remove wildcard build-dependency

mcginty · mcginty · commit 450278aff220 · 2017-05-18T14:56:18.000+08:00
diff --git a/Cargo.toml b/Cargo.toml
@@ -27,7 +27,7 @@ name = "shoop"
 path = "src/main.rs"
 
 [build-dependencies]
-rustc_version = "*"
+rustc_version = "^0.2"
 
 [dependencies]
 log = "^0.3"
