dartanalyzer crashes when .packages is invalid UTF8

[harryterkelsen]

stdout:

Unable to read package config data from /usr/local/google/home/het/code/dart/sdk/tests/standalone/package/scenarios/invalid/invalid_utf8.packages: FormatException: Not a valid package name (at character 1)
þ
^

[pq]

Unlike the dart2js corollary (#24120), this doesn't dump a stack trace and the message seems reasonable enough. @hterkelsen: What's the desired result?

[pq]

Back to @hterkelsen: what's the desired result?

[harryterkelsen]

Since the analyzer is expected to terminate with a nonzero exit code on these then I think it's OK to mark them as 'Crash' in the status file.