these 2 derivations will be built:
  /nix/store/8j8k0mfnkkw1c7yaas6qxpnq311159rf-source.drv
  /nix/store/hfwfq4dkfalic69vxx377dlz4473p0vm-nix-shell.drv
building '/nix/store/p4w9gmnr31x34ka216c9ygbj1bjizzrj-source.drv' on 'ssh-ng://customer@mac02'
building '/nix/store/p4w9gmnr31x34ka216c9ygbj1bjizzrj-source.drv'
source> 
source> trying https://github.com/zerotier/ZeroTierOne/archive/master.tar.gz
source>   % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
source>                                  Dload  Upload   Total   Spent    Left  Speed
source>   0     0   0     0   0     0     0     0  --:--:-- --:--:-- --:--:--     0
source> 100 10634k 100 10634k   0     0 19726k     0  --:--:-- --:--:-- --:--:-- 19726k
source> unpacking source archive /nix/var/nix/builds/nix-3423-2193460713/download.tar.gz
error: build of '/nix/store/p4w9gmnr31x34ka216c9ygbj1bjizzrj-source.drv' on 'ssh-ng://customer@mac02' failed: hash mismatch in fixed-output derivation '/nix/store/p4w9gmnr31x34ka216c9ygbj1bjizzrj-source.drv':
         specified: sha256-fcGVoV0Vd8TrYDE730W9GBHcVjTXB3oGqWzJRErBBzk=
            got:    sha256-uWORGGTafVZaTQV6a9ryETtYba0XKRpgti/WPJpIM6Q=
error: Cannot build '/nix/store/p4w9gmnr31x34ka216c9ygbj1bjizzrj-source.drv'.
       Reason: builder failed with exit code 1.
       Output paths:
         /nix/store/zkja64w4chzqiqg92ziq0ly7idhcjch7-source
error: build of resolved derivation '/nix/store/p4w9gmnr31x34ka216c9ygbj1bjizzrj-source.drv' failed
error: Cannot build '/nix/store/hfwfq4dkfalic69vxx377dlz4473p0vm-nix-shell.drv'.
       Reason: 1 dependency failed.
       Output paths:
         /nix/store/h7931cz6a7dzzv0if4bd2dr5ifl90n9w-nix-shell