fix: Show QEMU errors on unexpected exit (#1873)

src/entry.sh

@@ -47,17 +47,21 @@ sed -u \
   -e 's/failed to load Boot/skipped Boot/g' \
   -e 's/0): Not Found/0)/g' &
 
+output=$!
+
 if ! enabled "$SHUTDOWN"; then
-  exec "${cmd[@]}" ${ARGS:+ $ARGS} >"$pipe"
+  exec "${cmd[@]}" ${ARGS:+ $ARGS} >"$pipe" 2>&1
 fi
 
-"${cmd[@]}" ${ARGS:+ $ARGS} >"$pipe" &
+"${cmd[@]}" ${ARGS:+ $ARGS} >"$pipe" 2>&1 &
 
 pid=$!
 ( sleep 30; boot ) &
 
 rc=0
 wait "$pid" || rc=$?
+wait "$output" || :
+
 [ -f "$QEMU_END" ] && exit "$rc"
 
 sleep 1 & wait $!

src/power.sh

@@ -186,6 +186,12 @@ cleanupHelpers() {
 finish() {
 
   local reason=$1
+  local failed=0
+
+  if [ ! -f "$QEMU_END" ] && (( reason != 0 )); then
+    failed=1
+  fi
+
   touch "$QEMU_END"
 
   forceKillQemu "$reason"
@@ -200,7 +206,13 @@ finish() {
     warn "Timed out while waiting for $(app) to exit!"
   fi
 
-  (( reason != 1 )) && echo && echo "❯ Shutdown completed!"
+  echo
+
+  if (( failed == 0 )); then
+    echo "❯ Shutdown completed!"
+  else
+    error "QEMU exited unexpectedly!"
+  fi
 
   exit "$reason"
 }