TEST: Use twox-hash for testing nostd build

Uses shepmaster's hash crate for testing, it's simple and no-std, tip by cuviper.

Author: bluss

test-nostd/Cargo.toml

@@ -3,10 +3,11 @@ name = "test-nostd"
 version = "0.1.0"
 authors = ["bluss"]
 publish = false
+edition = "2018"
 
 [dependencies]
 indexmap = { path = ".." }
 # no-std compatible hasher
-ahash = "0.2"
+twox-hash = { version = "1.5", default-features = false }
 
 [dev-dependencies]

test-nostd/src/lib.rs

@@ -1,12 +1,11 @@
 #![no_std]
 
-extern crate indexmap;
-extern crate ahash;
-
 use indexmap::IndexMap;
 use indexmap::IndexSet;
-type Map<K, V> = IndexMap<K, V, ahash::ABuildHasher>;
-type Set<T> = IndexSet<T, ahash::ABuildHasher>;
+use core::hash::BuildHasherDefault;
+use twox_hash::XxHash64;
+type Map<K, V> = IndexMap<K, V, BuildHasherDefault<XxHash64>>;
+type Set<T> = IndexSet<T, BuildHasherDefault<XxHash64>>;
 
 use core::iter::FromIterator;