fix: Allow async functions without send on async trait

Cargo.toml

@@ -58,4 +58,4 @@ js = [
 ]
 
 [patch.crates-io]
-acvm = { git = "https://github.com/noir-lang/acvm", rev = "94d5d20e1eb985cb15eb27556bbe8654172c6a1a" }
+acvm = { git = "https://github.com/noir-lang/acvm", rev = "9f9fc216a6d09ca97352ffd365bfd347e94ad8eb" }

src/acvm_interop/common_reference_string.rs

@@ -3,7 +3,7 @@ use acvm::{acir::circuit::Circuit, async_trait, CommonReferenceString};
 use crate::{composer::Composer, BackendError, Barretenberg};
 
 // TODO(#185): Ensure CRS download works in JS
-#[async_trait]
+#[async_trait(?Send)]
 impl CommonReferenceString for Barretenberg {
     type Error = BackendError;
 

src/composer.rs

@@ -6,7 +6,7 @@ use crate::{crs::CRS, Barretenberg, Error, FIELD_BYTES};
 
 const NUM_RESERVED_GATES: u32 = 4; // this must be >= num_roots_cut_out_of_vanishing_polynomial (found under prover settings in barretenberg)
 
-#[async_trait]
+#[async_trait(?Send)]
 pub(crate) trait Composer {
     fn get_circuit_size(&self, constraint_system: &ConstraintSystem) -> Result<u32, Error>;