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Nightly cargo is sometimes slow to start #57774

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Nightly cargo is sometimes slow to start#57774
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shepmaster
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I-crashIssue: The compiler crashes (SIGSEGV, SIGABRT, etc). Use I-ICE instead when the compiler panics.T-infraRelevant to the infrastructure team, which will review and decide on the PR/issue.

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@moxian
moxian
opened on Jan 20, 2019
fn foo<T>() 
where T:std::marker::Sized
{
    let buf = std::mem::size_of::<T>();
}

fails to compile on nightly (in playground), timing out : https://play.rust-lang.org/?version=nightly&mode=debug&edition=2018&gist=ddbfcdb9f8be5d6984f1886cc201489e

Compiles fine on stable and nightly

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I-crashIssue: The compiler crashes (SIGSEGV, SIGABRT, etc). Use I-ICE instead when the compiler panics.T-infraRelevant to the infrastructure team, which will review and decide on the PR/issue.

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