Error when hashing Measurement{Float64} about measurements.jl HOT 5 CLOSED

julia> x = 3 ± 0.1
3.0 ± 0.1

julia> a = 3 ± 0.1
3.0 ± 0.1

julia> x === a
false

julia> d = Dict(x => 42)
Dict{Measurement{Float64}, Int64} with 1 entry:
  3.0±0.1 => 42

julia> d[x]
42

julia> d[a]
42

julia> d[a] = 0
0

julia> d[a]
0

julia> d[x]
0

julia> using Measurements

julia> m = 1.0 ± 0.1
1.0 ± 0.1

julia> Dict(m=>"anything else here")
ERROR: MethodError: no method matching decompose(::Measurement{Float64})
Closest candidates are:
  decompose(::Integer) at float.jl:555
  decompose(::Float16) at float.jl:557
  decompose(::Float32) at float.jl:568
  ...
Stacktrace:
 [1] hash(x::Measurement{Float64}, h::UInt64)
   @ Base ./float.jl:491
 [2] hash(x::Measurement{Float64})
   @ Base ./hashing.jl:18
 [3] hashindex(key::Measurement{Float64}, sz::Int64)
   @ Base ./dict.jl:169
 [4] ht_keyindex2!(h::Dict{Measurement{Float64}, String}, key::Measurement{Float64})
   @ Base ./dict.jl:310
 [5] setindex!(h::Dict{Measurement{Float64}, String}, v0::String, key::Measurement{Float64})
   @ Base ./dict.jl:383
 [6] Dict{Measurement{Float64}, String}(kv::Tuple{Pair{Measurement{Float64}, String}})
   @ Base ./dict.jl:104
 [7] Dict(ps::Pair{Measurement{Float64}, String})
   @ Base ./dict.jl:124
 [8] top-level scope
   @ REPL[3]:1

julia> Base.hash(m::Measurement) = foldr(hash, (m.val, m.err, m.der, m.tag))

julia> Dict(m=>"anything else here")
Dict{Measurement{Float64}, String} with 1 entry:
  1.0±0.1 => "anything else here"