glibc update causes unit test to fail on golden_regex mismatch

[mikedanese]

➜  test_suite git:(master) ✗ ./run_tests.sh 
FAIL (regex mismatch): error.import_folder.jsonnet
This run's output:
RUNTIME ERROR: Couldn't open import "lib": basic_filebuf::underflow error reading the file: iostream error
        error.import_folder.jsonnet:17:1-12
FAILED: 1 / 88
➜  test_suite git:(master) ✗ cat error.import_folder.jsonnet.golden_regex 
(STATIC ERROR: lib:1:1: Unexpected end of file.|RUNTIME ERROR: Couldn't open import "lib": basic_filebuf::underflow error reading the file
        error.import_folder.jsonnet:17:1-12     )

[sparkprime]

ugh, need a better way of doing this