The build is unreachable.

Build log

> /tmp/stackage-build2452$ stack unpack hformat-0.3.3.1@sha256:76fb3854ef5d74821fa32d3932a701be062f9c18513ec4709d98fcde8d9a2fdc
Unpacked hformat-0.3.3.1 to /tmp/stackage-build2452/hformat-0.3.3.1/
> /tmp/stackage-build2452/hformat-0.3.3.1$ 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/hformat-0.3.3.1$ ./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/hformat-0.3.3.1 --htmldir=/home/circleci/project/builds/nightly/doc/hformat-0.3.3.1 --haddockdir=/home/circleci/project/builds/nightly/doc/hformat-0.3.3.1
Configuring hformat-0.3.3.1...
> /tmp/stackage-build2452/hformat-0.3.3.1$ ghc -clear-package-db -global-package-db -package-db=/home/circleci/project/builds/nightly/pkgdb Setup
> /tmp/stackage-build2452/hformat-0.3.3.1$ ./Setup build
Preprocessing library for hformat-0.3.3.1..
Building library for hformat-0.3.3.1..
[1 of 3] Compiling Text.Format.Flags ( src/Text/Format/Flags.hs, dist/build/Text/Format/Flags.o )
[2 of 3] Compiling Text.Format      ( src/Text/Format.hs, dist/build/Text/Format.o )
[3 of 3] Compiling Text.Format.Colored ( src/Text/Format/Colored.hs, dist/build/Text/Format/Colored.o )
> /tmp/stackage-build2452/hformat-0.3.3.1$ ghc -clear-package-db -global-package-db -package-db=/home/circleci/project/builds/nightly/pkgdb Setup
> /tmp/stackage-build2452/hformat-0.3.3.1$ ./Setup copy
Installing library in /home/circleci/project/builds/nightly/lib/x86_64-linux-ghc-8.7.20181119/hformat-0.3.3.1-C29pIGHhwcqDSM1yfJZhkZ
> /tmp/stackage-build2452/hformat-0.3.3.1$ ghc -clear-package-db -global-package-db -package-db=/home/circleci/project/builds/nightly/pkgdb Setup
> /tmp/stackage-build2452/hformat-0.3.3.1$ ./Setup register
Registering library for hformat-0.3.3.1..