所以我试图让工头跑步，但是在启动后几分钟它就会出现以下错误：
/usr/lib/ruby/gems/1.9.1/gems/foreman-0.19.0/lib/foreman/engine.rb:117:in `eof?': Input/output error - /dev/pts/8 (Errno::EIO)
from /usr/lib/ruby/gems/1.9.1/gems/foreman-0.19.0/lib/foreman/engine.rb:117:in `block (2 levels) in run'
from /usr/lib/ruby/gems/1.9.1/gems/foreman-0.19.0/lib/foreman/engine.rb:115:in `spawn'
from /usr/lib/ruby/gems/1.9.1/gems/foreman-0.19.0/lib/foreman/engine.rb:115:in `block in run'
from /usr/lib/ruby/gems/1.9.1/gems/foreman-0.19.0/lib/foreman/engine.rb:114:in `chdir'
from /usr/lib/ruby/gems/1.9.1/gems/foreman-0.19.0/lib/foreman/engine.rb:114:in `run'
from /usr/lib/ruby/gems/1.9.1/gems/foreman-0.19.0/lib/foreman/engine.rb:102:in `block in fork_individual'
from /usr/lib/ruby/gems/1.9.1/gems/foreman-0.19.0/lib/foreman/engine.rb:101:in `fork'
from /usr/lib/ruby/gems/1.9.1/gems/foreman-0.19.0/lib/foreman/engine.rb:101:in `fork_individual'
from /usr/lib/ruby/gems/1.9.1/gems/foreman-0.19.0/lib/foreman/engine.rb:91:in `block in fork'
from /usr/lib/ruby/gems/1.9.1/gems/foreman-0.19.0/lib/foreman/engine.rb:90:in `upto'
from /usr/lib/ruby/gems/1.9.1/gems/foreman-0.19.0/lib/foreman/engine.rb:90:in `fork'
from /usr/lib/ruby/gems/1.9.1/gems/foreman-0.19.0/lib/foreman/engine.rb:59:in `block in start'
from /usr/lib/ruby/gems/1.9.1/gems/foreman-0.19.0/lib/foreman/engine.rb:58:in `each'
from /usr/lib/ruby/gems/1.9.1/gems/foreman-0.19.0/lib/foreman/engine.rb:58:in `start'
from /usr/lib/ruby/gems/1.9.1/gems/foreman-0.19.0/lib/foreman/cli.rb:23:in `start'
from /usr/lib/ruby/gems/1.9.1/gems/thor-0.14.6/lib/thor/task.rb:22:in `run'
from /usr/lib/ruby/gems/1.9.1/gems/thor-0.14.6/lib/thor/invocation.rb:118:in `invoke_task'
from /usr/lib/ruby/gems/1.9.1/gems/thor-0.14.6/lib/thor.rb:263:in `dispatch'
from /usr/lib/ruby/gems/1.9.1/gems/thor-0.14.6/lib/thor/base.rb:389:in `start'
from /usr/lib/ruby/gems/1.9.1/gems/foreman-0.19.0/bin/foreman:7:in `<top (required)>'
from /usr/bin/foreman:19:in `load'
from /usr/bin/foreman:19:in `<main>'
21:35:17 worker.1 | process terminated
21:35:17 system | sending SIGTERM to all processes
21:35:20 system | sending SIGKILL to all processes
任何想法？