Unable to "composer install"

[linuxd3v]

Loading composer repositories with package information
Installing dependencies (including require-dev)
Your requirements could not be resolved to an installable set of packages.

Problem 1
- Installation request for zf-commons/zfc-base dev-master -> satisfiable by zf-commons/zfc-base[dev-master].
- zf-commons/zfc-user dev-master requires zf-commons/zfc-base 0.* -> satisfiable by zf-commons/zfc-base[0.0.1, 0.1.0, 0.1.1, v0.1.2].
- Can only install one of: zf-commons/zfc-base[dev-master, 0.0.1].
- Can only install one of: zf-commons/zfc-base[dev-master, 0.1.0].
- Can only install one of: zf-commons/zfc-base[dev-master, 0.1.1].
- Can only install one of: zf-commons/zfc-base[v0.1.2, dev-master].
- Installation request for zf-commons/zfc-user dev-master -> satisfiable by zf-commons/zfc-user[dev-master].