This was used by the old framework that was removed in rust-lang#69644.

Use associated numeric consts in documentation

Now when the associated constants on int/float types are stabilized and the recommended way of accessing said constants (rust-lang#68952). We can start using it in this repository, and recommend it via documentation example code.

This PR is the reincarnation of rust-lang#67913 minus the actual adding + stabilization of said constants. (EDIT: Now it's only changing the documentation. So users will see the new consts, but we don't yet update the internal code)

Because of how fast bit rot happens to PRs that touch this many files, it does not try to replace 100% of the old usage of the constants in the entire repo, but a good chunk of them.

Hide `task_context` when lowering body

Fixes rust-lang#70594

…eanup, r=nikomatsakis

Remove unused graphviz emitter

This was only used by the old dataflow framework that was removed in rust-lang#69644.

…an-DPC

Clean up E0502 explanation

r? @Dylan-DPC

Add test for rust-lang#59023

Adds a test for rust-lang#59023

Closes rust-lang#59023