rollup merge of #20061: aturon/stab-2-vec-slice

Conflicts:
	src/libcollections/slice.rs
	src/libcollections/vec.rs
	src/libstd/sys/windows/os.rs

Author: alexcrichton

src/compiletest/runtest.rs

@@ -32,6 +32,7 @@ use std::io::process;
 use std::io::timer;
 use std::io;
 use std::os;
+use std::iter::repeat;
 use std::str;
 use std::string::String;
 use std::thread::Thread;
@@ -947,8 +948,7 @@ fn check_expected_errors(expected_errors: Vec<errors::ExpectedError> ,
                          proc_res: &ProcRes) {
 
     // true if we found the error in question
-    let mut found_flags = Vec::from_elem(
-        expected_errors.len(), false);
+    let mut found_flags: Vec<_> = repeat(false).take(expected_errors.len()).collect();
 
     if proc_res.status.success() {
         fatal("process did not return an error status");
@@ -1308,7 +1308,7 @@ fn make_run_args(config: &Config, props: &TestProps, testfile: &Path) ->
     // Add the arguments in the run_flags directive
     args.extend(split_maybe_args(&props.run_flags).into_iter());
 
-    let prog = args.remove(0).unwrap();
+    let prog = args.remove(0);
     return ProcArgs {
         prog: prog,
         args: args,

src/liballoc/arc.rs

@@ -96,7 +96,7 @@ use heap::deallocate;
 /// use std::thread::Thread;
 ///
 /// fn main() {
-///     let numbers = Vec::from_fn(100, |i| i as f32);
+///     let numbers: Vec<_> = range(0, 100u32).map(|i| i as f32).collect();
 ///     let shared_numbers = Arc::new(numbers);
 ///
 ///     for _ in range(0u, 10) {