remove allow_fail test flag

compiler/rustc_builtin_macros/src/test.rs

@@ -252,11 +252,6 @@ pub fn expand_test_or_bench(
                                         "ignore",
                                         cx.expr_bool(sp, should_ignore(&cx.sess, &item)),
                                     ),
-                                    // allow_fail: true | false
-                                    field(
-                                        "allow_fail",
-                                        cx.expr_bool(sp, should_fail(&cx.sess, &item)),
-                                    ),
                                     // compile_fail: true | false
                                     field("compile_fail", cx.expr_bool(sp, false)),
                                     // no_run: true | false
@@ -359,10 +354,6 @@ fn should_ignore(sess: &Session, i: &ast::Item) -> bool {
     sess.contains_name(&i.attrs, sym::ignore)
 }
 
-fn should_fail(sess: &Session, i: &ast::Item) -> bool {
-    sess.contains_name(&i.attrs, sym::allow_fail)
-}
-
 fn should_panic(cx: &ExtCtxt<'_>, i: &ast::Item) -> ShouldPanic {
     match cx.sess.find_by_name(&i.attrs, sym::should_panic) {
         Some(attr) => {

compiler/rustc_feature/src/active.rs

@@ -274,8 +274,6 @@ declare_features! (
     (incomplete, adt_const_params, "1.56.0", Some(44580), None),
     /// Allows defining an `#[alloc_error_handler]`.
     (active, alloc_error_handler, "1.29.0", Some(51540), None),
-    /// Allows a test to fail without failing the whole suite.
-    (active, allow_fail, "1.19.0", Some(46488), None),
     /// Allows explicit discriminants on non-unit enum variants.
     (active, arbitrary_enum_discriminant, "1.37.0", Some(60553), None),
     /// Allows trait methods with arbitrary self types.

compiler/rustc_feature/src/builtin_attrs.rs

@@ -403,7 +403,6 @@ pub const BUILTIN_ATTRIBUTES: &[BuiltinAttribute] = &[
     },
 
     // Testing:
-    gated!(allow_fail, Normal, template!(Word), WarnFollowing, experimental!(allow_fail)),
     gated!(
         test_runner, CrateLevel, template!(List: "path"), ErrorFollowing, custom_test_frameworks,
         "custom test frameworks are an unstable feature",

compiler/rustc_feature/src/removed.rs

@@ -48,6 +48,8 @@ declare_features! (
     (removed, advanced_slice_patterns, "1.0.0", Some(62254), None,
      Some("merged into `#![feature(slice_patterns)]`")),
     (removed, allocator, "1.0.0", None, None, None),
+    /// Allows a test to fail without failing the whole suite.
+    (removed, allow_fail, "1.19.0", Some(46488), None, Some("removed due to no clear use cases")),
     (removed, await_macro, "1.38.0", Some(50547), None,
      Some("subsumed by `.await` syntax")),
     /// Allows comparing raw pointers during const eval.

library/test/src/console.rs

@@ -47,7 +47,6 @@ pub struct ConsoleTestState {
     pub passed: usize,
     pub failed: usize,
     pub ignored: usize,
-    pub allowed_fail: usize,
     pub filtered_out: usize,
     pub measured: usize,
     pub exec_time: Option<TestSuiteExecTime>,
@@ -71,7 +70,6 @@ impl ConsoleTestState {
             passed: 0,
             failed: 0,
             ignored: 0,
-            allowed_fail: 0,
             filtered_out: 0,
             measured: 0,
             exec_time: None,
@@ -112,7 +110,6 @@ impl ConsoleTestState {
                     TestResult::TrFailed => "failed".to_owned(),
                     TestResult::TrFailedMsg(ref msg) => format!("failed: {}", msg),
                     TestResult::TrIgnored => "ignored".to_owned(),
-                    TestResult::TrAllowedFail => "failed (allowed)".to_owned(),
                     TestResult::TrBench(ref bs) => fmt_bench_samples(bs),
                     TestResult::TrTimedFail => "failed (time limit exceeded)".to_owned(),
                 },
@@ -126,7 +123,7 @@ impl ConsoleTestState {
     }
 
     fn current_test_count(&self) -> usize {
-        self.passed + self.failed + self.ignored + self.measured + self.allowed_fail
+        self.passed + self.failed + self.ignored + self.measured
     }
 }
 
@@ -191,7 +188,6 @@ fn handle_test_result(st: &mut ConsoleTestState, completed_test: CompletedTest)
             st.not_failures.push((test, stdout));
         }
         TestResult::TrIgnored => st.ignored += 1,
-        TestResult::TrAllowedFail => st.allowed_fail += 1,
         TestResult::TrBench(bs) => {
             st.metrics.insert_metric(
                 test.name.as_slice(),

library/test/src/formatters/json.rs

@@ -124,15 +124,6 @@ impl<T: Write> OutputFormatter for JsonFormatter<T> {
                 self.write_event("test", desc.name.as_slice(), "ignored", exec_time, stdout, None)
             }
 
-            TestResult::TrAllowedFail => self.write_event(
-                "test",
-                desc.name.as_slice(),
-                "allowed_failure",
-                exec_time,
-                stdout,
-                None,
-            ),
-
             TestResult::TrBench(ref bs) => {
                 let median = bs.ns_iter_summ.median as usize;
                 let deviation = (bs.ns_iter_summ.max - bs.ns_iter_summ.min) as usize;
@@ -172,14 +163,12 @@ impl<T: Write> OutputFormatter for JsonFormatter<T> {
              \"event\": \"{}\", \
              \"passed\": {}, \
              \"failed\": {}, \
-             \"allowed_fail\": {}, \
              \"ignored\": {}, \
              \"measured\": {}, \
              \"filtered_out\": {}",
             if state.failed == 0 { "ok" } else { "failed" },
             state.passed,
-            state.failed + state.allowed_fail,
-            state.allowed_fail,
+            state.failed,
             state.ignored,
             state.measured,
             state.filtered_out,

library/test/src/formatters/junit.rs

@@ -122,7 +122,7 @@ impl<T: Write> OutputFormatter for JunitFormatter<T> {
                     ))?;
                 }
 
-                TestResult::TrOk | TestResult::TrAllowedFail => {
+                TestResult::TrOk => {
                     self.write_message(&*format!(
                         "<testcase classname=\"{}\" \
                          name=\"{}\" time=\"{}\"/>",

library/test/src/formatters/pretty.rs

@@ -49,10 +49,6 @@ impl<T: Write> PrettyFormatter<T> {
         self.write_short_result("ignored", term::color::YELLOW)
     }
 
-    pub fn write_allowed_fail(&mut self) -> io::Result<()> {
-        self.write_short_result("FAILED (allowed)", term::color::YELLOW)
-    }
-
     pub fn write_time_failed(&mut self) -> io::Result<()> {
         self.write_short_result("FAILED (time limit exceeded)", term::color::RED)
     }
@@ -219,7 +215,6 @@ impl<T: Write> OutputFormatter for PrettyFormatter<T> {
             TestResult::TrOk => self.write_ok()?,
             TestResult::TrFailed | TestResult::TrFailedMsg(_) => self.write_failed()?,
             TestResult::TrIgnored => self.write_ignored()?,
-            TestResult::TrAllowedFail => self.write_allowed_fail()?,
             TestResult::TrBench(ref bs) => {
                 self.write_bench()?;
                 self.write_plain(&format!(": {}", fmt_bench_samples(bs)))?;
@@ -263,22 +258,10 @@ impl<T: Write> OutputFormatter for PrettyFormatter<T> {
             self.write_pretty("FAILED", term::color::RED)?;
         }
 
-        let s = if state.allowed_fail > 0 {
-            format!(
-                ". {} passed; {} failed ({} allowed); {} ignored; {} measured; {} filtered out",
-                state.passed,
-                state.failed + state.allowed_fail,
-                state.allowed_fail,
-                state.ignored,
-                state.measured,
-                state.filtered_out
-            )
-        } else {
-            format!(
-                ". {} passed; {} failed; {} ignored; {} measured; {} filtered out",
-                state.passed, state.failed, state.ignored, state.measured, state.filtered_out
-            )
-        };
+        let s = format!(
+            ". {} passed; {} failed; {} ignored; {} measured; {} filtered out",
+            state.passed, state.failed, state.ignored, state.measured, state.filtered_out
+        );
 
         self.write_plain(&s)?;
 

library/test/src/formatters/terse.rs

@@ -54,10 +54,6 @@ impl<T: Write> TerseFormatter<T> {
         self.write_short_result("i", term::color::YELLOW)
     }
 
-    pub fn write_allowed_fail(&mut self) -> io::Result<()> {
-        self.write_short_result("a", term::color::YELLOW)
-    }
-
     pub fn write_bench(&mut self) -> io::Result<()> {
         self.write_pretty("bench", term::color::CYAN)
     }
@@ -207,7 +203,6 @@ impl<T: Write> OutputFormatter for TerseFormatter<T> {
                 self.write_failed()
             }
             TestResult::TrIgnored => self.write_ignored(),
-            TestResult::TrAllowedFail => self.write_allowed_fail(),
             TestResult::TrBench(ref bs) => {
                 if self.is_multithreaded {
                     self.write_test_name(desc)?;
@@ -244,22 +239,10 @@ impl<T: Write> OutputFormatter for TerseFormatter<T> {
             self.write_pretty("FAILED", term::color::RED)?;
         }
 
-        let s = if state.allowed_fail > 0 {
-            format!(
-                ". {} passed; {} failed ({} allowed); {} ignored; {} measured; {} filtered out",
-                state.passed,
-                state.failed + state.allowed_fail,
-                state.allowed_fail,
-                state.ignored,
-                state.measured,
-                state.filtered_out
-            )
-        } else {
-            format!(
-                ". {} passed; {} failed; {} ignored; {} measured; {} filtered out",
-                state.passed, state.failed, state.ignored, state.measured, state.filtered_out
-            )
-        };
+        let s = format!(
+            ". {} passed; {} failed; {} ignored; {} measured; {} filtered out",
+            state.passed, state.failed, state.ignored, state.measured, state.filtered_out
+        );
 
         self.write_plain(&s)?;
 

library/test/src/test_result.rs

@@ -19,7 +19,6 @@ pub enum TestResult {
     TrFailed,
     TrFailedMsg(String),
     TrIgnored,
-    TrAllowedFail,
     TrBench(BenchSamples),
     TrTimedFail,
 }
@@ -42,8 +41,6 @@ pub fn calc_result<'a>(
 
             if maybe_panic_str.map(|e| e.contains(msg)).unwrap_or(false) {
                 TestResult::TrOk
-            } else if desc.allow_fail {
-                TestResult::TrAllowedFail
             } else if let Some(panic_str) = maybe_panic_str {
                 TestResult::TrFailedMsg(format!(
                     r#"panic did not contain expected string
@@ -64,7 +61,6 @@ pub fn calc_result<'a>(
         (&ShouldPanic::Yes, Ok(())) | (&ShouldPanic::YesWithMessage(_), Ok(())) => {
             TestResult::TrFailedMsg("test did not panic as expected".to_string())
         }
-        _ if desc.allow_fail => TestResult::TrAllowedFail,
         _ => TestResult::TrFailed,
     };
 
@@ -90,11 +86,10 @@ pub fn get_result_from_exit_code(
     time_opts: &Option<time::TestTimeOptions>,
     exec_time: &Option<time::TestExecTime>,
 ) -> TestResult {
-    let result = match (desc.allow_fail, code) {
-        (_, TR_OK) => TestResult::TrOk,
-        (true, TR_FAILED) => TestResult::TrAllowedFail,
-        (false, TR_FAILED) => TestResult::TrFailed,
-        (_, _) => TestResult::TrFailedMsg(format!("got unexpected return code {}", code)),
+    let result = match code {
+        TR_OK => TestResult::TrOk,
+        TR_FAILED => TestResult::TrFailed,
+        _ => TestResult::TrFailedMsg(format!("got unexpected return code {}", code)),
     };
 
     // If test is already failed (or allowed to fail), do not change the result.