Exception thrown by objective function is not rethrown by nlopt

[ikirill]

The following test fails for me using ] dev NLopt. I expected the exception from within obj to be rethrown to the called on NLopt.optimize

using Test

x0 = [0.5,0.7]
obj(x) = (error("test"); dot(x,x))
opt = NLopt.Opt(:LN_SBPLX, length(x0))
opt.lower_bounds = [-1,-1]
opt.upper_bounds = [1,1]
opt.min_objective=obj

# @show NLopt.optimize(opt, x0)
@test_throws ErrorException NLopt.optimize(opt, x0)

Test Failed at /home/kirill/Sandboxes/SportsModelling/test/nlopt_exceptions.jl:11
  Expression: NLopt.optimize(opt, x0)
    Expected: ErrorException
  No exception thrown

Instead optimize returns:

NLopt.optimize(opt, x0) = (0.0, [0.5, 0.7], :FORCED_STOP)

julia> versioninfo()
Julia Version 1.5.3
Commit 788b2c77c1 (2020-11-09 13:37 UTC)
Platform Info:
  OS: Linux (x86_64-pc-linux-gnu)
  CPU: AMD Ryzen 7 3700X 8-Core Processor
  WORD_SIZE: 64
  LIBM: libopenlibm
  LLVM: libLLVM-9.0.1 (ORCJIT, znver2)

(@v1.5) pkg> status
Status `~/.julia/environments/v1.5/Project.toml`
  [764a87c0] BoundaryValueDiffEq v2.7.0
  [336ed68f] CSV v0.8.2
  [a2cac450] ColorBrewer v0.4.0
  [5ae59095] Colors v0.12.6
  [a93c6f00] DataFrames v0.22.2
  [0c46a032] DifferentialEquations v6.16.0
  [31c24e10] Distributions v0.24.10
  [442a2c76] FastGaussQuadrature v0.4.4
  [53c48c17] FixedPointNumbers v0.8.4
  [28b8d3ca] GR v0.53.0
  [cc18c42c] GaussianMixtures v0.3.4
  [7073ff75] IJulia v1.23.1
  [82e4d734] ImageIO v0.4.1
  [6218d12a] ImageMagick v1.1.6
  [02fcd773] ImageTransformations v0.8.8
  [916415d5] Images v0.23.3
  [a98d9a8b] Interpolations v0.13.1
  [76087f3c] NLopt v0.6.2 `~/.julia/dev/NLopt`
  [9b87118b] PackageCompiler v1.2.3
  [91a5bcdd] Plots v1.10.1
  [1fd47b50] QuadGK v2.4.1
  [295af30f] Revise v3.1.9
  [2913bbd2] StatsBase v0.33.2
  [bd369af6] Tables v1.2.2

[ikirill]

Quote from readme:

You can do this by throwing any exception inside your objective/constraint functions: the optimization will be halted gracefully, and the same exception will be thrown to the caller.