rust/tests/ui/open_options.stderr

error: file opened with `truncate` and `read`
  --> $DIR/open_options.rs:6:5
   |
LL |     OpenOptions::new().read(true).truncate(true).open("foo.txt");
   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
   |
   = note: `-D clippy::nonsensical-open-options` implied by `-D warnings`
   = help: to override `-D warnings` add `#[allow(clippy::nonsensical_open_options)]`

error: file opened with `append` and `truncate`
  --> $DIR/open_options.rs:9:5
   |
LL |     OpenOptions::new().append(true).truncate(true).open("foo.txt");
   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

error: the method `read` is called more than once
  --> $DIR/open_options.rs:12:35
   |
LL |     OpenOptions::new().read(true).read(false).open("foo.txt");
   |                                   ^^^^^^^^^^^

error: the method `create` is called more than once
  --> $DIR/open_options.rs:14:37
   |
LL |     OpenOptions::new().create(true).create(false).open("foo.txt");
   |                                     ^^^^^^^^^^^^^

error: file opened with `create`, but `truncate` behavior not defined
  --> $DIR/open_options.rs:14:24
   |
LL |     OpenOptions::new().create(true).create(false).open("foo.txt");
   |                        ^^^^^^^^^^^^
   |
   = help: if you intend to overwrite an existing file entirely, call `.truncate(true)`. if you instead know that you may want to keep some parts of the old file, call `.truncate(false)`
   = note: `-D clippy::suspicious-open-options` implied by `-D warnings`
   = help: to override `-D warnings` add `#[allow(clippy::suspicious_open_options)]`

error: the method `write` is called more than once
  --> $DIR/open_options.rs:16:36
   |
LL |     OpenOptions::new().write(true).write(false).open("foo.txt");
   |                                    ^^^^^^^^^^^^

error: the method `append` is called more than once
  --> $DIR/open_options.rs:18:37
   |
LL |     OpenOptions::new().append(true).append(false).open("foo.txt");
   |                                     ^^^^^^^^^^^^^

error: the method `truncate` is called more than once
  --> $DIR/open_options.rs:20:39
   |
LL |     OpenOptions::new().truncate(true).truncate(false).open("foo.txt");
   |                                       ^^^^^^^^^^^^^^^

error: file opened with `create`, but `truncate` behavior not defined
  --> $DIR/open_options.rs:22:24
   |
LL |     OpenOptions::new().create(true).open("foo.txt");
   |                        ^^^^^^^^^^^^
   |
   = help: if you intend to overwrite an existing file entirely, call `.truncate(true)`. if you instead know that you may want to keep some parts of the old file, call `.truncate(false)`

error: aborting due to 9 previous errors