extend MIR dump with detailed, extra information

src/runtest.rs

@@ -2535,7 +2535,10 @@ impl<'test> TestCx<'test> {
  let mut dumped_file = fs::File::open(output_file.clone()).unwrap();
  let mut dumped_string = String::new();
  dumped_file.read_to_string(&mut dumped_string).unwrap();
- let mut dumped_lines = dumped_string.lines().filter(|l| !l.is_empty());
+ let mut dumped_lines = dumped_string
+ .lines()
+ .map(|l| nocomment_mir_line(l))
+ .filter(|l| !l.is_empty());
  let mut expected_lines = expected_content
  .iter()
  .filter(|&l| {
@@ -2573,7 +2576,7 @@ impl<'test> TestCx<'test> {
  .join("\n");
  panic!(
  "Did not find expected line, error: {}\n\
- Actual Line: {:?}\n\
+ Expected Line: {:?}\n\
  Expected:\n{}\n\
  Actual:\n{}",
  extra_msg,
@@ -2599,7 +2602,9 @@ impl<'test> TestCx<'test> {
  error(
  expected_line,
  format!(
- "Mismatch in lines\nCurrnt block: {}\nExpected Line: {:?}",
+ "Mismatch in lines\n\
+ Current block: {}\n\
+ Actual Line: {:?}",
  start_block_line.unwrap_or("None"),
  dumped_line
  ),