Error code E0739
Note: this error code is no longer emitted by the compiler.
#[track_caller] must be applied to a function
Erroneous code example:
#[track_caller]
struct Bar {
a: u8,
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#[track_caller] must be applied to a function
Erroneous code example:
#[track_caller]
struct Bar {
a: u8,
}