The build is unreachable.
Build log
> /tmp/stackage-build2453$ stack unpack zlib-bindings-0.1.1.5@sha256:0c6f9f81832af2473281fd58631aff8c6bbad24191e00d2a5a6ae2479249043b
Unpacked zlib-bindings-0.1.1.5 to /tmp/stackage-build2453/zlib-bindings-0.1.1.5/
> /tmp/stackage-build2453/zlib-bindings-0.1.1.5$ 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-build2453/zlib-bindings-0.1.1.5$ ./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/zlib-bindings-0.1.1.5 --htmldir=/home/circleci/project/builds/nightly/doc/zlib-bindings-0.1.1.5 --haddockdir=/home/circleci/project/builds/nightly/doc/zlib-bindings-0.1.1.5
Configuring zlib-bindings-0.1.1.5...
> /tmp/stackage-build2453/zlib-bindings-0.1.1.5$ ghc -clear-package-db -global-package-db -package-db=/home/circleci/project/builds/nightly/pkgdb Setup
> /tmp/stackage-build2453/zlib-bindings-0.1.1.5$ ./Setup build
Preprocessing library for zlib-bindings-0.1.1.5..
Building library for zlib-bindings-0.1.1.5..
[1 of 2] Compiling Codec.Zlib.Lowlevel ( Codec/Zlib/Lowlevel.hs, dist/build/Codec/Zlib/Lowlevel.o )
[2 of 2] Compiling Codec.Zlib ( Codec/Zlib.hs, dist/build/Codec/Zlib.o )
> /tmp/stackage-build2453/zlib-bindings-0.1.1.5$ ghc -clear-package-db -global-package-db -package-db=/home/circleci/project/builds/nightly/pkgdb Setup
> /tmp/stackage-build2453/zlib-bindings-0.1.1.5$ ./Setup copy
Installing library in /home/circleci/project/builds/nightly/lib/x86_64-linux-ghc-8.7.20181120/zlib-bindings-0.1.1.5-KS2aCnZyPBqLNpyT6qr2uU
> /tmp/stackage-build2453/zlib-bindings-0.1.1.5$ ghc -clear-package-db -global-package-db -package-db=/home/circleci/project/builds/nightly/pkgdb Setup
> /tmp/stackage-build2453/zlib-bindings-0.1.1.5$ ./Setup register
Registering library for zlib-bindings-0.1.1.5..