no julia 1.0 unfortunately

Author: Stephan Sahm

Project.toml

@@ -8,7 +8,17 @@ Compat = "34da2185-b29b-5c13-b0c7-acf172513d20"
 
 [compat]
 Compat = "2.1, 3"
-julia = "1"
+julia = "1.3"
+# This package is not compatible with julia 1.0
+# Either: Error During Test at /home/runner/work/DataTypesBasic.jl/DataTypesBasic.jl/test/Either.jl:6
+#   Test threw exception
+#   Expression: getrightOption(Either{String}(3)) == Option(3)
+#   MethodError: Union{Nothing, Identity{T}} where T(::Int64) is ambiguous. Candidates:
+#     (::Type{Union{Nothing, Identity{T}}})(a::T) where T in DataTypesBasic at /home/runner/work/DataTypesBasic.jl/DataTypesBasic.jl/src/Option.jl:6
+#     (::Type{Union{Nothing, Identity{T}} where T})(a::T) where T in DataTypesBasic at /home/runner/work/DataTypesBasic.jl/DataTypesBasic.jl/src/Option.jl:8
+#   Possible fix, define
+#     Nothing(::T)
+# TODO check whether this might be added to 1.0.X somewhen
 
 [extras]
 Test = "8dfed614-e22c-5e08-85e1-65c5234f0b40"

test/runtests.jl

@@ -1,6 +1,8 @@
 using Test
 using DataTypesBasic
 
+@test isempty(detect_ambiguities(DataTypesBasic))
+
 @testset "Const" begin
   include("Const.jl")
 end