style: Rust comment fixes and One grouping

Author: Reisen

program/rust/src/lib.rs

@@ -1,6 +1,8 @@
 #![deny(warnings)]
 // Allow non upper case globals from C
 #![allow(non_upper_case_globals)]
+#![allow(incomplete_features)]
+#![feature(adt_const_params)]
 
 mod c_oracle_header;
 mod deserialize;

program/rust/src/tests/pyth_simulator.rs

@@ -37,6 +37,7 @@ use {
         system_program,
     },
     solana_program_test::{
+        find_file,
         read_file,
         BanksClient,
         BanksClientError,