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# pre-build errors
the crate depends on yanked dependencies:
Updating crates.io index
error: failed to select a version for the requirement `pbkdf2 = "^0.2.0"`
candidate versions found which didn't match: 0.13.0-pre.1, 0.13.0-pre.0, 0.12.2, ...
location searched: crates.io index
required by package `mongodb v0.3.12`
... which satisfies dependency `mongodb = "^0.3.12"` of package `r2d2-mongodb v0.2.2`
... which satisfies dependency `r2d2-mongodb = "^0.2.2"` of package `mongodb-helper v0.1.6 (/home/cratesfyi/workspace-builder/builds/mongodb-helper-0.1.6/source)`
if you are looking for the prerelease package it needs to be specified explicitly
pbkdf2 = { version = "0.13.0-pre.1" }
Stack backtrace:
0: anyhow::error::<impl core::convert::From<E> for anyhow::Error>::from
1: rustwide::prepare::Prepare::capture_lockfile
2: rustwide::prepare::Prepare::prepare
3: rustwide::build::BuildDirectory::run
4: docs_rs::docbuilder::rustwide_builder::RustwideBuilder::build_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