root@ubuntu-phablet:~# system-image-cli --dry-run -vv
[systemimage] Jun 23 17:50:18 2015 (19723) -> [ 1] _cleanup
[systemimage] Jun 23 17:50:18 2015 (19723) -> [ 2] _get_blacklist_1
[systemimage] Jun 23 17:50:18 2015 (19723) Looking for blacklist: https://system-image.ubuntu.com/gpg/blacklist.tar.xz
[systemimage] Jun 23 17:50:19 2015 (19723) [0xb608a1b0] Requesting group download:
https://system-image.ubuntu.com/gpg/blacklist.tar.xz -> /var/lib/system-image/keyring.tar.xz
https://system-image.ubuntu.com/gpg/blacklist.tar.xz.asc -> /var/lib/system-image/keyring.tar.xz.asc
[systemimage] Jun 23 17:50:19 2015 (19723) [0xb608a1b0] Running group download reactor
[systemimage] Jun 23 17:50:20 2015 (19723) [0xb608a1b0] Group download reactor done
[systemimage] Jun 23 17:50:20 2015 (19723) Local blacklist file: /var/lib/system-image/blacklist.tar.xz
[systemimage] Jun 23 17:50:20 2015 (19723) -> [ 3] _get_channel
[systemimage] Jun 23 17:50:20 2015 (19723) Looking for: https://system-image.ubuntu.com/channels.json
[systemimage] Jun 23 17:50:20 2015 (19723) [0xb608a090] Requesting group download:
https://system-image.ubuntu.com/channels.json -> /tmp/system-image-od5dvews/channels.json
https://system-image.ubuntu.com/channels.json.asc -> /tmp/system-image-od5dvews/channels.json.asc
[systemimage] Jun 23 17:50:20 2015 (19723) [0xb608a090] Running group download reactor
[systemimage] Jun 23 17:50:20 2015 (19723) received: 490 of 490 bytes
[systemimage] Jun 23 17:50:20 2015 (19723) received: 490 of 490 bytes
[systemimage] Jun 23 17:50:20 2015 (19723) received: 16874 of 36631 bytes
[systemimage] Jun 23 17:50:20 2015 (19723) received: 36631 of 36631 bytes
[systemimage] Jun 23 17:50:20 2015 (19723) [0xb608a090] Group download reactor done
[systemimage] Jun 23 17:50:21 2015 (19723) Local channels file: /tmp/system-image-od5dvews/channels.json
[systemimage] Jun 23 17:50:21 2015 (19723) got channel: ubuntu-touch/stable/meizu.en
[systemimage] Jun 23 17:50:21 2015 (19723) found channel/device entry: ubuntu-touch/stable/meizu.en/arale
[systemimage] Jun 23 17:50:21 2015 (19723) -> [ 4] _get_index
[systemimage] Jun 23 17:50:21 2015 (19723) [0xb608a090] Requesting group download:
https://system-image.ubuntu.com/ubuntu-touch/stable/meizu.en/arale/index.json -> /tmp/system-image-od5dvews/index.json
https://system-image.ubuntu.com/ubuntu-touch/stable/meizu.en/arale/index.json.asc -> /tmp/system-image-od5dvews/index.json.asc
[systemimage] Jun 23 17:50:21 2015 (19723) [0xb608a090] Running group download reactor
[systemimage] Jun 23 17:50:21 2015 (19723) received: 4197 of 4197 bytes
[systemimage] Jun 23 17:50:21 2015 (19723) received: 4687 of 4687 bytes
[systemimage] Jun 23 17:50:21 2015 (19723) received: 4687 of 4687 bytes
[systemimage] Jun 23 17:50:21 2015 (19723) received: 4687 of 4687 bytes
[systemimage] Jun 23 17:50:21 2015 (19723) [0xb608a090] Group download reactor done
[systemimage] Jun 23 17:50:21 2015 (19723) -> [ 5] _calculate_winner
[systemimage] Jun 23 17:50:21 2015 (19723) WeightedScorer path scores (last one wins):
[ 0] -> 2
[systemimage] Jun 23 17:50:21 2015 (19723) Upgrade path is 2
[systemimage] Jun 23 17:50:21 2015 (19723) -> [ 6] _download_files
Upgrade path is 2