cp: cannot create regular file '…libzlib.a': File exists

[mykmelez]

Despite an earlier attempt to resolve this problem, TaskCluster builds continue to fail with the error cp: cannot create regular file '/repo/obj-x86_64-pc-linux-gnu/positron/app/spidernode/.libs/libzlib.a': File exists:

90:42.21   CXX(target) /repo/positron/spidernode/out/Debug/obj.target/node/src/backtrace_posix.o
90:44.98   AR(target) /repo/positron/spidernode/out/Debug/obj.target/libnode.a
90:45.12 cp: cannot create regular file '/repo/obj-x86_64-pc-linux-gnu/positron/app/spidernode/.libs/libzlib.a': File exists
90:45.12 make[5]: *** [../../positron/app/spidernode/.libs/libhttp_parser.a] Error 1
90:45.12 make[5]: *** Deleting file `../../positron/app/spidernode/.libs/libhttp_parser.a'
90:45.12 make[5]: *** Waiting for unfinished jobs....
90:45.14 make[4]: *** [positron/webidl/target] Error 2
90:45.14 make[3]: *** [compile] Error 2
90:45.16 make[2]: *** [default] Error 2
90:45.16 make[1]: *** [realbuild] Error 2
90:45.16 make: *** [build] Error 2
90:45.17 267 compiler warnings present.
90:45.62 Notification center failed: Unable to autolaunch a dbus-daemon without a $DISPLAY for X11
[taskcluster 2016-10-12 02:22:19.799Z] === Task Finished ===
[taskcluster 2016-10-12 02:22:19.800Z] Unsuccessful task run with exit code: 2 completed in 6896.965 seconds