-> class D { public String toString() { throw new RuntimeException(); } }
| Added class D

-> new D()
| State engine terminated.
| Restore definitions with: /reload restore
Exception in thread "main" java.lang.RuntimeException
        at REPL.$REPL12$D.toString($REPL12.java:7)
        at jdk.internal.jshell.remote.RemoteAgent.valueString(jdk.jshell@9-internal/RemoteAgent.java:263)
        at jdk.internal.jshell.remote.RemoteAgent.commandLoop(jdk.jshell@9-internal/RemoteAgent.java:137)
        at jdk.internal.jshell.remote.RemoteAgent.main(jdk.jshell@9-internal/RemoteAgent.java:61)
| Expression value is:
| assigned to temporary variable $4 of type D

-> $4
| Error:
| cannot find symbol
| symbol: variable $4
| $4
| ^^