Resolving dependencies... Configuring ansi-terminal-0.6.3.1... Configuring cabal-doctest-1.0.2... Building cabal-doctest-1.0.2... Building ansi-terminal-0.6.3.1... Configuring base-orphans-0.6... Installed cabal-doctest-1.0.2 Building base-orphans-0.6... Installed ansi-terminal-0.6.3.1 Configuring call-stack-0.1.0... Building call-stack-0.1.0... Configuring fail-4.9.0.0... Installed call-stack-0.1.0 Configuring mtl-2.2.1... Installed base-orphans-0.6 Building fail-4.9.0.0... Building mtl-2.2.1... Configuring parallel-3.2.1.1... Installed fail-4.9.0.0 Building parallel-3.2.1.1... Configuring prelude-extras-0.4.0.3... Installed parallel-3.2.1.1 Building prelude-extras-0.4.0.3... Configuring primitive-0.6.2.0... Installed mtl-2.2.1 Building primitive-0.6.2.0... Configuring reflection-2.1.2... Installed prelude-extras-0.4.0.3 Building reflection-2.1.2... Configuring semigroups-0.18.3... Installed primitive-0.6.2.0 Building semigroups-0.18.3... Configuring stm-2.4.4.1... Installed reflection-2.1.2 Configuring text-1.2.2.2... Installed semigroups-0.18.3 Building stm-2.4.4.1... Building text-1.2.2.2... Configuring th-abstraction-0.2.4.0... Installed stm-2.4.4.1 Building th-abstraction-0.2.4.0... Configuring transformers-compat-0.5.1.4... Installed th-abstraction-0.2.4.0 Building transformers-compat-0.5.1.4... Configuring unix-compat-0.4.3.1... Installed transformers-compat-0.5.1.4 Building unix-compat-0.4.3.1... Configuring void-0.7.2... Installed unix-compat-0.4.3.1 Building void-0.7.2... Installed void-0.7.2 Configuring StateVar-1.1.0.4... Building StateVar-1.1.0.4... Configuring vector-0.12.0.1... Installed StateVar-1.1.0.4 Building vector-0.12.0.1... Configuring exceptions-0.8.3... Installed text-1.2.2.2 Building exceptions-0.8.3... Configuring transformers-base-0.4.4... Installed exceptions-0.8.3 Building transformers-base-0.4.4... Configuring tagged-0.8.5... Installed transformers-base-0.4.4 Building tagged-0.8.5... Installed tagged-0.8.5 Configuring contravariant-1.4... Building contravariant-1.4... Configuring hashable-1.2.6.1... Installed contravariant-1.4 Building hashable-1.2.6.1... Configuring distributive-0.5.3... Installed hashable-1.2.6.1 Building distributive-0.5.3... Warning: /tmp/pkgConf-distributive-0.51376710097927612902.3: Unrecognized field dynamic-library-dirs on line 22 Installed distributive-0.5.3 Configuring unordered-containers-0.2.8.0... Configuring comonad-5.0.2... Installed vector-0.12.0.1 Building unordered-containers-0.2.8.0... Building comonad-5.0.2... Warning: /tmp/pkgConf-comonad-5.03642284441947346619.2: Unrecognized field dynamic-library-dirs on line 29 Installed comonad-5.0.2 Configuring vector-th-unbox-0.2.1.6... Building vector-th-unbox-0.2.1.6... Configuring vector-algorithms-0.7.0.1... Installed unordered-containers-0.2.8.0 Building vector-algorithms-0.7.0.1... Configuring bifunctors-5.4.2... Installed vector-th-unbox-0.2.1.6 Building bifunctors-5.4.2... Installed vector-algorithms-0.7.0.1 Configuring math-functions-0.2.1.0... Building math-functions-0.2.1.0... Installed bifunctors-5.4.2 Configuring semigroupoids-5.2.1... Building semigroupoids-5.2.1... Configuring profunctors-5.2.1... Installed math-functions-0.2.1.0 Building profunctors-5.2.1... Warning: /tmp/pkgConf-semigroupoids-5.217132582701573363368.1: Unrecognized field dynamic-library-dirs on line 60 Configuring mwc-random-0.13.6.0... Installed semigroupoids-5.2.1 Building mwc-random-0.13.6.0... Installed mwc-random-0.13.6.0 Installed profunctors-5.2.1 Configuring free-4.12.4... Building free-4.12.4... Installed free-4.12.4 Configuring adjunctions-4.3... Building adjunctions-4.3... Installed adjunctions-4.3 Configuring kan-extensions-5.0.2... Building kan-extensions-5.0.2... Installed kan-extensions-5.0.2 Configuring lens-4.15.4... Building lens-4.15.4... Warning: /tmp/pkgConf-lens-4.1589369871982275856.4: Unrecognized field dynamic-library-dirs on line 122 Installed lens-4.15.4 Configuring metrics-0.4.1.0... Building metrics-0.4.1.0... Failed to install metrics-0.4.1.0 Build log ( /home/builder/.cabal/logs/metrics-0.4.1.0.log ): cabal: Entering directory '/tmp/cabal-tmp-14895/metrics-0.4.1.0' Configuring metrics-0.4.1.0... Building metrics-0.4.1.0... Preprocessing library metrics-0.4.1.0... [ 1 of 20] Compiling Data.Metrics.Snapshot ( src/Data/Metrics/Snapshot.hs, dist/build/Data/Metrics/Snapshot.o ) [ 2 of 20] Compiling Data.Metrics.Reservoir ( src/Data/Metrics/Reservoir.hs, dist/build/Data/Metrics/Reservoir.o ) [ 3 of 20] Compiling Data.Metrics.MovingAverage ( src/Data/Metrics/MovingAverage.hs, dist/build/Data/Metrics/MovingAverage.o ) [ 4 of 20] Compiling Data.Metrics.Meter.Internal ( src/Data/Metrics/Meter/Internal.hs, dist/build/Data/Metrics/Meter/Internal.o ) [ 5 of 20] Compiling Data.Metrics.Internal ( src/Data/Metrics/Internal.hs, dist/build/Data/Metrics/Internal.o ) [ 6 of 20] Compiling Data.Metrics.Reservoir.ExponentiallyDecaying ( src/Data/Metrics/Reservoir/ExponentiallyDecaying.hs, dist/build/Data/Metrics/Reservoir/ExponentiallyDecaying.o ) [ 7 of 20] Compiling Data.Metrics.Reservoir.Uniform ( src/Data/Metrics/Reservoir/Uniform.hs, dist/build/Data/Metrics/Reservoir/Uniform.o ) src/Data/Metrics/Reservoir/Uniform.hs:46:1: error: • Illegal instance declaration for ‘HasInnerReservoir UniformReservoir a_apRE’ The coverage condition fails in class ‘HasInnerReservoir’ for functional dependency: ‘s -> a’ Reason: lhs type ‘UniformReservoir’ does not determine rhs type ‘a_apRE’ Un-determined variable: a_apRE Using UndecidableInstances might help • In the instance declaration for ‘HasInnerReservoir UniformReservoir a_apRE’ cabal: Leaving directory '/tmp/cabal-tmp-14895/metrics-0.4.1.0' cabal: Error: some packages failed to install: metrics-0.4.1.0 failed during the building phase. The exception was: ExitFailure 1