diff --git a/tests/ui/lifetimes/tail-expr-lock-poisoning.rs b/tests/ui/lifetimes/tail-expr-lock-poisoning.rs
index d7c7b2e24143a..237ee9c422f08 100644
--- a/tests/ui/lifetimes/tail-expr-lock-poisoning.rs
+++ b/tests/ui/lifetimes/tail-expr-lock-poisoning.rs
@@ -1,9 +1,8 @@
 //@ revisions: edition2021 edition2024
-//@ ignore-wasm no panic support
-//@ needs-subprocess
 //@ [edition2024] edition: 2024
 //@ run-pass
 //@ needs-unwind
+//@ needs-subprocess
 
 use std::sync::Mutex;
 
diff --git a/tests/ui/panics/issue-47429-short-backtraces.rs b/tests/ui/panics/issue-47429-short-backtraces.rs
index 4a73ebe8712dc..58af8cdb024f9 100644
--- a/tests/ui/panics/issue-47429-short-backtraces.rs
+++ b/tests/ui/panics/issue-47429-short-backtraces.rs
@@ -17,9 +17,8 @@
 //@ ignore-msvc see #62897 and `backtrace-debuginfo.rs` test
 //@ ignore-android FIXME #17520
 //@ ignore-openbsd no support for libbacktrace without filename
-//@ ignore-wasm no panic support
-//@ ignore-emscripten no panic support
 //@ ignore-fuchsia Backtraces not symbolized
+//@ needs-unwind
 //@ needs-subprocess
 
 fn main() {
diff --git a/tests/ui/panics/issue-47429-short-backtraces.run.stderr b/tests/ui/panics/issue-47429-short-backtraces.run.stderr
index c6e2d13fb5da7..b12d7d027f622 100644
--- a/tests/ui/panics/issue-47429-short-backtraces.run.stderr
+++ b/tests/ui/panics/issue-47429-short-backtraces.run.stderr
@@ -1,5 +1,5 @@
 
-thread 'main' panicked at $DIR/issue-47429-short-backtraces.rs:26:5:
+thread 'main' panicked at $DIR/issue-47429-short-backtraces.rs:25:5:
 explicit panic
 stack backtrace:
    0: std::panicking::begin_panic
diff --git a/tests/ui/panics/runtime-switch.rs b/tests/ui/panics/runtime-switch.rs
index 9f0be8c7ddfa6..53f8b738a926d 100644
--- a/tests/ui/panics/runtime-switch.rs
+++ b/tests/ui/panics/runtime-switch.rs
@@ -18,8 +18,8 @@
 //@ ignore-android FIXME #17520
 //@ ignore-openbsd no support for libbacktrace without filename
 //@ ignore-wasm no backtrace support
-//@ ignore-emscripten no panic support
 //@ ignore-fuchsia Backtrace not symbolized
+//@ needs-unwind
 //@ needs-subprocess
 
 #![feature(panic_backtrace_config)]
diff --git a/tests/ui/panics/short-ice-remove-middle-frames-2.rs b/tests/ui/panics/short-ice-remove-middle-frames-2.rs
index 48f60b141706b..0043772052c44 100644
--- a/tests/ui/panics/short-ice-remove-middle-frames-2.rs
+++ b/tests/ui/panics/short-ice-remove-middle-frames-2.rs
@@ -3,9 +3,9 @@
 //@ check-run-results
 //@ exec-env:RUST_BACKTRACE=1
 //@ needs-unwind
+//@ needs-subprocess
 //@ ignore-android FIXME #17520
 //@ ignore-openbsd no support for libbacktrace without filename
-//@ ignore-emscripten no panic
 //@ ignore-sgx Backtraces not symbolized
 //@ ignore-fuchsia Backtraces not symbolized
 //@ ignore-msvc the `__rust_{begin,end}_short_backtrace` symbols aren't reliable.
diff --git a/tests/ui/panics/short-ice-remove-middle-frames.rs b/tests/ui/panics/short-ice-remove-middle-frames.rs
index 216c512779956..39f3cd755fca8 100644
--- a/tests/ui/panics/short-ice-remove-middle-frames.rs
+++ b/tests/ui/panics/short-ice-remove-middle-frames.rs
@@ -3,9 +3,9 @@
 //@ check-run-results
 //@ exec-env:RUST_BACKTRACE=1
 //@ needs-unwind
+//@ needs-subprocess
 //@ ignore-android FIXME #17520
 //@ ignore-openbsd no support for libbacktrace without filename
-//@ ignore-emscripten no panic
 //@ ignore-sgx Backtraces not symbolized
 //@ ignore-fuchsia Backtraces not symbolized
 //@ ignore-msvc the `__rust_{begin,end}_short_backtrace` symbols aren't reliable.
diff --git a/tests/ui/test-attrs/test-panic-abort-disabled.rs b/tests/ui/test-attrs/test-panic-abort-disabled.rs
index 05dd9395c2b06..e98e18ad8e00f 100644
--- a/tests/ui/test-attrs/test-panic-abort-disabled.rs
+++ b/tests/ui/test-attrs/test-panic-abort-disabled.rs
@@ -2,10 +2,6 @@
 //@ no-prefer-dynamic
 //@ compile-flags: --test -Cpanic=abort -Zpanic-abort-tests=no
 //@ run-flags: --test-threads=1
-
-//@ needs-unwind
-//@ ignore-wasm no panic support
-//@ ignore-emscripten no panic support
 //@ needs-subprocess
 
 #![cfg(test)]
diff --git a/tests/ui/test-attrs/test-panic-abort-nocapture.rs b/tests/ui/test-attrs/test-panic-abort-nocapture.rs
index f7e15dbdbc30c..6a1025ea087c0 100644
--- a/tests/ui/test-attrs/test-panic-abort-nocapture.rs
+++ b/tests/ui/test-attrs/test-panic-abort-nocapture.rs
@@ -7,8 +7,6 @@
 //@ normalize-stdout: "finished in \d+\.\d+s" -> "finished in $$TIME"
 
 //@ ignore-android #120567
-//@ ignore-wasm no panic support
-//@ ignore-emscripten no panic support
 //@ needs-subprocess
 
 #![cfg(test)]
diff --git a/tests/ui/test-attrs/test-panic-abort-nocapture.run.stderr b/tests/ui/test-attrs/test-panic-abort-nocapture.run.stderr
index 256811711703b..b9f267838b191 100644
--- a/tests/ui/test-attrs/test-panic-abort-nocapture.run.stderr
+++ b/tests/ui/test-attrs/test-panic-abort-nocapture.run.stderr
@@ -1,11 +1,11 @@
 
-thread 'main' panicked at $DIR/test-panic-abort-nocapture.rs:34:5:
+thread 'main' panicked at $DIR/test-panic-abort-nocapture.rs:32:5:
 assertion `left == right` failed
   left: 2
  right: 4
 note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace
 
-thread 'main' panicked at $DIR/test-panic-abort-nocapture.rs:28:5:
+thread 'main' panicked at $DIR/test-panic-abort-nocapture.rs:26:5:
 assertion `left == right` failed
   left: 2
  right: 4
diff --git a/tests/ui/test-attrs/test-panic-abort.rs b/tests/ui/test-attrs/test-panic-abort.rs
index 951cf54346b4f..6c9b641fb6fba 100644
--- a/tests/ui/test-attrs/test-panic-abort.rs
+++ b/tests/ui/test-attrs/test-panic-abort.rs
@@ -7,8 +7,6 @@
 //@ normalize-stdout: "finished in \d+\.\d+s" -> "finished in $$TIME"
 
 //@ ignore-android #120567
-//@ ignore-wasm no panic support
-//@ ignore-emscripten no panic support
 //@ needs-subprocess
 
 #![cfg(test)]
diff --git a/tests/ui/test-attrs/test-panic-abort.run.stdout b/tests/ui/test-attrs/test-panic-abort.run.stdout
index 844808e86370d..0faa7f0dfcec4 100644
--- a/tests/ui/test-attrs/test-panic-abort.run.stdout
+++ b/tests/ui/test-attrs/test-panic-abort.run.stdout
@@ -18,7 +18,7 @@ testing123
 ---- it_fails stderr ----
 testing321
 
-thread 'main' panicked at $DIR/test-panic-abort.rs:39:5:
+thread 'main' panicked at $DIR/test-panic-abort.rs:37:5:
 assertion `left == right` failed
   left: 2
  right: 5