Update existing tests with more precise error messages

19 files changed, 102 insertions, 76 deletions

diff --git a/src/test/run-pass/array-slice-vec/vec-matching-autoslice.stderr b/src/test/run-pass/array-slice-vec/vec-matching-autoslice.stderr
new file mode 100644
index 00000000000..fd811e8083c
--- /dev/null
+++ b/src/test/run-pass/array-slice-vec/vec-matching-autoslice.stderr
@@ -0,0 +1,8 @@
+warning: unreachable pattern
+  --> $DIR/vec-matching-autoslice.rs:31:9
+   |
+LL |         ([_, _], _) => panic!(),
+   |         ^^^^^^^^^^^
+   |
+   = note: #[warn(unreachable_patterns)] on by default
+
diff --git a/src/test/run-pass/binding/match-range.stderr b/src/test/run-pass/binding/match-range.stderr
new file mode 100644
index 00000000000..f402a98af49
--- /dev/null
+++ b/src/test/run-pass/binding/match-range.stderr
@@ -0,0 +1,20 @@
+warning: unreachable pattern
+  --> $DIR/match-range.rs:47:7
+   |
+LL |       _ => panic!("should match float range")
+   |       ^
+   |
+   = note: #[warn(unreachable_patterns)] on by default
+
+warning: unreachable pattern
+  --> $DIR/match-range.rs:55:9
+   |
+LL |         _ => {},
+   |         ^
+
+warning: unreachable pattern
+  --> $DIR/match-range.rs:59:9
+   |
+LL |         _ => panic!("should match the range start"),
+   |         ^
+
diff --git a/src/test/run-pass/issues/issue-15881-model-lexer-dotdotdot.stderr b/src/test/run-pass/issues/issue-15881-model-lexer-dotdotdot.stderr
new file mode 100644
index 00000000000..41b4130acf4
--- /dev/null
+++ b/src/test/run-pass/issues/issue-15881-model-lexer-dotdotdot.stderr
@@ -0,0 +1,8 @@
+warning: unreachable pattern
+  --> $DIR/issue-15881-model-lexer-dotdotdot.rs:41:7
+   |
+LL |       _ => panic!("should match float range")
+   |       ^
+   |
+   = note: #[warn(unreachable_patterns)] on by default
+
diff --git a/src/test/run-pass/issues/issue-7222.stderr b/src/test/run-pass/issues/issue-7222.stderr
new file mode 100644
index 00000000000..1b231f2da39
--- /dev/null
+++ b/src/test/run-pass/issues/issue-7222.stderr
@@ -0,0 +1,8 @@
+warning: unreachable pattern
+  --> $DIR/issue-7222.rs:20:9
+   |
+LL |         _ => ()
+   |         ^
+   |
+   = note: #[warn(unreachable_patterns)] on by default
+
diff --git a/src/test/ui/consts/const-match-check.eval1.stderr b/src/test/ui/consts/const-match-check.eval1.stderr
index 3caf1491aba..703453e6bdd 100644
--- a/src/test/ui/consts/const-match-check.eval1.stderr
+++ b/src/test/ui/consts/const-match-check.eval1.stderr
@@ -1,8 +1,8 @@
-error[E0005]: refutable pattern in local binding: `_` not covered
+error[E0005]: refutable pattern in local binding: `-2147483648i32..=-1i32` not covered
   --> $DIR/const-match-check.rs:35:15
    |
 LL |     A = { let 0 = 0; 0 },
-   |               ^ pattern `_` not covered
+   |               ^ pattern `-2147483648i32..=-1i32` not covered
 
 error: aborting due to previous error
 
diff --git a/src/test/ui/consts/const-match-check.eval2.stderr b/src/test/ui/consts/const-match-check.eval2.stderr
index de85d4d73db..6caff93e642 100644
--- a/src/test/ui/consts/const-match-check.eval2.stderr
+++ b/src/test/ui/consts/const-match-check.eval2.stderr
@@ -1,8 +1,8 @@
-error[E0005]: refutable pattern in local binding: `_` not covered
+error[E0005]: refutable pattern in local binding: `-2147483648i32..=-1i32` not covered
   --> $DIR/const-match-check.rs:41:24
    |
 LL |     let x: [i32; { let 0 = 0; 0 }] = [];
-   |                        ^ pattern `_` not covered
+   |                        ^ pattern `-2147483648i32..=-1i32` not covered
 
 error: aborting due to previous error
 
diff --git a/src/test/ui/consts/const-match-check.matchck.stderr b/src/test/ui/consts/const-match-check.matchck.stderr
index bbf1169c577..9e45045d27e 100644
--- a/src/test/ui/consts/const-match-check.matchck.stderr
+++ b/src/test/ui/consts/const-match-check.matchck.stderr
@@ -1,26 +1,26 @@
-error[E0005]: refutable pattern in local binding: `_` not covered
+error[E0005]: refutable pattern in local binding: `-2147483648i32..=-1i32` not covered
   --> $DIR/const-match-check.rs:14:22
    |
 LL | const X: i32 = { let 0 = 0; 0 };
-   |                      ^ pattern `_` not covered
+   |                      ^ pattern `-2147483648i32..=-1i32` not covered
 
-error[E0005]: refutable pattern in local binding: `_` not covered
+error[E0005]: refutable pattern in local binding: `-2147483648i32..=-1i32` not covered
   --> $DIR/const-match-check.rs:18:23
    |
 LL | static Y: i32 = { let 0 = 0; 0 };
-   |                       ^ pattern `_` not covered
+   |                       ^ pattern `-2147483648i32..=-1i32` not covered
 
-error[E0005]: refutable pattern in local binding: `_` not covered
+error[E0005]: refutable pattern in local binding: `-2147483648i32..=-1i32` not covered
   --> $DIR/const-match-check.rs:23:26
    |
 LL |     const X: i32 = { let 0 = 0; 0 };
-   |                          ^ pattern `_` not covered
+   |                          ^ pattern `-2147483648i32..=-1i32` not covered
 
-error[E0005]: refutable pattern in local binding: `_` not covered
+error[E0005]: refutable pattern in local binding: `-2147483648i32..=-1i32` not covered
   --> $DIR/const-match-check.rs:29:26
    |
 LL |     const X: i32 = { let 0 = 0; 0 };
-   |                          ^ pattern `_` not covered
+   |                          ^ pattern `-2147483648i32..=-1i32` not covered
 
 error: aborting due to 4 previous errors
 
diff --git a/src/test/ui/consts/const-pattern-irrefutable.rs b/src/test/ui/consts/const-pattern-irrefutable.rs
index af0b95e002d..278864d6de9 100644
--- a/src/test/ui/consts/const-pattern-irrefutable.rs
+++ b/src/test/ui/consts/const-pattern-irrefutable.rs
@@ -19,8 +19,8 @@ use foo::d;
 const a: u8 = 2;
 
 fn main() {
-    let a = 4; //~ ERROR refutable pattern in local binding: `_` not covered
-    let c = 4; //~ ERROR refutable pattern in local binding: `_` not covered
-    let d = 4; //~ ERROR refutable pattern in local binding: `_` not covered
+    let a = 4; //~ ERROR refutable pattern in local binding: `0u8..=1u8` not covered
+    let c = 4; //~ ERROR refutable pattern in local binding: `0u8..=1u8` not covered
+    let d = 4; //~ ERROR refutable pattern in local binding: `0u8..=1u8` not covered
     fn f() {} // Check that the `NOTE`s still work with an item here (c.f. issue #35115).
 }
diff --git a/src/test/ui/consts/const-pattern-irrefutable.stderr b/src/test/ui/consts/const-pattern-irrefutable.stderr
index 6d5738f3328..d9ad16cd0e8 100644
--- a/src/test/ui/consts/const-pattern-irrefutable.stderr
+++ b/src/test/ui/consts/const-pattern-irrefutable.stderr
@@ -1,19 +1,19 @@
-error[E0005]: refutable pattern in local binding: `_` not covered
+error[E0005]: refutable pattern in local binding: `0u8..=1u8` not covered
   --> $DIR/const-pattern-irrefutable.rs:22:9
    |
-LL |     let a = 4; //~ ERROR refutable pattern in local binding: `_` not covered
+LL |     let a = 4; //~ ERROR refutable pattern in local binding: `0u8..=1u8` not covered
    |         ^ interpreted as a constant pattern, not new variable
 
-error[E0005]: refutable pattern in local binding: `_` not covered
+error[E0005]: refutable pattern in local binding: `0u8..=1u8` not covered
   --> $DIR/const-pattern-irrefutable.rs:23:9
    |
-LL |     let c = 4; //~ ERROR refutable pattern in local binding: `_` not covered
+LL |     let c = 4; //~ ERROR refutable pattern in local binding: `0u8..=1u8` not covered
    |         ^ interpreted as a constant pattern, not new variable
 
-error[E0005]: refutable pattern in local binding: `_` not covered
+error[E0005]: refutable pattern in local binding: `0u8..=1u8` not covered
   --> $DIR/const-pattern-irrefutable.rs:24:9
    |
-LL |     let d = 4; //~ ERROR refutable pattern in local binding: `_` not covered
+LL |     let d = 4; //~ ERROR refutable pattern in local binding: `0u8..=1u8` not covered
    |         ^ interpreted as a constant pattern, not new variable
 
 error: aborting due to 3 previous errors
diff --git a/src/test/ui/exhaustive_integer_patterns.stderr b/src/test/ui/exhaustive_integer_patterns.stderr
index 44b05a12aeb..c9b669aefd1 100644
--- a/src/test/ui/exhaustive_integer_patterns.stderr
+++ b/src/test/ui/exhaustive_integer_patterns.stderr
@@ -1,83 +1,83 @@
 error: unreachable pattern
-  --> $DIR/exhaustive_integer_patterns.rs:32:9
+  --> $DIR/exhaustive_integer_patterns.rs:33:9
    |
 LL |         200 => {} //~ ERROR unreachable pattern
    |         ^^^
    |
 note: lint level defined here
-  --> $DIR/exhaustive_integer_patterns.rs:13:9
+  --> $DIR/exhaustive_integer_patterns.rs:14:9
    |
 LL | #![deny(unreachable_patterns)]
    |         ^^^^^^^^^^^^^^^^^^^^
 
 error[E0004]: non-exhaustive patterns: `128u8..=255u8` not covered
-  --> $DIR/exhaustive_integer_patterns.rs:37:11
+  --> $DIR/exhaustive_integer_patterns.rs:38:11
    |
 LL |     match x { //~ ERROR non-exhaustive patterns
    |           ^ pattern `128u8..=255u8` not covered
 
 error[E0004]: non-exhaustive patterns: `11u8..=19u8`, `31u8..=34u8`, `36u8..=69u8` and 1 more not covered
-  --> $DIR/exhaustive_integer_patterns.rs:42:11
+  --> $DIR/exhaustive_integer_patterns.rs:43:11
    |
 LL |     match x { //~ ERROR non-exhaustive patterns
    |           ^ patterns `11u8..=19u8`, `31u8..=34u8`, `36u8..=69u8` and 1 more not covered
 
 error: unreachable pattern
-  --> $DIR/exhaustive_integer_patterns.rs:53:9
+  --> $DIR/exhaustive_integer_patterns.rs:54:9
    |
 LL |         -2..=20 => {} //~ ERROR unreachable pattern
    |         ^^^^^^^
 
 error[E0004]: non-exhaustive patterns: `-128i8..=-8i8`, `-6i8`, `121i8..=124i8` and 1 more not covered
-  --> $DIR/exhaustive_integer_patterns.rs:50:11
+  --> $DIR/exhaustive_integer_patterns.rs:51:11
    |
 LL |     match x { //~ ERROR non-exhaustive patterns
    |           ^ patterns `-128i8..=-8i8`, `-6i8`, `121i8..=124i8` and 1 more not covered
 
 error[E0004]: non-exhaustive patterns: `-128i8` not covered
-  --> $DIR/exhaustive_integer_patterns.rs:99:11
+  --> $DIR/exhaustive_integer_patterns.rs:100:11
    |
 LL |     match 0i8 { //~ ERROR non-exhaustive patterns
    |           ^^^ pattern `-128i8` not covered
 
 error[E0004]: non-exhaustive patterns: `0i16` not covered
-  --> $DIR/exhaustive_integer_patterns.rs:107:11
+  --> $DIR/exhaustive_integer_patterns.rs:108:11
    |
 LL |     match 0i16 { //~ ERROR non-exhaustive patterns
    |           ^^^^ pattern `0i16` not covered
 
 error[E0004]: non-exhaustive patterns: `128u8..=255u8` not covered
-  --> $DIR/exhaustive_integer_patterns.rs:125:11
+  --> $DIR/exhaustive_integer_patterns.rs:126:11
    |
 LL |     match 0u8 { //~ ERROR non-exhaustive patterns
    |           ^^^ pattern `128u8..=255u8` not covered
 
 error[E0004]: non-exhaustive patterns: `(0u8, Some(_))` and `(2u8..=255u8, Some(_))` not covered
-  --> $DIR/exhaustive_integer_patterns.rs:137:11
+  --> $DIR/exhaustive_integer_patterns.rs:138:11
    |
 LL |     match (0u8, Some(())) { //~ ERROR non-exhaustive patterns
    |           ^^^^^^^^^^^^^^^ patterns `(0u8, Some(_))` and `(2u8..=255u8, Some(_))` not covered
 
 error[E0004]: non-exhaustive patterns: `(126u8..=127u8, false)` not covered
-  --> $DIR/exhaustive_integer_patterns.rs:142:11
+  --> $DIR/exhaustive_integer_patterns.rs:143:11
    |
 LL |     match (0u8, true) { //~ ERROR non-exhaustive patterns
    |           ^^^^^^^^^^^ pattern `(126u8..=127u8, false)` not covered
 
 error[E0004]: non-exhaustive patterns: `340282366920938463463374607431768211455u128` not covered
-  --> $DIR/exhaustive_integer_patterns.rs:162:11
+  --> $DIR/exhaustive_integer_patterns.rs:163:11
    |
 LL |     match 0u128 { //~ ERROR non-exhaustive patterns
    |           ^^^^^ pattern `340282366920938463463374607431768211455u128` not covered
 
 error[E0004]: non-exhaustive patterns: `5u128..=340282366920938463463374607431768211455u128` not covered
-  --> $DIR/exhaustive_integer_patterns.rs:166:11
+  --> $DIR/exhaustive_integer_patterns.rs:167:11
    |
 LL |     match 0u128 { //~ ERROR non-exhaustive patterns
    |           ^^^^^ pattern `5u128..=340282366920938463463374607431768211455u128` not covered
 
 error[E0004]: non-exhaustive patterns: `0u128..=3u128` not covered
-  --> $DIR/exhaustive_integer_patterns.rs:170:11
+  --> $DIR/exhaustive_integer_patterns.rs:171:11
    |
 LL |     match 0u128 { //~ ERROR non-exhaustive patterns
    |           ^^^^^ pattern `0u128..=3u128` not covered
diff --git a/src/test/ui/feature-gate-exhaustive_integer_patterns.rs b/src/test/ui/feature-gate-exhaustive_integer_patterns.rs
deleted file mode 100644
index 3aa15229455..00000000000
--- a/src/test/ui/feature-gate-exhaustive_integer_patterns.rs
+++ /dev/null
@@ -1,16 +0,0 @@
-// Copyright 2018 The Rust Project Developers. See the COPYRIGHT
-// file at the top-level directory of this distribution and at
-// http://rust-lang.org/COPYRIGHT.
-//
-// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
-// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
-// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
-// option. This file may not be copied, modified, or distributed
-// except according to those terms.
-
-fn main() {
-    let x: u8 = 0;
-    match x { //~ ERROR non-exhaustive patterns: `_` not covered
-        0 ..= 255 => {}
-    }
-}
diff --git a/src/test/ui/feature-gate-exhaustive_integer_patterns.stderr b/src/test/ui/feature-gate-exhaustive_integer_patterns.stderr
deleted file mode 100644
index 63d98f6b5eb..00000000000
--- a/src/test/ui/feature-gate-exhaustive_integer_patterns.stderr
+++ /dev/null
@@ -1,9 +0,0 @@
-error[E0004]: non-exhaustive patterns: `_` not covered
-  --> $DIR/feature-gate-exhaustive_integer_patterns.rs:13:11
-   |
-LL |     match x { //~ ERROR non-exhaustive patterns: `_` not covered
-   |           ^ pattern `_` not covered
-
-error: aborting due to previous error
-
-For more information about this error, try `rustc --explain E0004`.
diff --git a/src/test/ui/for/for-loop-refutable-pattern-error-message.stderr b/src/test/ui/for/for-loop-refutable-pattern-error-message.stderr
index b76c2ffc240..9b19fc80e2b 100644
--- a/src/test/ui/for/for-loop-refutable-pattern-error-message.stderr
+++ b/src/test/ui/for/for-loop-refutable-pattern-error-message.stderr
@@ -1,8 +1,8 @@
-error[E0005]: refutable pattern in `for` loop binding: `&_` not covered
+error[E0005]: refutable pattern in `for` loop binding: `&-2147483648i32..=0i32` not covered
   --> $DIR/for-loop-refutable-pattern-error-message.rs:12:9
    |
 LL |     for &1 in [1].iter() {} //~ ERROR refutable pattern in `for` loop binding
-   |         ^^ pattern `&_` not covered
+   |         ^^ pattern `&-2147483648i32..=0i32` not covered
 
 error: aborting due to previous error
 
diff --git a/src/test/ui/match/match-non-exhaustive.stderr b/src/test/ui/match/match-non-exhaustive.stderr
index 04f09caceed..ad895b448dd 100644
--- a/src/test/ui/match/match-non-exhaustive.stderr
+++ b/src/test/ui/match/match-non-exhaustive.stderr
@@ -1,8 +1,8 @@
-error[E0004]: non-exhaustive patterns: `_` not covered
+error[E0004]: non-exhaustive patterns: `-2147483648i32..=0i32` and `2i32..=2147483647i32` not covered
   --> $DIR/match-non-exhaustive.rs:12:11
    |
 LL |     match 0 { 1 => () } //~ ERROR non-exhaustive patterns
-   |           ^ pattern `_` not covered
+   |           ^ patterns `-2147483648i32..=0i32` and `2i32..=2147483647i32` not covered
 
 error[E0004]: non-exhaustive patterns: `_` not covered
   --> $DIR/match-non-exhaustive.rs:13:11
diff --git a/src/test/ui/match/match-range-fail-dominate.stderr b/src/test/ui/match/match-range-fail-dominate.stderr
index d75630e09c5..99f65042d85 100644
--- a/src/test/ui/match/match-range-fail-dominate.stderr
+++ b/src/test/ui/match/match-range-fail-dominate.stderr
@@ -62,5 +62,11 @@ error: unreachable pattern
 LL |       0.02f64 => {}
    |       ^^^^^^^
 
-error: aborting due to 5 previous errors
+error: unreachable pattern
+  --> $DIR/match-range-fail-dominate.rs:47:7
+   |
+LL |       _ => {}
+   |       ^
+
+error: aborting due to 6 previous errors
 
diff --git a/src/test/ui/non-exhaustive/non-exhaustive-match.rs b/src/test/ui/non-exhaustive/non-exhaustive-match.rs
index 13b62429f46..99a0c5d6626 100644
--- a/src/test/ui/non-exhaustive/non-exhaustive-match.rs
+++ b/src/test/ui/non-exhaustive/non-exhaustive-match.rs
@@ -22,7 +22,8 @@ fn main() {
     match Some(10) { //~ ERROR non-exhaustive patterns: `Some(_)` not covered
       None => {}
     }
-    match (2, 3, 4) { //~ ERROR non-exhaustive patterns: `(_, _, _)` not covered
+    match (2, 3, 4) { //~ ERROR non-exhaustive patterns: `(_, _, -2147483648i32..=3i32)`
+                      //  and `(_, _, 5i32..=2147483647i32)` not covered
       (_, _, 4) => {}
     }
     match (t::a, t::a) { //~ ERROR non-exhaustive patterns: `(a, a)` not covered
diff --git a/src/test/ui/non-exhaustive/non-exhaustive-match.stderr b/src/test/ui/non-exhaustive/non-exhaustive-match.stderr
index f48a0bc15eb..d3703a44454 100644
--- a/src/test/ui/non-exhaustive/non-exhaustive-match.stderr
+++ b/src/test/ui/non-exhaustive/non-exhaustive-match.stderr
@@ -16,32 +16,32 @@ error[E0004]: non-exhaustive patterns: `Some(_)` not covered
 LL |     match Some(10) { //~ ERROR non-exhaustive patterns: `Some(_)` not covered
    |           ^^^^^^^^ pattern `Some(_)` not covered
 
-error[E0004]: non-exhaustive patterns: `(_, _, _)` not covered
+error[E0004]: non-exhaustive patterns: `(_, _, -2147483648i32..=3i32)` and `(_, _, 5i32..=2147483647i32)` not covered
   --> $DIR/non-exhaustive-match.rs:25:11
    |
-LL |     match (2, 3, 4) { //~ ERROR non-exhaustive patterns: `(_, _, _)` not covered
-   |           ^^^^^^^^^ pattern `(_, _, _)` not covered
+LL |     match (2, 3, 4) { //~ ERROR non-exhaustive patterns: `(_, _, -2147483648i32..=3i32)`
+   |           ^^^^^^^^^ patterns `(_, _, -2147483648i32..=3i32)` and `(_, _, 5i32..=2147483647i32)` not covered
 
 error[E0004]: non-exhaustive patterns: `(a, a)` not covered
-  --> $DIR/non-exhaustive-match.rs:28:11
+  --> $DIR/non-exhaustive-match.rs:29:11
    |
 LL |     match (t::a, t::a) { //~ ERROR non-exhaustive patterns: `(a, a)` not covered
    |           ^^^^^^^^^^^^ pattern `(a, a)` not covered
 
 error[E0004]: non-exhaustive patterns: `b` not covered
-  --> $DIR/non-exhaustive-match.rs:32:11
+  --> $DIR/non-exhaustive-match.rs:33:11
    |
 LL |     match t::a { //~ ERROR non-exhaustive patterns: `b` not covered
    |           ^^^^ pattern `b` not covered
 
 error[E0004]: non-exhaustive patterns: `[]` not covered
-  --> $DIR/non-exhaustive-match.rs:43:11
+  --> $DIR/non-exhaustive-match.rs:44:11
    |
 LL |     match *vec { //~ ERROR non-exhaustive patterns: `[]` not covered
    |           ^^^^ pattern `[]` not covered
 
 error[E0004]: non-exhaustive patterns: `[_, _, _, _]` not covered
-  --> $DIR/non-exhaustive-match.rs:56:11
+  --> $DIR/non-exhaustive-match.rs:57:11
    |
 LL |     match *vec { //~ ERROR non-exhaustive patterns: `[_, _, _, _]` not covered
    |           ^^^^ pattern `[_, _, _, _]` not covered
diff --git a/src/test/ui/refutable-pattern-errors.rs b/src/test/ui/refutable-pattern-errors.rs
index 7b4009481ab..a140e421a57 100644
--- a/src/test/ui/refutable-pattern-errors.rs
+++ b/src/test/ui/refutable-pattern-errors.rs
@@ -14,5 +14,5 @@ fn func((1, (Some(1), 2..=3)): (isize, (Option<isize>, isize))) { }
 
 fn main() {
     let (1, (Some(1), 2..=3)) = (1, (None, 2));
-    //~^ ERROR refutable pattern in local binding: `(_, _)` not covered
+    //~^ ERROR refutable pattern in local binding: `(-2147483648i32..=0i32, _)` not covered
 }
diff --git a/src/test/ui/refutable-pattern-errors.stderr b/src/test/ui/refutable-pattern-errors.stderr
index c2d5fe001fc..42aa5727895 100644
--- a/src/test/ui/refutable-pattern-errors.stderr
+++ b/src/test/ui/refutable-pattern-errors.stderr
@@ -4,11 +4,11 @@ error[E0005]: refutable pattern in function argument: `(_, _)` not covered
 LL | fn func((1, (Some(1), 2..=3)): (isize, (Option<isize>, isize))) { }
    |         ^^^^^^^^^^^^^^^^^^^^^ pattern `(_, _)` not covered
 
-error[E0005]: refutable pattern in local binding: `(_, _)` not covered
+error[E0005]: refutable pattern in local binding: `(-2147483648i32..=0i32, _)` not covered
   --> $DIR/refutable-pattern-errors.rs:16:9
    |
 LL |     let (1, (Some(1), 2..=3)) = (1, (None, 2));
-   |         ^^^^^^^^^^^^^^^^^^^^^ pattern `(_, _)` not covered
+   |         ^^^^^^^^^^^^^^^^^^^^^ pattern `(-2147483648i32..=0i32, _)` not covered
 
 error: aborting due to 2 previous errors