First build: https://ci.chromium.org/p/chrome/builders/luci.chrome.ci/mac-builder-perf/1

Error is: 

[I 2018-08-24 08:50:49] About to install Xcode 8e2002 in /b/s/w/ir/cache/builder/src/build/mac_files/Xcode.app for mac
Error: resolving package: failed to resolve package version (line 1): prefix "infra_internal/ios/xcode/mac" doesn't exist or the caller is not allowed to see it.
Error: resolving package: failed to resolve package version (line 1): prefix "infra_internal/ios/xcode/mac" doesn't exist or the caller is not allowed to see it.
[E 2018-08-24 08:50:49] original error: exit status 1
[E 2018-08-24 08:50:49] 
[E 2018-08-24 08:50:49] goroutine 1:
[E 2018-08-24 08:50:49] #0 mac_toolchain/install.go:40 - main.installPackages()
[E 2018-08-24 08:50:49]   reason: failed to install CIPD packages: infra_internal/ios/xcode/mac 8e2002
[E 2018-08-24 08:50:49] 
[E 2018-08-24 08:50:49] 
[E 2018-08-24 08:50:49] #1 mac_toolchain/install.go:226 - main.installXcode()
[E 2018-08-24 08:50:49] #2 mac_toolchain/main.go:115 - main.(*installRun).Run()
[E 2018-08-24 08:50:49] #3 github.com/maruel/subcommands/subcommands.go:360 - subcommands.Run()
[E 2018-08-24 08:50:49] #4 mac_toolchain/main.go:239 - main.main()
[E 2018-08-24 08:50:49] #5 runtime/proc.go:198 - runtime.main()
[E 2018-08-24 08:50:49] #6 runtime/asm_amd64.s:2361 - runtime.goexit()
Xcode build version 8E2002 failed to install: Command '['/b/s/w/ir/kitchen-workdir/mac_toolchain', 'install', '-kind', 'mac', '-xcode-version', '8e2002', '-output-dir', '/b/s/w/ir/cache/builder/src/build/mac_files/Xcode.app']' returned non-zero exit status 1
Access to Xcode CIPD package requires authentication.
-----------------------------------------------------------------
You appear to be a Googler.
I'm sorry for the hassle, but you may need to do a one-time manual
authentication. Please run:
    cipd auth-login
and follow the instructions.
NOTE: Use your google.com credentials, not chromium.org.
-----------------------------------------------------------------
Error: Command '/b/s/w/ir/cache/vpython/cbb391/bin/python src/build/mac_toolchain.py' returned non-zero exit status 1 in /b/s/w/ir/cache/builder
step returned non-zero exit code: 2