I don't know why this happens, but portmaster loops this endlessly. Resulting in this (the output is long). When looking at this it seems that the command is repeated and started over again, resulting in this mess. I don't know why this happened and at the moment I don't know how to resolve this since I've never this type of error before.
Code:
===>>> Build/Install for security/heimdal exiting due to signal
===>>> Build/Install for ftp/curl exiting due to signal
===>>> Build/Install for devel/cmake exiting due to signal
===>>> Build/Install for databases/mysql55-client exiting due to signal
===>>> Build/Install for security/cyrus-sasl2 exiting due to signal
===>>> Build/Install for net/openldap24-sasl-client exiting due to signal
===>>> Build/Install for security/heimdal exiting due to signal
===>>> Build/Install for ftp/curl exiting due to signal
===>>> Build/Install for devel/cmake exiting due to signal
===>>> Build/Install for databases/mysql55-client exiting due to signal
===>>> Build/Install for security/cyrus-sasl2 exiting due to signal
===>>> Build/Install for net/openldap24-sasl-client exiting due to signal
===>>> Build/Install for security/heimdal exiting due to signal
===>>> Build/Install for ftp/curl exiting due to signal
===>>> Build/Install for devel/cmake exiting due to signal
===>>> Build/Install for databases/mysql55-client exiting due to signal
===>>> Build/Install for security/cyrus-sasl2 exiting due to signal
===>>> Build/Install for net/openldap24-sasl-client exiting due to signal
===>>> Build/Install for security/heimdal exiting due to signal
===>>> Build/Install for ftp/curl exiting due to signal
===>>> Build/Install for devel/cmake exiting due to signal
===>>> Build/Install for databases/mysql55-client exiting due to signal
===>>> Build/Install for security/cyrus-sasl2 exiting due to signal
===>>> Build/Install for net/openldap24-sasl-client exiting due to signal
===>>> Build/Install for security/heimdal exiting due to signal
===>>> Build/Install for ftp/curl exiting due to signal
===>>> Build/Install for devel/cmake exiting due to signal
===>>> Build/Install for databases/mysql55-client exiting due to signal
[...]