Can't connect to mysql server if a configuration set `options: { useLegacyDatetimeCode: false }`

Can't connect to mysql server if a configuration set `options: { useLegacyDatetimeCode: false }`

* Client
* embulk: 0.8.22
* embulk-output-mysql: 0.7.8
* MySQL connector/J: 5.1.34
* MySQL Server
* Version: 5.7.18
* OS: macOS 10.12.5

Reproduce configurations.

https://github.com/hiroyuki-sato/embulk-support/tree/master/output-jdbc_175_mysql_connector_j_v5_1_34

| options | result | file |
|---------------------------------------------------------|---------|------------------------------------------|
| nil(no set) | OK | option_none.yml.liquid |
| `{ useLegacyDatetimeCode: false, serverTimezone: UTC }` | OK | option_with_serverTimezone.yml.liquid |
| `options: { useLegacyDatetimeCode: false }` | NG | option_without_serverTimezone.yml.liquid |

```yaml
out:
type: mysql
table: time_test
database: embulk_test
user: root
password: {{ env.mysql_password }}
host: 127.0.0.1
mode: insert
# no options: <-- OK
# options: { useLegacyDatetimeCode: false, serverTimezone: UTC } # <-- OK
# options: { useLegacyDatetimeCode: false } # <-- NG

column_options:
purchase: {type: 'timestamp default current_timestamp'}
time: {type: 'timestamp default current_timestamp'}
```

```
embulk run option_without_serverTimezone.yml.liquid
2017-06-05 19:04:26.639 +0900: Embulk v0.8.22
2017-06-05 19:04:28.929 +0900 [INFO] (0001:transaction): Loaded plugin embulk-output-mysql (0.7.8)
2017-06-05 19:04:28.967 +0900 [INFO] (0001:transaction): Listing local files at directory 'hoge/csv' filtering filename by prefix 'sample_'
2017-06-05 19:04:28.968 +0900 [INFO] (0001:transaction): "follow_symlinks" is set false. Note that symbolic links to directories are skipped.
2017-06-05 19:04:28.971 +0900 [INFO] (0001:transaction): Loading files [hoge/csv/sample_01.csv.gz]
2017-06-05 19:04:29.022 +0900 [INFO] (0001:transaction): Using local thread executor with max_threads=8 / output tasks 4 = input tasks 1 * 4
2017-06-05 19:04:29.043 +0900 [INFO] (0001:transaction): Connecting to jdbc:mysql://127.0.0.1:3306/embulk_test options {user=root, useLegacyDatetimeCode=false, tcpKeepAlive=true, useCompression=true, rewriteBatchedStatements=true, connectTimeout=300000, socketTimeout=1800000}
2017-06-05 19:04:29.279 +0900 [ERROR] (0001:transaction): Operation failed (0:08001)
org.embulk.exec.PartialExecutionException: java.lang.RuntimeException: com.mysql.jdbc.exceptions.jdbc4.MySQLNonTransientConnectionException: Could not create connection to database server.
at org.embulk.exec.BulkLoader$LoaderState.buildPartialExecuteException(org/embulk/exec/BulkLoader.java:373)
at org.embulk.exec.BulkLoader.doRun(org/embulk/exec/BulkLoader.java:591)
at org.embulk.exec.BulkLoader.access$000(org/embulk/exec/BulkLoader.java:33)
at org.embulk.exec.BulkLoader$1.run(org/embulk/exec/BulkLoader.java:389)
at org.embulk.exec.BulkLoader$1.run(org/embulk/exec/BulkLoader.java:385)
at org.embulk.spi.Exec.doWith(org/embulk/spi/Exec.java:25)
at org.embulk.exec.BulkLoader.run(org/embulk/exec/BulkLoader.java:385)
at org.embulk.EmbulkEmbed.run(org/embulk/EmbulkEmbed.java:180)
at java.lang.reflect.Method.invoke(java/lang/reflect/Method.java:498)
at org.jruby.javasupport.JavaMethod.invokeDirectWithExceptionHandling(org/jruby/javasupport/JavaMethod.java:453)
at org.jruby.javasupport.JavaMethod.invokeDirect(org/jruby/javasupport/JavaMethod.java:314)
at RUBY.run(/Users/user/.embulk/bin/embulk!/embulk/runner.rb:84)
at RUBY.run(/Users/user/.embulk/bin/embulk!/embulk/command/embulk_run.rb:269)
at RUBY.(/Users/user/.embulk/bin/embulk!/embulk/command/embulk_main.rb:2)
at org.jruby.Ruby.runInterpreter(org/jruby/Ruby.java:850)
at org.jruby.Ruby.loadFile(org/jruby/Ruby.java:2976)
at org.jruby.RubyKernel.requireCommon(org/jruby/RubyKernel.java:963)
at org.jruby.RubyKernel.require(org/jruby/RubyKernel.java:956)
at org.jruby.RubyKernel$INVOKER$s$1$0$require19.call(org/jruby/RubyKernel$INVOKER$s$1$0$require19.gen)
at RUBY.(root)(uri:classloader:/META-INF/jruby.home/lib/ruby/stdlib/rubygems/core_ext/kernel_require.rb:1)
at Users.user.$_dot_embulk.bin.embulk.embulk.command.embulk_bundle.invokeOther66:require(Users/user/$_dot_embulk/bin/embulk/embulk/command/file:/Users/user/.embulk/bin/embulk!/embulk/command/embulk_bundle.rb:51)
at Users.user.$_dot_embulk.bin.embulk.embulk.command.embulk_bundle.(file:/Users/user/.embulk/bin/embulk!/embulk/command/embulk_bundle.rb:51)
at java.lang.invoke.MethodHandle.invokeWithArguments(java/lang/invoke/MethodHandle.java:627)
at org.jruby.Ruby.runScript(org/jruby/Ruby.java:834)
at org.jruby.Ruby.runNormally(org/jruby/Ruby.java:749)
at org.jruby.Ruby.runNormally(org/jruby/Ruby.java:767)
at org.jruby.Ruby.runFromMain(org/jruby/Ruby.java:580)
at org.jruby.Main.doRunFromMain(org/jruby/Main.java:425)
at org.jruby.Main.internalRun(org/jruby/Main.java:313)
at org.jruby.Main.run(org/jruby/Main.java:242)
at org.jruby.Main.main(org/jruby/Main.java:204)
at org.embulk.cli.Main.main(org/embulk/cli/Main.java:23)
Suppressed: java.lang.NullPointerException
at org.embulk.exec.BulkLoader.doCleanup(BulkLoader.java:494)
at org.embulk.exec.BulkLoader$3.run(BulkLoader.java:425)
at org.embulk.exec.BulkLoader$3.run(BulkLoader.java:421)
at org.embulk.spi.Exec.doWith(Exec.java:25)
at org.embulk.exec.BulkLoader.cleanup(BulkLoader.java:421)
at org.embulk.EmbulkEmbed.run(EmbulkEmbed.java:184)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.jruby.javasupport.JavaMethod.invokeDirectWithExceptionHandling(JavaMethod.java:453)
at org.jruby.javasupport.JavaMethod.invokeDirect(JavaMethod.java:314)
at org.jruby.java.invokers.InstanceMethodInvoker.call(InstanceMethodInvoker.java:46)
at org.jruby.runtime.callsite.CachingCallSite.cacheAndCall(CachingCallSite.java:338)
at org.jruby.runtime.callsite.CachingCallSite.call(CachingCallSite.java:163)
at org.jruby.ir.interpreter.InterpreterEngine.processCall(InterpreterEngine.java:315)
at org.jruby.ir.interpreter.StartupInterpreterEngine.interpret(StartupInterpreterEngine.java:73)
at org.jruby.ir.interpreter.InterpreterEngine.interpret(InterpreterEngine.java:90)
at org.jruby.internal.runtime.methods.MixedModeIRMethod.INTERPRET_METHOD(MixedModeIRMethod.java:214)
at org.jruby.internal.runtime.methods.MixedModeIRMethod.call(MixedModeIRMethod.java:200)
at org.jruby.internal.runtime.methods.DynamicMethod.call(DynamicMethod.java:205)
at org.jruby.runtime.callsite.CachingCallSite.cacheAndCall(CachingCallSite.java:358)
at org.jruby.runtime.callsite.CachingCallSite.call(CachingCallSite.java:195)
at org.jruby.ir.interpreter.InterpreterEngine.processCall(InterpreterEngine.java:324)
at org.jruby.ir.interpreter.StartupInterpreterEngine.interpret(StartupInterpreterEngine.java:73)
at org.jruby.ir.interpreter.InterpreterEngine.interpret(InterpreterEngine.java:84)
at org.jruby.internal.runtime.methods.MixedModeIRMethod.INTERPRET_METHOD(MixedModeIRMethod.java:179)
at org.jruby.internal.runtime.methods.MixedModeIRMethod.call(MixedModeIRMethod.java:165)
at org.jruby.internal.runtime.methods.DynamicMethod.call(DynamicMethod.java:197)
at org.jruby.runtime.callsite.CachingCallSite.cacheAndCall(CachingCallSite.java:338)
at org.jruby.runtime.callsite.CachingCallSite.call(CachingCallSite.java:163)
at org.jruby.ir.interpreter.InterpreterEngine.processCall(InterpreterEngine.java:315)
at org.jruby.ir.interpreter.StartupInterpreterEngine.interpret(StartupInterpreterEngine.java:73)
at org.jruby.ir.interpreter.Interpreter.INTERPRET_ROOT(Interpreter.java:112)
at org.jruby.ir.interpreter.Interpreter.execute(Interpreter.java:99)
at org.jruby.ir.interpreter.Interpreter.execute(Interpreter.java:35)
at org.jruby.ir.IRTranslator.execute(IRTranslator.java:42)
at org.jruby.Ruby.runInterpreter(Ruby.java:850)
at org.jruby.Ruby.loadFile(Ruby.java:2976)
at org.jruby.runtime.load.LibrarySearcher$ResourceLibrary.load(LibrarySearcher.java:243)
at org.jruby.runtime.load.LibrarySearcher$FoundLibrary.load(LibrarySearcher.java:34)
at org.jruby.runtime.load.LoadService.tryLoadingLibraryOrScript(LoadService.java:885)
at org.jruby.runtime.load.LoadService.smartLoadInternal(LoadService.java:525)
at org.jruby.runtime.load.LoadService.require(LoadService.java:396)
at org.jruby.RubyKernel.requireCommon(RubyKernel.java:963)
at org.jruby.RubyKernel.require19(RubyKernel.java:956)
at org.jruby.RubyKernel$INVOKER$s$1$0$require19.call(RubyKernel$INVOKER$s$1$0$require19.gen)
at org.jruby.internal.runtime.methods.JavaMethod$JavaMethodOneOrNBlock.call(JavaMethod.java:383)
at org.jruby.internal.runtime.methods.AliasMethod.call(AliasMethod.java:61)
at org.jruby.runtime.callsite.CachingCallSite.call(CachingCallSite.java:161)
at org.jruby.ir.interpreter.InterpreterEngine.processCall(InterpreterEngine.java:315)
at org.jruby.ir.interpreter.StartupInterpreterEngine.interpret(StartupInterpreterEngine.java:73)
at org.jruby.ir.interpreter.InterpreterEngine.interpret(InterpreterEngine.java:84)
at org.jruby.internal.runtime.methods.MixedModeIRMethod.INTERPRET_METHOD(MixedModeIRMethod.java:179)
at org.jruby.internal.runtime.methods.MixedModeIRMethod.call(MixedModeIRMethod.java:165)
at org.jruby.internal.runtime.methods.DynamicMethod.call(DynamicMethod.java:197)
at org.jruby.runtime.callsite.CachingCallSite.cacheAndCall(CachingCallSite.java:338)
at org.jruby.runtime.callsite.CachingCallSite.call(CachingCallSite.java:163)
at Users.user.$_dot_embulk.bin.embulk.embulk.command.embulk_bundle.invokeOther66:require(file:/Users/user/.embulk/bin/embulk!/embulk/command/embulk_bundle.rb:51)
at Users.user.$_dot_embulk.bin.embulk.embulk.command.embulk_bundle.RUBY$script(file:/Users/user/.embulk/bin/embulk!/embulk/command/embulk_bundle.rb:51)
at java.lang.invoke.MethodHandle.invokeWithArguments(MethodHandle.java:627)
at org.jruby.ir.Compiler$1.load(Compiler.java:111)
at org.jruby.Ruby.runScript(Ruby.java:834)
at org.jruby.Ruby.runNormally(Ruby.java:749)
at org.jruby.Ruby.runNormally(Ruby.java:767)
at org.jruby.Ruby.runFromMain(Ruby.java:580)
at org.jruby.Main.doRunFromMain(Main.java:425)
at org.jruby.Main.internalRun(Main.java:313)
at org.jruby.Main.run(Main.java:242)
at org.jruby.Main.main(Main.java:204)
at org.embulk.cli.Main.main(Main.java:23)
Caused by: java.lang.RuntimeException: com.mysql.jdbc.exceptions.jdbc4.MySQLNonTransientConnectionException: Could not create connection to database server.
at org.embulk.output.jdbc.AbstractJdbcOutputPlugin.begin(AbstractJdbcOutputPlugin.java:397)
at org.embulk.output.jdbc.AbstractJdbcOutputPlugin.transaction(AbstractJdbcOutputPlugin.java:354)
at org.embulk.exec.BulkLoader$4$1$1.transaction(BulkLoader.java:544)
at org.embulk.exec.LocalExecutorPlugin.transaction(LocalExecutorPlugin.java:54)
at org.embulk.exec.BulkLoader$4$1.run(BulkLoader.java:539)
at org.embulk.spi.util.Filters$RecursiveControl.transaction(Filters.java:96)
at org.embulk.spi.util.Filters.transaction(Filters.java:49)
at org.embulk.exec.BulkLoader$4.run(BulkLoader.java:533)
at org.embulk.spi.FileInputRunner$RunnerControl$1$1.run(FileInputRunner.java:126)
at org.embulk.standards.CsvParserPlugin.transaction(CsvParserPlugin.java:225)
at org.embulk.spi.FileInputRunner$RunnerControl$1.run(FileInputRunner.java:120)
at org.embulk.spi.util.Decoders$RecursiveControl.transaction(Decoders.java:77)
at org.embulk.spi.util.Decoders$RecursiveControl$1.run(Decoders.java:73)
at org.embulk.standards.GzipFileDecoderPlugin.transaction(GzipFileDecoderPlugin.java:30)
at org.embulk.spi.util.Decoders$RecursiveControl.transaction(Decoders.java:68)
at org.embulk.spi.util.Decoders.transaction(Decoders.java:33)
at org.embulk.spi.FileInputRunner$RunnerControl.run(FileInputRunner.java:117)
at org.embulk.standards.LocalFileInputPlugin.resume(LocalFileInputPlugin.java:87)
at org.embulk.standards.LocalFileInputPlugin.transaction(LocalFileInputPlugin.java:77)
at org.embulk.spi.FileInputRunner.transaction(FileInputRunner.java:67)
at org.embulk.exec.BulkLoader.doRun(BulkLoader.java:528)
at org.embulk.exec.BulkLoader.access$000(BulkLoader.java:33)
at org.embulk.exec.BulkLoader$1.run(BulkLoader.java:389)
at org.embulk.exec.BulkLoader$1.run(BulkLoader.java:385)
at org.embulk.spi.Exec.doWith(Exec.java:25)
at org.embulk.exec.BulkLoader.run(BulkLoader.java:385)
at org.embulk.EmbulkEmbed.run(EmbulkEmbed.java:180)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.jruby.javasupport.JavaMethod.invokeDirectWithExceptionHandling(JavaMethod.java:453)
at org.jruby.javasupport.JavaMethod.invokeDirect(JavaMethod.java:314)
at org.jruby.java.invokers.InstanceMethodInvoker.call(InstanceMethodInvoker.java:46)
at org.jruby.runtime.callsite.CachingCallSite.cacheAndCall(CachingCallSite.java:338)
at org.jruby.runtime.callsite.CachingCallSite.call(CachingCallSite.java:163)
at org.jruby.ir.interpreter.InterpreterEngine.processCall(InterpreterEngine.java:315)
at org.jruby.ir.interpreter.StartupInterpreterEngine.interpret(StartupInterpreterEngine.java:73)
at org.jruby.ir.interpreter.InterpreterEngine.interpret(InterpreterEngine.java:90)
at org.jruby.internal.runtime.methods.MixedModeIRMethod.INTERPRET_METHOD(MixedModeIRMethod.java:214)
at org.jruby.internal.runtime.methods.MixedModeIRMethod.call(MixedModeIRMethod.java:200)
at org.jruby.internal.runtime.methods.DynamicMethod.call(DynamicMethod.java:205)
at org.jruby.runtime.callsite.CachingCallSite.cacheAndCall(CachingCallSite.java:358)
at org.jruby.runtime.callsite.CachingCallSite.call(CachingCallSite.java:195)
at org.jruby.ir.interpreter.InterpreterEngine.processCall(InterpreterEngine.java:324)
at org.jruby.ir.interpreter.StartupInterpreterEngine.interpret(StartupInterpreterEngine.java:73)
at org.jruby.ir.interpreter.InterpreterEngine.interpret(InterpreterEngine.java:84)
at org.jruby.internal.runtime.methods.MixedModeIRMethod.INTERPRET_METHOD(MixedModeIRMethod.java:179)
at org.jruby.internal.runtime.methods.MixedModeIRMethod.call(MixedModeIRMethod.java:165)
at org.jruby.internal.runtime.methods.DynamicMethod.call(DynamicMethod.java:197)
at org.jruby.runtime.callsite.CachingCallSite.cacheAndCall(CachingCallSite.java:338)
at org.jruby.runtime.callsite.CachingCallSite.call(CachingCallSite.java:163)
at org.jruby.ir.interpreter.InterpreterEngine.processCall(InterpreterEngine.java:315)
at org.jruby.ir.interpreter.StartupInterpreterEngine.interpret(StartupInterpreterEngine.java:73)
at org.jruby.ir.interpreter.Interpreter.INTERPRET_ROOT(Interpreter.java:112)
at org.jruby.ir.interpreter.Interpreter.execute(Interpreter.java:99)
at org.jruby.ir.interpreter.Interpreter.execute(Interpreter.java:35)
at org.jruby.ir.IRTranslator.execute(IRTranslator.java:42)
at org.jruby.Ruby.runInterpreter(Ruby.java:850)
at org.jruby.Ruby.loadFile(Ruby.java:2976)
at org.jruby.runtime.load.LibrarySearcher$ResourceLibrary.load(LibrarySearcher.java:243)
at org.jruby.runtime.load.LibrarySearcher$FoundLibrary.load(LibrarySearcher.java:34)
at org.jruby.runtime.load.LoadService.tryLoadingLibraryOrScript(LoadService.java:885)
at org.jruby.runtime.load.LoadService.smartLoadInternal(LoadService.java:525)
at org.jruby.runtime.load.LoadService.require(LoadService.java:396)
at org.jruby.RubyKernel.requireCommon(RubyKernel.java:963)
at org.jruby.RubyKernel.require19(RubyKernel.java:956)
at org.jruby.RubyKernel$INVOKER$s$1$0$require19.call(RubyKernel$INVOKER$s$1$0$require19.gen)
at org.jruby.internal.runtime.methods.JavaMethod$JavaMethodOneOrNBlock.call(JavaMethod.java:383)
at org.jruby.internal.runtime.methods.AliasMethod.call(AliasMethod.java:61)
at org.jruby.runtime.callsite.CachingCallSite.call(CachingCallSite.java:161)
at org.jruby.ir.interpreter.InterpreterEngine.processCall(InterpreterEngine.java:315)
at org.jruby.ir.interpreter.StartupInterpreterEngine.interpret(StartupInterpreterEngine.java:73)
at org.jruby.ir.interpreter.InterpreterEngine.interpret(InterpreterEngine.java:84)
at org.jruby.internal.runtime.methods.MixedModeIRMethod.INTERPRET_METHOD(MixedModeIRMethod.java:179)
at org.jruby.internal.runtime.methods.MixedModeIRMethod.call(MixedModeIRMethod.java:165)
at org.jruby.internal.runtime.methods.DynamicMethod.call(DynamicMethod.java:197)
at org.jruby.runtime.callsite.CachingCallSite.cacheAndCall(CachingCallSite.java:338)
at org.jruby.runtime.callsite.CachingCallSite.call(CachingCallSite.java:163)
at Users.user.$_dot_embulk.bin.embulk.embulk.command.embulk_bundle.invokeOther66:require(file:/Users/user/.embulk/bin/embulk!/embulk/command/embulk_bundle.rb:51)
at Users.user.$_dot_embulk.bin.embulk.embulk.command.embulk_bundle.RUBY$script(file:/Users/user/.embulk/bin/embulk!/embulk/command/embulk_bundle.rb:51)
at java.lang.invoke.MethodHandle.invokeWithArguments(MethodHandle.java:627)
at org.jruby.ir.Compiler$1.load(Compiler.java:111)
at org.jruby.Ruby.runScript(Ruby.java:834)
at org.jruby.Ruby.runNormally(Ruby.java:749)
at org.jruby.Ruby.runNormally(Ruby.java:767)
at org.jruby.Ruby.runFromMain(Ruby.java:580)
at org.jruby.Main.doRunFromMain(Main.java:425)
at org.jruby.Main.internalRun(Main.java:313)
at org.jruby.Main.run(Main.java:242)
at org.jruby.Main.main(Main.java:204)
at org.embulk.cli.Main.main(Main.java:23)
Caused by: com.mysql.jdbc.exceptions.jdbc4.MySQLNonTransientConnectionException: Could not create connection to database server.
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
at com.mysql.jdbc.Util.handleNewInstance(Util.java:377)
at com.mysql.jdbc.Util.getInstance(Util.java:360)
at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:956)
at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:935)
at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:924)
at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:870)
at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2311)
at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2064)
at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:790)
at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:44)
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
at com.mysql.jdbc.Util.handleNewInstance(Util.java:377)
at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:395)
at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:325)
at org.embulk.output.mysql.MySQLOutputConnector.connect(MySQLOutputConnector.java:30)
at org.embulk.output.mysql.MySQLOutputConnector.connect(MySQLOutputConnector.java:9)
at org.embulk.output.jdbc.AbstractJdbcOutputPlugin.newConnection(AbstractJdbcOutputPlugin.java:246)
at org.embulk.output.jdbc.AbstractJdbcOutputPlugin$1.run(AbstractJdbcOutputPlugin.java:388)
at org.embulk.output.jdbc.AbstractJdbcOutputPlugin$RetryableSQLExecution.call(AbstractJdbcOutputPlugin.java:1088)
at org.embulk.output.jdbc.AbstractJdbcOutputPlugin$RetryableSQLExecution.call(AbstractJdbcOutputPlugin.java:1076)
at org.embulk.spi.util.RetryExecutor.run(RetryExecutor.java:100)
at org.embulk.spi.util.RetryExecutor.runInterruptible(RetryExecutor.java:77)
at org.embulk.output.jdbc.AbstractJdbcOutputPlugin.withRetry(AbstractJdbcOutputPlugin.java:1060)
at org.embulk.output.jdbc.AbstractJdbcOutputPlugin.withRetry(AbstractJdbcOutputPlugin.java:1053)
at org.embulk.output.jdbc.AbstractJdbcOutputPlugin.begin(AbstractJdbcOutputPlugin.java:385)
... 91 more
Caused by: java.lang.NullPointerException
at java.util.Properties$LineReader.readLine(Properties.java:434)
at java.util.Properties.load0(Properties.java:353)
at java.util.Properties.load(Properties.java:341)
at com.mysql.jdbc.TimeUtil.loadTimeZoneMappings(TimeUtil.java:486)
at com.mysql.jdbc.TimeUtil.getCanonicalTimezone(TimeUtil.java:404)
at com.mysql.jdbc.ConnectionImpl.configureTimezone(ConnectionImpl.java:2009)
at com.mysql.jdbc.ConnectionImpl.initializePropsFromServer(ConnectionImpl.java:3286)
at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2278)
... 112 more

Error: java.lang.RuntimeException: com.mysql.jdbc.exceptions.jdbc4.MySQLNonTransientConnectionException: Could not create connection to database server.
```