Shorten backtraces in ICEs

[jyn514]

Right now, the backtraces in an ICE are almost unreadably long (250+ frames, sometimes as much as 400+). See message.txt for an example.

Most of these frames are not particularly useful. Consider for example this snippet:

rustc_query_impl plumbing

             3: <rustc_query_system::dep_graph::graph::DepGraph<rustc_middle::dep_graph::dep_node::DepKind>>::with_task_impl::<rustc_middle::ty::context::TyCtxt, (), std::collections::hash::map::HashMap<rustc_span::def_id::DefId, rustc_span::symbol::Symbol, core::hash::BuildHasherDefault<rustc_hash::FxHasher>>>::{closure#0}
                       at ./compiler/rustc_query_system/src/dep_graph/graph.rs:340:53
             4: rustc_middle::ty::context::tls::tlv::with_tlv::<<rustc_query_system::dep_graph::graph::DepGraph<rustc_middle::dep_graph::dep_node::DepKind>>::with_task_impl<rustc_middle::ty::context::TyCtxt, (), std::collections::hash::map::HashMap<rustc_span::def_id::DefId, rustc_span::symbol::Symbol, core::hash::BuildHasherDefault<rustc_hash::FxHasher>>>::{closure#0}, std::collections::hash::map::HashMap<rustc_span::def_id::DefId, rustc_span::symbol::Symbol, core::hash::BuildHasherDefault<rustc_hash::FxHasher>>>
                       at ./compiler/rustc_middle/src/ty/context/tls.rs:94:9
             5: rustc_middle::ty::context::tls::enter_context::<<rustc_query_system::dep_graph::graph::DepGraph<rustc_middle::dep_graph::dep_node::DepKind>>::with_task_impl<rustc_middle::ty::context::TyCtxt, (), std::collections::hash::map::HashMap<rustc_span::def_id::DefId, rustc_span::symbol::Symbol, core::hash::BuildHasherDefault<rustc_hash::FxHasher>>>::{closure#0}, std::collections::hash::map::HashMap<rustc_span::def_id::DefId, rustc_span::symbol::Symbol, core::hash::BuildHasherDefault<rustc_hash::FxHasher>>>
                       at ./compiler/rustc_middle/src/ty/context/tls.rs:114:5
             6: <rustc_middle::dep_graph::dep_node::DepKind as rustc_query_system::dep_graph::DepKind>::with_deps::<<rustc_query_system::dep_graph::graph::DepGraph<rustc_middle::dep_graph::dep_node::DepKind>>::with_task_impl<rustc_middle::ty::context::TyCtxt, (), std::collections::hash::map::HashMap<rustc_span::def_id::DefId, rustc_span::symbol::Symbol, core::hash::BuildHasherDefault<rustc_hash::FxHasher>>>::{closure#0}, std::collections::hash::map::HashMap<rustc_span::def_id::DefId, rustc_span::symbol::Symbol, core::hash::BuildHasherDefault<rustc_hash::FxHasher>>>::{closure#0}
                       at ./compiler/rustc_middle/src/dep_graph/mod.rs:58:13
             7: rustc_middle::ty::context::tls::with_context::<<rustc_middle::dep_graph::dep_node::DepKind as rustc_query_system::dep_graph::DepKind>::with_deps<<rustc_query_system::dep_graph::graph::DepGraph<rustc_middle::dep_graph::dep_node::DepKind>>::with_task_impl<rustc_middle::ty::context::TyCtxt, (), std::collections::hash::map::HashMap<rustc_span::def_id::DefId, rustc_span::symbol::Symbol, core::hash::BuildHasherDefault<rustc_hash::FxHasher>>>::{closure#0}, std::collections::hash::map::HashMap<rustc_span::def_id::DefId, rustc_span::symbol::Symbol, core::hash::BuildHasherDefault<rustc_hash::FxHasher>>>::{closure#0}, std::collections::hash::map::HashMap<rustc_span::def_id::DefId, rustc_span::symbol::Symbol, core::hash::BuildHasherDefault<rustc_hash::FxHasher>>>::{closure#0}
                       at ./compiler/rustc_middle/src/ty/context/tls.rs:142:36
             8: rustc_middle::ty::context::tls::with_context_opt::<rustc_middle::ty::context::tls::with_context<<rustc_middle::dep_graph::dep_node::DepKind as rustc_query_system::dep_graph::DepKind>::with_deps<<rustc_query_system::dep_graph::graph::DepGraph<rustc_middle::dep_graph::dep_node::DepKind>>::with_task_impl<rustc_middle::ty::context::TyCtxt, (), std::collections::hash::map::HashMap<rustc_span::def_id::DefId, rustc_span::symbol::Symbol, core::hash::BuildHasherDefault<rustc_hash::FxHasher>>>::{closure#0}, std::collections::hash::map::HashMap<rustc_span::def_id::DefId, rustc_span::symbol::Symbol, core::hash::BuildHasherDefault<rustc_hash::FxHasher>>>::{closure#0}, std::collections::hash::map::HashMap<rustc_span::def_id::DefId, rustc_span::symbol::Symbol, core::hash::BuildHasherDefault<rustc_hash::FxHasher>>>::{closure#0}, std::collections::hash::map::HashMap<rustc_span::def_id::DefId, rustc_span::symbol::Symbol, core::hash::BuildHasherDefault<rustc_hash::FxHasher>>>
                       at ./compiler/rustc_middle/src/ty/context/tls.rs:131:18
             9: rustc_middle::ty::context::tls::with_context::<<rustc_middle::dep_graph::dep_node::DepKind as rustc_query_system::dep_graph::DepKind>::with_deps<<rustc_query_system::dep_graph::graph::DepGraph<rustc_middle::dep_graph::dep_node::DepKind>>::with_task_impl<rustc_middle::ty::context::TyCtxt, (), std::collections::hash::map::HashMap<rustc_span::def_id::DefId, rustc_span::symbol::Symbol, core::hash::BuildHasherDefault<rustc_hash::FxHasher>>>::{closure#0}, std::collections::hash::map::HashMap<rustc_span::def_id::DefId, rustc_span::symbol::Symbol, core::hash::BuildHasherDefault<rustc_hash::FxHasher>>>::{closure#0}, std::collections::hash::map::HashMap<rustc_span::def_id::DefId, rustc_span::symbol::Symbol, core::hash::BuildHasherDefault<rustc_hash::FxHasher>>>
                       at ./compiler/rustc_middle/src/ty/context/tls.rs:142:5
            10: <rustc_middle::dep_graph::dep_node::DepKind as rustc_query_system::dep_graph::DepKind>::with_deps::<<rustc_query_system::dep_graph::graph::DepGraph<rustc_middle::dep_graph::dep_node::DepKind>>::with_task_impl<rustc_middle::ty::context::TyCtxt, (), std::collections::hash::map::HashMap<rustc_span::def_id::DefId, rustc_span::symbol::Symbol, core::hash::BuildHasherDefault<rustc_hash::FxHasher>>>::{closure#0}, std::collections::hash::map::HashMap<rustc_span::def_id::DefId, rustc_span::symbol::Symbol, core::hash::BuildHasherDefault<rustc_hash::FxHasher>>>
                       at ./compiler/rustc_middle/src/dep_graph/mod.rs:55:9
            11: <rustc_query_system::dep_graph::graph::DepGraph<rustc_middle::dep_graph::dep_node::DepKind>>::with_task_impl::<rustc_middle::ty::context::TyCtxt, (), std::collections::hash::map::HashMap<rustc_span::def_id::DefId, rustc_span::symbol::Symbol, core::hash::BuildHasherDefault<rustc_hash::FxHasher>>>
                       at ./compiler/rustc_query_system/src/dep_graph/graph.rs:340:22
            12: <rustc_query_system::dep_graph::graph::DepGraph<rustc_middle::dep_graph::dep_node::DepKind>>::with_task::<rustc_middle::ty::context::TyCtxt, (), std::collections::hash::map::HashMap<rustc_span::def_id::DefId, rustc_span::symbol::Symbol, core::hash::BuildHasherDefault<rustc_hash::FxHasher>>>
                       at ./compiler/rustc_query_system/src/dep_graph/graph.rs:290:13
            13: rustc_query_system::query::plumbing::execute_job::<rustc_query_impl::queries::trimmed_def_paths, rustc_query_impl::plumbing::QueryCtxt>::{closure#3}
                       at ./compiler/rustc_query_system/src/query/plumbing.rs:467:13
            14: stacker::maybe_grow::<(std::collections::hash::map::HashMap<rustc_span::def_id::DefId, rustc_span::symbol::Symbol, core::hash::BuildHasherDefault<rustc_hash::FxHasher>>, rustc_query_system::dep_graph::graph::DepNodeIndex), rustc_query_system::query::plumbing::execute_job<rustc_query_impl::queries::trimmed_def_paths, rustc_query_impl::plumbing::QueryCtxt>::{closure#3}>
                       at /home/gh-yaahc/.cargo/registry/src/github.tiyicn.workers.dev-1ecc6299db9ec823/stacker-0.1.15/src/lib.rs:55:9
            15: rustc_data_structures::stack::ensure_sufficient_stack::<(std::collections::hash::map::HashMap<rustc_span::def_id::DefId, rustc_span::symbol::Symbol, core::hash::BuildHasherDefault<rustc_hash::FxHasher>>, rustc_query_system::dep_graph::graph::DepNodeIndex), rustc_query_system::query::plumbing::execute_job<rustc_query_impl::queries::trimmed_def_paths, rustc_query_impl::plumbing::QueryCtxt>::{closure#3}>
                       at ./compiler/rustc_data_structures/src/stack.rs:17:5
            16: <rustc_query_impl::plumbing::QueryCtxt as rustc_query_system::query::QueryContext>::start_query::<(std::collections::hash::map::HashMap<rustc_span::def_id::DefId, rustc_span::symbol::Symbol, core::hash::BuildHasherDefault<rustc_hash::FxHasher>>, rustc_query_system::dep_graph::graph::DepNodeIndex), rustc_query_system::query::plumbing::execute_job<rustc_query_impl::queries::trimmed_def_paths, rustc_query_impl::plumbing::QueryCtxt>::{closure#3}>::{closure#0}::{closure#0}
                       at ./compiler/rustc_query_impl/src/plumbing.rs:128:17
            17: rustc_middle::ty::context::tls::tlv::with_tlv::<<rustc_query_impl::plumbing::QueryCtxt as rustc_query_system::query::QueryContext>::start_query<(std::collections::hash::map::HashMap<rustc_span::def_id::DefId, rustc_span::symbol::Symbol, core::hash::BuildHasherDefault<rustc_hash::FxHasher>>, rustc_query_system::dep_graph::graph::DepNodeIndex), rustc_query_system::query::plumbing::execute_job<rustc_query_impl::queries::trimmed_def_paths, rustc_query_impl::plumbing::QueryCtxt>::{closure#3}>::{closure#0}::{closure#0}, (std::collections::hash::map::HashMap<rustc_span::def_id::DefId, rustc_span::symbol::Symbol, core::hash::BuildHasherDefault<rustc_hash::FxHasher>>, rustc_query_system::dep_graph::graph::DepNodeIndex)>
                       at ./compiler/rustc_middle/src/ty/context/tls.rs:94:9
            18: rustc_middle::ty::context::tls::enter_context::<<rustc_query_impl::plumbing::QueryCtxt as rustc_query_system::query::QueryContext>::start_query<(std::collections::hash::map::HashMap<rustc_span::def_id::DefId, rustc_span::symbol::Symbol, core::hash::BuildHasherDefault<rustc_hash::FxHasher>>, rustc_query_system::dep_graph::graph::DepNodeIndex), rustc_query_system::query::plumbing::execute_job<rustc_query_impl::queries::trimmed_def_paths, rustc_query_impl::plumbing::QueryCtxt>::{closure#3}>::{closure#0}::{closure#0}, (std::collections::hash::map::HashMap<rustc_span::def_id::DefId, rustc_span::symbol::Symbol, core::hash::BuildHasherDefault<rustc_hash::FxHasher>>, rustc_query_system::dep_graph::graph::DepNodeIndex)>
                       at ./compiler/rustc_middle/src/ty/context/tls.rs:114:5
            19: <rustc_query_impl::plumbing::QueryCtxt as rustc_query_system::query::QueryContext>::start_query::<(std::collections::hash::map::HashMap<rustc_span::def_id::DefId, rustc_span::symbol::Symbol, core::hash::BuildHasherDefault<rustc_hash::FxHasher>>, rustc_query_system::dep_graph::graph::DepNodeIndex), rustc_query_system::query::plumbing::execute_job<rustc_query_impl::queries::trimmed_def_paths, rustc_query_impl::plumbing::QueryCtxt>::{closure#3}>::{closure#0}
                       at ./compiler/rustc_query_impl/src/plumbing.rs:127:13
            20: rustc_middle::ty::context::tls::with_related_context::<<rustc_query_impl::plumbing::QueryCtxt as rustc_query_system::query::QueryContext>::start_query<(std::collections::hash::map::HashMap<rustc_span::def_id::DefId, rustc_span::symbol::Symbol, core::hash::BuildHasherDefault<rustc_hash::FxHasher>>, rustc_query_system::dep_graph::graph::DepNodeIndex), rustc_query_system::query::plumbing::execute_job<rustc_query_impl::queries::trimmed_def_paths, rustc_query_impl::plumbing::QueryCtxt>::{closure#3}>::{closure#0}, (std::collections::hash::map::HashMap<rustc_span::def_id::DefId, rustc_span::symbol::Symbol, core::hash::BuildHasherDefault<rustc_hash::FxHasher>>, rustc_query_system::dep_graph::graph::DepNodeIndex)>::{closure#0}
                       at ./compiler/rustc_middle/src/ty/context/tls.rs:164:9
            21: rustc_middle::ty::context::tls::with_context::<rustc_middle::ty::context::tls::with_related_context<<rustc_query_impl::plumbing::QueryCtxt as rustc_query_system::query::QueryContext>::start_query<(std::collections::hash::map::HashMap<rustc_span::def_id::DefId, rustc_span::symbol::Symbol, core::hash::BuildHasherDefault<rustc_hash::FxHasher>>, rustc_query_system::dep_graph::graph::DepNodeIndex), rustc_query_system::query::plumbing::execute_job<rustc_query_impl::queries::trimmed_def_paths, rustc_query_impl::plumbing::QueryCtxt>::{closure#3}>::{closure#0}, (std::collections::hash::map::HashMap<rustc_span::def_id::DefId, rustc_span::symbol::Symbol, core::hash::BuildHasherDefault<rustc_hash::FxHasher>>, rustc_query_system::dep_graph::graph::DepNodeIndex)>::{closure#0}, (std::collections::hash::map::HashMap<rustc_span::def_id::DefId, rustc_span::symbol::Symbol, core::hash::BuildHasherDefault<rustc_hash::FxHasher>>, rustc_query_system::dep_graph::graph::DepNodeIndex)>::{closure#0}
                       at ./compiler/rustc_middle/src/ty/context/tls.rs:142:36
            22: rustc_middle::ty::context::tls::with_context_opt::<rustc_middle::ty::context::tls::with_context<rustc_middle::ty::context::tls::with_related_context<<rustc_query_impl::plumbing::QueryCtxt as rustc_query_system::query::QueryContext>::start_query<(std::collections::hash::map::HashMap<rustc_span::def_id::DefId, rustc_span::symbol::Symbol, core::hash::BuildHasherDefault<rustc_hash::FxHasher>>, rustc_query_system::dep_graph::graph::DepNodeIndex), rustc_query_system::query::plumbing::execute_job<rustc_query_impl::queries::trimmed_def_paths, rustc_query_impl::plumbing::QueryCtxt>::{closure#3}>::{closure#0}, (std::collections::hash::map::HashMap<rustc_span::def_id::DefId, rustc_span::symbol::Symbol, core::hash::BuildHasherDefault<rustc_hash::FxHasher>>, rustc_query_system::dep_graph::graph::DepNodeIndex)>::{closure#0}, (std::collections::hash::map::HashMap<rustc_span::def_id::DefId, rustc_span::symbol::Symbol, core::hash::BuildHasherDefault<rustc_hash::FxHasher>>, rustc_query_system::dep_graph::graph::DepNodeIndex)>::{closure#0}, (std::collections::hash::map::HashMap<rustc_span::def_id::DefId, rustc_span::symbol::Symbol, core::hash::BuildHasherDefault<rustc_hash::FxHasher>>, rustc_query_system::dep_graph::graph::DepNodeIndex)>
                       at ./compiler/rustc_middle/src/ty/context/tls.rs:131:18
            23: rustc_middle::ty::context::tls::with_context::<rustc_middle::ty::context::tls::with_related_context<<rustc_query_impl::plumbing::QueryCtxt as rustc_query_system::query::QueryContext>::start_query<(std::collections::hash::map::HashMap<rustc_span::def_id::DefId, rustc_span::symbol::Symbol, core::hash::BuildHasherDefault<rustc_hash::FxHasher>>, rustc_query_system::dep_graph::graph::DepNodeIndex), rustc_query_system::query::plumbing::execute_job<rustc_query_impl::queries::trimmed_def_paths, rustc_query_impl::plumbing::QueryCtxt>::{closure#3}>::{closure#0}, (std::collections::hash::map::HashMap<rustc_span::def_id::DefId, rustc_span::symbol::Symbol, core::hash::BuildHasherDefault<rustc_hash::FxHasher>>, rustc_query_system::dep_graph::graph::DepNodeIndex)>::{closure#0}, (std::collections::hash::map::HashMap<rustc_span::def_id::DefId, rustc_span::symbol::Symbol, core::hash::BuildHasherDefault<rustc_hash::FxHasher>>, rustc_query_system::dep_graph::graph::DepNodeIndex)>
                       at ./compiler/rustc_middle/src/ty/context/tls.rs:142:5
            24: rustc_middle::ty::context::tls::with_related_context::<<rustc_query_impl::plumbing::QueryCtxt as rustc_query_system::query::QueryContext>::start_query<(std::collections::hash::map::HashMap<rustc_span::def_id::DefId, rustc_span::symbol::Symbol, core::hash::BuildHasherDefault<rustc_hash::FxHasher>>, rustc_query_system::dep_graph::graph::DepNodeIndex), rustc_query_system::query::plumbing::execute_job<rustc_query_impl::queries::trimmed_def_paths, rustc_query_impl::plumbing::QueryCtxt>::{closure#3}>::{closure#0}, (std::collections::hash::map::HashMap<rustc_span::def_id::DefId, rustc_span::symbol::Symbol, core::hash::BuildHasherDefault<rustc_hash::FxHasher>>, rustc_query_system::dep_graph::graph::DepNodeIndex)>
                       at ./compiler/rustc_middle/src/ty/context/tls.rs:155:5
            25: <rustc_query_impl::plumbing::QueryCtxt as rustc_query_system::query::QueryContext>::start_query::<(std::collections::hash::map::HashMap<rustc_span::def_id::DefId, rustc_span::symbol::Symbol, core::hash::BuildHasherDefault<rustc_hash::FxHasher>>, rustc_query_system::dep_graph::graph::DepNodeIndex), rustc_query_system::query::plumbing::execute_job<rustc_query_impl::queries::trimmed_def_paths, rustc_query_impl::plumbing::QueryCtxt>::{closure#3}>
                       at ./compiler/rustc_query_impl/src/plumbing.rs:112:9
            26: rustc_query_system::query::plumbing::execute_job::<rustc_query_impl::queries::trimmed_def_paths, rustc_query_impl::plumbing::QueryCtxt>
                       at ./compiler/rustc_query_system/src/query/plumbing.rs:455:9
            27: rustc_query_system::query::plumbing::try_execute_query::<rustc_query_impl::queries::trimmed_def_paths, rustc_query_impl::plumbing::QueryCtxt>
                       at ./compiler/rustc_query_system/src/query/plumbing.rs:369:17
            28: rustc_query_system::query::plumbing::force_query::<rustc_query_impl::queries::trimmed_def_paths, rustc_query_impl::plumbing::QueryCtxt, rustc_middle::dep_graph::dep_node::DepKind>
                       at ./compiler/rustc_query_system/src/query/plumbing.rs:779:5
            29: rustc_query_impl::plumbing::force_from_dep_node::<rustc_query_impl::queries::trimmed_def_paths>
                       at ./compiler/rustc_query_impl/src/plumbing.rs:408:9
            30: <rustc_middle::ty::context::TyCtxt as rustc_query_system::dep_graph::DepContext>::try_force_from_dep_node
                       at ./compiler/rustc_query_system/src/dep_graph/mod.rs:59:13
            31: <rustc_query_system::dep_graph::graph::DepGraph<rustc_middle::dep_graph::dep_node::DepKind>>::try_mark_parent_green::<rustc_query_impl::plumbing::QueryCtxt>
                       at ./compiler/rustc_query_system/src/dep_graph/graph.rs:736:13
            32: <rustc_query_system::dep_graph::graph::DepGraph<rustc_middle::dep_graph::dep_node::DepKind>>::try_mark_previous_green::<rustc_query_impl::plumbing::QueryCtxt>
                       at ./compiler/rustc_query_system/src/dep_graph/graph.rs:797:13
            33: <rustc_query_system::dep_graph::graph::DepGraph<rustc_middle::dep_graph::dep_node::DepKind>>::try_mark_parent_green::<rustc_query_impl::plumbing::QueryCtxt>
                       at ./compiler/rustc_query_system/src/dep_graph/graph.rs:726:17
            34: <rustc_query_system::dep_graph::graph::DepGraph<rustc_middle::dep_graph::dep_node::DepKind>>::try_mark_previous_green::<rustc_query_impl::plumbing::QueryCtxt>
                       at ./compiler/rustc_query_system/src/dep_graph/graph.rs:797:13
            35: <rustc_query_system::dep_graph::graph::DepGraph<rustc_middle::dep_graph::dep_node::DepKind>>::try_mark_parent_green::<rustc_query_impl::plumbing::QueryCtxt>
                       at ./compiler/rustc_query_system/src/dep_graph/graph.rs:726:17
            36: <rustc_query_system::dep_graph::graph::DepGraph<rustc_middle::dep_graph::dep_node::DepKind>>::try_mark_previous_green::<rustc_query_impl::plumbing::QueryCtxt>
                       at ./compiler/rustc_query_system/src/dep_graph/graph.rs:797:13
            37: <rustc_query_system::dep_graph::graph::DepGraph<rustc_middle::dep_graph::dep_node::DepKind>>::try_mark_parent_green::<rustc_query_impl::plumbing::QueryCtxt>
                       at ./compiler/rustc_query_system/src/dep_graph/graph.rs:726:17
            38: <rustc_query_system::dep_graph::graph::DepGraph<rustc_middle::dep_graph::dep_node::DepKind>>::try_mark_previous_green::<rustc_query_impl::plumbing::QueryCtxt>
                       at ./compiler/rustc_query_system/src/dep_graph/graph.rs:797:13
            39: <rustc_query_system::dep_graph::graph::DepGraph<rustc_middle::dep_graph::dep_node::DepKind>>::try_mark_parent_green::<rustc_query_impl::plumbing::QueryCtxt>
                       at ./compiler/rustc_query_system/src/dep_graph/graph.rs:726:17
            40: <rustc_query_system::dep_graph::graph::DepGraph<rustc_middle::dep_graph::dep_node::DepKind>>::try_mark_previous_green::<rustc_query_impl::plumbing::QueryCtxt>
                       at ./compiler/rustc_query_system/src/dep_graph/graph.rs:797:13
            41: <rustc_query_system::dep_graph::graph::DepGraph<rustc_middle::dep_graph::dep_node::DepKind>>::try_mark_parent_green::<rustc_query_impl::plumbing::QueryCtxt>
                       at ./compiler/rustc_query_system/src/dep_graph/graph.rs:726:17
            42: <rustc_query_system::dep_graph::graph::DepGraph<rustc_middle::dep_graph::dep_node::DepKind>>::try_mark_previous_green::<rustc_query_impl::plumbing::QueryCtxt>
                       at ./compiler/rustc_query_system/src/dep_graph/graph.rs:797:13
            43: <rustc_query_system::dep_graph::graph::DepGraph<rustc_middle::dep_graph::dep_node::DepKind>>::try_mark_parent_green::<rustc_query_impl::plumbing::QueryCtxt>
                       at ./compiler/rustc_query_system/src/dep_graph/graph.rs:726:17
            44: <rustc_query_system::dep_graph::graph::DepGraph<rustc_middle::dep_graph::dep_node::DepKind>>::try_mark_previous_green::<rustc_query_impl::plumbing::QueryCtxt>
                       at ./compiler/rustc_query_system/src/dep_graph/graph.rs:797:13
            45: <rustc_query_system::dep_graph::graph::DepGraph<rustc_middle::dep_graph::dep_node::DepKind>>::try_mark_parent_green::<rustc_query_impl::plumbing::QueryCtxt>
                       at ./compiler/rustc_query_system/src/dep_graph/graph.rs:726:17
            46: <rustc_query_system::dep_graph::graph::DepGraph<rustc_middle::dep_graph::dep_node::DepKind>>::try_mark_previous_green::<rustc_query_impl::plumbing::QueryCtxt>
                       at ./compiler/rustc_query_system/src/dep_graph/graph.rs:797:13
            47: <rustc_query_system::dep_graph::graph::DepGraph<rustc_middle::dep_graph::dep_node::DepKind>>::try_mark_parent_green::<rustc_query_impl::plumbing::QueryCtxt>
                       at ./compiler/rustc_query_system/src/dep_graph/graph.rs:726:17
            48: <rustc_query_system::dep_graph::graph::DepGraph<rustc_middle::dep_graph::dep_node::DepKind>>::try_mark_previous_green::<rustc_query_impl::plumbing::QueryCtxt>
                       at ./compiler/rustc_query_system/src/dep_graph/graph.rs:797:13
            49: <rustc_query_system::dep_graph::graph::DepGraph<rustc_middle::dep_graph::dep_node::DepKind>>::try_mark_parent_green::<rustc_query_impl::plumbing::QueryCtxt>
                       at ./compiler/rustc_query_system/src/dep_graph/graph.rs:726:17
            50: <rustc_query_system::dep_graph::graph::DepGraph<rustc_middle::dep_graph::dep_node::DepKind>>::try_mark_previous_green::<rustc_query_impl::plumbing::QueryCtxt>
                       at ./compiler/rustc_query_system/src/dep_graph/graph.rs:797:13
            51: <rustc_query_system::dep_graph::graph::DepGraph<rustc_middle::dep_graph::dep_node::DepKind>>::try_mark_green::<rustc_query_impl::plumbing::QueryCtxt>
                       at ./compiler/rustc_query_system/src/dep_graph/graph.rs:681:17
            52: rustc_query_system::query::plumbing::try_load_from_disk_and_cache_in_memory::<rustc_query_impl::queries::type_of, rustc_query_impl::plumbing::QueryCtxt>
                       at ./compiler/rustc_query_system/src/query/plumbing.rs:499:49
            53: rustc_query_system::query::plumbing::execute_job::<rustc_query_impl::queries::type_of, rustc_query_impl::plumbing::QueryCtxt>::{closure#2}
                       at ./compiler/rustc_query_system/src/query/plumbing.rs:445:13
            54: stacker::maybe_grow::<core::option::Option<(rustc_middle::ty::Ty, rustc_query_system::dep_graph::graph::DepNodeIndex)>, rustc_query_system::query::plumbing::execute_job<rustc_query_impl::queries::type_of, rustc_query_impl::plumbing::QueryCtxt>::{closure#2}>
                       at /home/gh-yaahc/.cargo/registry/src/github.tiyicn.workers.dev-1ecc6299db9ec823/stacker-0.1.15/src/lib.rs:55:9
            55: rustc_data_structures::stack::ensure_sufficient_stack::<core::option::Option<(rustc_middle::ty::Ty, rustc_query_system::dep_graph::graph::DepNodeIndex)>, rustc_query_system::query::plumbing::execute_job<rustc_query_impl::queries::type_of, rustc_query_impl::plumbing::QueryCtxt>::{closure#2}>
                       at ./compiler/rustc_data_structures/src/stack.rs:17:5
            56: <rustc_query_impl::plumbing::QueryCtxt as rustc_query_system::query::QueryContext>::start_query::<core::option::Option<(rustc_middle::ty::Ty, rustc_query_system::dep_graph::graph::DepNodeIndex)>, rustc_query_system::query::plumbing::execute_job<rustc_query_impl::queries::type_of, rustc_query_impl::plumbing::QueryCtxt>::{closure#2}>::{closure#0}::{closure#0}
                       at ./compiler/rustc_query_impl/src/plumbing.rs:128:17
            57: rustc_middle::ty::context::tls::tlv::with_tlv::<<rustc_query_impl::plumbing::QueryCtxt as rustc_query_system::query::QueryContext>::start_query<core::option::Option<(rustc_middle::ty::Ty, rustc_query_system::dep_graph::graph::DepNodeIndex)>, rustc_query_system::query::plumbing::execute_job<rustc_query_impl::queries::type_of, rustc_query_impl::plumbing::QueryCtxt>::{closure#2}>::{closure#0}::{closure#0}, core::option::Option<(rustc_middle::ty::Ty, rustc_query_system::dep_graph::graph::DepNodeIndex)>>
                       at ./compiler/rustc_middle/src/ty/context/tls.rs:94:9
            58: rustc_middle::ty::context::tls::enter_context::<<rustc_query_impl::plumbing::QueryCtxt as rustc_query_system::query::QueryContext>::start_query<core::option::Option<(rustc_middle::ty::Ty, rustc_query_system::dep_graph::graph::DepNodeIndex)>, rustc_query_system::query::plumbing::execute_job<rustc_query_impl::queries::type_of, rustc_query_impl::plumbing::QueryCtxt>::{closure#2}>::{closure#0}::{closure#0}, core::option::Option<(rustc_middle::ty::Ty, rustc_query_system::dep_graph::graph::DepNodeIndex)>>
                       at ./compiler/rustc_middle/src/ty/context/tls.rs:114:5
            59: <rustc_query_impl::plumbing::QueryCtxt as rustc_query_system::query::QueryContext>::start_query::<core::option::Option<(rustc_middle::ty::Ty, rustc_query_system::dep_graph::graph::DepNodeIndex)>, rustc_query_system::query::plumbing::execute_job<rustc_query_impl::queries::type_of, rustc_query_impl::plumbing::QueryCtxt>::{closure#2}>::{closure#0}
                       at ./compiler/rustc_query_impl/src/plumbing.rs:127:13
            60: rustc_middle::ty::context::tls::with_related_context::<<rustc_query_impl::plumbing::QueryCtxt as rustc_query_system::query::QueryContext>::start_query<core::option::Option<(rustc_middle::ty::Ty, rustc_query_system::dep_graph::graph::DepNodeIndex)>, rustc_query_system::query::plumbing::execute_job<rustc_query_impl::queries::type_of, rustc_query_impl::plumbing::QueryCtxt>::{closure#2}>::{closure#0}, core::option::Option<(rustc_middle::ty::Ty, rustc_query_system::dep_graph::graph::DepNodeIndex)>>::{closure#0}
                       at ./compiler/rustc_middle/src/ty/context/tls.rs:164:9
            61: rustc_middle::ty::context::tls::with_context::<rustc_middle::ty::context::tls::with_related_context<<rustc_query_impl::plumbing::QueryCtxt as rustc_query_system::query::QueryContext>::start_query<core::option::Option<(rustc_middle::ty::Ty, rustc_query_system::dep_graph::graph::DepNodeIndex)>, rustc_query_system::query::plumbing::execute_job<rustc_query_impl::queries::type_of, rustc_query_impl::plumbing::QueryCtxt>::{closure#2}>::{closure#0}, core::option::Option<(rustc_middle::ty::Ty, rustc_query_system::dep_graph::graph::DepNodeIndex)>>::{closure#0}, core::option::Option<(rustc_middle::ty::Ty, rustc_query_system::dep_graph::graph::DepNodeIndex)>>::{closure#0}
                       at ./compiler/rustc_middle/src/ty/context/tls.rs:142:36
            62: rustc_middle::ty::context::tls::with_context_opt::<rustc_middle::ty::context::tls::with_context<rustc_middle::ty::context::tls::with_related_context<<rustc_query_impl::plumbing::QueryCtxt as rustc_query_system::query::QueryContext>::start_query<core::option::Option<(rustc_middle::ty::Ty, rustc_query_system::dep_graph::graph::DepNodeIndex)>, rustc_query_system::query::plumbing::execute_job<rustc_query_impl::queries::type_of, rustc_query_impl::plumbing::QueryCtxt>::{closure#2}>::{closure#0}, core::option::Option<(rustc_middle::ty::Ty, rustc_query_system::dep_graph::graph::DepNodeIndex)>>::{closure#0}, core::option::Option<(rustc_middle::ty::Ty, rustc_query_system::dep_graph::graph::DepNodeIndex)>>::{closure#0}, core::option::Option<(rustc_middle::ty::Ty, rustc_query_system::dep_graph::graph::DepNodeIndex)>>
                       at ./compiler/rustc_middle/src/ty/context/tls.rs:131:18
            63: rustc_middle::ty::context::tls::with_context::<rustc_middle::ty::context::tls::with_related_context<<rustc_query_impl::plumbing::QueryCtxt as rustc_query_system::query::QueryContext>::start_query<core::option::Option<(rustc_middle::ty::Ty, rustc_query_system::dep_graph::graph::DepNodeIndex)>, rustc_query_system::query::plumbing::execute_job<rustc_query_impl::queries::type_of, rustc_query_impl::plumbing::QueryCtxt>::{closure#2}>::{closure#0}, core::option::Option<(rustc_middle::ty::Ty, rustc_query_system::dep_graph::graph::DepNodeIndex)>>::{closure#0}, core::option::Option<(rustc_middle::ty::Ty, rustc_query_system::dep_graph::graph::DepNodeIndex)>>
                       at ./compiler/rustc_middle/src/ty/context/tls.rs:142:5
            64: rustc_middle::ty::context::tls::with_related_context::<<rustc_query_impl::plumbing::QueryCtxt as rustc_query_system::query::QueryContext>::start_query<core::option::Option<(rustc_middle::ty::Ty, rustc_query_system::dep_graph::graph::DepNodeIndex)>, rustc_query_system::query::plumbing::execute_job<rustc_query_impl::queries::type_of, rustc_query_impl::plumbing::QueryCtxt>::{closure#2}>::{closure#0}, core::option::Option<(rustc_middle::ty::Ty, rustc_query_system::dep_graph::graph::DepNodeIndex)>>
                       at ./compiler/rustc_middle/src/ty/context/tls.rs:155:5
            65: <rustc_query_impl::plumbing::QueryCtxt as rustc_query_system::query::QueryContext>::start_query::<core::option::Option<(rustc_middle::ty::Ty, rustc_query_system::dep_graph::graph::DepNodeIndex)>, rustc_query_system::query::plumbing::execute_job<rustc_query_impl::queries::type_of, rustc_query_impl::plumbing::QueryCtxt>::{closure#2}>
                       at ./compiler/rustc_query_impl/src/plumbing.rs:112:9
            66: rustc_query_system::query::plumbing::execute_job::<rustc_query_impl::queries::type_of, rustc_query_impl::plumbing::QueryCtxt>
                       at ./compiler/rustc_query_system/src/query/plumbing.rs:444:28
            67: rustc_query_system::query::plumbing::try_execute_query::<rustc_query_impl::queries::type_of, rustc_query_impl::plumbing::QueryCtxt>
                       at ./compiler/rustc_query_system/src/query/plumbing.rs:369:17
            68: rustc_query_system::query::plumbing::get_query::<rustc_query_impl::queries::type_of, rustc_query_impl::plumbing::QueryCtxt, rustc_middle::dep_graph::dep_node::DepKind>
                       at ./compiler/rustc_query_system/src/query/plumbing.rs:747:36
            69: <rustc_query_impl::Queries as rustc_middle::ty::query::QueryEngine>::type_of::{closure#0}
                       at ./compiler/rustc_query_impl/src/plumbing.rs:730:17
            70: <rustc_query_impl::Queries as rustc_middle::ty::query::QueryEngine>::type_of
                       at ./compiler/rustc_query_impl/src/lib.rs:44:1

The only useful information here is "the type_of query was run", but it takes up 140 lines and 70 frames of the backtrace.
We should collapse these unless the user opts-in: I'm imagining something like setting RUSTC_BACKTRACE=1 which hides the frames by default and RUSTC_BACKTRACE=full which expands them.

[jyn514]

rust/library/std/src/sys_common/backtrace.rs

Lines 76 to 80 in 4aa6afa

	if start && sym.contains("__rust_begin_short_backtrace") {
	stop = true;
	return;
	}
	if sym.contains("__rust_end_short_backtrace") {

looks like it will work for any function named __rust_begin_short_backtrace, not just the one in std, so it might be as simple as adding an inline(never) function with that name at

rust/compiler/rustc_query_impl/src/plumbing.rs

Line 730 in 4e163af

get_query::<queries::$name<'tcx>, _, rustc_middle::dep_graph::DepKind>(qcx, span, key, mode)

and

rust/compiler/rustc_query_system/src/dep_graph/graph.rs

Line 340 in 4aa6afa

let result = K::with_deps(task_deps_ref, || task(cx, arg));

[chenyukang]

@rustbot claim