The build is unreachable.

Build log

> /tmp/stackage-build2452$ stack unpack projectroot-0.2.0.1@sha256:73002eca144efd0a55b1f412c6a9ab8f2b1ba896230603f690b7a0e84c988857
Unpacked projectroot-0.2.0.1 to /tmp/stackage-build2452/projectroot-0.2.0.1/
> /tmp/stackage-build2452/projectroot-0.2.0.1$ 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-build2452/projectroot-0.2.0.1$ ./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/projectroot-0.2.0.1 --htmldir=/home/circleci/project/builds/nightly/doc/projectroot-0.2.0.1 --haddockdir=/home/circleci/project/builds/nightly/doc/projectroot-0.2.0.1
Configuring projectroot-0.2.0.1...
> /tmp/stackage-build2452/projectroot-0.2.0.1$ ghc -clear-package-db -global-package-db -package-db=/home/circleci/project/builds/nightly/pkgdb Setup
> /tmp/stackage-build2452/projectroot-0.2.0.1$ ./Setup build
Preprocessing library for projectroot-0.2.0.1..
Building library for projectroot-0.2.0.1..
[1 of 1] Compiling System.Directory.ProjectRoot ( src/System/Directory/ProjectRoot.hs, dist/build/System/Directory/ProjectRoot.o )
> /tmp/stackage-build2452/projectroot-0.2.0.1$ ghc -clear-package-db -global-package-db -package-db=/home/circleci/project/builds/nightly/pkgdb Setup
> /tmp/stackage-build2452/projectroot-0.2.0.1$ ./Setup copy
Installing library in /home/circleci/project/builds/nightly/lib/x86_64-linux-ghc-8.7.20181113/projectroot-0.2.0.1-GqFGRzdy0LU7P5B6qWE0zz
> /tmp/stackage-build2452/projectroot-0.2.0.1$ ghc -clear-package-db -global-package-db -package-db=/home/circleci/project/builds/nightly/pkgdb Setup
> /tmp/stackage-build2452/projectroot-0.2.0.1$ ./Setup register
Registering library for projectroot-0.2.0.1..