The build is unreachable.

Build log

> /tmp/stackage-build2454$ stack unpack text-conversions-0.3.0@sha256:4e790c777100027df2b1efef72225f1d0899d5815316a2aa91b6e803d865577d
Unpacked text-conversions-0.3.0 to /tmp/stackage-build2454/text-conversions-0.3.0/
> /tmp/stackage-build2454/text-conversions-0.3.0$ 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-build2454/text-conversions-0.3.0$ ./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/text-conversions-0.3.0 --htmldir=/home/circleci/project/builds/nightly/doc/text-conversions-0.3.0 --haddockdir=/home/circleci/project/builds/nightly/doc/text-conversions-0.3.0
Configuring text-conversions-0.3.0...
> /tmp/stackage-build2454/text-conversions-0.3.0$ ghc -clear-package-db -global-package-db -package-db=/home/circleci/project/builds/nightly/pkgdb Setup
> /tmp/stackage-build2454/text-conversions-0.3.0$ ./Setup build
Preprocessing library for text-conversions-0.3.0..
Building library for text-conversions-0.3.0..
[1 of 1] Compiling Data.Text.Conversions ( src/Data/Text/Conversions.hs, dist/build/Data/Text/Conversions.o )
> /tmp/stackage-build2454/text-conversions-0.3.0$ ghc -clear-package-db -global-package-db -package-db=/home/circleci/project/builds/nightly/pkgdb Setup
> /tmp/stackage-build2454/text-conversions-0.3.0$ ./Setup copy
Installing library in /home/circleci/project/builds/nightly/lib/x86_64-linux-ghc-8.7.20181122/text-conversions-0.3.0-5Q4eTUQKTGxKWKAjBjeks7
> /tmp/stackage-build2454/text-conversions-0.3.0$ ghc -clear-package-db -global-package-db -package-db=/home/circleci/project/builds/nightly/pkgdb Setup
> /tmp/stackage-build2454/text-conversions-0.3.0$ ./Setup register
Registering library for text-conversions-0.3.0..