The build is unreachable.

Build log

> /tmp/stackage-build2452$ stack unpack cereal-time-0.1.0.0@sha256:2ad5cb0e7bdd0fa8b6cbdfcfe6b9259efb2a188e33c3ce039155d63edda51ffc
Unpacked cereal-time-0.1.0.0 to /tmp/stackage-build2452/cereal-time-0.1.0.0/
> /tmp/stackage-build2452/cereal-time-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-build2452/cereal-time-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/cereal-time-0.1.0.0 --htmldir=/home/circleci/project/builds/nightly/doc/cereal-time-0.1.0.0 --haddockdir=/home/circleci/project/builds/nightly/doc/cereal-time-0.1.0.0
Configuring cereal-time-0.1.0.0...
> /tmp/stackage-build2452/cereal-time-0.1.0.0$ ghc -clear-package-db -global-package-db -package-db=/home/circleci/project/builds/nightly/pkgdb Setup
> /tmp/stackage-build2452/cereal-time-0.1.0.0$ ./Setup build
Preprocessing library for cereal-time-0.1.0.0..
Building library for cereal-time-0.1.0.0..
[1 of 5] Compiling Data.Time.Calendar.Serialize ( src/Data/Time/Calendar/Serialize.hs, dist/build/Data/Time/Calendar/Serialize.o )
[2 of 5] Compiling Data.Time.Clock.Serialize ( src/Data/Time/Clock/Serialize.hs, dist/build/Data/Time/Clock/Serialize.o )
[3 of 5] Compiling Data.Time.Clock.TAI.Serialize ( src/Data/Time/Clock/TAI/Serialize.hs, dist/build/Data/Time/Clock/TAI/Serialize.o )
[4 of 5] Compiling Data.Time.LocalTime.Serialize ( src/Data/Time/LocalTime/Serialize.hs, dist/build/Data/Time/LocalTime/Serialize.o )
[5 of 5] Compiling Data.Time.Format.Serialize ( src/Data/Time/Format/Serialize.hs, dist/build/Data/Time/Format/Serialize.o )
> /tmp/stackage-build2452/cereal-time-0.1.0.0$ ghc -clear-package-db -global-package-db -package-db=/home/circleci/project/builds/nightly/pkgdb Setup
> /tmp/stackage-build2452/cereal-time-0.1.0.0$ ./Setup copy
Installing library in /home/circleci/project/builds/nightly/lib/x86_64-linux-ghc-8.7.20181122/cereal-time-0.1.0.0-7yh3uUtJIh4CUKAeZ0ozp
> /tmp/stackage-build2452/cereal-time-0.1.0.0$ ghc -clear-package-db -global-package-db -package-db=/home/circleci/project/builds/nightly/pkgdb Setup
> /tmp/stackage-build2452/cereal-time-0.1.0.0$ ./Setup register
Registering library for cereal-time-0.1.0.0..