The build is unreachable.

Build log

> /tmp/stackage-build2455$ stack unpack generic-data-0.3.0.0@sha256:86cac53570f45f5b1e5f54d8765d0a05f1674b3703e4dbb48a919f89c57b3cbc
Unpacked generic-data-0.3.0.0 to /tmp/stackage-build2455/generic-data-0.3.0.0/
> /tmp/stackage-build2455/generic-data-0.3.0.0$ ghc -clear-package-db -global-package-db -package-db=/home/circleci/project/builds/nightly/pkgdb Setup
[1 of 1] Compiling Main             ( Setup.hs, Setup.o )
Linking Setup ...
> /tmp/stackage-build2455/generic-data-0.3.0.0$ ./Setup configure --package-db=clear --package-db=global --package-db=/home/circleci/project/builds/nightly/pkgdb --libdir=/home/circleci/project/builds/nightly/lib --bindir=/home/circleci/project/builds/nightly/bin --datadir=/home/circleci/project/builds/nightly/share --libexecdir=/home/circleci/project/builds/nightly/libexec --sysconfdir=/home/circleci/project/builds/nightly/etc --docdir=/home/circleci/project/builds/nightly/doc/generic-data-0.3.0.0 --htmldir=/home/circleci/project/builds/nightly/doc/generic-data-0.3.0.0 --haddockdir=/home/circleci/project/builds/nightly/doc/generic-data-0.3.0.0
Configuring generic-data-0.3.0.0...
> /tmp/stackage-build2455/generic-data-0.3.0.0$ ghc -clear-package-db -global-package-db -package-db=/home/circleci/project/builds/nightly/pkgdb Setup
> /tmp/stackage-build2455/generic-data-0.3.0.0$ ./Setup build
Preprocessing library for generic-data-0.3.0.0..
Building library for generic-data-0.3.0.0..
[ 1 of 14] Compiling Generic.Data.Internal.Compat ( src/Generic/Data/Internal/Compat.hs, dist/build/Generic/Data/Internal/Compat.o )
[ 2 of 14] Compiling Generic.Data.Internal.Enum ( src/Generic/Data/Internal/Enum.hs, dist/build/Generic/Data/Internal/Enum.o )
[ 3 of 14] Compiling Generic.Data.Internal.Functions ( src/Generic/Data/Internal/Functions.hs, dist/build/Generic/Data/Internal/Functions.o )
[ 4 of 14] Compiling Generic.Data.Internal.Meta ( src/Generic/Data/Internal/Meta.hs, dist/build/Generic/Data/Internal/Meta.o )
[ 5 of 14] Compiling Generic.Data.Internal.Newtype ( src/Generic/Data/Internal/Newtype.hs, dist/build/Generic/Data/Internal/Newtype.o )
[ 6 of 14] Compiling Generic.Data.Internal.Resolvers ( src/Generic/Data/Internal/Resolvers.hs, dist/build/Generic/Data/Internal/Resolvers.o )
[ 7 of 14] Compiling Generic.Data.Internal.Show ( src/Generic/Data/Internal/Show.hs, dist/build/Generic/Data/Internal/Show.o )
[ 8 of 14] Compiling Generic.Data.Internal.Data ( src/Generic/Data/Internal/Data.hs, dist/build/Generic/Data/Internal/Data.o )

src/Generic/Data/Internal/Data.hs:18:1: warning: [-Wunused-imports]
    The import of ‘Data.Semigroup’ is redundant
      except perhaps to import instances from ‘Data.Semigroup’
    To import instances alone, use: import Data.Semigroup()
   |
18 | import Data.Semigroup
   | ^^^^^^^^^^^^^^^^^^^^^
[ 9 of 14] Compiling Generic.Data.Internal.Utils ( src/Generic/Data/Internal/Utils.hs, dist/build/Generic/Data/Internal/Utils.o )
[10 of 14] Compiling Generic.Data.Internal.Prelude ( src/Generic/Data/Internal/Prelude.hs, dist/build/Generic/Data/Internal/Prelude.o )

src/Generic/Data/Internal/Prelude.hs:10:1: warning: [-Wunused-imports]
    The import of ‘Data.Semigroup’ is redundant
      except perhaps to import instances from ‘Data.Semigroup’
    To import instances alone, use: import Data.Semigroup()
   |
10 | import Data.Semigroup
   | ^^^^^^^^^^^^^^^^^^^^^
[11 of 14] Compiling Generic.Data.Internal.Generically ( src/Generic/Data/Internal/Generically.hs, dist/build/Generic/Data/Internal/Generically.o )

src/Generic/Data/Internal/Generically.hs:12:1: warning: [-Wunused-imports]
    The import of ‘Data.Semigroup’ is redundant
      except perhaps to import instances from ‘Data.Semigroup’
    To import instances alone, use: import Data.Semigroup()
   |
12 | import Data.Semigroup
   | ^^^^^^^^^^^^^^^^^^^^^
[12 of 14] Compiling Generic.Data     ( src/Generic/Data.hs, dist/build/Generic/Data.o )
[13 of 14] Compiling Generic.Data.Orphans ( orphans/Generic/Data/Orphans.hs, dist/build/Generic/Data/Orphans.o )

orphans/Generic/Data/Orphans.hs:12:1: warning: [-Wunused-imports]
    The import of ‘Data.Semigroup’ is redundant
      except perhaps to import instances from ‘Data.Semigroup’
    To import instances alone, use: import Data.Semigroup()
   |
12 | import Data.Semigroup
   | ^^^^^^^^^^^^^^^^^^^^^
[14 of 14] Compiling Generic.Data.Types ( src/Generic/Data/Types.hs, dist/build/Generic/Data/Types.o )
> /tmp/stackage-build2455/generic-data-0.3.0.0$ ghc -clear-package-db -global-package-db -package-db=/home/circleci/project/builds/nightly/pkgdb Setup
> /tmp/stackage-build2455/generic-data-0.3.0.0$ ./Setup copy
Installing library in /home/circleci/project/builds/nightly/lib/x86_64-linux-ghc-8.7.20181122/generic-data-0.3.0.0-FmixUjXu3U01xbX47hipP7
> /tmp/stackage-build2455/generic-data-0.3.0.0$ ghc -clear-package-db -global-package-db -package-db=/home/circleci/project/builds/nightly/pkgdb Setup
> /tmp/stackage-build2455/generic-data-0.3.0.0$ ./Setup register
Registering library for generic-data-0.3.0.0..