Resolving dependencies...
Configuring mtl-2.2.1...
Configuring old-locale-1.0.0.7...
Building old-locale-1.0.0.7...
Building mtl-2.2.1...
Installed old-locale-1.0.0.7
Configuring primitive-0.6.1.0...
Building primitive-0.6.1.0...
Configuring stm-2.4.4.1...
Installed mtl-2.2.1
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...
Configuring old-time-1.1.0.3...
Installed stringsearch-0.3.6.6
Building old-time-1.1.0.3...
Installed old-time-1.1.0.3
Configuring vector-0.11.0.0...
Building vector-0.11.0.0...
Installed text-1.2.2.1
Configuring hashable-1.2.4.0...
Building hashable-1.2.4.0...
Installed hashable-1.2.4.0
Installed vector-0.11.0.0
Configuring hashtables-1.2.1.0...
Building hashtables-1.2.1.0...
Installed hashtables-1.2.1.0
Configuring RefSerialize-0.3.1.4...
Building RefSerialize-0.3.1.4...
Installed RefSerialize-0.3.1.4
Configuring TCache-0.10.0.1...
Building TCache-0.10.0.1...
Failed to install TCache-0.10.0.1
Build log ( /home/builder/.cabal/logs/TCache-0.10.0.1.log ):
cabal: Entering directory '/tmp/cabal-tmp-11050/TCache-0.10.0.1'
Configuring TCache-0.10.0.1...
Building TCache-0.10.0.1...
Preprocessing library TCache-0.10.0.1...

on the commandline: warning:
    -XOverlappingInstances is deprecated: instead use per-instance pragmas OVERLAPPING/OVERLAPPABLE/OVERLAPS
[1 of 9] Compiling Data.TCache.IResource ( Data/TCache/IResource.hs, dist/build/Data/TCache/IResource.o )

Data/TCache/IResource.hs:62:5: warning: [-Wtabs]
    Tab character found here, and in one further location.
    Please use spaces instead.
[2 of 9] Compiling Data.TCache.Defs ( Data/TCache/Defs.hs, dist/build/Data/TCache/Defs.o )
[3 of 9] Compiling Data.TCache.Triggers ( Data/TCache/Triggers.hs, dist/build/Data/TCache/Triggers.o )
[4 of 9] Compiling Data.TCache      ( Data/TCache.hs, dist/build/Data/TCache.o )

Data/TCache.hs:254:1: error:
    Failed to load interface for ‘Data.HashTable’
    Perhaps you meant
      Data.Hashable (needs flag -package-key hashable-1.2.4.0)
      Data.HashTable.IO (needs flag -package-key hashtables-1.2.1.0)
    Use -v to see a list of the files searched for.
cabal: Leaving directory '/tmp/cabal-tmp-11050/TCache-0.10.0.1'
cabal: Error: some packages failed to install:
TCache-0.10.0.1 failed during the building phase. The exception was:
ExitFailure 1