The environment used is bionic/4.15.0-106-generic
$ dpkg -l | grep bcache-tools ii bcache-tools 1.0.8-2build1 amd64 bcache userspace tools
The environment used is bionic/ 4.15.0- 106-generic
$ dpkg -l | grep bcache-tools
ii bcache-tools 1.0.8-2build1 amd64 bcache userspace tools