Workaround rust-lang/rust#23157 by explictly importing Word.

marmistrz · marmistrz · commit 894e958e471b · 2017-07-31T11:26:31.000+02:00
diff --git a/src/sys/ptrace.rs b/src/sys/ptrace.rs
@@ -268,7 +268,7 @@ impl TraceCommand for ::std::process::Command {
 
 #[cfg(test)]
 mod tests {
-    use super::*;
+    use super::Word;
 
     #[test]
     fn test_types() {
