The build is unreachable.

Build log

> /tmp/stackage-build2456$ stack unpack http-types-0.12.2@sha256:fabf70c7b0da898afeacaccec101cf2738afed7213dd3bd4d43efff63cd22827
Unpacked http-types-0.12.2 to /tmp/stackage-build2456/http-types-0.12.2/
> /tmp/stackage-build2456/http-types-0.12.2$ 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/http-types-0.12.2$ ./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/http-types-0.12.2 --htmldir=/home/circleci/project/builds/nightly/doc/http-types-0.12.2 --haddockdir=/home/circleci/project/builds/nightly/doc/http-types-0.12.2
Configuring http-types-0.12.2...
> /tmp/stackage-build2456/http-types-0.12.2$ ghc -clear-package-db -global-package-db -package-db=/home/circleci/project/builds/nightly/pkgdb Setup
> /tmp/stackage-build2456/http-types-0.12.2$ ./Setup build
Preprocessing library for http-types-0.12.2..
Building library for http-types-0.12.2..
[1 of 7] Compiling Network.HTTP.Types.Header ( Network/HTTP/Types/Header.hs, dist/build/Network/HTTP/Types/Header.o )
[2 of 7] Compiling Network.HTTP.Types.Method ( Network/HTTP/Types/Method.hs, dist/build/Network/HTTP/Types/Method.o )
[3 of 7] Compiling Network.HTTP.Types.Status ( Network/HTTP/Types/Status.hs, dist/build/Network/HTTP/Types/Status.o )
[4 of 7] Compiling Network.HTTP.Types.URI ( Network/HTTP/Types/URI.hs, dist/build/Network/HTTP/Types/URI.o )
[5 of 7] Compiling Network.HTTP.Types.QueryLike ( Network/HTTP/Types/QueryLike.hs, dist/build/Network/HTTP/Types/QueryLike.o )
[6 of 7] Compiling Network.HTTP.Types.Version ( Network/HTTP/Types/Version.hs, dist/build/Network/HTTP/Types/Version.o )
[7 of 7] Compiling Network.HTTP.Types ( Network/HTTP/Types.hs, dist/build/Network/HTTP/Types.o )
> /tmp/stackage-build2456/http-types-0.12.2$ ghc -clear-package-db -global-package-db -package-db=/home/circleci/project/builds/nightly/pkgdb Setup
> /tmp/stackage-build2456/http-types-0.12.2$ ./Setup copy
Installing library in /home/circleci/project/builds/nightly/lib/x86_64-linux-ghc-8.7.20181117/http-types-0.12.2-7gTWKB6Rb7XJRuhOmwxylv
> /tmp/stackage-build2456/http-types-0.12.2$ ghc -clear-package-db -global-package-db -package-db=/home/circleci/project/builds/nightly/pkgdb Setup
> /tmp/stackage-build2456/http-types-0.12.2$ ./Setup register
Registering library for http-types-0.12.2..