Segmentation fault: 11 caused by Pkg.update()

Hi folks! I just installed Julia 1.4 on my Mac OSX 10.13. It seems to work fine, but then when I type Pkg.update() I get:

   _       _ _(_)_     |  Documentation: https://docs.julialang.org
  (_)     | (_) (_)    |
   _ _   _| |_  __ _   |  Type "?" for help, "]?" for Pkg help.
  | | | | | | |/ _` |  |
  | | |_| | | | (_| |  |  Version 1.4.2 (2020-05-23)
 _/ |\__'_|_|_|\__'_|  |  Official https://julialang.org/ release
|__/                   |

julia> 

julia> Pkg.update()
    Cloning default registries into `~/.julia`
######################################################################## 100.0%
      Added registry `General` to `~/.julia/registries/General`
   Updating registry at `~/.julia/registries/General`

signal (11): Segmentation fault: 11
in expression starting at REPL[1]:1
unknown function (ip: 0x0)
Allocations: 77770631 (Pool: 77756128; Big: 14503); GC: 49
Segmentation fault: 11

I get the same if I use “JULIA_PKG_SERVER=pkg.julialang.org julia” from the Terminal as well (I see this mentioned some places online, something about libgit2?

Any help would be VERY appreciated!!
Cheers,
Nick

Update: It seems like the issue may have been the Fezzik precompiling of packages. When I added:

blacklist(“Interval”)
blacklist(“AbstractPlots”)

…to the blacklist (based on a random hint in Fezzik issues), Fezzik complained a lot, but then julia loaded everything fine and seems not to crash on update.