4 LL | impl<T> Allocator for DefaultAllocator {
5    |      ^ unconstrained type parameter
6    |
- help: either remove the type parameter T, or make use of it, for example
+ help: either remove the unused type parameter `T`, or make use of it
8    |
9 LL - impl<T> Allocator for DefaultAllocator {
10 LL + impl Allocator for DefaultAllocator {


The actual stderr differed from the expected stderr
To update references, rerun the tests and pass the `--bless` flag
To only update this specific test, also pass `--test-args not-wf-ambiguous-normalization.rs`

error: 1 errors occurred comparing output.
status: exit status: 1
command: env -u RUSTC_LOG_COLOR RUSTC_ICE="0" RUST_BACKTRACE="short" "/checkout/obj/build/aarch64-unknown-linux-gnu/stage2/bin/rustdoc" "/checkout/tests/rustdoc-ui/not-wf-ambiguous-normalization.rs" "-Zthreads=1" "-Zsimulate-remapped-rust-src-base=/rustc/FAKE_PREFIX" "-Ztranslate-remapped-path-to-local-path=no" "-Z" "ignore-directory-in-diagnostics-source-blocks=/cargo" "-Z" "ignore-directory-in-diagnostics-source-blocks=/checkout/vendor" "--sysroot" "/checkout/obj/build/aarch64-unknown-linux-gnu/stage2" "--target=aarch64-unknown-linux-gnu" "--check-cfg" "cfg(test,FALSE)" "--error-format" "json" "--json" "future-incompat" "-Ccodegen-units=1" "-Zui-testing" "-Zdeduplicate-diagnostics=no" "-Zwrite-long-types-to-disk=no" "-Cstrip=debuginfo" "-o" "/checkout/obj/build/aarch64-unknown-linux-gnu/test/rustdoc-ui/not-wf-ambiguous-normalization" "-A" "internal_features" "-A" "unused_parens" "-A" "unused_braces" "-Cdebuginfo=0" "-Znormalize-docs"
stdout: none
--- stderr -------------------------------
error[E0207]: the type parameter `T` is not constrained by the impl trait, self type, or predicates
##[error]  --> /checkout/tests/rustdoc-ui/not-wf-ambiguous-normalization.rs:14:6
   |
---
---- [ui] tests/rustdoc-ui/synthetic-auto-trait-impls/unconstrained-param-in-impl-ambiguity.rs stdout ----
Saved the actual stderr to `/checkout/obj/build/aarch64-unknown-linux-gnu/test/rustdoc-ui/synthetic-auto-trait-impls/unconstrained-param-in-impl-ambiguity/unconstrained-param-in-impl-ambiguity.stderr`
diff of stderr:

4 LL | unsafe impl<Q: Trait> Send for Inner {}
5    |             ^ unconstrained type parameter
6    |
- help: either remove the type parameter Q, or make use of it, for example
+ help: either remove the unused type parameter `Q`, or make use of it
8    |
9 LL - unsafe impl<Q: Trait> Send for Inner {}
10 LL + unsafe impl Send for Inner {}


The actual stderr differed from the expected stderr
To update references, rerun the tests and pass the `--bless` flag
To only update this specific test, also pass `--test-args synthetic-auto-trait-impls/unconstrained-param-in-impl-ambiguity.rs`

error: 1 errors occurred comparing output.
status: exit status: 1
command: env -u RUSTC_LOG_COLOR RUSTC_ICE="0" RUST_BACKTRACE="short" "/checkout/obj/build/aarch64-unknown-linux-gnu/stage2/bin/rustdoc" "/checkout/tests/rustdoc-ui/synthetic-auto-trait-impls/unconstrained-param-in-impl-ambiguity.rs" "-Zthreads=1" "-Zsimulate-remapped-rust-src-base=/rustc/FAKE_PREFIX" "-Ztranslate-remapped-path-to-local-path=no" "-Z" "ignore-directory-in-diagnostics-source-blocks=/cargo" "-Z" "ignore-directory-in-diagnostics-source-blocks=/checkout/vendor" "--sysroot" "/checkout/obj/build/aarch64-unknown-linux-gnu/stage2" "--target=aarch64-unknown-linux-gnu" "--check-cfg" "cfg(test,FALSE)" "--error-format" "json" "--json" "future-incompat" "-Ccodegen-units=1" "-Zui-testing" "-Zdeduplicate-diagnostics=no" "-Zwrite-long-types-to-disk=no" "-Cstrip=debuginfo" "-o" "/checkout/obj/build/aarch64-unknown-linux-gnu/test/rustdoc-ui/synthetic-auto-trait-impls/unconstrained-param-in-impl-ambiguity" "-A" "internal_features" "-A" "unused_parens" "-A" "unused_braces" "-Cdebuginfo=0"
stdout: none
--- stderr -------------------------------
error[E0207]: the type parameter `Q` is not constrained by the impl trait, self type, or predicates
##[error]  --> /checkout/tests/rustdoc-ui/synthetic-auto-trait-impls/unconstrained-param-in-impl-ambiguity.rs:7:13
   |
LL | unsafe impl<Q: Trait> Send for Inner {}
   |             ^ unconstrained type parameter
   |
help: either remove the unused type parameter `Q`, or make use of it
   |
LL - unsafe impl<Q: Trait> Send for Inner {}
LL + unsafe impl Send for Inner {}
   |
LL | unsafe impl<Q: Trait> Send for Inner<Q> {}
   |                                     +++

error: aborting due to 1 previous error

For more information about this error, try `rustc --explain E0207`.