crash of Jenkins on qa.nuxeo.org around 19-Jul-2019 23h

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1. A fatal error has been detected by the Java Runtime Environment:
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2. [thread 139823099434752 also had an error]
   SIGSEGV (0xb) at pc=0x00007f2b1b91efe6, pid=2642, tid=0x00007f29f09cf700
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3. JRE version: OpenJDK Runtime Environment (8.0_191-b12) (build 1.8.0_191-8u191-b12-2ubuntu0.16.04.1-b12)
4. Java VM: OpenJDK 64-Bit Server VM (25.191-b12 mixed mode linux-amd64 compressed oops)
5. Problematic frame:
6. C [libfreetype.so.6+0x25fe6]
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7. Failed to write core dump. Core dumps have been disabled. To enable core dumping, try "ulimit -c unlimited" before starting Java again
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8. An error report file with more information is saved as:
9. /tmp/hs_err_pid2642.log
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10. If you would like to submit a bug report, please visit:
11. http://bugreport.java.com/bugreport/crash.jsp
12. The crash happened outside the Java Virtual Machine in native code.
13. See problematic frame for where to report the bug.
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