Improve crate descriptors to be more cargo-friendly (#1844)

* Update secp dependency to use crates.io version
* Add more details to various Cargo.toml
* Remove use of env variables that aren't reliably provided by cargo

src/bin/grin.rs

@@ -52,30 +52,27 @@ pub mod built_info {
 	include!(concat!(env!("OUT_DIR"), "/built.rs"));
 }
 
-pub fn info_strings() -> (String, String, String) {
+pub fn info_strings() -> (String, String) {
 	(
 		format!(
 			"This is Grin version {}{}, built for {} by {}.",
 			built_info::PKG_VERSION,
 			built_info::GIT_VERSION.map_or_else(|| "".to_owned(), |v| format!(" (git {})", v)),
 			built_info::TARGET,
-			built_info::RUSTC_VERSION
+			built_info::RUSTC_VERSION,
 		).to_string(),
 		format!(
-			"Built with profile \"{}\", features \"{}\" on {}.",
+			"Built with profile \"{}\", features \"{}\".",
 			built_info::PROFILE,
 			built_info::FEATURES_STR,
-			built_info::BUILT_TIME_UTC
 		).to_string(),
-		format!("Dependencies:\n {}", built_info::DEPENDENCIES_STR).to_string(),
 	)
 }
 
 fn log_build_info() {
-	let (basic_info, detailed_info, deps) = info_strings();
+	let (basic_info, detailed_info) = info_strings();
 	info!("{}", basic_info);
 	debug!("{}", detailed_info);
-	trace!("{}", deps);
 }
 
 fn main() {

src/bin/tui/version.rs

@@ -31,7 +31,7 @@ pub struct TUIVersionView;
 impl TUIStatusListener for TUIVersionView {
 	/// Create basic status view
 	fn create() -> Box<View> {
-		let (basic_info, detailed_info, _) = info_strings();
+		let (basic_info, detailed_info) = info_strings();
 		let basic_status_view = BoxView::with_full_screen(
 			LinearLayout::new(Orientation::Vertical)
 				.child(TextView::new(basic_info))

src/build/build.rs

@@ -53,11 +53,12 @@ fn main() {
 	// build and versioning information
 	let mut opts = built::Options::default();
 	opts.set_dependencies(true);
-	built::write_built_file_with_opts(
+	// don't fail the build if something's missing, may just be cargo release
+	let _ = built::write_built_file_with_opts(
 		&opts,
 		env!("CARGO_MANIFEST_DIR"),
 		format!("{}{}", env::var("OUT_DIR").unwrap(), "/built.rs"),
-	).expect("Failed to acquire build-time information");
+	);
 
 	install_web_wallet();
 }