Mismatching versions?

[simbleau]

I keep getting this error:

 Running `wasm-server-runner /Users/simbleau/git/matchbox/target/wasm32-unknown-unknown/debug/simple_example.wasm`
Error: 

it looks like the Rust project used to create this wasm file was linked against
version of wasm-bindgen that uses a different bindgen format than this binary:

  rust wasm file schema version: 0.2.87
     this binary schema version: 0.2.84

Currently the bindgen format is unstable enough that these two schema versions
must exactly match. You can accomplish this by either updating the wasm-bindgen
dependency or this binary.

You should be able to update the wasm-bindgen dependency with:

    cargo update -p wasm-bindgen

or you can update the binary with

    cargo install -f wasm-bindgen-cli

if this warning fails to go away though and you're not sure what to do feel free
to open an issue at https://github.com/rustwasm/wasm-bindgen/issues!

Yet, I've done cargo install wasm-bindgen@0.2.87 --force and the steps listed to no avail.

[Liamolucko]

wasm-server-runner is the culprit here - it seems to be embedding a fixed version of wasm-bindgen-cli-support inside itself, and so updating your system version of the wasm-bindgen CLI has no effect.

Re-running cargo install wasm-server-runner should fix this for the moment, since it's not pinned to a particular version of wasm-bindgen-cli-support and so cargo install will pick the latest version of it to use. You'll have to repeat that every time you update the wasm-bindgen library though, and I don't think there's any good way to downgrade it to an older version of wasm-bindgen-cli-support if you need to.