Resolving dependencies... Starting StateVar-1.2.1 Starting auto-update-0.1.6 Starting appar-0.1.8 Starting base-compat-0.11.2 Building StateVar-1.2.1 Building auto-update-0.1.6 Building appar-0.1.8 Building base-compat-0.11.2 Completed StateVar-1.2.1 Starting base-orphans-0.8.4 Completed appar-0.1.8 Starting base64-bytestring-1.2.0.1 Completed auto-update-0.1.6 Starting basement-0.0.11 Building base-orphans-0.8.4 Building base64-bytestring-1.2.0.1 Building basement-0.0.11 Completed base64-bytestring-1.2.0.1 Starting binary-orphans-1.0.1 Building binary-orphans-1.0.1 Completed base-compat-0.11.2 Starting blaze-builder-0.4.2.1 Completed binary-orphans-1.0.1 Starting bsb-http-chunked-0.0.0.4 Building blaze-builder-0.4.2.1 Building bsb-http-chunked-0.0.0.4 Completed base-orphans-0.8.4 Starting byteable-0.1.1 Building byteable-0.1.1 Completed bsb-http-chunked-0.0.0.4 Starting byteorder-1.0.4 Building byteorder-1.0.4 Completed byteable-0.1.1 Starting bytestring-builder-0.10.8.2.0 Building bytestring-builder-0.10.8.2.0 Completed bytestring-builder-0.10.8.2.0 Starting cabal-doctest-1.0.8 Completed byteorder-1.0.4 Starting call-stack-0.3.0 Building cabal-doctest-1.0.8 Completed blaze-builder-0.4.2.1 Starting cereal-0.5.8.1 Building call-stack-0.3.0 Building cereal-0.5.8.1 Completed call-stack-0.3.0 Starting clock-0.8.2 Building clock-0.8.2 Completed cabal-doctest-1.0.8 Starting colour-2.3.5 Building colour-2.3.5 Completed clock-0.8.2 Starting data-default-class-0.1.2.0 Building data-default-class-0.1.2.0 Completed data-default-class-0.1.2.0 Starting dlist-1.0 Building dlist-1.0 Completed cereal-0.5.8.1 Starting easy-file-0.2.2 Building easy-file-0.2.2 Completed colour-2.3.5 Starting fail-4.9.0.0 Completed easy-file-0.2.2 Starting focus-1.0.2 Completed dlist-1.0 Starting hashable-1.3.1.0 Building fail-4.9.0.0 Building focus-1.0.2 Building hashable-1.3.1.0 Completed fail-4.9.0.0 Starting hourglass-0.2.12 Building hourglass-0.2.12 Completed focus-1.0.2 Starting hspec-discover-2.7.8 Building hspec-discover-2.7.8 Completed hashable-1.3.1.0 Starting hsyslog-5.0.2 Building hsyslog-5.0.2 Completed hspec-discover-2.7.8 Starting indexed-traversable-0.1.1 Building indexed-traversable-0.1.1 Completed hsyslog-5.0.2 Starting integer-logarithms-1.0.3.1 Building integer-logarithms-1.0.3.1 Completed hourglass-0.2.12 Starting labels-0.3.3 Building labels-0.3.3 Completed integer-logarithms-1.0.3.1 Starting logict-0.7.0.3 Building logict-0.7.0.3 Completed indexed-traversable-0.1.1 Starting microlens-0.4.12.0 Building microlens-0.4.12.0 Completed logict-0.7.0.3 Starting monad-loops-0.4.3 Building monad-loops-0.4.3 Completed monad-loops-0.4.3 Starting nats-1.1.2 Completed microlens-0.4.12.0 Starting network-3.1.2.1 Building nats-1.1.2 Completed nats-1.1.2 Starting network-byte-order-0.1.6 Building network-byte-order-0.1.6 Building network-3.1.2.1 Completed network-byte-order-0.1.6 Starting old-locale-1.0.0.7 Building old-locale-1.0.0.7 Completed basement-0.0.11 Starting parser-combinators-1.3.0 Completed old-locale-1.0.0.7 Starting primitive-0.7.1.0 Building parser-combinators-1.3.0 Building primitive-0.7.1.0 Completed parser-combinators-1.3.0 Starting readable-0.3.1 Building readable-0.3.1 Completed readable-0.3.1 Starting regex-base-0.94.0.1 Building regex-base-0.94.0.1 Completed network-3.1.2.1 Starting safe-0.3.19 Building safe-0.3.19 Completed regex-base-0.94.0.1 Starting setenv-0.1.1.3 Building setenv-0.1.1.3 Completed labels-0.3.3 Starting split-0.2.3.4 Completed setenv-0.1.1.3 Starting splitmix-0.1.0.3 Building split-0.2.3.4 Building splitmix-0.1.0.3 Completed safe-0.3.19 Starting stm-chans-3.0.0.4 Completed split-0.2.3.4 Starting syb-0.7.2.1 Building syb-0.7.2.1 Completed splitmix-0.1.0.3 Starting tagged-0.8.6.1 Building tagged-0.8.6.1 Completed primitive-0.7.1.0 Starting th-abstraction-0.4.2.0 Building th-abstraction-0.4.2.0 Building stm-chans-3.0.0.4 Completed syb-0.7.2.1 Starting th-compat-0.1.1 Completed tagged-0.8.6.1 Starting thread-local-storage-0.2 Building th-compat-0.1.1 Building thread-local-storage-0.2 Completed stm-chans-3.0.0.4 Starting transformers-compat-0.6.6 Building transformers-compat-0.6.6 Completed th-abstraction-0.4.2.0 Starting unbounded-delays-0.1.1.1 Completed th-compat-0.1.1 Starting unix-bytestring-0.3.7.3 Completed thread-local-storage-0.2 Starting unix-compat-0.5.3 Building unbounded-delays-0.1.1.1 Building unix-bytestring-0.3.7.3 Building unix-compat-0.5.3 Completed unbounded-delays-0.1.1.1 Starting unix-memory-0.1.2 Completed transformers-compat-0.6.6 Starting unliftio-core-0.2.0.1 Building unix-memory-0.1.2 Building unliftio-core-0.2.0.1 Completed unix-compat-0.5.3 Starting void-0.7.3 Completed unix-bytestring-0.3.7.3 Starting word8-0.1.3 Building void-0.7.3 Building word8-0.1.3 Completed unix-memory-0.1.2 Starting zlib-0.6.2.3 Completed unliftio-core-0.2.0.1 Starting contravariant-1.5.3 Completed void-0.7.3 Starting time-manager-0.0.0 Building zlib-0.6.2.3 Building contravariant-1.5.3 Building time-manager-0.0.0 Completed word8-0.1.3 Starting base-compat-batteries-0.11.2 Building base-compat-batteries-0.11.2 Completed time-manager-0.0.0 Starting time-compat-1.9.5 Building time-compat-1.9.5 Completed contravariant-1.5.3 Starting HUnit-1.6.2.0 Building HUnit-1.6.2.0 Completed zlib-0.6.2.3 Starting data-default-instances-containers-0.0.1 Building data-default-instances-containers-0.0.1 Completed HUnit-1.6.2.0 Starting cookie-0.4.5 Completed time-compat-1.9.5 Starting ansi-terminal-0.11 Completed data-default-instances-containers-0.0.1 Starting data-default-instances-dlist-0.0.1 Building cookie-0.4.5 Building ansi-terminal-0.11 Completed base-compat-batteries-0.11.2 Starting unordered-containers-0.2.13.0 Building data-default-instances-dlist-0.0.1 Building unordered-containers-0.2.13.0 Completed data-default-instances-dlist-0.0.1 Starting text-short-0.1.3 Completed cookie-0.4.5 Starting psqueues-0.2.7.2 Building text-short-0.1.3 Building psqueues-0.2.7.2 Completed ansi-terminal-0.11 Starting data-fix-0.3.1 Building data-fix-0.3.1 Completed text-short-0.1.3 Starting case-insensitive-1.2.1.0 Completed data-fix-0.3.1 Starting async-2.2.3 Building case-insensitive-1.2.1.0 Building async-2.2.3 Completed psqueues-0.2.7.2 Starting smallcheck-1.2.1 Completed case-insensitive-1.2.1.0 Starting memory-0.15.0 Building smallcheck-1.2.1 Building memory-0.15.0 Completed async-2.2.3 Starting old-time-1.1.0.3 Completed unordered-containers-0.2.13.0 Starting data-default-instances-old-locale-0.0.1 Building old-time-1.1.0.3 Building data-default-instances-old-locale-0.0.1 Completed data-default-instances-old-locale-0.0.1 Starting simple-sendfile-0.2.30 Building simple-sendfile-0.2.30 Completed old-time-1.1.0.3 Starting iproute-1.7.10 Completed smallcheck-1.2.1 Starting regex-posix-0.96.0.0 Building iproute-1.7.10 Completed simple-sendfile-0.2.30 Starting random-1.2.0 Building regex-posix-0.96.0.0 Building random-1.2.0 Completed memory-0.15.0 Starting vector-0.12.2.0 Building vector-0.12.2.0 Completed regex-posix-0.96.0.0 Starting store-core-0.4.4.4 Completed iproute-1.7.10 Starting scientific-0.3.6.2 Building store-core-0.4.4.4 Building scientific-0.3.6.2 Completed random-1.2.0 Starting th-expand-syns-0.4.6.0 Building th-expand-syns-0.4.6.0 Completed store-core-0.4.4.4 Starting distributive-0.6.2.1 Building distributive-0.6.2.1 Completed th-expand-syns-0.4.6.0 Starting th-lift-0.8.2 Completed scientific-0.3.6.2 Starting network-uri-2.6.4.1 Building th-lift-0.8.2 Building network-uri-2.6.4.1 Completed distributive-0.6.2.1 Starting concurrent-extra-0.7.0.12 Building concurrent-extra-0.7.0.12 Completed th-lift-0.8.2 Starting transformers-base-0.4.5.2 Building transformers-base-0.4.5.2 Completed concurrent-extra-0.7.0.12 Starting mmorph-1.1.5 Building mmorph-1.1.5 Completed network-uri-2.6.4.1 Starting resourcet-1.2.4.2 Completed transformers-base-0.4.5.2 Starting zlib-bindings-0.1.1.5 Building resourcet-1.2.4.2 Building zlib-bindings-0.1.1.5 Completed mmorph-1.1.5 Starting hspec-expectations-0.8.2 Completed zlib-bindings-0.1.1.5 Starting ansi-wl-pprint-0.6.9 Building hspec-expectations-0.8.2 Building ansi-wl-pprint-0.6.9 Completed resourcet-1.2.4.2 Starting primitive-unlifted-0.1.3.0 Building primitive-unlifted-0.1.3.0 Completed hspec-expectations-0.8.2 Starting http-types-0.12.3 Building http-types-0.12.3 Completed ansi-wl-pprint-0.6.9 Starting typed-process-0.2.6.0 Building typed-process-0.2.6.0 Completed primitive-unlifted-0.1.3.0 Starting vault-0.3.1.5 Building vault-0.3.1.5 Completed http-types-0.12.3 Starting ekg-core-0.1.1.7 Building ekg-core-0.1.1.7 Completed vault-0.3.1.5 Starting data-default-0.7.1.1 Completed typed-process-0.2.6.0 Starting unix-time-0.4.7 Building data-default-0.7.1.1 Completed data-default-0.7.1.1 Starting pem-0.2.4 Building unix-time-0.4.7 Building pem-0.2.4 Completed ekg-core-0.1.1.7 Starting cryptonite-0.28 Building cryptonite-0.28 Completed pem-0.2.4 Starting asn1-types-0.3.4 Completed unix-time-0.4.7 Starting regex-compat-0.95.2.1 Building asn1-types-0.3.4 Building regex-compat-0.95.2.1 Completed regex-compat-0.95.2.1 Starting uuid-types-1.0.4 Building uuid-types-1.0.4 Completed asn1-types-0.3.4 Starting tf-random-0.5 Building tf-random-0.5 Completed uuid-types-1.0.4 Starting streaming-commons-0.2.2.1 Building streaming-commons-0.2.2.1 Completed tf-random-0.5 Starting QuickCheck-2.14.2 Building QuickCheck-2.14.2 Completed vector-0.12.2.0 Starting MonadRandom-0.5.2 Building MonadRandom-0.5.2 Completed MonadRandom-0.5.2 Starting th-reify-many-0.1.9 Completed streaming-commons-0.2.2.1 Starting megaparsec-9.0.1 Building th-reify-many-0.1.9 Building megaparsec-9.0.1 Completed th-reify-many-0.1.9 Starting bytes-0.17.1 Building bytes-0.17.1 Completed bytes-0.17.1 Starting attoparsec-0.13.2.5 Building attoparsec-0.13.2.5 Completed megaparsec-9.0.1 Starting comonad-5.0.8 Building comonad-5.0.8 Completed QuickCheck-2.14.2 Starting monad-control-1.0.2.3 Building monad-control-1.0.2.3 Completed monad-control-1.0.2.3 Starting optparse-applicative-0.16.1.0 Completed comonad-5.0.8 Building optparse-applicative-0.16.1.0 Starting http2-2.0.6 Building http2-2.0.6 Completed attoparsec-0.13.2.5 Starting wai-3.2.3 Building wai-3.2.3 Completed wai-3.2.3 Starting monad-metrics-0.2.2.0 Building monad-metrics-0.2.2.0 Completed optparse-applicative-0.16.1.0 Starting fast-logger-3.0.3 Building fast-logger-3.0.3 Completed monad-metrics-0.2.2.0 Starting asn1-encoding-0.9.6 Building asn1-encoding-0.9.6 Completed fast-logger-3.0.3 Starting vector-algorithms-0.8.0.4 Building vector-algorithms-0.8.0.4 Completed asn1-encoding-0.9.6 Starting th-lift-instances-0.1.18 Building th-lift-instances-0.1.18 Completed th-lift-instances-0.1.18 Starting math-functions-0.3.4.1 Building math-functions-0.3.4.1 Completed http2-2.0.6 Starting lrucaching-0.3.3 Building lrucaching-0.3.3 Completed lrucaching-0.3.3 Starting hashtables-1.2.4.1 Building hashtables-1.2.4.1 Completed vector-algorithms-0.8.0.4 Starting random-shuffle-0.0.4 Building random-shuffle-0.0.4 Completed random-shuffle-0.0.4 Starting bits-0.5.3 Building bits-0.5.3 Completed math-functions-0.3.4.1 Starting quickcheck-io-0.2.0 Building quickcheck-io-0.2.0 Completed quickcheck-io-0.2.0 Starting lifted-base-0.2.3.12 Building lifted-base-0.2.3.12 Completed bits-0.5.3 Starting bifunctors-5.5.10 Building bifunctors-5.5.10 Completed cryptonite-0.28 Starting io-streams-1.5.2.0 Completed lifted-base-0.2.3.12 Starting http-date-0.0.11 Completed hashtables-1.2.4.1 Starting wai-logger-2.3.6 Building io-streams-1.5.2.0 Building http-date-0.0.11 Building wai-logger-2.3.6 Completed http-date-0.0.11 Starting asn1-parse-0.9.5 Building asn1-parse-0.9.5 Completed wai-logger-2.3.6 Starting th-orphans-0.13.11 Completed asn1-parse-0.9.5 Starting text-format-heavy-0.1.5.3 Building th-orphans-0.13.11 Building text-format-heavy-0.1.5.3 Completed io-streams-1.5.2.0 Starting random-access-file-0.1.0.0 Building random-access-file-0.1.0.0 Completed bifunctors-5.5.10 Starting mono-traversable-1.0.15.1 Building mono-traversable-1.0.15.1 Completed text-format-heavy-0.1.5.3 Starting mwc-random-0.15.0.1 Building mwc-random-0.15.0.1 Completed random-access-file-0.1.0.0 Starting hspec-core-2.7.8 Building hspec-core-2.7.8 Completed th-orphans-0.13.11 Starting cryptohash-0.11.9 Building cryptohash-0.11.9 Completed mwc-random-0.15.0.1 Starting x509-1.7.5 Building x509-1.7.5 Completed cryptohash-0.11.9 Starting snap-core-1.0.4.2 Building snap-core-1.0.4.2 Completed hspec-core-2.7.8 Starting io-streams-haproxy-1.0.1.0 Building io-streams-haproxy-1.0.1.0 Completed mono-traversable-1.0.15.1 Starting semigroupoids-5.3.5 Completed io-streams-haproxy-1.0.1.0 Starting profunctors-5.6.2 Building semigroupoids-5.3.5 Completed x509-1.7.5 Starting assoc-1.0.2 Building profunctors-5.6.2 Building assoc-1.0.2 Completed assoc-1.0.2 Starting th-utilities-0.2.4.1 Building th-utilities-0.2.4.1 Completed snap-core-1.0.4.2 Starting hspec-smallcheck-0.5.2 Completed th-utilities-0.2.4.1 Starting hspec-2.7.8 Building hspec-smallcheck-0.5.2 Completed semigroupoids-5.3.5 Starting conduit-1.3.4.1 Building hspec-2.7.8 Completed profunctors-5.6.2 Starting warp-3.3.14 Building conduit-1.3.4.1 Building warp-3.3.14 Completed hspec-smallcheck-0.5.2 Starting these-1.1.1.1 Building these-1.1.1.1 Completed hspec-2.7.8 Starting snap-server-1.1.2.0 Building snap-server-1.1.2.0 Completed these-1.1.1.1 Starting free-5.1.6 Building free-5.1.6 Completed warp-3.3.14 Starting foldl-1.4.11 Building foldl-1.4.11 Completed snap-server-1.1.2.0 Starting strict-0.4.0.1 Building strict-0.4.0.1 Completed conduit-1.3.4.1 Starting libyaml-0.1.2 Building libyaml-0.1.2 Completed foldl-1.4.11 Starting conduit-extra-1.3.5 Completed strict-0.4.0.1 Starting list-t-1.0.4 Building conduit-extra-1.3.5 Building list-t-1.0.4 Completed free-5.1.6 Starting deferred-folds-0.9.17 Completed list-t-1.0.4 Starting aeson-1.5.6.0 Building deferred-folds-0.9.17 Building aeson-1.5.6.0 Completed libyaml-0.1.2 Starting store-0.7.9 Completed conduit-extra-1.3.5 Starting monad-logger-0.3.36 Building store-0.7.9 Building monad-logger-0.3.36 Completed deferred-folds-0.9.17 Starting primitive-extras-0.10.1 Building primitive-extras-0.10.1 Completed monad-logger-0.3.36 Starting heavy-logger-0.3.2.1 Building heavy-logger-0.3.2.1 Completed primitive-extras-0.10.1 Starting stm-hamt-1.2.0.6 Building stm-hamt-1.2.0.6 Completed heavy-logger-0.3.2.1 Completed stm-hamt-1.2.0.6 Starting stm-containers-1.2 Building stm-containers-1.2 Completed stm-containers-1.2 Completed aeson-1.5.6.0 Starting ekg-json-0.1.0.6 Starting yaml-0.11.5.0 Starting wai-extra-3.1.6 Building ekg-json-0.1.0.6 Building yaml-0.11.5.0 Building wai-extra-3.1.6 Completed ekg-json-0.1.0.6 Starting ekg-0.4.0.15 Building ekg-0.4.0.15 Completed yaml-0.11.5.0 Completed ekg-0.4.0.15 Completed store-0.7.9 Completed wai-extra-3.1.6 Starting scotty-0.12 Building scotty-0.12 Completed scotty-0.12 Starting hcheckers-0.1.0.1 Building hcheckers-0.1.0.1 Failed to install hcheckers-0.1.0.1 Build log ( /home/builder/.cabal/logs/ghc-8.10.2/hcheckers-0.1.0.1-2eI2SbnUevYFHmGUJhfsqJ.log ): cabal: Entering directory '/tmp/cabal-tmp-22499/hcheckers-0.1.0.1' Configuring hcheckers-0.1.0.1... Preprocessing executable 'hcheckersd' for hcheckers-0.1.0.1.. Building executable 'hcheckersd' for hcheckers-0.1.0.1.. [ 1 of 39] Compiling Core.CmdLine ( src/Core/CmdLine.hs, dist/build/hcheckersd/hcheckersd-tmp/Core/CmdLine.o, dist/build/hcheckersd/hcheckersd-tmp/Core/CmdLine.dyn_o ) src/Core/CmdLine.hs:5:1: warning: [-Wunused-imports] The import of ‘Data.Semigroup’ is redundant except perhaps to import instances from ‘Data.Semigroup’ To import instances alone, use: import Data.Semigroup() | 5 | import Data.Semigroup ((<>)) | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [ 2 of 39] Compiling Core.Logging ( src/Core/Logging.hs, dist/build/hcheckersd/hcheckersd-tmp/Core/Logging.o, dist/build/hcheckersd/hcheckersd-tmp/Core/Logging.dyn_o ) [ 3 of 39] Compiling Core.Types ( src/Core/Types.hs, dist/build/hcheckersd/hcheckersd-tmp/Core/Types.o, dist/build/hcheckersd/hcheckersd-tmp/Core/Types.dyn_o ) src/Core/Types.hs:20:1: warning: [-Wunused-imports] The import of ‘Control.Exception’ is redundant except perhaps to import instances from ‘Control.Exception’ To import instances alone, use: import Control.Exception() | 20 | import Control.Exception as E (try) | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [ 4 of 39] Compiling Core.Parallel ( src/Core/Parallel.hs, dist/build/hcheckersd/hcheckersd-tmp/Core/Parallel.o, dist/build/hcheckersd/hcheckersd-tmp/Core/Parallel.dyn_o ) [ 5 of 39] Compiling Core.Monitoring ( src/Core/Monitoring.hs, dist/build/hcheckersd/hcheckersd-tmp/Core/Monitoring.o, dist/build/hcheckersd/hcheckersd-tmp/Core/Monitoring.dyn_o ) [ 6 of 39] Compiling Core.BoardMap ( src/Core/BoardMap.hs, dist/build/hcheckersd/hcheckersd-tmp/Core/BoardMap.o, dist/build/hcheckersd/hcheckersd-tmp/Core/BoardMap.dyn_o ) [ 7 of 39] Compiling Core.Board ( src/Core/Board.hs, dist/build/hcheckersd/hcheckersd-tmp/Core/Board.o, dist/build/hcheckersd/hcheckersd-tmp/Core/Board.dyn_o ) [ 8 of 39] Compiling Core.Game ( src/Core/Game.hs, dist/build/hcheckersd/hcheckersd-tmp/Core/Game.o, dist/build/hcheckersd/hcheckersd-tmp/Core/Game.dyn_o ) [ 9 of 39] Compiling Core.Evaluator ( src/Core/Evaluator.hs, dist/build/hcheckersd/hcheckersd-tmp/Core/Evaluator.o, dist/build/hcheckersd/hcheckersd-tmp/Core/Evaluator.dyn_o ) [10 of 39] Compiling AI.AlphaBeta.Types ( src/AI/AlphaBeta/Types.hs, dist/build/hcheckersd/hcheckersd-tmp/AI/AlphaBeta/Types.o, dist/build/hcheckersd/hcheckersd-tmp/AI/AlphaBeta/Types.dyn_o ) [11 of 39] Compiling AI.AlphaBeta.Persistent ( src/AI/AlphaBeta/Persistent.hs, dist/build/hcheckersd/hcheckersd-tmp/AI/AlphaBeta/Persistent.o, dist/build/hcheckersd/hcheckersd-tmp/AI/AlphaBeta/Persistent.dyn_o ) [12 of 39] Compiling AI.AlphaBeta.Cache ( src/AI/AlphaBeta/Cache.hs, dist/build/hcheckersd/hcheckersd-tmp/AI/AlphaBeta/Cache.o, dist/build/hcheckersd/hcheckersd-tmp/AI/AlphaBeta/Cache.dyn_o ) src/AI/AlphaBeta/Cache.hs:22:1: warning: [-Wunused-imports] The import of ‘Control.Exception’ is redundant except perhaps to import instances from ‘Control.Exception’ To import instances alone, use: import Control.Exception() | 22 | import Control.Exception (SomeException) | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [13 of 39] Compiling AI.AlphaBeta ( src/AI/AlphaBeta.hs, dist/build/hcheckersd/hcheckersd-tmp/AI/AlphaBeta.o, dist/build/hcheckersd/hcheckersd-tmp/AI/AlphaBeta.dyn_o ) [14 of 39] Compiling Formats.Types ( src/Formats/Types.hs, dist/build/hcheckersd/hcheckersd-tmp/Formats/Types.o, dist/build/hcheckersd/hcheckersd-tmp/Formats/Types.dyn_o ) src/Formats/Types.hs:14:1: warning: [-Wunused-imports] The import of ‘Data.Aeson’ is redundant except perhaps to import instances from ‘Data.Aeson’ To import instances alone, use: import Data.Aeson() | 14 | import Data.Aeson | ^^^^^^^^^^^^^^^^^ [15 of 39] Compiling Formats.Fen ( src/Formats/Fen.hs, dist/build/hcheckersd/hcheckersd-tmp/Formats/Fen.o, dist/build/hcheckersd/hcheckersd-tmp/Formats/Fen.dyn_o ) src/Formats/Fen.hs:9:1: warning: [-Wunused-imports] The import of ‘Data.Monoid’ is redundant except perhaps to import instances from ‘Data.Monoid’ To import instances alone, use: import Data.Monoid() | 9 | import Data.Monoid ((<>)) | ^^^^^^^^^^^^^^^^^^^^^^^^^ src/Formats/Fen.hs:12:1: warning: [-Wunused-imports] The import of ‘Text.Megaparsec.Error’ is redundant except perhaps to import instances from ‘Text.Megaparsec.Error’ To import instances alone, use: import Text.Megaparsec.Error() | 12 | import Text.Megaparsec.Error (errorBundlePretty) | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [16 of 39] Compiling Paths_hcheckers ( dist/build/hcheckersd/autogen/Paths_hcheckers.hs, dist/build/hcheckersd/hcheckersd-tmp/Paths_hcheckers.o, dist/build/hcheckersd/hcheckersd-tmp/Paths_hcheckers.dyn_o ) [17 of 39] Compiling Rules.Generic ( src/Rules/Generic.hs, dist/build/hcheckersd/hcheckersd-tmp/Rules/Generic.o, dist/build/hcheckersd/hcheckersd-tmp/Rules/Generic.dyn_o ) [18 of 39] Compiling Rules.Armenian ( src/Rules/Armenian.hs, dist/build/hcheckersd/hcheckersd-tmp/Rules/Armenian.o, dist/build/hcheckersd/hcheckersd-tmp/Rules/Armenian.dyn_o ) [19 of 39] Compiling Rules.International ( src/Rules/International.hs, dist/build/hcheckersd/hcheckersd-tmp/Rules/International.o, dist/build/hcheckersd/hcheckersd-tmp/Rules/International.dyn_o ) [20 of 39] Compiling Rules.Canadian ( src/Rules/Canadian.hs, dist/build/hcheckersd/hcheckersd-tmp/Rules/Canadian.o, dist/build/hcheckersd/hcheckersd-tmp/Rules/Canadian.dyn_o ) [21 of 39] Compiling Rules.Russian ( src/Rules/Russian.hs, dist/build/hcheckersd/hcheckersd-tmp/Rules/Russian.o, dist/build/hcheckersd/hcheckersd-tmp/Rules/Russian.dyn_o ) [22 of 39] Compiling Rules.English ( src/Rules/English.hs, dist/build/hcheckersd/hcheckersd-tmp/Rules/English.o, dist/build/hcheckersd/hcheckersd-tmp/Rules/English.dyn_o ) [23 of 39] Compiling Rules.Diagonal ( src/Rules/Diagonal.hs, dist/build/hcheckersd/hcheckersd-tmp/Rules/Diagonal.o, dist/build/hcheckersd/hcheckersd-tmp/Rules/Diagonal.dyn_o ) [24 of 39] Compiling Rules.Czech ( src/Rules/Czech.hs, dist/build/hcheckersd/hcheckersd-tmp/Rules/Czech.o, dist/build/hcheckersd/hcheckersd-tmp/Rules/Czech.dyn_o ) [25 of 39] Compiling Rules.Brazilian ( src/Rules/Brazilian.hs, dist/build/hcheckersd/hcheckersd-tmp/Rules/Brazilian.o, dist/build/hcheckersd/hcheckersd-tmp/Rules/Brazilian.dyn_o ) [26 of 39] Compiling Rules.Simple ( src/Rules/Simple.hs, dist/build/hcheckersd/hcheckersd-tmp/Rules/Simple.o, dist/build/hcheckersd/hcheckersd-tmp/Rules/Simple.dyn_o ) [27 of 39] Compiling Rules.Spancirety ( src/Rules/Spancirety.hs, dist/build/hcheckersd/hcheckersd-tmp/Rules/Spancirety.o, dist/build/hcheckersd/hcheckersd-tmp/Rules/Spancirety.dyn_o ) [28 of 39] Compiling Formats.Pdn ( src/Formats/Pdn.hs, dist/build/hcheckersd/hcheckersd-tmp/Formats/Pdn.o, dist/build/hcheckersd/hcheckersd-tmp/Formats/Pdn.dyn_o ) src/Formats/Pdn.hs:17:1: warning: [-Wunused-imports] The import of ‘Text.Megaparsec.Error’ is redundant except perhaps to import instances from ‘Text.Megaparsec.Error’ To import instances alone, use: import Text.Megaparsec.Error() | 17 | import Text.Megaparsec.Error (errorBundlePretty) | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [29 of 39] Compiling Learn ( src/Learn.hs, dist/build/hcheckersd/hcheckersd-tmp/Learn.o, dist/build/hcheckersd/hcheckersd-tmp/Learn.dyn_o ) [30 of 39] Compiling Formats.Compact ( src/Formats/Compact.hs, dist/build/hcheckersd/hcheckersd-tmp/Formats/Compact.o, dist/build/hcheckersd/hcheckersd-tmp/Formats/Compact.dyn_o ) src/Formats/Compact.hs:15:1: warning: [-Wunused-imports] The import of ‘Text.Megaparsec.Error’ is redundant except perhaps to import instances from ‘Text.Megaparsec.Error’ To import instances alone, use: import Text.Megaparsec.Error() | 15 | import Text.Megaparsec.Error (errorBundlePretty) | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [31 of 39] Compiling Rules.Turkish ( src/Rules/Turkish.hs, dist/build/hcheckersd/hcheckersd-tmp/Rules/Turkish.o, dist/build/hcheckersd/hcheckersd-tmp/Rules/Turkish.dyn_o ) [32 of 39] Compiling Core.Supervisor ( src/Core/Supervisor.hs, dist/build/hcheckersd/hcheckersd-tmp/Core/Supervisor.o, dist/build/hcheckersd/hcheckersd-tmp/Core/Supervisor.dyn_o ) src/Core/Supervisor.hs:111:9: error: Ambiguous occurrence ‘uniform’ It could refer to either ‘System.Random.uniform’, imported from ‘System.Random’ at src/Core/Supervisor.hs:29:1-20 or ‘System.Random.MWC.uniform’, imported from ‘System.Random.MWC’ at src/Core/Supervisor.hs:34:1-24 | 111 | uniform gen | ^^^^^^^ cabal: Leaving directory '/tmp/cabal-tmp-22499/hcheckers-0.1.0.1' cabal: Error: some packages failed to install: hcheckers-0.1.0.1-2eI2SbnUevYFHmGUJhfsqJ failed during the building phase. The exception was: ExitFailure 1