The build is unreachable.
Build log
> /tmp/stackage-build2454$ stack unpack crypto-enigma-0.0.2.14@sha256:eff7a41e7af14acc89b2792c1668dec8e0be22f15135c8ea9db782fb584e03a3
Unpacked crypto-enigma-0.0.2.14 to /tmp/stackage-build2454/crypto-enigma-0.0.2.14/
> /tmp/stackage-build2454/crypto-enigma-0.0.2.14$ 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/crypto-enigma-0.0.2.14$ ./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/crypto-enigma-0.0.2.14 --htmldir=/home/circleci/project/builds/nightly/doc/crypto-enigma-0.0.2.14 --haddockdir=/home/circleci/project/builds/nightly/doc/crypto-enigma-0.0.2.14
Configuring crypto-enigma-0.0.2.14...
> /tmp/stackage-build2454/crypto-enigma-0.0.2.14$ ghc -clear-package-db -global-package-db -package-db=/home/circleci/project/builds/nightly/pkgdb Setup
> /tmp/stackage-build2454/crypto-enigma-0.0.2.14$ ./Setup build
Preprocessing library for crypto-enigma-0.0.2.14..
Building library for crypto-enigma-0.0.2.14..
[1 of 3] Compiling Crypto.Enigma.Utils ( Crypto/Enigma/Utils.hs, dist/build/Crypto/Enigma/Utils.o )
[2 of 3] Compiling Crypto.Enigma ( Crypto/Enigma.hs, dist/build/Crypto/Enigma.o )
[3 of 3] Compiling Crypto.Enigma.Display ( Crypto/Enigma/Display.hs, dist/build/Crypto/Enigma/Display.o )
> /tmp/stackage-build2454/crypto-enigma-0.0.2.14$ ghc -clear-package-db -global-package-db -package-db=/home/circleci/project/builds/nightly/pkgdb Setup
> /tmp/stackage-build2454/crypto-enigma-0.0.2.14$ ./Setup copy
Installing library in /home/circleci/project/builds/nightly/lib/x86_64-linux-ghc-8.7.20181122/crypto-enigma-0.0.2.14-6VlrFDkCg49Fe5MdDzccGG
> /tmp/stackage-build2454/crypto-enigma-0.0.2.14$ ghc -clear-package-db -global-package-db -package-db=/home/circleci/project/builds/nightly/pkgdb Setup
> /tmp/stackage-build2454/crypto-enigma-0.0.2.14$ ./Setup register
Registering library for crypto-enigma-0.0.2.14..