Remove log dependency; make i128_support transitive

Cargo.toml

@@ -20,7 +20,7 @@ nightly = ["i128_support"] # enables all features requiring nightly rust
 std = ["rand_core/std", "libc"] # default feature; without this rand uses libcore
 alloc = []  # enables Vec and Box support without std
 
-i128_support = [] # enables i128 and u128 support
+i128_support = ["rand_core/i128_support"] # enables i128 and u128 support
 
 [dependencies]
 # All deps must not use 'std' by default
@@ -32,9 +32,6 @@ libc = { version = "0.2", optional = true }
 [target.'cfg(windows)'.dependencies]
 winapi = { version = "0.3", features = ["minwindef", "ntsecapi", "profileapi", "winnt"] }
 
-[dev-dependencies]
-log = "0.3.0"
-
 [workspace]
 members = ["rand_core"]
 

src/lib.rs

@@ -253,7 +253,6 @@
 
 #[cfg(feature="std")] extern crate std as core;
 #[cfg(all(feature = "alloc", not(feature="std")))] extern crate alloc;
-#[cfg(test)] #[macro_use] extern crate log;
 
 extern crate rand_core;