Installation error

Installation not finished.
Info Packages marked with ⌃ and ⌅ have new versions available. Those with ⌃ may be upgradable, but those with ⌅ are restricted by compatibility constraints from upgrading. To see why use status --outdated -m
Precompiling project…
251 dependencies successfully precompiled in 483 seconds. 9 already precompiled.
2 dependencies had output during precompilation:
┌ PowerModelsACDC
│ WARNING: could not import JuMP.with_optimizer into PowerModelsACDC

┌ MKL_jll
│ Downloading artifact: MKL

│ [pid 7428] waiting for IO to finish:
│ Handle type uv_handle_t->data
│ timer 00000226803a8f60->00000226fd255ed0
│ This means that a package has started a background task or event source that has not finished running. For precompilation to complete successfully, the event source needs to be closed explicitly. See the developer documentation on fixing precompilation hangs for more help.

│ [pid 7428] waiting for IO to finish:
│ Handle type uv_handle_t->data
│ timer 00000226803a8f60->00000226fd255ed0
│ This means that a package has started a background task or event source that has not finished running. For precompilation to complete successfully, the event source needs to be closed explicitly. See the developer documentation on fixing precompilation hangs for more help.

Those look like warnings. Have you encountered any issues?

What is the output of

using Pkg 
pkg"status --outdated -m"

Okey.
I run :
pkg"status --outdated -m"
I don’t see MKL.
What I must input IO?