these 4 derivations will be built:
  /nix/store/7674w6g9lcixj956i3mnszivrp5lhgl0-Cargo.toml.drv
  /nix/store/fgjagf77q4ack8qyb1q3133gwld4jl6l-source.drv
  /nix/store/4d6z5y9qv9rkjl31kxfvzyw9jcffzcjz-harmonia-deps-3.1.0.drv
  /nix/store/jl8r30mwxxm49br8c387jfadx5y157cj-harmonia-3.1.0.drv
error: build of '/nix/store/jl8r30mwxxm49br8c387jfadx5y157cj-harmonia-3.1.0.drv' on 'ssh-ng://customer@mac02' failed: Cannot build '/nix/store/jl8r30mwxxm49br8c387jfadx5y157cj-harmonia-3.1.0.drv'.
       Reason: builder failed with exit code 101.
       Output paths:
         /nix/store/9kphw68ds6iarbdcbkh2lj81yni92fqw-harmonia-3.1.0
       Last 25 log lines:
       >     |
       > help: a struct with a similar name exists
       >     |
       > 343 -             let (hashing_reader, hash_state) = harmonia_utils_hash::HashingReader::new(source);
       > 343 +             let (hashing_reader, hash_state) = harmonia_utils_hash::HashReader::new(source);
       >     |
       >
       > warning: unused import: `std::ffi::CString`
       >   --> harmonia-daemon/src/build_users/simple_user_lock.rs:10:5
       >    |
       > 10 | use std::ffi::CString;
       >    |     ^^^^^^^^^^^^^^^^^
       >    |
       >    = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
       >
       > warning: unused import: `User`
       >   --> harmonia-daemon/src/build_users/simple_user_lock.rs:18:29
       >    |
       > 18 | use nix::unistd::{Gid, Uid, User, geteuid, getuid};
       >    |                             ^^^^
       >
       > For more information about this error, try `rustc --explain E0433`.
       > warning: `harmonia-daemon` (lib) generated 2 warnings
       > error: could not compile `harmonia-daemon` (lib) due to 1 previous error; 2 warnings emitted
       > warning: build failed, waiting for other jobs to finish...
       For full logs, run:
         nix log /nix/store/jl8r30mwxxm49br8c387jfadx5y157cj-harmonia-3.1.0.drv
error: Cannot build '/nix/store/jl8r30mwxxm49br8c387jfadx5y157cj-harmonia-3.1.0.drv'.
       Reason: builder failed with exit code 1.
       Output paths:
         /nix/store/9kphw68ds6iarbdcbkh2lj81yni92fqw-harmonia-3.1.0