Cannot suppress warning on destructuring assignment

[mwisnicki]

Reproduction steps

Scala version: 2.13.16

@nowarn("cat=other-match-analysis")
val Seq(a, b) = Seq(1,2)

Problem

With -Xfatal-warnings this fails.

match may not be exhaustive.
[error] Applicable -Wconf / @nowarn filters for this fatal warning: msg=<part of the message>, cat=other-match-analysis, site=Example
[error]       val Seq(a, b) = Seq(1,2)
[error]                          ^

[mwisnicki]

It works when I put @nowarn on onclosing method or type.

[som-snytt]

This warns once:

//> using options -Xlint

import annotation._

class C {
  val Seq(x, y) = Seq(1, 2)
  val Seq(a, b) = Seq(1, 2): @nowarn("cat=other-match-analysis")

  def f(): Unit = {
    val Seq(a, b) = Seq(1, 2): @nowarn("cat=other-match-analysis")
    ()
  }
}