[INFO] cloning repository ruggeri/rust_learning [INFO] running `"git" "clone" "--bare" "git://github.com/ruggeri/rust_learning.git" "work/cache/sources/gh/ruggeri/rust_learning"` [INFO] [stderr] Cloning into bare repository 'work/cache/sources/gh/ruggeri/rust_learning'... [INFO] running `"git" "clone" "work/cache/sources/gh/ruggeri/rust_learning" "work/ex/pr-61874/sources/master#9f06855064ed06a50c496577b21ca50f92a2e67d/gh/ruggeri/rust_learning"` [INFO] [stderr] Cloning into 'work/ex/pr-61874/sources/master#9f06855064ed06a50c496577b21ca50f92a2e67d/gh/ruggeri/rust_learning'... [INFO] [stderr] done. [INFO] running `"git" "clone" "work/cache/sources/gh/ruggeri/rust_learning" "work/ex/pr-61874/sources/try#d3301713b54af69ca9de941a8c6b0d8287dbd6df/gh/ruggeri/rust_learning"` [INFO] [stderr] Cloning into 'work/ex/pr-61874/sources/try#d3301713b54af69ca9de941a8c6b0d8287dbd6df/gh/ruggeri/rust_learning'... [INFO] [stderr] done. [INFO] running `"git" "rev-parse" "HEAD"` [INFO] [stdout] 6564c9e695a39cf690d74e0eb370d542f146007c [INFO] sha for GitHub repo ruggeri/rust_learning: 6564c9e695a39cf690d74e0eb370d542f146007c [INFO] validating manifest of ruggeri/rust_learning on toolchain master#9f06855064ed06a50c496577b21ca50f92a2e67d [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+9f06855064ed06a50c496577b21ca50f92a2e67d-alt" "read-manifest" "--manifest-path" "Cargo.toml"` [INFO] validating manifest of ruggeri/rust_learning on toolchain try#d3301713b54af69ca9de941a8c6b0d8287dbd6df [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+d3301713b54af69ca9de941a8c6b0d8287dbd6df-alt" "read-manifest" "--manifest-path" "Cargo.toml"` [INFO] started frobbing ruggeri/rust_learning [INFO] finished frobbing ruggeri/rust_learning [INFO] frobbed toml for ruggeri/rust_learning written to work/ex/pr-61874/sources/master#9f06855064ed06a50c496577b21ca50f92a2e67d/gh/ruggeri/rust_learning/Cargo.toml [INFO] started frobbing ruggeri/rust_learning [INFO] finished frobbing ruggeri/rust_learning [INFO] frobbed toml for ruggeri/rust_learning written to work/ex/pr-61874/sources/try#d3301713b54af69ca9de941a8c6b0d8287dbd6df/gh/ruggeri/rust_learning/Cargo.toml [INFO] crate ruggeri/rust_learning already has a lockfile, it will not be regenerated [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+9f06855064ed06a50c496577b21ca50f92a2e67d-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+d3301713b54af69ca9de941a8c6b0d8287dbd6df-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] checking ruggeri/rust_learning against master#9f06855064ed06a50c496577b21ca50f92a2e67d for pr-61874 [INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-61874/worker-3/master#9f06855064ed06a50c496577b21ca50f92a2e67d:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-61874/sources/master#9f06855064ed06a50c496577b21ca50f92a2e67d/gh/ruggeri/rust_learning:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+9f06855064ed06a50c496577b21ca50f92a2e67d-alt" "check" "--frozen" "--all" "--all-targets"` [INFO] [stdout] e662b19c877d2d63ff4aaded73512c4e06cbb5d3bc79f8a66e203b502be40c6d [INFO] running `"docker" "start" "-a" "e662b19c877d2d63ff4aaded73512c4e06cbb5d3bc79f8a66e203b502be40c6d"` [INFO] [stderr] Checking rust_learning v0.1.0 (/opt/crater/workdir) [INFO] [stderr] thread 'rustc' panicked at 'assertion failed: self.bccx.region_scope_tree.scopes_intersect(old_loan.kill_scope, [INFO] [stderr] new_loan.kill_scope)', src/librustc_borrowck/borrowck/check_loans.rs:493:9 [INFO] [stderr] stack backtrace: [INFO] [stderr] thread 'rustc' panicked at 'assertion failed: self.bccx.region_scope_tree.scopes_intersect(old_loan.kill_scope, [INFO] [stderr] new_loan.kill_scope)', src/librustc_borrowck/borrowck/check_loans.rs:493:9 [INFO] [stderr] stack backtrace: [INFO] [stderr] 0: 0x7fd9c90ea0cb - backtrace::backtrace::libunwind::trace::hc6a4966d389b62be [INFO] [stderr] at /cargo/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.29/src/backtrace/libunwind.rs:88 [INFO] [stderr] 0: 0x7fbf420bf0cb - backtrace::backtrace::libunwind::trace::hc6a4966d389b62be [INFO] [stderr] at /cargo/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.29/src/backtrace/libunwind.rs:88 [INFO] [stderr] 1: 0x7fbf420bf0cb - backtrace::backtrace::trace_unsynchronized::h234cd6c2c95fa587 [INFO] [stderr] at /cargo/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.29/src/backtrace/mod.rs:66 [INFO] [stderr] 2: 0x7fbf420bf0cb - std::sys_common::backtrace::_print::h2896bece16680b31 [INFO] [stderr] at src/libstd/sys_common/backtrace.rs:47 [INFO] [stderr] 3: 0x7fbf420bf0cb - std::sys_common::backtrace::print::h5f4d4b954705d426 [INFO] [stderr] at src/libstd/sys_common/backtrace.rs:36 [INFO] [stderr] 4: 0x7fbf420bf0cb - std::panicking::default_hook::{{closure}}::h3d52949e2d73c1aa [INFO] [stderr] at src/libstd/panicking.rs:198 [INFO] [stderr] 5: 0x7fbf420bedcc - std::panicking::default_hook::h4b88c02cc00064f5 [INFO] [stderr] at src/libstd/panicking.rs:212 [INFO] [stderr] 6: 0x7fbf3f66de21 - rustc::util::common::panic_hook::h511b57657ac259d9 [INFO] [stderr] 7: 0x7fbf420bf929 - std::panicking::rust_panic_with_hook::he5596ad1952b7279 [INFO] [stderr] at src/libstd/panicking.rs:479 [INFO] [stderr] 8: 0x7fbf4105a5c5 - std::panicking::begin_panic::hac4f1b909ca16f2f [INFO] [stderr] 9: 0x7fbf4102967d - rustc_borrowck::borrowck::check_loans::CheckLoanCtxt::report_error_if_loans_conflict::hd1142b8ab519ca33 [INFO] [stderr] 10: 0x7fbf4100915e - rustc_borrowck::dataflow::DataFlowContext::each_bit_on_entry::h0f094319de1dd5a8 [INFO] [stderr] 11: 0x7fbf41028a50 - ::borrow::h6ece05cf9982fc6d [INFO] [stderr] 12: 0x7fbf3f6443a0 - rustc::middle::expr_use_visitor::ExprUseVisitor::walk_expr::hc447ec80956fb59b [INFO] [stderr] 13: 0x7fbf3f643e5d - rustc::middle::expr_use_visitor::ExprUseVisitor::consume_expr::he8e96a85a8b6dfe6 [INFO] [stderr] 14: 0x7fbf3f644a86 - rustc::middle::expr_use_visitor::ExprUseVisitor::walk_expr::hc447ec80956fb59b [INFO] [stderr] 15: 0x7fbf3f643e5d - rustc::middle::expr_use_visitor::ExprUseVisitor::consume_expr::he8e96a85a8b6dfe6 [INFO] [stderr] 1: 0x7fd9c90ea0cb - backtrace::backtrace::trace_unsynchronized::h234cd6c2c95fa587 [INFO] [stderr] at /cargo/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.29/src/backtrace/mod.rs:66 [INFO] [stderr] 2: 0x7fd9c90ea0cb - std::sys_common::backtrace::_print::h2896bece16680b31 [INFO] [stderr] at src/libstd/sys_common/backtrace.rs:47 [INFO] [stderr] 3: 0x7fd9c90ea0cb - std::sys_common::backtrace::print::h5f4d4b954705d426 [INFO] [stderr] at src/libstd/sys_common/backtrace.rs:36 [INFO] [stderr] 4: 0x7fd9c90ea0cb - std::panicking::default_hook::{{closure}}::h3d52949e2d73c1aa [INFO] [stderr] at src/libstd/panicking.rs:198 [INFO] [stderr] 5: 0x7fd9c90e9dcc - std::panicking::default_hook::h4b88c02cc00064f5 [INFO] [stderr] at src/libstd/panicking.rs:212 [INFO] [stderr] 6: 0x7fd9c6698e21 - rustc::util::common::panic_hook::h511b57657ac259d9 [INFO] [stderr] 7: 0x7fd9c90ea929 - std::panicking::rust_panic_with_hook::he5596ad1952b7279 [INFO] [stderr] at src/libstd/panicking.rs:479 [INFO] [stderr] 8: 0x7fd9c80855c5 - std::panicking::begin_panic::hac4f1b909ca16f2f [INFO] [stderr] 9: 0x7fd9c805467d - rustc_borrowck::borrowck::check_loans::CheckLoanCtxt::report_error_if_loans_conflict::hd1142b8ab519ca33 [INFO] [stderr] 10: 0x7fd9c803415e - rustc_borrowck::dataflow::DataFlowContext::each_bit_on_entry::h0f094319de1dd5a8 [INFO] [stderr] 11: 0x7fd9c8053a50 - ::borrow::h6ece05cf9982fc6d [INFO] [stderr] 12: 0x7fd9c666f3a0 - rustc::middle::expr_use_visitor::ExprUseVisitor::walk_expr::hc447ec80956fb59b [INFO] [stderr] 13: 0x7fd9c666ee5d - rustc::middle::expr_use_visitor::ExprUseVisitor::consume_expr::he8e96a85a8b6dfe6 [INFO] [stderr] 14: 0x7fd9c666fa86 - rustc::middle::expr_use_visitor::ExprUseVisitor::walk_expr::hc447ec80956fb59b [INFO] [stderr] 15: 0x7fd9c666ee5d - rustc::middle::expr_use_visitor::ExprUseVisitor::consume_expr::he8e96a85a8b6dfe6 [INFO] [stderr] 16: 0x7fd9c66705eb - rustc::middle::expr_use_visitor::ExprUseVisitor::walk_expr::hc447ec80956fb59b [INFO] [stderr] 17: 0x7fd9c666ee5d - rustc::middle::expr_use_visitor::ExprUseVisitor::consume_expr::he8e96a85a8b6dfe6 [INFO] [stderr] 18: 0x7fd9c66708f6 - rustc::middle::expr_use_visitor::ExprUseVisitor::walk_expr::hc447ec80956fb59b [INFO] [stderr] 19: 0x7fd9c666ee5d - rustc::middle::expr_use_visitor::ExprUseVisitor::consume_expr::he8e96a85a8b6dfe6 [INFO] [stderr] 20: 0x7fd9c8054362 - rustc_borrowck::borrowck::check_loans::check_loans::haa55bc651ba941b9 [INFO] [stderr] 21: 0x7fd9c805b932 - rustc_borrowck::borrowck::borrowck::hf463d38834918e7d [INFO] [stderr] 22: 0x7fd9c7932ee0 - rustc::ty::query::__query_compute::borrowck::hbb433fa9b8b51d84 [INFO] [stderr] 23: 0x7fd9c7c4e53d - rustc::ty::query::::compute::h56420b2ef0adff94 [INFO] [stderr] 24: 0x7fd9c79cbe57 - rustc::dep_graph::graph::DepGraph::with_task_impl::he568c86cff9e4c23 [INFO] [stderr] 25: 0x7fd9c7ccdfd5 - rustc::ty::query::plumbing::::get_query::he9e42de6fce03ce6 [INFO] [stderr] 26: 0x7fd9c795642d - rustc_mir::borrow_check::do_mir_borrowck::hafd4e382737bba18 [INFO] [stderr] 27: 0x7fd9c7cd9896 - rustc::ty::context::GlobalCtxt::enter_local::h86b61a7f9a2cdec5 [INFO] [stderr] 28: 0x7fd9c795213a - rustc_mir::borrow_check::mir_borrowck::hfdab2fb5b91cd0c3 [INFO] [stderr] 29: 0x7fd9c83e39b7 - rustc::ty::query::__query_compute::mir_borrowck::hac8a7278a8fcde2e [INFO] [stderr] 30: 0x7fd9c83a2865 - rustc::ty::query::::compute::h5bae13be0e1ad72e [INFO] [stderr] 31: 0x7fd9c83d12dc - rustc::dep_graph::graph::DepGraph::with_task_impl::h0d3b0787dbc0f624 [INFO] [stderr] 32: 0x7fd9c83b1540 - rustc::ty::query::plumbing::::get_query::h381835dc7d227998 [INFO] [stderr] 16: 0x7fbf3f6455eb - rustc::middle::expr_use_visitor::ExprUseVisitor::walk_expr::hc447ec80956fb59b [INFO] [stderr] 33: 0x7fd9c83a26e3 - rustc::ty::::par_body_owners::h6ad649e7ad2ea67c [INFO] [stderr] 17: 0x7fbf3f643e5d - rustc::middle::expr_use_visitor::ExprUseVisitor::consume_expr::he8e96a85a8b6dfe6 [INFO] [stderr] 34: 0x7fd9c8376c58 - rustc::util::common::time::hcbda3c0fb80839b6 [INFO] [stderr] 35: 0x7fd9c83207d2 - rustc_interface::passes::analysis::h3439991ed9f76ee2 [INFO] [stderr] 18: 0x7fbf3f6458f6 - rustc::middle::expr_use_visitor::ExprUseVisitor::walk_expr::hc447ec80956fb59b [INFO] [stderr] 36: 0x7fd9c9448566 - rustc::ty::query::__query_compute::analysis::h0cee2a182985cfe9 [INFO] [stderr] 19: 0x7fbf3f643e5d - rustc::middle::expr_use_visitor::ExprUseVisitor::consume_expr::he8e96a85a8b6dfe6 [INFO] [stderr] 37: 0x7fd9c93b4666 - rustc::dep_graph::graph::DepGraph::with_task_impl::h40fab7ace4d1c6d5 [INFO] [stderr] 20: 0x7fbf41029362 - rustc_borrowck::borrowck::check_loans::check_loans::haa55bc651ba941b9 [INFO] [stderr] 38: 0x7fd9c93af40c - rustc::ty::query::plumbing::::get_query::hc0e97aef2787594e [INFO] [stderr] 21: 0x7fbf41030932 - rustc_borrowck::borrowck::borrowck::hf463d38834918e7d [INFO] [stderr] 39: 0x7fd9c93be126 - rustc::ty::context::tls::enter_global::he831a4a338ae6482 [INFO] [stderr] 22: 0x7fbf40907ee0 - rustc::ty::query::__query_compute::borrowck::hbb433fa9b8b51d84 [INFO] [stderr] 40: 0x7fd9c93dcbc7 - rustc_interface::passes::BoxedGlobalCtxt::access::{{closure}}::h9c08a044cad67635 [INFO] [stderr] 41: 0x7fd9c837e085 - rustc_interface::passes::create_global_ctxt::{{closure}}::hf01b139742b994c2 [INFO] [stderr] 42: 0x7fd9c93de7da - rustc_interface::interface::run_compiler_in_existing_thread_pool::hd14bec79808b9b2e [INFO] [stderr] 23: 0x7fbf40c2353d - rustc::ty::query::::compute::h56420b2ef0adff94 [INFO] [stderr] 43: 0x7fd9c944e716 - std::thread::local::LocalKey::with::h506ab677f3123a6b [INFO] [stderr] 44: 0x7fd9c93e83d5 - scoped_tls::ScopedKey::set::h089f9363afa7ae5b [INFO] [stderr] 24: 0x7fbf409a0e57 - rustc::dep_graph::graph::DepGraph::with_task_impl::he568c86cff9e4c23 [INFO] [stderr] 45: 0x7fd9c941a974 - syntax::with_globals::h577c1c6ead223a50 [INFO] [stderr] 46: 0x7fd9c943905d - std::sys_common::backtrace::__rust_begin_short_backtrace::he1b800d8c3ceec6d [INFO] [stderr] 25: 0x7fbf40ca2fd5 - rustc::ty::query::plumbing::::get_query::he9e42de6fce03ce6 [INFO] [stderr] 26: 0x7fbf4092b42d - rustc_mir::borrow_check::do_mir_borrowck::hafd4e382737bba18 [INFO] [stderr] 27: 0x7fbf40cae896 - rustc::ty::context::GlobalCtxt::enter_local::h86b61a7f9a2cdec5 [INFO] [stderr] 47: 0x7fd9c90fb81a - __rust_maybe_catch_panic [INFO] [stderr] 28: 0x7fbf4092713a - rustc_mir::borrow_check::mir_borrowck::hfdab2fb5b91cd0c3 [INFO] [stderr] 29: 0x7fbf413b89b7 - rustc::ty::query::__query_compute::mir_borrowck::hac8a7278a8fcde2e [INFO] [stderr] at src/libpanic_unwind/lib.rs:82 [INFO] [stderr] 48: 0x7fd9c93c5fa9 - core::ops::function::FnOnce::call_once{{vtable.shim}}::h6db0f4bcdb624697 [INFO] [stderr] 30: 0x7fbf41377865 - rustc::ty::query::::compute::h5bae13be0e1ad72e [INFO] [stderr] 31: 0x7fbf413a62dc - rustc::dep_graph::graph::DepGraph::with_task_impl::h0d3b0787dbc0f624 [INFO] [stderr] 49: 0x7fd9c90cde2f - as core::ops::function::FnOnce>::call_once::h49f34bf8b3e873a3 [INFO] [stderr] 32: 0x7fbf41386540 - rustc::ty::query::plumbing::::get_query::h381835dc7d227998 [INFO] [stderr] at /rustc/9f06855064ed06a50c496577b21ca50f92a2e67d/src/liballoc/boxed.rs:746 [INFO] [stderr] 33: 0x7fbf413776e3 - rustc::ty::::par_body_owners::h6ad649e7ad2ea67c [INFO] [stderr] 34: 0x7fbf4134bc58 - rustc::util::common::time::hcbda3c0fb80839b6 [INFO] [stderr] 50: 0x7fd9c90fa4f0 - as core::ops::function::FnOnce>::call_once::hd7eca4fbeae63baa [INFO] [stderr] 35: 0x7fbf412f57d2 - rustc_interface::passes::analysis::h3439991ed9f76ee2 [INFO] [stderr] at /rustc/9f06855064ed06a50c496577b21ca50f92a2e67d/src/liballoc/boxed.rs:746 [INFO] [stderr] 36: 0x7fbf4241d566 - rustc::ty::query::__query_compute::analysis::h0cee2a182985cfe9 [INFO] [stderr] 37: 0x7fbf42389666 - rustc::dep_graph::graph::DepGraph::with_task_impl::h40fab7ace4d1c6d5 [INFO] [stderr] 51: 0x7fd9c90fa4f0 - std::sys_common::thread::start_thread::hf68c3b122bfe3a6a [INFO] [stderr] at src/libstd/sys_common/thread.rs:13 [INFO] [stderr] 38: 0x7fbf4238440c - rustc::ty::query::plumbing::::get_query::hc0e97aef2787594e [INFO] [stderr] 39: 0x7fbf42393126 - rustc::ty::context::tls::enter_global::he831a4a338ae6482 [INFO] [stderr] 52: 0x7fd9c90fa4f0 - std::sys::unix::thread::Thread::new::thread_start::h7db2e2b219b94091 [INFO] [stderr] at src/libstd/sys/unix/thread.rs:79 [INFO] [stderr] 40: 0x7fbf423b1bc7 - rustc_interface::passes::BoxedGlobalCtxt::access::{{closure}}::h9c08a044cad67635 [INFO] [stderr] 53: 0x7fd9c8e6c4a4 - start_thread [INFO] [stderr] 41: 0x7fbf41353085 - rustc_interface::passes::create_global_ctxt::{{closure}}::hf01b139742b994c2 [INFO] [stderr] 54: 0x7fd9c87a2d0f - __clone [INFO] [stderr] 42: 0x7fbf423b37da - rustc_interface::interface::run_compiler_in_existing_thread_pool::hd14bec79808b9b2e [INFO] [stderr] 43: 0x7fbf42423716 - std::thread::local::LocalKey::with::h506ab677f3123a6b [INFO] [stderr] 55: 0x0 - [INFO] [stderr] 44: 0x7fbf423bd3d5 - scoped_tls::ScopedKey::set::h089f9363afa7ae5b [INFO] [stderr] query stack during panic: [INFO] [stderr] 45: 0x7fbf423ef974 - syntax::with_globals::h577c1c6ead223a50 [INFO] [stderr] 46: 0x7fbf4240e05d - std::sys_common::backtrace::__rust_begin_short_backtrace::he1b800d8c3ceec6d [INFO] [stderr] #0 [borrowck] processing `bst::bst::BST::::find_mut` [INFO] [stderr] #1 [mir_borrowck] processing `bst::bst::BST::::find_mut` [INFO] [stderr] #2 [analysis] running analysis passes on this crate [INFO] [stderr] 47: 0x7fbf420d081a - __rust_maybe_catch_panic [INFO] [stderr] end of query stack [INFO] [stderr] at src/libpanic_unwind/lib.rs:82 [INFO] [stderr] 48: 0x7fbf4239afa9 - core::ops::function::FnOnce::call_once{{vtable.shim}}::h6db0f4bcdb624697 [INFO] [stderr] 49: 0x7fbf420a2e2f - as core::ops::function::FnOnce>::call_once::h49f34bf8b3e873a3 [INFO] [stderr] at /rustc/9f06855064ed06a50c496577b21ca50f92a2e67d/src/liballoc/boxed.rs:746 [INFO] [stderr] 50: 0x7fbf420cf4f0 - as core::ops::function::FnOnce>::call_once::hd7eca4fbeae63baa [INFO] [stderr] at /rustc/9f06855064ed06a50c496577b21ca50f92a2e67d/src/liballoc/boxed.rs:746 [INFO] [stderr] 51: 0x7fbf420cf4f0 - std::sys_common::thread::start_thread::hf68c3b122bfe3a6a [INFO] [stderr] at src/libstd/sys_common/thread.rs:13 [INFO] [stderr] 52: 0x7fbf420cf4f0 - std::sys::unix::thread::Thread::new::thread_start::h7db2e2b219b94091 [INFO] [stderr] at src/libstd/sys/unix/thread.rs:79 [INFO] [stderr] 53: 0x7fbf41e414a4 - start_thread [INFO] [stderr] 54: 0x7fbf41777d0f - __clone [INFO] [stderr] 55: 0x0 - [INFO] [stderr] query stack during panic: [INFO] [stderr] #0 [borrowck] processing `bst::bst::BST::::find_mut` [INFO] [stderr] #1 [mir_borrowck] processing `bst::bst::BST::::find_mut` [INFO] [stderr] #2 [analysis] running analysis passes on this crate [INFO] [stderr] end of query stack [INFO] [stderr] [INFO] [stderr] error: internal compiler error: unexpected panic [INFO] [stderr] [INFO] [stderr] [INFO] [stderr] error: internal compiler error: unexpected panic [INFO] [stderr] [INFO] [stderr] note: the compiler unexpectedly panicked. this is a bug. [INFO] [stderr] [INFO] [stderr] note: we would appreciate a bug report: https://github.com/rust-lang/rust/blob/master/CONTRIBUTING.md#bug-reports [INFO] [stderr] [INFO] [stderr] note: rustc 1.37.0-nightly (9f0685506 2019-06-15) running on x86_64-unknown-linux-gnu [INFO] [stderr] [INFO] [stderr] note: compiler flags: -C debuginfo=2 --crate-type lib [INFO] [stderr] [INFO] [stderr] note: some of the compiler flags provided by cargo are hidden [INFO] [stderr] [INFO] [stderr] note: the compiler unexpectedly panicked. this is a bug. [INFO] [stderr] [INFO] [stderr] note: we would appreciate a bug report: https://github.com/rust-lang/rust/blob/master/CONTRIBUTING.md#bug-reports [INFO] [stderr] [INFO] [stderr] note: rustc 1.37.0-nightly (9f0685506 2019-06-15) running on x86_64-unknown-linux-gnu [INFO] [stderr] [INFO] [stderr] note: compiler flags: -C debuginfo=2 [INFO] [stderr] [INFO] [stderr] note: some of the compiler flags provided by cargo are hidden [INFO] [stderr] [INFO] [stderr] error: Could not compile `rust_learning`. [INFO] [stderr] warning: build failed, waiting for other jobs to finish... [INFO] [stderr] error: Could not compile `rust_learning`. [INFO] [stderr] [INFO] [stderr] To learn more, run the command again with --verbose. [INFO] running `"docker" "inspect" "e662b19c877d2d63ff4aaded73512c4e06cbb5d3bc79f8a66e203b502be40c6d"` [INFO] running `"docker" "rm" "-f" "e662b19c877d2d63ff4aaded73512c4e06cbb5d3bc79f8a66e203b502be40c6d"` [INFO] [stdout] e662b19c877d2d63ff4aaded73512c4e06cbb5d3bc79f8a66e203b502be40c6d