Account some warnings to fix CI

Author: JohnTitor

README.md

@@ -18,7 +18,7 @@ packed_simd = { version = "0.3.4", package = "packed_simd_2" }
 [![Travis-CI Status]][travis] <!-- [![Appveyor Status]][appveyor] --> [![Latest Version]][crates.io] [![docs]][master_docs]
 
 **WARNING**: this crate only supports the most recent nightly Rust toolchain
-and will be superceded by [stdsimd](https://github.com/rust-lang/stdsimd).
+and will be superseded by [stdsimd](https://github.com/rust-lang/stdsimd).
 
 ## Documentation
 

examples/aobench/src/main.rs

@@ -89,6 +89,6 @@ fn main() {
         for a in ALGORITHMS {
             error.push_str(&format!("\n- {}", a));
         }
-        panic!(error);
+        panic!("{}", error);
     }
 }

examples/fannkuch_redux/src/main.rs

@@ -10,7 +10,7 @@ fn run<O: std::io::Write>(o: &mut O, n: usize, alg: usize) {
 fn main() {
     let n: usize =
         std::env::args().nth(1).expect("need one arg").parse().unwrap();
-    assert!(3 <= n && n <= 14, "n = {} is out-of-range [3, 14]", n);
+    assert!((3..=14).contains(&n), "n = {} is out-of-range [3, 14]", n);
     let alg = if let Some(v) = std::env::args().nth(2) {
         v.parse().unwrap()
     } else {