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# pre-build errors
Status code 502 Bad Gateway indicates failure
Stack backtrace:
0: anyhow::error::<impl core::convert::From<E> for anyhow::Error>::from
1: <rustwide::crates::registry::RegistryCrate as rustwide::crates::CrateTrait>::fetch
2: docs_rs::docbuilder::rustwide_builder::RustwideBuilder::build_package
3: prometheus::histogram::Histogram::observe_closure_duration
4: docs_rs::build_queue::BuildQueue::build_next_queue_package
5: docs_rs::utils::queue_builder::queue_builder
6: cratesfyi::CommandLine::handle_args
7: cratesfyi::main
8: std::sys::backtrace::__rust_begin_short_backtrace
9: std::rt::lang_start::{{closure}}
10: std::rt::lang_start_internal
11: main
12: __libc_start_main
at /build/glibc-uZu3wS/glibc-2.27/csu/../csu/libc-start.c:310
13: _start