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bors 075c212849 Auto merge of #3776 - notriddle:drop-bounds, r=oli-obk 
Add a lint to warn on `T: Drop` bounds

**What it does:** Checks for generics with `std::ops::Drop` as bounds.

**Why is this bad?** `Drop` bounds do not really accomplish anything.
A type may have compiler-generated drop glue without implementing the
`Drop` trait itself. The `Drop` trait also only has one method,
`Drop::drop`, and that function is by fiat not callable in user code.
So there is really no use case for using `Drop` in trait bounds.

**Known problems:** None.

**Example:**
```rust
fn foo<T: Drop>() {}
```

Fixes #3773
2019-02-19 09:46:29 +00:00
..
author
Fixed breakage due to rust-lang/rust#57489
2019-01-20 12:21:30 +02:00
auxiliary
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crashes
Move run-pass tests to UI tests
2019-02-06 08:17:39 +01:00
missing_const_for_fn
Update various docs
2019-01-29 08:19:05 +01:00
absurd-extreme-comparisons.rs
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absurd-extreme-comparisons.stderr
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approx_const.rs
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approx_const.stderr
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arithmetic.rs
Actually check for constants.
2019-01-21 13:59:49 +01:00
arithmetic.stderr
Actually check for constants.
2019-01-21 13:59:49 +01:00
assertions_on_constants.rs
Add tests for assertion_on_constants macro check
2019-02-05 19:37:54 +01:00
assertions_on_constants.stderr
Add tests for assertion_on_constants macro check
2019-02-05 19:37:54 +01:00
assign_ops2.rs
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assign_ops2.stderr
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assign_ops.rs
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assign_ops.stderr
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attrs.rs
allow assertions_on_constants for collapsible_if and missing_test_files
2019-01-23 17:58:33 +03:00
attrs.stderr
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author.rs
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author.stdout
Fixed breakage due to rust-lang/rust#57489
2019-01-20 12:21:30 +02:00
bit_masks.rs
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bit_masks.stderr
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blacklisted_name.rs
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blacklisted_name.stderr
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block_in_if_condition.rs
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block_in_if_condition.stderr
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bool_comparison.rs
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bool_comparison.stderr
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booleans.rs
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booleans.stderr
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borrow_box.rs
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borrow_box.stderr
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box_vec.rs
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box_vec.stderr
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builtin-type-shadow.rs
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builtin-type-shadow.stderr
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bytecount.rs
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bytecount.stderr
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cast_alignment.rs
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cast_alignment.stderr
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cast_lossless_float.fixed
Prevent incorrect cast_lossless suggestion in const_fn
2019-01-26 10:57:15 +01:00
cast_lossless_float.rs
Prevent incorrect cast_lossless suggestion in const_fn
2019-01-26 10:57:15 +01:00
cast_lossless_float.stderr
Prevent incorrect cast_lossless suggestion in const_fn
2019-01-26 10:57:15 +01:00
cast_lossless_integer.fixed
Prevent incorrect cast_lossless suggestion in const_fn
2019-01-26 10:57:15 +01:00
cast_lossless_integer.rs
Prevent incorrect cast_lossless suggestion in const_fn
2019-01-26 10:57:15 +01:00
cast_lossless_integer.stderr
Prevent incorrect cast_lossless suggestion in const_fn
2019-01-26 10:57:15 +01:00
cast_ref_to_mut.rs
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cast_ref_to_mut.stderr
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cast_size.rs
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cast_size.stderr
Fix cast_sign_loss false positive
2019-01-31 06:32:29 +02:00
cast.rs
Fix cast_sign_loss false positive
2019-01-31 06:32:29 +02:00
cast.stderr
Fix cast_sign_loss false positive
2019-01-31 06:32:29 +02:00
cfg_attr_rustfmt.fixed
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cfg_attr_rustfmt.rs
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cfg_attr_rustfmt.stderr
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char_lit_as_u8.rs
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char_lit_as_u8.stderr
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checked_unwrap.rs
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checked_unwrap.stderr
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clone_on_copy_impl.rs
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clone_on_copy_mut.rs
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cmp_nan.rs
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cmp_nan.stderr
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cmp_null.rs
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cmp_null.stderr
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cmp_owned.rs
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cmp_owned.stderr
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collapsible_if.fixed
allow assertions_on_constants for collapsible_if and missing_test_files
2019-01-23 17:58:33 +03:00
collapsible_if.rs
allow assertions_on_constants for collapsible_if and missing_test_files
2019-01-23 17:58:33 +03:00
collapsible_if.stderr
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complex_types.rs
Fix ICE in vec_box lint and add run-rustfix
2019-02-01 18:18:45 +01:00
complex_types.stderr
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const_static_lifetime.rs
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const_static_lifetime.stderr
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copy_iterator.rs
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copy_iterator.stderr
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cstring.rs
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cstring.stderr
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cyclomatic_complexity_attr_used.rs
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cyclomatic_complexity_attr_used.stderr
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cyclomatic_complexity.rs
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cyclomatic_complexity.stderr
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dbg_macro.rs
add more test cases for dbg_macro rule
2019-02-02 04:54:51 +09:00
dbg_macro.stderr
use snippet for making a suggestion if possible
2019-02-03 18:28:42 +09:00
decimal_literal_representation.rs
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decimal_literal_representation.stderr
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default_trait_access.rs
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default_trait_access.stderr
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default_trait_access.stdout
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deprecated.rs
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deprecated.stderr
update test stderr
2019-01-27 13:46:22 +01:00
derive.rs
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derive.stderr
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diverging_sub_expression.rs
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diverging_sub_expression.stderr
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dlist.rs
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dlist.stderr
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doc.rs
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doc.stderr
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double_comparison.fixed
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double_comparison.rs
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double_comparison.stderr
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double_neg.rs
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double_neg.stderr
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double_parens.rs
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double_parens.stderr
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drop_bounds.rs
Fix formatting
2019-02-18 19:36:58 -07:00
drop_bounds.stderr
Fix formatting
2019-02-18 19:36:58 -07:00
drop_forget_copy.rs
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drop_forget_copy.stderr
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drop_forget_ref.rs
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drop_forget_ref.stderr
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duplicate_underscore_argument.rs
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duplicate_underscore_argument.stderr
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duration_subsec.fixed
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duration_subsec.rs
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duration_subsec.stderr
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duration_subsec.stdout
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else_if_without_else.rs
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else_if_without_else.stderr
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empty_enum.rs
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empty_enum.stderr
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empty_line_after_outer_attribute.rs
allow assertions_on_constants for collapsible_if and missing_test_files
2019-01-23 17:58:33 +03:00
empty_line_after_outer_attribute.stderr
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entry.rs
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entry.stderr
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enum_glob_use.rs
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enum_glob_use.stderr
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enum_variants.rs
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enum_variants.stderr
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enums_clike.rs
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enums_clike.stderr
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eq_op.rs
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eq_op.stderr
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erasing_op.rs
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erasing_op.stderr
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escape_analysis.rs
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escape_analysis.stderr
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eta.rs
test formatting
2019-02-10 21:23:04 +01:00
eta.stderr
test formatting
2019-02-10 21:23:04 +01:00
eval_order_dependence.rs
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eval_order_dependence.stderr
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excessive_precision.fixed
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excessive_precision.rs
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excessive_precision.stderr
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expect_fun_call.fixed
Fix expect_fun_call lint suggestions
2019-01-24 06:58:53 +02:00
expect_fun_call.rs
Fix expect_fun_call lint suggestions
2019-01-24 06:58:53 +02:00
expect_fun_call.stderr
Fix expect_fun_call lint suggestions
2019-01-24 06:58:53 +02:00
explicit_counter_loop.rs
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explicit_counter_loop.stderr
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explicit_write.fixed
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explicit_write.rs
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explicit_write.stderr
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fallible_impl_from.rs
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fallible_impl_from.stderr
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filter_methods.rs
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filter_methods.stderr
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float_cmp_const.rs
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float_cmp_const.stderr
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float_cmp.rs
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float_cmp.stderr
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fn_to_numeric_cast.rs
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fn_to_numeric_cast.stderr
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for_kv_map.rs
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for_kv_map.stderr
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for_loop_over_option_result.rs
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for_loop_over_option_result.stderr
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for_loop.rs
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for_loop.stderr
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for_loop.stdout
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format.rs
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format.stderr
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formatting.rs
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formatting.stderr
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functions_maxlines.rs
Updating to just warn for one test.
2019-02-01 13:21:19 -05:00
functions_maxlines.stderr
Fix test broken by removing comment.
2019-02-01 13:21:19 -05:00
functions.rs
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functions.stderr
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fxhash.rs
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fxhash.stderr
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get_unwrap.fixed
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get_unwrap.rs
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get_unwrap.stderr
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ice-2636.rs
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ice-2636.stderr
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ice-3717.rs
Add test for ICE #3717 fix
2019-02-17 01:50:31 +01:00
ice-3717.stderr
Add test for ICE #3717 fix
2019-02-17 01:50:31 +01:00
identity_conversion.rs
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identity_conversion.stderr
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identity_op.rs
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identity_op.stderr
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if_not_else.rs
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if_not_else.stderr
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if_same_then_else.rs
rustfmt
2019-02-10 10:48:24 +01:00
if_same_then_else.stderr
UI test cleanup: Extract match_same_arms tests
2019-02-10 10:19:24 +01:00
ifs_same_cond.rs
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ifs_same_cond.stderr
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impl.rs
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impl.stderr
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implicit_hasher.rs
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implicit_hasher.stderr
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implicit_return.rs
Fix implicit_return false positives.
2019-01-20 13:45:22 +01:00
implicit_return.stderr
Fix implicit_return false positives.
2019-01-20 13:45:22 +01:00
inconsistent_digit_grouping.fixed
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inconsistent_digit_grouping.rs
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inconsistent_digit_grouping.stderr
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indexing_slicing.rs
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indexing_slicing.stderr
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infallible_destructuring_match.fixed
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infallible_destructuring_match.rs
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infallible_destructuring_match.stderr
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infinite_iter.rs
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infinite_iter.stderr
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infinite_loop.rs
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infinite_loop.stderr
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inline_fn_without_body.rs
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inline_fn_without_body.stderr
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int_plus_one.rs
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int_plus_one.stderr
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into_iter_on_ref.fixed
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into_iter_on_ref.rs
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into_iter_on_ref.stderr
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invalid_ref.rs
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invalid_ref.stderr
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invalid_upcast_comparisons.rs
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invalid_upcast_comparisons.stderr
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issue_2356.rs
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issue_2356.stderr
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issue-3145.rs
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issue-3145.stderr
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item_after_statement.rs
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item_after_statement.stderr
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iter_skip_next.rs
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iter_skip_next.stderr
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large_digit_groups.fixed
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large_digit_groups.rs
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large_digit_groups.stderr
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large_enum_variant.rs
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large_enum_variant.stderr
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len_zero.rs
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len_zero.stderr
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let_if_seq.rs
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let_if_seq.stderr
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let_return.rs
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let_return.stderr
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let_unit.rs
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let_unit.stderr
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lifetimes.rs
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lifetimes.stderr
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lint_without_lint_pass.rs
rustup https://github.com/rust-lang/rust/pull/57726
2019-01-27 01:42:34 +01:00
lint_without_lint_pass.stderr
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literals.rs
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literals.stderr
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map_clone.fixed
removing redundant closures in the whole project
2019-02-10 13:35:44 +01:00
map_clone.rs
removing redundant closures in the whole project
2019-02-10 13:35:44 +01:00
map_clone.stderr
removing redundant closures in the whole project
2019-02-10 13:35:44 +01:00
map_flatten.rs
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map_flatten.stderr
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map_unit_fn.rs
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match_bool.rs
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match_bool.stderr
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match_overlapping_arm.rs
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match_overlapping_arm.stderr
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match_same_arms.rs
UI test cleanup: Rename copies.rs to match_same_arms.rs
2019-02-10 10:20:28 +01:00
match_same_arms.stderr
UI test cleanup: Rename copies.rs to match_same_arms.rs
2019-02-10 10:20:28 +01:00
matches.rs
Adding lint for too many lines.
2019-02-01 13:21:19 -05:00
matches.stderr
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mem_discriminant.rs
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mem_discriminant.stderr
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mem_forget.rs
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mem_forget.stderr
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mem_replace.fixed
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mem_replace.rs
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mem_replace.stderr
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methods.rs
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methods.stderr
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min_max.rs
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min_max.stderr
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missing_inline.rs
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missing_inline.stderr
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missing-doc.rs
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missing-doc.stderr
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module_inception.rs
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module_inception.stderr
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module_name_repetitions.rs
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module_name_repetitions.stderr
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modulo_one.rs
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modulo_one.stderr
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mut_from_ref.rs
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mut_from_ref.stderr
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mut_mut.rs
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mut_mut.stderr
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mut_range_bound.rs
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mut_range_bound.stderr
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mut_reference.rs
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mut_reference.stderr
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mutex_atomic.rs
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mutex_atomic.stderr
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my_lint.rs
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needless_bool.rs
needless bool lint suggestion is wrapped in brackets if it is an "else" clause of an "if-else" statement
2019-01-20 16:15:00 +01:00
needless_bool.stderr
needless bool lint suggestion is wrapped in brackets if it is an "else" clause of an "if-else" statement
2019-01-20 16:15:00 +01:00
needless_borrow.rs
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needless_borrow.stderr
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needless_borrowed_ref.rs
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needless_borrowed_ref.stderr
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needless_collect.rs
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needless_collect.stderr
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needless_continue.rs
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needless_continue.stderr
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needless_pass_by_value_proc_macro.rs
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needless_pass_by_value.rs
Fix ICE in needless_pass_by_value lint
2019-02-06 09:18:35 +01:00
needless_pass_by_value.stderr
Fix ICE in needless_pass_by_value lint
2019-02-06 09:18:35 +01:00
needless_range_loop.rs
Fix needless_range_loop bad suggestion
2019-02-11 07:03:12 +02:00
needless_range_loop.stderr
Fix needless_range_loop bad suggestion
2019-02-11 07:03:12 +02:00
needless_return.rs
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needless_return.stderr
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needless_update.rs
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needless_update.stderr
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neg_cmp_op_on_partial_ord.rs
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neg_cmp_op_on_partial_ord.stderr
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neg_multiply.rs
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neg_multiply.stderr
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never_loop.rs
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never_loop.stderr
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new_ret_no_self.rs
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new_ret_no_self.stderr
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new_without_default.rs
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new_without_default.stderr
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no_effect.rs
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no_effect.stderr
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non_copy_const.rs
Remove tests for deprecated items
2019-01-28 10:17:04 +01:00
non_copy_const.stderr
Remove tests for deprecated items
2019-01-28 10:17:04 +01:00
non_expressive_names.rs
UI test cleanup: Extract similar_names tests
2019-02-10 09:48:31 +01:00
non_expressive_names.stderr
UI test cleanup: Extract similar_names tests
2019-02-10 09:48:31 +01:00
ok_expect.rs
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ok_expect.stderr
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ok_if_let.rs
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ok_if_let.stderr
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op_ref.rs
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op_ref.stderr
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open_options.rs
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open_options.stderr
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option_map_unit_fn.rs
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option_map_unit_fn.stderr
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option_option.rs
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option_option.stderr
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overflow_check_conditional.rs
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overflow_check_conditional.stderr
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panic_unimplemented.rs
allow assertions_on_constants for collapsible_if and missing_test_files
2019-01-23 17:58:33 +03:00
panic_unimplemented.stderr
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partialeq_ne_impl.rs
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partialeq_ne_impl.stderr
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patterns.rs
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patterns.stderr
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precedence.fixed
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precedence.rs
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precedence.stderr
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print_literal.rs
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print_literal.stderr
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print_with_newline.rs
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print_with_newline.stderr
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print.rs
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print.stderr
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println_empty_string.fixed
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println_empty_string.rs
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println_empty_string.stderr
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ptr_arg.rs
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ptr_arg.stderr
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ptr_offset_with_cast.fixed
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ptr_offset_with_cast.rs
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ptr_offset_with_cast.stderr
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question_mark.rs
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question_mark.stderr
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range_plus_minus_one.rs
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range_plus_minus_one.stderr
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range.rs
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range.stderr
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redundant_clone.rs
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redundant_clone.stderr
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redundant_closure_call.rs
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redundant_closure_call.stderr
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redundant_field_names.fixed
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redundant_field_names.rs
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redundant_field_names.stderr
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redundant_pattern_matching.rs
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redundant_pattern_matching.stderr
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reference.rs
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reference.stderr
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regex.rs
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regex.stderr
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rename.rs
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rename.stderr
update test stderr
2019-01-27 13:46:22 +01:00
replace_consts.fixed
Atomics constants are now handled by the deprecation lint
2019-01-28 10:10:27 +01:00
replace_consts.rs
Atomics constants are now handled by the deprecation lint
2019-01-28 10:10:27 +01:00
replace_consts.stderr
Atomics constants are now handled by the deprecation lint
2019-01-28 10:10:27 +01:00
result_map_unit_fn.rs
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result_map_unit_fn.stderr
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result_map_unwrap_or_else.rs
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result_map_unwrap_or_else.stderr
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serde.rs
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serde.stderr
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shadow.rs
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shadow.stderr
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short_circuit_statement.rs
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short_circuit_statement.stderr
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similar_names.rs
UI test cleanup: Extract similar_names tests
2019-02-10 09:48:31 +01:00
similar_names.stderr
UI test cleanup: Extract similar_names tests
2019-02-10 09:48:31 +01:00
single_char_pattern.fixed
Rustup: unused trim result
2019-01-31 08:27:04 +01:00
single_char_pattern.rs
Rustup: unused trim result
2019-01-31 08:27:04 +01:00
single_char_pattern.stderr
Rustup: unused trim result
2019-01-31 08:27:04 +01:00
single_match_else.rs
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single_match_else.stderr
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single_match.rs
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single_match.stderr
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slow_vector_initialization.rs
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slow_vector_initialization.stderr
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slow_vector_initialization.stdout
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starts_ends_with.fixed
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starts_ends_with.rs
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starts_ends_with.stderr
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string_extend.fixed
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string_extend.rs
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string_extend.stderr
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strings.rs
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strings.stderr
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suspicious_arithmetic_impl.rs
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suspicious_arithmetic_impl.stderr
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swap.rs
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swap.stderr
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temporary_assignment.rs
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temporary_assignment.stderr
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toplevel_ref_arg.rs
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toplevel_ref_arg.stderr
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trailing_zeros.rs
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trailing_zeros.stderr
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trailing_zeros.stdout
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transmute_32bit.rs
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transmute_64bit.rs
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transmute_64bit.stderr
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transmute.rs
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transmute.stderr
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trivially_copy_pass_by_ref.rs
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trivially_copy_pass_by_ref.stderr
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ty_fn_sig.rs
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ty_fn_sig.stderr
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types.fixed
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types.rs
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types.stderr
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unicode.rs
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unicode.stderr
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unit_arg.fixed
Fix unit_arg false positive
2019-01-29 07:22:08 +02:00
unit_arg.rs
Fix unit_arg false positive
2019-01-29 07:22:08 +02:00
unit_arg.stderr
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unit_cmp.rs
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unit_cmp.stderr
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unknown_clippy_lints.rs
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unknown_clippy_lints.stderr
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unnecessary_clone.rs
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unnecessary_clone.stderr
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unnecessary_filter_map.rs
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unnecessary_filter_map.stderr
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unnecessary_fold.fixed
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unnecessary_fold.rs
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unnecessary_fold.stderr
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unnecessary_operation.rs
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unnecessary_operation.stderr
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unnecessary_ref.fixed
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unnecessary_ref.rs
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unnecessary_ref.stderr
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unneeded_field_pattern.rs
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unneeded_field_pattern.stderr
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unreadable_literal.fixed
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unreadable_literal.rs
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unreadable_literal.stderr
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unsafe_removed_from_name.rs
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unsafe_removed_from_name.stderr
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unused_io_amount.rs
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unused_io_amount.stderr
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unused_labels.rs
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unused_labels.stderr
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unused_lt.rs
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unused_lt.stderr
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unused_unit.rs
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unused_unit.stderr
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unwrap_or.rs
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unwrap_or.stderr
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unwrap_or.stdout
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update-all-references.sh
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update-references.sh
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use_self.fixed
Added rustfix to the test.
2019-01-22 15:16:54 +01:00
use_self.rs
Added rustfix to the test.
2019-01-22 15:16:54 +01:00
use_self.stderr
Added rustfix to the test.
2019-01-22 15:16:54 +01:00
used_underscore_binding.rs
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used_underscore_binding.stderr
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useful_asref.rs
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useless_asref.rs
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useless_asref.stderr
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useless_attribute.rs
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useless_attribute.stderr
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vec_box_sized.fixed
Fix ICE in vec_box lint and add run-rustfix
2019-02-01 18:18:45 +01:00
vec_box_sized.rs
Fix ICE in vec_box lint and add run-rustfix
2019-02-01 18:18:45 +01:00
vec_box_sized.stderr
Fix ICE in vec_box lint and add run-rustfix
2019-02-01 18:18:45 +01:00
vec.fixed
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vec.rs
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vec.stderr
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while_loop.rs
Fix bad while_let_on_iterator suggestion.
2019-01-19 11:36:27 +02:00
while_loop.stderr
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wildcard_enum_match_arm.rs
Restore tests
2019-02-18 22:56:43 +00:00
wildcard_enum_match_arm.stderr
Restore tests
2019-02-18 22:56:43 +00:00
write_literal.rs
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write_literal.stderr
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write_with_newline.rs
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write_with_newline.stderr
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writeln_empty_string.fixed
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writeln_empty_string.rs
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writeln_empty_string.stderr
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wrong_self_convention.rs
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wrong_self_convention.stderr
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zero_div_zero.rs
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zero_div_zero.stderr
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zero_ptr.rs
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zero_ptr.stderr
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