Test fails due to java.lang.RuntimeException: getprotobyname_r failed

[andsel]

Build scan:
https://app.travis-ci.com/github/logstash-plugins/logstash-output-email/jobs/604182669#L581

Repro line:

Reproduces locally?:
No

Applicable branches:
main

Failure history:

Failure excerpt:

logstash_1_7b8bd130d51c | java.lang.RuntimeException: getprotobyname_r failed
logstash_1_7b8bd130d51c | 	at org.jruby.dist/jnr.netdb.NativeProtocolsDB$LinuxNativeProtocolsDB.getProtocolByName(NativeProtocolsDB.java:180)
logstash_1_7b8bd130d51c | 	at org.jruby.dist/jnr.netdb.NativeProtocolsDB.load(NativeProtocolsDB.java:80)
logstash_1_7b8bd130d51c | 	at org.jruby.dist/jnr.netdb.NativeProtocolsDB.access$000(NativeProtocolsDB.java:40)
logstash_1_7b8bd130d51c | 	at org.jruby.dist/jnr.netdb.NativeProtocolsDB$SingletonHolder.<clinit>(NativeProtocolsDB.java:47)
logstash_1_7b8bd130d51c | 	at org.jruby.dist/jnr.netdb.NativeProtocolsDB.getInstance(NativeProtocolsDB.java:43)
logstash_1_7b8bd130d51c | 	at org.jruby.dist/jnr.netdb.Protocol$ProtocolDBSingletonHolder.load(Protocol.java:107)
logstash_1_7b8bd130d51c | 	at org.jruby.dist/jnr.netdb.Protocol$ProtocolDBSingletonHolder.<clinit>(Protocol.java:103)
logstash_1_7b8bd130d51c | 	at org.jruby.dist/jnr.netdb.Protocol.getProtocolDB(Protocol.java:96)
logstash_1_7b8bd130d51c | 	at org.jruby.dist/jnr.netdb.Protocol.getProtocolByNumber(Protocol.java:59)
logstash_1_7b8bd130d51c | 	at org.jruby.dist/org.jruby.ext.socket.Addrinfo.<init>(Addrinfo.java:847)
logstash_1_7b8bd130d51c | 	at org.jruby.dist/org.jruby.ext.socket.SocketUtils$2.addrinfo(SocketUtils.java:256)
logstash_1_7b8bd130d51c | 	at org.jruby.dist/org.jruby.ext.socket.SocketUtils.buildAddrinfoList(SocketUtils.java:322)
logstash_1_7b8bd130d51c | 	at org.jruby.dist/org.jruby.ext.socket.SocketUtils.getaddrinfoList(SocketUtils.java:232)
logstash_1_7b8bd130d51c | 	at org.jruby.dist/org.jruby.ext.socket.Addrinfo.getaddrinfo(Addrinfo.java:322)
logstash_1_7b8bd130d51c | 	at org.jruby.dist/org.jruby.ext.socket.Addrinfo$INVOKER$s$0$0$getaddrinfo.call(Addrinfo$INVOKER$s$0$0$getaddrinfo.gen)
logstash_1_7b8bd130d51c | 	at org.jruby.dist/org.jruby.internal.runtime.methods.JavaMethod$JavaMethodN.call(JavaMethod.java:846)
logstash_1_7b8bd130d51c | 	at org.jruby.dist/org.jruby.ir.targets.indy.InvokeSite.invoke(InvokeSite.java:208)
logstash_1_7b8bd130d51c | 	at usr.share.logstash.vendor.jruby.lib.ruby.stdlib.socket.RUBY$method$foreach$0(/usr/share/logstash/vendor/jruby/lib/ruby/stdlib/socket.rb:229)

Related to jruby/jruby#3955