Problem running Fabric from within a virtualenv about fabric-scripts HOT 4 CLOSED

$ python
>>> import paramiko
>>> paramiko.common.logging.basicConfig(level=paramiko.common.DEBUG)
>>> h = paramiko.SSHClient()
>>> h.connect('jumpbox.integration.publishing.service.gov.uk', username='alexmuller', key_filename='~/.ssh/id_rsa.pub')
DEBUG:paramiko.transport:starting thread (client mode): 0xf4d4ad0L
INFO:paramiko.transport:Connected (version 2.0, client OpenSSH_6.6.1p1)
DEBUG:paramiko.transport:kex algos:['[email protected]', 'ecdh-sha2-nistp256', 'ecdh-sha2-nistp384', 'ecdh-sha2-nistp521', 'diffie-hellman-group-exchange-sha256', 'diffie-hellman-group-exchange-sha1', 'diffie-hellman-group14-sha1', 'diffie-hellman-group1-sha1'] server key:['ssh-rsa', 'ssh-dss'] client encrypt:['aes128-ctr', 'aes192-ctr', 'aes256-ctr', 'arcfour256', 'arcfour128', '[email protected]', '[email protected]', '[email protected]', 'aes128-cbc', '3des-cbc', 'blowfish-cbc', 'cast128-cbc', 'aes192-cbc', 'aes256-cbc', 'arcfour', '[email protected]'] server encrypt:['aes128-ctr', 'aes192-ctr', 'aes256-ctr', 'arcfour256', 'arcfour128', '[email protected]', '[email protected]', '[email protected]', 'aes128-cbc', '3des-cbc', 'blowfish-cbc', 'cast128-cbc', 'aes192-cbc', 'aes256-cbc', 'arcfour', '[email protected]'] client mac:['[email protected]', '[email protected]', '[email protected]', '[email protected]', '[email protected]', '[email protected]', '[email protected]', '[email protected]', '[email protected]', 'hmac-md5', 'hmac-sha1', '[email protected]', '[email protected]', 'hmac-sha2-256', 'hmac-sha2-512', 'hmac-ripemd160', '[email protected]', 'hmac-sha1-96', 'hmac-md5-96'] server mac:['[email protected]', '[email protected]', '[email protected]', '[email protected]', '[email protected]', '[email protected]', '[email protected]', '[email protected]', '[email protected]', 'hmac-md5', 'hmac-sha1', '[email protected]', '[email protected]', 'hmac-sha2-256', 'hmac-sha2-512', 'hmac-ripemd160', '[email protected]', 'hmac-sha1-96', 'hmac-md5-96'] client compress:['none', '[email protected]'] server compress:['none', '[email protected]'] client lang:[''] server lang:[''] kex follows?False
DEBUG:paramiko.transport:Ciphers agreed: local=aes128-ctr, remote=aes128-ctr
DEBUG:paramiko.transport:using kex diffie-hellman-group1-sha1; server key type ssh-rsa; cipher: local aes128-ctr, remote aes128-ctr; mac: local hmac-sha1, remote hmac-sha1; compression: local none, remote none
Illegal instruction: 4