Function run_jit 

pub fn run_jit(
    compiled: &CompiledContracts,
    cache: &CompileCache,
    spec_id: SpecId,
    cfg: &CfgEnv,
    block: &BlockEnv,
    tx: &TxEnv,
    cache_state: &CacheState,
) -> ExecutionSnapshot

Run a single test case with JIT-compiled functions, returning an execution snapshot.