The build is unreachable.

Build log

> /tmp/stackage-build2454$ stack unpack x509-1.7.4@sha256:dfc5cc9617dc084c5560dff230644da009e1a63dd71bc954f5c8a210e4ff3f5d
Unpacked x509-1.7.4 to /tmp/stackage-build2454/x509-1.7.4/
> /tmp/stackage-build2454/x509-1.7.4$ 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-build2454/x509-1.7.4$ ./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/x509-1.7.4 --htmldir=/home/circleci/project/builds/nightly/doc/x509-1.7.4 --haddockdir=/home/circleci/project/builds/nightly/doc/x509-1.7.4
Configuring x509-1.7.4...
> /tmp/stackage-build2454/x509-1.7.4$ ghc -clear-package-db -global-package-db -package-db=/home/circleci/project/builds/nightly/pkgdb Setup
> /tmp/stackage-build2454/x509-1.7.4$ ./Setup build
Preprocessing library for x509-1.7.4..
Building library for x509-1.7.4..
[ 1 of 14] Compiling Data.X509.AlgorithmIdentifier ( Data/X509/AlgorithmIdentifier.hs, dist/build/Data/X509/AlgorithmIdentifier.o )
[ 2 of 14] Compiling Data.X509.Internal ( Data/X509/Internal.hs, dist/build/Data/X509/Internal.o )
[ 3 of 14] Compiling Data.X509.ExtensionRaw ( Data/X509/ExtensionRaw.hs, dist/build/Data/X509/ExtensionRaw.o )

Data/X509/ExtensionRaw.hs:17:1: 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()
   |
17 | import Control.Applicative
   | ^^^^^^^^^^^^^^^^^^^^^^^^^^
[ 4 of 14] Compiling Data.X509.DistinguishedName ( Data/X509/DistinguishedName.hs, dist/build/Data/X509/DistinguishedName.o )

Data/X509/DistinguishedName.hs:20:1: 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()
   |
20 | import Control.Applicative
   | ^^^^^^^^^^^^^^^^^^^^^^^^^^

Data/X509/DistinguishedName.hs:22:1: 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()
   |
22 | import           Data.Semigroup
   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[ 5 of 14] Compiling Data.X509.Ext    ( Data/X509/Ext.hs, dist/build/Data/X509/Ext.o )

Data/X509/Ext.hs:46:1: 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()
   |
46 | import Control.Applicative
   | ^^^^^^^^^^^^^^^^^^^^^^^^^^
[ 6 of 14] Compiling Data.X509.CRL    ( Data/X509/CRL.hs, dist/build/Data/X509/CRL.o )

Data/X509/CRL.hs:19:1: 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()
   |
19 | import Control.Applicative
   | ^^^^^^^^^^^^^^^^^^^^^^^^^^
[ 7 of 14] Compiling Data.X509.OID    ( Data/X509/OID.hs, dist/build/Data/X509/OID.o )

Data/X509/OID.hs:15:1: 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()
   |
15 | import Control.Applicative
   | ^^^^^^^^^^^^^^^^^^^^^^^^^^
[ 8 of 14] Compiling Data.X509.PublicKey ( Data/X509/PublicKey.hs, dist/build/Data/X509/PublicKey.o )
[ 9 of 14] Compiling Data.X509.PrivateKey ( Data/X509/PrivateKey.hs, dist/build/Data/X509/PrivateKey.o )
[10 of 14] Compiling Data.X509.EC     ( Data/X509/EC.hs, dist/build/Data/X509/EC.o )
[11 of 14] Compiling Data.X509.Cert   ( Data/X509/Cert.hs, dist/build/Data/X509/Cert.o )
[12 of 14] Compiling Data.X509.Signed ( Data/X509/Signed.hs, dist/build/Data/X509/Signed.o )
[13 of 14] Compiling Data.X509.CertificateChain ( Data/X509/CertificateChain.hs, dist/build/Data/X509/CertificateChain.o )
[14 of 14] Compiling Data.X509        ( Data/X509.hs, dist/build/Data/X509.o )
> /tmp/stackage-build2454/x509-1.7.4$ ghc -clear-package-db -global-package-db -package-db=/home/circleci/project/builds/nightly/pkgdb Setup
> /tmp/stackage-build2454/x509-1.7.4$ ./Setup copy
Installing library in /home/circleci/project/builds/nightly/lib/x86_64-linux-ghc-8.7.20181116/x509-1.7.4-GDLPd5tLPhqJaFNXj5hmuQ
> /tmp/stackage-build2454/x509-1.7.4$ ghc -clear-package-db -global-package-db -package-db=/home/circleci/project/builds/nightly/pkgdb Setup
> /tmp/stackage-build2454/x509-1.7.4$ ./Setup register
Registering library for x509-1.7.4..