remove some warnings

src/compiletest/header.rs

@@ -82,14 +82,13 @@ pub fn load_props(testfile: &Path) -> TestProps {
 }
 
 pub fn is_test_ignored(config: config, testfile: &Path) -> bool {
-    let mut found = false;
     for iter_header(testfile) |ln| {
         if parse_name_directive(ln, ~"xfail-test") { return true; }
         if parse_name_directive(ln, xfail_target()) { return true; }
         if config.mode == common::mode_pretty &&
            parse_name_directive(ln, ~"xfail-pretty") { return true; }
     };
-    return found;
+    return true;
 
     fn xfail_target() -> ~str {
         ~"xfail-" + str::from_slice(os::SYSNAME)

src/compiletest/runtest.rs

@@ -106,7 +106,7 @@ fn run_rpass_test(config: config, props: TestProps, testfile: &Path) {
             fatal_ProcRes(~"test run failed!", ProcRes);
         }
     } else {
-        let mut ProcRes = jit_test(config, props, testfile);
+        let ProcRes = jit_test(config, props, testfile);
 
         if ProcRes.status != 0 { fatal_ProcRes(~"jit failed!", ProcRes); }
     }

src/libsyntax/ast_util.rs

@@ -11,7 +11,7 @@
 use ast::*;
 use ast;
 use ast_util;
-use codemap::{span, dummy_sp, spanned};
+use codemap::{span, spanned};
 use parse::token;
 use visit;
 use opt_vec;

src/libsyntax/parse/mod.rs

@@ -24,7 +24,7 @@ use parse::token::{ident_interner, mk_ident_interner};
 use core::io;
 use core::option::{None, Option, Some};
 use core::path::Path;
-use core::result::{Err, Ok, Result};
+use core::result::{Err, Ok};
 
 pub mod lexer;
 pub mod parser;