The build is unreachable.

Build log

> /tmp/stackage-build2456$ stack unpack text-icu-0.7.0.1@sha256:47904e069f404342b6e4e121d25ddeba5e9fe2e5730ac40d61b293baaaad302a
Unpacked text-icu-0.7.0.1 to /tmp/stackage-build2456/text-icu-0.7.0.1/
> /tmp/stackage-build2456/text-icu-0.7.0.1$ 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-build2456/text-icu-0.7.0.1$ ./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/text-icu-0.7.0.1 --htmldir=/home/circleci/project/builds/nightly/doc/text-icu-0.7.0.1 --haddockdir=/home/circleci/project/builds/nightly/doc/text-icu-0.7.0.1
Configuring text-icu-0.7.0.1...
> /tmp/stackage-build2456/text-icu-0.7.0.1$ ghc -clear-package-db -global-package-db -package-db=/home/circleci/project/builds/nightly/pkgdb Setup
> /tmp/stackage-build2456/text-icu-0.7.0.1$ ./Setup build
Preprocessing library for text-icu-0.7.0.1..
Building library for text-icu-0.7.0.1..
[ 1 of 21] Compiling Data.Text.ICU.Break.Types ( Data/Text/ICU/Break/Types.hs, dist/build/Data/Text/ICU/Break/Types.o )
[ 2 of 21] Compiling Data.Text.ICU.Collate.Internal ( Data/Text/ICU/Collate/Internal.hs, dist/build/Data/Text/ICU/Collate/Internal.o )
[ 3 of 21] Compiling Data.Text.ICU.Error.Internal ( dist/build/Data/Text/ICU/Error/Internal.hs, dist/build/Data/Text/ICU/Error/Internal.o )
[ 4 of 21] Compiling Data.Text.ICU.Error ( dist/build/Data/Text/ICU/Error.hs, dist/build/Data/Text/ICU/Error.o )
[ 5 of 21] Compiling Data.Text.ICU.Convert.Internal ( Data/Text/ICU/Convert/Internal.hs, dist/build/Data/Text/ICU/Convert/Internal.o )
[ 6 of 21] Compiling Data.Text.ICU.Internal ( dist/build/Data/Text/ICU/Internal.hs, dist/build/Data/Text/ICU/Internal.o )
[ 7 of 21] Compiling Data.Text.ICU.Convert ( Data/Text/ICU/Convert.hs, dist/build/Data/Text/ICU/Convert.o )
[ 8 of 21] Compiling Data.Text.ICU.Collate ( dist/build/Data/Text/ICU/Collate.hs, dist/build/Data/Text/ICU/Collate.o )
[ 9 of 21] Compiling Data.Text.ICU.Collate.Pure ( Data/Text/ICU/Collate/Pure.hs, dist/build/Data/Text/ICU/Collate/Pure.o )
[10 of 21] Compiling Data.Text.ICU.Break ( dist/build/Data/Text/ICU/Break.hs, dist/build/Data/Text/ICU/Break.o )
[11 of 21] Compiling Data.Text.ICU.Break.Pure ( Data/Text/ICU/Break/Pure.hs, dist/build/Data/Text/ICU/Break/Pure.o )
[12 of 21] Compiling Data.Text.ICU.Iterator ( Data/Text/ICU/Iterator.hs, dist/build/Data/Text/ICU/Iterator.o )
[13 of 21] Compiling Data.Text.ICU.Normalize.Internal ( dist/build/Data/Text/ICU/Normalize/Internal.hs, dist/build/Data/Text/ICU/Normalize/Internal.o )
[14 of 21] Compiling Data.Text.ICU.Normalize ( dist/build/Data/Text/ICU/Normalize.hs, dist/build/Data/Text/ICU/Normalize.o )
[15 of 21] Compiling Data.Text.ICU.Char ( dist/build/Data/Text/ICU/Char.hs, dist/build/Data/Text/ICU/Char.o )
[16 of 21] Compiling Data.Text.ICU.Regex.Internal ( dist/build/Data/Text/ICU/Regex/Internal.hs, dist/build/Data/Text/ICU/Regex/Internal.o )
[17 of 21] Compiling Data.Text.ICU.Regex ( Data/Text/ICU/Regex.hs, dist/build/Data/Text/ICU/Regex.o )
[18 of 21] Compiling Data.Text.ICU.Regex.Pure ( Data/Text/ICU/Regex/Pure.hs, dist/build/Data/Text/ICU/Regex/Pure.o )
[19 of 21] Compiling Data.Text.ICU.Text ( Data/Text/ICU/Text.hs, dist/build/Data/Text/ICU/Text.o )
[20 of 21] Compiling Data.Text.ICU    ( Data/Text/ICU.hs, dist/build/Data/Text/ICU.o )
[21 of 21] Compiling Data.Text.ICU.Types ( Data/Text/ICU/Types.hs, dist/build/Data/Text/ICU/Types.o )
> /tmp/stackage-build2456/text-icu-0.7.0.1$ ghc -clear-package-db -global-package-db -package-db=/home/circleci/project/builds/nightly/pkgdb Setup
> /tmp/stackage-build2456/text-icu-0.7.0.1$ ./Setup copy
Installing library in /home/circleci/project/builds/nightly/lib/x86_64-linux-ghc-8.7.20181116/text-icu-0.7.0.1-EZ4N4zbiBEQ3m6XFXMQhtj
> /tmp/stackage-build2456/text-icu-0.7.0.1$ ghc -clear-package-db -global-package-db -package-db=/home/circleci/project/builds/nightly/pkgdb Setup
> /tmp/stackage-build2456/text-icu-0.7.0.1$ ./Setup register
Registering library for text-icu-0.7.0.1..