Service not called on ssh push

Hi,

We are currently experiencing an issue with a POST service not being called when a user new changeset is pushed on your service.
After multiple trial, i come to the conclusion it only produce the issue while pushing with the ssh protocol, not the https.

I don't know if it is related, but i have an error message at the end of the ssh-push
pushing to ssh://hg@bitbucket.org/weare/sandbox
searching for changes
remote: adding changesets
remote: adding manifests
remote: adding file changes
remote: added 4 changesets with 4 changes to 2 files
remote: bb/acl: ahsx is allowed. accepted payload.
remote: error: changegroup.last_updated hook raised an exception: exception() got an unexpected keyword argument 'exc_info'

A.