Link to builder :
https://uberchromegw.corp.google.com/i/official.desktop.continuous/builders/mac64%20trunk/builds/2935


Link to Error log :
https://uberchromegw.corp.google.com/i/official.desktop.continuous/builders/mac64%20trunk/builds/2935/steps/compile/logs/stdio

Error :
ninja: Entering directory `/b/c/b/mac64_trunk/src/out/Release'
ninja: error: '../../native_client/toolchain/mac_x86/pnacl_newlib/bin/x86_64-nacl-objcopy', needed by 'irt_x64/obj/ppapi/native_client/nacl_irt_debuglink.inputdeps.stamp', missing and no known rule to make it
step returned non-zero exit code: 1
@@@STEP_FAILURE@@@