snapcraft terminates override-build script prematurely without error

[Nicolas Bock]

After upgrading my snap from core18 to core20 [1] the override-build step is not completed anymore. However, there is no error message and snapcraft continues with staging and then proceeds to the next part [2]. The build script [3] executes the make command but terminates the script before the make install command.

[1] https://github.com/nicolasbock/rabbitmq-server-snap/pull/52
[2] https://github.com/nicolasbock/rabbitmq-server-snap/runs/7982842565?check_suite_focus=true#step:3:5863
[3] https://github.com/nicolasbock/rabbitmq-server-snap/pull/52/files#diff-56759910381a014fecfd7556dd72ddd68c747d922a5b7df2044b9ce7c552f5f5R164 1

[Nicolas Bock (nicolasbock)]

There is a forums discussion related to this issue at

https://forum.snapcraft.io/t/snapcraft-not-completing-override-build-script/31435

[John Neffenger (jgneff)]

I'm having the same problem when migrating from core18 to either core20 or core22, whether using snapcraft version 7.5.5 or the latest version 8.0.5. The override-build scriptlet just quits after the build step and never executes the commands that follow, which copy the build output to the install directory.

The 'bash gradlew' build command linked below is executed and finishes without error:

https://github.com/jgneff/openjfx/blob/076ad6de73def01cbc201385082e32c9e114bf3a/snap/snapcraft.yaml#L160

On core18, the rest of the override-build scriptlet is executed, but on core20 and core22, the commands below the build command are never executed:

https://github.com/jgneff/openjfx/blob/076ad6de73def01cbc201385082e32c9e114bf3a/snap/snapcraft.yaml#L167

I'm not sure how to get any more information from snapcraft about what it's doing. Meanwhile, I'll keep experimenting.