T::Item>,
[INFO] [stdout]  80 | |           T: Stream,
[INFO] [stdout]  81 | |           T::Error: From<U::SinkError>,
[INFO] [stdout]     | |_______________________________________^
[INFO] [stdout]     = note: this error might have been caused by changes to Rust's type-inference algorithm (see issue #148922 <https://github.com/rust-lang/rust/issues/148922> for more information)
[INFO] [stdout]     = help: you might have intended to use the type `()` here instead
[INFO] [stdout]     = note: required for `Forward<MapErr<UnboundedReceiver<Message>, {closure@...}>, ...>` to implement `futures::Future`
[INFO] [stdout]     = note: the full name for the type has been written to '/opt/rustwide/target/debug/deps/warp-3eb832e9cd1e8afd.long-type-3146564062875491922.txt'
[INFO] [stdout]     = note: consider using `--verbose` to print the full type name to the console
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the trait bound `!: From<()>` is not satisfied
[INFO] [stdout]     --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/warp-0.1.16/src/test.rs:501:30
[INFO] [stdout]      |
[INFO] [stdout]  501 |                     .forward(rd_tx.sink_map_err(|_| ()))
[INFO] [stdout]      |                      ------- ^^^^^^^^^^^^^^^^^^^^^^^^^^ the trait `From<()>` is not implemented for `!`
[INFO] [stdout]      |                      |
[INFO] [stdout]      |                      required by a bound introduced by this call
[INFO] [stdout]      |
[INFO] [stdout]      = note: this error might have been caused by changes to Rust's type-inference algorithm (see issue #148922 <https://github.com/rust-lang/rust/issues/148922> for more information)
[INFO] [stdout]      = help: you might have intended to use the type `()` here instead
[INFO] [stdout] note: the method call chain might not have had the expected associated types
[INFO] [stdout]     --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/warp-0.1.16/src/test.rs:501:36
[INFO] [stdout]      |
[INFO] [stdout]  501 |                     .forward(rd_tx.sink_map_err(|_| ()))
[INFO] [stdout]      |                              ----- ^^^^^^^^^^^^^^^^^^^^ `Sink::SinkError` is `()` here
[INFO] [stdout]      |                              |
[INFO] [stdout]      |                              this expression has type `UnboundedSender<Result<Message, Error>>`
[INFO] [stdout] note: required by a bound in `futures::Stream::forward`
[INFO] [stdout]     --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/futures-0.1.27/src/stream/mod.rs:1067:28
[INFO] [stdout]      |
[INFO] [stdout] 1065 |     fn forward<S>(self, sink: S) -> Forward<Self, S>
[INFO] [stdout]      |        ------- required by a bound in this associated function
[INFO] [stdout] 1066 |         where S: Sink<SinkItem = Self::Item>,
[INFO] [stdout] 1067 |               Self::Error: From<S::SinkError>,
[INFO] [stdout]      |                            ^^^^^^^^^^^^^^^^^^ required by this bound in `Stream::forward`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the trait bound `!: From<()>` is not satisfied
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/warp-0.1.16/src/test.rs:496:28
[INFO] [stdout]     |
[INFO] [stdout] 496 |                   let read = rx
[INFO] [stdout]     |  ____________________________^
[INFO] [stdout] 497 | |                     .take_while(|m| {
[INFO] [stdout] 498 | |                         futures::future::ok(!m.is_close())
[INFO] [stdout] 499 | |                     })
[INFO] [stdout] 500 | |                     .then(|result| Ok(result))
[INFO] [stdout] 501 | |                     .forward(rd_tx.sink_map_err(|_| ()))
[INFO] [stdout] 502 | |                     .map(|_| ());
[INFO] [stdout]     | |________________________________^ the trait `From<()>` is not implemented for `!`
[INFO] [stdout]     |
[INFO] [stdout] help: the trait `futures::Future` is implemented for `Forward<T, U>`
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/futures-0.1.27/src/stream/forward.rs:78:1
[INFO] [stdout]     |
[INFO] [stdout]  78 | / impl<T, U> Future for Forward<T, U>
[INFO] [stdout]  79 | |     where U: Sink<SinkItem=T::Item>,
[INFO] [stdout]  80 | |           T: Stream,
[INFO] [stdout]  81 | |           T::Error: From<U::SinkError>,
[INFO] [stdout]     | |_______________________________________^
[INFO] [stdout]     = note: this error might have been caused by changes to Rust's type-inference algorithm (see issue #148922 <https://github.com/rust-lang/rust/issues/148922> for more information)
[INFO] [stdout]     = help: you might have intended to use the type `()` here instead
[INFO] [stdout]     = note: required for `Forward<Then<TakeWhile<SplitStream<...>, ..., ...>, ..., ...>, ...>` to implement `futures::Future`
[INFO] [stdout]     = note: the full name for the type has been written to '/opt/rustwide/target/debug/deps/warp-3eb832e9cd1e8afd.long-type-13448365232632742230.txt'
[INFO] [stdout]     = note: consider using `--verbose` to print the full type name to the console
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the trait bound `!: From<()>` is not satisfied
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/warp-0.1.16/src/test.rs:502:22
[INFO] [stdout]     |
[INFO] [stdout] 502 |                     .map(|_| ());
[INFO] [stdout]     |                      ^^^ the trait `From<()>` is not implemented for `!`
[INFO] [stdout]     |
[INFO] [stdout] help: the trait `futures::Future` is implemented for `Forward<T, U>`
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/futures-0.1.27/src/stream/forward.rs:78:1
[INFO] [stdout]     |
[INFO] [stdout]  78 | / impl<T, U> Future for Forward<T, U>
[INFO] [stdout]  79 | |     where U: Sink<SinkItem=T::Item>,
[INFO] [stdout]  80 | |           T: Stream,
[INFO] [stdout]  81 | |           T::Error: From<U::SinkError>,
[INFO] [stdout]     | |_______________________________________^
[INFO] [stdout]     = note: this error might have been caused by changes to Rust's type-inference algorithm (see issue #148922 <https://github.com/rust-lang/rust/issues/148922> for more information)
[INFO] [stdout]     = help: you might have intended to use the type `()` here instead
[INFO] [stdout]     = note: required for `Forward<Then<TakeWhile<SplitStream<...>, ..., ...>, ..., ...>, ...>` to implement `futures::Future`
[INFO] [stdout]     = note: the full name for the type has been written to '/opt/rustwide/target/debug/deps/warp-3eb832e9cd1e8afd.long-type-13448365232632742230.txt'
[INFO] [stdout]     = note: consider using `--verbose` to print the full type name to the console
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the trait bound `!: From<()>` is not satisfied
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/warp-0.1.16/src/test.rs:504:40
[INFO] [stdout]     |
[INFO] [stdout] 504 |                 rt.block_on(write.join(read)).expect("websocket forward");
[INFO] [stdout]     |                                   ---- ^^^^ the trait `From<()>` is not implemented for `!`
[INFO] [stdout]     |                                   |
[INFO] [stdout]     |                                   required by a bound introduced by this call
[INFO] [stdout]     |
[INFO] [stdout] help: the trait `futures::Future` is implemented for `futures::future::Map<A, F>`
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/futures-0.1.27/src/future/map.rs:22:1
[INFO] [stdout]     |
[INFO] [stdout]  22 | / impl<U, A, F> Future for Map<A, F>
[INFO] [stdout]  23 | |     where A: Future,
[INFO] [stdout]  24 | |           F: FnOnce(A::Item) -> U,
[INFO] [stdout]     | |__________________________________^
[INFO] [stdout]     = note: this error might have been caused by changes to Rust's type-inference algorithm (see issue #148922 <https://github.com/rust-lang/rust/issues/148922> for more information)
[INFO] [stdout]     = help: you might have intended to use the type `()` here instead
[INFO] [stdout]     = note: required for `Forward<Then<TakeWhile<SplitStream<...>, ..., ...>, ..., ...>, ...>` to implement `futures::Future`
[INFO] [stdout]     = note: 1 redundant requirement hidden
[INFO] [stdout]     = note: required for `Map<Forward<Then<TakeWhile<..., ..., ...>, ..., ...>, ...>, ...>` to implement `futures::Future`
[INFO] [stdout] note: required by a bound in `futures::Future::join`
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/futures-0.1.27/src/future/mod.rs:716:29
[INFO] [stdout]     |
[INFO] [stdout] 715 |     fn join<B>(self, other: B) -> Join<Self, B::Future>
[INFO] [stdout]     |        ---- required by a bound in this associated function
[INFO] [stdout] 716 |         where B: IntoFuture<Error=Self::Error>,
[INFO] [stdout]     |                             ^^^^^^^^^^^^^^^^^ required by this bound in `Future::join`
[INFO] [stdout]     = note: the full name for the type has been written to '/opt/rustwide/target/debug/deps/warp-3eb832e9cd1e8afd.long-type-2301091535808158514.txt'
[INFO] [stdout]     = note: consider using `--verbose` to print the full type name to the console
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0277`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `warp` (lib) due to 7 previous errors
[INFO] running `Command { std: "docker" "inspect" "5652ba735874fb3d5958042538adab970105ed850d79d15be87b8630aa2bdb97", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5652ba735874fb3d5958042538adab970105ed850d79d15be87b8630aa2bdb97", kill_on_drop: false }`
[INFO] [stdout] 5652ba735874fb3d5958042538adab970105ed850d79d15be87b8630aa2bdb97
