The build is unreachable.

Build log

> /tmp/stackage-build2455$ stack unpack stopwatch-0.1.0.5@sha256:da0e8705849ede493ed647dd86af1793a43e2c993ae0059f3da934129b6bfecf
Unpacked stopwatch-0.1.0.5 to /tmp/stackage-build2455/stopwatch-0.1.0.5/
> /tmp/stackage-build2455/stopwatch-0.1.0.5$ 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-build2455/stopwatch-0.1.0.5$ ./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/stopwatch-0.1.0.5 --htmldir=/home/circleci/project/builds/nightly/doc/stopwatch-0.1.0.5 --haddockdir=/home/circleci/project/builds/nightly/doc/stopwatch-0.1.0.5
Configuring stopwatch-0.1.0.5...
> /tmp/stackage-build2455/stopwatch-0.1.0.5$ ghc -clear-package-db -global-package-db -package-db=/home/circleci/project/builds/nightly/pkgdb Setup
> /tmp/stackage-build2455/stopwatch-0.1.0.5$ ./Setup build
Preprocessing library for stopwatch-0.1.0.5..
Building library for stopwatch-0.1.0.5..
[1 of 1] Compiling Control.StopWatch ( src/Control/StopWatch.hs, dist/build/Control/StopWatch.o )
> /tmp/stackage-build2455/stopwatch-0.1.0.5$ ghc -clear-package-db -global-package-db -package-db=/home/circleci/project/builds/nightly/pkgdb Setup
> /tmp/stackage-build2455/stopwatch-0.1.0.5$ ./Setup copy
Installing library in /home/circleci/project/builds/nightly/lib/x86_64-linux-ghc-8.7.20181122/stopwatch-0.1.0.5-1A0fRLoTEuJAqSforOKHgs
> /tmp/stackage-build2455/stopwatch-0.1.0.5$ ghc -clear-package-db -global-package-db -package-db=/home/circleci/project/builds/nightly/pkgdb Setup
> /tmp/stackage-build2455/stopwatch-0.1.0.5$ ./Setup register
Registering library for stopwatch-0.1.0.5..