The build is unreachable.
Build log
> /tmp/stackage-build2452$ stack unpack interpolation-0.1.0.3@sha256:3511f5a64db202b161b50747967278af71ffe5353bc8fa4a4d99e0832bacd9ac
Unpacked interpolation-0.1.0.3 to /tmp/stackage-build2452/interpolation-0.1.0.3/
> /tmp/stackage-build2452/interpolation-0.1.0.3$ 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/interpolation-0.1.0.3$ ./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/interpolation-0.1.0.3 --htmldir=/home/circleci/project/builds/nightly/doc/interpolation-0.1.0.3 --haddockdir=/home/circleci/project/builds/nightly/doc/interpolation-0.1.0.3
Configuring interpolation-0.1.0.3...
> /tmp/stackage-build2452/interpolation-0.1.0.3$ ghc -clear-package-db -global-package-db -package-db=/home/circleci/project/builds/nightly/pkgdb Setup
> /tmp/stackage-build2452/interpolation-0.1.0.3$ ./Setup build
Preprocessing library for interpolation-0.1.0.3..
Building library for interpolation-0.1.0.3..
[ 1 of 11] Compiling Numeric.Interpolation.NodeList ( src/Numeric/Interpolation/NodeList.hs, dist/build/Numeric/Interpolation/NodeList.o )
[ 2 of 11] Compiling Numeric.Interpolation.Basis.Full ( src/Numeric/Interpolation/Basis/Full.hs, dist/build/Numeric/Interpolation/Basis/Full.o )
[ 3 of 11] Compiling Numeric.Interpolation.Private.List ( private/Numeric/Interpolation/Private/List.hs, dist/build/Numeric/Interpolation/Private/List.o )
[ 4 of 11] Compiling Numeric.Interpolation.Private.Piece ( private/Numeric/Interpolation/Private/Piece.hs, dist/build/Numeric/Interpolation/Private/Piece.o )
[ 5 of 11] Compiling Numeric.Interpolation.Private.Basis ( private/Numeric/Interpolation/Private/Basis.hs, dist/build/Numeric/Interpolation/Private/Basis.o )
[ 6 of 11] Compiling Numeric.Interpolation.Basis.Compact ( src/Numeric/Interpolation/Basis/Compact.hs, dist/build/Numeric/Interpolation/Basis/Compact.o )
[ 7 of 11] Compiling Numeric.Interpolation.Basis ( src/Numeric/Interpolation/Basis.hs, dist/build/Numeric/Interpolation/Basis.o )
[ 8 of 11] Compiling Numeric.Interpolation.Piece ( src/Numeric/Interpolation/Piece.hs, dist/build/Numeric/Interpolation/Piece.o )
[ 9 of 11] Compiling Numeric.Interpolation.Sample ( src/Numeric/Interpolation/Sample.hs, dist/build/Numeric/Interpolation/Sample.o )
[10 of 11] Compiling Numeric.Interpolation.Type ( src/Numeric/Interpolation/Type.hs, dist/build/Numeric/Interpolation/Type.o )
[11 of 11] Compiling Numeric.Interpolation.Piecewise ( src/Numeric/Interpolation/Piecewise.hs, dist/build/Numeric/Interpolation/Piecewise.o )
> /tmp/stackage-build2452/interpolation-0.1.0.3$ ghc -clear-package-db -global-package-db -package-db=/home/circleci/project/builds/nightly/pkgdb Setup
> /tmp/stackage-build2452/interpolation-0.1.0.3$ ./Setup copy
Installing library in /home/circleci/project/builds/nightly/lib/x86_64-linux-ghc-8.7.20181122/interpolation-0.1.0.3-EprSEs98Jb87VDi28CAGYb
> /tmp/stackage-build2452/interpolation-0.1.0.3$ ghc -clear-package-db -global-package-db -package-db=/home/circleci/project/builds/nightly/pkgdb Setup
> /tmp/stackage-build2452/interpolation-0.1.0.3$ ./Setup register
Registering library for interpolation-0.1.0.3..