The build is unreachable.

Build log

> /tmp/stackage-build2456$ stack unpack dockerfile-0.2.0@sha256:dc02dea8db0766d191220c641fdf3aa552c9e13b5c25ee1a4501095fd4ae5b0e
Unpacked dockerfile-0.2.0 to /tmp/stackage-build2456/dockerfile-0.2.0/
> /tmp/stackage-build2456/dockerfile-0.2.0$ 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-build2456/dockerfile-0.2.0$ ./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/dockerfile-0.2.0 --htmldir=/home/circleci/project/builds/nightly/doc/dockerfile-0.2.0 --haddockdir=/home/circleci/project/builds/nightly/doc/dockerfile-0.2.0
Configuring dockerfile-0.2.0...
> /tmp/stackage-build2456/dockerfile-0.2.0$ ghc -clear-package-db -global-package-db -package-db=/home/circleci/project/builds/nightly/pkgdb Setup
> /tmp/stackage-build2456/dockerfile-0.2.0$ ./Setup build
Preprocessing library for dockerfile-0.2.0..
Building library for dockerfile-0.2.0..
[1 of 2] Compiling Control.Monad.Writer ( Control/Monad/Writer.hs, dist/build/Control/Monad/Writer.o )
[2 of 2] Compiling Data.Docker      ( Data/Docker.hs, dist/build/Data/Docker.o )
> /tmp/stackage-build2456/dockerfile-0.2.0$ ghc -clear-package-db -global-package-db -package-db=/home/circleci/project/builds/nightly/pkgdb Setup
> /tmp/stackage-build2456/dockerfile-0.2.0$ ./Setup copy
Installing library in /home/circleci/project/builds/nightly/lib/x86_64-linux-ghc-8.7.20181117/dockerfile-0.2.0-KirG9aYtNV45mW27lihfXG
> /tmp/stackage-build2456/dockerfile-0.2.0$ ghc -clear-package-db -global-package-db -package-db=/home/circleci/project/builds/nightly/pkgdb Setup
> /tmp/stackage-build2456/dockerfile-0.2.0$ ./Setup register
Registering library for dockerfile-0.2.0..