c231193ssh@dorn.timmeserver.de:/.ssh$ ssh -Tv -I ~/.ssh/id_rsa git@bitbucket.org
OpenSSH_7.2p2 Debian-4, OpenSSL 1.0.2g  1 Mar 2016
debug1: Connecting to bitbucket.org [104.192.143.3] port 22.
debug1: Connection established.
dlopen /home/c231193ssh/.ssh/id_rsa failed: /home/c231193ssh/.ssh/id_rsa: invalid ELF header
debug1: key_load_public: No such file or directory
debug1: identity file /.ssh/id_rsa type -1
debug1: key_load_public: No such file or directory
debug1: identity file /.ssh/id_rsa-cert type -1
debug1: key_load_public: No such file or directory
debug1: identity file /.ssh/id_dsa type -1
debug1: key_load_public: No such file or directory
debug1: identity file /.ssh/id_dsa-cert type -1
debug1: key_load_public: No such file or directory
debug1: identity file /.ssh/id_ecdsa type -1
debug1: key_load_public: No such file or directory
debug1: identity file /.ssh/id_ecdsa-cert type -1
debug1: key_load_public: No such file or directory
debug1: identity file /.ssh/id_ed25519 type -1
debug1: key_load_public: No such file or directory
debug1: identity file /.ssh/id_ed25519-cert type -1
debug1: Enabling compatibility mode for protocol 2.0
debug1: Local version string SSH-2.0-OpenSSH_7.2p2 Debian-4
debug1: Remote protocol version 2.0, remote software version conker_1.0.268-723a194 app-127
debug1: no match: conker_1.0.268-723a194 app-127
debug1: Authenticating to bitbucket.org:22 as 'git'
debug1: SSH2_MSG_KEXINIT sent
debug1: SSH2_MSG_KEXINIT received
debug1: kex: algorithm: curve25519-sha256@libssh.org
debug1: kex: host key algorithm: ssh-rsa
debug1: kex: server->client cipher: aes128-ctr MAC: hmac-sha2-256 compression: none
debug1: kex: client->server cipher: aes128-ctr MAC: hmac-sha2-256 compression: none
debug1: expecting SSH2_MSG_KEX_ECDH_REPLY
debug1: Server host key: ssh-rsa SHA256:zzXQOXSRBEiUtuE8AikJYKwbHaxvSc0ojez9YXaGp1A
debug1: Host 'bitbucket.org' is known and matches the RSA host key.
debug1: Found key in /.ssh/known_hosts:1
debug1: rekey after 4294967296 blocks
debug1: SSH2_MSG_NEWKEYS sent
debug1: expecting SSH2_MSG_NEWKEYS
debug1: rekey after 4294967296 blocks
debug1: SSH2_MSG_NEWKEYS received
debug1: SSH2_MSG_SERVICE_ACCEPT received
debug1: Authentications that can continue: publickey
debug1: Next authentication method: publickey
debug1: Trying private key: /.ssh/id_rsa
debug1: Trying private key: /.ssh/id_dsa
debug1: Trying private key: /.ssh/id_ecdsa
debug1: Trying private key: /.ssh/id_ed25519
debug1: No more authentication methods to try.
Permission denied (publickey).