check rust programs (#4688)

programs/bpf/rust/alloc/src/lib.rs

@@ -1,5 +1,6 @@
 //! @brief Example Rust-based BPF program that test dynamic memory allocation
 #![no_std]
+#![allow(unused_attributes)]
 
 #[macro_use]
 extern crate alloc;
@@ -52,7 +53,7 @@ pub extern "C" fn entrypoint(_input: *mut u8) -> bool {
         for i in 0..ITERS {
             assert_eq!(*ptr.add(i as usize), i as u8);
         }
-        sol_log_64(0x3, 0, 0, 0, *ptr.add(42) as u64);
+        sol_log_64(0x3, 0, 0, 0, u64::from(*ptr.add(42)));
         assert_eq!(*ptr.add(42), 42);
         alloc::alloc::dealloc(ptr, layout);
     }

programs/bpf/rust/dep_crate/src/lib.rs

@@ -1,6 +1,7 @@
 //! @brief Example Rust-based BPF program tests dependent crates
 
 #![no_std]
+#![allow(unused_attributes)]
 
 extern crate solana_sdk_bpf_utils;
 

programs/bpf/rust/iter/src/lib.rs

@@ -1,6 +1,7 @@
 //! @brief Example Rust-based BPF program tests loop iteration
 
 #![no_std]
+#![allow(unused_attributes)]
 
 extern crate solana_sdk_bpf_utils;
 

programs/bpf/rust/many_args/src/lib.rs

@@ -1,6 +1,7 @@
 //! @brief Example Rust-based BPF program tests loop iteration
 
 #![no_std]
+#![allow(unused_attributes)]
 
 mod helper;
 

programs/bpf/rust/noop/src/lib.rs

@@ -1,6 +1,7 @@
 //! @brief Example Rust-based BPF program that prints out the parameters passed to it
 
 #![no_std]
+#![allow(unreachable_code)]
 
 extern crate solana_sdk_bpf_utils;
 
@@ -37,7 +38,7 @@ fn process_instruction(
     {
         // Test - arch config
         #[cfg(not(target_arch = "bpf"))]
-        assert!(false);
+        panic!();
     }
 
     {

programs/bpf/rust/panic/src/lib.rs

@@ -1,6 +1,7 @@
 //! @brief Example Rust-based BPF program that panics
 
 #![no_std]
+#![allow(unused_attributes)]
 
 extern crate solana_sdk_bpf_utils;
 

programs/bpf/rust/tick_height/src/lib.rs

@@ -21,7 +21,7 @@ fn process_instruction(
         let tick_height = LittleEndian::read_u64(k.data);
         assert_eq!(10u64, tick_height);
         sol_log("Success");
-        return true
+        return true;
     }
     panic!();
 }