The build is unreachable.

Build log

> /tmp/stackage-build2453$ stack unpack format-numbers-0.1.0.0@sha256:dbf701598c9e33c0849072bb37cc3630c56caba65b6afc86c664e4611391151c
Unpacked format-numbers-0.1.0.0 to /tmp/stackage-build2453/format-numbers-0.1.0.0/
> /tmp/stackage-build2453/format-numbers-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-build2453/format-numbers-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/format-numbers-0.1.0.0 --htmldir=/home/circleci/project/builds/nightly/doc/format-numbers-0.1.0.0 --haddockdir=/home/circleci/project/builds/nightly/doc/format-numbers-0.1.0.0
Configuring format-numbers-0.1.0.0...
> /tmp/stackage-build2453/format-numbers-0.1.0.0$ ghc -clear-package-db -global-package-db -package-db=/home/circleci/project/builds/nightly/pkgdb Setup
> /tmp/stackage-build2453/format-numbers-0.1.0.0$ ./Setup build
Preprocessing library for format-numbers-0.1.0.0..
Building library for format-numbers-0.1.0.0..
[1 of 2] Compiling Data.Text.Format.Numbers ( src/Data/Text/Format/Numbers.hs, dist/build/Data/Text/Format/Numbers.o )
[2 of 2] Compiling Paths_format_numbers ( dist/build/autogen/Paths_format_numbers.hs, dist/build/Paths_format_numbers.o )
> /tmp/stackage-build2453/format-numbers-0.1.0.0$ ghc -clear-package-db -global-package-db -package-db=/home/circleci/project/builds/nightly/pkgdb Setup
> /tmp/stackage-build2453/format-numbers-0.1.0.0$ ./Setup copy
Installing library in /home/circleci/project/builds/nightly/lib/x86_64-linux-ghc-8.7.20181120/format-numbers-0.1.0.0-FdCuRIzfjTyBiVMD6whWB2
> /tmp/stackage-build2453/format-numbers-0.1.0.0$ ghc -clear-package-db -global-package-db -package-db=/home/circleci/project/builds/nightly/pkgdb Setup
> /tmp/stackage-build2453/format-numbers-0.1.0.0$ ./Setup register
Registering library for format-numbers-0.1.0.0..