Variables with a mixed primal start values

[rb004f]

Problems with variables that have a mix of initial starting points and no initial starting points results in an exception error. See

using JuMP
using Gurobi

m = Model()
@variable(m,x, lower_bound=0, upper_bound=2, start=0)
@variable(m,y, lower_bound=0, upper_bound=2)
JuMP.optimize!(m, with_optimizer(Gurobi.Optimizer))

This issue is likely related to this issue jump-dev/Ipopt.jl#155

[jd-lara]

Adding another test to the this thread

https://gist.github.com/jd-lara/23a6e08a41dc3ad6ee5d239b38c55307

[odow]

Solved by the re-write of the MOI wrapper: #216