Resolving dependencies...
Configuring base64-bytestring-1.0.0.1...
Configuring SHA-1.6.4.2...
Building base64-bytestring-1.0.0.1...
Building SHA-1.6.4.2...
Installed base64-bytestring-1.0.0.1
Configuring entropy-0.3.7...
Building entropy-0.3.7...
Installed entropy-0.3.7
Configuring mtl-2.2.1...
Building mtl-2.2.1...
Configuring network-info-0.2.0.8...
Installed SHA-1.6.4.2
Building network-info-0.2.0.8...
Configuring network-2.6.3.1...
Installed network-info-0.2.0.8
Configuring old-locale-1.0.0.7...
Installed mtl-2.2.1
Building old-locale-1.0.0.7...
Configuring random-1.1...
Installed old-locale-1.0.0.7
Building network-2.6.3.1...
Building random-1.1...
Configuring primitive-0.6.1.0...
Installed random-1.1
Building primitive-0.6.1.0...
Configuring stm-2.4.4.1...
Installed network-2.6.3.1
Building stm-2.4.4.1...
Configuring stringsearch-0.3.6.6...
Installed primitive-0.6.1.0
Building stringsearch-0.3.6.6...
Configuring text-1.2.2.1...
Installed stm-2.4.4.1
Building text-1.2.2.1...
Installed stringsearch-0.3.6.6
Configuring old-time-1.1.0.3...
Building old-time-1.1.0.3...
Configuring transient-0.4.4.1...
Installed old-time-1.1.0.3
Building transient-0.4.4.1...
Configuring vector-0.11.0.0...
Installed transient-0.4.4.1
Building vector-0.11.0.0...
Installed text-1.2.2.1
Configuring hashable-1.2.4.0...
Building hashable-1.2.4.0...
Configuring blaze-builder-0.4.0.2...
Installed hashable-1.2.4.0
Building blaze-builder-0.4.0.2...
Configuring parsec-3.1.11...
Installed blaze-builder-0.4.0.2
Building parsec-3.1.11...
Installed parsec-3.1.11
Configuring network-uri-2.6.1.0...
Building network-uri-2.6.1.0...
Configuring case-insensitive-1.2.0.7...
Installed network-uri-2.6.1.0
Building case-insensitive-1.2.0.7...
Installed case-insensitive-1.2.0.7
Configuring HTTP-4000.3.3...
Building HTTP-4000.3.3...
Installed vector-0.11.0.0
Configuring hashtables-1.2.1.0...
Building hashtables-1.2.1.0...
Configuring scientific-0.3.4.9...
Installed hashtables-1.2.1.0
Building scientific-0.3.4.9...
Configuring RefSerialize-0.3.1.4...
Installed HTTP-4000.3.3
Building RefSerialize-0.3.1.4...
Installed scientific-0.3.4.9
Configuring attoparsec-0.13.1.0...
Building attoparsec-0.13.1.0...
Installed RefSerialize-0.3.1.4
Configuring TCache-0.12.0...
Building TCache-0.12.0...
Installed TCache-0.12.0
Installed attoparsec-0.13.1.0
Configuring websockets-0.9.7.0...
Building websockets-0.9.7.0...
Installed websockets-0.9.7.0
Downloading transient-universe-0.3...
Configuring transient-universe-0.3...
Building transient-universe-0.3...
Failed to install transient-universe-0.3
Build log ( /home/builder/.cabal/logs/transient-universe-0.3.log ):
cabal: Entering directory '/tmp/cabal-tmp-19149/transient-universe-0.3'
Configuring transient-universe-0.3...
Building transient-universe-0.3...
Preprocessing library transient-universe-0.3...
[1 of 4] Compiling Transient.Move   ( src/Transient/Move.hs, dist/build/Transient/Move.o )

src/Transient/Move.hs:873:10: error:
    Duplicate instance declarations:
      instance Read PortNumber -- Defined at src/Transient/Move.hs:873:10
      instance Read PortNumber
        -- Defined in ‘network-2.6.3.1:Network.Socket.Types’
cabal: Leaving directory '/tmp/cabal-tmp-19149/transient-universe-0.3'
cabal: Error: some packages failed to install:
transient-universe-0.3 failed during the building phase. The exception was:
ExitFailure 1