Update Rust n-body build (#294)

examples/n-body/README.md

@@ -31,9 +31,9 @@ Benchmark
 
 ***Environment:***
 - MacBook Pro (Retina, 15-inch, Late 2013)
-- macOS 10.13.5
-- node.js v10.6.0
-- rustc 1.29.0-nightly (254f8796b 2018-07-13)
+- macOS 10.14
+- node.js v10.11.0
+- rustc 1.31.0-nightly (4bd4e4130 2018-10-25)
 
 ***Results:***
 
@@ -42,6 +42,6 @@ Benchmark
 | **AssemblyScript WASM** | **3167**        | **2**          |
 | AssemblyScript ASMJS    | 3633            | 21*            |
 | JavaScript              | 2628            | 5*             |
-| Rust WASM               | 3876            | 15             |
+| Rust WASM               | 3876            | 13             |
 
 ___* unminified___

examples/n-body/build/untouched.wat

@@ -1693,9 +1693,9 @@
         (set_local $19
          ;;@ assembly/index.ts:129:23
          (block $~lib/math/NativeMath.sqrt|inlined.0 (result f64)
-          ;;@ ~lib/math.ts:1031:30
+          ;;@ ~lib/math.ts:1016:30
           (f64.sqrt
-           ;;@ ~lib/math.ts:1031:29
+           ;;@ ~lib/math.ts:1016:29
            (get_local $18)
           )
          )
@@ -2157,9 +2157,9 @@
             )
            )
           )
-          ;;@ ~lib/math.ts:1031:30
+          ;;@ ~lib/math.ts:1016:30
           (f64.sqrt
-           ;;@ ~lib/math.ts:1031:29
+           ;;@ ~lib/math.ts:1016:29
            (get_local $18)
           )
          )

examples/n-body/rust/src/lib.rs

@@ -6,7 +6,7 @@
 use core::intrinsics;
 use core::panic::PanicInfo;
 
-#[panic_implementation]
+#[panic_handler]
 #[no_mangle]
 pub fn panic(_info: &PanicInfo) -> ! {
   unsafe { intrinsics::abort() }