Coverage execution fails for files not encoded with utf-8

[maru]

BPO	5656
Nosy	@birkenfeld
Files	trace_detect_encoding.patch: Detects encoding of module under coverage. trace_ignore_temp_path.patch: Ignores modules in temp paths for coverage output

^{Note: these values reflect the state of the issue at the time it was migrated and might not reflect the current state.}

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GitHub fields:

assignee = None
closed_at = <Date 2009-04-01.23:07:47.465>
created_at = <Date 2009-04-01.18:25:41.040>
labels = ['tests', 'type-crash']
title = 'Coverage execution fails for files not encoded with utf-8'
updated_at = <Date 2009-04-01.23:07:47.451>
user = 'https://bugs.python.org/maru'

bugs.python.org fields:

activity = <Date 2009-04-01.23:07:47.451>
actor = 'georg.brandl'
assignee = 'none'
closed = True
closed_date = <Date 2009-04-01.23:07:47.465>
closer = 'georg.brandl'
components = ['Tests']
creation = <Date 2009-04-01.18:25:41.040>
creator = 'maru'
dependencies = []
files = ['13553', '13554']
hgrepos = []
issue_num = 5656
keywords = ['patch']
message_count = 2.0
messages = ['85065', '85110']
nosy_count = 2.0
nosy_names = ['georg.brandl', 'maru']
pr_nums = []
priority = 'normal'
resolution = 'fixed'
stage = None
status = 'closed'
superseder = None
type = 'crash'
url = 'https://bugs.python.org/issue5656'
versions = ['Python 3.1']

[maru]

Running the tests with coverage against files using non-utf8 encoding
was raising an exception that prevented coverage output from being
displayed (patch is attached).

The coverage output was also being polluted with failed attempts to
display modules that were created during the testing in temporary paths.
A patch is attached that prevents coverage output from being attempted
for such files.

[birkenfeld]

Committed in r71002.