The build is unreachable.

Build log

> /tmp/stackage-build2451$ stack unpack composable-associations-0.1.0.0@sha256:c5ff119aca292b089c14298942c1f38131bf36be417fdcce9943085df171f79c
Unpacked composable-associations-0.1.0.0 to /tmp/stackage-build2451/composable-associations-0.1.0.0/
> /tmp/stackage-build2451/composable-associations-0.1.0.0$ 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-build2451/composable-associations-0.1.0.0$ ./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/composable-associations-0.1.0.0 --htmldir=/home/circleci/project/builds/nightly/doc/composable-associations-0.1.0.0 --haddockdir=/home/circleci/project/builds/nightly/doc/composable-associations-0.1.0.0
Configuring composable-associations-0.1.0.0...
> /tmp/stackage-build2451/composable-associations-0.1.0.0$ ghc -clear-package-db -global-package-db -package-db=/home/circleci/project/builds/nightly/pkgdb Setup
> /tmp/stackage-build2451/composable-associations-0.1.0.0$ ./Setup build
Preprocessing library for composable-associations-0.1.0.0..
Building library for composable-associations-0.1.0.0..
[1 of 1] Compiling Data.ComposableAssociation ( src/Data/ComposableAssociation.hs, dist/build/Data/ComposableAssociation.o )
> /tmp/stackage-build2451/composable-associations-0.1.0.0$ ghc -clear-package-db -global-package-db -package-db=/home/circleci/project/builds/nightly/pkgdb Setup
> /tmp/stackage-build2451/composable-associations-0.1.0.0$ ./Setup copy
Installing library in /home/circleci/project/builds/nightly/lib/x86_64-linux-ghc-8.7.20181119/composable-associations-0.1.0.0-JwnvutTP1lVBQeKxMP0H52
> /tmp/stackage-build2451/composable-associations-0.1.0.0$ ghc -clear-package-db -global-package-db -package-db=/home/circleci/project/builds/nightly/pkgdb Setup
> /tmp/stackage-build2451/composable-associations-0.1.0.0$ ./Setup register
Registering library for composable-associations-0.1.0.0..