[INFO] fetching crate async-dropper 0.3.1...
[INFO] checking async-dropper-0.3.1 against master#b0696a5160711c068cb1f01b7437db7990d15750 for pr-121848
[INFO] extracting crate async-dropper 0.3.1 into /workspace/builds/worker-4-tc1/source
[INFO] validating manifest of crates.io crate async-dropper 0.3.1 on toolchain b0696a5160711c068cb1f01b7437db7990d15750
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b0696a5160711c068cb1f01b7437db7990d15750" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate async-dropper 0.3.1
[INFO] removed 5 missing examples
[INFO] finished tweaking crates.io crate async-dropper 0.3.1
[INFO] tweaked toml for crates.io crate async-dropper 0.3.1 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] crate crates.io crate async-dropper 0.3.1 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" "+b0696a5160711c068cb1f01b7437db7990d15750" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded async-lock v2.7.0
[INFO] [stderr]   Downloaded async-task v4.4.0
[INFO] [stderr]   Downloaded async-dropper-derive v0.3.1
[INFO] [stderr]   Downloaded async-dropper-simple v0.2.5
[INFO] [stderr]   Downloaded blocking v1.3.1
[INFO] [stderr]   Downloaded parking v2.1.0
[INFO] [stderr]   Downloaded async-attributes v1.1.2
[INFO] [stderr]   Downloaded tokio-macros v2.1.0
[INFO] [stderr]   Downloaded async-global-executor v2.3.1
[INFO] [stderr]   Downloaded atomic-waker v1.1.1
[INFO] [stderr]   Downloaded value-bag v1.4.1
[INFO] [stderr]   Downloaded async-trait v0.1.74
[INFO] [stderr]   Downloaded proc-macro2 v1.0.69
[INFO] [stderr]   Downloaded syn v2.0.38
[INFO] [stderr]   Downloaded rustix v0.37.23
[INFO] [stderr]   Downloaded memchr v2.6.4
[INFO] [stderr]   Downloaded tokio v1.33.0
[INFO] [stderr]   Downloaded libc v0.2.149
[INFO] [stderr]   Downloaded concurrent-queue v2.2.0
[INFO] [stderr]   Downloaded async-executor v1.5.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+b0696a5160711c068cb1f01b7437db7990d15750" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 50ab7f76a1c3572b0dab517bc31fc525e466a54d260a74e2894f64b546733840
[INFO] running `Command { std: "docker" "start" "-a" "50ab7f76a1c3572b0dab517bc31fc525e466a54d260a74e2894f64b546733840", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "50ab7f76a1c3572b0dab517bc31fc525e466a54d260a74e2894f64b546733840", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "50ab7f76a1c3572b0dab517bc31fc525e466a54d260a74e2894f64b546733840", kill_on_drop: false }`
[INFO] [stdout] 50ab7f76a1c3572b0dab517bc31fc525e466a54d260a74e2894f64b546733840
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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=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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+b0696a5160711c068cb1f01b7437db7990d15750" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 21521ce36e24acd93e4e6346d929772b1215d9ced3b3306266d83c922ed1b152
[INFO] running `Command { std: "docker" "start" "-a" "21521ce36e24acd93e4e6346d929772b1215d9ced3b3306266d83c922ed1b152", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.69
[INFO] [stderr]    Compiling futures-core v0.3.28
[INFO] [stderr]     Checking futures-io v0.3.28
[INFO] [stderr]    Compiling libc v0.2.149
[INFO] [stderr]     Checking memchr v2.6.4
[INFO] [stderr]    Compiling semver v1.0.18
[INFO] [stderr]     Checking event-listener v2.5.3
[INFO] [stderr]     Checking value-bag v1.4.1
[INFO] [stderr]    Compiling futures-task v0.3.28
[INFO] [stderr]    Compiling futures-channel v0.3.28
[INFO] [stderr]     Checking futures-sink v0.3.28
[INFO] [stderr]    Compiling slab v0.4.8
[INFO] [stderr]     Checking fastrand v1.9.0
[INFO] [stderr]    Compiling io-lifetimes v1.0.11
[INFO] [stderr]     Checking waker-fn v1.1.0
[INFO] [stderr]     Checking concurrent-queue v2.2.0
[INFO] [stderr]     Checking parking v2.1.0
[INFO] [stderr]    Compiling futures-util v0.3.28
[INFO] [stderr]    Compiling polling v2.8.0
[INFO] [stderr]    Compiling rustix v0.37.23
[INFO] [stderr]     Checking async-lock v2.7.0
[INFO] [stderr]    Compiling async-trait v0.1.74
[INFO] [stderr]     Checking log v0.4.19
[INFO] [stderr]    Compiling async-io v1.13.0
[INFO] [stderr]     Checking async-task v4.4.0
[INFO] [stderr]     Checking linux-raw-sys v0.3.8
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]     Checking async-channel v1.9.0
[INFO] [stderr]     Checking atomic-waker v1.1.1
[INFO] [stderr]     Checking kv-log-macro v1.0.7
[INFO] [stderr]     Checking futures-lite v1.13.0
[INFO] [stderr]    Compiling rustc_version v0.4.0
[INFO] [stderr]    Compiling quote v1.0.33
[INFO] [stderr]    Compiling async-dropper-simple v0.2.5
[INFO] [stderr]    Compiling syn v2.0.38
[INFO] [stderr]     Checking socket2 v0.4.9
[INFO] [stderr]     Checking num_cpus v1.16.0
[INFO] [stderr]     Checking async-executor v1.5.1
[INFO] [stderr]     Checking blocking v1.3.1
[INFO] [stderr]     Checking async-global-executor v2.3.1
[INFO] [stderr]    Compiling async-attributes v1.1.2
[INFO] [stderr]    Compiling futures-macro v0.3.28
[INFO] [stderr]    Compiling tokio-macros v2.1.0
[INFO] [stderr]     Checking async-std v1.12.0
[INFO] [stderr]     Checking tokio v1.33.0
[INFO] [stderr]    Compiling async-dropper-derive v0.3.1
[INFO] [stdout] error: either 'async-std' or 'tokio' features must be enabled for the async-dropper crate
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/async-dropper-derive-0.3.1/src/lib.rs:113:5
[INFO] [stdout]     |
[INFO] [stdout] 113 | /     compile_error!(
[INFO] [stdout] 114 | |         "either 'async-std' or 'tokio' features must be enabled for the async-dropper crate"
[INFO] [stdout] 115 | |     );
[INFO] [stdout]     | |_____^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/async-dropper-derive-0.3.1/src/lib.rs:9:13
[INFO] [stdout]     |
[INFO] [stdout] 9   |             gen_impl(&derive_input),
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^ expected `proc_macro2::TokenStream`, found `proc_macro::TokenStream`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `proc_macro::TokenStream` and `proc_macro2::TokenStream` have similar names, but are actually distinct types
[INFO] [stdout] note: `proc_macro::TokenStream` is defined in crate `proc_macro`
[INFO] [stdout]    --> /rustc/b0696a5160711c068cb1f01b7437db7990d15750/library/proc_macro/src/lib.rs:84:1
[INFO] [stdout] note: `proc_macro2::TokenStream` is defined in crate `proc_macro2`
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/proc-macro2-1.0.69/src/lib.rs:173:1
[INFO] [stdout]     |
[INFO] [stdout] 173 | pub struct TokenStream {
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] help: call `Into::into` on this expression to convert `proc_macro::TokenStream` into `proc_macro2::TokenStream`
[INFO] [stdout]     |
[INFO] [stdout] 9   |             gen_impl(&derive_input).into(),
[INFO] [stdout]     |                                    +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/async-dropper-derive-0.3.1/src/lib.rs:112:33
[INFO] [stdout]     |
[INFO] [stdout] 112 | fn gen_impl(_: &DeriveInput) -> proc_macro::TokenStream {
[INFO] [stdout]     |    --------                     ^^^^^^^^^^^^^^^^^^^^^^^ expected `TokenStream`, found `()`
[INFO] [stdout]     |    |
[INFO] [stdout]     |    implicitly returns `()` as its body has no tail or `return` expression
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 3 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0308`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `async-dropper-derive` (lib) due to 4 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "21521ce36e24acd93e4e6346d929772b1215d9ced3b3306266d83c922ed1b152", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "21521ce36e24acd93e4e6346d929772b1215d9ced3b3306266d83c922ed1b152", kill_on_drop: false }`
[INFO] [stdout] 21521ce36e24acd93e4e6346d929772b1215d9ced3b3306266d83c922ed1b152
[INFO] checking async-dropper-0.3.1 against try#bfe97fcae016881ad333f0ff8cea2cadb9cf136c for pr-121848
[INFO] extracting crate async-dropper 0.3.1 into /workspace/builds/worker-4-tc2/source
[INFO] validating manifest of crates.io crate async-dropper 0.3.1 on toolchain bfe97fcae016881ad333f0ff8cea2cadb9cf136c
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+bfe97fcae016881ad333f0ff8cea2cadb9cf136c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate async-dropper 0.3.1
[INFO] removed 5 missing examples
[INFO] finished tweaking crates.io crate async-dropper 0.3.1
[INFO] tweaked toml for crates.io crate async-dropper 0.3.1 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] crate crates.io crate async-dropper 0.3.1 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" "+bfe97fcae016881ad333f0ff8cea2cadb9cf136c" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+bfe97fcae016881ad333f0ff8cea2cadb9cf136c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 5a743169a4c7a8e05e28671c814e6f0ccc3d09667109af4f9f03389d4edcf7d9
[INFO] running `Command { std: "docker" "start" "-a" "5a743169a4c7a8e05e28671c814e6f0ccc3d09667109af4f9f03389d4edcf7d9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5a743169a4c7a8e05e28671c814e6f0ccc3d09667109af4f9f03389d4edcf7d9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5a743169a4c7a8e05e28671c814e6f0ccc3d09667109af4f9f03389d4edcf7d9", kill_on_drop: false }`
[INFO] [stdout] 5a743169a4c7a8e05e28671c814e6f0ccc3d09667109af4f9f03389d4edcf7d9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+bfe97fcae016881ad333f0ff8cea2cadb9cf136c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a2790fcf4b0209673205ab3fbdf69f7adbd8aa92bb353dc32b69e1826099db84
[INFO] running `Command { std: "docker" "start" "-a" "a2790fcf4b0209673205ab3fbdf69f7adbd8aa92bb353dc32b69e1826099db84", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.69
[INFO] [stderr]    Compiling futures-core v0.3.28
[INFO] [stderr]    Compiling slab v0.4.8
[INFO] [stderr]     Checking futures-io v0.3.28
[INFO] [stderr]    Compiling libc v0.2.149
[INFO] [stderr]     Checking memchr v2.6.4
[INFO] [stderr]    Compiling futures-task v0.3.28
[INFO] [stderr]     Checking value-bag v1.4.1
[INFO] [stderr]     Checking event-listener v2.5.3
[INFO] [stderr]    Compiling semver v1.0.18
[INFO] [stderr]    Compiling futures-channel v0.3.28
[INFO] [stderr]    Compiling futures-util v0.3.28
[INFO] [stderr]    Compiling io-lifetimes v1.0.11
[INFO] [stderr]     Checking waker-fn v1.1.0
[INFO] [stderr]     Checking futures-sink v0.3.28
[INFO] [stderr]     Checking concurrent-queue v2.2.0
[INFO] [stderr]     Checking fastrand v1.9.0
[INFO] [stderr]     Checking parking v2.1.0
[INFO] [stderr]    Compiling polling v2.8.0
[INFO] [stderr]     Checking async-lock v2.7.0
[INFO] [stderr]    Compiling rustix v0.37.23
[INFO] [stderr]     Checking log v0.4.19
[INFO] [stderr]    Compiling async-trait v0.1.74
[INFO] [stderr]    Compiling async-io v1.13.0
[INFO] [stderr]     Checking async-task v4.4.0
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]     Checking linux-raw-sys v0.3.8
[INFO] [stderr]     Checking async-channel v1.9.0
[INFO] [stderr]     Checking atomic-waker v1.1.1
[INFO] [stderr]     Checking kv-log-macro v1.0.7
[INFO] [stderr]     Checking futures-lite v1.13.0
[INFO] [stderr]    Compiling rustc_version v0.4.0
[INFO] [stderr]    Compiling quote v1.0.33
[INFO] [stderr]    Compiling async-dropper-simple v0.2.5
[INFO] [stderr]    Compiling syn v2.0.38
[INFO] [stderr]     Checking socket2 v0.4.9
[INFO] [stderr]     Checking num_cpus v1.16.0
[INFO] [stderr]     Checking async-executor v1.5.1
[INFO] [stderr]     Checking blocking v1.3.1
[INFO] [stderr]     Checking async-global-executor v2.3.1
[INFO] [stderr]    Compiling async-attributes v1.1.2
[INFO] [stderr]    Compiling futures-macro v0.3.28
[INFO] [stderr]    Compiling tokio-macros v2.1.0
[INFO] [stderr]     Checking async-std v1.12.0
[INFO] [stderr]     Checking tokio v1.33.0
[INFO] [stderr]    Compiling async-dropper-derive v0.3.1
[INFO] [stdout] error: either 'async-std' or 'tokio' features must be enabled for the async-dropper crate
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/async-dropper-derive-0.3.1/src/lib.rs:113:5
[INFO] [stdout]     |
[INFO] [stdout] 113 | /     compile_error!(
[INFO] [stdout] 114 | |         "either 'async-std' or 'tokio' features must be enabled for the async-dropper crate"
[INFO] [stdout] 115 | |     );
[INFO] [stdout]     | |_____^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/async-dropper-derive-0.3.1/src/lib.rs:9:13
[INFO] [stdout]     |
[INFO] [stdout] 9   |             gen_impl(&derive_input),
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^ expected `proc_macro2::TokenStream`, found `proc_macro::TokenStream`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `proc_macro::TokenStream` and `proc_macro2::TokenStream` have similar names, but are actually distinct types
[INFO] [stdout] note: `proc_macro::TokenStream` is defined in crate `proc_macro`
[INFO] [stdout]    --> /rustc/bfe97fcae016881ad333f0ff8cea2cadb9cf136c/library/proc_macro/src/lib.rs:84:1
[INFO] [stdout] note: `proc_macro2::TokenStream` is defined in crate `proc_macro2`
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/proc-macro2-1.0.69/src/lib.rs:173:1
[INFO] [stdout]     |
[INFO] [stdout] 173 | pub struct TokenStream {
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] help: call `Into::into` on this expression to convert `proc_macro::TokenStream` into `proc_macro2::TokenStream`
[INFO] [stdout]     |
[INFO] [stdout] 9   |             gen_impl(&derive_input).into(),
[INFO] [stdout]     |                                    +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/async-dropper-derive-0.3.1/src/lib.rs:112:33
[INFO] [stdout]     |
[INFO] [stdout] 112 | fn gen_impl(_: &DeriveInput) -> proc_macro::TokenStream {
[INFO] [stdout]     |    --------                     ^^^^^^^^^^^^^^^^^^^^^^^ expected `TokenStream`, found `()`
[INFO] [stdout]     |    |
[INFO] [stdout]     |    implicitly returns `()` as its body has no tail or `return` expression
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 3 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0308`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `async-dropper-derive` (lib) due to 4 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "a2790fcf4b0209673205ab3fbdf69f7adbd8aa92bb353dc32b69e1826099db84", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a2790fcf4b0209673205ab3fbdf69f7adbd8aa92bb353dc32b69e1826099db84", kill_on_drop: false }`
[INFO] [stdout] a2790fcf4b0209673205ab3fbdf69f7adbd8aa92bb353dc32b69e1826099db84
