The build is unreachable.

Build log

> /tmp/stackage-build2451$ stack unpack algebraic-graphs-0.2@sha256:c0700acf56290af3c5e00c2ce83efa16d3524f47a9ed89991353c0f2fd3fb15f
Unpacked algebraic-graphs-0.2 to /tmp/stackage-build2451/algebraic-graphs-0.2/
> /tmp/stackage-build2451/algebraic-graphs-0.2$ 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-build2451/algebraic-graphs-0.2$ ./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/algebraic-graphs-0.2 --htmldir=/home/circleci/project/builds/nightly/doc/algebraic-graphs-0.2 --haddockdir=/home/circleci/project/builds/nightly/doc/algebraic-graphs-0.2
Configuring algebraic-graphs-0.2...
> /tmp/stackage-build2451/algebraic-graphs-0.2$ ghc -clear-package-db -global-package-db -package-db=/home/circleci/project/builds/nightly/pkgdb Setup
> /tmp/stackage-build2451/algebraic-graphs-0.2$ ./Setup build
Preprocessing library for algebraic-graphs-0.2..
Building library for algebraic-graphs-0.2..
[ 1 of 23] Compiling Algebra.Graph.AdjacencyIntMap.Internal ( src/Algebra/Graph/AdjacencyIntMap/Internal.hs, dist/build/Algebra/Graph/AdjacencyIntMap/Internal.o )
[ 2 of 23] Compiling Algebra.Graph.AdjacencyMap.Internal ( src/Algebra/Graph/AdjacencyMap/Internal.hs, dist/build/Algebra/Graph/AdjacencyMap/Internal.o )
[ 3 of 23] Compiling Algebra.Graph.Internal ( src/Algebra/Graph/Internal.hs, dist/build/Algebra/Graph/Internal.o )
[ 4 of 23] Compiling Algebra.Graph.Label ( src/Algebra/Graph/Label.hs, dist/build/Algebra/Graph/Label.o )
[ 5 of 23] Compiling Algebra.Graph.Relation.Internal ( src/Algebra/Graph/Relation/Internal.hs, dist/build/Algebra/Graph/Relation/Internal.o )
[ 6 of 23] Compiling Algebra.Graph.Relation ( src/Algebra/Graph/Relation.hs, dist/build/Algebra/Graph/Relation.o )
[ 7 of 23] Compiling Data.Graph.Typed ( src/Data/Graph/Typed.hs, dist/build/Data/Graph/Typed.o )
[ 8 of 23] Compiling Algebra.Graph.AdjacencyMap ( src/Algebra/Graph/AdjacencyMap.hs, dist/build/Algebra/Graph/AdjacencyMap.o )
[ 9 of 23] Compiling Algebra.Graph.AdjacencyIntMap ( src/Algebra/Graph/AdjacencyIntMap.hs, dist/build/Algebra/Graph/AdjacencyIntMap.o )
[10 of 23] Compiling Algebra.Graph    ( src/Algebra/Graph.hs, dist/build/Algebra/Graph.o )
[11 of 23] Compiling Algebra.Graph.ToGraph ( src/Algebra/Graph/ToGraph.hs, dist/build/Algebra/Graph/ToGraph.o )
[12 of 23] Compiling Algebra.Graph.Export ( src/Algebra/Graph/Export.hs, dist/build/Algebra/Graph/Export.o )
[13 of 23] Compiling Algebra.Graph.Export.Dot ( src/Algebra/Graph/Export/Dot.hs, dist/build/Algebra/Graph/Export/Dot.o )
[14 of 23] Compiling Algebra.Graph.NonEmpty ( src/Algebra/Graph/NonEmpty.hs, dist/build/Algebra/Graph/NonEmpty.o )
[15 of 23] Compiling Algebra.Graph.Fold ( src/Algebra/Graph/Fold.hs, dist/build/Algebra/Graph/Fold.o )
[16 of 23] Compiling Algebra.Graph.HigherKinded.Class ( src/Algebra/Graph/HigherKinded/Class.hs, dist/build/Algebra/Graph/HigherKinded/Class.o )
[17 of 23] Compiling Algebra.Graph.Class ( src/Algebra/Graph/Class.hs, dist/build/Algebra/Graph/Class.o )
[18 of 23] Compiling Algebra.Graph.Relation.InternalDerived ( src/Algebra/Graph/Relation/InternalDerived.hs, dist/build/Algebra/Graph/Relation/InternalDerived.o )
[19 of 23] Compiling Algebra.Graph.Relation.Transitive ( src/Algebra/Graph/Relation/Transitive.hs, dist/build/Algebra/Graph/Relation/Transitive.o )
[20 of 23] Compiling Algebra.Graph.Relation.Symmetric ( src/Algebra/Graph/Relation/Symmetric.hs, dist/build/Algebra/Graph/Relation/Symmetric.o )
[21 of 23] Compiling Algebra.Graph.Relation.Reflexive ( src/Algebra/Graph/Relation/Reflexive.hs, dist/build/Algebra/Graph/Relation/Reflexive.o )
[22 of 23] Compiling Algebra.Graph.Relation.Preorder ( src/Algebra/Graph/Relation/Preorder.hs, dist/build/Algebra/Graph/Relation/Preorder.o )
[23 of 23] Compiling Algebra.Graph.Labelled ( src/Algebra/Graph/Labelled.hs, dist/build/Algebra/Graph/Labelled.o )
> /tmp/stackage-build2451/algebraic-graphs-0.2$ ghc -clear-package-db -global-package-db -package-db=/home/circleci/project/builds/nightly/pkgdb Setup
> /tmp/stackage-build2451/algebraic-graphs-0.2$ ./Setup copy
Installing library in /home/circleci/project/builds/nightly/lib/x86_64-linux-ghc-8.7.20181121/algebraic-graphs-0.2-46NAiibTpFMII84fECn7nW
> /tmp/stackage-build2451/algebraic-graphs-0.2$ ghc -clear-package-db -global-package-db -package-db=/home/circleci/project/builds/nightly/pkgdb Setup
> /tmp/stackage-build2451/algebraic-graphs-0.2$ ./Setup register
Registering library for algebraic-graphs-0.2..