NoSuchMethodError when creating implicit validator

[buildreactive]

I'm getting the following error:

java.lang.NoSuchMethodError: scala.collection.immutable.$colon$colon.tl$1()Lscala/collection/immutable/List;
	at com.wix.accord.transform.FunctionDescriber$class.describeFunction(ExpressionDescriber.scala:145)
	at com.wix.accord.transform.ValidationTransform.describeFunction(ValidationTransform.scala:24)
	at com.wix.accord.transform.ValidationTransform.<init>(ValidationTransform.scala:36)
	at com.wix.accord.transform.ValidationTransform$.apply(ValidationTransform.scala:240)

When attempting to create the following validator:

object foo {
	implicit val shipValidator = validator[Ship] { p =>
		p.summary.code.length is between(1, 4) // The expression being validated is resolved automatically, see below
		p.summary.code should matchRegex(".*")
		p.summary.paxCapacity as "ship code" should be > 5 // You can also explicitly describe the expression being validated
	}
}

For the following class:

case class Ship(
	summary: ShipSummary,
	detail: ShipDetail,
	decks: Decks,
	fireZones: FireZones,
	shipsTime: Option[Instant]
) {
	def safeId = summary.id.getOrElse(UUID.randomUUID())
}

object Ship {
	type LegacyID = Map[String, String]
	type Attributes = Map[String, String]
	//... some other stuff
	implicit val optionString: Format[Ship] = Json.format
}

[holograph]

Thanks for reporting, I'll look into it shortly (things are a little sluggish these days because of the transfer of ownership, but will sort themselves out soon)

[holograph]

I can't seem to reproduce this; can you specify which versions of Accord, Scala and JDK you're using?

[holograph]

Perhaps you are compiling with Scala 2.12.5 with JDK 9/10? It has a known regression with macros: https://github.com/scala/scala/releases/tag/v2.12.5

[buildreactive]

Nope. 12.2.6 and JDK 8.

[holograph]

@zbeckman Hold on, is this at compile or runtime?