these 4 derivations will be built:
  /nix/store/236qrl0c18kz3sxd5firmmwsmlpacx8m-agent-browser-0.39.2-vendor.drv
  /nix/store/cxyb7iannz0f8vs2s9gzx0iwbk75d064-agent-browser-dashboard-0.39.2.drv
  /nix/store/bbdr8zb5x6i0c9rdg4yl0w5lw4mrlsv3-agent-browser-0.39.2.drv
  /nix/store/2fpqs6bcyhy6a0xphvymvd5qcm8my5qd-check-agent-browser.drv
warning: SQLite database '/nix/var/nix/db/db.sqlite' is busy
could not copy /nix/store/i2fzgmvr0a1xj25qxbd7inxrsskvczan-agent-browser-0.39.2: error: gRPC FetchNars failed: failed to connect to all addresses; last error: UNKNOWN: ipv6:%5B2a01:4f9:3071:1fc8::1%5D:50051: handshaker shutdown
error: some outputs are unexpectedly invalid