Program received signal SIGFPE: Floating-point exception - erroneous arithmetic operation.

Backtrace for this error:
#0  0x7ffff694e7a2 in ???
#1  0x7ffff694d935 in ???
#2  0x7ffff584e5af in ???
#3  0x4078c2 in __run_star_extras_MOD_calc_peclet_number
	at ../src/run_star_extras.f90:436
#4  0x407b2c in __run_star_extras_MOD_other_adjust_mlt_gradt_fraction_peclet
	at ../src/run_star_extras.f90:416
#5  0x5021f0 in __hydro_vars_MOD_set_hydro_vars
	at ../private/hydro_vars.f90:554
#6  0x504172 in __hydro_vars_MOD_update_vars
	at ../private/hydro_vars.f90:241
#7  0x5044fe in set_some_vars
	at ../private/hydro_vars.f90:194
#8  0x504868 in __hydro_vars_MOD_set_vars
	at ../private/hydro_vars.f90:86
#9  0x5c75bb in prepare_for_new_step
	at ../private/evolve.f90:1896
#10  0x5c75bb in do_step_part1
	at ../private/evolve.f90:380
#11  0x5c75bb in __evolve_MOD_do_evolve_step_part1
	at ../private/evolve.f90:73
#12  0x41416f in __star_lib_MOD_star_evolve_step_part1
	at ../public/star_lib.f90:585
#13  0x41416f in __star_lib_MOD_star_evolve_step
	at ../public/star_lib.f90:567
#14  0x42be31 in __run_star_support_MOD_do_evolve_one_step
	at ../job/run_star_support.f90:216
#15  0x42c725 in __run_star_support_MOD_run1_star
	at ../job/run_star_support.f90:119
#16  0x40c740 in __run_star_MOD_do_run_star
	at /mnt/home/pmocz/ceph/mesa-git-tests/tmp.2TphHWPaVd/star/job/run_star.f90:26
#17  0x40c7d0 in run
	at ../src/run.f90:13
#18  0x40c83f in main
	at ../src/run.f90:2
./rn1: line 6: 537401 Floating point exception./star