Transient Windows test failures

[Matt Harbison]

(CC: mailing list)

On Thu, 15 Jun 2017 22:12:25 -0400, Matt Harbison <mharbison72 at gmail.com>  
wrote:

> On Sat, 10 Jun 2017 02:55:47 -0400, Matt Harbison  
> <mharbison72 at gmail.com> wrote:
>
>> In the last day, I've had a handful of tests fail like so, over several  
>> runs:
>
>>
>> About a week ago I also started noticing occasional errors like these:
>>
>> --- c:/Users/Matt/projects/hg/tests/test-graft.t
>> +++ c:/Users/Matt/projects/hg/tests/test-graft.t.err
>> @@ -324,12 +324,14 @@
>>
>>   Graft again onto another branch should preserve the original source
>>     $ hg up -q 0
>> +  abort: Invalid Signature
>> +  [255]
>>     $ echo 'g'>g
>>     $ hg add g
>>     $ hg ci -m 7
>> -  created new head
>>     $ hg graft 7
>> -  grafting 7:ef0ef43d49e7 "2"
>> +  skipping ancestor revision 7:ef0ef43d49e7
>> +  [255]
>>
>>     $ hg log -r 7 --template '{rev}:{node}\n'
>>     7:ef0ef43d49e79e81ddafdc7997401ba0041efc82
>
> Got lucky, and hit one where the stack was dumped:
>
> --- c:/Users/Matt/projects/hg/tests/test-hgweb-commands.t
> +++ c:/Users/Matt/projects/hg/tests/test-hgweb-commands.t.err
> @@ -1238,14 +1238,21 @@
>
>     foo
>     $ get-with-headers.py $LOCALIP:$HGPORT 'annotate/1/foo/?style=raw'
> -  200 Script output follows
> -
> -
> -  test at 0: foo
> -
> -
> -
> -
> +  Traceback (most recent call last):\r (esc)
> +    File "c:/Users/Matt/projects/hg/tests/get-with-headers.py", line  
> 12, in <module>\r (esc)
> +      from mercurial import (\r (esc)
> +    File "c:\\Users\\Matt\\projects\\hg\\mercurial\\util.py", line 37,  
> in <module>\r (esc)
> +      import tempfile\r (esc)
> +    File "c:\\Python27\\lib\\tempfile.py", line 35, in <module>\r (esc)
> +      from random import Random as _Random\r (esc)
> +    File "c:\\Python27\\lib\\random.py", line 885, in <module>\r (esc)
> +      _inst = Random()\r (esc)
> +    File "c:\\Python27\\lib\\random.py", line 97, in __init__\r (esc)
> +      self.seed(x)\r (esc)
> +    File "c:\\Python27\\lib\\random.py", line 113, in seed\r (esc)
> +      a = long(_hexlify(_urandom(2500)), 16)\r (esc)
> +  WindowsError: [Error -2146893818] Invalid Signature\r (esc)
> +  [1]
>     $ get-with-headers.py $LOCALIP:$HGPORT 'file/1/?style=raw'
>     200 Script output follows
>
> I can't say that I remember the WindowsError last time I saw the stack.