upgrade behemoths to JDK 11.0.1

[SethTisue]

the JDK 11 community builds are plagued by JVM crashes. scala-xml crashes especially often. I've also seen wartremover crash.

maybe upgrading to 11.0.1 will fix it... it's worth a try

I can use the steps at #742 (comment) as a template

Linux x64 tarball URL is
https://download.java.net/java/GA/jdk11/13/GPL/openjdk-11.0.1_linux-x64_bin.tar.gz

[SethTisue]

curl -O 'https://download.java.net/java/GA/jdk11/13/GPL/openjdk-11.0.1_linux-x64_bin.tar.gz'
sudo mv openjdk-11.0.1_linux-x64_bin.tar.gz /usr/lib/jvm
cd /usr/lib/jvm
sudo tar xzf openjdk-11.0.1_linux-x64_bin.tar.gz
sudo rm openjdk-11.0.1_linux-x64_bin.tar.gz
sudo mv java-11-openjdk-x64 jdk-11.0.0
sudo ln -s jdk-11.0.1 java-11-openjdk-x64

admin@ip-172-31-2-5:/usr/lib/jvm$ source /usr/local/share/jvm/jvm-select
admin@ip-172-31-2-5:/usr/lib/jvm$ jvmSelect openjdk 11
Java home: /usr/lib/jvm/java-11-openjdk-x64
admin@ip-172-31-2-5:/usr/lib/jvm$ java -version
openjdk version "11.0.1" 2018-10-16
OpenJDK Runtime Environment 18.9 (build 11.0.1+13)
OpenJDK 64-Bit Server VM 18.9 (build 11.0.1+13, mixed mode)

[SethTisue]

• https://scala-ci.typesafe.com/view/scala-2.12.x/job/scala-2.12.x-jdk11-integrate-community-build/109/consoleFull
• https://scala-ci.typesafe.com/job/scala-2.13.x-jdk11-integrate-community-build/75/consoleFull

(although we only have JDK 11 jobs on 2 of the behemoths at present, I did the upgrade on all 3)

[SethTisue]

time will tell whether 11.0.1 is any less crashy. I'll post a status update here next week

[SethTisue]

hmm, magnolia already SIGSEGV'd in the 2.13 run

[SethTisue]

I haven't seen any further JVM crashes recently. still keeping an eye on it

[SethTisue]

JVM crashes have been rare lately, with a single consistent exception:

scalacheck-shapeless has been repeatedly SIGSEGV'ing, e.g. https://scala-ci.typesafe.com/job/scala-2.13.x-jdk11-integrate-community-build/1137/artifact/logs/scalacheck-shapeless-build.log

on all 3 behemoths, I ran sudo apt-get upgrade adoptopenjdk-11-hotspot in hopes the situation may improve. (I note that as a side effect, this also caused adoptopenjdk-8-hotspot to upgrade.)