Rollup merge of rust-lang#143504 - RalfJung:compiletest-err, r=jieyouxu

matthiaskrgr · web-flow · commit 097efc07cc13 · 2025-07-06T10:03:24.000+02:00
compiletest: print slightly more information on fs::write failure See [#t-infra > compiletest: panic in dump_output_file: No such file or dire @ 💬](https://rust-lang.zulipchat.com/#narrow/channel/242791-t-infra/topic/compiletest.3A.20panic.20in.20dump_output_file.3A.20No.20such.20file.20or.20dire/near/527294714)
diff --git a/src/tools/compiletest/src/runtest.rs b/src/tools/compiletest/src/runtest.rs
@@ -1924,7 +1924,8 @@ impl<'test> TestCx<'test> {
 
     fn dump_output_file(&self, out: &str, extension: &str) {
         let outfile = self.make_out_name(extension);
-        fs::write(outfile.as_std_path(), out).unwrap();
+        fs::write(outfile.as_std_path(), out)
+            .unwrap_or_else(|err| panic!("failed to write {outfile}: {err:?}"));
     }
 
     /// Creates a filename for output with the given extension.

Original file line number	Diff line number	Diff line change
`@@ -1924,7 +1924,8 @@ impl<'test> TestCx<'test> {`
`1924`	`1924`
`1925`	`1925`	`fn dump_output_file(&self, out: &str, extension: &str) {`
`1926`	`1926`	`let outfile = self.make_out_name(extension);`
`1927`		`- fs::write(outfile.as_std_path(), out).unwrap();`
	`1927`	`+ fs::write(outfile.as_std_path(), out)`
	`1928`	`+ .unwrap_or_else(\|err\| panic!("failed to write {outfile}: {err:?}"));`
`1928`	`1929`	`}`
`1929`	`1930`
`1930`	`1931`	`/// Creates a filename for output with the given extension.`