Endless (logging of) transid failure in btrfsck after chunk-recover with btrfs-progs 3.18 on Linux 3.17.7

Hi,
After running sudo btrfs rescue chunk-recover -y -v /dev/loop0 with 4 unrecoverable chunks (of 619) I'm having trouble with btrfsck which logs

parent transid verify failed on 4210688 wanted 61241 found 7983179 Ignoring transid failure

apparently for ever (let it run for 1 hour which produced the entry > 3.5M times, then killed it). There must be something wrong because the program needs to succeed or fail, right? After aborting btrfsck btrfs-debug-tree and btrfs-zero-log both fail with

Check tree block failed, want=16384, have=0
read block failed check_tree_block
Couldn't read chunk root
unable to open /dev/loop0

Please find attached the output of rescue chunk-recover and btrfsck. The filesystem is on a dd image, mounted via a loop device with losetup. This is the only version of the filesystem I have. I'm running Ubuntu 14.10 amd64. I can't test 3.18.1 and 3.19rc2.

Any help or hints are appreciated.

Best regards,
Kalle