Resolving dependencies...
Configuring ansi-terminal-0.6.2.3...
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Installed base-compat-0.9.1
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Building base16-bytestring-0.1.1.6...
Configuring base64-bytestring-1.0.0.1...
Installed base-orphans-0.5.4
Building base64-bytestring-1.0.0.1...
Configuring byteable-0.1.1...
Installed base16-bytestring-0.1.1.6
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Configuring call-stack-0.1.0...
Installed byteable-0.1.1
Configuring cereal-0.5.4.0...
Installed base64-bytestring-1.0.0.1
Building call-stack-0.1.0...
Building cereal-0.5.4.0...
Configuring data-default-class-0.1.2.0...
Installed call-stack-0.1.0
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Configuring deepseq-generics-0.2.0.0...
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Installed deepseq-generics-0.2.0.0
Configuring dlist-0.8.0.2...
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Installed cereal-0.5.4.0
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Configuring hourglass-0.2.10...
Installed dlist-0.8.0.2
Building hourglass-0.2.10...
Configuring iso8601-time-0.1.4...
Installed hourglass-0.2.10
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Configuring mtl-2.2.1...
Installed iso8601-time-0.1.4
Building mtl-2.2.1...
Configuring memory-0.13...
Installed mtl-2.2.1
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Configuring nats-1.1.1...
Installed haskell-lexer-1.0.1
Building nats-1.1.1...
Configuring network-2.6.3.1...
Installed nats-1.1.1
Building network-2.6.3.1...
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Building old-locale-1.0.0.7...
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Installed old-locale-1.0.0.7
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Building stm-2.4.4.1...
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Installed stm-2.4.4.1
Building text-1.2.2.1...
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Configuring zlib-0.6.1.2...
Installed unix-compat-0.4.3.1
Building zlib-0.6.1.2...
Configuring ansi-wl-pprint-0.6.7.3...
Installed zlib-0.6.1.2
Building ansi-wl-pprint-0.6.7.3...
Installed ansi-wl-pprint-0.6.7.3
Configuring HUnit-1.5.0.0...
Building HUnit-1.5.0.0...
Installed text-1.2.2.1
Configuring pem-0.2.2...
Building pem-0.2.2...
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Building IfElse-0.85...
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Configuring cryptonite-0.20...
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Installed asn1-types-0.3.2
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Configuring socks-0.5.5...
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Building socks-0.5.5...
Configuring hslogger-1.2.10...
Installed socks-0.5.5
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Configuring vector-0.11.0.0...
Installed hslogger-1.2.10
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Configuring StateVar-1.1.0.4...
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Building StateVar-1.1.0.4...
Installed StateVar-1.1.0.4
Configuring async-2.1.1...
Building async-2.1.1...
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Installed async-2.1.1
Building exceptions-0.8.3...
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Building tagged-0.8.5...
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Installed exceptions-0.8.3
Building errors-2.1.3...
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Installed tagged-0.8.5
Building optparse-applicative-0.13.0.0...
Installed errors-2.1.3
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Building blaze-builder-0.4.0.2...
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Installed blaze-builder-0.4.0.2
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Building hashable-1.2.4.0...
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Installed double-conversion-2.0.1.0
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Configuring vector-binary-instances-0.2.3.3...
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Installed cookie-0.4.2.1
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Building streaming-commons-0.1.16...
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Configuring github-0.15.0...
Building github-0.15.0...
Installed github-0.15.0
Configuring github-backup-1.20141110...
Failed to install github-backup-1.20141110
Build log ( /home/builder/.cabal/logs/github-backup-1.20141110.log ):
cabal: Entering directory '/tmp/cabal-tmp-11561/github-backup-1.20141110'
cabal: Leaving directory '/tmp/cabal-tmp-11561/github-backup-1.20141110'
cabal: Error: some packages failed to install:
github-backup-1.20141110 failed during the configure step. The exception was:
user error ('/opt/ghc/8.0.2/bin/ghc' exited with an error:

/tmp/cabal-tmp-11561/github-backup-1.20141110/Utility/PosixFiles.hs:13:1:
warning: [-Wtabs]
Tab character found here, and in one further location.
Please use spaces instead.

/tmp/cabal-tmp-11561/github-backup-1.20141110/Utility/PartialPrelude.hs:47:1:
warning: [-Wtabs]
Tab character found here, and in one further location.
Please use spaces instead.

/tmp/cabal-tmp-11561/github-backup-1.20141110/Utility/Monad.hs:41:1: warning:
[-Wtabs]
Tab character found here, and in four further locations.
Please use spaces instead.

/tmp/cabal-tmp-11561/github-backup-1.20141110/Utility/FileSystemEncoding.hs:11:1:
warning: [-Wtabs]
Tab character found here, and in 22 further locations.
Please use spaces instead.

/tmp/cabal-tmp-11561/github-backup-1.20141110/Utility/Env.hs:81:1: warning:
[-Wtabs]
Tab character found here, and in one further location.
Please use spaces instead.

/tmp/cabal-tmp-11561/github-backup-1.20141110/Utility/UserInfo.hs:11:1:
warning: [-Wtabs]
Tab character found here, and in six further locations.
Please use spaces instead.

/tmp/cabal-tmp-11561/github-backup-1.20141110/Utility/Path.hs:44:1: warning:
[-Wtabs]
Tab character found here, and in 93 further locations.
Please use spaces instead.

/tmp/cabal-tmp-11561/github-backup-1.20141110/Utility/Data.hs:13:1: warning:
[-Wtabs]
Tab character found here, and in one further location.
Please use spaces instead.

/tmp/cabal-tmp-11561/github-backup-1.20141110/Utility/Exception.hs:11:1:
warning: [-Wtabs]
Tab character found here, and in 27 further locations.
Please use spaces instead.

/tmp/cabal-tmp-11561/github-backup-1.20141110/Utility/Misc.hs:40:1: warning:
[-Wtabs]
Tab character found here, and in 44 further locations.
Please use spaces instead.

/tmp/cabal-tmp-11561/github-backup-1.20141110/Utility/Process.hs:175:28:
error:
Ambiguous occurrence ‘createPipe’
It could refer to either ‘System.Process.createPipe’,
imported from ‘System.Process’ at
/tmp/cabal-tmp-11561/github-backup-1.20141110/Utility/Process.hs:41:1-57
(and originally defined in ‘System.Process.Internals’)
or ‘System.Posix.IO.createPipe’,
imported from ‘System.Posix.IO’ at
/tmp/cabal-tmp-11561/github-backup-1.20141110/Utility/Process.hs:49:1-22
(and originally defined in ‘unix-2.7.2.0:System.Posix.IO.Common’)
)