diff --git b/src/lib.rs a/src/lib.rs | |
index 53bee07..923d672 100644 | |
--- b/src/lib.rs | |
+++ a/src/lib.rs | |
@@ -45,9 +45,10 @@ | |
//! is that after it is initialized, it can't be modified. | |
+// ANDROID: Unconditionally use std to allow building as a dylib. | |
#[cfg(not(test))] | |
#[macro_use] | |
-extern crate core as std; | |
+extern crate std; | |
#[cfg(feature = "serde")] | |
extern crate serde; | |