Starting download of /gnu/store/i3k2066fw3ayj7hy0670gzakffhwb8h0-rust-ryu-1.0.15.tar.gz
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following redirection to `https://static.crates.io/crates/ryu/ryu-1.0.15.crate'...
GC Warning: Repeated allocation of very large block (appr. size 69632):
	May lead to memory leak and poor performance

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