Tests do not pass with Rust 1.32

[glasserc]

I'm not sure, but I think cbindgen needs Rust nightly now, even though the README says 1.32+.

cargo test produces:

---- test_expand_no_default_features stdout ----
Running: "/home/ethan/tmp/software/cbindgen/target/debug/cbindgen" "--lang" "c" "--style" "type" "-o" "/home/ethan/tmp/software/cbindgen/tests/expectations/expand_no_default_features.c" "/home/ethan/tmp/software/cbindgen/tests/rust/expand_no_default_features"
thread 'test_expand_no_default_features' panicked at 'cbindgen failed: "/home/ethan/tmp/software/cbindgen/tests/expectations/expand_no_default_features.c"', tests/tests.rs:54:5

---- test_expand_features stdout ----
Running: "/home/ethan/tmp/software/cbindgen/target/debug/cbindgen" "--lang" "c" "--style" "type" "-o" "/home/ethan/tmp/software/cbindgen/tests/expectations/expand_features.c" "/home/ethan/tmp/software/cbindgen/tests/rust/expand_features"
thread 'test_expand_features' panicked at 'cbindgen failed: "/home/ethan/tmp/software/cbindgen/tests/expectations/expand_features.c"', tests/tests.rs:54:5
note: Run with `RUST_BACKTRACE=1` for a backtrace.

---- test_expand_default_features stdout ----
Running: "/home/ethan/tmp/software/cbindgen/target/debug/cbindgen" "--lang" "c" "--style" "type" "-o" "/home/ethan/tmp/software/cbindgen/tests/expectations/expand_default_features.c" "/home/ethan/tmp/software/cbindgen/tests/rust/expand_default_features"
thread 'test_expand_default_features' panicked at 'cbindgen failed: "/home/ethan/tmp/software/cbindgen/tests/expectations/expand_default_features.c"', tests/tests.rs:54:5

---- test_expand stdout ----
Running: "/home/ethan/tmp/software/cbindgen/target/debug/cbindgen" "--lang" "c" "--style" "type" "-o" "/home/ethan/tmp/software/cbindgen/tests/expectations/expand.c" "/home/ethan/tmp/software/cbindgen/tests/rust/expand"
thread 'test_expand' panicked at 'cbindgen failed: "/home/ethan/tmp/software/cbindgen/tests/expectations/expand.c"', tests/tests.rs:54:5


failures:
    test_expand
    test_expand_default_features
    test_expand_features
    test_expand_no_default_features

test result: FAILED. 66 passed; 4 failed; 0 ignored; 0 measured; 0 filtered out

error: test failed, to rerun pass '--test tests'

I tried this to rerun a failing test:

> cargo run tests/rust/expand
    Finished dev [unoptimized + debuginfo] target(s) in 0.05s
     Running `target/debug/cbindgen tests/rust/expand`
ERROR: Parsing crate `expand`: couldn't run `cargo rustc --pretty=expanded`: Compile("   Compiling expand v0.1.0 (/home/ethan/tmp/software/cbindgen/tests/rust/expand)\nerror: the option `Z` is only accepted on the nightly compiler\n\nerror: Could not compile `expand`.\n\nTo learn more, run the command again with --verbose.\n")
ERROR: Couldn't generate bindings for tests/rust/expand.

[kvark]

Seeing this as well. Interestingly, the CI log doesn't even run anything:

test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out

[emilio]

This is only for the cargo expand tests, right?

[kvark]

Correct, the failures are only about expand.

[andir]

Also seeing the same failure while trying to bump the package for NixOS.

test bindgen::mangle::generics ... ok

test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out

     Running target/debug/deps/tests-d4f737317c9e9611

running 70 tests
test test_assoc_const_conflict ... ok
test test_alias ... ok
test test_assoc_constant ... ok
test test_array ... ok
test test_bitflags ... ok
test test_asserted_cast ... ok
test test_annotation ... ok
test test_associated_in_body ... ok
test test_body ... ok
test test_cfg_field ... ok
test test_cfg_2 ... ok
test test_const_conflict ... ok
test test_cfg ... ok
test test_cdecl ... ok
test test_const_transparent ... ok
test test_constant ... ok
test test_docstyle_doxy ... ok
test test_docstyle_auto ... ok
test test_docstyle_c99 ... ok
test test_display_list ... ok
test test_destructor_and_copy_ctor ... ok
test test_derive_eq ... ok
test test_enum ... ok
test test_euclid ... ok
test test_extern ... ok
test test_extern_2 ... ok
test test_expand_default_features ... FAILED
test test_expand_features ... FAILED
test test_expand ... FAILED
test test_expand_no_default_features ... FAILED
test test_fns ... ok
test test_external_workspace_child ... ok
test test_global_attr ... ok
test test_inner_mod ... ok
test test_include_item ... ok
test test_include_specific ... ok
test test_item_types ... ok
test test_include ... ok
test test_item_types_renamed ... ok
test test_lifetime_arg ... ok
test test_monomorph_2 ... ok
test test_monomorph_1 ... ok
test test_monomorph_3 ... ok
test test_must_use ... ok
test test_mod_attr ... ok
test test_namespace_constant ... ok
test test_namespaces_constant ... ok
test test_mod_path ... ok
test test_no_includes ... ok
test test_nested_import ... ok
test test_nonnull ... ok
test test_prefix ... ok
test test_prefixed_struct_literal_deep ... ok
test test_prefixed_struct_literal ... ok
test test_rename ... ok
test test_renaming_overrides_prefixing ... ok
test test_rename_crate ... ok
test test_reserved ... ok
test test_static ... ok
test test_simplify_option_ptr ... ok
test test_std_lib ... ok
test test_struct ... ok
test test_struct_literal ... ok
test test_style_crash ... ok
test test_transform_op ... ok
test test_typedef ... ok
test test_union ... ok
test test_va_list ... ok
test test_transparent ... ok
test test_workspace ... ok

failures:

---- test_expand_default_features stdout ----
Running: "/build/source/target/debug/cbindgen" "--lang" "c" "--style" "type" "-o" "/build/source/tests/expectations/expand_default_features.c" "/build/source/tests/rust/expand_default_features"
thread 'test_expand_default_features' panicked at 'cbindgen failed: "/build/source/tests/expectations/expand_default_features.c"', tests/tests.rs:54:5

---- test_expand_features stdout ----
Running: "/build/source/target/debug/cbindgen" "--lang" "c" "--style" "type" "-o" "/build/source/tests/expectations/expand_features.c" "/build/source/tests/rust/expand_features"
thread 'test_expand_features' panicked at 'cbindgen failed: "/build/source/tests/expectations/expand_features.c"', tests/tests.rs:54:5
note: Run with `RUST_BACKTRACE=1` environment variable to display a backtrace.

---- test_expand stdout ----
Running: "/build/source/target/debug/cbindgen" "--lang" "c" "--style" "type" "-o" "/build/source/tests/expectations/expand.c" "/build/source/tests/rust/expand"
thread 'test_expand' panicked at 'cbindgen failed: "/build/source/tests/expectations/expand.c"', tests/tests.rs:54:5

---- test_expand_no_default_features stdout ----
Running: "/build/source/target/debug/cbindgen" "--lang" "c" "--style" "type" "-o" "/build/source/tests/expectations/expand_no_default_features.c" "/build/source/tests/rust/expand_no_default_features"
thread 'test_expand_no_default_features' panicked at 'cbindgen failed: "/build/source/tests/expectations/expand_no_default_features.c"', tests/tests.rs:54:5


failures:
    test_expand
    test_expand_default_features
    test_expand_features
    test_expand_no_default_features

test result: FAILED. 66 passed; 4 failed; 0 ignored; 0 measured; 0 filtered out

error: test failed, to rerun pass '--test tests'

[linkmauve]

Rust 1.32 is ancient by now, this issue can probably be closed.