Increase timeout to avoid flaky tests.

Also, print extra information when an error occurs.

Test: Ran unit tests.
Change-Id: I3404549db0ac18a4a82a99b2620556db96376bca
diff --git a/debuggerd/debuggerd_test.cpp b/debuggerd/debuggerd_test.cpp
index 64df53e..1f0e420 100644
--- a/debuggerd/debuggerd_test.cpp
+++ b/debuggerd/debuggerd_test.cpp
@@ -243,9 +243,10 @@
 
 void CrasherTest::AssertDeath(int signo) {
   int status;
-  pid_t pid = TIMEOUT(5, waitpid(crasher_pid, &status, 0));
+  pid_t pid = TIMEOUT(10, waitpid(crasher_pid, &status, 0));
   if (pid != crasher_pid) {
-    printf("failed to wait for crasher (pid %d)\n", crasher_pid);
+    printf("failed to wait for crasher (expected pid %d, return value %d): %s\n", crasher_pid, pid,
+           strerror(errno));
     sleep(100);
     FAIL() << "failed to wait for crasher: " << strerror(errno);
   }