<p><em>I have copied the below issue from <a class="issue-link js-issue-link" data-error-text="Failed to load issue title" data-id="313968389" data-permission-text="Issue title is private" data-url="https://github.com/hpi-swa/smalltalkCI/issues/366" href="https://github.com/hpi-swa/smalltalkCI/issues/366">hpi-swa/smalltalkCI#366</a>.</em></p>
<p>Hi!</p>
<p>Time to time, the Pharo VM crashes, without any apparent reasons.<br>
For example, in <a href="https://travis-ci.org/ObjectProfile/Roassal2/jobs/365943067" rel="nofollow">https://travis-ci.org/ObjectProfile/Roassal2/jobs/365943067</a></p>
<pre><code>VM: 201708271955 https://github.com/OpenSmalltalk/opensmalltalk-vm.git $ Date: Sun Aug 27 21:55:26 2017 +0200 $
Plugins: 201708271955 https://github.com/OpenSmalltalk/opensmalltalk-vm.git $
C stack backtrace & registers:
        eax 0x1e750080 ebx 0x00000100 ecx 0x00000020 edx 0x00000002
        edi 0x00000020 esi 0x00000020 ebp 0xbff09c58 esp 0xbff09c58
        eip 0x000e848d
0   Pharo                               0x000e848d fetchByteofObject + 9
1   Pharo                               0x00149400 reportStackState + 819
2   Pharo                               0x001497a2 sigsegv + 191
3   libsystem_platform.dylib            0xa1742e5b _sigtramp + 43
</code></pre>
<p>And a bit below:</p>
<pre><code>Smalltalk
Smalltalk stack dump:
0xbff11ce8 I SessionManager>snapshot:andQuit: 0x6b496a8: a(n) SessionManager
0xbff11d18 I [] in SmalltalkImage>snapshot:andQuit: 0x5517fa0: a(n) SmalltalkImage
0xbff11d3c I CurrentExecutionEnvironment class>activate:for: 0x5af3520: a(n) CurrentExecutionEnvironment class
0xbff11d64 I DefaultExecutionEnvironment(ExecutionEnvironment)>beActiveDuring: 0x5e2bc70: a(n) DefaultExecutionEnvironment
0xbff11d88 I DefaultExecutionEnvironment class>beActiveDuring: 0x5b1d8a8: a(n) DefaultExecutionEnvironment class
0xbff11dac I SmalltalkImage>snapshot:andQuit: 0x5517fa0: a(n) SmalltalkImage
</code></pre>
<p>It seems to happens randomly</p>
<p>/cc <a class="user-mention" data-hovercard-user-id="393742" data-octo-click="hovercard-link-click" data-octo-dimensions="link_type:self" href="https://github.com/bergel">@bergel</a></p>

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