[INFO] fetching crate tower-async-bridge 0.2.0...
[INFO] testing tower-async-bridge-0.2.0 against 1.95.0 for beta-1.96-2
[INFO] extracting crate tower-async-bridge 0.2.0 into /workspace/builds/worker-2-tc1/source
[INFO] started tweaking crates.io crate tower-async-bridge 0.2.0
[INFO] finished tweaking crates.io crate tower-async-bridge 0.2.0
[INFO] tweaked toml for crates.io crate tower-async-bridge 0.2.0 written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate tower-async-bridge 0.2.0 on toolchain 1.95.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.95.0" "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" "+1.95.0" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 65 packages to latest compatible versions
[INFO] [stderr]       Adding tower v0.4.13 (available: v0.5.3)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.95.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded tower-async-service v0.2.0
[INFO] [stderr]   Downloaded tower-async-layer v0.2.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/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" "+1.95.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] efbe1dd4ad0b8572cf1f08c2f5a35302aa051d0ce6ae1924c76c0e1cf02b8de3
[INFO] running `Command { std: "docker" "start" "-a" "efbe1dd4ad0b8572cf1f08c2f5a35302aa051d0ce6ae1924c76c0e1cf02b8de3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "efbe1dd4ad0b8572cf1f08c2f5a35302aa051d0ce6ae1924c76c0e1cf02b8de3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "efbe1dd4ad0b8572cf1f08c2f5a35302aa051d0ce6ae1924c76c0e1cf02b8de3", kill_on_drop: false }`
[INFO] [stdout] efbe1dd4ad0b8572cf1f08c2f5a35302aa051d0ce6ae1924c76c0e1cf02b8de3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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" "+1.95.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6c30e33d7b12b54501ac41f12222f4ccaf9f26bff379c90e57ae5f4ac2f07564
[INFO] running `Command { std: "docker" "start" "-a" "6c30e33d7b12b54501ac41f12222f4ccaf9f26bff379c90e57ae5f4ac2f07564", kill_on_drop: false }`
[INFO] [stderr]    Compiling concurrent-queue v2.5.0
[INFO] [stderr]    Compiling tower-async-layer v0.2.0
[INFO] [stderr]    Compiling tower-async-service v0.2.0
[INFO] [stderr]    Compiling event-listener v5.4.1
[INFO] [stderr]    Compiling event-listener-strategy v0.5.4
[INFO] [stderr]    Compiling async-lock v3.4.2
[INFO] [stderr]    Compiling tower-async-bridge v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:9:1
[INFO] [stdout]   |
[INFO] [stdout] 9 | #![feature(associated_type_bounds)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = help: the feature `associated_type_bounds` has been stable since `1.79.0` and no longer requires an attribute to enable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: return type notation arguments must be elided with `..`
[INFO] [stdout]   --> src/into_classic/classic_wrapper.rs:27:50
[INFO] [stdout]    |
[INFO] [stdout] 27 |     S: tower_async_service::Service<Request, call(): Send> + Send + 'static,
[INFO] [stdout]    |                                                  ^^
[INFO] [stdout]    |
[INFO] [stdout] help: use the correct syntax by adding `..` to the arguments
[INFO] [stdout]    |
[INFO] [stdout] 27 |     S: tower_async_service::Service<Request, call(..): Send> + Send + 'static,
[INFO] [stdout]    |                                                   ++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `associated_type_bounds` has been stable since 1.79.0 and no longer requires an attribute to enable
[INFO] [stdout]  --> src/lib.rs:9:12
[INFO] [stdout]   |
[INFO] [stdout] 9 | #![feature(associated_type_bounds)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(stable_features)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `tower-async-bridge` (lib) due to 2 previous errors; 1 warning emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "6c30e33d7b12b54501ac41f12222f4ccaf9f26bff379c90e57ae5f4ac2f07564", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6c30e33d7b12b54501ac41f12222f4ccaf9f26bff379c90e57ae5f4ac2f07564", kill_on_drop: false }`
[INFO] [stdout] 6c30e33d7b12b54501ac41f12222f4ccaf9f26bff379c90e57ae5f4ac2f07564
