The build is unreachable.

Build log

> /tmp/stackage-build2455$ stack unpack x509-store-1.6.6@sha256:5503bf2d77f5d7349e92b3961cbfab9cdbb48a310a4ac74b22069c3b6c18f4d8
Unpacked x509-store-1.6.6 to /tmp/stackage-build2455/x509-store-1.6.6/
> /tmp/stackage-build2455/x509-store-1.6.6$ 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/x509-store-1.6.6$ ./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/x509-store-1.6.6 --htmldir=/home/circleci/project/builds/nightly/doc/x509-store-1.6.6 --haddockdir=/home/circleci/project/builds/nightly/doc/x509-store-1.6.6
Configuring x509-store-1.6.6...
> /tmp/stackage-build2455/x509-store-1.6.6$ ghc -clear-package-db -global-package-db -package-db=/home/circleci/project/builds/nightly/pkgdb Setup
> /tmp/stackage-build2455/x509-store-1.6.6$ ./Setup build
Preprocessing library for x509-store-1.6.6..
Building library for x509-store-1.6.6..
[1 of 3] Compiling Data.X509.CertificateStore ( Data/X509/CertificateStore.hs, dist/build/Data/X509/CertificateStore.o )

Data/X509/CertificateStore.hs:15:1: 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()
   |
15 | import           Data.Semigroup
   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[2 of 3] Compiling Data.X509.Memory ( Data/X509/Memory.hs, dist/build/Data/X509/Memory.o )
[3 of 3] Compiling Data.X509.File   ( Data/X509/File.hs, dist/build/Data/X509/File.o )

Data/X509/File.hs:6:1: warning: [-Wunused-imports]
    The import of ‘Control.Applicative’ is redundant
      except perhaps to import instances from ‘Control.Applicative’
    To import instances alone, use: import Control.Applicative()
  |
6 | import Control.Applicative
  | ^^^^^^^^^^^^^^^^^^^^^^^^^^

Data/X509/File.hs:8:1: warning: [-Wunused-imports]
    The import of ‘Data.ASN1.BinaryEncoding’ is redundant
      except perhaps to import instances from ‘Data.ASN1.BinaryEncoding’
    To import instances alone, use: import Data.ASN1.BinaryEncoding()
  |
8 | import Data.ASN1.BinaryEncoding
  | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

Data/X509/File.hs:9:1: warning: [-Wunused-imports]
    The import of ‘Data.ASN1.Encoding’ is redundant
      except perhaps to import instances from ‘Data.ASN1.Encoding’
    To import instances alone, use: import Data.ASN1.Encoding()
  |
9 | import Data.ASN1.Encoding
  | ^^^^^^^^^^^^^^^^^^^^^^^^^

Data/X509/File.hs:13:1: warning: [-Wunused-imports]
    The import of ‘PEM(pemName)’ from module ‘Data.PEM’ is redundant
   |
13 | import Data.PEM (pemParseLBS, pemContent, pemName, PEM)
   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
> /tmp/stackage-build2455/x509-store-1.6.6$ ghc -clear-package-db -global-package-db -package-db=/home/circleci/project/builds/nightly/pkgdb Setup
> /tmp/stackage-build2455/x509-store-1.6.6$ ./Setup copy
Installing library in /home/circleci/project/builds/nightly/lib/x86_64-linux-ghc-8.7.20181122/x509-store-1.6.6-L0Evobarnlf8T6ejKviqHw
> /tmp/stackage-build2455/x509-store-1.6.6$ ghc -clear-package-db -global-package-db -package-db=/home/circleci/project/builds/nightly/pkgdb Setup
> /tmp/stackage-build2455/x509-store-1.6.6$ ./Setup register
Registering library for x509-store-1.6.6..