Remove Execs::run_expect_error to avoid rust-lang#14060

crates/cargo-test-support/src/lib.rs

@@ -915,15 +915,6 @@ impl Execs {
         }
     }
 
-    #[track_caller]
-    pub fn run_expect_error(&mut self) {
-        self.ran = true;
-        let p = (&self.process_builder).clone().unwrap();
-        if self.match_process(&p).is_ok() {
-            panic!("test was expected to fail, but succeeded running {}", p);
-        }
-    }
-
     /// Runs the process, checks the expected output, and returns the first
     /// JSON object on stdout.
     #[track_caller]

tests/testsuite/check_cfg.rs

@@ -632,10 +632,11 @@ fn config_invalid_empty() {
         .build();
 
     p.cargo("check")
+        .with_status(101)
         .with_stderr_contains(
             "[..]missing field `level`[..] THIS RANDOM SENTENCE SHOULD FAIL THIS TEST BUT DIDN'T",
         )
-        .run_expect_error();
+        .run();
 }
 
 #[cargo_test(>=1.79, reason = "--check-cfg was stabilized in Rust 1.79")]

tests/testsuite/freshness.rs

@@ -2933,6 +2933,7 @@ fn use_mtime_cache_in_cargo_home() {
     p.change_file("src/lib.rs", "illegal syntax");
     p.cargo("check -v")
         .env("CARGO_HOME", &cargo_home)
+        .with_status(101)
         .with_stderr(
             "\
 [DIRTY] foo v0.5.0 ([CWD]): [..]
@@ -2942,5 +2943,5 @@ fn use_mtime_cache_in_cargo_home() {
 [CHECKING] foo v0.5.0 ([CWD])
 [RUNNING] `rustc --crate-name foo --edition=2015 src/lib.rs [..]",
         )
-        .run_expect_error();
+        .run();
 }

tests/testsuite/help.rs

@@ -147,9 +147,10 @@ fn help_alias() {
     // The `empty-alias` returns an error.
     cargo_process("help empty-alias")
         .env("PATH", Path::new(""))
+        .with_status(101)
         .with_stderr_contains("THIS RANDOM SENTENCE SHOULD FAIL THIS TEST BUT DIDN'T [..] The subcommand 'empty-alias' wasn't recognized [..]",
         )
-        .run_expect_error();
+        .run();
 
     // Because `simple-alias` aliases a subcommand with no arguments, help shows the manpage.
     help_with_man_and_path("", "simple-alias", "build", Path::new(""));