diff --git a/pkgs/development/compilers/rustc/head.nix b/pkgs/development/compilers/rustc/head.nix
index 2d450388669..99012ba6d94 100644
--- a/pkgs/development/compilers/rustc/head.nix
+++ b/pkgs/development/compilers/rustc/head.nix
@@ -2,15 +2,15 @@
 callPackage ./makeRustcDerivation.nix {
   shortVersion = "1.0.0-dev";
   isRelease = false;
-  # src rev for master on 2015/03/09
-  srcRev = "91bdf23f504f79ed59617cde3dfebd3d5e39a476";
-  srcSha = "1s1v1q630d88idz331n4m0c3ninzipmvfzmkvdaqqm28wsn69xx7";
-  snapshotHashLinux686 = "50a47ef247610fb089d2c4f24e4b641eb0ba4afb";
-  snapshotHashLinux64 = "ccb20709b3c984f960ddde996451be8ce2268d7c";
-  snapshotHashDarwin686 = "ad263bdeadcf9bf1889426e0c1391a7cf277364e";
-  snapshotHashDarwin64 = "01c8275828042264206b7acd8e86dc719a2f27aa";
-  snapshotDate = "2015-03-07";
-  snapshotRev = "270a677";
+  # src rev for master on 2015/04/13
+  srcRev = "0cf99c3e06e84d20d68da649c888d63c72f33971";
+  srcSha = "0brnzsbxmidjnmvi36sz582k3kw6wk813y2y837zpmyxg9fjah0l";
+  snapshotHashLinux686 = "1ef82402ed16f5a6d2f87a9a62eaa83170e249ec";
+  snapshotHashLinux64 = "ef2154372e97a3cb687897d027fd51c8f2c5f349";
+  snapshotHashDarwin686 = "0310b1a970f2da7e61770fd14dbbbdca3b518234";
+  snapshotHashDarwin64 = "5f35d9c920b8083a7420ef8cf5b00d5ef3085dfa";
+  snapshotDate = "2015-03-27";
+  snapshotRev = "5520801";
   patches = [
     ./patches/head.patch
   ] ++ stdenv.lib.optional stdenv.needsPax ./patches/grsec.patch;
diff --git a/pkgs/development/compilers/rustc/patches/head.patch b/pkgs/development/compilers/rustc/patches/head.patch
index f82f85fb162..3cbf8717cd1 100644
--- a/pkgs/development/compilers/rustc/patches/head.patch
+++ b/pkgs/development/compilers/rustc/patches/head.patch
@@ -41,15 +41,3 @@ index 3087a8e..578448f 100644
 +        None => "@ccPath@".to_string(),
      }
  }
- 
-diff --git a/src/test/run-pass/issue-20797.rs b/src/test/run-pass/issue-20797.rs
-index 049e08d..30b9d2a 100644
---- a/src/test/run-pass/issue-20797.rs
-+++ b/src/test/run-pass/issue-20797.rs
-@@ -90,5 +90,5 @@ impl<S: Strategy> Iterator for Subpaths<S> {
- }
- 
- fn main() {
--  let mut walker: Subpaths<Recursive> = Subpaths::walk(&Path::new("/home")).unwrap();
-+  let mut walker: Subpaths<Recursive> = Subpaths::walk(&Path::new("/tmp")).unwrap();
- }