The build is unreachable.

Build log

> /tmp/stackage-build2453$ stack unpack paripari-0.6.0.0@sha256:be6fec844d0b93e1f22a9c2c88c613cd082c4e3d52420cb2592aa753da6020d6
Unpacked paripari-0.6.0.0 to /tmp/stackage-build2453/paripari-0.6.0.0/
> /tmp/stackage-build2453/paripari-0.6.0.0$ 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-build2453/paripari-0.6.0.0$ ./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/paripari-0.6.0.0 --htmldir=/home/circleci/project/builds/nightly/doc/paripari-0.6.0.0 --haddockdir=/home/circleci/project/builds/nightly/doc/paripari-0.6.0.0
Configuring paripari-0.6.0.0...
> /tmp/stackage-build2453/paripari-0.6.0.0$ ghc -clear-package-db -global-package-db -package-db=/home/circleci/project/builds/nightly/pkgdb Setup
> /tmp/stackage-build2453/paripari-0.6.0.0$ ./Setup build
Preprocessing library for paripari-0.6.0.0..
Building library for paripari-0.6.0.0..
[ 1 of 11] Compiling Paths_paripari   ( dist/build/autogen/Paths_paripari.hs, dist/build/Paths_paripari.o )
[ 2 of 11] Compiling Text.PariPari.Internal.Chunk ( src/Text/PariPari/Internal/Chunk.hs, dist/build/Text/PariPari/Internal/Chunk.o )
[ 3 of 11] Compiling Text.PariPari.Internal.Class ( src/Text/PariPari/Internal/Class.hs, dist/build/Text/PariPari/Internal/Class.o )
[ 4 of 11] Compiling Text.PariPari.Internal.Acceptor ( src/Text/PariPari/Internal/Acceptor.hs, dist/build/Text/PariPari/Internal/Acceptor.o )
[ 5 of 11] Compiling Text.PariPari.Internal.ElementCombinators ( src/Text/PariPari/Internal/ElementCombinators.hs, dist/build/Text/PariPari/Internal/ElementCombinators.o )
[ 6 of 11] Compiling Text.PariPari.Internal.CharCombinators ( src/Text/PariPari/Internal/CharCombinators.hs, dist/build/Text/PariPari/Internal/CharCombinators.o )
[ 7 of 11] Compiling Text.PariPari.Internal.Reporter ( src/Text/PariPari/Internal/Reporter.hs, dist/build/Text/PariPari/Internal/Reporter.o )
[ 8 of 11] Compiling Text.PariPari.Internal.Run ( src/Text/PariPari/Internal/Run.hs, dist/build/Text/PariPari/Internal/Run.o )
[ 9 of 11] Compiling Text.PariPari.Internal.Tracer ( src/Text/PariPari/Internal/Tracer.hs, dist/build/Text/PariPari/Internal/Tracer.o )
[10 of 11] Compiling Text.PariPari    ( src/Text/PariPari.hs, dist/build/Text/PariPari.o )
[11 of 11] Compiling Text.PariPari.Lens ( src/Text/PariPari/Lens.hs, dist/build/Text/PariPari/Lens.o )
Preprocessing executable 'paripari-example' for paripari-0.6.0.0..
Building executable 'paripari-example' for paripari-0.6.0.0..
[1 of 2] Compiling Main             ( example.hs, dist/build/paripari-example/paripari-example-tmp/Main.o )
[2 of 2] Compiling Paths_paripari   ( dist/build/paripari-example/autogen/Paths_paripari.hs, dist/build/paripari-example/paripari-example-tmp/Paths_paripari.o )
Linking dist/build/paripari-example/paripari-example ...
Preprocessing executable 'paripari-specialise-all' for paripari-0.6.0.0..
Building executable 'paripari-specialise-all' for paripari-0.6.0.0..
[1 of 2] Compiling Main             ( specialise-all.hs, dist/build/paripari-specialise-all/paripari-specialise-all-tmp/Main.o )
[2 of 2] Compiling Paths_paripari   ( dist/build/paripari-specialise-all/autogen/Paths_paripari.hs, dist/build/paripari-specialise-all/paripari-specialise-all-tmp/Paths_paripari.o )
Linking dist/build/paripari-specialise-all/paripari-specialise-all ...
> /tmp/stackage-build2453/paripari-0.6.0.0$ ghc -clear-package-db -global-package-db -package-db=/home/circleci/project/builds/nightly/pkgdb Setup
> /tmp/stackage-build2453/paripari-0.6.0.0$ ./Setup copy
Installing library in /home/circleci/project/builds/nightly/lib/x86_64-linux-ghc-8.7.20181118/paripari-0.6.0.0-1vkJwO25VdxHadWYlV97tD
Installing executable paripari-example in /home/circleci/project/builds/nightly/bin
Installing executable paripari-specialise-all in /home/circleci/project/builds/nightly/bin
> /tmp/stackage-build2453/paripari-0.6.0.0$ ghc -clear-package-db -global-package-db -package-db=/home/circleci/project/builds/nightly/pkgdb Setup
> /tmp/stackage-build2453/paripari-0.6.0.0$ ./Setup register
Registering library for paripari-0.6.0.0..