Normalized paths in stderr files

[winksaville]

I spent a little time looking at why when I run TRYBUILD=overwrite carto test the *.stderr files do not have $DIR/xxx in the output. My conclusion is the compiler use to include the $DIR/xxx output, but now outputs the actual path.

You can see that in this change on trybuild the stderr test files were updated and they do not have the $DIR/xxx:

wink@3900x 22-05-18T00:16:29.992Z:~/prgs/rust/clones/dtolnay-trybuild (master)
$ git diff 6cbc5a2843a66dfe934479cf2cf31afbe4b4dbb3^ 6cbc5a2843a66dfe934479cf2cf31afbe4b4dbb3
diff --git a/tests/ui/compile-fail-2.stderr b/tests/ui/compile-fail-2.stderr
index a59ae39..daa33d4 100644
--- a/tests/ui/compile-fail-2.stderr
+++ b/tests/ui/compile-fail-2.stderr
@@ -1,5 +1,5 @@
 error: ERROR
- --> $DIR/compile-fail-2.rs:1:1
+ --> tests/ui/compile-fail-2.rs:1:1
   |
 1 | compile_error!("ERROR");
   | ^^^^^^^^^^^^^^^^^^^^^^^^
diff --git a/tests/ui/compile-fail-3.stderr b/tests/ui/compile-fail-3.stderr
index 27619cf..7fc2291 100644
--- a/tests/ui/compile-fail-3.stderr
+++ b/tests/ui/compile-fail-3.stderr
@@ -1,5 +1,5 @@
 error[E0277]: `*mut _` cannot be shared between threads safely
-   --> $DIR/compile-fail-3.rs:7:5
+   --> tests/ui/compile-fail-3.rs:7:5
     |
 7   |     thread::spawn(|| {
     |     ^^^^^^^^^^^^^ `*mut _` cannot be shared between threads safely
wink@3900x 22-05-18T00:16:44.332Z:~/prgs/rust/clones/dtolnay-trybuild (master)

So my suggestion is that in the future we don't manually add the $DIR/ and instead use the generated files as is. If you'd like I can create another PR with the those unmodified files.

[japaric]

thanks for the report. I'd like to keep the content of this repo in line with the content of the blog post and not modify either so, I have pinned the compiler version and dependencies in e431fcd . This way others should be able to reproduce the results regardless of what their default toolchain is.