diff --git a/src/test/run-pass/rfc-2151-raw-identifiers/attr.rs b/src/test/run-pass/rfc-2151-raw-identifiers/attr.rs
index 6cea75cf1d11e..3566babaf4cbd 100644
--- a/src/test/run-pass/rfc-2151-raw-identifiers/attr.rs
+++ b/src/test/run-pass/rfc-2151-raw-identifiers/attr.rs
@@ -8,6 +8,8 @@
 // option. This file may not be copied, modified, or distributed
 // except according to those terms.
 
+// ignore-pretty
+
 #![feature(raw_identifiers)]
 
 use std::mem;
diff --git a/src/test/run-pass/rfc-2151-raw-identifiers/basic.rs b/src/test/run-pass/rfc-2151-raw-identifiers/basic.rs
index 5d495c4e9e557..bd1f52a9b24e0 100644
--- a/src/test/run-pass/rfc-2151-raw-identifiers/basic.rs
+++ b/src/test/run-pass/rfc-2151-raw-identifiers/basic.rs
@@ -8,6 +8,8 @@
 // option. This file may not be copied, modified, or distributed
 // except according to those terms.
 
+// ignore-pretty
+
 #![feature(raw_identifiers)]
 
 fn r#fn(r#match: u32) -> u32 {
diff --git a/src/test/run-pass/rfc-2151-raw-identifiers/items.rs b/src/test/run-pass/rfc-2151-raw-identifiers/items.rs
index 256bd263d38d4..5fdc13df8dcb2 100644
--- a/src/test/run-pass/rfc-2151-raw-identifiers/items.rs
+++ b/src/test/run-pass/rfc-2151-raw-identifiers/items.rs
@@ -8,6 +8,8 @@
 // option. This file may not be copied, modified, or distributed
 // except according to those terms.
 
+// ignore-pretty
+
 #![feature(raw_identifiers)]
 
 #[derive(Debug, PartialEq, Eq)]
diff --git a/src/test/run-pass/rfc-2151-raw-identifiers/macros.rs b/src/test/run-pass/rfc-2151-raw-identifiers/macros.rs
index 4bd16ded52fbd..82d44c57e181b 100644
--- a/src/test/run-pass/rfc-2151-raw-identifiers/macros.rs
+++ b/src/test/run-pass/rfc-2151-raw-identifiers/macros.rs
@@ -8,6 +8,8 @@
 // option. This file may not be copied, modified, or distributed
 // except according to those terms.
 
+// ignore-pretty
+
 #![feature(decl_macro)]
 #![feature(raw_identifiers)]
 
diff --git a/src/tools/compiletest/src/runtest.rs b/src/tools/compiletest/src/runtest.rs
index 93b1b1f08e63f..e826c5366a81f 100644
--- a/src/tools/compiletest/src/runtest.rs
+++ b/src/tools/compiletest/src/runtest.rs
@@ -2426,7 +2426,7 @@ impl<'test> TestCx<'test> {
         // compiler flags set in the test cases:
         cmd.env_remove("RUSTFLAGS");
 
-        if self.config.target.contains("msvc") {
+        if self.config.target.contains("msvc") && self.config.cc != "" {
             // We need to pass a path to `lib.exe`, so assume that `cc` is `cl.exe`
             // and that `lib.exe` lives next to it.
             let lib = Path::new(&self.config.cc).parent().unwrap().join("lib.exe");