See,
$ gometalinter --vendor --disable-all --enable=megacheck --disable=gotype --deadline 6m ./...
pkg/services/alerting/notifiers/telegram_test.go:55:44:warning: do not pass a nil Context, even if a function permits it; pass context.TODO if you are unsure about which Context to use (SA1012) (megacheck)
pkg/services/alerting/notifiers/telegram_test.go:71:45:warning: do not pass a nil Context, even if a function permits it; pass context.TODO if you are unsure about which Context to use (SA1012) (megacheck)
pkg/services/alerting/notifiers/telegram_test.go:88:45:warning: do not pass a nil Context, even if a function permits it; pass context.TODO if you are unsure about which Context to use (SA1012) (megacheck)
pkg/services/alerting/notifiers/telegram_test.go:104:45:warning: do not pass a nil Context, even if a function permits it; pass context.TODO if you are unsure about which Context to use (SA1012) (megacheck)