title: An Hob ERROR: Timeout while attempting to communicate with bitbake server
body: <p>I used hob edited recipes (added iptables,curl,python,tar..)  based on image  core-image-full-cmdline. Then build packages,and all succeeded. When I build Image,occured an error:</p>
  
  <pre><code>Hob found an error
  hob Exception-
  </code></pre>
  
  <p>And the message in the log file like below:</p>
  
  <pre><code>ERROR: Timeout while attempting to communicate with bitbake server
  </code></pre>
  
  <p>Can someone tell me what the <strong>bitbake server</strong> is ?
  I would welcome any helpful suggestions on how to handle it.
  Thanks a lot!</p>
  
  <p><strong>The full log file is here</strong>:</p>
  
  <pre><code>NOTE: Resolving any missing task queue dependencies
  
  Build Configuration:
  BB_VERSION        = "1.26.0"
  BUILD_SYS         = "x86_64-linux"
  NATIVELSBSTRING   = "Ubuntu-14.04"
  TARGET_SYS        = "arm-poky-linux-gnueabi"
  MACHINE           = "qemuarm"
  DISTRO            = "poky"
  DISTRO_VERSION    = "1.8"
  TUNE_FEATURES     = "arm armv5 thumb dsp"
  TARGET_FPU        = "soft"
  meta              
  meta-yocto        
  meta-yocto-bsp    = "&lt;unknown&gt;:&lt;unknown&gt;"
  
  NOTE: Preparing RunQueue
  NOTE: Executing SetScene Tasks
  NOTE: Executing RunQueue Tasks
  NOTE: Tasks Summary: Attempted 2394 tasks of which 2394 didn't need to be rerun and all succeeded.
  ERROR: Unknown event: error
  NOTE: Resolving any missing task queue dependencies
  
  Build Configuration:
  BB_VERSION        = "1.26.0"
  BUILD_SYS         = "x86_64-linux"
  NATIVELSBSTRING   = "Ubuntu-14.04"
  TARGET_SYS        = "arm-poky-linux-gnueabi"
  MACHINE           = "qemuarm"
  DISTRO            = "poky"
  DISTRO_VERSION    = "1.8"
  TUNE_FEATURES     = "arm armv5 thumb dsp"
  TARGET_FPU        = "soft"
  meta              
  meta-yocto        
  meta-yocto-bsp    = "&lt;unknown&gt;:&lt;unknown&gt;"
  
  NOTE: Preparing RunQueue
  NOTE: Executing SetScene Tasks
  NOTE: Executing RunQueue Tasks
  NOTE: Running noexec task 1870 of 2835 (ID: 4, /home/fuxy/Documents/poky-fido-13/build/recipes/images/core-image-full-cmdline-edited-20150730-132403.bb, do_fetch)
  NOTE: Running noexec task 1871 of 2835 (ID: 0, /home/fuxy/Documents/poky-fido-13/build/recipes/images/core-image-full-cmdline-edited-20150730-132403.bb, do_unpack)
  NOTE: Running noexec task 1873 of 2835 (ID: 1, /home/fuxy/Documents/poky-fido-13/build/recipes/images/core-image-full-cmdline-edited-20150730-132403.bb, do_patch)
  NOTE: Running task 2832 of 2835 (ID: 8, /home/fuxy/Documents/poky-fido-13/build/recipes/images/core-image-full-cmdline-edited-20150730-132403.bb, do_populate_lic)
  NOTE: Running task 2833 of 2835 (ID: 7, /home/fuxy/Documents/poky-fido-13/build/recipes/images/core-image-full-cmdline-edited-20150730-132403.bb, do_rootfs)
  NOTE: recipe core-image-full-cmdline-edited-20150730-132403-1.0-r0: task do_populate_lic: Succeeded
  NOTE: recipe core-image-full-cmdline-edited-20150730-132403-1.0-r0: task do_rootfs: Succeeded
  NOTE: Running noexec task 2835 of 2835 (ID: 11, /home/fuxy/Documents/poky-fido-13/build/recipes/images/core-image-full-cmdline-edited-20150730-132403.bb, do_build)
  NOTE: Tasks Summary: Attempted 2835 tasks of which 2829 didn't need to be rerun and all succeeded.
  ERROR: Unknown event: error
  ERROR: Timeout while attempting to communicate with bitbake server
  ERROR: Timeout while attempting to communicate with bitbake server
  ERROR: Timeout while attempting to communicate with bitbake server
  </code></pre>