bootstrap_cmds failure

jh30yfs48khjm4vm5x3y69s5b5la4sa9-bootstrap_cmds-dev-tools-7.0.drv

downloading 'https://cache.nixos.org/jh30yfs48khjm4vm5x3y69s5b5la4sa9.narinfo'
downloading 'https://urbit-linux.cachix.org/nar/540b39d1e047ec7b847901752e79cdaa1bb4a6f2053c18608bda3c6a831bb8d4.nar.xz'
querying info about '/nix/store/wvj7g45j497n1z7xldi9k8mn7gd5y855-bootstrap_cmds-dev-tools-7.0' on 'https://cache.nixos.org'
downloading 'https://cache.nixos.org/wvj7g45j497n1z7xldi9k8mn7gd5y855.narinfo'
querying info about '/nix/store/wvj7g45j497n1z7xldi9k8mn7gd5y855-bootstrap_cmds-dev-tools-7.0' on 'https://urbit-linux.cachix.org'
downloading 'https://urbit-linux.cachix.org/wvj7g45j497n1z7xldi9k8mn7gd5y855.narinfo'
building '/nix/store/jh30yfs48khjm4vm5x3y69s5b5la4sa9-bootstrap_cmds-dev-tools-7.0.drv'
unpacking sources
unpacking source archive /nix/store/lzizcvlfhc44iqlsb5qhfprxms5rqd3m-bootstrap_cmds-93.tar.gz
source root is bootstrap_cmds-93
setting SOURCE_DATE_EPOCH to timestamp 1418866789 of file bootstrap_cmds-93/migcom.tproj/utils.c
patching sources
configuring
no configure script, doing nothing
building
error.c:60:19: error: expected ';' before 'int'
   60 | __private_extern__
      |                   ^
      |                   ;
   61 | int mig_errors = 0;
      | ~~~
error.c:77:19: error: expected ';' before 'void'
   77 | __private_extern__
      |                   ^
      |                   ;
......
   80 | void
      | ~~~~
builder for '/nix/store/jh30yfs48khjm4vm5x3y69s5b5la4sa9-bootstrap_cmds-dev-tools-7.0.drv' failed with exit code 1