The build is unreachable.

Build log

> /tmp/stackage-build2452$ stack unpack http-client-tls-0.3.5.3@sha256:25d3b7c42198d0e1d193c0bb323b9a0071d56aacb41960ff448eb663055e15bf
Unpacked http-client-tls-0.3.5.3 to /tmp/stackage-build2452/http-client-tls-0.3.5.3/
> /tmp/stackage-build2452/http-client-tls-0.3.5.3$ 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/http-client-tls-0.3.5.3$ ./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/http-client-tls-0.3.5.3 --htmldir=/home/circleci/project/builds/nightly/doc/http-client-tls-0.3.5.3 --haddockdir=/home/circleci/project/builds/nightly/doc/http-client-tls-0.3.5.3
Configuring http-client-tls-0.3.5.3...
> /tmp/stackage-build2452/http-client-tls-0.3.5.3$ ghc -clear-package-db -global-package-db -package-db=/home/circleci/project/builds/nightly/pkgdb Setup
> /tmp/stackage-build2452/http-client-tls-0.3.5.3$ ./Setup build
Preprocessing library for http-client-tls-0.3.5.3..
Building library for http-client-tls-0.3.5.3..
[1 of 1] Compiling Network.HTTP.Client.TLS ( Network/HTTP/Client/TLS.hs, dist/build/Network/HTTP/Client/TLS.o )
> /tmp/stackage-build2452/http-client-tls-0.3.5.3$ ghc -clear-package-db -global-package-db -package-db=/home/circleci/project/builds/nightly/pkgdb Setup
> /tmp/stackage-build2452/http-client-tls-0.3.5.3$ ./Setup copy
Installing library in /home/circleci/project/builds/nightly/lib/x86_64-linux-ghc-8.7.20181122/http-client-tls-0.3.5.3-JjdS7HOcOPwKPl2chxxWbJ
> /tmp/stackage-build2452/http-client-tls-0.3.5.3$ ghc -clear-package-db -global-package-db -package-db=/home/circleci/project/builds/nightly/pkgdb Setup
> /tmp/stackage-build2452/http-client-tls-0.3.5.3$ ./Setup register
Registering library for http-client-tls-0.3.5.3..