error[E0433]: failed to resolve: unresolved import for libc crate #72263

error[E0433]: failed to resolve: unresolved import

thread 'rustc' panicked at 'aborting due to `-Z treat-err-as-bug=1`', src/librustc_errors/lib.rs:933:13
stack backtrace:
   0: backtrace::backtrace::libunwind::trace
             at /cargo/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.46/src/backtrace/libunwind.rs:86
   1: backtrace::backtrace::trace_unsynchronized
             at /cargo/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.46/src/backtrace/mod.rs:66
   2: std::sys_common::backtrace::_print_fmt
             at src/libstd/sys_common/backtrace.rs:78
   3: <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt
             at src/libstd/sys_common/backtrace.rs:59
   4: core::fmt::write
             at src/libcore/fmt/mod.rs:1069
   5: std::io::Write::write_fmt
             at src/libstd/io/mod.rs:1537
   6: std::sys_common::backtrace::_print
             at src/libstd/sys_common/backtrace.rs:62
   7: std::sys_common::backtrace::print
             at src/libstd/sys_common/backtrace.rs:49
   8: std::panicking::default_hook::{{closure}}
             at src/libstd/panicking.rs:198
   9: std::panicking::default_hook
             at src/libstd/panicking.rs:218
  10: rustc_driver::report_ice
  11: std::panicking::rust_panic_with_hook
             at src/libstd/panicking.rs:481
  12: std::panicking::begin_panic
  13: rustc_errors::HandlerInner::emit_diagnostic
  14: rustc_errors::diagnostic_builder::DiagnosticBuilder::emit
  15: <rustc_resolve::Resolver as rustc_ast_lowering::Resolver>::resolve_str_path
  16: rustc_ast_lowering::LoweringContext::std_path
  17: rustc_ast_lowering::expr::<impl rustc_ast_lowering::LoweringContext>::lower_expr_range
  18: rustc_data_structures::stack::ensure_sufficient_stack
  19: rustc_data_structures::stack::ensure_sufficient_stack
  20: <smallvec::SmallVec<A> as core::iter::traits::collect::Extend<<A as smallvec::Array>::Item>>::extend
  21: rustc_ast_lowering::expr::<impl rustc_ast_lowering::LoweringContext>::lower_exprs
  22: rustc_data_structures::stack::ensure_sufficient_stack
  23: rustc_ast_lowering::expr::<impl rustc_ast_lowering::LoweringContext>::lower_expr_for
  24: rustc_data_structures::stack::ensure_sufficient_stack
  25: rustc_ast_lowering::LoweringContext::lower_stmt
  26: rustc_ast_lowering::LoweringContext::lower_block_noalloc
  27: rustc_ast_lowering::LoweringContext::lower_block_expr
  28: rustc_ast_lowering::item::<impl rustc_ast_lowering::LoweringContext>::lower_fn_body_block
  29: rustc_ast_lowering::item::<impl rustc_ast_lowering::LoweringContext>::lower_item
  30: rustc_ast_lowering::LoweringContext::with_hir_id_owner
  31: <rustc_ast_lowering::item::ItemLowerer as rustc_ast::visit::Visitor>::visit_mod
  32: rustc_ast::visit::walk_item
  33: rustc_ast_lowering::item::<impl rustc_ast_lowering::LoweringContext>::with_parent_item_lifetime_defs
  34: <rustc_ast_lowering::item::ItemLowerer as rustc_ast::visit::Visitor>::visit_mod
  35: rustc_ast::visit::walk_item
  36: rustc_ast_lowering::item::<impl rustc_ast_lowering::LoweringContext>::with_parent_item_lifetime_defs
  37: <rustc_ast_lowering::item::ItemLowerer as rustc_ast::visit::Visitor>::visit_mod
  38: rustc_ast::visit::walk_item
  39: rustc_ast_lowering::item::<impl rustc_ast_lowering::LoweringContext>::with_parent_item_lifetime_defs
  40: <rustc_ast_lowering::item::ItemLowerer as rustc_ast::visit::Visitor>::visit_mod
  41: rustc_ast::visit::walk_crate
  42: rustc_ast_lowering::lower_crate
  43: rustc_interface::passes::BoxedResolver::access::{{closure}}
  44: rustc_interface::passes::configure_and_expand::{{closure}}
  45: rustc_interface::passes::BoxedResolver::access
  46: rustc_interface::queries::Queries::lower_to_hir
  47: rustc_interface::queries::Queries::global_ctxt
  48: rustc_interface::interface::run_compiler_in_existing_thread_pool
  49: scoped_tls::ScopedKey<T>::set
  50: rustc_ast::attr::with_globals
note: Some details are omitted, run with `RUST_BACKTRACE=full` for a verbose backtrace.

error: internal compiler error: unexpected panic

note: the compiler unexpectedly panicked. this is a bug.

note: we would appreciate a bug report: https://github.com/rust-lang/rust/blob/master/CONTRIBUTING.md#bug-reports

note: rustc 1.45.0-nightly (ed084b0b8 2020-05-15) running on x86_64-unknown-linux-gnu

note: compiler flags: -Z panic-abort-tests -Z codegen-backend=/home/bjorn/Documenten/cg_clif/target/release/librustc_codegen_cranelift.so -Z force-unstable-if-unmarked -Z treat-err-as-bug=1 -C embed-bitcode=no -C debuginfo=2 -C panic=abort -C debuginfo=2 --crate-type lib

note: some of the compiler flags provided by cargo are hidden

query stack during panic:
end of query stack
error: could not compile `libc`.