The build is unreachable.

Build log

> /tmp/stackage-build2454$ stack unpack atomic-write-0.2.0.5@sha256:882decb21c0c41e25ec7e91ca39689966357d5c9b07c58d79d15d194950484a8
Unpacked atomic-write-0.2.0.5 to /tmp/stackage-build2454/atomic-write-0.2.0.5/
> /tmp/stackage-build2454/atomic-write-0.2.0.5$ 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-build2454/atomic-write-0.2.0.5$ ./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/atomic-write-0.2.0.5 --htmldir=/home/circleci/project/builds/nightly/doc/atomic-write-0.2.0.5 --haddockdir=/home/circleci/project/builds/nightly/doc/atomic-write-0.2.0.5
Configuring atomic-write-0.2.0.5...
> /tmp/stackage-build2454/atomic-write-0.2.0.5$ ghc -clear-package-db -global-package-db -package-db=/home/circleci/project/builds/nightly/pkgdb Setup
> /tmp/stackage-build2454/atomic-write-0.2.0.5$ ./Setup build
Preprocessing library for atomic-write-0.2.0.5..
Building library for atomic-write-0.2.0.5..
[1 of 6] Compiling System.AtomicWrite.Internal ( src/System/AtomicWrite/Internal.hs, dist/build/System/AtomicWrite/Internal.o )
[2 of 6] Compiling System.AtomicWrite.Writer.ByteString ( src/System/AtomicWrite/Writer/ByteString.hs, dist/build/System/AtomicWrite/Writer/ByteString.o )
[3 of 6] Compiling System.AtomicWrite.Writer.ByteStringBuilder ( src/System/AtomicWrite/Writer/ByteStringBuilder.hs, dist/build/System/AtomicWrite/Writer/ByteStringBuilder.o )
[4 of 6] Compiling System.AtomicWrite.Writer.LazyByteString ( src/System/AtomicWrite/Writer/LazyByteString.hs, dist/build/System/AtomicWrite/Writer/LazyByteString.o )
[5 of 6] Compiling System.AtomicWrite.Writer.String ( src/System/AtomicWrite/Writer/String.hs, dist/build/System/AtomicWrite/Writer/String.o )
[6 of 6] Compiling System.AtomicWrite.Writer.Text ( src/System/AtomicWrite/Writer/Text.hs, dist/build/System/AtomicWrite/Writer/Text.o )
> /tmp/stackage-build2454/atomic-write-0.2.0.5$ ghc -clear-package-db -global-package-db -package-db=/home/circleci/project/builds/nightly/pkgdb Setup
> /tmp/stackage-build2454/atomic-write-0.2.0.5$ ./Setup copy
Installing library in /home/circleci/project/builds/nightly/lib/x86_64-linux-ghc-8.7.20181122/atomic-write-0.2.0.5-FJAg6MwLxIuJDZd9qlg0Tv
> /tmp/stackage-build2454/atomic-write-0.2.0.5$ ghc -clear-package-db -global-package-db -package-db=/home/circleci/project/builds/nightly/pkgdb Setup
> /tmp/stackage-build2454/atomic-write-0.2.0.5$ ./Setup register
Registering library for atomic-write-0.2.0.5..