Warning: The install command is a part of the legacy v1 style of cabal usage. Please switch to using either the new project style and the new-install command or the legacy v1-install alias as new-style projects will become the default in the next version of cabal-install. Please file a bug if you cannot replicate a working v1- use case with the new-style commands. For more information, see: https://wiki.haskell.org/Cabal/NewBuild Resolving dependencies... Starting base64-bytestring-1.0.0.3 Starting call-stack-0.2.0 Starting base-orphans-0.8.2 Starting base-compat-0.11.1 Building call-stack-0.2.0 Building base-orphans-0.8.2 Building base64-bytestring-1.0.0.3 Building base-compat-0.11.1 Completed call-stack-0.2.0 Starting clock-0.8 Building clock-0.8 Completed base64-bytestring-1.0.0.3 Starting colour-2.3.5 Building colour-2.3.5 Completed clock-0.8 Starting dlist-0.8.0.7 Completed base-orphans-0.8.2 Starting exceptions-0.10.4 Building dlist-0.8.0.7 Building exceptions-0.10.4 Completed dlist-0.8.0.7 Starting hashable-1.3.0.0 Building hashable-1.3.0.0 Completed base-compat-0.11.1 Starting integer-logarithms-1.0.3 Building integer-logarithms-1.0.3 Completed exceptions-0.10.4 Starting microlens-0.4.11.2 Building microlens-0.4.11.2 Completed colour-2.3.5 Starting monad-loops-0.4.3 Completed integer-logarithms-1.0.3 Starting o-clock-1.1.0 Building monad-loops-0.4.3 Building o-clock-1.1.0 Completed hashable-1.3.0.0 Starting old-locale-1.0.0.7 Building old-locale-1.0.0.7 Completed monad-loops-0.4.3 Starting primitive-0.7.0.1 Completed microlens-0.4.11.2 Starting random-1.1 Building primitive-0.7.0.1 Completed old-locale-1.0.0.7 Starting semigroups-0.19.1 Building random-1.1 Building semigroups-0.19.1 Completed semigroups-0.19.1 Starting split-0.2.3.4 Building split-0.2.3.4 Completed random-1.1 Starting tagged-0.8.6 Building tagged-0.8.6 Completed o-clock-1.1.0 Starting th-abstraction-0.3.2.0 Completed split-0.2.3.4 Starting time-locale-compat-0.1.1.5 Building th-abstraction-0.3.2.0 Building time-locale-compat-0.1.1.5 Completed time-locale-compat-0.1.1.5 Starting transformers-compat-0.6.5 Building transformers-compat-0.6.5 Completed tagged-0.8.6 Starting type-equality-1 Building type-equality-1 Completed type-equality-1 Starting unliftio-core-0.2.0.1 Building unliftio-core-0.2.0.1 Completed th-abstraction-0.3.2.0 Starting utf8-string-1.0.1.1 Completed transformers-compat-0.6.5 Starting time-compat-1.9.2.2 Building utf8-string-1.0.1.1 Building time-compat-1.9.2.2 Completed unliftio-core-0.2.0.1 Downloading markdown-unlit-0.5.0 Downloaded markdown-unlit-0.5.0 Starting markdown-unlit-0.5.0 Building markdown-unlit-0.5.0 Completed primitive-0.7.0.1 Starting safe-exceptions-0.1.7.0 Building safe-exceptions-0.1.7.0 Completed markdown-unlit-0.5.0 Starting ansi-terminal-0.10.3 Completed utf8-string-1.0.1.1 Starting unordered-containers-0.2.10.0 Building ansi-terminal-0.10.3 Completed time-compat-1.9.2.2 Starting async-2.2.2 Building unordered-containers-0.2.10.0 Completed safe-exceptions-0.1.7.0 Starting microlens-ghc-0.4.12 Building async-2.2.2 Building microlens-ghc-0.4.12 Completed async-2.2.2 Starting uuid-types-1.0.3 Completed microlens-ghc-0.4.12 Starting microlens-th-0.4.3.4 Completed ansi-terminal-0.10.3 Starting transformers-base-0.4.5.2 Building uuid-types-1.0.3 Building microlens-th-0.4.3.4 Building transformers-base-0.4.5.2 Completed transformers-base-0.4.5.2 Starting mmorph-1.1.3 Building mmorph-1.1.3 Completed uuid-types-1.0.3 Starting microlens-mtl-0.2.0.1 Building microlens-mtl-0.2.0.1 Completed microlens-th-0.4.3.4 Starting constraints-0.12 Building constraints-0.12 Completed mmorph-1.1.3 Starting vector-0.12.1.2 Completed unordered-containers-0.2.10.0 Starting scientific-0.3.6.2 Building vector-0.12.1.2 Building scientific-0.3.6.2 Completed microlens-mtl-0.2.0.1 Starting resourcet-1.2.3 Building resourcet-1.2.3 Completed scientific-0.3.6.2 Starting monad-control-1.0.2.3 Completed resourcet-1.2.3 Starting formatting-6.3.7 Building monad-control-1.0.2.3 Building formatting-6.3.7 Completed constraints-0.12 Starting attoparsec-0.13.2.3 Building attoparsec-0.13.2.3 Completed monad-control-1.0.2.3 Starting lifted-base-0.2.3.12 Building lifted-base-0.2.3.12 Completed formatting-6.3.7 Starting fmt-0.6.1.2 Completed lifted-base-0.2.3.12 Starting lifted-async-0.10.0.5 Building fmt-0.6.1.2 Building lifted-async-0.10.0.5 Completed lifted-async-0.10.0.5 Completed attoparsec-0.13.2.3 Completed fmt-0.6.1.2 Completed vector-0.12.1.2 Starting microlens-platform-0.4.1 Starting vector-algorithms-0.8.0.3 Starting universum-1.6.1 Starting aeson-1.4.6.0 Building vector-algorithms-0.8.0.3 Building microlens-platform-0.4.1 Building universum-1.6.1 Building aeson-1.4.6.0 Completed microlens-platform-0.4.1 Completed vector-algorithms-0.8.0.3 Starting mono-traversable-1.0.15.1 Building mono-traversable-1.0.15.1 Completed universum-1.6.1 Completed aeson-1.4.6.0 Completed mono-traversable-1.0.15.1 Starting conduit-1.3.1.2 Building conduit-1.3.1.2 Completed conduit-1.3.1.2 Starting libyaml-0.1.2 Building libyaml-0.1.2 Completed libyaml-0.1.2 Starting yaml-0.11.2.0 Building yaml-0.11.2.0 Completed yaml-0.11.2.0 Downloading log-warper-1.9.0 Downloaded log-warper-1.9.0 Starting log-warper-1.9.0 Building log-warper-1.9.0 Failed to install log-warper-1.9.0 Build log ( /home/builder/.cabal/logs/ghc-8.6.3/log-warper-1.9.0-BcP8iiwzwkw7f22YOoi1Hd.log ): cabal: Entering directory '/tmp/cabal-tmp-12969/log-warper-1.9.0' Configuring log-warper-1.9.0... Preprocessing library for log-warper-1.9.0.. Building library for log-warper-1.9.0.. [ 1 of 20] Compiling System.Wlog.FileUtils ( src/System/Wlog/FileUtils.hs, dist/build/System/Wlog/FileUtils.o ) [ 2 of 20] Compiling System.Wlog.LoggerName ( src/System/Wlog/LoggerName.hs, dist/build/System/Wlog/LoggerName.o ) [ 3 of 20] Compiling System.Wlog.HasLoggerName ( src/System/Wlog/HasLoggerName.hs, dist/build/System/Wlog/HasLoggerName.o ) [ 4 of 20] Compiling System.Wlog.LoggerNameBox ( src/System/Wlog/LoggerNameBox.hs, dist/build/System/Wlog/LoggerNameBox.o ) [ 5 of 20] Compiling System.Wlog.MemoryQueue ( src/System/Wlog/MemoryQueue.hs, dist/build/System/Wlog/MemoryQueue.o ) [ 6 of 20] Compiling System.Wlog.Severity ( src/System/Wlog/Severity.hs, dist/build/System/Wlog/Severity.o ) [ 7 of 20] Compiling System.Wlog.Color ( src/System/Wlog/Color.hs, dist/build/System/Wlog/Color.o ) [ 8 of 20] Compiling System.Wlog.Formatter ( src/System/Wlog/Formatter.hs, dist/build/System/Wlog/Formatter.o ) [ 9 of 20] Compiling System.Wlog.LogHandler ( src/System/Wlog/LogHandler.hs, dist/build/System/Wlog/LogHandler.o ) [10 of 20] Compiling System.Wlog.LogHandler.Simple ( src/System/Wlog/LogHandler/Simple.hs, dist/build/System/Wlog/LogHandler/Simple.o ) [11 of 20] Compiling System.Wlog.LoggerConfig ( src/System/Wlog/LoggerConfig.hs, dist/build/System/Wlog/LoggerConfig.o ) [12 of 20] Compiling System.Wlog.LogHandler.Roller ( src/System/Wlog/LogHandler/Roller.hs, dist/build/System/Wlog/LogHandler/Roller.o ) [13 of 20] Compiling System.Wlog.IOLogger ( src/System/Wlog/IOLogger.hs, dist/build/System/Wlog/IOLogger.o ) [14 of 20] Compiling System.Wlog.CanLog ( src/System/Wlog/CanLog.hs, dist/build/System/Wlog/CanLog.o ) [15 of 20] Compiling System.Wlog.PureLogging ( src/System/Wlog/PureLogging.hs, dist/build/System/Wlog/PureLogging.o ) [16 of 20] Compiling System.Wlog.Exception ( src/System/Wlog/Exception.hs, dist/build/System/Wlog/Exception.o ) [17 of 20] Compiling System.Wlog.Concurrent ( src/System/Wlog/Concurrent.hs, dist/build/System/Wlog/Concurrent.o ) [18 of 20] Compiling System.Wlog.Terminal ( src/System/Wlog/Terminal.hs, dist/build/System/Wlog/Terminal.o ) [19 of 20] Compiling System.Wlog.Launcher ( src/System/Wlog/Launcher.hs, dist/build/System/Wlog/Launcher.o ) [20 of 20] Compiling System.Wlog ( src/System/Wlog.hs, dist/build/System/Wlog.o ) Preprocessing executable 'how-to' for log-warper-1.9.0.. Building executable 'how-to' for log-warper-1.9.0.. ghc: could not execute: markdown-unlit cabal: Leaving directory '/tmp/cabal-tmp-12969/log-warper-1.9.0' cabal: Error: some packages failed to install: log-warper-1.9.0-BcP8iiwzwkw7f22YOoi1Hd failed during the building phase. The exception was: ExitFailure 1