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fix compile bug with panic! #1433
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```bash Compiling playground v0.0.1 (/playground) warning: panic message is not a string literal --> src/main.rs:48:32 | 48 | Err(why) => panic!(match why { | ________________________________^ 49 | | MathError::NonPositiveLogarithm 50 | | => "logarithm of non-positive number", 51 | | MathError::DivisionByZero ... | 54 | | => "square root of negative number", 55 | | }), | |_____________^ | = note: `#[warn(non_fmt_panic)]` on by default = note: this is no longer accepted in Rust 2021 help: add a "{}" format string to Display the message | 48 | Err(why) => panic!("{}", match why { | ^^^^^ help: or use std::panic::panic_any instead | 48 | Err(why) => std::panic::panic_any(match why { | ^^^^^^^^^^^^^^^^^^^^^^ warning: 1 warning emitted Finished dev [unoptimized + debuginfo] target(s) in 1.46s Running `target/debug/playground` thread 'main' panicked at 'square root of negative number', src/main.rs:48:25 note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace ```
Thanks for the pull request, and welcome! The Rust team is excited to review your changes, and you should hear from @marioidival (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 Due to the way GitHub handles out-of-date commits, this should also make it reasonably obvious what issues have or haven't been addressed.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. |
Update books ## nomicon 1 commits in 6fe476943afd53a9a6e91f38a6ea7bb48811d8ff..8551afbb2ca6f5ea37fe58380318b209785e4e02 2021-03-10 07:28:57 +0900 to 2021-04-01 21:58:50 +0900 - Add example of thinking about Send/Sync's soundness (rust-lang/nomicon#259) ## reference 10 commits in fd97729e2d82f8b08d68a31c9bfdf0c37a7fd542..e1abb17cd94cd5a8a374b48e1bc8134a2208ed48 2021-03-28 14:29:19 -0700 to 2021-04-07 08:09:48 -0700 - Update introduction.md (rust-lang/reference#1004) - clarify UB for raw ptr deref (rust-lang/reference#1000) - Update lint level documentation. (rust-lang/reference#998) - Add rustdoc to tool lints. (rust-lang/reference#997) - Link to ptr::addr_of on raw pointer docs (rust-lang/reference#993) - apply rust-lang/reference#950 to STYLE.md (rust-lang/reference#980) - Tuple Passover rust-lang/reference#2 (rust-lang/reference#990) - Fix typo in macros-by-example.md (rust-lang/reference#996) - Clarify object safety rules for methods striked from the vtable (rust-lang/reference#965) - Add const generic args to const contexts. (rust-lang/reference#995) ## rust-by-example 1 commits in 29d91f591c90dd18fdca6d23f1a9caf9c139d0d7..c80f0b09fc15b9251825343be910c08531938ab2 2021-03-23 09:03:39 -0300 to 2021-04-08 10:28:17 -0300 - fix compile bug with panic! (rust-lang/rust-by-example#1433) ## rustc-dev-guide 11 commits in 0687daa..a9bd2bb 2021-03-28 13:33:56 -0400 to 2021-04-09 18:12:21 -0400 - Improve formatting and update info in "method lookup" section - Change wording a bit: `module` => `crate` - fix typo (rust-lang/rustc-dev-guide#1107) - fix typo - Mention CI build of LLVM in build instruction - Fix rustdocs test command typo (rust-lang/rustc-dev-guide#1103) - Update the "LLVM updates" section - Fix a link about Rustdoc internals - Add quickstart for adding a new optimization (rust-lang/rustc-dev-guide#1094) - Add back example of {{cwd}} (rust-lang/rustc-dev-guide#1099) - Document test input normalization ## embedded-book 1 commits in d3f2ace94d51610cf3e3c265705bb8416d37f8e4..569c3391f5c0cc43433bc77831d17f8ff4d76602 2021-03-17 07:53:09 +0000 to 2021-04-07 08:32:11 +0000 - Make it easier to copy and paste example commands. (rust-embedded/book#289)
Update books ## nomicon 1 commits in 6fe476943afd53a9a6e91f38a6ea7bb48811d8ff..8551afbb2ca6f5ea37fe58380318b209785e4e02 2021-03-10 07:28:57 +0900 to 2021-04-01 21:58:50 +0900 - Add example of thinking about Send/Sync's soundness (rust-lang/nomicon#259) ## reference 10 commits in fd97729e2d82f8b08d68a31c9bfdf0c37a7fd542..e1abb17cd94cd5a8a374b48e1bc8134a2208ed48 2021-03-28 14:29:19 -0700 to 2021-04-07 08:09:48 -0700 - Update introduction.md (rust-lang/reference#1004) - clarify UB for raw ptr deref (rust-lang/reference#1000) - Update lint level documentation. (rust-lang/reference#998) - Add rustdoc to tool lints. (rust-lang/reference#997) - Link to ptr::addr_of on raw pointer docs (rust-lang/reference#993) - apply rust-lang/reference#950 to STYLE.md (rust-lang/reference#980) - Tuple Passover rust-lang/reference#2 (rust-lang/reference#990) - Fix typo in macros-by-example.md (rust-lang/reference#996) - Clarify object safety rules for methods striked from the vtable (rust-lang/reference#965) - Add const generic args to const contexts. (rust-lang/reference#995) ## rust-by-example 1 commits in 29d91f591c90dd18fdca6d23f1a9caf9c139d0d7..c80f0b09fc15b9251825343be910c08531938ab2 2021-03-23 09:03:39 -0300 to 2021-04-08 10:28:17 -0300 - fix compile bug with panic! (rust-lang/rust-by-example#1433) ## rustc-dev-guide 11 commits in 0687daa..a9bd2bb 2021-03-28 13:33:56 -0400 to 2021-04-09 18:12:21 -0400 - Improve formatting and update info in "method lookup" section - Change wording a bit: `module` => `crate` - fix typo (rust-lang/rustc-dev-guide#1107) - fix typo - Mention CI build of LLVM in build instruction - Fix rustdocs test command typo (rust-lang/rustc-dev-guide#1103) - Update the "LLVM updates" section - Fix a link about Rustdoc internals - Add quickstart for adding a new optimization (rust-lang/rustc-dev-guide#1094) - Add back example of {{cwd}} (rust-lang/rustc-dev-guide#1099) - Document test input normalization ## embedded-book 1 commits in d3f2ace94d51610cf3e3c265705bb8416d37f8e4..569c3391f5c0cc43433bc77831d17f8ff4d76602 2021-03-17 07:53:09 +0000 to 2021-04-07 08:32:11 +0000 - Make it easier to copy and paste example commands. (rust-embedded/book#289)
Update books ## nomicon 1 commits in 6fe476943afd53a9a6e91f38a6ea7bb48811d8ff..8551afbb2ca6f5ea37fe58380318b209785e4e02 2021-03-10 07:28:57 +0900 to 2021-04-01 21:58:50 +0900 - Add example of thinking about Send/Sync's soundness (rust-lang/nomicon#259) ## reference 10 commits in fd97729e2d82f8b08d68a31c9bfdf0c37a7fd542..e1abb17cd94cd5a8a374b48e1bc8134a2208ed48 2021-03-28 14:29:19 -0700 to 2021-04-07 08:09:48 -0700 - Update introduction.md (rust-lang/reference#1004) - clarify UB for raw ptr deref (rust-lang/reference#1000) - Update lint level documentation. (rust-lang/reference#998) - Add rustdoc to tool lints. (rust-lang/reference#997) - Link to ptr::addr_of on raw pointer docs (rust-lang/reference#993) - apply rust-lang/reference#950 to STYLE.md (rust-lang/reference#980) - Tuple Passover rust-lang/reference#2 (rust-lang/reference#990) - Fix typo in macros-by-example.md (rust-lang/reference#996) - Clarify object safety rules for methods striked from the vtable (rust-lang/reference#965) - Add const generic args to const contexts. (rust-lang/reference#995) ## rust-by-example 1 commits in 29d91f591c90dd18fdca6d23f1a9caf9c139d0d7..c80f0b09fc15b9251825343be910c08531938ab2 2021-03-23 09:03:39 -0300 to 2021-04-08 10:28:17 -0300 - fix compile bug with panic! (rust-lang/rust-by-example#1433) ## rustc-dev-guide 11 commits in 0687daa..a9bd2bb 2021-03-28 13:33:56 -0400 to 2021-04-09 18:12:21 -0400 - Improve formatting and update info in "method lookup" section - Change wording a bit: `module` => `crate` - fix typo (rust-lang/rustc-dev-guide#1107) - fix typo - Mention CI build of LLVM in build instruction - Fix rustdocs test command typo (rust-lang/rustc-dev-guide#1103) - Update the "LLVM updates" section - Fix a link about Rustdoc internals - Add quickstart for adding a new optimization (rust-lang/rustc-dev-guide#1094) - Add back example of {{cwd}} (rust-lang/rustc-dev-guide#1099) - Document test input normalization ## embedded-book 1 commits in d3f2ace94d51610cf3e3c265705bb8416d37f8e4..569c3391f5c0cc43433bc77831d17f8ff4d76602 2021-03-17 07:53:09 +0000 to 2021-04-07 08:32:11 +0000 - Make it easier to copy and paste example commands. (rust-embedded/book#289)
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