The build is unreachable.

Build log

> /tmp/stackage-build2454$ stack unpack splitmix-0.0.1@sha256:1ad7a1b32bc068ac5b8d7dedaa7cbcdf72f4ee36de51021b8b95e1dba4d26830
Unpacked splitmix-0.0.1 to /tmp/stackage-build2454/splitmix-0.0.1/
> /tmp/stackage-build2454/splitmix-0.0.1$ 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-build2454/splitmix-0.0.1$ ./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/splitmix-0.0.1 --htmldir=/home/circleci/project/builds/nightly/doc/splitmix-0.0.1 --haddockdir=/home/circleci/project/builds/nightly/doc/splitmix-0.0.1
Configuring splitmix-0.0.1...
> /tmp/stackage-build2454/splitmix-0.0.1$ ghc -clear-package-db -global-package-db -package-db=/home/circleci/project/builds/nightly/pkgdb Setup
> /tmp/stackage-build2454/splitmix-0.0.1$ ./Setup build
Preprocessing library for splitmix-0.0.1..
Building library for splitmix-0.0.1..
[1 of 1] Compiling System.Random.SplitMix ( src/System/Random/SplitMix.hs, dist/build/System/Random/SplitMix.o )
> /tmp/stackage-build2454/splitmix-0.0.1$ ghc -clear-package-db -global-package-db -package-db=/home/circleci/project/builds/nightly/pkgdb Setup
> /tmp/stackage-build2454/splitmix-0.0.1$ ./Setup copy
Installing library in /home/circleci/project/builds/nightly/lib/x86_64-linux-ghc-8.7.20181117/splitmix-0.0.1-8KxtTR0jhxVAvKY2IcSRzI
> /tmp/stackage-build2454/splitmix-0.0.1$ ghc -clear-package-db -global-package-db -package-db=/home/circleci/project/builds/nightly/pkgdb Setup
> /tmp/stackage-build2454/splitmix-0.0.1$ ./Setup register
Registering library for splitmix-0.0.1..