Julia 0.6: ERROR: MethodError: no method matching start(::Base.LibGit2.GitRepo)

[dlfivefifty]

julia> versioninfo()
Julia Version 0.6.0-dev.2550
Commit f66c866 (2017-02-03 08:59 UTC)
Platform Info:
  OS: macOS (x86_64-apple-darwin16.3.0)
  CPU: Intel(R) Core(TM) i7-3820QM CPU @ 2.70GHz
  WORD_SIZE: 64
  BLAS: libgfortblas
  LAPACK: liblapack
  LIBM: libopenlibm
  LLVM: libLLVM-3.9.1 (ORCJIT, ivybridge)

julia> PkgDev.tag("BandedMatrices")
INFO: Tagging BandedMatrices v0.2.1
ERROR: MethodError: no method matching start(::Base.LibGit2.GitRepo)
Closest candidates are:
  start(::SimpleVector) at essentials.jl:246
  start(::Base.MethodList) at reflection.jl:494
  start(::ExponentialBackOff) at error.jl:107
  ...
Stacktrace:
 [1] mapfoldl(::Base.#identity, ::Function, ::Base.LibGit2.GitRepo) at ./reduce.jl:67
 [2] dims2cat at ./abstractarray.jl:1090 [inlined]
 [3] cat_t(::Base.LibGit2.GitRepo, ::Type{T} where T, ::DataType, ::Vararg{Any,N} where N) at ./abstractarray.jl:1095
 [4] with(::PkgDev.Entry.##14#17{String}, ::Base.LibGit2.GitRepo) at ./libgit2/types.jl:577
 [5] write_tag_metadata(::Base.LibGit2.GitRepo, ::String, ::VersionNumber, ::String, ::Bool) at /Users/solver/.julia/v0.6/PkgDev/src/entry.jl:126
 [6] (::PkgDev.Entry.##43#51{String,Bool})(::Base.LibGit2.GitRepo) at /Users/solver/.julia/v0.6/PkgDev/src/entry.jl:269
 [7] transact(::PkgDev.Entry.##43#51{String,Bool}, ::Base.LibGit2.GitRepo) at ./libgit2/libgit2.jl:631
 [8] (::PkgDev.Entry.##37#45{String,Bool,String})(::Base.LibGit2.GitRepo) at /Users/solver/.julia/v0.6/PkgDev/src/entry.jl:268
 [9] with(::PkgDev.Entry.##37#45{String,Bool,String}, ::Base.LibGit2.GitRepo) at ./libgit2/types.jl:577
 [10] tag(::String, ::Symbol, ::Bool, ::String) at /Users/solver/.julia/v0.6/PkgDev/src/entry.jl:227
 [11] (::Base.Pkg.Dir.##2#3{Array{Any,1},PkgDev.Entry.#tag,Tuple{String,Symbol}})() at ./pkg/dir.jl:31
 [12] cd(::Base.Pkg.Dir.##2#3{Array{Any,1},PkgDev.Entry.#tag,Tuple{String,Symbol}}, ::String) at ./file.jl:69
 [13] #cd#1(::Array{Any,1}, ::Function, ::Function, ::String, ::Vararg{Any,N} where N) at ./pkg/dir.jl:31
 [14] tag(::String) at /Users/solver/.julia/v0.6/PkgDev/src/PkgDev.jl:47

[tkelman]

cc @simonbyrne @kshyatt are some changes needed here for recent libgit2 refactorings?