Resolving dependencies... Configuring base-noprelude-4.11.1.0... Configuring co-log-core-0.1.0... Building base-noprelude-4.11.1.0... Building co-log-core-0.1.0... Installed base-noprelude-4.11.1.0 Configuring colour-2.3.4... Building colour-2.3.4... Installed co-log-core-0.1.0 Configuring hashable-1.2.7.0... Building hashable-1.2.7.0... Installed hashable-1.2.7.0 Configuring primitive-0.6.4.0... Building primitive-0.6.4.0... Installed colour-2.3.4 Configuring stm-2.5.0.0... Building stm-2.5.0.0... Installed stm-2.5.0.0 Configuring time-1.9.2... Building time-1.9.2... Installed primitive-0.6.4.0 Configuring utf8-string-1.0.1.1... Building utf8-string-1.0.1.1... Installed time-1.9.2 Configuring unordered-containers-0.2.9.0... Installed utf8-string-1.0.1.1 Configuring ansi-terminal-0.8.1... Building unordered-containers-0.2.9.0... Building ansi-terminal-0.8.1... Installed ansi-terminal-0.8.1 Configuring StateVar-1.1.1.1... Building StateVar-1.1.1.1... Installed StateVar-1.1.1.1 Configuring vector-0.12.0.1... Building vector-0.12.0.1... Installed unordered-containers-0.2.9.0 Configuring contravariant-1.5... Building contravariant-1.5... Installed contravariant-1.5 Configuring relude-0.3.0... Building relude-0.3.0... Installed relude-0.3.0 Installed vector-0.12.0.1 Configuring typerep-map-0.3.0... Building typerep-map-0.3.0... Installed typerep-map-0.3.0 Downloading co-log-0.1.0... Configuring co-log-0.1.0... Building co-log-0.1.0... Failed to install co-log-0.1.0 Build log ( /home/builder/.cabal/logs/ghc-8.4.3/co-log-0.1.0-GpEe9YLKpId4G8eWHZAcF5.log ): cabal: Entering directory '/tmp/cabal-tmp-3881/co-log-0.1.0' Configuring co-log-0.1.0... Preprocessing library for co-log-0.1.0.. Building library for co-log-0.1.0.. [1 of 7] Compiling Prelude [2 of 7] Compiling Colog.Pure [3 of 7] Compiling Colog.Monad [4 of 7] Compiling Colog.Message [5 of 7] Compiling Colog.Contra [6 of 7] Compiling Colog.Actions [7 of 7] Compiling Colog ignoring (possibly broken) abi-depends field for packages Preprocessing executable 'play-colog' for co-log-0.1.0.. Building executable 'play-colog' for co-log-0.1.0.. [1 of 1] Compiling Main Linking dist/build/play-colog/play-colog ... Preprocessing executable 'readme' for co-log-0.1.0.. Building executable 'readme' for co-log-0.1.0.. ghc: could not execute: markdown-unlit cabal: Leaving directory '/tmp/cabal-tmp-3881/co-log-0.1.0' cabal: Error: some packages failed to install: co-log-0.1.0-GpEe9YLKpId4G8eWHZAcF5 failed during the building phase. The exception was: ExitFailure 1