The build is unreachable.

Build log

> /tmp/stackage-build2451$ stack unpack asn1-encoding-0.9.5@sha256:7d4acf178ef17aad650f2073dd2ed94febb1e468fddb0d5ca65c1a54caffcfb8
Unpacked asn1-encoding-0.9.5 to /tmp/stackage-build2451/asn1-encoding-0.9.5/
> /tmp/stackage-build2451/asn1-encoding-0.9.5$ 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-build2451/asn1-encoding-0.9.5$ ./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/asn1-encoding-0.9.5 --htmldir=/home/circleci/project/builds/nightly/doc/asn1-encoding-0.9.5 --haddockdir=/home/circleci/project/builds/nightly/doc/asn1-encoding-0.9.5
Configuring asn1-encoding-0.9.5...
> /tmp/stackage-build2451/asn1-encoding-0.9.5$ ghc -clear-package-db -global-package-db -package-db=/home/circleci/project/builds/nightly/pkgdb Setup
> /tmp/stackage-build2451/asn1-encoding-0.9.5$ ./Setup build
Preprocessing library for asn1-encoding-0.9.5..
Building library for asn1-encoding-0.9.5..
[ 1 of 12] Compiling Data.ASN1.Error  ( Data/ASN1/Error.hs, dist/build/Data/ASN1/Error.o )
[ 2 of 12] Compiling Data.ASN1.Get    ( Data/ASN1/Get.hs, dist/build/Data/ASN1/Get.o )
[ 3 of 12] Compiling Data.ASN1.Internal ( Data/ASN1/Internal.hs, dist/build/Data/ASN1/Internal.o )
[ 4 of 12] Compiling Data.ASN1.Object ( Data/ASN1/Object.hs, dist/build/Data/ASN1/Object.o )
[ 5 of 12] Compiling Data.ASN1.Serialize ( Data/ASN1/Serialize.hs, dist/build/Data/ASN1/Serialize.o )
[ 6 of 12] Compiling Data.ASN1.BinaryEncoding.Writer ( Data/ASN1/BinaryEncoding/Writer.hs, dist/build/Data/ASN1/BinaryEncoding/Writer.o )
[ 7 of 12] Compiling Data.ASN1.BinaryEncoding.Parse ( Data/ASN1/BinaryEncoding/Parse.hs, dist/build/Data/ASN1/BinaryEncoding/Parse.o )
[ 8 of 12] Compiling Data.ASN1.BinaryEncoding.Raw ( Data/ASN1/BinaryEncoding/Raw.hs, dist/build/Data/ASN1/BinaryEncoding/Raw.o )
[ 9 of 12] Compiling Data.ASN1.Stream ( Data/ASN1/Stream.hs, dist/build/Data/ASN1/Stream.o )
[10 of 12] Compiling Data.ASN1.Prim   ( Data/ASN1/Prim.hs, dist/build/Data/ASN1/Prim.o )

Data/ASN1/Prim.hs:59:1: 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()
   |
59 | import Control.Applicative
   | ^^^^^^^^^^^^^^^^^^^^^^^^^^
[11 of 12] Compiling Data.ASN1.Encoding ( Data/ASN1/Encoding.hs, dist/build/Data/ASN1/Encoding.o )
[12 of 12] Compiling Data.ASN1.BinaryEncoding ( Data/ASN1/BinaryEncoding.hs, dist/build/Data/ASN1/BinaryEncoding.o )
> /tmp/stackage-build2451/asn1-encoding-0.9.5$ ghc -clear-package-db -global-package-db -package-db=/home/circleci/project/builds/nightly/pkgdb Setup
> /tmp/stackage-build2451/asn1-encoding-0.9.5$ ./Setup copy
Installing library in /home/circleci/project/builds/nightly/lib/x86_64-linux-ghc-8.7.20181121/asn1-encoding-0.9.5-F5Be8yTLY1IIqdvxL6zofm
> /tmp/stackage-build2451/asn1-encoding-0.9.5$ ghc -clear-package-db -global-package-db -package-db=/home/circleci/project/builds/nightly/pkgdb Setup
> /tmp/stackage-build2451/asn1-encoding-0.9.5$ ./Setup register
Registering library for asn1-encoding-0.9.5..