this derivation will be built:
  /nix/store/bcaddarmg3ljrlc22fzy514s38g2yzhd-niks3-tests-1.15.0.drv
building '/nix/store/bcaddarmg3ljrlc22fzy514s38g2yzhd-niks3-tests-1.15.0.drv'
niks3-tests-1.15.0> tribuchet: building on jamie
niks3-tests-1.15.0> Running phase: unpackPhase
niks3-tests-1.15.0> unpacking source archive /nix/store/i57bynflq8l82kxlw37qfv5xn5scq2f7-source
niks3-tests-1.15.0> source root is source
niks3-tests-1.15.0> Running phase: patchPhase
niks3-tests-1.15.0> Running phase: updateAutotoolsGnuConfigScriptsPhase
niks3-tests-1.15.0> Running phase: configurePhase
niks3-tests-1.15.0> Running phase: buildPhase
niks3-tests-1.15.0> client/client.go:265:18: func (*Client).putBytes is unused (unused)
niks3-tests-1.15.0> func (c *Client) putBytes(ctx context.Context, url string, data []byte) (*http.Response, error) {
niks3-tests-1.15.0>                  ^
niks3-tests-1.15.0> 1 issues:
niks3-tests-1.15.0> * unused: 1
error: Cannot build '/nix/store/bcaddarmg3ljrlc22fzy514s38g2yzhd-niks3-tests-1.15.0.drv'.
       Reason: builder failed with exit code 1.
       Output paths:
         /nix/store/lahlwzfkq6ndkhl3jc1ydyy94gjqzwr8-niks3-tests-1.15.0
       Last 13 log lines:
       > tribuchet: building on jamie
       > Running phase: unpackPhase
       > unpacking source archive /nix/store/i57bynflq8l82kxlw37qfv5xn5scq2f7-source
       > source root is source
       > Running phase: patchPhase
       > Running phase: updateAutotoolsGnuConfigScriptsPhase
       > Running phase: configurePhase
       > Running phase: buildPhase
       > client/client.go:265:18: func (*Client).putBytes is unused (unused)
       > func (c *Client) putBytes(ctx context.Context, url string, data []byte) (*http.Response, error) {
       >                  ^
       > 1 issues:
       > * unused: 1
       For full logs, run:
         nix log /nix/store/bcaddarmg3ljrlc22fzy514s38g2yzhd-niks3-tests-1.15.0.drv