use iterations rather than time because first is slow

Author: IanButterworth

test/pkg.jl

@@ -371,7 +371,7 @@ temp_pkg_dir() do project_path
         for i in 1:Sys.CPU_THREADS
             iob = IOBuffer()
             t = @async run(pipeline(`$(Base.julia_cmd()) --project="$(pkgdir(Pkg))"
-                -e "import Pkg; t = Timer(10); while isopen(t) Pkg.activate(temp = true); Pkg.add(\"Random\"); Pkg.Types.EnvCache(); end"`,
+                -e "import Pkg; for i in 1:50 Pkg.activate(temp = true); Pkg.add(\"Random\", io = devnull); Pkg.Types.EnvCache(); end"`,
                 stderr = iob, stdout = devnull))
             push!(tasks, t)
             push!(iobs, iob)