registry dirty


#1

(v1.1) pkg> up
Updating registry at ~/.julia/registries/General
┌ Warning: Some registries failed to update:
│ — ~/.julia/registries/General — registry dirty
└ @ Pkg.Types /build/julia/src/julia-1.1.0/usr/share/julia/stdlib/v1.1/Pkg/src/Types.jl:1269
Resolving package versions…
Updating ~/.julia/environments/v1.1/Project.toml
[no changes]
Updating ~/.julia/environments/v1.1/Manifest.toml
[no changes]

(v1.1) pkg> st
Status ~/.julia/environments/v1.1/Project.toml
[c7e460c6] ArgParse v0.6.2
[c52e3926] Atom v0.8.3
[6e4b80f9] BenchmarkTools v0.4.2
[336ed68f] CSV v0.4.3
[159f3aea] Cairo v0.5.6
[944b1d66] CodecZlib v0.5.2
[3a865a2d] CuArrays v1.0.1
[a93c6f00] DataFrames v0.17.1
[31a5f54b] Debugger v0.2.2
[587475ba] Flux v0.8.1
[38e38edf] GLM v1.1.1
[28b8d3ca] GR v0.38.1
[c91e804a] Gadfly v1.0.1
[6218d12a] ImageMagick v0.7.1
[aa1ae85d] JuliaInterpreter v0.3.2
[652e05fd] JuliaZH v0.1.1
[e5e0dc1b] Juno v0.7.0
[1902f260] Knet v1.2.1
[9b87118b] PackageCompiler v0.6.3
[91a5bcdd] Plots v0.23.2
[ce6b1742] RDatasets v0.6.1
[ee283ea6] Rebugger v0.3.0
[295af30f] Revise v2.0.4
[f3b207a7] StatsPlots v0.10.2
[b8865327] UnicodePlots v1.1.0
[9abbd945] Profile

这个一般是什么原因?能改正吗?求助