8 files changed, 12 insertions, 21 deletions
diff --git a/tests/ui/panic-runtime/abort-link-to-unwinding-crates.rs b/tests/ui/panic-runtime/abort-link-to-unwinding-crates.rs
index ce6644e6758..0566d2319df 100644
--- a/tests/ui/panic-runtime/abort-link-to-unwinding-crates.rs
+++ b/tests/ui/panic-runtime/abort-link-to-unwinding-crates.rs
@@ -1,10 +1,8 @@
 //@ run-pass
-#![allow(unused_variables)]
 //@ compile-flags:-C panic=abort
 //@ aux-build:exit-success-if-unwind.rs
 //@ no-prefer-dynamic
-//@ ignore-wasm32 no processes
-//@ ignore-sgx no processes
+//@ needs-subprocess
 
 extern crate exit_success_if_unwind;
 
@@ -13,7 +11,7 @@ use std::process::Command;
 
 fn main() {
     let mut args = env::args_os();
-    let me = args.next().unwrap();
+    let _ = args.next().unwrap();
 
     if let Some(s) = args.next() {
         if &*s == "foo" {
diff --git a/tests/ui/panic-runtime/abort.rs b/tests/ui/panic-runtime/abort.rs
index caf0243ebdb..8cdfd018a92 100644
--- a/tests/ui/panic-runtime/abort.rs
+++ b/tests/ui/panic-runtime/abort.rs
@@ -1,9 +1,7 @@
 //@ run-pass
-#![allow(unused_variables)]
 //@ compile-flags:-C panic=abort
 //@ no-prefer-dynamic
-//@ ignore-wasm32 no processes
-//@ ignore-sgx no processes
+//@ needs-subprocess
 
 use std::env;
 use std::process::Command;
@@ -18,7 +16,7 @@ impl Drop for Bomb {
 
 fn main() {
     let mut args = env::args_os();
-    let me = args.next().unwrap();
+    let _ = args.next().unwrap();
 
     if let Some(s) = args.next() {
         if &*s == "foo" {
diff --git a/tests/ui/panic-runtime/lto-abort.rs b/tests/ui/panic-runtime/lto-abort.rs
index c66b6a60c73..cf15ae6435b 100644
--- a/tests/ui/panic-runtime/lto-abort.rs
+++ b/tests/ui/panic-runtime/lto-abort.rs
@@ -1,9 +1,7 @@
 //@ run-pass
-#![allow(unused_variables)]
 //@ compile-flags:-C lto -C panic=abort
 //@ no-prefer-dynamic
-//@ ignore-wasm32 no processes
-//@ ignore-sgx no processes
+//@ needs-subprocess
 
 use std::process::Command;
 use std::env;
@@ -18,7 +16,7 @@ impl Drop for Bomb {
 
 fn main() {
     let mut args = env::args_os();
-    let me = args.next().unwrap();
+    let _ = args.next().unwrap();
 
     if let Some(s) = args.next() {
         if &*s == "foo" {
diff --git a/tests/ui/panic-runtime/lto-unwind.rs b/tests/ui/panic-runtime/lto-unwind.rs
index 5eab2bd56ed..93275052f85 100644
--- a/tests/ui/panic-runtime/lto-unwind.rs
+++ b/tests/ui/panic-runtime/lto-unwind.rs
@@ -1,11 +1,8 @@
 //@ run-pass
-#![allow(unused_variables)]
-
 //@ compile-flags:-C lto -C panic=unwind
 //@ needs-unwind
 //@ no-prefer-dynamic
-//@ ignore-emscripten no processes
-//@ ignore-sgx no processes
+//@ needs-subprocess
 
 use std::process::Command;
 use std::env;
@@ -20,7 +17,7 @@ impl Drop for Bomb {
 
 fn main() {
     let mut args = env::args_os();
-    let me = args.next().unwrap();
+    let _ = args.next().unwrap();
 
     if let Some(s) = args.next() {
         if &*s == "foo" {
diff --git a/tests/ui/panic-runtime/unwind-interleaved.rs b/tests/ui/panic-runtime/unwind-interleaved.rs
index e5505cd893a..83eb6365097 100644
--- a/tests/ui/panic-runtime/unwind-interleaved.rs
+++ b/tests/ui/panic-runtime/unwind-interleaved.rs
@@ -1,6 +1,6 @@
 //@ run-fail
 //@ error-pattern:explicit panic
-//@ ignore-emscripten no processes
+//@ needs-subprocess
 
 fn a() {}
 
diff --git a/tests/ui/panic-runtime/unwind-rec.rs b/tests/ui/panic-runtime/unwind-rec.rs
index d4b53c88768..a855a4de280 100644
--- a/tests/ui/panic-runtime/unwind-rec.rs
+++ b/tests/ui/panic-runtime/unwind-rec.rs
@@ -1,6 +1,6 @@
 //@ run-fail
 //@ error-pattern:explicit panic
-//@ ignore-emscripten no processes
+//@ needs-subprocess
 
 fn build() -> Vec<isize> {
     panic!();
diff --git a/tests/ui/panic-runtime/unwind-rec2.rs b/tests/ui/panic-runtime/unwind-rec2.rs
index 6ac9a5a5805..ed02b117fff 100644
--- a/tests/ui/panic-runtime/unwind-rec2.rs
+++ b/tests/ui/panic-runtime/unwind-rec2.rs
@@ -1,6 +1,6 @@
 //@ run-fail
 //@ error-pattern:explicit panic
-//@ ignore-emscripten no processes
+//@ needs-subprocess
 
 fn build1() -> Vec<isize> {
     vec![0, 0, 0, 0, 0, 0, 0]
diff --git a/tests/ui/panic-runtime/unwind-unique.rs b/tests/ui/panic-runtime/unwind-unique.rs
index a6cd59690ca..b57d81842c4 100644
--- a/tests/ui/panic-runtime/unwind-unique.rs
+++ b/tests/ui/panic-runtime/unwind-unique.rs
@@ -1,6 +1,6 @@
 //@ run-fail
 //@ error-pattern:explicit panic
-//@ ignore-emscripten no processes
+//@ needs-subprocess
 
 fn failfn() {
     panic!();