The build is unreachable.

Build log

> /tmp/stackage-build2456$ stack unpack cookie-0.4.4@sha256:34a61659b3294a5650296c16ab31d779c46a3d4c691d5147ef10b0648ad6c914
Unpacked cookie-0.4.4 to /tmp/stackage-build2456/cookie-0.4.4/
> /tmp/stackage-build2456/cookie-0.4.4$ 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-build2456/cookie-0.4.4$ ./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/cookie-0.4.4 --htmldir=/home/circleci/project/builds/nightly/doc/cookie-0.4.4 --haddockdir=/home/circleci/project/builds/nightly/doc/cookie-0.4.4
Configuring cookie-0.4.4...
> /tmp/stackage-build2456/cookie-0.4.4$ ghc -clear-package-db -global-package-db -package-db=/home/circleci/project/builds/nightly/pkgdb Setup
> /tmp/stackage-build2456/cookie-0.4.4$ ./Setup build
Preprocessing library for cookie-0.4.4..
Building library for cookie-0.4.4..
[1 of 1] Compiling Web.Cookie       ( Web/Cookie.hs, dist/build/Web/Cookie.o )
> /tmp/stackage-build2456/cookie-0.4.4$ ghc -clear-package-db -global-package-db -package-db=/home/circleci/project/builds/nightly/pkgdb Setup
> /tmp/stackage-build2456/cookie-0.4.4$ ./Setup copy
Installing library in /home/circleci/project/builds/nightly/lib/x86_64-linux-ghc-8.7.20181116/cookie-0.4.4-8sfxI1tM3Rt3qkx9rRisdk
> /tmp/stackage-build2456/cookie-0.4.4$ ghc -clear-package-db -global-package-db -package-db=/home/circleci/project/builds/nightly/pkgdb Setup
> /tmp/stackage-build2456/cookie-0.4.4$ ./Setup register
Registering library for cookie-0.4.4..