error - kotlin.txt

"/Users/johndpope/Documents/8secWorkspace/coroutines-examples/examples/util/" && kotlinc log.kt -include-runtime -d log.jar && java -jar log.jar
no main manifest attribute, in log.jar

[Done] exited with code=1 in 6.087 seconds

[Running] cd "/Users/johndpope/Documents/8secWorkspace/coroutines-examples/examples/suspendingSequence/" && kotlinc suspendingSequence-example.kt -include-runtime -d suspendingSequence-example.jar && java -jar suspendingSequence-example.jar
suspendingSequence-example.kt:3:8: error: unresolved reference: context
import context.*
       ^
suspendingSequence-example.kt:4:8: error: unresolved reference: delay
import delay.*
       ^
suspendingSequence-example.kt:5:8: error: unresolved reference: run
import run.*
       ^
suspendingSequence-example.kt:6:8: error: unresolved reference: util
import util.*
       ^
suspendingSequence-example.kt:10:19: error: unresolved reference: newSingleThreadContext
    val context = newSingleThreadContext("MyThread")
                  ^
suspendingSequence-example.kt:11:5: error: unresolved reference: runBlocking
    runBlocking(context) {
    ^
suspendingSequence-example.kt:13:19: error: unresolved reference: suspendingSequence
        val seq = suspendingSequence(context) {
                  ^
suspendingSequence-example.kt:14:13: error: unresolved reference: log
            log("Starting generator")
            ^
suspendingSequence-example.kt:16:17: error: unresolved reference: log
                log("Generator yields $i")
                ^
suspendingSequence-example.kt:17:17: error: unresolved reference: yield
                yield(i)
                ^
suspendingSequence-example.kt:19:17: error: unresolved reference: log
                log("Generator goes to sleep for $generatorSleep ms")
                ^
suspendingSequence-example.kt:20:17: error: unresolved reference: delay
                delay(generatorSleep)
                ^
suspendingSequence-example.kt:22:13: error: unresolved reference: log
            log("Generator is done")
            ^
suspendingSequence-example.kt:28:13: error: unresolved reference: log
            log("Consumer got value = $value")
            ^
suspendingSequence-example.kt:30:13: error: unresolved reference: log
            log("Consumer goes to sleep for $consumerSleep ms")
            ^
suspendingSequence-example.kt:31:13: error: unresolved reference: delay
            delay(consumerSleep)
            ^

[Done] exited with code=1 in 5.882 seconds

[Running] cd "/Users/johndpope/Documents/8secWorkspace/coroutines-examples/examples/channel/" && kotlinc channel-example-1.kt -include-runtime -d channel-example-1.jar && java -jar channel-example-1.jar
channel-example-1.kt:4:8: error: unresolved reference: delay
import delay.*
       ^
channel-example-1.kt:10:9: error: unresolved reference: delay
        delay(100)
        ^
channel-example-1.kt:15:33: error: unresolved reference: mainBlocking
fun main(args: Array<String>) = mainBlocking {
                                ^
channel-example-1.kt:16:5: error: unresolved reference: go
    go { say("world") }
    ^
channel-example-1.kt:16:10: error: suspend function 'say' should be called only from a coroutine or another suspend function
    go { say("world") }
         ^
channel-example-1.kt:17:5: error: suspend function 'say' should be called only from a coroutine or another suspend function
    say("hello")
    ^

[Done] exited with code=1 in 4.855 seconds

I'm clicking runcode