tests: remove ignore directives from tests that mention core/alloc/st…

…d spans.
rust-lang · Apr 2, 2020 · 8deff18 · 8deff18
1 parent f5892c0
commit 8deff18
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diff --git a/src/etc/generate-deriving-span-tests.py b/src/etc/generate-deriving-span-tests.py
@@ -15,9 +15,6 @@
     os.path.join(os.path.dirname(__file__), '../test/ui/derives/'))
 
 TEMPLATE = """\
-// FIXME: missing sysroot spans (#53081)
-// ignore-i586-unknown-linux-gnu
-// ignore-i586-unknown-linux-musl
 // This file was auto-generated using 'src/etc/generate-deriving-span-tests.py'
 
 {error_deriving}

diff --git a/src/test/ui/async-await/issues/issue-62009-1.rs b/src/test/ui/async-await/issues/issue-62009-1.rs
@@ -1,8 +1,4 @@
 // edition:2018
-// FIXME: missing sysroot spans (#53081)
-// ignore-i586-unknown-linux-gnu
-// ignore-i586-unknown-linux-musl
-// ignore-i686-unknown-linux-musl
 
 async fn print_dur() {}
 

diff --git a/src/test/ui/async-await/issues/issue-62009-1.stderr b/src/test/ui/async-await/issues/issue-62009-1.stderr
@@ -1,13 +1,13 @@
 error[E0728]: `await` is only allowed inside `async` functions and blocks
-  --> $DIR/issue-62009-1.rs:10:5
+  --> $DIR/issue-62009-1.rs:6:5
    |
 LL | fn main() {
    |    ---- this is not `async`
 LL |     async { let (); }.await;
    |     ^^^^^^^^^^^^^^^^^^^^^^^ only allowed inside `async` functions and blocks
 
 error[E0728]: `await` is only allowed inside `async` functions and blocks
-  --> $DIR/issue-62009-1.rs:12:5
+  --> $DIR/issue-62009-1.rs:8:5
    |
 LL |   fn main() {
    |      ---- this is not `async`
@@ -19,19 +19,19 @@ LL | |     }.await;
    | |___________^ only allowed inside `async` functions and blocks
 
 error[E0728]: `await` is only allowed inside `async` functions and blocks
-  --> $DIR/issue-62009-1.rs:16:5
+  --> $DIR/issue-62009-1.rs:12:5
    |
 LL | fn main() {
    |    ---- this is not `async`
 ...
 LL |     (|_| 2333).await;
    |     ^^^^^^^^^^^^^^^^ only allowed inside `async` functions and blocks
 
-error[E0277]: the trait bound `[closure@$DIR/issue-62009-1.rs:16:5: 16:15]: std::future::Future` is not satisfied
-  --> $DIR/issue-62009-1.rs:16:5
+error[E0277]: the trait bound `[closure@$DIR/issue-62009-1.rs:12:5: 12:15]: std::future::Future` is not satisfied
+  --> $DIR/issue-62009-1.rs:12:5
    |
 LL |     (|_| 2333).await;
-   |     ^^^^^^^^^^^^^^^^ the trait `std::future::Future` is not implemented for `[closure@$DIR/issue-62009-1.rs:16:5: 16:15]`
+   |     ^^^^^^^^^^^^^^^^ the trait `std::future::Future` is not implemented for `[closure@$DIR/issue-62009-1.rs:12:5: 12:15]`
    | 
   ::: $SRC_DIR/libcore/future/mod.rs:LL:COL
    |

diff --git a/src/test/ui/closures/closure-move-sync.rs b/src/test/ui/closures/closure-move-sync.rs
@@ -1,7 +1,3 @@
-// FIXME: missing sysroot spans (#53081)
-// ignore-i586-unknown-linux-gnu
-// ignore-i586-unknown-linux-musl
-// ignore-i686-unknown-linux-musl
 use std::thread;
 use std::sync::mpsc::channel;
 

diff --git a/src/test/ui/closures/closure-move-sync.stderr b/src/test/ui/closures/closure-move-sync.stderr
@@ -1,5 +1,5 @@
 error[E0277]: `std::sync::mpsc::Receiver<()>` cannot be shared between threads safely
-  --> $DIR/closure-move-sync.rs:10:13
+  --> $DIR/closure-move-sync.rs:6:13
    |
 LL |     let t = thread::spawn(|| {
    |             ^^^^^^^^^^^^^ `std::sync::mpsc::Receiver<()>` cannot be shared between threads safely
@@ -11,10 +11,10 @@ LL |     F: Send + 'static,
    |
    = help: the trait `std::marker::Sync` is not implemented for `std::sync::mpsc::Receiver<()>`
    = note: required because of the requirements on the impl of `std::marker::Send` for `&std::sync::mpsc::Receiver<()>`
-   = note: required because it appears within the type `[closure@$DIR/closure-move-sync.rs:10:27: 13:6 recv:&std::sync::mpsc::Receiver<()>]`
+   = note: required because it appears within the type `[closure@$DIR/closure-move-sync.rs:6:27: 9:6 recv:&std::sync::mpsc::Receiver<()>]`
 
 error[E0277]: `std::sync::mpsc::Sender<()>` cannot be shared between threads safely
-  --> $DIR/closure-move-sync.rs:22:5
+  --> $DIR/closure-move-sync.rs:18:5
    |
 LL |     thread::spawn(|| tx.send(()).unwrap());
    |     ^^^^^^^^^^^^^ `std::sync::mpsc::Sender<()>` cannot be shared between threads safely
@@ -26,7 +26,7 @@ LL |     F: Send + 'static,
    |
    = help: the trait `std::marker::Sync` is not implemented for `std::sync::mpsc::Sender<()>`
    = note: required because of the requirements on the impl of `std::marker::Send` for `&std::sync::mpsc::Sender<()>`
-   = note: required because it appears within the type `[closure@$DIR/closure-move-sync.rs:22:19: 22:42 tx:&std::sync::mpsc::Sender<()>]`
+   = note: required because it appears within the type `[closure@$DIR/closure-move-sync.rs:18:19: 18:42 tx:&std::sync::mpsc::Sender<()>]`
 
 error: aborting due to 2 previous errors
 

diff --git a/src/test/ui/consts/const-size_of-cycle.rs b/src/test/ui/consts/const-size_of-cycle.rs
@@ -1,7 +1,3 @@
-// FIXME: missing sysroot spans (#53081)
-// ignore-i586-unknown-linux-gnu
-// ignore-i586-unknown-linux-musl
-// ignore-i686-unknown-linux-musl
 // error-pattern: cycle detected
 
 struct Foo {

diff --git a/src/test/ui/consts/const-size_of-cycle.stderr b/src/test/ui/consts/const-size_of-cycle.stderr
@@ -1,16 +1,16 @@
 error[E0391]: cycle detected when const-evaluating + checking `Foo::bytes::{{constant}}#0`
-  --> $DIR/const-size_of-cycle.rs:8:17
+  --> $DIR/const-size_of-cycle.rs:4:17
    |
 LL |     bytes: [u8; std::mem::size_of::<Foo>()]
    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^
    |
 note: ...which requires const-evaluating + checking `Foo::bytes::{{constant}}#0`...
-  --> $DIR/const-size_of-cycle.rs:8:17
+  --> $DIR/const-size_of-cycle.rs:4:17
    |
 LL |     bytes: [u8; std::mem::size_of::<Foo>()]
    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^
 note: ...which requires const-evaluating `Foo::bytes::{{constant}}#0`...
-  --> $DIR/const-size_of-cycle.rs:8:17
+  --> $DIR/const-size_of-cycle.rs:4:17
    |
 LL |     bytes: [u8; std::mem::size_of::<Foo>()]
    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^
@@ -28,7 +28,7 @@ LL |     pub fn size_of<T>() -> usize;
    = note: ...which requires normalizing `[u8; _]`...
    = note: ...which again requires const-evaluating + checking `Foo::bytes::{{constant}}#0`, completing the cycle
 note: cycle used when processing `Foo`
-  --> $DIR/const-size_of-cycle.rs:7:1
+  --> $DIR/const-size_of-cycle.rs:3:1
    |
 LL | struct Foo {
    | ^^^^^^^^^^

diff --git a/src/test/ui/consts/miri_unleashed/drop.rs b/src/test/ui/consts/miri_unleashed/drop.rs
@@ -1,8 +1,4 @@
 // compile-flags: -Zunleash-the-miri-inside-of-you
-// FIXME: missing sysroot spans (#53081)
-// ignore-i586-unknown-linux-gnu
-// ignore-i586-unknown-linux-musl
-// ignore-i686-unknown-linux-musl
 // error-pattern: calling non-const function `<std::vec::Vec<i32> as std::ops::Drop>::drop`
 #![deny(const_err)]
 

diff --git a/src/test/ui/consts/miri_unleashed/drop.stderr b/src/test/ui/consts/miri_unleashed/drop.stderr
@@ -1,5 +1,5 @@
 warning: skipping const checks
-  --> $DIR/drop.rs:21:9
+  --> $DIR/drop.rs:17:9
    |
 LL |     let _v: Vec<i32> = Vec::new();
    |         ^^
@@ -17,10 +17,10 @@ LL | | }
    | |_calling non-const function `<std::vec::Vec<i32> as std::ops::Drop>::drop`
    |   inside `std::intrinsics::drop_in_place::<std::vec::Vec<i32>> - shim(Some(std::vec::Vec<i32>))` at $SRC_DIR/libcore/ptr/mod.rs:LL:COL
    | 
-  ::: $DIR/drop.rs:23:1
+  ::: $DIR/drop.rs:19:1
    |
 LL |   };
-   |   - inside `TEST_BAD` at $DIR/drop.rs:23:1
+   |   - inside `TEST_BAD` at $DIR/drop.rs:19:1
 
 error: aborting due to previous error
 

diff --git a/src/test/ui/consts/offset_from_ub.rs b/src/test/ui/consts/offset_from_ub.rs
@@ -1,8 +1,3 @@
-// FIXME: missing sysroot spans (#53081)
-// ignore-i586-unknown-linux-gnu
-// ignore-i586-unknown-linux-musl
-// ignore-i686-unknown-linux-musl
-
 #![feature(const_raw_ptr_deref)]
 #![feature(const_ptr_offset_from)]
 #![feature(ptr_offset_from)]

diff --git a/src/test/ui/consts/offset_from_ub.stderr b/src/test/ui/consts/offset_from_ub.stderr
@@ -6,9 +6,9 @@ LL |           intrinsics::ptr_offset_from(self, origin)
    |           |
    |           ptr_offset_from cannot compute offset of pointers into different allocations.
    |           inside `std::ptr::const_ptr::<impl *const Struct>::offset_from` at $SRC_DIR/libcore/ptr/const_ptr.rs:LL:COL
-   |           inside `DIFFERENT_ALLOC` at $DIR/offset_from_ub.rs:22:27
+   |           inside `DIFFERENT_ALLOC` at $DIR/offset_from_ub.rs:17:27
    | 
-  ::: $DIR/offset_from_ub.rs:16:1
+  ::: $DIR/offset_from_ub.rs:11:1
    |
 LL | / pub const DIFFERENT_ALLOC: usize = {
 LL | |
@@ -29,9 +29,9 @@ LL |           intrinsics::ptr_offset_from(self, origin)
    |           |
    |           unable to turn bytes into a pointer
    |           inside `std::ptr::const_ptr::<impl *const u8>::offset_from` at $SRC_DIR/libcore/ptr/const_ptr.rs:LL:COL
-   |           inside `NOT_PTR` at $DIR/offset_from_ub.rs:28:14
+   |           inside `NOT_PTR` at $DIR/offset_from_ub.rs:23:14
    | 
-  ::: $DIR/offset_from_ub.rs:26:1
+  ::: $DIR/offset_from_ub.rs:21:1
    |
 LL | / pub const NOT_PTR: usize = {
 LL | |
@@ -47,9 +47,9 @@ LL |           intrinsics::ptr_offset_from(self, origin)
    |           |
    |           exact_div: 1isize cannot be divided by 2isize without remainder
    |           inside `std::ptr::const_ptr::<impl *const u16>::offset_from` at $SRC_DIR/libcore/ptr/const_ptr.rs:LL:COL
-   |           inside `NOT_MULTIPLE_OF_SIZE` at $DIR/offset_from_ub.rs:36:14
+   |           inside `NOT_MULTIPLE_OF_SIZE` at $DIR/offset_from_ub.rs:31:14
    | 
-  ::: $DIR/offset_from_ub.rs:31:1
+  ::: $DIR/offset_from_ub.rs:26:1
    |
 LL | / pub const NOT_MULTIPLE_OF_SIZE: isize = {
 LL | |
@@ -68,9 +68,9 @@ LL |           intrinsics::ptr_offset_from(self, origin)
    |           |
    |           invalid use of NULL pointer
    |           inside `std::ptr::const_ptr::<impl *const u8>::offset_from` at $SRC_DIR/libcore/ptr/const_ptr.rs:LL:COL
-   |           inside `OFFSET_FROM_NULL` at $DIR/offset_from_ub.rs:42:14
+   |           inside `OFFSET_FROM_NULL` at $DIR/offset_from_ub.rs:37:14
    | 
-  ::: $DIR/offset_from_ub.rs:39:1
+  ::: $DIR/offset_from_ub.rs:34:1
    |
 LL | / pub const OFFSET_FROM_NULL: isize = {
 LL | |
@@ -87,9 +87,9 @@ LL |           intrinsics::ptr_offset_from(self, origin)
    |           |
    |           unable to turn bytes into a pointer
    |           inside `std::ptr::const_ptr::<impl *const u8>::offset_from` at $SRC_DIR/libcore/ptr/const_ptr.rs:LL:COL
-   |           inside `DIFFERENT_INT` at $DIR/offset_from_ub.rs:49:14
+   |           inside `DIFFERENT_INT` at $DIR/offset_from_ub.rs:44:14
    | 
-  ::: $DIR/offset_from_ub.rs:45:1
+  ::: $DIR/offset_from_ub.rs:40:1
    |
 LL | / pub const DIFFERENT_INT: isize = { // offset_from with two different integers: like DIFFERENT_ALLOC
 LL | |

diff --git a/src/test/ui/copy-a-resource.rs b/src/test/ui/copy-a-resource.rs
@@ -1,8 +1,3 @@
-// FIXME: missing sysroot spans (#53081)
-// ignore-i586-unknown-linux-gnu
-// ignore-i586-unknown-linux-musl
-// ignore-i686-unknown-linux-musl
-
 #[derive(Debug)]
 struct Foo {
   i: isize,

diff --git a/src/test/ui/copy-a-resource.stderr b/src/test/ui/copy-a-resource.stderr
@@ -1,5 +1,5 @@
 error[E0599]: no method named `clone` found for struct `Foo` in the current scope
-  --> $DIR/copy-a-resource.rs:23:16
+  --> $DIR/copy-a-resource.rs:18:16
    |
 LL | struct Foo {
    | ---------- method `clone` not found for this

diff --git a/src/test/ui/derives/derive-assoc-type-not-impl.rs b/src/test/ui/derives/derive-assoc-type-not-impl.rs
@@ -1,8 +1,3 @@
-// FIXME: missing sysroot spans (#53081)
-// ignore-i586-unknown-linux-gnu
-// ignore-i586-unknown-linux-musl
-// ignore-i686-unknown-linux-musl
-
 trait Foo {
     type X;
     fn method(&self) {}

diff --git a/src/test/ui/derives/derive-assoc-type-not-impl.stderr b/src/test/ui/derives/derive-assoc-type-not-impl.stderr
@@ -1,5 +1,5 @@
 error[E0599]: no method named `clone` found for struct `Bar<NotClone>` in the current scope
-  --> $DIR/derive-assoc-type-not-impl.rs:23:30
+  --> $DIR/derive-assoc-type-not-impl.rs:18:30
    |
 LL | struct Bar<T: Foo> {
    | ------------------

diff --git a/src/test/ui/derives/derives-span-Clone-enum-struct-variant.rs b/src/test/ui/derives/derives-span-Clone-enum-struct-variant.rs
@@ -1,7 +1,3 @@
-// FIXME: missing sysroot spans (#53081)
-// ignore-i586-unknown-linux-gnu
-// ignore-i586-unknown-linux-musl
-// ignore-i686-unknown-linux-musl
 // This file was auto-generated using 'src/etc/generate-deriving-span-tests.py'
 
 

diff --git a/src/test/ui/derives/derives-span-Clone-enum-struct-variant.stderr b/src/test/ui/derives/derives-span-Clone-enum-struct-variant.stderr
@@ -1,5 +1,5 @@
 error[E0277]: the trait bound `Error: std::clone::Clone` is not satisfied
-  --> $DIR/derives-span-Clone-enum-struct-variant.rs:13:6
+  --> $DIR/derives-span-Clone-enum-struct-variant.rs:9:6
    |
 LL |      x: Error
    |      ^^^^^^^^ the trait `std::clone::Clone` is not implemented for `Error`

diff --git a/src/test/ui/derives/derives-span-Clone-enum.rs b/src/test/ui/derives/derives-span-Clone-enum.rs
@@ -1,7 +1,3 @@
-// FIXME: missing sysroot spans (#53081)
-// ignore-i586-unknown-linux-gnu
-// ignore-i586-unknown-linux-musl
-// ignore-i686-unknown-linux-musl
 // This file was auto-generated using 'src/etc/generate-deriving-span-tests.py'
 
 

diff --git a/src/test/ui/derives/derives-span-Clone-enum.stderr b/src/test/ui/derives/derives-span-Clone-enum.stderr
@@ -1,5 +1,5 @@
 error[E0277]: the trait bound `Error: std::clone::Clone` is not satisfied
-  --> $DIR/derives-span-Clone-enum.rs:13:6
+  --> $DIR/derives-span-Clone-enum.rs:9:6
    |
 LL |      Error
    |      ^^^^^ the trait `std::clone::Clone` is not implemented for `Error`

diff --git a/src/test/ui/derives/derives-span-Clone-struct.rs b/src/test/ui/derives/derives-span-Clone-struct.rs
@@ -1,7 +1,3 @@
-// FIXME: missing sysroot spans (#53081)
-// ignore-i586-unknown-linux-gnu
-// ignore-i586-unknown-linux-musl
-// ignore-i686-unknown-linux-musl
 // This file was auto-generated using 'src/etc/generate-deriving-span-tests.py'
 
 

diff --git a/src/test/ui/derives/derives-span-Clone-struct.stderr b/src/test/ui/derives/derives-span-Clone-struct.stderr
@@ -1,5 +1,5 @@
 error[E0277]: the trait bound `Error: std::clone::Clone` is not satisfied
-  --> $DIR/derives-span-Clone-struct.rs:12:5
+  --> $DIR/derives-span-Clone-struct.rs:8:5
    |
 LL |     x: Error
    |     ^^^^^^^^ the trait `std::clone::Clone` is not implemented for `Error`

diff --git a/src/test/ui/derives/derives-span-Clone-tuple-struct.rs b/src/test/ui/derives/derives-span-Clone-tuple-struct.rs
@@ -1,7 +1,3 @@
-// FIXME: missing sysroot spans (#53081)
-// ignore-i586-unknown-linux-gnu
-// ignore-i586-unknown-linux-musl
-// ignore-i686-unknown-linux-musl
 // This file was auto-generated using 'src/etc/generate-deriving-span-tests.py'
 
 

diff --git a/src/test/ui/derives/derives-span-Clone-tuple-struct.stderr b/src/test/ui/derives/derives-span-Clone-tuple-struct.stderr
@@ -1,5 +1,5 @@
 error[E0277]: the trait bound `Error: std::clone::Clone` is not satisfied
-  --> $DIR/derives-span-Clone-tuple-struct.rs:12:5
+  --> $DIR/derives-span-Clone-tuple-struct.rs:8:5
    |
 LL |     Error
    |     ^^^^^ the trait `std::clone::Clone` is not implemented for `Error`

diff --git a/src/test/ui/derives/derives-span-Debug-enum-struct-variant.rs b/src/test/ui/derives/derives-span-Debug-enum-struct-variant.rs
@@ -1,7 +1,3 @@
-// FIXME: missing sysroot spans (#53081)
-// ignore-i586-unknown-linux-gnu
-// ignore-i586-unknown-linux-musl
-// ignore-i686-unknown-linux-musl
 // This file was auto-generated using 'src/etc/generate-deriving-span-tests.py'
 
 

diff --git a/src/test/ui/derives/derives-span-Debug-enum-struct-variant.stderr b/src/test/ui/derives/derives-span-Debug-enum-struct-variant.stderr
@@ -1,5 +1,5 @@
 error[E0277]: `Error` doesn't implement `std::fmt::Debug`
-  --> $DIR/derives-span-Debug-enum-struct-variant.rs:13:6
+  --> $DIR/derives-span-Debug-enum-struct-variant.rs:9:6
    |
 LL |      x: Error
    |      ^^^^^^^^ `Error` cannot be formatted using `{:?}`

diff --git a/src/test/ui/derives/derives-span-Debug-enum.rs b/src/test/ui/derives/derives-span-Debug-enum.rs
@@ -1,7 +1,3 @@
-// FIXME: missing sysroot spans (#53081)
-// ignore-i586-unknown-linux-gnu
-// ignore-i586-unknown-linux-musl
-// ignore-i686-unknown-linux-musl
 // This file was auto-generated using 'src/etc/generate-deriving-span-tests.py'
 
 

diff --git a/src/test/ui/derives/derives-span-Debug-enum.stderr b/src/test/ui/derives/derives-span-Debug-enum.stderr
@@ -1,5 +1,5 @@
 error[E0277]: `Error` doesn't implement `std::fmt::Debug`
-  --> $DIR/derives-span-Debug-enum.rs:13:6
+  --> $DIR/derives-span-Debug-enum.rs:9:6
    |
 LL |      Error
    |      ^^^^^ `Error` cannot be formatted using `{:?}`

diff --git a/src/test/ui/derives/derives-span-Debug-struct.rs b/src/test/ui/derives/derives-span-Debug-struct.rs
@@ -1,7 +1,3 @@
-// FIXME: missing sysroot spans (#53081)
-// ignore-i586-unknown-linux-gnu
-// ignore-i586-unknown-linux-musl
-// ignore-i686-unknown-linux-musl
 // This file was auto-generated using 'src/etc/generate-deriving-span-tests.py'
 
 

diff --git a/src/test/ui/derives/derives-span-Debug-struct.stderr b/src/test/ui/derives/derives-span-Debug-struct.stderr
@@ -1,5 +1,5 @@
 error[E0277]: `Error` doesn't implement `std::fmt::Debug`
-  --> $DIR/derives-span-Debug-struct.rs:12:5
+  --> $DIR/derives-span-Debug-struct.rs:8:5
    |
 LL |     x: Error
    |     ^^^^^^^^ `Error` cannot be formatted using `{:?}`

diff --git a/src/test/ui/derives/derives-span-Debug-tuple-struct.rs b/src/test/ui/derives/derives-span-Debug-tuple-struct.rs
@@ -1,7 +1,3 @@
-// FIXME: missing sysroot spans (#53081)
-// ignore-i586-unknown-linux-gnu
-// ignore-i586-unknown-linux-musl
-// ignore-i686-unknown-linux-musl
 // This file was auto-generated using 'src/etc/generate-deriving-span-tests.py'
 
 

diff --git a/src/test/ui/derives/derives-span-Debug-tuple-struct.stderr b/src/test/ui/derives/derives-span-Debug-tuple-struct.stderr
@@ -1,5 +1,5 @@
 error[E0277]: `Error` doesn't implement `std::fmt::Debug`
-  --> $DIR/derives-span-Debug-tuple-struct.rs:12:5
+  --> $DIR/derives-span-Debug-tuple-struct.rs:8:5
    |
 LL |     Error
    |     ^^^^^ `Error` cannot be formatted using `{:?}`

diff --git a/src/test/ui/derives/derives-span-Default-struct.rs b/src/test/ui/derives/derives-span-Default-struct.rs
@@ -1,7 +1,3 @@
-// FIXME: missing sysroot spans (#53081)
-// ignore-i586-unknown-linux-gnu
-// ignore-i586-unknown-linux-musl
-// ignore-i686-unknown-linux-musl
 // This file was auto-generated using 'src/etc/generate-deriving-span-tests.py'
 
 

diff --git a/src/test/ui/derives/derives-span-Default-struct.stderr b/src/test/ui/derives/derives-span-Default-struct.stderr
@@ -1,5 +1,5 @@
 error[E0277]: the trait bound `Error: std::default::Default` is not satisfied
-  --> $DIR/derives-span-Default-struct.rs:12:5
+  --> $DIR/derives-span-Default-struct.rs:8:5
    |
 LL |     x: Error
    |     ^^^^^^^^ the trait `std::default::Default` is not implemented for `Error`