Remove some singleton vector appends.

src/compiletest/compiletest.rs

@@ -139,7 +139,7 @@ fn make_tests(config: config) -> [test::test_desc] {
         let file = file;
         #debug("inspecting file %s", file);
         if is_test(config, file) {
-            tests += [make_test(config, file)]
+            vec::push(tests, make_test(config, file))
         }
     }
     ret tests;

src/compiletest/header.rs

@@ -31,7 +31,7 @@ fn load_props(testfile: str) -> test_props {
     let mut pp_exact = option::none;
     for iter_header(testfile) {|ln|
         alt parse_error_pattern(ln) {
-          option::some(ep) { error_patterns += [ep]; }
+          option::some(ep) { vec::push(error_patterns, ep) }
           option::none { }
         };
 
@@ -44,11 +44,11 @@ fn load_props(testfile: str) -> test_props {
         }
 
         option::iter(parse_aux_build(ln)) {|ab|
-            aux_builds += [ab];
+            vec::push(aux_builds, ab);
         }
 
         option::iter(parse_exec_env(ln)) {|ee|
-            exec_env += [ee];
+            vec::push(exec_env, ee);
         }
     };
     ret {

src/compiletest/procsrv.rs

@@ -19,7 +19,7 @@ fn target_env(lib_path: str, prog: str) -> [(str,str)] {
         else { (k,v) }
     };
     if str::ends_with(prog, "rustc.exe") {
-        env += [("RUST_THREADS", "1")]
+        vec::push(env, ("RUST_THREADS", "1"));
     }
     ret env;
 }

src/compiletest/runtest.rs

@@ -104,7 +104,7 @@ fn run_pretty_test(config: config, props: test_props, testfile: str) {
                           procres);
         }
 
-        srcs += [procres.stdout];
+        vec::push(srcs, procres.stdout);
         round += 1;
     }