Segfault in Java 7 Kokoro test

[chingor13]

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Environment details

• OS: Kokoro
• Java version: 7
• google-http-java-client version: master

Steps to reproduce

1. Example in PR Release google-http-java-client v1.26.0 #495
2. https://source.cloud.google.com/results/invocations/757c3cc2-dc39-4551-84b3-65607cd1b35e/targets/cloud-devrel%2Fclient-libraries%2Fjava%2Fgoogle-http-java-client%2Fpresubmit%2Fjava7/log

Stacktrace

...snip
[INFO] Downloading from central: https://repo.maven.apache.org/maven2/asm/asm-commons/3.1/asm-commons-3.1.jar
[INFO] Downloaded from central: https://repo.maven.apache.org/maven2/asm/asm-analysis/3.1/asm-analysis-3.1.jar (18 kB at 71 kB/s)
[INFO] Downloading from central: https://repo.maven.apache.org/maven2/asm/asm-util/3.1/asm-util-3.1.jar
[INFO] Downloaded from central: https://repo.maven.apache.org/maven2/asm/asm-commons/3.1/asm-commons-3.1.jar (33 kB at 120 kB/s)
[INFO] Downloading from central: https://repo.maven.apache.org/maven2/asm/asm-tree/3.1/asm-tree-3.1.jar
[INFO] Downloaded from central: https://repo.maven.apache.org/maven2/asm/asm-util/3.1/asm-util-3.1.jar (34 kB at 124 kB/s)
[INFO] Downloading from central: https://repo.maven.apache.org/maven2/asm/asm-xml/3.1/asm-xml-3.1.jar
[INFO] Downloaded from central: https://repo.maven.apache.org/maven2/com/google/code/findbugs/findbugs/1.3.9/findbugs-1.3.9.jar (3.3 MB at 12 MB/s)
[INFO] Downloading from central: https://repo.maven.apache.org/maven2/jgoodies/plastic/1.2.0/plastic-1.2.0.jar
[INFO] Downloaded from central: https://repo.maven.apache.org/maven2/asm/asm-tree/3.1/asm-tree-3.1.jar (22 kB at 73 kB/s)
[INFO] Downloading from central: https://repo.maven.apache.org/maven2/org/codehaus/plexus/plexus-resources/1.0-alpha-4/plexus-resources-1.0-alpha-4.jar
[INFO] Downloaded from central: https://repo.maven.apache.org/maven2/asm/asm-xml/3.1/asm-xml-3.1.jar (52 kB at 169 kB/s)
[INFO] Downloading from central: https://repo.maven.apache.org/maven2/org/codehaus/plexus/plexus-utils/1.5.1/plexus-utils-1.5.1.jar
[INFO] Downloaded from central: https://repo.maven.apache.org/maven2/org/codehaus/groovy/groovy-all/1.7.4/groovy-all-1.7.4.jar (5.4 MB at 17 MB/s)
[INFO] Downloaded from central: https://repo.maven.apache.org/maven2/jgoodies/plastic/1.2.0/plastic-1.2.0.jar (233 kB at 736 kB/s)
[INFO] Downloaded from central: https://repo.maven.apache.org/maven2/xalan/xalan/2.6.0/xalan-2.6.0.jar (3.1 MB at 9.8 MB/s)
[INFO] Downloaded from central: https://repo.maven.apache.org/maven2/org/codehaus/plexus/plexus-resources/1.0-alpha-4/plexus-resources-1.0-alpha-4.jar (17 kB at 51 kB/s)
[INFO] Downloaded from central: https://repo.maven.apache.org/maven2/org/codehaus/plexus/plexus-utils/1.5.1/plexus-utils-1.5.1.jar (211 kB at 587 kB/s)
#
# A fatal error has been detected by the Java Runtime Environment:
#
#  SIGSEGV (0xb) at pc=0x00007f7f7a1b7811, pid=22, tid=140185512769280
#
# JRE version: OpenJDK Runtime Environment (7.0_181-b01) (build 1.7.0_181-b01)
# Java VM: OpenJDK 64-Bit Server VM (24.181-b01 mixed mode linux-amd64 compressed oops)
# Derivative: IcedTea 2.6.14
# Distribution: Debian GNU/Linux 8.10 (jessie), package 7u181-2.6.14-1~deb8u1
# Problematic frame:
# V  [libjvm.so+0x309811]
#
# Failed to write core dump. Core dumps have been disabled. To enable core dumping, try "ulimit -c unlimited" before starting Java again
#
# An error report file with more information is saved as:
# /tmpfs/src/github/google-http-java-client/hs_err_pid22.log
#
# If you would like to submit a bug report, please include
# instructions on how to reproduce the bug and visit:
#   http://icedtea.classpath.org/bugzilla
#
github/google-http-java-client/.kokoro/build.sh: line 24:    22 Aborted                 (core dumped) mvn install -DskipTests=true -Dmaven.javadoc.skip=true -B -V
cleanup

[chingor13]

Fixed in #495