mmap 131072 bytes at (nil): Cannot allocate memory about doctest

[newhoggy]

On MacOS, there is also an error, but it is very different:

doctests: 
lookupSymbol failed in relocateSection (relocate external)
/Users/runner/.cabal/store/ghc-8.10.4/dbl-cnvrsn-2.0.2.0-2cca6009/lib/libHSdbl-cnvrsn-2.0.2.0-2cca6009.a: unknown symbol `__ZNK17double_conversion23DoubleToStringConverter11ToPrecisionEdiPNS_13StringBuilderE'
GHC runtime linker: fatal error: I found a duplicate definition for symbol
   __ZNK17double_conversion6VectorIcEixEi
whilst processing object file
   /Users/runner/.cabal/store/ghc-8.10.4/dbl-cnvrsn-2.0.2.0-2cca6009/lib/libHSdbl-cnvrsn-2.0.2.0-2cca6009.a
The symbol was previously defined in
   /Users/runner/.cabal/store/ghc-8.10.4/dbl-cnvrsn-2.0.2.0-2cca6009/lib/libHSdbl-cnvrsn-2.0.2.0-2cca6009.a(hs-double-conversion.o)
This could be caused by:
   * Loading two different object files which export the same symbol
   * Specifying the same object file twice on the GHCi command line
   * An incorrect `package.conf' entry, causing some object to be
     loaded twice.
doctests: 
lookupSymbol failed in relocateSection (relocate external)
/Users/runner/.cabal/store/ghc-8.10.4/dbl-cnvrsn-2.0.2.0-2cca6009/lib/libHSdbl-cnvrsn-2.0.2.0-2cca6009.a: unknown symbol `__ZN17double_conversion6StrtofENS_6VectorIKcEEi'
GHC runtime linker: fatal error: I found a duplicate definition for symbol
   __ZN17double_conversion7BitCastIdyEET_RKT0_
whilst processing object file
   /Users/runner/.cabal/store/ghc-8.10.4/dbl-cnvrsn-2.0.2.0-2cca6009/lib/libHSdbl-cnvrsn-2.0.2.0-2cca6009.a
The symbol was previously defined in
   /Users/runner/.cabal/store/ghc-8.10.4/dbl-cnvrsn-2.0.2.0-2cca6009/lib/libHSdbl-cnvrsn-2.0.2.0-2cca6009.a(double-conversion.o)
This could be caused by:
   * Loading two different object files which export the same symbol
   * Specifying the same object file twice on the GHCi command line
   * An incorrect `package.conf' entry, causing some object to be
     loaded twice.
GHC runtime linker: fatal error: I found a duplicate definition for symbol
   __ZN17double_conversion6Bignum9LessEqualERKS0_S2_
whilst processing object file
   /Users/runner/.cabal/store/ghc-8.10.4/dbl-cnvrsn-2.0.2.0-2cca6009/lib/libHSdbl-cnvrsn-2.0.2.0-2cca6009.a
The symbol was previously defined in
   /Users/runner/.cabal/store/ghc-8.10.4/dbl-cnvrsn-2.0.2.0-2cca6009/lib/libHSdbl-cnvrsn-2.0.2.0-2cca6009.a(bignum-dtoa.o)
This could be caused by:
   * Loading two different object files which export the same symbol
   * Specifying the same object file twice on the GHCi command line
   * An incorrect `package.conf' entry, causing some object to be
     loaded twice.
GHC runtime linker: fatal error: I found a duplicate definition for symbol
   __ZN17double_conversion7BitCastIdyEET_RKT0_
whilst processing object file
   /Users/runner/.cabal/store/ghc-8.10.4/dbl-cnvrsn-2.0.2.0-2cca6009/lib/libHSdbl-cnvrsn-2.0.2.0-2cca6009.a
The symbol was previously defined in
   /Users/runner/.cabal/store/ghc-8.10.4/dbl-cnvrsn-2.0.2.0-2cca6009/lib/libHSdbl-cnvrsn-2.0.2.0-2cca6009.a(double-conversion.o)
This could be caused by:
   * Loading two different object files which export the same symbol
   * Specifying the same object file twice on the GHCi command line
   * An incorrect `package.conf' entry, causing some object to be
     loaded twice.
doctests: Could not load Object Code /Users/runner/.cabal/store/ghc-8.10.4/dbl-cnvrsn-2.0.2.0-2cca6009/lib/libHSdbl-cnvrsn-2.0.2.0-2cca6009.a(fast-dtoa.o).

doctests: doctests: unable to load package `double-conversion-2.0.2.0'

[andreasabel]

@newhoggy: Did you find anything useful at #271?