JET + Mooncake fixes for 1.12

[penelopeysm]

• Mooncake doesn't precompile on 1.12, which was causing CI to fail on julia-version = pre. This removes it from the test suite if the Julia version is 1.12.

Previously, we knew that CI was failing on 1.12 because of Mooncake. However, removing Mooncake also flagged up a couple more errors that I had to resolve to get CI to pass:

• JET.jl has a new version, v0.10, that is intended for Julia 1.12. This PR also includes v0.10 in the allowed compat ranges for JET.jl so that the tests can run on pre. Previously, the JET tests on pre would fail as CI would attempt to install an older version of JET that wasn't forward-compatible. Thankfully, this doesn't require runtime checks because Pkg will automatically figure out the appropriate version of JET to install.

• Finally, this PR disables doctests on 1.12, because error messages vary from version to version and it can be very flaky to test correctly for them.

There is still one remaining test failure on 1.12, which is related to the use of Threads.threadid() in ThreadSafeVarInfo. I wrote up more about this problem in #924.

Supersedes: #872 #873 #875

[github-actions]

Benchmark Report for Commit d6e9c83

Computer Information

Julia Version 1.11.5
Commit 760b2e5b739 (2025-04-14 06:53 UTC)
Build Info:
  Official https://julialang.org/ release
Platform Info:
  OS: Linux (x86_64-linux-gnu)
  CPU: 4 × AMD EPYC 7763 64-Core Processor
  WORD_SIZE: 64
  LLVM: libLLVM-16.0.6 (ORCJIT, znver3)
Threads: 1 default, 0 interactive, 1 GC (on 4 virtual cores)

Benchmark Results

|                 Model | Dimension |  AD Backend |      VarInfo Type | Linked | Eval Time / Ref Time | AD Time / Eval Time |
|-----------------------|-----------|-------------|-------------------|--------|----------------------|---------------------|
| Simple assume observe |         1 | forwarddiff |             typed |  false |                 10.1 |                 1.5 |
|           Smorgasbord |       201 | forwarddiff |             typed |  false |                765.8 |                33.4 |
|           Smorgasbord |       201 | forwarddiff | simple_namedtuple |   true |                420.7 |                46.2 |
|           Smorgasbord |       201 | forwarddiff |           untyped |   true |               1243.4 |                26.8 |
|           Smorgasbord |       201 | forwarddiff |       simple_dict |   true |               3410.7 |                23.0 |
|           Smorgasbord |       201 | reversediff |             typed |   true |               1474.0 |                30.0 |
|           Smorgasbord |       201 |    mooncake |             typed |   true |                971.0 |                 5.3 |
|    Loop univariate 1k |      1000 |    mooncake |             typed |   true |               5687.3 |                 3.9 |
|       Multivariate 1k |      1000 |    mooncake |             typed |   true |               1028.6 |                 8.8 |
|   Loop univariate 10k |     10000 |    mooncake |             typed |   true |              64489.3 |                 3.6 |
|      Multivariate 10k |     10000 |    mooncake |             typed |   true |               9393.7 |                 9.5 |
|               Dynamic |        10 |    mooncake |             typed |   true |                133.7 |                14.6 |
|              Submodel |         1 |    mooncake |             typed |   true |                 13.8 |                 6.6 |
|                   LDA |        12 | reversediff |             typed |   true |                480.4 |                 5.6 |

[github-actions]

DynamicPPL.jl documentation for PR #921 is available at:
https://TuringLang.github.io/DynamicPPL.jl/previews/PR921/

[codecov]

Codecov Report

Attention: Patch coverage is 50.00000% with 1 line in your changes missing coverage. Please review.

Project coverage is 11.05%. Comparing base (cdeb657) to head (c25fd4c).

Files with missing lines	Patch %	Lines
src/threadsafe.jl	50.00%	1 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff             @@
##             main     #921       +/-   ##
===========================================
- Coverage   85.01%   11.05%   -73.97%     
===========================================
  Files          35       35               
  Lines        3924     3891       -33     
===========================================
- Hits         3336      430     -2906     
- Misses        588     3461     +2873     

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[coveralls]

Pull Request Test Coverage Report for Build 15077915515

Details

• 0 of 0 changed or added relevant lines in 0 files are covered.
• 22 unchanged lines in 11 files lost coverage.
• Overall coverage remained the same at 85.102%

---

Files with Coverage Reduction	New Missed Lines	%
ext/DynamicPPLEnzymeCoreExt.jl	1	0.0%
ext/DynamicPPLForwardDiffExt.jl	1	63.64%
src/sampler.jl	1	89.23%
src/simple_varinfo.jl	1	75.14%
src/varnamedvector.jl	1	89.36%
src/contexts.jl	2	74.79%
src/logdensityfunction.jl	2	52.27%
src/model.jl	2	84.17%
src/utils.jl	2	73.8%
src/values_as_in_model.jl	3	59.52%

Totals
Change from base Build 14935073817:	0.0%
Covered Lines:	3336
Relevant Lines:	3920

---

💛 - Coveralls