Handle trace changes due to libc upgrade

- libc stacktraces have changed (again)
- see commit 54d47a80

tests/hello_overflow1.c

@@ -12,7 +12,7 @@ int main() {
 // 11
 
 // stderr: Invalid heap access: address 0x100002000 is not in an allocation or was already freed
-// stderr: at /lib/x86_64-linux-gnu/libc.so.6(+0x189f58)
+// stderr: at /lib/x86_64-linux-gnu/libc.so.6(+0x18a178)
 // stderr: ??
 // stderr: strcpy-avx2.S:612
 // stderr: at bin/hello_overflow1(main+0x24)

tests/hello_use_after_free1.c

@@ -10,7 +10,7 @@ int main() {
 // 11
 
 // stderr: Invalid heap access: address 0x100001f9c is not in an allocation or was already freed
-// stderr: at /lib/x86_64-linux-gnu/libc.so.6(+0x189f58)
+// stderr: at /lib/x86_64-linux-gnu/libc.so.6(+0x18a178)
 // stderr: ??
 // stderr: strcpy-avx2.S:612
 // stderr: at bin/hello_use_after_free1(main+0x32)

tests/hello_use_after_free2.c

@@ -17,7 +17,7 @@ int main() {
 // stdout: HELO
 
 // stderr: Invalid heap access: address 0x100001fd8 is not in an allocation or was already freed
-// stderr: at /lib/x86_64-linux-gnu/libc.so.6(+0x1886f5)
+// stderr: at /lib/x86_64-linux-gnu/libc.so.6(+0x188915)
 // stderr: ??
 // stderr: strlen-avx2.S:65
 // stderr: at /lib/x86_64-linux-gnu/libc.so.6(+0x78d15)