! exec cue fix in.cue --exp=accepted_
cmp stderr out/stderr

-- cue.mod/module.cue --
module: "mod.test"

language: version: "v0.15.0"

-- in.cue --
package foo

a: 1

-- out/stderr --
fix: experiment "accepted_" is already stable as of language version v0.15.0 - cannot apply fix
