Stream: git-wasmtime

Topic: wasmtime / issue #14192 `wasi-http` doesn't compile with ...

Wasmtime GitHub notifications bot (Aug 23 2026 at 14:11):

12101111 opened issue #14192:

Test Case

N/A

Steps to Reproduce

• cargo +nightly b -p wasmtime-cli

Expected Results

It should compile.

Actual Results

error[E0283]: type annotations needed
    ╭▸ crates/wasi-http/src/p3/bindings.rs:5:5
    │
  5 │ ┏     wasmtime::component::bindgen!({
  6 │ ┃         path: "src/p3/wit",
  7 │ ┃         world: "wasi:http/service",
  8 │ ┃         imports: {
    ‡ ┃
 29 │ ┃         },
 30 │ ┃     });
    │ ┗━━━━━━┛ cannot infer type
    ╰╴
note: multiple `impl`s or `where` clauses satisfying `_: HostRequestWithStore<T>` found
    ╭▸ crates/wasi-http/src/p3/bindings.rs:5:5
    │
  5 │ ┏     wasmtime::component::bindgen!({
  6 │ ┃         path: "src/p3/wit",
  7 │ ┃         world: "wasi:http/service",
  8 │ ┃         imports: {
    ‡ ┃
 29 │ ┃         },
 30 │ ┃     });
    │ ┗━━━━━━┛
    │
    ⸬  crates/wasi-http/src/p3/host/types.rs:215:1
    │
215 │   impl<T> HostRequestWithStore<T> for WasiHttp {
    │   ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
    ├ note: cannot satisfy `for<'a> <D as HasData>::Data<'a> == _`
    ╰ note: this error originates in the macro `wasmtime::component::bindgen` (in Nightly builds, run with -Z macro-backtrace for more info)

error[E0283]: type annotations needed
    ╭▸ crates/wasi-http/src/p3/bindings.rs:5:5
    │
  5 │ ┏     wasmtime::component::bindgen!({
  6 │ ┃         path: "src/p3/wit",
  7 │ ┃         world: "wasi:http/service",
  8 │ ┃         imports: {
    ‡ ┃
 29 │ ┃         },
 30 │ ┃     });
    │ ┗━━━━━━┛ cannot infer type
    ╰╴
note: multiple `impl`s or `where` clauses satisfying `_: HostResponseWithStore<T>` found
    ╭▸ crates/wasi-http/src/p3/bindings.rs:5:5
    │
  5 │ ┏     wasmtime::component::bindgen!({
  6 │ ┃         path: "src/p3/wit",
  7 │ ┃         world: "wasi:http/service",
  8 │ ┃         imports: {
    ‡ ┃
 29 │ ┃         },
 30 │ ┃     });
    │ ┗━━━━━━┛
    │
    ⸬  crates/wasi-http/src/p3/host/types.rs:473:1
    │
473 │   impl<T> HostResponseWithStore<T> for WasiHttp {
    │   ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
    ╰ note: this error originates in the macro `wasmtime::component::bindgen` (in Nightly builds, run with -Z macro-backtrace for more info)

For more information about this error, try `rustc --explain E0283`.
error: could not compile `wasmtime-wasi-http` (lib) due to 2 previous errors

Versions and Environment

Wasmtime version or commit: e6b33de5139d915a48127fc78b790e2d306cf896

Operating system: Linux/macOS

Architecture: x86_64/arm64

Extra Info

Link to rust tracking issue: https://github.com/rust-lang/rust/issues/160895

Wasmtime GitHub notifications bot (Aug 23 2026 at 14:11):

12101111 added the bug label to Issue #14192.

Wasmtime GitHub notifications bot (Aug 27 2026 at 16:50):

fitzgen closed issue #14192:

Test Case

N/A

Steps to Reproduce

• cargo +nightly b -p wasmtime-cli

Expected Results

It should compile.

Actual Results

error[E0283]: type annotations needed
    ╭▸ crates/wasi-http/src/p3/bindings.rs:5:5
    │
  5 │ ┏     wasmtime::component::bindgen!({
  6 │ ┃         path: "src/p3/wit",
  7 │ ┃         world: "wasi:http/service",
  8 │ ┃         imports: {
    ‡ ┃
 29 │ ┃         },
 30 │ ┃     });
    │ ┗━━━━━━┛ cannot infer type
    ╰╴
note: multiple `impl`s or `where` clauses satisfying `_: HostRequestWithStore<T>` found
    ╭▸ crates/wasi-http/src/p3/bindings.rs:5:5
    │
  5 │ ┏     wasmtime::component::bindgen!({
  6 │ ┃         path: "src/p3/wit",
  7 │ ┃         world: "wasi:http/service",
  8 │ ┃         imports: {
    ‡ ┃
 29 │ ┃         },
 30 │ ┃     });
    │ ┗━━━━━━┛
    │
    ⸬  crates/wasi-http/src/p3/host/types.rs:215:1
    │
215 │   impl<T> HostRequestWithStore<T> for WasiHttp {
    │   ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
    ├ note: cannot satisfy `for<'a> <D as HasData>::Data<'a> == _`
    ╰ note: this error originates in the macro `wasmtime::component::bindgen` (in Nightly builds, run with -Z macro-backtrace for more info)

error[E0283]: type annotations needed
    ╭▸ crates/wasi-http/src/p3/bindings.rs:5:5
    │
  5 │ ┏     wasmtime::component::bindgen!({
  6 │ ┃         path: "src/p3/wit",
  7 │ ┃         world: "wasi:http/service",
  8 │ ┃         imports: {
    ‡ ┃
 29 │ ┃         },
 30 │ ┃     });
    │ ┗━━━━━━┛ cannot infer type
    ╰╴
note: multiple `impl`s or `where` clauses satisfying `_: HostResponseWithStore<T>` found
    ╭▸ crates/wasi-http/src/p3/bindings.rs:5:5
    │
  5 │ ┏     wasmtime::component::bindgen!({
  6 │ ┃         path: "src/p3/wit",
  7 │ ┃         world: "wasi:http/service",
  8 │ ┃         imports: {
    ‡ ┃
 29 │ ┃         },
 30 │ ┃     });
    │ ┗━━━━━━┛
    │
    ⸬  crates/wasi-http/src/p3/host/types.rs:473:1
    │
473 │   impl<T> HostResponseWithStore<T> for WasiHttp {
    │   ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
    ╰ note: this error originates in the macro `wasmtime::component::bindgen` (in Nightly builds, run with -Z macro-backtrace for more info)

For more information about this error, try `rustc --explain E0283`.
error: could not compile `wasmtime-wasi-http` (lib) due to 2 previous errors

Versions and Environment

Wasmtime version or commit: e6b33de5139d915a48127fc78b790e2d306cf896

Operating system: Linux/macOS

Architecture: x86_64/arm64

Extra Info

Link to rust tracking issue: https://github.com/rust-lang/rust/issues/160895

Wasmtime GitHub notifications bot (Aug 27 2026 at 16:50):

fitzgen commented on issue #14192:

Fixed in https://github.com/bytecodealliance/wasmtime/pull/14193

Last updated: Aug 30 2026 at 09:07 UTC