imported/w3c/web-platform-tests/encoding/legacy-mb-korean/euc-kr/euckr-decode-iso-ir-149.html [ Crash ] Last crash happened in r228915, but it doesn't seem to be related to the test. There are also other crashes that lasted a single revision but they are very few. Unfortunately, there's no backtrace of the crash.
According to wktesthunter, last CRASH was r232042 (May 22 2018). Replaced the CRASH expectation with a Timeout one in bug207714 (and tracked in bug207711).