The build is unreachable.

Build log

> /tmp/stackage-build2453$ stack unpack yi-rope-0.11@sha256:3be78519d4e1760ec3f3395c5bf473892e94a37ca028fbbbac5fc906c4677afc
Unpacked yi-rope-0.11 to /tmp/stackage-build2453/yi-rope-0.11/
> /tmp/stackage-build2453/yi-rope-0.11$ 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/yi-rope-0.11$ ./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/yi-rope-0.11 --htmldir=/home/circleci/project/builds/nightly/doc/yi-rope-0.11 --haddockdir=/home/circleci/project/builds/nightly/doc/yi-rope-0.11
Configuring yi-rope-0.11...
> /tmp/stackage-build2453/yi-rope-0.11$ ghc -clear-package-db -global-package-db -package-db=/home/circleci/project/builds/nightly/pkgdb Setup
> /tmp/stackage-build2453/yi-rope-0.11$ ./Setup build
Preprocessing library for yi-rope-0.11..
Building library for yi-rope-0.11..
[1 of 1] Compiling Yi.Rope          ( src/Yi/Rope.hs, dist/build/Yi/Rope.o )
> /tmp/stackage-build2453/yi-rope-0.11$ ghc -clear-package-db -global-package-db -package-db=/home/circleci/project/builds/nightly/pkgdb Setup
> /tmp/stackage-build2453/yi-rope-0.11$ ./Setup copy
Installing library in /home/circleci/project/builds/nightly/lib/x86_64-linux-ghc-8.7.20181120/yi-rope-0.11-EDGtBbnuqPx4ktwNP8V7Ta
> /tmp/stackage-build2453/yi-rope-0.11$ ghc -clear-package-db -global-package-db -package-db=/home/circleci/project/builds/nightly/pkgdb Setup
> /tmp/stackage-build2453/yi-rope-0.11$ ./Setup register
Registering library for yi-rope-0.11..