Failing tests only:

 ./.evergreen/test-on-docker -d ubuntu1804 MONGODB_VERSION=4.7 TOPOLOGY=sharded-cluster RVM_RUBY=ruby-2.7 -s .evergreen/run-tests.sh TEST_CMD="bundle exec rspec ./spec/mongo/grid/fs_bucket_spec.rb" -p

    ./spec/mongo/grid/fs_bucket_spec.rb (6)

1) ./spec/mongo/grid/fs_bucket_spec.rb[1:2:1:1] @ 2021-05-28 14:37:50.755 +0000

Mongo::Grid::FSBucket#find when there is no selector provided returns a collection view

Mongo::Error::OperationFailure: [249:StaleDbVersion]: got stale databaseVersion response from shard shard01 at host localhost:27019 :: caused by :: don't know dbVersion for database ruby-driver (on localhost:27018)

/data/mci/11602ea4553f4aed663c563613bea367/src/lib/mongo/operation/result.rb:348:in `raise_operation_failure'
/data/mci/11602ea4553f4aed663c563613bea367/src/lib/mongo/operation/result.rb:314:in `validate!'
/data/mci/11602ea4553f4aed663c563613bea367/src/lib/mongo/operation/shared/response_handling.rb:36:in `block (3 levels) in validate_result'
/data/mci/11602ea4553f4aed663c563613bea367/src/lib/mongo/operation/shared/response_handling.rb:107:in `add_server_diagnostics'
/data/mci/11602ea4553f4aed663c563613bea367/src/lib/mongo/operation/shared/response_handling.rb:35:in `block (2 levels) in validate_result'
/data/mci/11602ea4553f4aed663c563613bea367/src/lib/mongo/operation/shared/response_handling.rb:54:in `add_error_labels'
/data/mci/11602ea4553f4aed663c563613bea367/src/lib/mongo/operation/shared/response_handling.rb:34:in `block in validate_result'
/data/mci/11602ea4553f4aed663c563613bea367/src/lib/mongo/operation/shared/response_handling.rb:93:in `unpin_maybe'
/data/mci/11602ea4553f4aed663c563613bea367/src/lib/mongo/operation/shared/response_handling.rb:33:in `validate_result'
/data/mci/11602ea4553f4aed663c563613bea367/src/lib/mongo/operation/shared/executable.rb:49:in `block in execute'
/data/mci/11602ea4553f4aed663c563613bea367/src/lib/mongo/operation/shared/executable.rb:48:in `tap'
/data/mci/11602ea4553f4aed663c563613bea367/src/lib/mongo/operation/shared/executable.rb:48:in `execute'
/data/mci/11602ea4553f4aed663c563613bea367/src/lib/mongo/operation/shared/polymorphic_operation.rb:37:in `block in execute'
/data/mci/11602ea4553f4aed663c563613bea367/src/lib/mongo/server/connection_pool.rb:593:in `with_connection'
/data/mci/11602ea4553f4aed663c563613bea367/src/lib/mongo/server.rb:441:in `with_connection'
/data/mci/11602ea4553f4aed663c563613bea367/src/lib/mongo/operation/shared/polymorphic_operation.rb:35:in `execute'
/data/mci/11602ea4553f4aed663c563613bea367/src/lib/mongo/index/view.rb:224:in `block in create_many'
/data/mci/11602ea4553f4aed663c563613bea367/src/lib/mongo/client.rb:1060:in `with_session'
/data/mci/11602ea4553f4aed663c563613bea367/src/lib/mongo/index/view.rb:193:in `create_many'
/data/mci/11602ea4553f4aed663c563613bea367/src/lib/mongo/index/view.rb:153:in `create_one'
/data/mci/11602ea4553f4aed663c563613bea367/src/lib/mongo/grid/fs_bucket.rb:511:in `ensure_indexes!'
/data/mci/11602ea4553f4aed663c563613bea367/src/lib/mongo/grid/fs_bucket.rb:176:in `insert_one'
/data/mci/11602ea4553f4aed663c563613bea367/src/spec/mongo/grid/fs_bucket_spec.rb:180:in `block (5 levels) in <top (required)>'
/data/mci/11602ea4553f4aed663c563613bea367/src/spec/mongo/grid/fs_bucket_spec.rb:179:in `each'
/data/mci/11602ea4553f4aed663c563613bea367/src/spec/mongo/grid/fs_bucket_spec.rb:179:in `block (4 levels) in <top (required)>'