Regression: overflow evaluating X: MetaSized

See https://crater-reports.s3.amazonaws.com/beta-1.89-4/beta-2025-07-03/gh/red-lightning123.hwc/log.txt:

[INFO] [stdout] error[E0275]: overflow evaluating the requirement `ElementArray: MetaSized`
[INFO] [stdout]    --> hwc_lang_cbml/src/tags/src/parse/mod.rs:3:48
[INFO] [stdout]     |
[INFO] [stdout] 3   | pub fn parse_file_tokens(tokens : &[Token]) -> Result<File, String> {
[INFO] [stdout]     |                                                ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] note: required for `Box<ElementArray>` to implement `ParseTokens`
[INFO] [stdout]    --> hwc_lang_cbml/src/tags/src/parse/combinators.rs:5:32
[INFO] [stdout]     |
[INFO] [stdout] 5   | impl<T : ParseTokens + ?Sized> ParseTokens for Box<T> {
[INFO] [stdout]     |      -                         ^^^^^^^^^^^     ^^^^^^
[INFO] [stdout]     |      |
[INFO] [stdout]     |      unsatisfied trait bound introduced here
[INFO] [stdout] note: required because it appears within the type `NestElement`
[INFO] [stdout]    --> hwc_lang_cbml/src/tags/src/parse/nest_element.rs:7:5
[INFO] [stdout]     |
[INFO] [stdout] 7   |     NestElement,
[INFO] [stdout]     |     ^^^^^^^^^^^
[INFO] [stdout] note: required for `combinators::Any<(NestElement, TextElement, EmptyElement)>` to implement `ParseTokens`
[INFO] [stdout]    --> hwc_lang_cbml/src/tags/src/parse/combinators.rs:110:38
[INFO] [stdout]     |
[INFO] [stdout] 110 |           impl<$($T : ParseTokens, )*> ParseTokens for Any<($($T, )*)> {
[INFO] [stdout]     |                                        ^^^^^^^^^^^     ^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 139 | / impl_any_up_to! {
[INFO] [stdout] 140 | |     [AnyVariants8 AnyVariants7 AnyVariants6 AnyVariants5 AnyVariants4 AnyVariants3 AnyVariants2 AnyVariants1]
[INFO] [stdout] 141 | |     [V8 V7 V6 V5 V4 V3 V2 V1]
[INFO] [stdout] 142 | |     [T8 T7 T6 T5 T4 T3 T2 T1]
[INFO] [stdout]     | |                           -- unsatisfied trait bound introduced here
[INFO] [stdout] 143 | | }
[INFO] [stdout]     | |_- in this macro invocation
[INFO] [stdout] note: required because it appears within the type `element::Element`
[INFO] [stdout]    --> hwc_lang_cbml/src/tags/src/parse/element.rs:7:5
[INFO] [stdout]     |
[INFO] [stdout] 7   |     Element,
[INFO] [stdout]     |     ^^^^^^^
[INFO] [stdout] note: required for `Group<(Optional<Whitespace>, element::Element, Optional<Whitespace>)>` to implement `ParseTokens`
[INFO] [stdout]    --> hwc_lang_cbml/src/tags/src/parse/combinators.rs:47:38
[INFO] [stdout]     |
[INFO] [stdout] 47  |         impl<$($T : ParseTokens, )*> ParseTokens for Group<($($T, )*)> {
[INFO] [stdout]     |                                      ^^^^^^^^^^^     ^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 59  | impl_group_up_to! { T8 T7 T6 T5 T4 T3 T2 T1 }
[INFO] [stdout]     | ---------------------------------------------
[INFO] [stdout]     | |                                     |
[INFO] [stdout]     | |                                     unsatisfied trait bound introduced here
[INFO] [stdout]     | in this macro invocation
[INFO] [stdout] note: required because it appears within the type `file::File`
[INFO] [stdout]    --> hwc_lang_cbml/src/tags/src/parse/file.rs:7:5
[INFO] [stdout]     |
[INFO] [stdout] 7   |     File,
[INFO] [stdout]     |     ^^^^
[INFO] [stdout] note: required by an implicit `Sized` bound in `Result`
[INFO] [stdout]    --> /rustc/b5e10d8c000a153cae6a14d70372dc4b39439a3f/library/core/src/result.rs:548:1
[INFO] [stdout]     = note: this error originates in the macro `impl_any_traits_up_to` which comes from the expansion of the macro `impl_group_up_to` (in Nightly builds, run with -Z macro-backtrace for more info)

Start with the linked Crater log and trace the reported overflow through hwc_lang_cbml/src/tags/src/parse/mod.rs, parse/combinators.rs, nest_element.rs, element.rs, and file.rs. Reproduce the compiler error if the external report remains available, then identify the regression boundary and verify that the same input no longer overflows without breaking the affected ParseTokens implementations.