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authorbors <bors@rust-lang.org>2020-06-28 08:26:22 +0000
committerbors <bors@rust-lang.org>2020-06-28 08:26:22 +0000
commit25687caa2e4e35b31c29e28998710670e9d54ee9 (patch)
tree65b2f12402411f111f87e2fd39ec73aae44d6325 /src/test/ui
parent3b4a3d68b5d3026bab9d41fcc004439207ecff90 (diff)
parentcdb59d90417b60bc373ab4ea44c768447a7c7994 (diff)
downloadrust-25687caa2e4e35b31c29e28998710670e9d54ee9.tar.gz
rust-25687caa2e4e35b31c29e28998710670e9d54ee9.zip
Auto merge of #73830 - Manishearth:rollup-8k68ysm, r=Manishearth
Rollup of 10 pull requests

Successful merges:

 - #72796 (MIR sanity check: validate types on assignment)
 - #73243 (Add documentation to point to `File::open` or `OpenOptions::open` instead of `is_file` to check read/write possibility)
 - #73525 (Prepare for LLVM 11)
 - #73672 (Adds a clearer message for when the async keyword is missing from a f…)
 - #73708 (Explain move errors that occur due to method calls involving `self` (take two))
 - #73758 (improper_ctypes: fix remaining `Reveal:All`)
 - #73763 (errors: use `-Z terminal-width` in JSON emitter)
 - #73796 (replace more `DefId`s with `LocalDefId`)
 - #73797 (fix typo in self-profile.md)
 - #73809 (Add links to fs::DirEntry::metadata)

Failed merges:

r? @ghost
Diffstat (limited to 'src/test/ui')
-rw-r--r--src/test/ui/async-await/async-error-span.rs2
-rw-r--r--src/test/ui/async-await/async-error-span.stderr5
-rw-r--r--src/test/ui/async-await/issue-70594.rs2
-rw-r--r--src/test/ui/async-await/issue-70594.stderr5
-rw-r--r--src/test/ui/async-await/issues/issue-62009-1.stderr5
-rw-r--r--src/test/ui/binop/binop-consume-args.stderr70
-rw-r--r--src/test/ui/binop/binop-move-semantics.stderr21
-rw-r--r--src/test/ui/borrowck/borrowck-unboxed-closures.stderr7
-rw-r--r--src/test/ui/closure_context/issue-42065.stderr7
-rw-r--r--src/test/ui/codemap_tests/tab_3.stderr8
-rw-r--r--src/test/ui/issues-71798.rs2
-rw-r--r--src/test/ui/issues-71798.stderr5
-rw-r--r--src/test/ui/issues/issue-12127.stderr7
-rw-r--r--src/test/ui/issues/issue-33941.rs1
-rw-r--r--src/test/ui/issues/issue-33941.stderr12
-rw-r--r--src/test/ui/issues/issue-34721.stderr9
-rw-r--r--src/test/ui/issues/issue-61108.stderr8
-rw-r--r--src/test/ui/issues/issue-64559.stderr8
-rw-r--r--src/test/ui/moves/move-fn-self-receiver.rs74
-rw-r--r--src/test/ui/moves/move-fn-self-receiver.stderr158
-rw-r--r--src/test/ui/moves/moves-based-on-type-access-to-field.stderr8
-rw-r--r--src/test/ui/moves/moves-based-on-type-exprs.stderr16
-rw-r--r--src/test/ui/once-cant-call-twice-on-heap.stderr7
-rw-r--r--src/test/ui/suggestions/async-fn-ctor-passed-as-arg-where-it-should-have-been-called.stderr10
-rw-r--r--src/test/ui/terminal-width/flag-human.rs9
-rw-r--r--src/test/ui/terminal-width/flag-human.stderr11
-rw-r--r--src/test/ui/terminal-width/flag-json.rs9
-rw-r--r--src/test/ui/terminal-width/flag-json.stderr32
-rw-r--r--src/test/ui/unboxed-closures/unboxed-closures-infer-fnonce-call-twice.stderr7
-rw-r--r--src/test/ui/unboxed-closures/unboxed-closures-infer-fnonce-move-call-twice.stderr7
-rw-r--r--src/test/ui/unop-move-semantics.stderr7
-rw-r--r--src/test/ui/unsized-locals/borrow-after-move.stderr8
-rw-r--r--src/test/ui/unsized-locals/double-move.stderr8
-rw-r--r--src/test/ui/use/use-after-move-self-based-on-type.stderr8
-rw-r--r--src/test/ui/use/use-after-move-self.stderr8
-rw-r--r--src/test/ui/walk-struct-literal-with.stderr8
36 files changed, 526 insertions, 53 deletions
diff --git a/src/test/ui/async-await/async-error-span.rs b/src/test/ui/async-await/async-error-span.rs
index cf10ebfeca9..86d459bf084 100644
--- a/src/test/ui/async-await/async-error-span.rs
+++ b/src/test/ui/async-await/async-error-span.rs
@@ -5,7 +5,7 @@
 use std::future::Future;
 
 fn get_future() -> impl Future<Output = ()> {
-//~^ ERROR the trait bound `(): std::future::Future` is not satisfied
+//~^ ERROR `()` is not a future
     panic!()
 }
 
diff --git a/src/test/ui/async-await/async-error-span.stderr b/src/test/ui/async-await/async-error-span.stderr
index 4054e739c48..9523f040aa8 100644
--- a/src/test/ui/async-await/async-error-span.stderr
+++ b/src/test/ui/async-await/async-error-span.stderr
@@ -1,12 +1,13 @@
-error[E0277]: the trait bound `(): std::future::Future` is not satisfied
+error[E0277]: `()` is not a future
   --> $DIR/async-error-span.rs:7:20
    |
 LL | fn get_future() -> impl Future<Output = ()> {
-   |                    ^^^^^^^^^^^^^^^^^^^^^^^^ the trait `std::future::Future` is not implemented for `()`
+   |                    ^^^^^^^^^^^^^^^^^^^^^^^^ `()` is not a future
 LL |
 LL |     panic!()
    |     -------- this returned value is of type `!`
    |
+   = help: the trait `std::future::Future` is not implemented for `()`
    = note: the return type of a function must have a statically known size
 
 error[E0698]: type inside `async fn` body must be known in this context
diff --git a/src/test/ui/async-await/issue-70594.rs b/src/test/ui/async-await/issue-70594.rs
index e78231a6851..34d12db8806 100644
--- a/src/test/ui/async-await/issue-70594.rs
+++ b/src/test/ui/async-await/issue-70594.rs
@@ -6,7 +6,7 @@ async fn fun() {
     //~| error: `.await` is not allowed in a `const`
     //~| error: `loop` is not allowed in a `const`
     //~| error: `.await` is not allowed in a `const`
-    //~| error: the trait bound `(): std::future::Future` is not satisfied
+    //~| error: `()` is not a future
 }
 
 fn main() {}
diff --git a/src/test/ui/async-await/issue-70594.stderr b/src/test/ui/async-await/issue-70594.stderr
index 496ca506c60..1b7abe31722 100644
--- a/src/test/ui/async-await/issue-70594.stderr
+++ b/src/test/ui/async-await/issue-70594.stderr
@@ -27,12 +27,13 @@ error[E0744]: `.await` is not allowed in a `const`
 LL |     [1; ().await];
    |         ^^^^^^^^
 
-error[E0277]: the trait bound `(): std::future::Future` is not satisfied
+error[E0277]: `()` is not a future
   --> $DIR/issue-70594.rs:4:9
    |
 LL |     [1; ().await];
-   |         ^^^^^^^^ the trait `std::future::Future` is not implemented for `()`
+   |         ^^^^^^^^ `()` is not a future
    |
+   = help: the trait `std::future::Future` is not implemented for `()`
    = note: required by `std::future::Future::poll`
 
 error: aborting due to 5 previous errors
diff --git a/src/test/ui/async-await/issues/issue-62009-1.stderr b/src/test/ui/async-await/issues/issue-62009-1.stderr
index ec4e9e397a8..e3ba74a03c8 100644
--- a/src/test/ui/async-await/issues/issue-62009-1.stderr
+++ b/src/test/ui/async-await/issues/issue-62009-1.stderr
@@ -27,12 +27,13 @@ LL | fn main() {
 LL |     (|_| 2333).await;
    |     ^^^^^^^^^^^^^^^^ only allowed inside `async` functions and blocks
 
-error[E0277]: the trait bound `[closure@$DIR/issue-62009-1.rs:12:5: 12:15]: std::future::Future` is not satisfied
+error[E0277]: `[closure@$DIR/issue-62009-1.rs:12:5: 12:15]` is not a future
   --> $DIR/issue-62009-1.rs:12:5
    |
 LL |     (|_| 2333).await;
-   |     ^^^^^^^^^^^^^^^^ the trait `std::future::Future` is not implemented for `[closure@$DIR/issue-62009-1.rs:12:5: 12:15]`
+   |     ^^^^^^^^^^^^^^^^ `[closure@$DIR/issue-62009-1.rs:12:5: 12:15]` is not a future
    |
+   = help: the trait `std::future::Future` is not implemented for `[closure@$DIR/issue-62009-1.rs:12:5: 12:15]`
    = note: required by `std::future::Future::poll`
 
 error: aborting due to 4 previous errors
diff --git a/src/test/ui/binop/binop-consume-args.stderr b/src/test/ui/binop/binop-consume-args.stderr
index acdc03e3726..addc8a0efe1 100644
--- a/src/test/ui/binop/binop-consume-args.stderr
+++ b/src/test/ui/binop/binop-consume-args.stderr
@@ -4,10 +4,15 @@ error[E0382]: use of moved value: `lhs`
 LL | fn add<A: Add<B, Output=()>, B>(lhs: A, rhs: B) {
    |                                 --- move occurs because `lhs` has type `A`, which does not implement the `Copy` trait
 LL |     lhs + rhs;
-   |     --- value moved here
+   |     --------- `lhs` moved due to usage in operator
 LL |     drop(lhs);
    |          ^^^ value used here after move
    |
+note: calling this operator moves the left-hand side
+  --> $SRC_DIR/libcore/ops/arith.rs:LL:COL
+   |
+LL |     fn add(self, rhs: Rhs) -> Self::Output;
+   |            ^^^^
 help: consider further restricting this bound
    |
 LL | fn add<A: Add<B, Output=()> + Copy, B>(lhs: A, rhs: B) {
@@ -35,10 +40,15 @@ error[E0382]: use of moved value: `lhs`
 LL | fn sub<A: Sub<B, Output=()>, B>(lhs: A, rhs: B) {
    |                                 --- move occurs because `lhs` has type `A`, which does not implement the `Copy` trait
 LL |     lhs - rhs;
-   |     --- value moved here
+   |     --------- `lhs` moved due to usage in operator
 LL |     drop(lhs);
    |          ^^^ value used here after move
    |
+note: calling this operator moves the left-hand side
+  --> $SRC_DIR/libcore/ops/arith.rs:LL:COL
+   |
+LL |     fn sub(self, rhs: Rhs) -> Self::Output;
+   |            ^^^^
 help: consider further restricting this bound
    |
 LL | fn sub<A: Sub<B, Output=()> + Copy, B>(lhs: A, rhs: B) {
@@ -66,10 +76,15 @@ error[E0382]: use of moved value: `lhs`
 LL | fn mul<A: Mul<B, Output=()>, B>(lhs: A, rhs: B) {
    |                                 --- move occurs because `lhs` has type `A`, which does not implement the `Copy` trait
 LL |     lhs * rhs;
-   |     --- value moved here
+   |     --------- `lhs` moved due to usage in operator
 LL |     drop(lhs);
    |          ^^^ value used here after move
    |
+note: calling this operator moves the left-hand side
+  --> $SRC_DIR/libcore/ops/arith.rs:LL:COL
+   |
+LL |     fn mul(self, rhs: Rhs) -> Self::Output;
+   |            ^^^^
 help: consider further restricting this bound
    |
 LL | fn mul<A: Mul<B, Output=()> + Copy, B>(lhs: A, rhs: B) {
@@ -97,10 +112,15 @@ error[E0382]: use of moved value: `lhs`
 LL | fn div<A: Div<B, Output=()>, B>(lhs: A, rhs: B) {
    |                                 --- move occurs because `lhs` has type `A`, which does not implement the `Copy` trait
 LL |     lhs / rhs;
-   |     --- value moved here
+   |     --------- `lhs` moved due to usage in operator
 LL |     drop(lhs);
    |          ^^^ value used here after move
    |
+note: calling this operator moves the left-hand side
+  --> $SRC_DIR/libcore/ops/arith.rs:LL:COL
+   |
+LL |     fn div(self, rhs: Rhs) -> Self::Output;
+   |            ^^^^
 help: consider further restricting this bound
    |
 LL | fn div<A: Div<B, Output=()> + Copy, B>(lhs: A, rhs: B) {
@@ -128,10 +148,15 @@ error[E0382]: use of moved value: `lhs`
 LL | fn rem<A: Rem<B, Output=()>, B>(lhs: A, rhs: B) {
    |                                 --- move occurs because `lhs` has type `A`, which does not implement the `Copy` trait
 LL |     lhs % rhs;
-   |     --- value moved here
+   |     --------- `lhs` moved due to usage in operator
 LL |     drop(lhs);
    |          ^^^ value used here after move
    |
+note: calling this operator moves the left-hand side
+  --> $SRC_DIR/libcore/ops/arith.rs:LL:COL
+   |
+LL |     fn rem(self, rhs: Rhs) -> Self::Output;
+   |            ^^^^
 help: consider further restricting this bound
    |
 LL | fn rem<A: Rem<B, Output=()> + Copy, B>(lhs: A, rhs: B) {
@@ -159,10 +184,15 @@ error[E0382]: use of moved value: `lhs`
 LL | fn bitand<A: BitAnd<B, Output=()>, B>(lhs: A, rhs: B) {
    |                                       --- move occurs because `lhs` has type `A`, which does not implement the `Copy` trait
 LL |     lhs & rhs;
-   |     --- value moved here
+   |     --------- `lhs` moved due to usage in operator
 LL |     drop(lhs);
    |          ^^^ value used here after move
    |
+note: calling this operator moves the left-hand side
+  --> $SRC_DIR/libcore/ops/bit.rs:LL:COL
+   |
+LL |     fn bitand(self, rhs: Rhs) -> Self::Output;
+   |               ^^^^
 help: consider further restricting this bound
    |
 LL | fn bitand<A: BitAnd<B, Output=()> + Copy, B>(lhs: A, rhs: B) {
@@ -190,10 +220,15 @@ error[E0382]: use of moved value: `lhs`
 LL | fn bitor<A: BitOr<B, Output=()>, B>(lhs: A, rhs: B) {
    |                                     --- move occurs because `lhs` has type `A`, which does not implement the `Copy` trait
 LL |     lhs | rhs;
-   |     --- value moved here
+   |     --------- `lhs` moved due to usage in operator
 LL |     drop(lhs);
    |          ^^^ value used here after move
    |
+note: calling this operator moves the left-hand side
+  --> $SRC_DIR/libcore/ops/bit.rs:LL:COL
+   |
+LL |     fn bitor(self, rhs: Rhs) -> Self::Output;
+   |              ^^^^
 help: consider further restricting this bound
    |
 LL | fn bitor<A: BitOr<B, Output=()> + Copy, B>(lhs: A, rhs: B) {
@@ -221,10 +256,15 @@ error[E0382]: use of moved value: `lhs`
 LL | fn bitxor<A: BitXor<B, Output=()>, B>(lhs: A, rhs: B) {
    |                                       --- move occurs because `lhs` has type `A`, which does not implement the `Copy` trait
 LL |     lhs ^ rhs;
-   |     --- value moved here
+   |     --------- `lhs` moved due to usage in operator
 LL |     drop(lhs);
    |          ^^^ value used here after move
    |
+note: calling this operator moves the left-hand side
+  --> $SRC_DIR/libcore/ops/bit.rs:LL:COL
+   |
+LL |     fn bitxor(self, rhs: Rhs) -> Self::Output;
+   |               ^^^^
 help: consider further restricting this bound
    |
 LL | fn bitxor<A: BitXor<B, Output=()> + Copy, B>(lhs: A, rhs: B) {
@@ -252,10 +292,15 @@ error[E0382]: use of moved value: `lhs`
 LL | fn shl<A: Shl<B, Output=()>, B>(lhs: A, rhs: B) {
    |                                 --- move occurs because `lhs` has type `A`, which does not implement the `Copy` trait
 LL |     lhs << rhs;
-   |     --- value moved here
+   |     ---------- `lhs` moved due to usage in operator
 LL |     drop(lhs);
    |          ^^^ value used here after move
    |
+note: calling this operator moves the left-hand side
+  --> $SRC_DIR/libcore/ops/bit.rs:LL:COL
+   |
+LL |     fn shl(self, rhs: Rhs) -> Self::Output;
+   |            ^^^^
 help: consider further restricting this bound
    |
 LL | fn shl<A: Shl<B, Output=()> + Copy, B>(lhs: A, rhs: B) {
@@ -283,10 +328,15 @@ error[E0382]: use of moved value: `lhs`
 LL | fn shr<A: Shr<B, Output=()>, B>(lhs: A, rhs: B) {
    |                                 --- move occurs because `lhs` has type `A`, which does not implement the `Copy` trait
 LL |     lhs >> rhs;
-   |     --- value moved here
+   |     ---------- `lhs` moved due to usage in operator
 LL |     drop(lhs);
    |          ^^^ value used here after move
    |
+note: calling this operator moves the left-hand side
+  --> $SRC_DIR/libcore/ops/bit.rs:LL:COL
+   |
+LL |     fn shr(self, rhs: Rhs) -> Self::Output;
+   |            ^^^^
 help: consider further restricting this bound
    |
 LL | fn shr<A: Shr<B, Output=()> + Copy, B>(lhs: A, rhs: B) {
diff --git a/src/test/ui/binop/binop-move-semantics.stderr b/src/test/ui/binop/binop-move-semantics.stderr
index 6d5ac9cab30..97b70efe20e 100644
--- a/src/test/ui/binop/binop-move-semantics.stderr
+++ b/src/test/ui/binop/binop-move-semantics.stderr
@@ -1,14 +1,21 @@
 error[E0382]: use of moved value: `x`
   --> $DIR/binop-move-semantics.rs:8:5
    |
-LL | fn double_move<T: Add<Output=()>>(x: T) {
-   |                                   - move occurs because `x` has type `T`, which does not implement the `Copy` trait
-LL |     x
-   |     - value moved here
-LL |     +
-LL |     x;
-   |     ^ value used here after move
+LL |   fn double_move<T: Add<Output=()>>(x: T) {
+   |                                     - move occurs because `x` has type `T`, which does not implement the `Copy` trait
+LL | /     x
+LL | |     +
+LL | |     x;
+   | |     ^
+   | |     |
+   | |_____value used here after move
+   |       `x` moved due to usage in operator
+   |
+note: calling this operator moves the left-hand side
+  --> $SRC_DIR/libcore/ops/arith.rs:LL:COL
    |
+LL |     fn add(self, rhs: Rhs) -> Self::Output;
+   |            ^^^^
 help: consider further restricting this bound
    |
 LL | fn double_move<T: Add<Output=()> + Copy>(x: T) {
diff --git a/src/test/ui/borrowck/borrowck-unboxed-closures.stderr b/src/test/ui/borrowck/borrowck-unboxed-closures.stderr
index a51cda548ef..bc1721944fb 100644
--- a/src/test/ui/borrowck/borrowck-unboxed-closures.stderr
+++ b/src/test/ui/borrowck/borrowck-unboxed-closures.stderr
@@ -22,10 +22,15 @@ error[E0382]: use of moved value: `f`
 LL | fn c<F:FnOnce(isize, isize) -> isize>(f: F) {
    |                                       - move occurs because `f` has type `F`, which does not implement the `Copy` trait
 LL |     f(1, 2);
-   |     - value moved here
+   |     ------- `f` moved due to this call
 LL |     f(1, 2);
    |     ^ value used here after move
    |
+note: this value implements `FnOnce`, which causes it to be moved when called
+  --> $DIR/borrowck-unboxed-closures.rs:11:5
+   |
+LL |     f(1, 2);
+   |     ^
 help: consider further restricting this bound
    |
 LL | fn c<F:FnOnce(isize, isize) -> isize + Copy>(f: F) {
diff --git a/src/test/ui/closure_context/issue-42065.stderr b/src/test/ui/closure_context/issue-42065.stderr
index 69d98654048..896bb6dc6be 100644
--- a/src/test/ui/closure_context/issue-42065.stderr
+++ b/src/test/ui/closure_context/issue-42065.stderr
@@ -2,7 +2,7 @@ error[E0382]: use of moved value: `debug_dump_dict`
   --> $DIR/issue-42065.rs:11:5
    |
 LL |     debug_dump_dict();
-   |     --------------- value moved here
+   |     ----------------- `debug_dump_dict` moved due to this call
 LL |     debug_dump_dict();
    |     ^^^^^^^^^^^^^^^ value used here after move
    |
@@ -11,6 +11,11 @@ note: closure cannot be invoked more than once because it moves the variable `di
    |
 LL |         for (key, value) in dict {
    |                             ^^^^
+note: this value implements `FnOnce`, which causes it to be moved when called
+  --> $DIR/issue-42065.rs:10:5
+   |
+LL |     debug_dump_dict();
+   |     ^^^^^^^^^^^^^^^
 
 error: aborting due to previous error
 
diff --git a/src/test/ui/codemap_tests/tab_3.stderr b/src/test/ui/codemap_tests/tab_3.stderr
index 97816a76004..614e69e89f6 100644
--- a/src/test/ui/codemap_tests/tab_3.stderr
+++ b/src/test/ui/codemap_tests/tab_3.stderr
@@ -4,10 +4,16 @@ error[E0382]: borrow of moved value: `some_vec`
 LL |     let some_vec = vec!["hi"];
    |         -------- move occurs because `some_vec` has type `std::vec::Vec<&str>`, which does not implement the `Copy` trait
 LL |     some_vec.into_iter();
-   |     -------- value moved here
+   |              ----------- `some_vec` moved due to this method call
 LL |     {
 LL |         println!("{:?}", some_vec);
    |                          ^^^^^^^^ value borrowed here after move
+   |
+note: this function consumes the receiver `self` by taking ownership of it, which moves `some_vec`
+  --> $SRC_DIR/libcore/iter/traits/collect.rs:LL:COL
+   |
+LL |     fn into_iter(self) -> Self::IntoIter;
+   |                  ^^^^
 
 error: aborting due to previous error
 
diff --git a/src/test/ui/issues-71798.rs b/src/test/ui/issues-71798.rs
index 08b10463d39..fecba721ac9 100644
--- a/src/test/ui/issues-71798.rs
+++ b/src/test/ui/issues-71798.rs
@@ -1,5 +1,5 @@
 fn test_ref(x: &u32) -> impl std::future::Future<Output = u32> + '_ {
-    *x //~^ ERROR the trait bound `u32: std::future::Future` is not satisfied
+    *x //~^ ERROR `u32` is not a future
 }
 
 fn main() {
diff --git a/src/test/ui/issues-71798.stderr b/src/test/ui/issues-71798.stderr
index 85da87914e7..b3b29a72641 100644
--- a/src/test/ui/issues-71798.stderr
+++ b/src/test/ui/issues-71798.stderr
@@ -4,14 +4,15 @@ error[E0425]: cannot find value `u` in this scope
 LL |     let _ = test_ref & u;
    |                        ^ not found in this scope
 
-error[E0277]: the trait bound `u32: std::future::Future` is not satisfied
+error[E0277]: `u32` is not a future
   --> $DIR/issues-71798.rs:1:25
    |
 LL | fn test_ref(x: &u32) -> impl std::future::Future<Output = u32> + '_ {
-   |                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the trait `std::future::Future` is not implemented for `u32`
+   |                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ `u32` is not a future
 LL |     *x
    |     -- this returned value is of type `u32`
    |
+   = help: the trait `std::future::Future` is not implemented for `u32`
    = note: the return type of a function must have a statically known size
 
 error: aborting due to 2 previous errors
diff --git a/src/test/ui/issues/issue-12127.stderr b/src/test/ui/issues/issue-12127.stderr
index 2283b1275d0..b759aa45e3e 100644
--- a/src/test/ui/issues/issue-12127.stderr
+++ b/src/test/ui/issues/issue-12127.stderr
@@ -2,10 +2,15 @@ error[E0382]: use of moved value: `f`
   --> $DIR/issue-12127.rs:11:9
    |
 LL |         f();
-   |         - value moved here
+   |         --- `f` moved due to this call
 LL |         f();
    |         ^ value used here after move
    |
+note: this value implements `FnOnce`, which causes it to be moved when called
+  --> $DIR/issue-12127.rs:10:9
+   |
+LL |         f();
+   |         ^
    = note: move occurs because `f` has type `[closure@$DIR/issue-12127.rs:8:24: 8:41 x:std::boxed::Box<isize>]`, which does not implement the `Copy` trait
 
 error: aborting due to previous error
diff --git a/src/test/ui/issues/issue-33941.rs b/src/test/ui/issues/issue-33941.rs
index ccaa6334856..4fb805b37e0 100644
--- a/src/test/ui/issues/issue-33941.rs
+++ b/src/test/ui/issues/issue-33941.rs
@@ -3,4 +3,5 @@ use std::collections::HashMap;
 fn main() {
     for _ in HashMap::new().iter().cloned() {} //~ ERROR type mismatch
     //~^ ERROR type mismatch
+    //~| ERROR type mismatch
 }
diff --git a/src/test/ui/issues/issue-33941.stderr b/src/test/ui/issues/issue-33941.stderr
index 734ae78f362..20335d2cdd6 100644
--- a/src/test/ui/issues/issue-33941.stderr
+++ b/src/test/ui/issues/issue-33941.stderr
@@ -17,6 +17,16 @@ LL |     for _ in HashMap::new().iter().cloned() {}
            found reference `&_`
    = note: required because of the requirements on the impl of `std::iter::Iterator` for `std::iter::Cloned<std::collections::hash_map::Iter<'_, _, _>>`
 
-error: aborting due to 2 previous errors
+error[E0271]: type mismatch resolving `<std::collections::hash_map::Iter<'_, _, _> as std::iter::Iterator>::Item == &_`
+  --> $DIR/issue-33941.rs:4:14
+   |
+LL |     for _ in HashMap::new().iter().cloned() {}
+   |              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ expected tuple, found reference
+   |
+   = note:  expected tuple `(&_, &_)`
+           found reference `&_`
+   = note: required because of the requirements on the impl of `std::iter::Iterator` for `std::iter::Cloned<std::collections::hash_map::Iter<'_, _, _>>`
+
+error: aborting due to 3 previous errors
 
 For more information about this error, try `rustc --explain E0271`.
diff --git a/src/test/ui/issues/issue-34721.stderr b/src/test/ui/issues/issue-34721.stderr
index 6cfed20f43a..b4cc1a0aa7e 100644
--- a/src/test/ui/issues/issue-34721.stderr
+++ b/src/test/ui/issues/issue-34721.stderr
@@ -5,14 +5,19 @@ LL |     pub fn baz<T: Foo>(x: T) -> T {
    |                        - move occurs because `x` has type `T`, which does not implement the `Copy` trait
 LL |         if 0 == 1 {
 LL |             bar::bar(x.zero())
-   |                      - value moved here
+   |                        ------ `x` moved due to this method call
 LL |         } else {
 LL |             x.zero()
-   |             - value moved here
+   |               ------ `x` moved due to this method call
 LL |         };
 LL |         x.zero()
    |         ^ value used here after move
    |
+note: this function consumes the receiver `self` by taking ownership of it, which moves `x`
+  --> $DIR/issue-34721.rs:4:13
+   |
+LL |     fn zero(self) -> Self;
+   |             ^^^^
 help: consider further restricting this bound
    |
 LL |     pub fn baz<T: Foo + Copy>(x: T) -> T {
diff --git a/src/test/ui/issues/issue-61108.stderr b/src/test/ui/issues/issue-61108.stderr
index 8523a6f6548..ba43f2d33ee 100644
--- a/src/test/ui/issues/issue-61108.stderr
+++ b/src/test/ui/issues/issue-61108.stderr
@@ -6,11 +6,17 @@ LL |     let mut bad_letters = vec!['e', 't', 'o', 'i'];
 LL |     for l in bad_letters {
    |              -----------
    |              |
-   |              value moved here
+   |              `bad_letters` moved due to this implicit call to `.into_iter()`
    |              help: consider borrowing to avoid moving into the for loop: `&bad_letters`
 ...
 LL |     bad_letters.push('s');
    |     ^^^^^^^^^^^ value borrowed here after move
+   |
+note: this function consumes the receiver `self` by taking ownership of it, which moves `bad_letters`
+  --> $SRC_DIR/libcore/iter/traits/collect.rs:LL:COL
+   |
+LL |     fn into_iter(self) -> Self::IntoIter;
+   |                  ^^^^
 
 error: aborting due to previous error
 
diff --git a/src/test/ui/issues/issue-64559.stderr b/src/test/ui/issues/issue-64559.stderr
index 3c685dc8d08..2c337bae130 100644
--- a/src/test/ui/issues/issue-64559.stderr
+++ b/src/test/ui/issues/issue-64559.stderr
@@ -6,12 +6,18 @@ LL |     let orig = vec![true];
 LL |     for _val in orig {}
    |                 ----
    |                 |
-   |                 value moved here
+   |                 `orig` moved due to this implicit call to `.into_iter()`
    |                 help: consider borrowing to avoid moving into the for loop: `&orig`
 LL |     let _closure = || orig;
    |                    ^^ ---- use occurs due to use in closure
    |                    |
    |                    value used here after move
+   |
+note: this function consumes the receiver `self` by taking ownership of it, which moves `orig`
+  --> $SRC_DIR/libcore/iter/traits/collect.rs:LL:COL
+   |
+LL |     fn into_iter(self) -> Self::IntoIter;
+   |                  ^^^^
 
 error: aborting due to previous error
 
diff --git a/src/test/ui/moves/move-fn-self-receiver.rs b/src/test/ui/moves/move-fn-self-receiver.rs
new file mode 100644
index 00000000000..6107f53fa19
--- /dev/null
+++ b/src/test/ui/moves/move-fn-self-receiver.rs
@@ -0,0 +1,74 @@
+use std::pin::Pin;
+use std::rc::Rc;
+use std::ops::Add;
+
+struct Foo;
+
+impl Add for Foo {
+    type Output = ();
+    fn add(self, _rhs: Self) -> () {}
+}
+
+impl Foo {
+    fn use_self(self) {}
+    fn use_box_self(self: Box<Self>) {}
+    fn use_pin_box_self(self: Pin<Box<Self>>) {}
+    fn use_rc_self(self: Rc<Self>) {}
+    fn use_mut_self(&mut self) -> &mut Self { self }
+}
+
+struct Container(Vec<bool>);
+
+impl Container {
+    fn custom_into_iter(self) -> impl Iterator<Item = bool> {
+        self.0.into_iter()
+    }
+}
+
+fn move_out(val: Container) {
+    val.0.into_iter().next();
+    val.0; //~ ERROR use of moved
+
+    let foo = Foo;
+    foo.use_self();
+    foo; //~ ERROR use of moved
+
+    let second_foo = Foo;
+    second_foo.use_self();
+    second_foo; //~ ERROR use of moved
+
+    let boxed_foo = Box::new(Foo);
+    boxed_foo.use_box_self();
+    boxed_foo; //~ ERROR use of moved
+
+    let pin_box_foo = Box::pin(Foo);
+    pin_box_foo.use_pin_box_self();
+    pin_box_foo; //~ ERROR use of moved
+
+    let mut mut_foo = Foo;
+    let ret = mut_foo.use_mut_self();
+    mut_foo; //~ ERROR cannot move out
+    ret;
+
+    let rc_foo = Rc::new(Foo);
+    rc_foo.use_rc_self();
+    rc_foo; //~ ERROR use of moved
+
+    let foo_add = Foo;
+    foo_add + Foo;
+    foo_add; //~ ERROR use of moved
+
+    let implicit_into_iter = vec![true];
+    for _val in implicit_into_iter {}
+    implicit_into_iter; //~ ERROR use of moved
+
+    let explicit_into_iter = vec![true];
+    for _val in explicit_into_iter.into_iter() {}
+    explicit_into_iter; //~ ERROR use of moved
+
+    let container = Container(vec![]);
+    for _val in container.custom_into_iter() {}
+    container; //~ ERROR use of moved
+}
+
+fn main() {}
diff --git a/src/test/ui/moves/move-fn-self-receiver.stderr b/src/test/ui/moves/move-fn-self-receiver.stderr
new file mode 100644
index 00000000000..4333e8a23e8
--- /dev/null
+++ b/src/test/ui/moves/move-fn-self-receiver.stderr
@@ -0,0 +1,158 @@
+error[E0382]: use of moved value: `val.0`
+  --> $DIR/move-fn-self-receiver.rs:30:5
+   |
+LL |     val.0.into_iter().next();
+   |           ----------- `val.0` moved due to this method call
+LL |     val.0;
+   |     ^^^^^ value used here after move
+   |
+note: this function consumes the receiver `self` by taking ownership of it, which moves `val.0`
+  --> $SRC_DIR/libcore/iter/traits/collect.rs:LL:COL
+   |
+LL |     fn into_iter(self) -> Self::IntoIter;
+   |                  ^^^^
+   = note: move occurs because `val.0` has type `std::vec::Vec<bool>`, which does not implement the `Copy` trait
+
+error[E0382]: use of moved value: `foo`
+  --> $DIR/move-fn-self-receiver.rs:34:5
+   |
+LL |     let foo = Foo;
+   |         --- move occurs because `foo` has type `Foo`, which does not implement the `Copy` trait
+LL |     foo.use_self();
+   |         ---------- `foo` moved due to this method call
+LL |     foo;
+   |     ^^^ value used here after move
+   |
+note: this function consumes the receiver `self` by taking ownership of it, which moves `foo`
+  --> $DIR/move-fn-self-receiver.rs:13:17
+   |
+LL |     fn use_self(self) {}
+   |                 ^^^^
+
+error[E0382]: use of moved value: `second_foo`
+  --> $DIR/move-fn-self-receiver.rs:38:5
+   |
+LL |     let second_foo = Foo;
+   |         ---------- move occurs because `second_foo` has type `Foo`, which does not implement the `Copy` trait
+LL |     second_foo.use_self();
+   |                ---------- `second_foo` moved due to this method call
+LL |     second_foo;
+   |     ^^^^^^^^^^ value used here after move
+
+error[E0382]: use of moved value: `boxed_foo`
+  --> $DIR/move-fn-self-receiver.rs:42:5
+   |
+LL |     let boxed_foo = Box::new(Foo);
+   |         --------- move occurs because `boxed_foo` has type `std::boxed::Box<Foo>`, which does not implement the `Copy` trait
+LL |     boxed_foo.use_box_self();
+   |               -------------- `boxed_foo` moved due to this method call
+LL |     boxed_foo;
+   |     ^^^^^^^^^ value used here after move
+   |
+note: this function consumes the receiver `self` by taking ownership of it, which moves `boxed_foo`
+  --> $DIR/move-fn-self-receiver.rs:14:21
+   |
+LL |     fn use_box_self(self: Box<Self>) {}
+   |                     ^^^^
+
+error[E0382]: use of moved value: `pin_box_foo`
+  --> $DIR/move-fn-self-receiver.rs:46:5
+   |
+LL |     let pin_box_foo = Box::pin(Foo);
+   |         ----------- move occurs because `pin_box_foo` has type `std::pin::Pin<std::boxed::Box<Foo>>`, which does not implement the `Copy` trait
+LL |     pin_box_foo.use_pin_box_self();
+   |                 ------------------ `pin_box_foo` moved due to this method call
+LL |     pin_box_foo;
+   |     ^^^^^^^^^^^ value used here after move
+   |
+note: this function consumes the receiver `self` by taking ownership of it, which moves `pin_box_foo`
+  --> $DIR/move-fn-self-receiver.rs:15:25
+   |
+LL |     fn use_pin_box_self(self: Pin<Box<Self>>) {}
+   |                         ^^^^
+
+error[E0505]: cannot move out of `mut_foo` because it is borrowed
+  --> $DIR/move-fn-self-receiver.rs:50:5
+   |
+LL |     let ret = mut_foo.use_mut_self();
+   |               ------- borrow of `mut_foo` occurs here
+LL |     mut_foo;
+   |     ^^^^^^^ move out of `mut_foo` occurs here
+LL |     ret;
+   |     --- borrow later used here
+
+error[E0382]: use of moved value: `rc_foo`
+  --> $DIR/move-fn-self-receiver.rs:55:5
+   |
+LL |     let rc_foo = Rc::new(Foo);
+   |         ------ move occurs because `rc_foo` has type `std::rc::Rc<Foo>`, which does not implement the `Copy` trait
+LL |     rc_foo.use_rc_self();
+   |            ------------- `rc_foo` moved due to this method call
+LL |     rc_foo;
+   |     ^^^^^^ value used here after move
+   |
+note: this function consumes the receiver `self` by taking ownership of it, which moves `rc_foo`
+  --> $DIR/move-fn-self-receiver.rs:16:20
+   |
+LL |     fn use_rc_self(self: Rc<Self>) {}
+   |                    ^^^^
+
+error[E0382]: use of moved value: `foo_add`
+  --> $DIR/move-fn-self-receiver.rs:59:5
+   |
+LL |     let foo_add = Foo;
+   |         ------- move occurs because `foo_add` has type `Foo`, which does not implement the `Copy` trait
+LL |     foo_add + Foo;
+   |     ------------- `foo_add` moved due to usage in operator
+LL |     foo_add;
+   |     ^^^^^^^ value used here after move
+   |
+note: calling this operator moves the left-hand side
+  --> $SRC_DIR/libcore/ops/arith.rs:LL:COL
+   |
+LL |     fn add(self, rhs: Rhs) -> Self::Output;
+   |            ^^^^
+
+error[E0382]: use of moved value: `implicit_into_iter`
+  --> $DIR/move-fn-self-receiver.rs:63:5
+   |
+LL |     let implicit_into_iter = vec![true];
+   |         ------------------ move occurs because `implicit_into_iter` has type `std::vec::Vec<bool>`, which does not implement the `Copy` trait
+LL |     for _val in implicit_into_iter {}
+   |                 ------------------
+   |                 |
+   |                 `implicit_into_iter` moved due to this implicit call to `.into_iter()`
+   |                 help: consider borrowing to avoid moving into the for loop: `&implicit_into_iter`
+LL |     implicit_into_iter;
+   |     ^^^^^^^^^^^^^^^^^^ value used here after move
+
+error[E0382]: use of moved value: `explicit_into_iter`
+  --> $DIR/move-fn-self-receiver.rs:67:5
+   |
+LL |     let explicit_into_iter = vec![true];
+   |         ------------------ move occurs because `explicit_into_iter` has type `std::vec::Vec<bool>`, which does not implement the `Copy` trait
+LL |     for _val in explicit_into_iter.into_iter() {}
+   |                                    ----------- `explicit_into_iter` moved due to this method call
+LL |     explicit_into_iter;
+   |     ^^^^^^^^^^^^^^^^^^ value used here after move
+
+error[E0382]: use of moved value: `container`
+  --> $DIR/move-fn-self-receiver.rs:71:5
+   |
+LL |     let container = Container(vec![]);
+   |         --------- move occurs because `container` has type `Container`, which does not implement the `Copy` trait
+LL |     for _val in container.custom_into_iter() {}
+   |                           ------------------ `container` moved due to this method call
+LL |     container;
+   |     ^^^^^^^^^ value used here after move
+   |
+note: this function consumes the receiver `self` by taking ownership of it, which moves `container`
+  --> $DIR/move-fn-self-receiver.rs:23:25
+   |
+LL |     fn custom_into_iter(self) -> impl Iterator<Item = bool> {
+   |                         ^^^^
+
+error: aborting due to 11 previous errors
+
+Some errors have detailed explanations: E0382, E0505.
+For more information about an error, try `rustc --explain E0382`.
diff --git a/src/test/ui/moves/moves-based-on-type-access-to-field.stderr b/src/test/ui/moves/moves-based-on-type-access-to-field.stderr
index 71a3c4506ea..142feb280d1 100644
--- a/src/test/ui/moves/moves-based-on-type-access-to-field.stderr
+++ b/src/test/ui/moves/moves-based-on-type-access-to-field.stderr
@@ -4,9 +4,15 @@ error[E0382]: borrow of moved value: `x`
 LL |     let x = vec!["hi".to_string()];
    |         - move occurs because `x` has type `std::vec::Vec<std::string::String>`, which does not implement the `Copy` trait
 LL |     consume(x.into_iter().next().unwrap());
-   |             - value moved here
+   |               ----------- `x` moved due to this method call
 LL |     touch(&x[0]);
    |            ^ value borrowed here after move
+   |
+note: this function consumes the receiver `self` by taking ownership of it, which moves `x`
+  --> $SRC_DIR/libcore/iter/traits/collect.rs:LL:COL
+   |
+LL |     fn into_iter(self) -> Self::IntoIter;
+   |                  ^^^^
 
 error: aborting due to previous error
 
diff --git a/src/test/ui/moves/moves-based-on-type-exprs.stderr b/src/test/ui/moves/moves-based-on-type-exprs.stderr
index 67fae606c4e..ff98aab50c9 100644
--- a/src/test/ui/moves/moves-based-on-type-exprs.stderr
+++ b/src/test/ui/moves/moves-based-on-type-exprs.stderr
@@ -104,9 +104,15 @@ error[E0382]: borrow of moved value: `x`
 LL |     let x = vec!["hi".to_string()];
    |         - move occurs because `x` has type `std::vec::Vec<std::string::String>`, which does not implement the `Copy` trait
 LL |     let _y = x.into_iter().next().unwrap();
-   |              - value moved here
+   |                ----------- `x` moved due to this method call
 LL |     touch(&x);
    |           ^^ value borrowed here after move
+   |
+note: this function consumes the receiver `self` by taking ownership of it, which moves `x`
+  --> $SRC_DIR/libcore/iter/traits/collect.rs:LL:COL
+   |
+LL |     fn into_iter(self) -> Self::IntoIter;
+   |                  ^^^^
 
 error[E0382]: borrow of moved value: `x`
   --> $DIR/moves-based-on-type-exprs.rs:83:11
@@ -114,9 +120,15 @@ error[E0382]: borrow of moved value: `x`
 LL |     let x = vec!["hi".to_string()];
    |         - move occurs because `x` has type `std::vec::Vec<std::string::String>`, which does not implement the `Copy` trait
 LL |     let _y = [x.into_iter().next().unwrap(); 1];
-   |               - value moved here
+   |                 ----------- `x` moved due to this method call
 LL |     touch(&x);
    |           ^^ value borrowed here after move
+   |
+note: this function consumes the receiver `self` by taking ownership of it, which moves `x`
+  --> $SRC_DIR/libcore/iter/traits/collect.rs:LL:COL
+   |
+LL |     fn into_iter(self) -> Self::IntoIter;
+   |                  ^^^^
 
 error: aborting due to 11 previous errors
 
diff --git a/src/test/ui/once-cant-call-twice-on-heap.stderr b/src/test/ui/once-cant-call-twice-on-heap.stderr
index 7133a32431a..8761b5261d5 100644
--- a/src/test/ui/once-cant-call-twice-on-heap.stderr
+++ b/src/test/ui/once-cant-call-twice-on-heap.stderr
@@ -4,10 +4,15 @@ error[E0382]: use of moved value: `blk`
 LL | fn foo<F:FnOnce()>(blk: F) {
    |                    --- move occurs because `blk` has type `F`, which does not implement the `Copy` trait
 LL |     blk();
-   |     --- value moved here
+   |     ----- `blk` moved due to this call
 LL |     blk();
    |     ^^^ value used here after move
    |
+note: this value implements `FnOnce`, which causes it to be moved when called
+  --> $DIR/once-cant-call-twice-on-heap.rs:8:5
+   |
+LL |     blk();
+   |     ^^^
 help: consider further restricting this bound
    |
 LL | fn foo<F:FnOnce() + Copy>(blk: F) {
diff --git a/src/test/ui/suggestions/async-fn-ctor-passed-as-arg-where-it-should-have-been-called.stderr b/src/test/ui/suggestions/async-fn-ctor-passed-as-arg-where-it-should-have-been-called.stderr
index 99ba4e2a646..11372494772 100644
--- a/src/test/ui/suggestions/async-fn-ctor-passed-as-arg-where-it-should-have-been-called.stderr
+++ b/src/test/ui/suggestions/async-fn-ctor-passed-as-arg-where-it-should-have-been-called.stderr
@@ -1,4 +1,4 @@
-error[E0277]: the trait bound `fn() -> impl std::future::Future {foo}: std::future::Future` is not satisfied
+error[E0277]: `fn() -> impl std::future::Future {foo}` is not a future
   --> $DIR/async-fn-ctor-passed-as-arg-where-it-should-have-been-called.rs:10:9
    |
 LL | async fn foo() {}
@@ -8,14 +8,15 @@ LL | fn bar(f: impl Future<Output=()>) {}
    |                ----------------- required by this bound in `bar`
 ...
 LL |     bar(foo);
-   |         ^^^ the trait `std::future::Future` is not implemented for `fn() -> impl std::future::Future {foo}`
+   |         ^^^ `fn() -> impl std::future::Future {foo}` is not a future
    |
+   = help: the trait `std::future::Future` is not implemented for `fn() -> impl std::future::Future {foo}`
 help: use parentheses to call the function
    |
 LL |     bar(foo());
    |            ^^
 
-error[E0277]: the trait bound `[closure@$DIR/async-fn-ctor-passed-as-arg-where-it-should-have-been-called.rs:11:25: 11:36]: std::future::Future` is not satisfied
+error[E0277]: `[closure@$DIR/async-fn-ctor-passed-as-arg-where-it-should-have-been-called.rs:11:25: 11:36]` is not a future
   --> $DIR/async-fn-ctor-passed-as-arg-where-it-should-have-been-called.rs:12:9
    |
 LL | fn bar(f: impl Future<Output=()>) {}
@@ -24,8 +25,9 @@ LL | fn bar(f: impl Future<Output=()>) {}
 LL |     let async_closure = async || ();
    |                         -------- consider calling this closure
 LL |     bar(async_closure);
-   |         ^^^^^^^^^^^^^ the trait `std::future::Future` is not implemented for `[closure@$DIR/async-fn-ctor-passed-as-arg-where-it-should-have-been-called.rs:11:25: 11:36]`
+   |         ^^^^^^^^^^^^^ `[closure@$DIR/async-fn-ctor-passed-as-arg-where-it-should-have-been-called.rs:11:25: 11:36]` is not a future
    |
+   = help: the trait `std::future::Future` is not implemented for `[closure@$DIR/async-fn-ctor-passed-as-arg-where-it-should-have-been-called.rs:11:25: 11:36]`
 help: use parentheses to call the closure
    |
 LL |     bar(async_closure());
diff --git a/src/test/ui/terminal-width/flag-human.rs b/src/test/ui/terminal-width/flag-human.rs
new file mode 100644
index 00000000000..e445a84fd01
--- /dev/null
+++ b/src/test/ui/terminal-width/flag-human.rs
@@ -0,0 +1,9 @@
+// compile-flags: -Z terminal-width=20
+
+// This test checks that `-Z terminal-width` effects the human error output by restricting it to an
+// arbitrarily low value so that the effect is visible.
+
+fn main() {
+    let _: () = 42;
+    //~^ ERROR mismatched types
+}
diff --git a/src/test/ui/terminal-width/flag-human.stderr b/src/test/ui/terminal-width/flag-human.stderr
new file mode 100644
index 00000000000..393dcf2b828
--- /dev/null
+++ b/src/test/ui/terminal-width/flag-human.stderr
@@ -0,0 +1,11 @@
+error[E0308]: mismatched types
+  --> $DIR/flag-human.rs:7:17
+   |
+LL | ..._: () = 42;
+   |       --   ^^ expected `()`, found integer
+   |       |
+   |       expected due to this
+
+error: aborting due to previous error
+
+For more information about this error, try `rustc --explain E0308`.
diff --git a/src/test/ui/terminal-width/flag-json.rs b/src/test/ui/terminal-width/flag-json.rs
new file mode 100644
index 00000000000..eabdc59dded
--- /dev/null
+++ b/src/test/ui/terminal-width/flag-json.rs
@@ -0,0 +1,9 @@
+// compile-flags: -Z terminal-width=20 --error-format=json
+
+// This test checks that `-Z terminal-width` effects the JSON error output by restricting it to an
+// arbitrarily low value so that the effect is visible.
+
+fn main() {
+    let _: () = 42;
+    //~^ ERROR mismatched types
+}
diff --git a/src/test/ui/terminal-width/flag-json.stderr b/src/test/ui/terminal-width/flag-json.stderr
new file mode 100644
index 00000000000..29730ccdd4e
--- /dev/null
+++ b/src/test/ui/terminal-width/flag-json.stderr
@@ -0,0 +1,32 @@
+{"message":"mismatched types","code":{"code":"E0308","explanation":"Expected type did not match the received type.
+
+Erroneous code example:
+
+```compile_fail,E0308
+let x: i32 = \"I am not a number!\";
+//     ~~~   ~~~~~~~~~~~~~~~~~~~~
+//      |             |
+//      |    initializing expression;
+//      |    compiler infers type `&str`
+//      |
+//    type `i32` assigned to variable `x`
+```
+
+This error occurs when the compiler is unable to infer the concrete type of a
+variable. It can occur in several cases, the most common being a mismatch
+between two types: the type the author explicitly assigned, and the type the
+compiler inferred.
+"},"level":"error","spans":[{"file_name":"$DIR/flag-json.rs","byte_start":244,"byte_end":246,"line_start":7,"line_end":7,"column_start":17,"column_end":19,"is_primary":true,"text":[{"text":"    let _: () = 42;","highlight_start":17,"highlight_end":19}],"label":"expected `()`, found integer","suggested_replacement":null,"suggestion_applicability":null,"expansion":null},{"file_name":"$DIR/flag-json.rs","byte_start":239,"byte_end":241,"line_start":7,"line_end":7,"column_start":12,"column_end":14,"is_primary":false,"text":[{"text":"    let _: () = 42;","highlight_start":12,"highlight_end":14}],"label":"expected due to this","suggested_replacement":null,"suggestion_applicability":null,"expansion":null}],"children":[],"rendered":"error[E0308]: mismatched types
+  --> $DIR/flag-json.rs:7:17
+   |
+LL | ..._: () = 42;
+   |       --   ^^ expected `()`, found integer
+   |       |
+   |       expected due to this
+
+"}
+{"message":"aborting due to previous error","code":null,"level":"error","spans":[],"children":[],"rendered":"error: aborting due to previous error
+
+"}
+{"message":"For more information about this error, try `rustc --explain E0308`.","code":null,"level":"failure-note","spans":[],"children":[],"rendered":"For more information about this error, try `rustc --explain E0308`.
+"}
diff --git a/src/test/ui/unboxed-closures/unboxed-closures-infer-fnonce-call-twice.stderr b/src/test/ui/unboxed-closures/unboxed-closures-infer-fnonce-call-twice.stderr
index 0b9aa61a765..ab6f0651846 100644
--- a/src/test/ui/unboxed-closures/unboxed-closures-infer-fnonce-call-twice.stderr
+++ b/src/test/ui/unboxed-closures/unboxed-closures-infer-fnonce-call-twice.stderr
@@ -2,7 +2,7 @@ error[E0382]: use of moved value: `tick`
   --> $DIR/unboxed-closures-infer-fnonce-call-twice.rs:10:5
    |
 LL |     tick();
-   |     ---- value moved here
+   |     ------ `tick` moved due to this call
 LL |     tick();
    |     ^^^^ value used here after move
    |
@@ -11,6 +11,11 @@ note: closure cannot be invoked more than once because it moves the variable `co
    |
 LL |     let tick = || mem::drop(counter);
    |                             ^^^^^^^
+note: this value implements `FnOnce`, which causes it to be moved when called
+  --> $DIR/unboxed-closures-infer-fnonce-call-twice.rs:9:5
+   |
+LL |     tick();
+   |     ^^^^
 
 error: aborting due to previous error
 
diff --git a/src/test/ui/unboxed-closures/unboxed-closures-infer-fnonce-move-call-twice.stderr b/src/test/ui/unboxed-closures/unboxed-closures-infer-fnonce-move-call-twice.stderr
index 20773d561f9..8d70a2b1760 100644
--- a/src/test/ui/unboxed-closures/unboxed-closures-infer-fnonce-move-call-twice.stderr
+++ b/src/test/ui/unboxed-closures/unboxed-closures-infer-fnonce-move-call-twice.stderr
@@ -2,7 +2,7 @@ error[E0382]: use of moved value: `tick`
   --> $DIR/unboxed-closures-infer-fnonce-move-call-twice.rs:10:5
    |
 LL |     tick();
-   |     ---- value moved here
+   |     ------ `tick` moved due to this call
 LL |     tick();
    |     ^^^^ value used here after move
    |
@@ -11,6 +11,11 @@ note: closure cannot be invoked more than once because it moves the variable `co
    |
 LL |     let tick = move || mem::drop(counter);
    |                                  ^^^^^^^
+note: this value implements `FnOnce`, which causes it to be moved when called
+  --> $DIR/unboxed-closures-infer-fnonce-move-call-twice.rs:9:5
+   |
+LL |     tick();
+   |     ^^^^
 
 error: aborting due to previous error
 
diff --git a/src/test/ui/unop-move-semantics.stderr b/src/test/ui/unop-move-semantics.stderr
index e0499cfe95c..dd54c222f64 100644
--- a/src/test/ui/unop-move-semantics.stderr
+++ b/src/test/ui/unop-move-semantics.stderr
@@ -4,11 +4,16 @@ error[E0382]: borrow of moved value: `x`
 LL | fn move_then_borrow<T: Not<Output=T> + Clone>(x: T) {
    |                                               - move occurs because `x` has type `T`, which does not implement the `Copy` trait
 LL |     !x;
-   |      - value moved here
+   |     -- `x` moved due to usage in operator
 LL | 
 LL |     x.clone();
    |     ^ value borrowed here after move
    |
+note: calling this operator moves the left-hand side
+  --> $SRC_DIR/libcore/ops/bit.rs:LL:COL
+   |
+LL |     fn not(self) -> Self::Output;
+   |            ^^^^
 help: consider further restricting this bound
    |
 LL | fn move_then_borrow<T: Not<Output=T> + Clone + Copy>(x: T) {
diff --git a/src/test/ui/unsized-locals/borrow-after-move.stderr b/src/test/ui/unsized-locals/borrow-after-move.stderr
index 110edab69be..906b543e421 100644
--- a/src/test/ui/unsized-locals/borrow-after-move.stderr
+++ b/src/test/ui/unsized-locals/borrow-after-move.stderr
@@ -37,10 +37,16 @@ error[E0382]: borrow of moved value: `y`
 LL |         let y = *x;
    |             - move occurs because `y` has type `str`, which does not implement the `Copy` trait
 LL |         y.foo();
-   |         - value moved here
+   |           ----- `y` moved due to this method call
 ...
 LL |         println!("{}", &y);
    |                        ^^ value borrowed here after move
+   |
+note: this function consumes the receiver `self` by taking ownership of it, which moves `y`
+  --> $DIR/borrow-after-move.rs:4:12
+   |
+LL |     fn foo(self) -> String;
+   |            ^^^^
 
 error[E0382]: borrow of moved value: `x`
   --> $DIR/borrow-after-move.rs:39:24
diff --git a/src/test/ui/unsized-locals/double-move.stderr b/src/test/ui/unsized-locals/double-move.stderr
index 5b936fb6447..49b2031c6b9 100644
--- a/src/test/ui/unsized-locals/double-move.stderr
+++ b/src/test/ui/unsized-locals/double-move.stderr
@@ -34,9 +34,15 @@ error[E0382]: use of moved value: `y`
 LL |         let y = *x;
    |             - move occurs because `y` has type `str`, which does not implement the `Copy` trait
 LL |         y.foo();
-   |         - value moved here
+   |           ----- `y` moved due to this method call
 LL |         y.foo();
    |         ^ value used here after move
+   |
+note: this function consumes the receiver `self` by taking ownership of it, which moves `y`
+  --> $DIR/double-move.rs:4:12
+   |
+LL |     fn foo(self) -> String;
+   |            ^^^^
 
 error[E0382]: use of moved value: `x`
   --> $DIR/double-move.rs:45:9
diff --git a/src/test/ui/use/use-after-move-self-based-on-type.stderr b/src/test/ui/use/use-after-move-self-based-on-type.stderr
index 9bf1175430c..b9440f4de07 100644
--- a/src/test/ui/use/use-after-move-self-based-on-type.stderr
+++ b/src/test/ui/use/use-after-move-self-based-on-type.stderr
@@ -4,9 +4,15 @@ error[E0382]: use of moved value: `self`
 LL |     pub fn foo(self) -> isize {
    |                ---- move occurs because `self` has type `S`, which does not implement the `Copy` trait
 LL |         self.bar();
-   |         ---- value moved here
+   |              ----- `self` moved due to this method call
 LL |         return self.x;
    |                ^^^^^^ value used here after move
+   |
+note: this function consumes the receiver `self` by taking ownership of it, which moves `self`
+  --> $DIR/use-after-move-self-based-on-type.rs:15:16
+   |
+LL |     pub fn bar(self) {}
+   |                ^^^^
 
 error: aborting due to previous error
 
diff --git a/src/test/ui/use/use-after-move-self.stderr b/src/test/ui/use/use-after-move-self.stderr
index 3be0a65550b..3da53b024db 100644
--- a/src/test/ui/use/use-after-move-self.stderr
+++ b/src/test/ui/use/use-after-move-self.stderr
@@ -4,9 +4,15 @@ error[E0382]: use of moved value: `self`
 LL |     pub fn foo(self) -> isize {
    |                ---- move occurs because `self` has type `S`, which does not implement the `Copy` trait
 LL |         self.bar();
-   |         ---- value moved here
+   |              ----- `self` moved due to this method call
 LL |         return *self.x;
    |                ^^^^^^^ value used here after move
+   |
+note: this function consumes the receiver `self` by taking ownership of it, which moves `self`
+  --> $DIR/use-after-move-self.rs:13:16
+   |
+LL |     pub fn bar(self) {}
+   |                ^^^^
 
 error: aborting due to previous error
 
diff --git a/src/test/ui/walk-struct-literal-with.stderr b/src/test/ui/walk-struct-literal-with.stderr
index eeb594a21f3..ece63a2b819 100644
--- a/src/test/ui/walk-struct-literal-with.stderr
+++ b/src/test/ui/walk-struct-literal-with.stderr
@@ -4,9 +4,15 @@ error[E0382]: borrow of moved value: `start`
 LL |     let start = Mine{test:"Foo".to_string(), other_val:0};
    |         ----- move occurs because `start` has type `Mine`, which does not implement the `Copy` trait
 LL |     let end = Mine{other_val:1, ..start.make_string_bar()};
-   |                                   ----- value moved here
+   |                                         ----------------- `start` moved due to this method call
 LL |     println!("{}", start.test);
    |                    ^^^^^^^^^^ value borrowed here after move
+   |
+note: this function consumes the receiver `self` by taking ownership of it, which moves `start`
+  --> $DIR/walk-struct-literal-with.rs:7:28
+   |
+LL |     fn make_string_bar(mut self) -> Mine{
+   |                            ^^^^
 
 error: aborting due to previous error