"unknown file type lib.rmeta" when compiling rust with --target=wasm32-unknown-emscripten

[hoodmane]

xref #92738

When compiling rust as follows:

export RUSTFLAGS="-C link-arg=-s -C link-arg=SIDE_MODULE=1 -C relocation-model=pic -C target-feature=+mutable-globals"
cargo +nightly -Z build-std build --target=wasm32-unknown-emscripten

I get the error

wasm-ld: error: unknown file type: lib.rmeta

See #92738 for more details.

As a workaround, I've been applying the following patch:
pyodide/pyodide@cfafcda/emsdk/patches/0001-fix-up-rust-linker-errors.patch

[hoodmane]

Closed in favor of #17109 which is more specific.