Confusing errors in Rust 1.78

[ehuss]

Running cargo test in this repo is producing errors in beta and nightly:

     Running tests/integration.rs (target/debug/deps/integration-2e04e0a1a5df77ee)
tests/integrations/basic-bin/Cargo.toml ... ok
tests/integrations/cargo-run/Cargo.toml ... ok
tests/integrations/basic-fail-mode/Cargo.toml ... ok
tests/integrations/basic-fail/Cargo.toml ... ok
tests/integrations/basic/Cargo.toml ... FAILED

FAILED TEST: tests/integrations/basic/Cargo.toml
command: BLESS="" RUST_BACKTRACE="0" RUST_TEST_THREADS="1" "/Users/eric/.rustup/toolchains/nightly-aarch64-apple-darwin/bin/cargo" "test" "--color" "never" "--quiet" "--jobs" "1" "--no-fail-fast" "--target-dir" "/Users/eric/Proj/rust/ui_test/target/ui/tests/integrations/basic" "--manifest-path" "tests/integrations/basic/Cargo.toml"

error: pass test got exit status: 101, but expected 0

full stderr:
Error: tests failed

Location:
    /Users/eric/Proj/rust/ui_test/src/lib.rs:310:13
error: test failed, to rerun pass `--test ui_tests`

Caused by:
  process didn't exit successfully: `/Users/eric/Proj/rust/ui_test/target/ui/tests/integrations/basic/debug/deps/ui_tests-43d30a08ecf8c2ba` (exit status: 1)
error: 1 target failed:
    `--test ui_tests`

full stdout:

running 0 tests

test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s


running 3 tests
...
test result: ok. 3 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 2.85s

Building dependencies ... ok
Building aux file tests/actual_tests/auxiliary/derive_proc_macro.rs ... ok
tests/actual_tests/aux_derive.rs ... ok
Building aux file tests/actual_tests/auxiliary/the_proc_macro.rs ... ok
tests/actual_tests/aux_proc_macro.rs ... ok
tests/actual_tests/dep_derive.rs ... ok
tests/actual_tests/error_above.rs ... ok
tests/actual_tests/executable.rs ... ok
tests/actual_tests/foomp-rustfix.rs ... ok
tests/actual_tests/foomp.rs ... ok
tests/actual_tests/joined_above.rs ... FAILED
tests/actual_tests/joined_below.rs ... FAILED
tests/actual_tests/joined_mixed.rs ... FAILED
tests/actual_tests/mac_span.rs ... ok
tests/actual_tests/match_diagnostic_code.rs ... ok
tests/actual_tests/no_rustfix.rs ... ok
tests/actual_tests/stdin.rs ... ok
tests/actual_tests/unicode.rs ... ok
tests/actual_tests/windows_paths.rs ... ok
tests/actual_tests/subdir/aux_proc_macro.rs ... ok

FAILED TEST: tests/actual_tests/joined_above.rs
command: "rustc" "--error-format=json" "--out-dir" "/Users/eric/Proj/rust/ui_test/tests/integrations/basic/../../../target/.tmpobQRri/tests/actual_tests" "tests/actual_tests/joined_above.fixed" "--extern" "serde_derive=/Users/eric/Proj/rust/ui_test/tests/integrations/basic/../../../target/.tmpobQRri/debug/deps/libserde_derive-f57f7b7b75be9e67.dylib" "--extern" "basic=/Users/eric/Proj/rust/ui_test/tests/integrations/basic/../../../target/.tmpobQRri/aarch64-apple-darwin/debug/libbasic.rlib" "--extern" "basic=/Users/eric/Proj/rust/ui_test/tests/integrations/basic/../../../target/.tmpobQRri/aarch64-apple-darwin/debug/deps/libbasic-0a5b077303e4b85e.rmeta" "-L" "/Users/eric/Proj/rust/ui_test/tests/integrations/basic/../../../target/.tmpobQRri/aarch64-apple-darwin/debug" "-L" "/Users/eric/Proj/rust/ui_test/tests/integrations/basic/../../../target/.tmpobQRri/debug/build/proc-macro2-c56662e4d43c7009" "-L" "/Users/eric/Proj/rust/ui_test/tests/integrations/basic/../../../target/.tmpobQRri/debug/deps" "-L" "/Users/eric/Proj/rust/ui_test/tests/integrations/basic/../../../target/.tmpobQRri/aarch64-apple-darwin/debug/deps" "--edition" "2021" "--crate-name" "joined_above"

error: rustfix failed with exit status: 1

full stderr:
error: unused variable: `x`
 --> tests/actual_tests/joined_above.fixed:6:9
  |
6 |     let x = 0u32;
  |         ^ help: if this is intentional, prefix it with an underscore: `_x`
  |
note: the lint level is defined here
 --> tests/actual_tests/joined_above.fixed:1:21
  |
1 | #![deny(unused_mut, unused_variables)]
  |                     ^^^^^^^^^^^^^^^^

error: aborting due to 1 previous error


full stdout:



FAILED TEST: tests/actual_tests/joined_below.rs
command: "rustc" "--error-format=json" "--out-dir" "/Users/eric/Proj/rust/ui_test/tests/integrations/basic/../../../target/.tmpobQRri/tests/actual_tests" "tests/actual_tests/joined_below.fixed" "--extern" "serde_derive=/Users/eric/Proj/rust/ui_test/tests/integrations/basic/../../../target/.tmpobQRri/debug/deps/libserde_derive-f57f7b7b75be9e67.dylib" "--extern" "basic=/Users/eric/Proj/rust/ui_test/tests/integrations/basic/../../../target/.tmpobQRri/aarch64-apple-darwin/debug/libbasic.rlib" "--extern" "basic=/Users/eric/Proj/rust/ui_test/tests/integrations/basic/../../../target/.tmpobQRri/aarch64-apple-darwin/debug/deps/libbasic-0a5b077303e4b85e.rmeta" "-L" "/Users/eric/Proj/rust/ui_test/tests/integrations/basic/../../../target/.tmpobQRri/aarch64-apple-darwin/debug" "-L" "/Users/eric/Proj/rust/ui_test/tests/integrations/basic/../../../target/.tmpobQRri/debug/build/proc-macro2-c56662e4d43c7009" "-L" "/Users/eric/Proj/rust/ui_test/tests/integrations/basic/../../../target/.tmpobQRri/debug/deps" "-L" "/Users/eric/Proj/rust/ui_test/tests/integrations/basic/../../../target/.tmpobQRri/aarch64-apple-darwin/debug/deps" "--edition" "2021" "--crate-name" "joined_below"

error: rustfix failed with exit status: 1

full stderr:
error: unused variable: `x`
 --> tests/actual_tests/joined_below.fixed:4:9
  |
4 |     let x = 0u32;
  |         ^ help: if this is intentional, prefix it with an underscore: `_x`
  |
note: the lint level is defined here
 --> tests/actual_tests/joined_below.fixed:1:21
  |
1 | #![deny(unused_mut, unused_variables)]
  |                     ^^^^^^^^^^^^^^^^

error: aborting due to 1 previous error


full stdout:



FAILED TEST: tests/actual_tests/joined_mixed.rs
command: "rustc" "--error-format=json" "--out-dir" "/Users/eric/Proj/rust/ui_test/tests/integrations/basic/../../../target/.tmpobQRri/tests/actual_tests" "tests/actual_tests/joined_mixed.fixed" "--extern" "serde_derive=/Users/eric/Proj/rust/ui_test/tests/integrations/basic/../../../target/.tmpobQRri/debug/deps/libserde_derive-f57f7b7b75be9e67.dylib" "--extern" "basic=/Users/eric/Proj/rust/ui_test/tests/integrations/basic/../../../target/.tmpobQRri/aarch64-apple-darwin/debug/libbasic.rlib" "--extern" "basic=/Users/eric/Proj/rust/ui_test/tests/integrations/basic/../../../target/.tmpobQRri/aarch64-apple-darwin/debug/deps/libbasic-0a5b077303e4b85e.rmeta" "-L" "/Users/eric/Proj/rust/ui_test/tests/integrations/basic/../../../target/.tmpobQRri/aarch64-apple-darwin/debug" "-L" "/Users/eric/Proj/rust/ui_test/tests/integrations/basic/../../../target/.tmpobQRri/debug/build/proc-macro2-c56662e4d43c7009" "-L" "/Users/eric/Proj/rust/ui_test/tests/integrations/basic/../../../target/.tmpobQRri/debug/deps" "-L" "/Users/eric/Proj/rust/ui_test/tests/integrations/basic/../../../target/.tmpobQRri/aarch64-apple-darwin/debug/deps" "--edition" "2021" "--crate-name" "joined_mixed"

error: rustfix failed with exit status: 1

full stderr:
error: unused variable: `x`
 --> tests/actual_tests/joined_mixed.fixed:4:9
  |
4 |     let x = 0u32;
  |         ^ help: if this is intentional, prefix it with an underscore: `_x`
  |
note: the lint level is defined here
 --> tests/actual_tests/joined_mixed.fixed:1:21
  |
1 | #![deny(unused_mut, unused_variables)]
  |                     ^^^^^^^^^^^^^^^^

error: unused variable: `y`
  --> tests/actual_tests/joined_mixed.fixed:10:9
   |
10 |     let y = 0u32;
   |         ^ help: if this is intentional, prefix it with an underscore: `_y`

error: aborting due to 2 previous errors


full stdout:


FAILURES:
    tests/actual_tests/joined_above.rs
    tests/actual_tests/joined_below.rs
    tests/actual_tests/joined_mixed.rs

test result: FAIL. 3 failed; 14 passed;


running 0 tests

test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s



FAILURES:
    tests/integrations/basic/Cargo.toml

test result: FAIL. 1 failed; 4 passed; 5 filtered out;

Error: tests failed

Location:
    /Users/eric/Proj/rust/ui_test/src/lib.rs:310:13
error: test failed, to rerun pass `--test integration`

Caused by:
  process didn't exit successfully: `/Users/eric/Proj/rust/ui_test/target/debug/deps/integration-2e04e0a1a5df77ee` (exit status: 1)

Pretty much all it says is rustfix failed with exit status: 1 which doesn't really say what went wrong or how to fix it.

[oli-obk]

Oh yea, what this wants to say is that the rustfixed program still errors