Enable our standard lints

From: EmbarkStudios/rust-ecosystem#59

.cargo/config.toml

@@ -0,0 +1,81 @@
+# add the below section to `.cargo/config.toml`
+
+[target.'cfg(all())']
+rustflags = [
+    # BEGIN - Embark standard lints v6 for Rust 1.55+
+    # do not change or add/remove here, but one can add exceptions after this section
+    # for more info see: <https://github.com/EmbarkStudios/rust-ecosystem/issues/59>
+    "-Dunsafe_code",
+    "-Wclippy::all",
+    "-Wclippy::await_holding_lock",
+    "-Wclippy::char_lit_as_u8",
+    "-Wclippy::checked_conversions",
+    "-Wclippy::dbg_macro",
+    "-Wclippy::debug_assert_with_mut_call",
+    "-Wclippy::doc_markdown",
+    "-Wclippy::empty_enum",
+    "-Wclippy::enum_glob_use",
+    "-Wclippy::exit",
+    "-Wclippy::expl_impl_clone_on_copy",
+    "-Wclippy::explicit_deref_methods",
+    "-Wclippy::explicit_into_iter_loop",
+    "-Wclippy::fallible_impl_from",
+    "-Wclippy::filter_map_next",
+    "-Wclippy::flat_map_option",
+    "-Wclippy::float_cmp_const",
+    "-Wclippy::fn_params_excessive_bools",
+    "-Wclippy::from_iter_instead_of_collect",
+    "-Wclippy::if_let_mutex",
+    "-Wclippy::implicit_clone",
+    "-Wclippy::imprecise_flops",
+    "-Wclippy::inefficient_to_string",
+    "-Wclippy::invalid_upcast_comparisons",
+    "-Wclippy::large_digit_groups",
+    "-Wclippy::large_stack_arrays",
+    "-Wclippy::large_types_passed_by_value",
+    "-Wclippy::let_unit_value",
+    "-Wclippy::linkedlist",
+    "-Wclippy::lossy_float_literal",
+    "-Wclippy::macro_use_imports",
+    "-Wclippy::manual_ok_or",
+    "-Wclippy::map_err_ignore",
+    "-Wclippy::map_flatten",
+    "-Wclippy::map_unwrap_or",
+    "-Wclippy::match_on_vec_items",
+    "-Wclippy::match_same_arms",
+    "-Wclippy::match_wild_err_arm",
+    "-Wclippy::match_wildcard_for_single_variants",
+    "-Wclippy::mem_forget",
+    "-Wclippy::mismatched_target_os",
+    "-Wclippy::missing_enforced_import_renames",
+    "-Wclippy::mut_mut",
+    "-Wclippy::mutex_integer",
+    "-Wclippy::needless_borrow",
+    "-Wclippy::needless_continue",
+    "-Wclippy::needless_for_each",
+    "-Wclippy::option_option",
+    "-Wclippy::path_buf_push_overwrite",
+    "-Wclippy::ptr_as_ptr",
+    "-Wclippy::rc_mutex",
+    "-Wclippy::ref_option_ref",
+    "-Wclippy::rest_pat_in_fully_bound_structs",
+    "-Wclippy::same_functions_in_if_condition",
+    "-Wclippy::semicolon_if_nothing_returned",
+    "-Wclippy::single_match_else",
+    "-Wclippy::string_add_assign",
+    "-Wclippy::string_add",
+    "-Wclippy::string_lit_as_bytes",
+    "-Wclippy::string_to_string",
+    "-Wclippy::todo",
+    "-Wclippy::trait_duplication_in_bounds",
+    "-Wclippy::unimplemented",
+    "-Wclippy::unnested_or_patterns",
+    "-Wclippy::unused_self",
+    "-Wclippy::useless_transmute",
+    "-Wclippy::verbose_file_reads",
+    "-Wclippy::zero_sized_map_values",
+    "-Wfuture_incompatible",
+    "-Wnonstandard_style",
+    "-Wrust_2018_idioms",
+    # END - Embark standard lints v6 for Rust 1.55+
+]