thufir@dur:~/NetBeansProjects/threadedExecTelnet$
thufir@dur:~/NetBeansProjects/threadedExecTelnet$ gradle build

> Task :compileJava FAILED
/home/thufir/NetBeansProjects/threadedExecTelnet/src/main/java/net/bounceme/dur/mud/CommandMaker.java:22: error: cannot find symbol
        Set<String> stringSet = objectSet.stream().map(o -> convertToString(o)).collect(Collectors.toSet());
                                                            ^
  symbol:   method convertToString(Object)
  location: class CommandMaker
/home/thufir/NetBeansProjects/threadedExecTelnet/src/main/java/net/bounceme/dur/mud/CommandMaker.java:22: error: incompatible types: inference variable T has incompatible bounds
        Set<String> stringSet = objectSet.stream().map(o -> convertToString(o)).collect(Collectors.toSet());
                                                                                       ^
    equality constraints: String
    lower bounds: Object
  where T is a type-variable:
    T extends Object declared in method <T>toSet()
2 errors

FAILURE: Build failed with an exception.

* What went wrong:
Execution failed for task ':compileJava'.
> Compilation failed; see the compiler error output for details.

* Try:
Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output. Run with --scan to get full insights.

* Get more help at https://help.gradle.org

BUILD FAILED in 858ms
1 actionable task: 1 executed
thufir@dur:~/NetBeansProjects/threadedExecTelnet$
thufir@dur:~/NetBeansProjects/threadedExecTelnet$ java -version
openjdk version "14.0.1" 2020-04-14
OpenJDK Runtime Environment AdoptOpenJDK (build 14.0.1+7)
OpenJDK 64-Bit Server VM AdoptOpenJDK (build 14.0.1+7, mixed mode, sharing)
thufir@dur:~/NetBeansProjects/threadedExecTelnet$
thufir@dur:~/NetBeansProjects/threadedExecTelnet$ javac -version
javac 14.0.1
thufir@dur:~/NetBeansProjects/threadedExecTelnet$
thufir@dur:~/NetBeansProjects/threadedExecTelnet$ gradle -version

------------------------------------------------------------
Gradle 6.4.1
------------------------------------------------------------

Build time:   2020-05-15 19:43:40 UTC
Revision:     1a04183c502614b5c80e33d603074e0b4a2777c5

Kotlin:       1.3.71
Groovy:       2.5.10
Ant:          Apache Ant(TM) version 1.10.7 compiled on September 1 2019
JVM:          14.0.1 (AdoptOpenJDK 14.0.1+7)
OS:           Linux 5.4.0-29-generic amd64

thufir@dur:~/NetBeansProjects/threadedExecTelnet$