[INFO] fetching crate declarative_enum_dispatch 0.1.2...
[INFO] checking declarative_enum_dispatch-0.1.2 against try#998b6603a58e47f42ccce7a67943234e96b6839e for pr-143170
[INFO] extracting crate declarative_enum_dispatch 0.1.2 into /workspace/builds/worker-0-tc2/source
[INFO] started tweaking crates.io crate declarative_enum_dispatch 0.1.2
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate declarative_enum_dispatch 0.1.2
[INFO] tweaked toml for crates.io crate declarative_enum_dispatch 0.1.2 written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate declarative_enum_dispatch 0.1.2 on toolchain 998b6603a58e47f42ccce7a67943234e96b6839e
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+998b6603a58e47f42ccce7a67943234e96b6839e" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate declarative_enum_dispatch 0.1.2 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" "+998b6603a58e47f42ccce7a67943234e96b6839e" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+998b6603a58e47f42ccce7a67943234e96b6839e" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 7937907e7e7d92a9f9b0aa913c5d208be33b56edea9559db0cccab4880f1895f
[INFO] running `Command { std: "docker" "start" "-a" "7937907e7e7d92a9f9b0aa913c5d208be33b56edea9559db0cccab4880f1895f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7937907e7e7d92a9f9b0aa913c5d208be33b56edea9559db0cccab4880f1895f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7937907e7e7d92a9f9b0aa913c5d208be33b56edea9559db0cccab4880f1895f", kill_on_drop: false }`
[INFO] [stdout] 7937907e7e7d92a9f9b0aa913c5d208be33b56edea9559db0cccab4880f1895f
[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" "-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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+998b6603a58e47f42ccce7a67943234e96b6839e" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] bb9c86daefd4d783ec0c6b9845c78782ec6e016f39545a76cf1f7013259741a1
[INFO] running `Command { std: "docker" "start" "-a" "bb9c86daefd4d783ec0c6b9845c78782ec6e016f39545a76cf1f7013259741a1", kill_on_drop: false }`
[INFO] [stderr]     Checking declarative_enum_dispatch v0.1.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unexpected `cfg` condition value: `platform_specific`
[INFO] [stdout]   --> examples/example.rs:31:15
[INFO] [stdout]    |
[INFO] [stdout] 31 |         #[cfg(feature = "platform_specific")]
[INFO] [stdout]    |               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove the condition
[INFO] [stdout]    |
[INFO] [stdout]    = note: no expected values for `feature`
[INFO] [stdout]    = help: consider adding `platform_specific` as a feature in `Cargo.toml`
[INFO] [stdout]    = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout]    = note: `#[warn(unexpected_cfgs)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition value: `platform_specific`
[INFO] [stdout]   --> examples/example.rs:23:15
[INFO] [stdout]    |
[INFO] [stdout] 23 |         #[cfg(feature = "platform_specific")]
[INFO] [stdout]    |               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove the condition
[INFO] [stdout]    |
[INFO] [stdout]    = note: no expected values for `feature`
[INFO] [stdout]    = help: consider adding `platform_specific` as a feature in `Cargo.toml`
[INFO] [stdout]    = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of `async fn` in public traits is discouraged as auto trait bounds cannot be specified
[INFO] [stdout]   --> examples/example.rs:20:9
[INFO] [stdout]    |
[INFO] [stdout] 20 |         async fn send(&self);
[INFO] [stdout]    |         ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: you can suppress this lint if you plan to use the trait only in your own code, or do not care about auto traits like `Send` on the `Future`
[INFO] [stdout]    = note: `#[warn(async_fn_in_trait)]` on by default
[INFO] [stdout] help: you can alternatively desugar to a normal `fn` that returns `impl Future` and add any desired bounds such as `Send`, but these cannot be relaxed without a breaking API change
[INFO] [stdout]    |
[INFO] [stdout] 20 -         async fn send(&self);
[INFO] [stdout] 20 +         fn send(&self) -> impl std::future::Future<Output = ()> + Send;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.18s
[INFO] running `Command { std: "docker" "inspect" "bb9c86daefd4d783ec0c6b9845c78782ec6e016f39545a76cf1f7013259741a1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bb9c86daefd4d783ec0c6b9845c78782ec6e016f39545a76cf1f7013259741a1", kill_on_drop: false }`
[INFO] [stdout] bb9c86daefd4d783ec0c6b9845c78782ec6e016f39545a76cf1f7013259741a1