force uid/gid 0
force uid/gid 0

fly execute is failing in bosh-testflight with:

    [e][fly] /bin/tar: ./file-2: Cannot change ownership to uid 4294967294, gid 4294967294: Invalid argument
    [e][fly] /bin/tar: .: Cannot change ownership to uid 4294967294, gid 4294967294: Invalid argument
    [e][fly] /bin/tar: Exiting with failure status due to previous errors
    [e][fly] panic: exit status 2
    [e][fly]
    [e][fly] goroutine 10 [running]:
    [e][fly] panic(0xb085e0, 0xc82022ae20)
    [e][fly] 	/usr/local/go/src/runtime/panic.go:464 +0x3ff
    [e][fly] github.com/concourse/fly/commands/internal/executehelpers.Download(0x7fb772052148, 0xc820128a80, 0x7fff0410ad04, 0x8, 0xc820156960, 0x27, 0xc820156b10, 0x24, 0xc8201583c0, 0x49, ...)
    [e][fly] 	/tmp/build/4eebacb5/concourse/src/github.com/concourse/fly/commands/internal/executehelpers/downloads.go:34 +0x6cd
    [e][fly] github.com/concourse/fly/commands.(*ExecuteCommand).Execute.func2(0x7fb772052148, 0xc820128a80, 0x7fff0410ad04, 0x8, 0xc820156960, 0x27, 0xc820156b10, 0x24, 0xc8201583c0, 0x49, ...)
    [e][fly] 	/tmp/build/4eebacb5/concourse/src/github.com/concourse/fly/commands/execute.go:103 +0x56
    [e][fly] created by github.com/concourse/fly/commands.(*ExecuteCommand).Execute
    [e][fly] 	/tmp/build/4eebacb5/concourse/src/github.com/concourse/fly/commands/execute.go:107 +0xd10
    [e][fly]
    [e][fly] gzip: stdin: unexpected end of file
    [e][fly] /bin/tar: Child returned status 1
    [e][fly] /bin/tar: Error is not recoverable: exiting now

let's see if this is the cause. previously used busybox tar which
perhaps didn't preserve user/group permissions, which may explain why it
worked before

concourse/archive-resource