{
  "as": "ml64.exe", 
  "buildid": "20180115093319", 
  "cc": "z:/build/build/src/vs2017_15.4.2/VC/bin/Hostx64/x64/cl.exe", 
  "cxx": "z:/build/build/src/vs2017_15.4.2/VC/bin/Hostx64/x64/cl.exe", 
  "host_alias": "x86_64-pc-mingw32", 
  "host_cpu": "x86_64", 
  "host_os": "mingw32", 
  "host_vendor": "pc", 
  "moz_app_id": "{ec8030f7-c20a-464f-9b0e-13a3a9e97384}", 
  "moz_app_maxversion": "58.*", 
  "moz_app_name": "firefox", 
  "moz_app_vendor": "Mozilla", 
  "moz_app_version": "58.0", 
  "moz_pkg_platform": "win64", 
  "moz_source_repo": "MOZ_SOURCE_REPO=https://hg.mozilla.org/releases/mozilla-release", 
  "moz_source_stamp": "4c230b89e05e6a4d87d3f26e2ca862dd59e617d0", 
  "moz_update_channel": "release", 
  "target_alias": "x86_64-pc-mingw32", 
  "target_cpu": "x86_64", 
  "target_os": "mingw32", 
  "target_vendor": "pc"
}