Drifting unsorted cell crash

Hi all,

Running the EAGLE_12 IC's with Gadget2 SPH and the full EAGLE model seems to break something. Code built with the following:

 Welcome to the cosmological hydrodynamical code
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 SPH With Inter-dependent Fine-grained Tasking

 Version : 0.8.0
 Revision: v0.7.0-3123-gb73901b5-dirty, Branch: master, Date: 2019-02-20 10:39:24 +0000
 Webpage : www.swiftsim.com

 Config. options: '--enable-ipo CFLAGS=-qopt-zmm-usage=high --with-subgrid=EAGLE --disable-hand-vec'

 Compiler: ICC, Version: 19.0.20181018
 CFLAGS  : '-idirafter /usr/include/linux -O3 -ansi-alias -xCORE-AVX512 -pthread -w2 -Wunused-variable -Wshadow -Werror -Wstrict-prototypes'

 HDF5 library version: 1.10.3
 FFTW library version: 3.x (details not available)
 GSL  library version: 2.4

Invoked with

../../swift --cosmology --hydro --self-gravity --stars --threads=28 --pin --cooling --star-formation eagle_12.yml 2>&1 | tee output.log

Parameter file was as it is in the master. Crashes like:

    1038   3.021139e-04    0.0661623   14.1143463   6.707147e-08   41   43          386          386            0                10.612      0
    1039   3.021810e-04    0.0661721   14.1121085   6.710808e-08   41   41           11           11            0                 7.178      0
    1040   3.022481e-04    0.0661819   14.1098709   6.710808e-08   41   42          159          159            0                 8.575      0
    1041   3.023152e-04    0.0661917   14.1076338   6.710808e-08   41   41           11           11            0                 7.244      0
    1042   3.023824e-04    0.0662015   14.1053969   6.715558e-08   41   46       310009       323422            0              1573.701      0
    1043   3.024495e-04    0.0662113   14.1031604   6.715691e-08   41   41           10           10            0              2140.332      1
[01669.3] ../../../src/runner.c:runner_do_stars_sort():1019: Sorting un-drifted cell c->nodeID=0

I've set up the run with frequent restarts, let's see if it reproduces. The files are in /cosma7/data/dp004/dc-borr1/eagle_12_tests/joshrun/swiftsim/build/gadget-eagle/examples/EAGLE_ICs/EAGLE_12/ for local people.