Do not use deprecated functions from std::error::Error trait
#1151
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Thanks for the pull request, and welcome! The Rust team is excited to review your changes, and you should hear from @steveklabnik (or someone else) soon. If any changes to this PR are deemed necessary, please add them as extra commits. This ensures that the reviewer can see what has changed since they last reviewed the code. Due to the way GitHub handles out-of-date commits, this should also make it reasonably obvious what issues have or haven't been addressed. Large or tricky changes may require several passes of review and changes. Please see the contribution instructions for more information. |
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@yerke thank you |
Centril
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Mar 29, 2019
Update books Update reference, book, rust-by-example, edition-guide, embedded-book ## reference 15 commits in 41493ff..27ad493 2019-03-05 12:32:22 +0100 to 2019-03-26 02:06:15 +0100 - Document wasm_import_module for #[link]. (rust-lang/reference#554) - Fix tidy error. (rust-lang/reference#552) - Some minor contributing updates. (rust-lang/reference#551) - Document `type_length_limit`. (rust-lang/reference#546) - Add some terms to the glossary. (rust-lang/reference#547) - Document `target_feature` and `cfg_target_feature`. (rust-lang/reference#545) - Remove undocumented page (rust-lang/reference#539) - Reorg and update attributes (rust-lang/reference#537) - Fix some minor link errors. (rust-lang/reference#538) - Add linkchecker. (rust-lang/reference#521) - Expand docs on Macros By Example. (rust-lang/reference#511) - document #[panic_handler] (rust-lang/reference#362) - document #[used] (rust-lang/reference#361) - Note that UB is program-global (rust-lang/reference#490) - Fix copy-paste error in procedural-macros.md (rust-lang/reference#533) ## book 16 commits in 9cffbeabec3bcec42d09432bfe7705125c848889..b93ec30bbc7b1b5c2f44223249ab359bed2ed5a6 2019-03-02 08:22:41 -0500 to 2019-03-26 16:54:10 -0400 - Unignore example that now compiles - Fix code snippet (rust-lang/book#1863) - Fix mdbook link text in readme (rust-lang/book#1881) - Wrap to 80 cols - Make sentence more complete (rust-lang/book#1885) - consistenly use increment and decrement (rust-lang/book#1884) - Fix link to Reference's conditional-compilation. (rust-lang/book#1878) - Fix subject/verb agreement - Remove nostarch snapshot files that have been incorporated and checked - haha teach the dictionary steve's name - Add authorship info to the front page - fix accidental <ol>'s (rust-lang/book#1866) - Edits to Macros (rust-lang/book#1848) - Mention `lock` returns `MutexGuard` wrapped in a `LockResult` - Add an example that illustrates NLL (rust-lang/book#1842) - change the parameter name from `type` to `kind` (rust-lang/book#1845) ## rust-by-example 33 commits in 2ce92beabb912d417a7314d6da83ac9b50dc2afb..f68ef3d0f4959f6a7d92a08d9994b117f0f4d32d 2018-11-20 10:10:23 -0500 to 2019-03-12 15:32:12 -0300 - Fix some broken links. (rust-lang/rust-by-example#1161) - Update links in README (rust-lang/rust-by-example#1167) - Add score/lifetimes/trait.md (rust-lang/rust-by-example#1168) - Fix rust-lang/rust-by-example#1147 - No more `open_mode` method (rust-lang/rust-by-example#1164) - Fix for loop description in list print example (rust-lang/rust-by-example#1162) - Add link to Cargo chapter in the index page (rust-lang/rust-by-example#1159) - Fix grammar in sentence about integer notation (rust-lang/rust-by-example#1157) - Do not use deprecated functions from `std::error::Error` trait (rust-lang/rust-by-example#1151) - Update new_types.md to clarify conversion to base type (rust-lang/rust-by-example#1148) - Fix compatibility with Rust 2018 (rust-lang/rust-by-example#1150) - Hello: Fix hint link in `fmt` chapter. (rust-lang/rust-by-example#1146) - Clarify pub(restricted) example a bit (rust-lang/rust-by-example#1133) - Add "literal" to list of macro designators (rust-lang/rust-by-example#1153) - Minor fixes for the macros chapter (rust-lang/rust-by-example#1113) - Use new book links instead of the old second-edition ones (rust-lang/rust-by-example#1143) - Recommend implementing Display over ToString (rust-lang/rust-by-example#1145) - Remove unused import and format with `rustfmt` (rust-lang/rust-by-example#1144) - fix typo (rust-lang/rust-by-example#1142) - Update syntax for 2018 Edition (rust-lang/rust-by-example#1136) - Added two missing full stops (rust-lang/rust-by-example#1138) - Removed unnecessary spaces before macro designators in macros/dry (rust-lang/rust-by-example#1139) - fix install mdbook command (rust-lang/rust-by-example#1128) - Changed word `function` to `type` in comment of fn area (rust-lang/rust-by-example#1132) - Added two missing backticks in generics/multi_bounds (rust-lang/rust-by-example#1129) - Fixed small logic error in error/option_unwrap/and_then (rust-lang/rust-by-example#1127) - Fix typo (rust-lang/rust-by-example#1125) - The code of conduct link was dead. I fixed it. (rust-lang/rust-by-example#1122) - I added a space in the Display fmt for Complex (rust-lang/rust-by-example#1123) - Fix Rust install link in the index (rust-lang/rust-by-example#1124) - Update cargo conventions section (rust-lang/rust-by-example#1121) - Fixed curly braces in the `To and from Strings` chapter to be parentheses (rust-lang/rust-by-example#1120) - Edit a typo (rust-lang/rust-by-example#1119) - Fixes rust-lang/rust-by-example#1115 by correcting the typo from into_iterator to into_iter (rust-lang/rust-by-example#1118) ## edition-guide 1 commits in aa0022c875907886cae8f3ef8e9ebf6e2a5e728d..b56ddb11548450a6df4edd1ed571b2bc304eb9e6 2019-02-27 22:10:39 -0800 to 2019-03-10 10:23:16 +0100 - Links fixes (rust-lang/edition-guide#133) ## embedded-book 6 commits in 9e656ead82bfe869493dec82653a52e27fa6a05c..07fd3880ea0874d82b1d9ed30ad3427ec98b4e8a 2019-03-03 16:03:26 +0000 to 2019-03-27 15:40:52 +0000 - Fix test errors. (rust-embedded/book#180) - Update qemu.md (rust-embedded/book#170) - Update no-std.md to remove obsolete FAQ link (rust-embedded/book#177) - We've come a long way :) (rust-embedded/book#176) - Correct link to team (rust-embedded/book#175) - Update some book links to their new homes. (rust-embedded/book#173)
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According to https://doc.rust-lang.org/std/error/trait.Error.html,
fn descriptionis deprecated in favor ofDisplaytrait andfn causewill be deprecated starting from 1.33 in favor offn source(which is already available on stable from 1.30).I updated the examples accordingly.