Migrate to eprint/eprintln macros where appropriate. #44822

frewsxcv · 2017-09-25T04:25:33Z

No description provided.

kennytm · 2017-09-25T09:05:45Z

src/librustdoc/markdown.rs

-            &mut io::stderr(),
-            "rustdoc: invalid markdown file: no initial lines starting with `# ` or `%`"
-        );
+        eprintln("rustdoc: invalid markdown file: no initial lines starting with `# ` or `%`");


Missing !.

[00:34:43] error[E0423]: expected function, found macro `eprintln` [00:34:43] --> /checkout/src/librustdoc/markdown.rs:84:9 [00:34:43] | [00:34:43] 84 | eprintln("rustdoc: invalid markdown file: no initial lines starting with `# ` or `%`"); [00:34:43] | ^^^^^^^^ did you mean `eprintln!(...)`?

kennytm · 2017-09-25T09:06:56Z

src/librustdoc/externalfiles.rs

-                             "error reading `{}`: not UTF-8",
-                             file_path.display());
+            let _ = eprintln!("error reading `{}`: not UTF-8",
+                              file_path.display());


Remove the let _ = . (Same for a few lines above)

Also, the use std::io; is no longer needed.

[00:34:44] error: unused import: `std::io` [00:34:44] --> /checkout/src/librustdoc/externalfiles.rs:13:5 [00:34:44] | [00:34:44] 13 | use std::io; [00:34:44] | ^^^^^^^ [00:34:44] |

kennytm · 2017-09-25T09:07:41Z

src/librustdoc/markdown.rs

-            let _ = writeln!(&mut io::stderr(),
-                             "rustdoc: {}: {}",
-                             output.display(), e);
+            let _ = eprintln!("rustdoc: {}: {}", output.display(), e);


Remove let _ = .

kennytm · 2017-09-25T09:09:04Z

src/librustdoc/markdown.rs

-                             "rustdoc: cannot write to `{}`: {}",
-                             output.display(), e);
+            let _ = eprintln!("rustdoc: cannot write to `{}`: {}",
+                              output.display(), e);


Remove let _ =

kennytm · 2017-09-25T09:09:22Z

src/librustdoc/test.rs

-                                  in future versions of rustdoc. Please ensure this code block is \
-                                  a runnable test, or use the `ignore` directive.",
-                                 name);
+                let _ = eprintln!("WARNING: {} Code block is not currently run as a test, but will \


Remove let _ =

kennytm · 2017-09-25T09:11:22Z

src/librustdoc/markdown.rs

@@ -10,8 +10,6 @@

 use std::default::Default;
 use std::fs::File;
-use std::io::prelude::*;
-use std::io;


The std::io::Write trait is still needed somewhere.

[00:34:47] error[E0599]: no method named `write_fmt` found for type `&mut std::fs::File` in the current scope [00:34:47] --> /checkout/src/librustdoc/markdown.rs:97:15 [00:34:47] | [00:34:47] 97 | let err = write!( [00:34:47] | _______________^ [00:34:47] 98 | | &mut out, [00:34:47] 99 | | r#"<!DOCTYPE html> [00:34:47] 100 | | <html lang="en"> [00:34:47] ... | [00:34:47] 129 | | after_content = external_html.after_content, [00:34:47] 130 | | ); [00:34:47] | |_________^ [00:34:47] | [00:34:47] = help: items from traits can only be used if the trait is in scope [00:34:47] = note: the following trait is implemented but not in scope, perhaps add a `use` for it: [00:34:47] candidate #1: `use std::io::Write;` [00:34:47] = note: this error originates in a macro outside of the current crate

carols10cents · 2017-09-25T15:21:54Z

r? @nrc

kennytm · 2017-09-25T16:07:15Z

src/librustdoc/externalfiles.rs

@@ -9,8 +9,6 @@
 // except according to those terms.

 use std::fs::File;
-use std::io::prelude::*;
-use std::io;


Looks like this needs std::io::Read as well...

[00:33:33] error[E0599]: no method named `read_to_end` found for type `std::fs::File` in the current scope [00:33:33] --> /checkout/src/librustdoc/externalfiles.rs:69:43 [00:33:33] | [00:33:33] 69 | .and_then(|mut f| f.read_to_end(&mut contents)); [00:33:33] | ^^^^^^^^^^^ [00:33:33] | [00:33:33] = help: items from traits can only be used if the trait is in scope [00:33:33] = note: the following trait is implemented but not in scope, perhaps add a `use` for it: [00:33:33] candidate #1: `use std::io::Read;`

kennytm · 2017-09-26T15:38:00Z

src/test/run-pass/backtrace-debuginfo.rs

@@ -163,7 +161,7 @@ fn main() {
    let args: Vec<String> = env::args().collect();
    if args.len() >= 2 {
        let case = args[1].parse().unwrap();
-        writeln!(&mut io::stderr(), "test case {}", case).unwrap();
+        eprintln!("test case {}", case).unwrap();


Unnecessary unwrap().

[00:47:00] ---- [run-pass] run-pass/backtrace-debuginfo.rs stdout ---- [00:47:00] [00:47:00] error: compilation failed! [00:47:00] status: exit code: 101 [00:47:00] command: "/checkout/obj/build/x86_64-unknown-linux-gnu/stage2/bin/rustc" "/checkout/src/test/run-pass/backtrace-debuginfo.rs" "-L" "/checkout/obj/build/x86_64-unknown-linux-gnu/test/run-pass" "--target=x86_64-unknown-linux-gnu" "-C" "prefer-dynamic" "-o" "/checkout/obj/build/x86_64-unknown-linux-gnu/test/run-pass/backtrace-debuginfo.stage2-x86_64-unknown-linux-gnu" "-Crpath" "-O" "-Lnative=/checkout/obj/build/x86_64-unknown-linux-gnu/native/rust-test-helpers" "-g" "-Cllvm-args=-enable-tail-merge=0" "-L" "/checkout/obj/build/x86_64-unknown-linux-gnu/test/run-pass/backtrace-debuginfo.stage2-x86_64-unknown-linux-gnu.run-pass.libaux" [00:47:00] stdout: [00:47:00] ------------------------------------------ [00:47:00] [00:47:00] ------------------------------------------ [00:47:00] stderr: [00:47:00] ------------------------------------------ [00:47:00] error[E0599]: no method named `unwrap` found for type `()` in the current scope [00:47:00] --> /checkout/src/test/run-pass/backtrace-debuginfo.rs:164:41 [00:47:00] | [00:47:00] 164 | eprintln!("test case {}", case).unwrap(); [00:47:00] | ^^^^^^ [00:47:00] [00:47:00] error: aborting due to previous error [00:47:00] [00:47:00] [00:47:00] ------------------------------------------ [00:47:00] [00:47:00] thread '[run-pass] run-pass/backtrace-debuginfo.rs' panicked at 'explicit panic', /checkout/src/tools/compiletest/src/runtest.rs:2433:8 [00:47:00] note: Run with `RUST_BACKTRACE=1` for a backtrace. [00:47:00] [00:47:00] [00:47:00] failures: [00:47:00] [run-pass] run-pass/backtrace-debuginfo.rs [00:47:00] [00:47:00] test result: FAILED. 2761 passed; 1 failed; 8 ignored; 0 measured; 0 filtered out

frewsxcv · 2017-09-27T03:08:51Z

finally got a green checkmark here

ollie27 · 2017-09-27T17:28:57Z

src/tools/tidy/src/lib.rs

        *$bad = true;
-        write!(::std::io::stderr(), "tidy error: ").expect("could not write to stderr");
-        writeln!(::std::io::stderr(), $fmt, $($arg)*).expect("could not write to stderr");
+        eprint!("some tidy checks failed");


Did you intent to change this from "tidy error: " to "some tidy checks failed"?

Nope, good catch! Fixed in the latest force push

shepmaster · 2017-10-06T18:33:44Z

Hey, @nrc, will you have a chance to get to this soon?

shepmaster · 2017-10-06T18:54:10Z

A birdie told me that @nrc is on leave for a bit, so let's pick someone from the libs team... r? @Kimundi

Kimundi · 2017-10-09T09:59:44Z

@bors: r+

bors · 2017-10-09T09:59:45Z

📌 Commit 8ef5447 has been approved by Kimundi

michaelwoerister · 2017-10-09T10:04:33Z

@frewsxcv Did you test if the instances that end up in rustc actually print something? I never had any luck with that. I suspect that libterm somehow interferes with stderr. Then again, looking at the changes, it probably didn't work before either in those cases.

bors · 2017-10-10T02:54:21Z

⌛ Testing commit 8ef5447 with merge 13ae187...

Migrate to eprint/eprintln macros where appropriate. None

bors · 2017-10-10T06:29:21Z

☀️ Test successful - status-appveyor, status-travis
Approved by: Kimundi
Pushing 13ae187 to master...

frewsxcv force-pushed the frewsxcv-eprintln branch 2 times, most recently from aac119a to f64df80 Compare September 25, 2017 04:46

killercup mentioned this pull request Sep 25, 2017

Suggest eprintln!(…) instead of writeln!(io::stderr(), …) rust-lang/rust-clippy#2083

Closed

kennytm reviewed Sep 25, 2017

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frewsxcv force-pushed the frewsxcv-eprintln branch 2 times, most recently from c201487 to f48c58e Compare September 25, 2017 11:13

rust-highfive assigned nrc Sep 25, 2017

carols10cents added the S-waiting-on-review Status: Awaiting review from the assignee but also interested parties. label Sep 25, 2017

kennytm reviewed Sep 25, 2017

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frewsxcv force-pushed the frewsxcv-eprintln branch from f48c58e to cb214c4 Compare September 26, 2017 12:02

kennytm reviewed Sep 26, 2017

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arielb1 added S-waiting-on-author Status: This is awaiting some action (such as code changes or more information) from the author. and removed S-waiting-on-review Status: Awaiting review from the assignee but also interested parties. labels Sep 26, 2017

frewsxcv force-pushed the frewsxcv-eprintln branch 2 times, most recently from 00a378e to db5de84 Compare September 27, 2017 01:34

ollie27 reviewed Sep 27, 2017

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Migrate to eprint/eprintln macros where appropriate.

8ef5447

frewsxcv force-pushed the frewsxcv-eprintln branch from db5de84 to 8ef5447 Compare September 28, 2017 15:38

carols10cents added S-waiting-on-review Status: Awaiting review from the assignee but also interested parties. and removed S-waiting-on-author Status: This is awaiting some action (such as code changes or more information) from the author. labels Oct 2, 2017

rust-highfive assigned Kimundi and unassigned nrc Oct 6, 2017

bors added a commit that referenced this pull request Oct 10, 2017

Auto merge of #44822 - frewsxcv:frewsxcv-eprintln, r=Kimundi

13ae187

Migrate to eprint/eprintln macros where appropriate. None

bors merged commit 8ef5447 into rust-lang:master Oct 10, 2017

frewsxcv deleted the frewsxcv-eprintln branch October 10, 2017 12:50

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Migrate to eprint/eprintln macros where appropriate. #44822

Migrate to eprint/eprintln macros where appropriate. #44822

frewsxcv commented Sep 25, 2017

kennytm Sep 25, 2017

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kennytm Sep 25, 2017

kennytm Sep 25, 2017

kennytm Sep 25, 2017

kennytm Sep 25, 2017

carols10cents commented Sep 25, 2017

kennytm Sep 25, 2017

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frewsxcv commented Sep 27, 2017

ollie27 Sep 27, 2017

frewsxcv Sep 28, 2017

shepmaster commented Oct 6, 2017

shepmaster commented Oct 6, 2017

Kimundi commented Oct 9, 2017

bors commented Oct 9, 2017

michaelwoerister commented Oct 9, 2017

bors commented Oct 10, 2017

bors commented Oct 10, 2017

Migrate to eprint/eprintln macros where appropriate. #44822

Migrate to eprint/eprintln macros where appropriate. #44822

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frewsxcv commented Sep 25, 2017

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carols10cents commented Sep 25, 2017

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