1698 impl<A: Allocator> Box<dyn Any, A> {
1751             let (raw, alloc): (*mut dyn Any, _) = Box::into_raw_with_allocator(self);  in downcast_unchecked()
1757 impl<A: Allocator> Box<dyn Any + Send, A> {
1810             let (raw, alloc): (*mut (dyn Any + Send), _) = Box::into_raw_with_allocator(self);  in downcast_unchecked()
1816 impl<A: Allocator> Box<dyn Any + Send + Sync, A> {
1869             let (raw, alloc): (*mut (dyn Any + Send + Sync), _) =  in downcast_unchecked()
2142 impl dyn Error {  impl
2147     pub fn downcast<T: Error + 'static>(self: Box<Self>) -> Result<Box<T>, Box<dyn Error>> {  in downcast()
2150                 let raw: *mut dyn Error = Box::into_raw(self);  in downcast()
2159 impl dyn Error + Send {  impl
2164     pub fn downcast<T: Error + 'static>(self: Box<Self>) -> Result<Box<T>, Box<dyn Error + Send>> {  in downcast()
2165         let err: Box<dyn Error> = self;  in downcast()
2166         <dyn Error>::downcast(err).map_err(|s| unsafe {  in downcast()
2168             mem::transmute::<Box<dyn Error>, Box<dyn Error + Send>>(s)  in downcast()
2173 impl dyn Error + Send + Sync {  impl
2179         let err: Box<dyn Error> = self;  in downcast()
2180         <dyn Error>::downcast(err).map_err(|s| unsafe {  in downcast()
2182             mem::transmute::<Box<dyn Error>, Box<dyn Error + Send + Sync>>(s)  in downcast()
2189 impl<'a, E: Error + 'a> From<E> for Box<dyn Error + 'a> {
2215     fn from(err: E) -> Box<dyn Error + 'a> {  in from()
2222 impl<'a, E: Error + Send + Sync + 'a> From<E> for Box<dyn Error + Send + Sync + 'a> {
2254     fn from(err: E) -> Box<dyn Error + Send + Sync + 'a> {  in from()
2261 impl From<String> for Box<dyn Error + Send + Sync> {
2276     fn from(err: String) -> Box<dyn Error + Send + Sync> {  in from()
2305 impl From<String> for Box<dyn Error> {
2318     fn from(str_err: String) -> Box<dyn Error> {  in from()
2319         let err1: Box<dyn Error + Send + Sync> = From::from(str_err);  in from()
2320         let err2: Box<dyn Error> = err1;  in from()
2327 impl<'a> From<&str> for Box<dyn Error + Send + Sync + 'a> {
2344     fn from(err: &str) -> Box<dyn Error + Send + Sync + 'a> {  in from()
2351 impl From<&str> for Box<dyn Error> {
2366     fn from(err: &str) -> Box<dyn Error> {  in from()
2373 impl<'a, 'b> From<Cow<'b, str>> for Box<dyn Error + Send + Sync + 'a> {
2388     fn from(err: Cow<'b, str>) -> Box<dyn Error + Send + Sync + 'a> {  in from()
2395 impl<'a> From<Cow<'a, str>> for Box<dyn Error> {
2409     fn from(err: Cow<'a, str>) -> Box<dyn Error> {  in from()
2422     fn cause(&self) -> Option<&dyn core::error::Error> {  in cause()
2426     fn source(&self) -> Option<&(dyn core::error::Error + 'static)> {  in source()