Could it be caused by an update for some upstream package? When comparing the last successful CI run with commit message write new file ... with a newer CI run (2022-08-19) with commit message bump version with cp fix ... (2022-08-10), then the following packages have changed:
| Package | Old version | New version |
|---|---|---|
| ChainRules | v1.43.2 | v.1.44.2 |
| PreallocationTools | v0.4.0 | v0.4.2 |
| RecursiveArrayTools | v2.31.2 | v2.32.0 |
| StaticArrays | v1.5.2 | v1.5.5 |
| StaticArraysCore | v1.0.1 | v1.1.0 |
| StructArrays | v0.6.11 | v0.6.12 |
| StructTypes | v1.8.1 | v1.9.0 |
| TimerOutputs | v0.5.20 | v0.5.21 |
| Zygote | v0.6.42 | v0.6.44 |
| ReverseDiff | v1.14.1 | |
| FunctionWrappers | v1.1.2 |
ReverseDiff was introduced by PreallocationTools and FunctionWrappers was introduced by ReverseDiff.
I’ve skimmed the new packages and the changes in the other packages a bit but didn’t see anything in particular that might cause your jobs to hang. What I would do next to figure out the problem is to pin versions in your Project.toml such as PreallocationTools = "=0.4.0" to figure out which package exactly introduces the problem.