Unhelpful error for different impl method signature vs trait #3006
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A-type-system
Area: Type system
E-easy
Call for participation: Easy difficulty. Experience needed to fix: Not much. Good first issue.
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Closing, I think this is fixed, but if it's not, please reopen with the specific code example causing the error. |
bors
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May 15, 2021
RalfJung
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miri-script and cargo-miri cleanups At least in an initial test, `cmd!(Shell::new()?, "env")` does show the full environment. Let's see what CI says. `@osiewicz` why did you add this code to forward the host environment?
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error: methodnew_objecthas an incompatible type: () vs enum core::result::resultIt took me a while to figure out that this was talking about the expected return type from the trait versus what the impl method was declaring. We should work the words trait and impl into that error somehow.
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