diff --git a/src/tools/compiletest/src/runtest.rs b/src/tools/compiletest/src/runtest.rs
index 9b98e78b15b..759b07abc6e 100644
--- a/src/tools/compiletest/src/runtest.rs
+++ b/src/tools/compiletest/src/runtest.rs
@@ -364,13 +364,16 @@ fn run_cfail_test(&self) {
     fn run_crash_test(&self) {
         let pm = self.pass_mode();
         let proc_res = self.compile_test(WillExecute::No, self.should_emit_metadata(pm));
+        /*
+        eprintln!("{}", proc_res.status);
+        eprintln!("{}", proc_res.stdout);
+        eprintln!("{}", proc_res.stderr);
+        eprintln!("{}", proc_res.cmdline);
+        */
 
         // if a test does not crash, consider it an error
-        if !proc_res.status.success() {
-            match proc_res.status.code() {
-                Some(1 | 0) => self.fatal(&format!("test no longer crashes/triggers ICE! Please annotate it and add it as test to tests/ui or wherever you see fit")),
-                _ => (),
-            }
+        if proc_res.status.success() || matches!(proc_res.status.code(), Some(1 | 0)) {
+            self.fatal(&format!("test no longer crashes/triggers ICE! Please annotate it and add it as test to tests/ui or wherever you see fit"));
         }
     }
 
@@ -2322,9 +2325,6 @@ fn compose_and_run(
         }
 
         let (Output { status, stdout, stderr }, truncated) = self.read2_abbreviated(child);
-        eprintln!("{:?}", status);
-        eprintln!("{}", String::from_utf8_lossy(&stdout).into_owned());
-        eprintln!("{}", String::from_utf8_lossy(&stdout).into_owned());
 
         let result = ProcRes {
             status,
diff --git a/tests/crashes/101557.rs b/tests/crashes/101557.rs
index da32660903e..a0290361ed1 100644
--- a/tests/crashes/101557.rs
+++ b/tests/crashes/101557.rs
@@ -1,4 +1,5 @@
 //@ known-bug: #101557
+//@ compile-flags: -Copt-level=0
 #![feature(generic_const_exprs)]
 use std::marker::PhantomData;
 
diff --git a/tests/crashes/111699.rs b/tests/crashes/111699.rs
index b3d12fb4a0b..5ba17c2aa1a 100644
--- a/tests/crashes/111699.rs
+++ b/tests/crashes/111699.rs
@@ -1,4 +1,6 @@
 //@ known-bug: #111699
+//@ edition:2021
+//@ compile-flags: -Copt-level=0
 #![feature(core_intrinsics)]
 use std::intrinsics::offset;
 
diff --git a/tests/crashes/115435.rs b/tests/crashes/115435.rs
index c846c95961d..c6e749867e8 100644
--- a/tests/crashes/115435.rs
+++ b/tests/crashes/115435.rs
@@ -1,4 +1,6 @@
 //@ known-bug: #115435
+//@ edition:2021
+//@ compile-flags: -Copt-level=0
 trait MyTrait {
     type Target: ?Sized;
 }
diff --git a/tests/crashes/118320.rs b/tests/crashes/118320.rs
index 0f47c923e10..093c58e1c05 100644
--- a/tests/crashes/118320.rs
+++ b/tests/crashes/118320.rs
@@ -1,4 +1,5 @@
 //@ known-bug: #118320
+//@ edition:2021
 #![feature(const_trait_impl, effects, const_closures)]
 
 #[const_trait]
diff --git a/tests/crashes/119692.rs b/tests/crashes/119692.rs
index 3b7457a7abe..2e230f98d81 100644
--- a/tests/crashes/119692.rs
+++ b/tests/crashes/119692.rs
@@ -1,4 +1,5 @@
 //@ known-bug: #119692
+//@ compile-flags: -Copt-level=0
 #![allow(incomplete_features)]
 #![feature(adt_const_params)]
 #![feature(generic_const_exprs)]
diff --git a/tests/crashes/120241-2.rs b/tests/crashes/120241-2.rs
index c7044950211..9c4a3a50293 100644
--- a/tests/crashes/120241-2.rs
+++ b/tests/crashes/120241-2.rs
@@ -1,4 +1,5 @@
 //@ known-bug: #120241
+//@ edition:2021
 #![feature(object_safe_for_dispatch)]
 #![feature(unsized_fn_params)]
 
diff --git a/tests/crashes/120241.rs b/tests/crashes/120241.rs
index f19fdf1a902..f18347a006c 100644
--- a/tests/crashes/120241.rs
+++ b/tests/crashes/120241.rs
@@ -1,4 +1,5 @@
 //@ known-bug: #120241
+//@ edition:2021
 #![feature(object_safe_for_dispatch)]
 
 trait B {
diff --git a/tests/crashes/120482.rs b/tests/crashes/120482.rs
index 1045aeb19c8..6cbc2009c5f 100644
--- a/tests/crashes/120482.rs
+++ b/tests/crashes/120482.rs
@@ -1,4 +1,5 @@
 //@ known-bug: #120482
+//@ edition:2021
 #![feature(object_safe_for_dispatch)]
 
 trait B {
diff --git a/tests/crashes/121444.rs b/tests/crashes/121444.rs
index 5a4289203dd..d3e5c385129 100644
--- a/tests/crashes/121444.rs
+++ b/tests/crashes/121444.rs
@@ -1,4 +1,6 @@
 //@ known-bug: #121444
+//@ compile-flags: -Copt-level=0
+//@ edition:2021
 #[repr(align(536870912))]
 pub struct A(i64);
 
diff --git a/tests/crashes/123157.rs b/tests/crashes/123157.rs
index 0c0721d02ec..d6cc55ba052 100644
--- a/tests/crashes/123157.rs
+++ b/tests/crashes/123157.rs
@@ -1,4 +1,5 @@
 //@ known-bug: #123157
+//@ edition:2021
 #![feature(type_alias_impl_trait)]
 
 #[derive(Copy, Clone)]
diff --git a/tests/crashes/README.md b/tests/crashes/README.md
index 28346b26e37..de25c6c1340 100644
--- a/tests/crashes/README.md
+++ b/tests/crashes/README.md
@@ -4,7 +4,7 @@ the rustc testsuite is more convenient.
 
 It is imperative that a test in the suite causes an internal compiler error/panic
 or makes rustc crash in some other way.
-Accepted exit codes are: 101 (may be expanded later)
+A test will "pass" if rustc exits with something other than 1 or 0.
 
 When adding crashes from https://github.com/rust-lang/rust/issues, the
 issue number should be noted in the file name (12345.rs should suffice)