Rollup of 8 pull requests

[compiler-errors]

Successful merges:

• [bootstrap] Give a better error when trying to run a path with no registered step #96660 ([bootstrap] Give a better error when trying to run a path with no registered step)
• update jemallocator example to use 2018 edition import syntax #96701 (update jemallocator example to use 2018 edition import syntax)
• Fix an ICE on #96738 #96746 (Fix an ICE on Compiler crashes on syntax error when trying to call a function from a dependency #96738)
• bootstrap: bsd platform flags for split debuginfo #96758 (bootstrap: bsd platform flags for split debuginfo)
• Remove closures on expect_local to apply #[track_caller] #96778 (Remove closures on expect_local to apply #[track_caller])
• Fix an incorrect link in The Unstable Book #96781 (Fix an incorrect link in The Unstable Book)
• Link to correct issue in issue-95034 known-bug #96783 (Link to correct issue in issue-95034 known-bug)
• Add regression test for #96319 #96801 (Add regression test for Panic after changing field name on cached builds #96319)

Failed merges:

r? @ghost
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