these 2 derivations will be built:
  /nix/store/dp1r0fwzz92gby28n9gzym457jpd4996-notmuch-0.40.drv
  /nix/store/1nmmrbyp3r0xakgqc61ssw4m2wlrl2db-email-sync.drv
error: Cannot build '/nix/store/dp1r0fwzz92gby28n9gzym457jpd4996-notmuch-0.40.drv'.
       Reason: builder failed with exit code 2.
       Output paths:
         /nix/store/3qhr2m15ilsjlpbx1c3xvjfr27rx15s7-notmuch-0.40-vim
         /nix/store/afgmsqzqq7vx7c8xhn2p8fl8r6ysdkc6-notmuch-0.40
         /nix/store/f9j576cv3fhynsxfv7djsr7qi2014r0k-notmuch-0.40-bindingconfig
         /nix/store/sdwm8spfjz9dica1gzrj3ahdzia94rr9-notmuch-0.40-man
         /nix/store/xjxm7baic6i4rqy9diirjpn090f90w6c-notmuch-0.40-info
       Last 25 log lines:
       > T850-git: Testing "notmuch git" to save and restore tags
       >  PASS   init
       >  PASS   init (git.path)
       >  PASS   clone
       >  PASS   initial commit needs force
       >  PASS   committing new prefix requires force
       >  PASS   committing new prefix works with force
       >  PASS   checkout new prefix requires force
       >  PASS   checkout new prefix works with force
       >  PASS   commit
       >  PASS   commit --force succeeds
       >  PASS   changing git.safe_fraction succeeds
       >  PASS   commit, with quoted tag
       > FATAL: /build/notmuch-0.40/test/T850-git.sh: interrupted by signal 15
       >
       > '/build/notmuch-0.40/test/test-results/T590-libconfig' does not exist!
       > '/build/notmuch-0.40/test/test-results/T850-git' does not exist!
       > Notmuch test suite complete.
       > 1483/1499 tests passed.
       > 10 broken tests failed as expected.
       > 6 tests skipped.
       > All tests in 23 files skipped.
       > 2 tests failed to report results.
       > ERROR: some tests failed; first failed returned error code 124
       > make: *** [test/Makefile.local:75: test] Error 1
       For full logs, run:
         nix log /nix/store/dp1r0fwzz92gby28n9gzym457jpd4996-notmuch-0.40.drv
error: Cannot build '/nix/store/1nmmrbyp3r0xakgqc61ssw4m2wlrl2db-email-sync.drv'.
       Reason: 1 dependency failed.
       Output paths:
         /nix/store/qq2l1r19xsl2d53s7hcy528kfpsq9h7h-email-sync