these 2 derivations will be built:
  /nix/store/bd01d85j9a99a1bpbc7677pyz3ii1i9d-source.drv
  /nix/store/0x3q83m2nwsning6df169b4b5w464rs9-outline-0.67.0.drv
building '/nix/store/l5vw9v1yi3y85wb9mw3i6rwc6fcaln5z-source.drv'
source> 
source> trying https://github.com/outline/outline/archive/v0.67.0.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 2955k    0 2955k    0     0  1346k      0 --:--:--  0:00:02 --:--:-- 2061k
source> unpacking source archive /nix/var/nix/builds/nix-2817620-158131395/v0.67.0.tar.gz
error: hash mismatch in fixed-output derivation '/nix/store/l5vw9v1yi3y85wb9mw3i6rwc6fcaln5z-source.drv':
         specified: sha256-l7EJkmH/ctP8P937bV5gUqmeKeuH2mjby7Mj/USaCcA=
            got:    sha256-gMWHTHtHPPCCi8u/7ARhMlhdQQC6OwRkxvonVRpzQ6s=
error: build of resolved derivation '/nix/store/l5vw9v1yi3y85wb9mw3i6rwc6fcaln5z-source.drv' failed
error: Cannot build '/nix/store/0x3q83m2nwsning6df169b4b5w464rs9-outline-0.67.0.drv'.
       Reason: 1 dependency failed.
       Output paths:
         /nix/store/bdkw05jv5r5yjx6rxac64qgij118ydl7-outline-0.67.0