老项目，升级了一下myeclipse版本，然后就jetty启动报错，求教是什么原因？

Starting JFinal 3.0
Starting scanner at interval of 5 seconds.
Starting web server on port: 80

2018-09-15 06:57:50
[WARN]-[Thread: Timer-0]-[com.mchange.v2.async.ThreadPoolAsynchronousRunner$DeadlockDetector.run()]: com.mchange.v2.async.ThreadPoolAsynchronousRunner$DeadlockDetector@6c477ebd -- APPARENT DEADLOCK!!! Creating emergency threads for unassigned pending tasks!

2018-09-15 06:57:50
[WARN]-[Thread: Timer-0]-[com.mchange.v2.async.ThreadPoolAsynchronousRunner$DeadlockDetector.run()]: com.mchange.v2.async.ThreadPoolAsynchronousRunner$DeadlockDetector@6c477ebd -- APPARENT DEADLOCK!!! Complete Status: 
	Managed Threads: 3
	Active Threads: 3
	Active Tasks: 
		com.mchange.v2.resourcepool.BasicResourcePool$AcquireTask@175fe628 (com.mchange.v2.async.ThreadPoolAsynchronousRunner$PoolThread-#2)
		com.mchange.v2.resourcepool.BasicResourcePool$AcquireTask@47dcd712 (com.mchange.v2.async.ThreadPoolAsynchronousRunner$PoolThread-#1)
		com.mchange.v2.resourcepool.BasicResourcePool$AcquireTask@204f2da9 (com.mchange.v2.async.ThreadPoolAsynchronousRunner$PoolThread-#0)
	Pending Tasks: 
		com.mchange.v2.resourcepool.BasicResourcePool$AcquireTask@4c3193f1
		com.mchange.v2.resourcepool.BasicResourcePool$AcquireTask@24b742f9
		com.mchange.v2.resourcepool.BasicResourcePool$AcquireTask@572653a
		com.mchange.v2.resourcepool.BasicResourcePool$AcquireTask@5c893258
		com.mchange.v2.resourcepool.BasicResourcePool$AcquireTask@1c678c23
		com.mchange.v2.resourcepool.BasicResourcePool$AcquireTask@259a5dc
		com.mchange.v2.resourcepool.BasicResourcePool$AcquireTask@14145b18
Pool thread stack traces:
	Thread[com.mchange.v2.async.ThreadPoolAsynchronousRunner$PoolThread-#0,5,main]
		java.net.DualStackPlainSocketImpl.connect0(Native Method)
		java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:79)
		java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350)
		java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206)
		java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188)
		java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172)
		java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392)
		java.net.Socket.connect(Socket.java:589)
		java.net.Socket.connect(Socket.java:538)
		java.net.Socket.<init>(Socket.java:434)
		java.net.Socket.<init>(Socket.java:244)
		com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:257)
		com.mysql.jdbc.MysqlIO.<init>(MysqlIO.java:298)
		com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2391)
		com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2428)
		com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2213)
		com.mysql.jdbc.ConnectionImpl.<init>(ConnectionImpl.java:797)
		com.mysql.jdbc.JDBC4Connection.<init>(JDBC4Connection.java:47)
		sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
		sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
		sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
		java.lang.reflect.Constructor.newInstance(Constructor.java:423)
		com.mysql.jdbc.Util.handleNewInstance(Util.java:411)
		com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:389)
		com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:305)
		com.mchange.v2.c3p0.DriverManagerDataSource.getConnection(DriverManagerDataSource.java:134)
		com.mchange.v2.c3p0.WrapperConnectionPoolDataSource.getPooledConnection(WrapperConnectionPoolDataSource.java:182)
		com.mchange.v2.c3p0.WrapperConnectionPoolDataSource.getPooledConnection(WrapperConnectionPoolDataSource.java:171)
		com.mchange.v2.c3p0.impl.C3P0PooledConnectionPool$1PooledConnectionResourcePoolManager.acquireResource(C3P0PooledConnectionPool.java:137)
		com.mchange.v2.resourcepool.BasicResourcePool.doAcquire(BasicResourcePool.java:1014)
		com.mchange.v2.resourcepool.BasicResourcePool.access$800(BasicResourcePool.java:32)
		com.mchange.v2.resourcepool.BasicResourcePool$AcquireTask.run(BasicResourcePool.java:1810)
		com.mchange.v2.async.ThreadPoolAsynchronousRunner$PoolThread.run(ThreadPoolAsynchronousRunner.java:547)
	Thread[com.mchange.v2.async.ThreadPoolAsynchronousRunner$PoolThread-#2,5,main]
		java.net.DualStackPlainSocketImpl.connect0(Native Method)
		java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:79)
		java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350)
		java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206)
		java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188)
		java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172)
		java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392)
		java.net.Socket.connect(Socket.java:589)
		java.net.Socket.connect(Socket.java:538)
		java.net.Socket.<init>(Socket.java:434)
		java.net.Socket.<init>(Socket.java:244)
		com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:257)
		com.mysql.jdbc.MysqlIO.<init>(MysqlIO.java:298)
		com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2391)
		com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2428)
		com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2213)
		com.mysql.jdbc.ConnectionImpl.<init>(ConnectionImpl.java:797)
		com.mysql.jdbc.JDBC4Connection.<init>(JDBC4Connection.java:47)
		sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
		sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
		sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
		java.lang.reflect.Constructor.newInstance(Constructor.java:423)
		com.mysql.jdbc.Util.handleNewInstance(Util.java:411)
		com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:389)
		com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:305)
		com.mchange.v2.c3p0.DriverManagerDataSource.getConnection(DriverManagerDataSource.java:134)
		com.mchange.v2.c3p0.WrapperConnectionPoolDataSource.getPooledConnection(WrapperConnectionPoolDataSource.java:182)
		com.mchange.v2.c3p0.WrapperConnectionPoolDataSource.getPooledConnection(WrapperConnectionPoolDataSource.java:171)
		com.mchange.v2.c3p0.impl.C3P0PooledConnectionPool$1PooledConnectionResourcePoolManager.acquireResource(C3P0PooledConnectionPool.java:137)
		com.mchange.v2.resourcepool.BasicResourcePool.doAcquire(BasicResourcePool.java:1014)
		com.mchange.v2.resourcepool.BasicResourcePool.access$800(BasicResourcePool.java:32)
		com.mchange.v2.resourcepool.BasicResourcePool$AcquireTask.run(BasicResourcePool.java:1810)
		com.mchange.v2.async.ThreadPoolAsynchronousRunner$PoolThread.run(ThreadPoolAsynchronousRunner.java:547)
	Thread[com.mchange.v2.async.ThreadPoolAsynchronousRunner$PoolThread-#1,5,main]
		java.net.DualStackPlainSocketImpl.connect0(Native Method)
		java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:79)
		java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350)
		java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206)
		java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188)
		java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172)
		java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392)
		java.net.Socket.connect(Socket.java:589)
		java.net.Socket.connect(Socket.java:538)
		java.net.Socket.<init>(Socket.java:434)
		java.net.Socket.<init>(Socket.java:244)
		com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:257)
		com.mysql.jdbc.MysqlIO.<init>(MysqlIO.java:298)
		com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2391)
		com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2428)
		com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2213)
		com.mysql.jdbc.ConnectionImpl.<init>(ConnectionImpl.java:797)
		com.mysql.jdbc.JDBC4Connection.<init>(JDBC4Connection.java:47)
		sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
		sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
		sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
		java.lang.reflect.Constructor.newInstance(Constructor.java:423)
		com.mysql.jdbc.Util.handleNewInstance(Util.java:411)
		com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:389)
		com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:305)
		com.mchange.v2.c3p0.DriverManagerDataSource.getConnection(DriverManagerDataSource.java:134)
		com.mchange.v2.c3p0.WrapperConnectionPoolDataSource.getPooledConnection(WrapperConnectionPoolDataSource.java:182)
		com.mchange.v2.c3p0.WrapperConnectionPoolDataSource.getPooledConnection(WrapperConnectionPoolDataSource.java:171)
		com.mchange.v2.c3p0.impl.C3P0PooledConnectionPool$1PooledConnectionResourcePoolManager.acquireResource(C3P0PooledConnectionPool.java:137)
		com.mchange.v2.resourcepool.BasicResourcePool.doAcquire(BasicResourcePool.java:1014)
		com.mchange.v2.resourcepool.BasicResourcePool.access$800(BasicResourcePool.java:32)
		com.mchange.v2.resourcepool.BasicResourcePool$AcquireTask.run(BasicResourcePool.java:1810)
		com.mchange.v2.async.ThreadPoolAsynchronousRunner$PoolThread.run(ThreadPoolAsynchronousRunner.java:547)


Exception in thread "Task-Thread-for-com.mchange.v2.async.ThreadPerTaskAsynchronousRunner@2f50af30" java.lang.IllegalAccessError: class sun.reflect.GeneratedConstructorAccessor8 cannot access its superclass sun.reflect.ConstructorAccessorImpl
	at sun.misc.Unsafe.defineClass(Native Method)
	at sun.reflect.ClassDefiner.defineClass(ClassDefiner.java:63)
	at sun.reflect.MethodAccessorGenerator$1.run(MethodAccessorGenerator.java:399)
	at sun.reflect.MethodAccessorGenerator$1.run(MethodAccessorGenerator.java:394)
	at java.security.AccessController.doPrivileged(Native Method)
	at sun.reflect.MethodAccessorGenerator.generate(MethodAccessorGenerator.java:393)
	at sun.reflect.MethodAccessorGenerator.generateConstructor(MethodAccessorGenerator.java:92)
	at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:55)
	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:411)
	at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:389)
	at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:305)
	at com.mchange.v2.c3p0.DriverManagerDataSource.getConnection(DriverManagerDataSource.java:134)
	at com.mchange.v2.c3p0.WrapperConnectionPoolDataSource.getPooledConnection(WrapperConnectionPoolDataSource.java:182)
	at com.mchange.v2.c3p0.WrapperConnectionPoolDataSource.getPooledConnection(WrapperConnectionPoolDataSource.java:171)
	at com.mchange.v2.c3p0.impl.C3P0PooledConnectionPool$1PooledConnectionResourcePoolManager.acquireResource(C3P0PooledConnectionPool.java:137)
	at com.mchange.v2.resourcepool.BasicResourcePool.doAcquire(BasicResourcePool.java:1014)
	at com.mchange.v2.resourcepool.BasicResourcePool.access$800(BasicResourcePool.java:32)
	at com.mchange.v2.resourcepool.BasicResourcePool$AcquireTask.run(BasicResourcePool.java:1810)
	at com.mchange.v2.async.ThreadPerTaskAsynchronousRunner$TaskThread.run(ThreadPerTaskAsynchronousRunner.java:255)
Exception in thread "com.mchange.v2.async.ThreadPoolAsynchronousRunner$PoolThread-#0" java.lang.IllegalAccessError: class sun.reflect.GeneratedConstructorAccessor13 cannot access its superclass sun.reflect.ConstructorAccessorImpl
	at sun.misc.Unsafe.defineClass(Native Method)
	at sun.reflect.ClassDefiner.defineClass(ClassDefiner.java:63)
	at sun.reflect.MethodAccessorGenerator$1.run(MethodAccessorGenerator.java:399)
	at sun.reflect.MethodAccessorGenerator$1.run(MethodAccessorGenerator.java:394)
	at java.security.AccessController.doPrivileged(Native Method)
	at sun.reflect.MethodAccessorGenerator.generate(MethodAccessorGenerator.java:393)
	at sun.reflect.MethodAccessorGenerator.generateConstructor(MethodAccessorGenerator.java:92)
	at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:55)
	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:411)
	at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:389)
	at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:305)
	at com.mchange.v2.c3p0.DriverManagerDataSource.getConnection(DriverManagerDataSource.java:134)
	at com.mchange.v2.c3p0.WrapperConnectionPoolDataSource.getPooledConnection(WrapperConnectionPoolDataSource.java:182)
	at com.mchange.v2.c3p0.WrapperConnectionPoolDataSource.getPooledConnection(WrapperConnectionPoolDataSource.java:171)
	at com.mchange.v2.c3p0.impl.C3P0PooledConnectionPool$1PooledConnectionResourcePoolManager.acquireResource(C3P0PooledConnectionPool.java:137)
	at com.mchange.v2.resourcepool.BasicResourcePool.doAcquire(BasicResourcePool.java:1014)
	at com.mchange.v2.resourcepool.BasicResourcePool.access$800(BasicResourcePool.java:32)
	at com.mchange.v2.resourcepool.BasicResourcePool$AcquireTask.run(BasicResourcePool.java:1810)
	at com.mchange.v2.async.ThreadPoolAsynchronousRunner$PoolThread.run(ThreadPoolAsynchronousRunner.java:547)
Exception in thread "com.mchange.v2.async.ThreadPoolAsynchronousRunner$PoolThread-#1" java.lang.IllegalAccessError: class sun.reflect.GeneratedConstructorAccessor14 cannot access its superclass sun.reflect.ConstructorAccessorImpl
	at sun.misc.Unsafe.defineClass(Native Method)
	at sun.reflect.ClassDefiner.defineClass(ClassDefiner.java:63)
	at sun.reflect.MethodAccessorGenerator$1.run(MethodAccessorGenerator.java:399)
	at sun.reflect.MethodAccessorGenerator$1.run(MethodAccessorGenerator.java:394)
	at java.security.AccessController.doPrivileged(Native Method)
	at sun.reflect.MethodAccessorGenerator.generate(MethodAccessorGenerator.java:393)
	at sun.reflect.MethodAccessorGenerator.generateConstructor(MethodAccessorGenerator.java:92)
	at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:55)
	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:411)
	at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:389)
	at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:305)
	at com.mchange.v2.c3p0.DriverManagerDataSource.getConnection(DriverManagerDataSource.java:134)
	at com.mchange.v2.c3p0.WrapperConnectionPoolDataSource.getPooledConnection(WrapperConnectionPoolDataSource.java:182)
	at com.mchange.v2.c3p0.WrapperConnectionPoolDataSource.getPooledConnection(WrapperConnectionPoolDataSource.java:171)
	at com.mchange.v2.c3p0.impl.C3P0PooledConnectionPool$1PooledConnectionResourcePoolManager.acquireResource(C3P0PooledConnectionPool.java:137)
	at com.mchange.v2.resourcepool.BasicResourcePool.doAcquire(BasicResourcePool.java:1014)
	at com.mchange.v2.resourcepool.BasicResourcePool.access$800(BasicResourcePool.java:32)
	at com.mchange.v2.resourcepool.BasicResourcePool$AcquireTask.run(BasicResourcePool.java:1810)
	at com.mchange.v2.async.ThreadPoolAsynchronousRunner$PoolThread.run(ThreadPoolAsynchronousRunner.java:547)
Exception in thread "com.mchange.v2.async.ThreadPoolAsynchronousRunner$PoolThread-#2" java.lang.IllegalAccessError: class sun.reflect.GeneratedConstructorAccessor12 cannot access its superclass sun.reflect.ConstructorAccessorImpl
	at sun.misc.Unsafe.defineClass(Native Method)
	at sun.reflect.ClassDefiner.defineClass(ClassDefiner.java:63)
	at sun.reflect.MethodAccessorGenerator$1.run(MethodAccessorGenerator.java:399)
	at sun.reflect.MethodAccessorGenerator$1.run(MethodAccessorGenerator.java:394)
	at java.security.AccessController.doPrivileged(Native Method)
	at sun.reflect.MethodAccessorGenerator.generate(MethodAccessorGenerator.java:393)
	at sun.reflect.MethodAccessorGenerator.generateConstructor(MethodAccessorGenerator.java:92)
	at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:55)
	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:411)
	at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:389)
	at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:305)
	at com.mchange.v2.c3p0.DriverManagerDataSource.getConnection(DriverManagerDataSource.java:134)
	at com.mchange.v2.c3p0.WrapperConnectionPoolDataSource.getPooledConnection(WrapperConnectionPoolDataSource.java:182)
	at com.mchange.v2.c3p0.WrapperConnectionPoolDataSource.getPooledConnection(WrapperConnectionPoolDataSource.java:171)
	at com.mchange.v2.c3p0.impl.C3P0PooledConnectionPool$1PooledConnectionResourcePoolManager.acquireResource(C3P0PooledConnectionPool.java:137)
	at com.mchange.v2.resourcepool.BasicResourcePool.doAcquire(BasicResourcePool.java:1014)
	at com.mchange.v2.resourcepool.BasicResourcePool.access$800(BasicResourcePool.java:32)
	at com.mchange.v2.resourcepool.BasicResourcePool$AcquireTask.run(BasicResourcePool.java:1810)
	at com.mchange.v2.async.ThreadPoolAsynchronousRunner$PoolThread.run(ThreadPoolAsynchronousRunner.java:547)