Failure building in Windows Container due to missing file

Hi!

ue4-docker version:         0.0.72 (latest available version is 0.0.72)
Operating system:           Windows 10 Pro Version 1903 (OS Build 18362.1139)
Docker daemon version:      19.03.13
NVIDIA Docker supported:    No
Maximum image size:         200GB
Available disk space:       168.46 GiB
Total system memory:        31.95 GiB physical, 41.26 GiB virtual
Number of processors:       6 physical, 12 logical

Hi I’m attempting to run the command

ue4-docker build custom:MYTAG -repo=MYREPO -branch=release

However I get a failure building with the message. I believe this is the relevant snippet of my log:

Saving local manifest to C:\UnrealEngine\Engine\Saved\BuildGraph\Build Tools Win64\Manifest.xml ERROR: Attempt to add file to temp storage manifest that does not exist (C:\UnrealEngine\cpp.hint) (see C:\UnrealEngine\Engine\Programs\AutomationTool\Saved\Logs\Log.txt for full exception trace) AutomationTool exiting with ExitCode=1 (Error_Unknown) BUILD FAILED The command ‘cmd /S /C .\Engine\Build\BatchFiles\RunUAT.bat BuildGraph -target=“Make Installed Build Win64” -script=Engine/Build/InstalledEngineBuild.xml -set:HostPlatformOnly=true -set:WithDDC=%BUILD_DDC% && del /s /q C:\UnrealEngine\LocalBuilds\InstalledDDC 2>NUL && python C:\exclude-components.py C:\UnrealEngine\LocalBuilds\Engine\Windows %EXCLUDE_DEBUG% %EXCLUDE_TEMPLATES% && echo. && echo.RUN directive complete. Docker will now commit the filesystem layer to disk. && echo.Note that for large filesystem layers this can take quite some time. && echo.Performing filesystem layer commit… && echo.’ returned a non-zero code: 1 [ue4-docker build] Error: failed to build image “adamrehn/ue4-minimal:martov-1903”

As you can see it appears to be attempting to add a file that does not appear to exist. I am not sure if this is because of my windows setup.

Do you have any idea why this is happening?

Also I am not sure how to get the full log short of piping into a file but I attached the ending section that wasn’t cropped out by the terminal. Please let me know if you can, where to retroactively find the log.

ue4-dockerlog.txt

[tynril]

FWIW, the error with the missing cpp.hint file was a bug in the 4.25.4 release, which was fixed on Epic’s Perforce release branch, but not on GitHub (the 4.25.4-release tag doesn’t include the fix).

This is the commit that addressed the bug in the initial 4.25.4 release: https://github.com/EpicGames/UnrealEngine/commit/84e4ea3241c294c04fdf7d8fb63f99a3109c8edd

This is a bug with UE’s build scripts themselves, rather than with the environment. Presumably, applying that patch to Engine/Build/Commit.gitdeps.xml would fix ue4-docker’s ability to build 4.25.4. Similarly, if you’re using a custom engine repo, you can backport that patch to 4.25.4 to get around the problem.

[adamrehn]

I’m used to .0 releases of new Unreal Engine versions having bugs in them that subsequently get fixed, but this is definitely the first time I’ve seen the final point release of a version introduce a bug that is then left unfixed until the next .0 release. Since I always advise people to use the newest point release of any given Engine version, I’ve added a patch in commit 99ca1b0 that injects the fix from https://github.com/EpicGames/UnrealEngine/commit/84e4ea3241c294c04fdf7d8fb63f99a3109c8edd when it detects version 4.25.4 and the fix isn’t already present (so it won’t interfere with people’s own forks that already include the backport.)

I’ll tag a new release of ue4-docker that includes the new change once I’ve tested that it fixes the build issues under both Windows and Linux.