[INFO] cloning repository https://github.com/aaronriekenberg/rust_warp
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/aaronriekenberg/rust_warp" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Faaronriekenberg%2Frust_warp", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Faaronriekenberg%2Frust_warp'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] b1ec5c2e1caa91fb7fce49362a878a140893cb6c
[INFO] checking aaronriekenberg/rust_warp against try#b2f80f6008cdafc35b4472bd46afa16cc6b0cd63 for pr-79470
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Faaronriekenberg%2Frust_warp" "/workspace/builds/worker-7/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/aaronriekenberg/rust_warp on toolchain b2f80f6008cdafc35b4472bd46afa16cc6b0cd63
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b2f80f6008cdafc35b4472bd46afa16cc6b0cd63" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/aaronriekenberg/rust_warp
[INFO] finished tweaking git repo https://github.com/aaronriekenberg/rust_warp
[INFO] tweaked toml for git repo https://github.com/aaronriekenberg/rust_warp written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate git repo https://github.com/aaronriekenberg/rust_warp already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b2f80f6008cdafc35b4472bd46afa16cc6b0cd63" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "rustops/crates-build-env@sha256:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+b2f80f6008cdafc35b4472bd46afa16cc6b0cd63" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 83d717f6d6c4f0e215892b56c200b7ae18e92872a9dffff3c94989dca0d7c537
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[INFO] running `Command { std: "docker" "start" "-a" "83d717f6d6c4f0e215892b56c200b7ae18e92872a9dffff3c94989dca0d7c537", kill_on_drop: false }`
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[INFO] running `Command { std: "docker" "rm" "-f" "83d717f6d6c4f0e215892b56c200b7ae18e92872a9dffff3c94989dca0d7c537", kill_on_drop: false }`
[INFO] [stdout] 83d717f6d6c4f0e215892b56c200b7ae18e92872a9dffff3c94989dca0d7c537
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+b2f80f6008cdafc35b4472bd46afa16cc6b0cd63" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] fb87e51aa0b16804caf188ffda9ad7efeb094de51474e642cb01769253a53c9f
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "fb87e51aa0b16804caf188ffda9ad7efeb094de51474e642cb01769253a53c9f", kill_on_drop: false }`
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[INFO] [stderr]     Checking tokio v0.1.22
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[INFO] [stderr]    Compiling headers-derive v0.1.1
[INFO] [stderr]    Compiling serde_derive v1.0.100
[INFO] [stderr]     Checking multipart v0.16.1
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[INFO] [stderr]     Checking warp v0.1.19
[INFO] [stdout] error[E0277]: the trait bound `!: From<()>` is not satisfied
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/warp-0.1.19/src/test.rs:502:22
[INFO] [stdout]     |
[INFO] [stdout] 502 |                     .forward(tx.sink_map_err(|_| ()))
[INFO] [stdout]     |                      ^^^^^^^ the trait `From<()>` is not implemented for `!`
[INFO] [stdout]     |
[INFO] [stdout]     = note: the trait is implemented for `()`. Possibly this error has been caused by changes to Rust's type-inference algorithm (see issue #48950 <https://github.com/rust-lang/rust/issues/48950> for more information). Consider whether you meant to use the type `()` here instead.
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the trait bound `!: From<()>` is not satisfied
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/warp-0.1.19/src/test.rs:503:22
[INFO] [stdout]     |
[INFO] [stdout] 503 |                     .map(|_| ());
[INFO] [stdout]     |                      ^^^ the trait `From<()>` is not implemented for `!`
[INFO] [stdout]     |
[INFO] [stdout]     = note: the trait is implemented for `()`. Possibly this error has been caused by changes to Rust's type-inference algorithm (see issue #48950 <https://github.com/rust-lang/rust/issues/48950> for more information). Consider whether you meant to use the type `()` here instead.
[INFO] [stdout]     = note: required because of the requirements on the impl of `futures::Future` for `Forward<futures::stream::MapErr<futures::sync::mpsc::UnboundedReceiver<ws::Message>, [closure@/opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/warp-0.1.19/src/test.rs:499:30: 501:22]>, SinkMapErr<SplitSink<ws::WebSocket>, [closure@/opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/warp-0.1.19/src/test.rs:502:46: 502:52]>>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the trait bound `!: From<()>` is not satisfied
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/warp-0.1.19/src/test.rs:510:22
[INFO] [stdout]     |
[INFO] [stdout] 510 |                     .forward(rd_tx.sink_map_err(|_| ()))
[INFO] [stdout]     |                      ^^^^^^^ the trait `From<()>` is not implemented for `!`
[INFO] [stdout]     |
[INFO] [stdout]     = note: the trait is implemented for `()`. Possibly this error has been caused by changes to Rust's type-inference algorithm (see issue #48950 <https://github.com/rust-lang/rust/issues/48950> for more information). Consider whether you meant to use the type `()` here instead.
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the trait bound `!: From<()>` is not satisfied
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/warp-0.1.19/src/test.rs:511:22
[INFO] [stdout]     |
[INFO] [stdout] 511 |                     .map(|_| ());
[INFO] [stdout]     |                      ^^^ the trait `From<()>` is not implemented for `!`
[INFO] [stdout]     |
[INFO] [stdout]     = note: the trait is implemented for `()`. Possibly this error has been caused by changes to Rust's type-inference algorithm (see issue #48950 <https://github.com/rust-lang/rust/issues/48950> for more information). Consider whether you meant to use the type `()` here instead.
[INFO] [stdout]     = note: required because of the requirements on the impl of `futures::Future` for `Forward<futures::stream::Then<futures::stream::TakeWhile<SplitStream<ws::WebSocket>, [closure@/opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/warp-0.1.19/src/test.rs:506:33: 508:22], FutureResult<bool, error::Error>>, [closure@/opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/warp-0.1.19/src/test.rs:509:27: 509:46], std::result::Result<std::result::Result<ws::Message, error::Error>, !>>, SinkMapErr<futures::sync::mpsc::UnboundedSender<std::result::Result<ws::Message, error::Error>>, [closure@/opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/warp-0.1.19/src/test.rs:510:49: 510:55]>>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the trait bound `!: From<()>` is not satisfied
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/warp-0.1.19/src/test.rs:513:35
[INFO] [stdout]     |
[INFO] [stdout] 513 |                 rt.block_on(write.join(read)).expect("websocket forward");
[INFO] [stdout]     |                                   ^^^^ the trait `From<()>` is not implemented for `!`
[INFO] [stdout]     |
[INFO] [stdout]     = note: the trait is implemented for `()`. Possibly this error has been caused by changes to Rust's type-inference algorithm (see issue #48950 <https://github.com/rust-lang/rust/issues/48950> for more information). Consider whether you meant to use the type `()` here instead.
[INFO] [stdout]     = note: required because of the requirements on the impl of `futures::Future` for `Forward<futures::stream::MapErr<futures::sync::mpsc::UnboundedReceiver<ws::Message>, [closure@/opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/warp-0.1.19/src/test.rs:499:30: 501:22]>, SinkMapErr<SplitSink<ws::WebSocket>, [closure@/opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/warp-0.1.19/src/test.rs:502:46: 502:52]>>`
[INFO] [stdout]     = note: 1 redundant requirements hidden
[INFO] [stdout]     = note: required because of the requirements on the impl of `futures::Future` for `futures::Map<Forward<futures::stream::MapErr<futures::sync::mpsc::UnboundedReceiver<ws::Message>, [closure@/opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/warp-0.1.19/src/test.rs:499:30: 501:22]>, SinkMapErr<SplitSink<ws::WebSocket>, [closure@/opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/warp-0.1.19/src/test.rs:502:46: 502:52]>>, [closure@/opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/warp-0.1.19/src/test.rs:503:26: 503:32]>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 5 previous errors
[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`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "fb87e51aa0b16804caf188ffda9ad7efeb094de51474e642cb01769253a53c9f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fb87e51aa0b16804caf188ffda9ad7efeb094de51474e642cb01769253a53c9f", kill_on_drop: false }`
[INFO] [stdout] fb87e51aa0b16804caf188ffda9ad7efeb094de51474e642cb01769253a53c9f