Rust panicked when compiling on Raspbian (Raspberry pi 3B)

[lilymonad]

When trying to compile a web server (with actix-web framework) in my raspberry pi 3b, the compiler panicked. The buf only happens with nightly toolchain, stable works.

Code

use actix_web::{get, web, App, HttpServer, Responder};
use std::env;

const DEFAULT_BIND_ADDRESS : & 'static str = "127.0.0.1:8080";


#[get("/{name}")]
async fn hello(name: web::Path<String>) -> String {
    format!("Hello {}!", name)
}


#[actix_web::main]
async fn main() -> std::io::Result<()> {
    HttpServer::new(|| App::new().service(hello))
        .bind(env::var("SERVER_BIND_ADDRESS").unwrap_or(DEFAULT_BIND_ADDRESS.to_string()))?
        .run()
        .await
}

Meta

rustc --version --verbose:

rustc 1.47.0 (18bf6b4f0 2020-10-07)
binary: rustc
commit-hash: 18bf6b4f01a6feaf7259ba7cdae58031af1b7b39
commit-date: 2020-10-07
host: armv7-unknown-linux-gnueabihf
release: 1.47.0
LLVM version: 11.0

Error output

error: internal compiler error: compiler/rustc_mir_build/src/thir/pattern/_match.rs:934:18: trying to compare incompatible constructors Single and Str(Const { ty: &str, val: Value(Slice { data: Allocation { bytes: [105, 115, 115, 117, 101], relocations: Relocations(SortedMap { data: [] }), init_mask: InitMask { blocks: [31], len: Size { raw: 5 } }, size: Size { raw: 5 }, align: Align { pow2: 0 }, mutability: Not, extra: () }, start: 0, end: 5 }) })

// notes about bug report + backtrace ...
error: aborting due to previous error

error: could not compile `trust-dns-proto`

To learn more, run the command again with --verbose.
warning: build failed, waiting for other jobs to finish...
error: build failed

Backtrace

stack backtrace:
   0: std::panicking::begin_panic
   1: rustc_errors::HandlerInner::bug
   2: rustc_errors::Handler::bug
   3: rustc_middle::util::bug::opt_span_bug_fmt::{{closure}}
   4: rustc_middle::ty::context::tls::with_opt::{{closure}}
   5: rustc_middle::ty::context::tls::with_opt
   6: rustc_middle::util::bug::opt_span_bug_fmt
   7: rustc_middle::util::bug::bug_fmt
   8: rustc_mir_build::thir::pattern::_match::Matrix::specialize_constructor
   9: <core::iter::adapters::Map<I,F> as core::iter::traits::iterator::Iterator>::try_fold
  10: rustc_mir_build::thir::pattern::_match::is_useful
  11: <rustc_mir_build::thir::pattern::check_match::MatchVisitor as rustc_hir::intravisit::Visitor>::visit_expr
  12: rustc_hir::intravisit::walk_expr
  13: <rustc_mir_build::thir::pattern::check_match::MatchVisitor as rustc_hir::intravisit::Visitor>::visit_expr
  14: rustc_mir_build::thir::pattern::check_match::check_match
  15: rustc_middle::ty::query::<impl rustc_query_system::query::config::QueryAccessors<rustc_middle::ty::context::TyCtxt> for rustc_middle::ty::query::queries::check_match>::compute
  16: rustc_query_system::dep_graph::graph::DepGraph<K>::with_task_impl
  17: rustc_data_structures::stack::ensure_sufficient_stack
  18: rustc_query_system::query::plumbing::get_query_impl
  19: rustc_query_system::query::plumbing::ensure_query_impl
  20: <std::panic::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once
  21: rustc_interface::passes::analysis
  22: rustc_middle::ty::query::<impl rustc_query_system::query::config::QueryAccessors<rustc_middle::ty::context::TyCtxt> for rustc_middle::ty::query::queries::analysis>::compute
  23: rustc_query_system::dep_graph::graph::DepGraph<K>::with_task_impl
  24: rustc_middle::ty::query::plumbing::<impl rustc_query_system::query::QueryContext for rustc_middle::ty::context::TyCtxt>::start_query::{{closure}}::{{closure}}::{{closure}}
  25: rustc_query_system::query::plumbing::get_query_impl
  26: rustc_interface::passes::QueryContext::enter
  27: rustc_interface::queries::<impl rustc_interface::interface::Compiler>::enter
  28: rustc_span::with_source_map
  29: scoped_tls::ScopedKey<T>::set

[jonas-schievink]

Duplicate of #78549