Wrap missing provider message correctly

[compiler-errors]

Fixes #108429

error: internal compiler error: compiler/rustc_middle/src/ty/query.rs:441:1: `tcx.trigger_delay_span_bug(DefId(0:3 ~ test[78c5]::main))` is not supported for local crate;
                                hint: Queries can be either made to the local crate, or the external crate. This error means you tried to use it for one that's not supported.
                                If that's not the case, trigger_delay_span_bug was likely never assigned to a provider function.

thread 'rustc' panicked at 'Box<dyn Any>', /home/ec2-user/rust3/compiler/rustc_errors/src/lib.rs:1651:9
stack backtrace:
   0:     0x7f51870926d7 - std::backtrace_rs::backtrace::libunwind::trace::hb0876bb39e7adf0d
                               at /home/ec2-user/rust3/library/std/src/../../backtrace/src/backtrace/libunwind.rs:93:5
   1:     0x7f51870926d7 - std::backtrace_rs::backtrace::trace_unsynchronized::h1bcab1313827007b
                               at /home/ec2-user/rust3/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
   2:     0x7f5187077e07 - std::sys_common::backtrace::_print_fmt::h262d2a62279fa102
                               at /home/ec2-user/rust3/library/std/src/sys_common/backtrace.rs:65:5

[rustbot]

r? @eholk

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[Noratrieb]

r? Nilstrieb
r=me when CI is green

[compiler-errors]

@bors r+ rollup

cc @GuillaumeGomez

[bors]

📌 Commit a861b19 has been approved by compiler-errors

It is now in the queue for this repository.

[compiler-errors]

@bors r=Nilstrieb

[bors]

💡 This pull request was already approved, no need to approve it again.

• There's another pull request that is currently being tested, blocking this pull request: Rollup of 8 pull requests #108413

[bors]

📌 Commit a861b19 has been approved by Nilstrieb

It is now in the queue for this repository.

[GuillaumeGomez]

Thanks for this! :)

[estebank]

I'm guessing the left padding wasn't originally intended, but it also doesn't overly hurt.