[INFO] cloning repository https://github.com/ltfschoen/kobold-test
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ltfschoen/kobold-test" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fltfschoen%2Fkobold-test", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fltfschoen%2Fkobold-test'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 67545449b1c39d514d052249b34253dafa802377
[INFO] testing ltfschoen/kobold-test against 1.80.0 for beta-1.81-2
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fltfschoen%2Fkobold-test" "/workspace/builds/worker-7-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/ltfschoen/kobold-test on toolchain 1.80.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.80.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-7-tc1/source/rust-toolchain.toml
[INFO] started tweaking git repo https://github.com/ltfschoen/kobold-test
[INFO] finished tweaking git repo https://github.com/ltfschoen/kobold-test
[INFO] tweaked toml for git repo https://github.com/ltfschoen/kobold-test written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/ltfschoen/kobold-test 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" "+1.80.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating git repository `https://github.com/maciejhirsz/kobold.git`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded fast_qr v0.8.4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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:dff56e7819e73ed36160586b3445e93eb0be776c16704aeeded9c3fb668b2384" "/opt/rustwide/cargo-home/bin/cargo" "+1.80.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ab36d32f69fd3488b5b7c844f02005dbb5d9ece0445881e2c5ae63a3152132ff
[INFO] running `Command { std: "docker" "start" "-a" "ab36d32f69fd3488b5b7c844f02005dbb5d9ece0445881e2c5ae63a3152132ff", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ab36d32f69fd3488b5b7c844f02005dbb5d9ece0445881e2c5ae63a3152132ff", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ab36d32f69fd3488b5b7c844f02005dbb5d9ece0445881e2c5ae63a3152132ff", kill_on_drop: false }`
[INFO] [stdout] ab36d32f69fd3488b5b7c844f02005dbb5d9ece0445881e2c5ae63a3152132ff
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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:dff56e7819e73ed36160586b3445e93eb0be776c16704aeeded9c3fb668b2384" "/opt/rustwide/cargo-home/bin/cargo" "+1.80.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a0cb408707c6fc1c09a4cd7d9cb7409c40fd7477cecbc4fe8a9cba30203bba95
[INFO] running `Command { std: "docker" "start" "-a" "a0cb408707c6fc1c09a4cd7d9cb7409c40fd7477cecbc4fe8a9cba30203bba95", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.52
[INFO] [stderr]    Compiling unicode-ident v1.0.8
[INFO] [stderr]    Compiling quote v1.0.26
[INFO] [stderr]    Compiling log v0.4.17
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling wasm-bindgen-shared v0.2.84
[INFO] [stderr]    Compiling cfg-if v1.0.0
[INFO] [stderr]    Compiling once_cell v1.17.1
[INFO] [stderr]    Compiling bumpalo v3.12.0
[INFO] [stderr]    Compiling wasm-bindgen v0.2.84
[INFO] [stderr]    Compiling beef v0.5.2
[INFO] [stderr]    Compiling arrayvec v0.7.2
[INFO] [stderr]    Compiling fnv v1.0.7
[INFO] [stderr]    Compiling itoa v1.0.6
[INFO] [stderr]    Compiling ryu v1.0.13
[INFO] [stderr]    Compiling fast_qr v0.8.4
[INFO] [stderr]    Compiling kobold_macros v0.5.0 (https://github.com/maciejhirsz/kobold.git?rev=53eacf69d2ea3f25a47e58a3ccd11dcaf73d48bf#53eacf69)
[INFO] [stderr]    Compiling wasm-bindgen-backend v0.2.84
[INFO] [stderr]    Compiling wasm-bindgen-macro-support v0.2.84
[INFO] [stderr]    Compiling wasm-bindgen-macro v0.2.84
[INFO] [stderr]    Compiling js-sys v0.3.61
[INFO] [stderr]    Compiling console_error_panic_hook v0.1.7
[INFO] [stderr]    Compiling wasm-bindgen-futures v0.4.34
[INFO] [stderr]    Compiling web-sys v0.3.61
[INFO] [stderr]    Compiling kobold v0.5.0 (https://github.com/maciejhirsz/kobold.git?rev=53eacf69d2ea3f25a47e58a3ccd11dcaf73d48bf#53eacf69)
[INFO] [stderr]    Compiling kobold_qr v0.5.0 (https://github.com/maciejhirsz/kobold.git?rev=53eacf69d2ea3f25a47e58a3ccd11dcaf73d48bf#53eacf69)
[INFO] [stderr]    Compiling kobold-test v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 17.68s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: wasm-bindgen v0.2.84
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 1`
[INFO] running `Command { std: "docker" "inspect" "a0cb408707c6fc1c09a4cd7d9cb7409c40fd7477cecbc4fe8a9cba30203bba95", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a0cb408707c6fc1c09a4cd7d9cb7409c40fd7477cecbc4fe8a9cba30203bba95", kill_on_drop: false }`
[INFO] [stdout] a0cb408707c6fc1c09a4cd7d9cb7409c40fd7477cecbc4fe8a9cba30203bba95
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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:dff56e7819e73ed36160586b3445e93eb0be776c16704aeeded9c3fb668b2384" "/opt/rustwide/cargo-home/bin/cargo" "+1.80.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 319dde46e9766e68338c54e76ff6ce2ed7b18d5e78c92acd665a0952c8ba4c06
[INFO] running `Command { std: "docker" "start" "-a" "319dde46e9766e68338c54e76ff6ce2ed7b18d5e78c92acd665a0952c8ba4c06", kill_on_drop: false }`
[INFO] [stderr]    Compiling kobold-test v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.44s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: wasm-bindgen v0.2.84
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 1`
[INFO] running `Command { std: "docker" "inspect" "319dde46e9766e68338c54e76ff6ce2ed7b18d5e78c92acd665a0952c8ba4c06", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "319dde46e9766e68338c54e76ff6ce2ed7b18d5e78c92acd665a0952c8ba4c06", kill_on_drop: false }`
[INFO] [stdout] 319dde46e9766e68338c54e76ff6ce2ed7b18d5e78c92acd665a0952c8ba4c06
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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:dff56e7819e73ed36160586b3445e93eb0be776c16704aeeded9c3fb668b2384" "/opt/rustwide/cargo-home/bin/cargo" "+1.80.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 384865cf234d85efe6e82f0a18771c67535aab41a5a12ff152193ce8b856b559
[INFO] running `Command { std: "docker" "start" "-a" "384865cf234d85efe6e82f0a18771c67535aab41a5a12ff152193ce8b856b559", kill_on_drop: false }`
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.12s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: wasm-bindgen v0.2.84
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 1`
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/main-131f9c9ba0ea0a78)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "384865cf234d85efe6e82f0a18771c67535aab41a5a12ff152193ce8b856b559", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "384865cf234d85efe6e82f0a18771c67535aab41a5a12ff152193ce8b856b559", kill_on_drop: false }`
[INFO] [stdout] 384865cf234d85efe6e82f0a18771c67535aab41a5a12ff152193ce8b856b559
[INFO] testing ltfschoen/kobold-test against beta-2024-07-26 for beta-1.81-2
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fltfschoen%2Fkobold-test" "/workspace/builds/worker-7-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/ltfschoen/kobold-test on toolchain beta-2024-07-26
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2024-07-26" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-7-tc2/source/rust-toolchain.toml
[INFO] started tweaking git repo https://github.com/ltfschoen/kobold-test
[INFO] finished tweaking git repo https://github.com/ltfschoen/kobold-test
[INFO] tweaked toml for git repo https://github.com/ltfschoen/kobold-test written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/ltfschoen/kobold-test 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" "+beta-2024-07-26" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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:dff56e7819e73ed36160586b3445e93eb0be776c16704aeeded9c3fb668b2384" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2024-07-26" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8bc06ac5c01f537f991133d8d966c66294d1cca672a88bf29174535c99ecba03
[INFO] running `Command { std: "docker" "start" "-a" "8bc06ac5c01f537f991133d8d966c66294d1cca672a88bf29174535c99ecba03", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8bc06ac5c01f537f991133d8d966c66294d1cca672a88bf29174535c99ecba03", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8bc06ac5c01f537f991133d8d966c66294d1cca672a88bf29174535c99ecba03", kill_on_drop: false }`
[INFO] [stdout] 8bc06ac5c01f537f991133d8d966c66294d1cca672a88bf29174535c99ecba03
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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=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:dff56e7819e73ed36160586b3445e93eb0be776c16704aeeded9c3fb668b2384" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2024-07-26" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 742c6fb72a0bb77535396e4096a5a42b421b7635c91f8d2c9bcd5cc62652b07c
[INFO] running `Command { std: "docker" "start" "-a" "742c6fb72a0bb77535396e4096a5a42b421b7635c91f8d2c9bcd5cc62652b07c", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.52
[INFO] [stderr]    Compiling unicode-ident v1.0.8
[INFO] [stderr]    Compiling quote v1.0.26
[INFO] [stderr]    Compiling log v0.4.17
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling wasm-bindgen-shared v0.2.84
[INFO] [stderr]    Compiling cfg-if v1.0.0
[INFO] [stderr]    Compiling bumpalo v3.12.0
[INFO] [stderr]    Compiling once_cell v1.17.1
[INFO] [stderr]    Compiling wasm-bindgen v0.2.84
[INFO] [stderr]    Compiling fnv v1.0.7
[INFO] [stderr]    Compiling arrayvec v0.7.2
[INFO] [stderr]    Compiling beef v0.5.2
[INFO] [stderr]    Compiling itoa v1.0.6
[INFO] [stderr]    Compiling ryu v1.0.13
[INFO] [stderr]    Compiling fast_qr v0.8.4
[INFO] [stderr]    Compiling kobold_macros v0.5.0 (https://github.com/maciejhirsz/kobold.git?rev=53eacf69d2ea3f25a47e58a3ccd11dcaf73d48bf#53eacf69)
[INFO] [stderr]    Compiling wasm-bindgen-backend v0.2.84
[INFO] [stderr]    Compiling wasm-bindgen-macro-support v0.2.84
[INFO] [stderr]    Compiling wasm-bindgen-macro v0.2.84
[INFO] [stderr]    Compiling js-sys v0.3.61
[INFO] [stderr]    Compiling console_error_panic_hook v0.1.7
[INFO] [stderr]    Compiling wasm-bindgen-futures v0.4.34
[INFO] [stderr]    Compiling web-sys v0.3.61
[INFO] [stderr]    Compiling kobold v0.5.0 (https://github.com/maciejhirsz/kobold.git?rev=53eacf69d2ea3f25a47e58a3ccd11dcaf73d48bf#53eacf69)
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]    --> /opt/rustwide/cargo-home/git/checkouts/kobold-39364116f2711f0d/53eacf6/crates/kobold/src/stateful/hook.rs:167:13
[INFO] [stdout]     |
[INFO] [stdout] 167 |             cb as UnsafeCallback<S>
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^ expected `event::Event<T, E>`, found `web_sys::Event`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `web_sys::Event` and `event::Event<T, E>` have similar names, but are actually distinct types
[INFO] [stdout] note: `web_sys::Event` is defined in crate `web_sys`
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/web-sys-0.3.61/src/features/gen_Event.rs:4:1
[INFO] [stdout]     |
[INFO] [stdout] 4   | #[wasm_bindgen]
[INFO] [stdout]     | ^^^^^^^^^^^^^^^
[INFO] [stdout] note: `event::Event<T, E>` is defined in the current crate
[INFO] [stdout]    --> /opt/rustwide/cargo-home/git/checkouts/kobold-39364116f2711f0d/53eacf6/crates/kobold/src/event.rs:12:1
[INFO] [stdout]     |
[INFO] [stdout] 12  | pub struct Event<T = HtmlElement, E = web_sys::Event> {
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     = help: `dyn CallbackFn<S, web_sys::Event>` implements `CallbackFn` so you could box the found value and coerce it to the trait object `Box<dyn CallbackFn>`, you will have to change the expected type as well
[INFO] [stdout]     = note: this error originates in the attribute macro `wasm_bindgen` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]    --> /opt/rustwide/cargo-home/git/checkouts/kobold-39364116f2711f0d/53eacf6/crates/kobold/src/stateful/hook.rs:197:13
[INFO] [stdout]     |
[INFO] [stdout] 197 |             cb as UnsafeAsyncCallback<S>
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ expected `event::Event<T, E>`, found `web_sys::Event`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `web_sys::Event` and `event::Event<T, E>` have similar names, but are actually distinct types
[INFO] [stdout] note: `web_sys::Event` is defined in crate `web_sys`
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/web-sys-0.3.61/src/features/gen_Event.rs:4:1
[INFO] [stdout]     |
[INFO] [stdout] 4   | #[wasm_bindgen]
[INFO] [stdout]     | ^^^^^^^^^^^^^^^
[INFO] [stdout] note: `event::Event<T, E>` is defined in the current crate
[INFO] [stdout]    --> /opt/rustwide/cargo-home/git/checkouts/kobold-39364116f2711f0d/53eacf6/crates/kobold/src/event.rs:12:1
[INFO] [stdout]     |
[INFO] [stdout] 12  | pub struct Event<T = HtmlElement, E = web_sys::Event> {
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     = help: `dyn AsyncCallbackFn<S, web_sys::Event>` implements `AsyncCallbackFn` so you could box the found value and coerce it to the trait object `Box<dyn AsyncCallbackFn>`, you will have to change the expected type as well
[INFO] [stdout]     = note: this error originates in the attribute macro `wasm_bindgen` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 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 `kobold` (lib) due to 3 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "742c6fb72a0bb77535396e4096a5a42b421b7635c91f8d2c9bcd5cc62652b07c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "742c6fb72a0bb77535396e4096a5a42b421b7635c91f8d2c9bcd5cc62652b07c", kill_on_drop: false }`
[INFO] [stdout] 742c6fb72a0bb77535396e4096a5a42b421b7635c91f8d2c9bcd5cc62652b07c