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   Compiling serde v1.0.127
   Compiling ipnet v2.3.1 (/home/ubuntu/ipnet)
thread 'rustc' panicked at 'assertion failed: w < 128', compiler/rustc_codegen_llvm/src/gotoc/cbmc/goto_program/typ.rs:748:9
stack backtrace:
   0: rust_begin_unwind
             at /home/ubuntu/rmc/library/std/src/panicking.rs:517:5
   1: core::panicking::panic_fmt
             at /home/ubuntu/rmc/library/core/src/panicking.rs:93:14
   2: core::panicking::panic
             at /home/ubuntu/rmc/library/core/src/panicking.rs:50:5
   3: rustc_codegen_llvm::gotoc::cbmc::goto_program::typ::Type::max_int
             at /home/ubuntu/rmc/compiler/rustc_codegen_llvm/src/gotoc/cbmc/goto_program/typ.rs:748:9
   4: rustc_codegen_llvm::gotoc::cbmc::goto_program::typ::Type::max_int_expr
             at /home/ubuntu/rmc/compiler/rustc_codegen_llvm/src/gotoc/cbmc/goto_program/typ.rs:755:28
   5: rustc_codegen_llvm::gotoc::cbmc::goto_program::expr::Expr::saturating_add
             at /home/ubuntu/rmc/compiler/rustc_codegen_llvm/src/gotoc/cbmc/goto_program/expr.rs:1231:79
   6: rustc_codegen_llvm::gotoc::intrinsic::<impl rustc_codegen_llvm::gotoc::metadata::GotocCtx>::codegen_intrinsic
             at /home/ubuntu/rmc/compiler/rustc_codegen_llvm/src/gotoc/intrinsic.rs:373:33
   7: <rustc_codegen_llvm::gotoc::hooks::Intrinsic as rustc_codegen_llvm::gotoc::hooks::GotocHook>::handle
             at /home/ubuntu/rmc/compiler/rustc_codegen_llvm/src/gotoc/hooks.rs:274:21
   8: rustc_codegen_llvm::gotoc::statement::<impl rustc_codegen_llvm::gotoc::metadata::GotocCtx>::codegen_funcall
             at /home/ubuntu/rmc/compiler/rustc_codegen_llvm/src/gotoc/statement.rs:281:28
   9: rustc_codegen_llvm::gotoc::statement::<impl rustc_codegen_llvm::gotoc::metadata::GotocCtx>::codegen_terminator
             at /home/ubuntu/rmc/compiler/rustc_codegen_llvm/src/gotoc/statement.rs:63:17
  10: rustc_codegen_llvm::gotoc::<impl rustc_codegen_llvm::gotoc::metadata::GotocCtx>::codegen_block
             at /home/ubuntu/rmc/compiler/rustc_codegen_llvm/src/gotoc/mod.rs:133:28
  11: rustc_codegen_llvm::gotoc::<impl rustc_codegen_llvm::gotoc::metadata::GotocCtx>::codegen_function::{{closure}}
             at /home/ubuntu/rmc/compiler/rustc_codegen_llvm/src/gotoc/mod.rs:304:71
  12: core::iter::traits::iterator::Iterator::for_each::call::{{closure}}
             at /home/ubuntu/rmc/library/core/src/iter/traits/iterator.rs:730:29
  13: core::iter::adapters::map::map_fold::{{closure}}
             at /home/ubuntu/rmc/library/core/src/iter/adapters/map.rs:84:21
  14: <core::iter::adapters::enumerate::Enumerate<I> as core::iter::traits::iterator::Iterator>::fold::enumerate::{{closure}}
             at /home/ubuntu/rmc/library/core/src/iter/adapters/enumerate.rs:106:27
  15: core::iter::traits::iterator::Iterator::fold
             at /home/ubuntu/rmc/library/core/src/iter/traits/iterator.rs:2170:21
  16: <core::iter::adapters::enumerate::Enumerate<I> as core::iter::traits::iterator::Iterator>::fold
             at /home/ubuntu/rmc/library/core/src/iter/adapters/enumerate.rs:112:9
  17: <core::iter::adapters::map::Map<I,F> as core::iter::traits::iterator::Iterator>::fold
             at /home/ubuntu/rmc/library/core/src/iter/adapters/map.rs:124:9
  18: core::iter::traits::iterator::Iterator::for_each
             at /home/ubuntu/rmc/library/core/src/iter/traits/iterator.rs:733:9
  19: rustc_codegen_llvm::gotoc::<impl rustc_codegen_llvm::gotoc::metadata::GotocCtx>::codegen_function
             at /home/ubuntu/rmc/compiler/rustc_codegen_llvm/src/gotoc/mod.rs:304:13
  20: <rustc_codegen_llvm::gotoc::GotocCodegenBackend as rustc_codegen_ssa::traits::backend::CodegenBackend>::codegen_crate::{{closure}}
             at /home/ubuntu/rmc/compiler/rustc_codegen_llvm/src/gotoc/mod.rs:488:35
  21: rustc_codegen_llvm::gotoc::<impl rustc_codegen_llvm::gotoc::metadata::GotocCtx>::call_with_panic_debug_info::{{closure}}
             at /home/ubuntu/rmc/compiler/rustc_codegen_llvm/src/gotoc/mod.rs:109:13
  22: std::thread::local::LocalKey<T>::try_with
             at /home/ubuntu/rmc/library/std/src/thread/local.rs:399:16
  23: std::thread::local::LocalKey<T>::with
             at /home/ubuntu/rmc/library/std/src/thread/local.rs:375:9
  24: rustc_codegen_llvm::gotoc::<impl rustc_codegen_llvm::gotoc::metadata::GotocCtx>::call_with_panic_debug_info
             at /home/ubuntu/rmc/compiler/rustc_codegen_llvm/src/gotoc/mod.rs:107:9
  25: <rustc_codegen_llvm::gotoc::GotocCodegenBackend as rustc_codegen_ssa::traits::backend::CodegenBackend>::codegen_crate
             at /home/ubuntu/rmc/compiler/rustc_codegen_llvm/src/gotoc/mod.rs:487:25
  26: rustc_interface::passes::start_codegen::{{closure}}
             at /home/ubuntu/rmc/compiler/rustc_interface/src/passes.rs:1056:9
  27: rustc_data_structures::profiling::VerboseTimingGuard::run
             at /home/ubuntu/rmc/compiler/rustc_data_structures/src/profiling.rs:611:9
  28: rustc_session::utils::<impl rustc_session::session::Session>::time
             at /home/ubuntu/rmc/compiler/rustc_session/src/utils.rs:16:9
  29: rustc_interface::passes::start_codegen
             at /home/ubuntu/rmc/compiler/rustc_interface/src/passes.rs:1055:19
  30: rustc_interface::queries::Queries::ongoing_codegen::{{closure}}::{{closure}}
             at /home/ubuntu/rmc/compiler/rustc_interface/src/queries.rs:254:20
  31: rustc_interface::passes::QueryContext::enter::{{closure}}
             at /home/ubuntu/rmc/compiler/rustc_interface/src/passes.rs:780:42
  32: rustc_middle::ty::context::tls::enter_context::{{closure}}
             at /home/ubuntu/rmc/compiler/rustc_middle/src/ty/context.rs:1784:50
  33: rustc_middle::ty::context::tls::set_tlv
             at /home/ubuntu/rmc/compiler/rustc_middle/src/ty/context.rs:1768:9
  34: rustc_middle::ty::context::tls::enter_context
             at /home/ubuntu/rmc/compiler/rustc_middle/src/ty/context.rs:1784:9
  35: rustc_interface::passes::QueryContext::enter
             at /home/ubuntu/rmc/compiler/rustc_interface/src/passes.rs:780:9
  36: rustc_interface::queries::Queries::ongoing_codegen::{{closure}}
             at /home/ubuntu/rmc/compiler/rustc_interface/src/queries.rs:245:13
  37: rustc_interface::queries::Query<T>::compute
             at /home/ubuntu/rmc/compiler/rustc_interface/src/queries.rs:38:28
  38: rustc_interface::queries::Queries::ongoing_codegen
             at /home/ubuntu/rmc/compiler/rustc_interface/src/queries.rs:243:9
  39: rustc_driver::run_compiler::{{closure}}::{{closure}}
             at /home/ubuntu/rmc/compiler/rustc_driver/src/lib.rs:407:13
  40: rustc_interface::queries::<impl rustc_interface::interface::Compiler>::enter
             at /home/ubuntu/rmc/compiler/rustc_interface/src/queries.rs:394:19
  41: rustc_driver::run_compiler::{{closure}}
             at /home/ubuntu/rmc/compiler/rustc_driver/src/lib.rs:312:22
  42: rustc_interface::interface::create_compiler_and_run::{{closure}}
             at /home/ubuntu/rmc/compiler/rustc_interface/src/interface.rs:209:13
  43: rustc_span::with_source_map
             at /home/ubuntu/rmc/compiler/rustc_span/src/lib.rs:911:5
  44: rustc_interface::interface::create_compiler_and_run
             at /home/ubuntu/rmc/compiler/rustc_interface/src/interface.rs:203:5
  45: rustc_interface::interface::run_compiler::{{closure}}
             at /home/ubuntu/rmc/compiler/rustc_interface/src/interface.rs:225:12
  46: rustc_interface::util::setup_callbacks_and_run_in_thread_pool_with_globals::{{closure}}::{{closure}}
             at /home/ubuntu/rmc/compiler/rustc_interface/src/util.rs:157:13
  47: scoped_tls::ScopedKey<T>::set
             at /home/ubuntu/.cargo/registry/src/github.com-1ecc6299db9ec823/scoped-tls-1.0.0/src/lib.rs:137:9
  48: rustc_span::create_session_globals_then
             at /home/ubuntu/rmc/compiler/rustc_span/src/lib.rs:105:5
  49: rustc_interface::util::setup_callbacks_and_run_in_thread_pool_with_globals::{{closure}}
             at /home/ubuntu/rmc/compiler/rustc_interface/src/util.rs:155:9
  50: rustc_interface::util::scoped_thread::{{closure}}
             at /home/ubuntu/rmc/compiler/rustc_interface/src/util.rs:130:24
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/issues/new?labels=C-bug%2C+I-ICE%2C+T-compiler&template=ice.md

note: rustc 1.56.0-dev running on x86_64-unknown-linux-gnu

note: compiler flags: -Z trim-diagnostic-paths=no -Z codegen-backend=gotoc -C embed-bitcode=no -C debuginfo=2 -C incremental --crate-type lib

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

query stack during panic:
end of query stack

[RMC] current codegen item: codegen_function: core::num::<impl u128>::saturating_add

RMC unexpectedly panicked during code generation.

If you are seeing this message, please file an issue here instead of on the Rust compiler: https://github.com/model-checking/rmc/issues/new?labels=bug&template=bug_report.md
error: could not compile `ipnet`