[INFO] cloning repository https://github.com/ametisf/snapshot_repeat
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ametisf/snapshot_repeat" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fametisf%2Fsnapshot_repeat", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fametisf%2Fsnapshot_repeat'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] de4294bd29df1df4da16b70d04be1fe3b50c41f1
[INFO] testing ametisf/snapshot_repeat against try#ce59db7a1b1b012fb2793c4641c1bdecad7a128b for pr-85530
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fametisf%2Fsnapshot_repeat" "/workspace/builds/worker-12/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-12/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/ametisf/snapshot_repeat on toolchain ce59db7a1b1b012fb2793c4641c1bdecad7a128b
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ce59db7a1b1b012fb2793c4641c1bdecad7a128b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/ametisf/snapshot_repeat
[INFO] finished tweaking git repo https://github.com/ametisf/snapshot_repeat
[INFO] tweaked toml for git repo https://github.com/ametisf/snapshot_repeat written to /workspace/builds/worker-12/source/Cargo.toml
[INFO] crate git repo https://github.com/ametisf/snapshot_repeat already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ce59db7a1b1b012fb2793c4641c1bdecad7a128b" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+ce59db7a1b1b012fb2793c4641c1bdecad7a128b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 6817196a54bc5f0695f5348d08f55666f18e8254b3472a45ea0b7a91e8111d70
[INFO] running `Command { std: "docker" "start" "-a" "6817196a54bc5f0695f5348d08f55666f18e8254b3472a45ea0b7a91e8111d70", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6817196a54bc5f0695f5348d08f55666f18e8254b3472a45ea0b7a91e8111d70", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6817196a54bc5f0695f5348d08f55666f18e8254b3472a45ea0b7a91e8111d70", kill_on_drop: false }`
[INFO] [stdout] 6817196a54bc5f0695f5348d08f55666f18e8254b3472a45ea0b7a91e8111d70
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+ce59db7a1b1b012fb2793c4641c1bdecad7a128b" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 82d0f1c6fff08b9a60b5ec6dead9262e9623f199cb4f09c3bb315051446af5e1
[INFO] running `Command { std: "docker" "start" "-a" "82d0f1c6fff08b9a60b5ec6dead9262e9623f199cb4f09c3bb315051446af5e1", kill_on_drop: false }`
[INFO] [stderr]    Compiling cc v1.0.66
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling libc v0.2.81
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]    Compiling log v0.4.11
[INFO] [stderr]    Compiling cfg-if v0.1.10
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling libloading v0.5.2
[INFO] [stderr]    Compiling vst v0.2.1 (https://github.com/RustAudio/vst-rs?rev=02847c7#02847c73)
[INFO] [stderr]    Compiling snapshot_repeat v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the feature `slice_fill` has been stable since 1.50.0 and no longer requires an attribute to enable
[INFO] [stdout]  --> src/lib.rs:4:12
[INFO] [stdout]   |
[INFO] [stdout] 4 | #![feature(slice_fill)]
[INFO] [stdout]   |            ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(stable_features)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] thread 'rustc' panicked at 'Box<Any>', /rustc/ce59db7a1b1b012fb2793c4641c1bdecad7a128b/library/std/src/panic.rs:59:5
[INFO] [stdout] error: internal compiler error: compiler/rustc_symbol_mangling/src/v0.rs:568:17: symbol_names: unsupported constant of type `f32` (Const { ty: f32, val: Value(Scalar(0x3c23d70a)) })
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] stack backtrace:
[INFO] [stderr]    0:     0x7f956c5904c0 - std[77c0456e0eb29f0c]::backtrace_rs::backtrace::libunwind::trace
[INFO] [stderr]                                at /rustc/ce59db7a1b1b012fb2793c4641c1bdecad7a128b/library/std/src/../../backtrace/src/backtrace/libunwind.rs:90:5
[INFO] [stderr]    1:     0x7f956c5904c0 - std[77c0456e0eb29f0c]::backtrace_rs::backtrace::trace_unsynchronized::<std[77c0456e0eb29f0c]::sys_common::backtrace::_print_fmt::{closure#1}>
[INFO] [stderr]                                at /rustc/ce59db7a1b1b012fb2793c4641c1bdecad7a128b/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
[INFO] [stderr]    2:     0x7f956c5904c0 - std[77c0456e0eb29f0c]::sys_common::backtrace::_print_fmt
[INFO] [stderr]                                at /rustc/ce59db7a1b1b012fb2793c4641c1bdecad7a128b/library/std/src/sys_common/backtrace.rs:67:5
[INFO] [stderr]    3:     0x7f956c5904c0 - <std[77c0456e0eb29f0c]::sys_common::backtrace::_print::DisplayBacktrace as core[ee1ca6415511a9c4]::fmt::Display>::fmt
[INFO] [stderr]                                at /rustc/ce59db7a1b1b012fb2793c4641c1bdecad7a128b/library/std/src/sys_common/backtrace.rs:46:22
[INFO] [stderr]    4:     0x7f956c5fde9c - core[ee1ca6415511a9c4]::fmt::write
[INFO] [stderr]                                at /rustc/ce59db7a1b1b012fb2793c4641c1bdecad7a128b/library/core/src/fmt/mod.rs:1110:17
[INFO] [stderr]    5:     0x7f956c581e15 - <std[77c0456e0eb29f0c]::sys::unix::stdio::Stderr as std[77c0456e0eb29f0c]::io::Write>::write_fmt
[INFO] [stderr]                                at /rustc/ce59db7a1b1b012fb2793c4641c1bdecad7a128b/library/std/src/io/mod.rs:1584:15
[INFO] [stderr]    6:     0x7f956c59420b - std[77c0456e0eb29f0c]::sys_common::backtrace::_print
[INFO] [stderr]                                at /rustc/ce59db7a1b1b012fb2793c4641c1bdecad7a128b/library/std/src/sys_common/backtrace.rs:49:5
[INFO] [stderr]    7:     0x7f956c59420b - std[77c0456e0eb29f0c]::sys_common::backtrace::print
[INFO] [stderr]                                at /rustc/ce59db7a1b1b012fb2793c4641c1bdecad7a128b/library/std/src/sys_common/backtrace.rs:36:9
[INFO] [stderr]    8:     0x7f956c59420b - std[77c0456e0eb29f0c]::panicking::default_hook::{closure#1}
[INFO] [stderr]                                at /rustc/ce59db7a1b1b012fb2793c4641c1bdecad7a128b/library/std/src/panicking.rs:208:50
[INFO] [stderr]    9:     0x7f956c593ce1 - std[77c0456e0eb29f0c]::panicking::default_hook
[INFO] [stderr]                                at /rustc/ce59db7a1b1b012fb2793c4641c1bdecad7a128b/library/std/src/panicking.rs:225:9
[INFO] [stderr]   10:     0x7f956cd49afd - rustc_driver[483abbcf9e72e7cf]::report_ice
[INFO] [stderr]   11:     0x7f956c594a16 - std[77c0456e0eb29f0c]::panicking::rust_panic_with_hook
[INFO] [stderr]                                at /rustc/ce59db7a1b1b012fb2793c4641c1bdecad7a128b/library/std/src/panicking.rs:626:17
[INFO] [stderr]   12:     0x7f956dd0b34b - std[77c0456e0eb29f0c]::panicking::begin_panic::<rustc_errors[a6601eba5631ab8e]::ExplicitBug>::{closure#0}
[INFO] [stderr]   13:     0x7f956dd0b296 - std[77c0456e0eb29f0c]::sys_common::backtrace::__rust_end_short_backtrace::<std[77c0456e0eb29f0c]::panicking::begin_panic<rustc_errors[a6601eba5631ab8e]::ExplicitBug>::{closure#0}, !>
[INFO] [stderr]   14:     0x7f956dd0c61f - std[77c0456e0eb29f0c]::panicking::begin_panic::<rustc_errors[a6601eba5631ab8e]::ExplicitBug>
[INFO] [stderr]   15:     0x7f956dd2473d - std[77c0456e0eb29f0c]::panic::panic_any::<rustc_errors[a6601eba5631ab8e]::ExplicitBug>
[INFO] [stderr]   16:     0x7f956dd275da - <rustc_errors[a6601eba5631ab8e]::HandlerInner>::bug
[INFO] [stderr]   17:     0x7f956dd27080 - <rustc_errors[a6601eba5631ab8e]::Handler>::bug
[INFO] [stderr]   18:     0x7f956dc61450 - rustc_middle[4cd8eb4e66530e50]::ty::context::tls::with_opt::<rustc_middle[4cd8eb4e66530e50]::util::bug::opt_span_bug_fmt<rustc_span[41f5d8395d191526]::span_encoding::Span>::{closure#0}, ()>
[INFO] [stderr]   19:     0x7f956dc66500 - rustc_middle[4cd8eb4e66530e50]::util::bug::opt_span_bug_fmt::<rustc_span[41f5d8395d191526]::span_encoding::Span>
[INFO] [stderr]   20:     0x7f956dc66476 - rustc_middle[4cd8eb4e66530e50]::util::bug::bug_fmt
[INFO] [stderr]   21:     0x7f956ee90957 - <rustc_symbol_mangling[e3ac7cad7aae7613]::v0::SymbolMangler as rustc_middle[4cd8eb4e66530e50]::ty::print::Printer>::print_const
[INFO] [stderr]   22:     0x7f956e46af79 - <rustc_symbol_mangling[e3ac7cad7aae7613]::v0::SymbolMangler as rustc_middle[4cd8eb4e66530e50]::ty::print::Printer>::print_def_path
[INFO] [stderr]   23:     0x7f956e46ecd2 - <rustc_symbol_mangling[e3ac7cad7aae7613]::v0::SymbolMangler as rustc_middle[4cd8eb4e66530e50]::ty::print::Printer>::print_type
[INFO] [stderr]   24:     0x7f956e46dd5a - <rustc_symbol_mangling[e3ac7cad7aae7613]::v0::SymbolMangler as rustc_middle[4cd8eb4e66530e50]::ty::print::Printer>::print_impl_path
[INFO] [stderr]   25:     0x7f956e46922b - <rustc_symbol_mangling[e3ac7cad7aae7613]::v0::SymbolMangler as rustc_middle[4cd8eb4e66530e50]::ty::print::Printer>::print_def_path
[INFO] [stderr]   26:     0x7f956e468644 - <rustc_symbol_mangling[e3ac7cad7aae7613]::v0::SymbolMangler as rustc_middle[4cd8eb4e66530e50]::ty::print::Printer>::print_def_path
[INFO] [stderr]   27:     0x7f956e4671ac - rustc_symbol_mangling[e3ac7cad7aae7613]::v0::mangle
[INFO] [stderr]   28:     0x7f956e473fba - rustc_symbol_mangling[e3ac7cad7aae7613]::symbol_name_provider
[INFO] [stderr]   29:     0x7f956e140183 - <rustc_query_impl[73652419363b7eb3]::queries::symbol_name as rustc_query_system[195a98efe178d20a]::query::config::QueryAccessors<rustc_query_impl[73652419363b7eb3]::plumbing::QueryCtxt>>::compute
[INFO] [stderr]   30:     0x7f956e187766 - <rustc_query_system[195a98efe178d20a]::dep_graph::graph::DepGraph<rustc_middle[4cd8eb4e66530e50]::dep_graph::dep_node::DepKind>>::with_task_impl::<rustc_query_impl[73652419363b7eb3]::plumbing::QueryCtxt, rustc_middle[4cd8eb4e66530e50]::ty::instance::Instance, rustc_middle[4cd8eb4e66530e50]::ty::SymbolName, for<'a, 'b> fn(&'a mut rustc_middle[4cd8eb4e66530e50]::ich::hcx::StableHashingContext, &'b rustc_middle[4cd8eb4e66530e50]::ty::SymbolName) -> core[ee1ca6415511a9c4]::option::Option<rustc_data_structures[52e6d6087bd5b52c]::fingerprint::Fingerprint>>
[INFO] [stderr]   31:     0x7f956e1939af - rustc_data_structures[52e6d6087bd5b52c]::stack::ensure_sufficient_stack::<(rustc_middle[4cd8eb4e66530e50]::ty::SymbolName, rustc_query_system[195a98efe178d20a]::dep_graph::graph::DepNodeIndex), rustc_query_system[195a98efe178d20a]::query::plumbing::force_query_with_job<rustc_query_system[195a98efe178d20a]::query::caches::DefaultCache<rustc_middle[4cd8eb4e66530e50]::ty::instance::Instance, rustc_middle[4cd8eb4e66530e50]::ty::SymbolName>, rustc_query_impl[73652419363b7eb3]::plumbing::QueryCtxt>::{closure#0}::{closure#0}>
[INFO] [stderr]   32:     0x7f956e12dd3d - rustc_query_system[195a98efe178d20a]::query::plumbing::force_query_with_job::<rustc_query_system[195a98efe178d20a]::query::caches::DefaultCache<rustc_middle[4cd8eb4e66530e50]::ty::instance::Instance, rustc_middle[4cd8eb4e66530e50]::ty::SymbolName>, rustc_query_impl[73652419363b7eb3]::plumbing::QueryCtxt>
[INFO] [stderr]   33:     0x7f956e11b6f8 - rustc_query_system[195a98efe178d20a]::query::plumbing::get_query_impl::<rustc_query_impl[73652419363b7eb3]::plumbing::QueryCtxt, rustc_query_system[195a98efe178d20a]::query::caches::DefaultCache<rustc_middle[4cd8eb4e66530e50]::ty::instance::Instance, rustc_middle[4cd8eb4e66530e50]::ty::SymbolName>>
[INFO] [stderr]   34:     0x7f956e16fa13 - <rustc_query_impl[73652419363b7eb3]::Queries as rustc_middle[4cd8eb4e66530e50]::ty::query::QueryEngine>::symbol_name
[INFO] [stderr]   35:     0x7f956e766ea7 - <rustc_middle[4cd8eb4e66530e50]::mir::mono::MonoItem>::symbol_name
[INFO] [stderr]   36:     0x7f956e2b0197 - <alloc[cda43b294bbfc5d0]::vec::Vec<(&rustc_middle[4cd8eb4e66530e50]::mir::mono::MonoItem, rustc_middle[4cd8eb4e66530e50]::ty::SymbolName)> as alloc[cda43b294bbfc5d0]::vec::spec_from_iter::SpecFromIter<(&rustc_middle[4cd8eb4e66530e50]::mir::mono::MonoItem, rustc_middle[4cd8eb4e66530e50]::ty::SymbolName), core[ee1ca6415511a9c4]::iter::adapters::map::Map<std[77c0456e0eb29f0c]::collections::hash::set::Iter<rustc_middle[4cd8eb4e66530e50]::mir::mono::MonoItem>, rustc_mir[cd7939ebf13d5829]::monomorphize::partitioning::assert_symbols_are_distinct<std[77c0456e0eb29f0c]::collections::hash::set::Iter<rustc_middle[4cd8eb4e66530e50]::mir::mono::MonoItem>>::{closure#0}>>>::from_iter
[INFO] [stderr]   37:     0x7f956e44acbf - rustc_mir[cd7939ebf13d5829]::monomorphize::partitioning::assert_symbols_are_distinct::<std[77c0456e0eb29f0c]::collections::hash::set::Iter<rustc_middle[4cd8eb4e66530e50]::mir::mono::MonoItem>>
[INFO] [stderr]   38:     0x7f956edf418d - rustc_data_structures[52e6d6087bd5b52c]::sync::join::<rustc_mir[cd7939ebf13d5829]::monomorphize::partitioning::collect_and_partition_mono_items::{closure#0}::{closure#0}, rustc_mir[cd7939ebf13d5829]::monomorphize::partitioning::collect_and_partition_mono_items::{closure#0}::{closure#1}, &[rustc_middle[4cd8eb4e66530e50]::mir::mono::CodegenUnit], ()>
[INFO] [stderr]   39:     0x7f956e44b138 - rustc_mir[cd7939ebf13d5829]::monomorphize::partitioning::collect_and_partition_mono_items
[INFO] [stderr]   40:     0x7f956ec519fd - <rustc_query_impl[73652419363b7eb3]::queries::collect_and_partition_mono_items as rustc_query_system[195a98efe178d20a]::query::config::QueryAccessors<rustc_query_impl[73652419363b7eb3]::plumbing::QueryCtxt>>::compute
[INFO] [stderr]   41:     0x7f956ecd024c - <rustc_query_system[195a98efe178d20a]::dep_graph::graph::DepGraph<rustc_middle[4cd8eb4e66530e50]::dep_graph::dep_node::DepKind>>::with_task_impl::<rustc_query_impl[73652419363b7eb3]::plumbing::QueryCtxt, (), (&std[77c0456e0eb29f0c]::collections::hash::set::HashSet<rustc_span[41f5d8395d191526]::def_id::DefId, core[ee1ca6415511a9c4]::hash::BuildHasherDefault<rustc_hash[d1fdc24063388b8c]::FxHasher>>, &[rustc_middle[4cd8eb4e66530e50]::mir::mono::CodegenUnit]), for<'a, 'b> fn(&'a mut rustc_middle[4cd8eb4e66530e50]::ich::hcx::StableHashingContext, &'b (&std[77c0456e0eb29f0c]::collections::hash::set::HashSet<rustc_span[41f5d8395d191526]::def_id::DefId, core[ee1ca6415511a9c4]::hash::BuildHasherDefault<rustc_hash[d1fdc24063388b8c]::FxHasher>>, &[rustc_middle[4cd8eb4e66530e50]::mir::mono::CodegenUnit])) -> core[ee1ca6415511a9c4]::option::Option<rustc_data_structures[52e6d6087bd5b52c]::fingerprint::Fingerprint>>
[INFO] [stderr]   42:     0x7f956eceefbe - rustc_data_structures[52e6d6087bd5b52c]::stack::ensure_sufficient_stack::<((&std[77c0456e0eb29f0c]::collections::hash::set::HashSet<rustc_span[41f5d8395d191526]::def_id::DefId, core[ee1ca6415511a9c4]::hash::BuildHasherDefault<rustc_hash[d1fdc24063388b8c]::FxHasher>>, &[rustc_middle[4cd8eb4e66530e50]::mir::mono::CodegenUnit]), rustc_query_system[195a98efe178d20a]::dep_graph::graph::DepNodeIndex), rustc_query_system[195a98efe178d20a]::query::plumbing::force_query_with_job<rustc_query_system[195a98efe178d20a]::query::caches::DefaultCache<(), (&std[77c0456e0eb29f0c]::collections::hash::set::HashSet<rustc_span[41f5d8395d191526]::def_id::DefId, core[ee1ca6415511a9c4]::hash::BuildHasherDefault<rustc_hash[d1fdc24063388b8c]::FxHasher>>, &[rustc_middle[4cd8eb4e66530e50]::mir::mono::CodegenUnit])>, rustc_query_impl[73652419363b7eb3]::plumbing::QueryCtxt>::{closure#0}::{closure#0}>
[INFO] [stderr]   43:     0x7f956ec17e6d - rustc_query_system[195a98efe178d20a]::query::plumbing::force_query_with_job::<rustc_query_system[195a98efe178d20a]::query::caches::DefaultCache<(), (&std[77c0456e0eb29f0c]::collections::hash::set::HashSet<rustc_span[41f5d8395d191526]::def_id::DefId, core[ee1ca6415511a9c4]::hash::BuildHasherDefault<rustc_hash[d1fdc24063388b8c]::FxHasher>>, &[rustc_middle[4cd8eb4e66530e50]::mir::mono::CodegenUnit])>, rustc_query_impl[73652419363b7eb3]::plumbing::QueryCtxt>
[INFO] [stderr]   44:     0x7f956ebf5717 - rustc_query_system[195a98efe178d20a]::query::plumbing::get_query_impl::<rustc_query_impl[73652419363b7eb3]::plumbing::QueryCtxt, rustc_query_system[195a98efe178d20a]::query::caches::DefaultCache<(), (&std[77c0456e0eb29f0c]::collections::hash::set::HashSet<rustc_span[41f5d8395d191526]::def_id::DefId, core[ee1ca6415511a9c4]::hash::BuildHasherDefault<rustc_hash[d1fdc24063388b8c]::FxHasher>>, &[rustc_middle[4cd8eb4e66530e50]::mir::mono::CodegenUnit])>>
[INFO] [stderr]   45:     0x7f956eca3c49 - <rustc_query_impl[73652419363b7eb3]::Queries as rustc_middle[4cd8eb4e66530e50]::ty::query::QueryEngine>::collect_and_partition_mono_items
[INFO] [stderr]   46:     0x7f956e8e79e6 - <rustc_codegen_llvm[f62e3d639b52caac]::LlvmCodegenBackend as rustc_codegen_ssa[fdf1b4b4aa8707f5]::traits::backend::CodegenBackend>::codegen_crate
[INFO] [stderr]   47:     0x7f956e87311b - <rustc_interface[2a693571f116958c]::passes::QueryContext>::enter::<<rustc_interface[2a693571f116958c]::queries::Queries>::ongoing_codegen::{closure#0}::{closure#0}, core[ee1ca6415511a9c4]::result::Result<alloc[cda43b294bbfc5d0]::boxed::Box<dyn core[ee1ca6415511a9c4]::any::Any>, rustc_errors[a6601eba5631ab8e]::ErrorReported>>
[INFO] [stderr]   48:     0x7f956e87d136 - <rustc_interface[2a693571f116958c]::queries::Queries>::ongoing_codegen
[INFO] [stderr]   49:     0x7f956e842524 - <rustc_interface[2a693571f116958c]::interface::Compiler>::enter::<rustc_driver[483abbcf9e72e7cf]::run_compiler::{closure#1}::{closure#2}, core[ee1ca6415511a9c4]::result::Result<core[ee1ca6415511a9c4]::option::Option<rustc_interface[2a693571f116958c]::queries::Linker>, rustc_errors[a6601eba5631ab8e]::ErrorReported>>
[INFO] [stderr]   50:     0x7f956e83f56c - rustc_span[41f5d8395d191526]::with_source_map::<core[ee1ca6415511a9c4]::result::Result<(), rustc_errors[a6601eba5631ab8e]::ErrorReported>, rustc_interface[2a693571f116958c]::interface::create_compiler_and_run<core[ee1ca6415511a9c4]::result::Result<(), rustc_errors[a6601eba5631ab8e]::ErrorReported>, rustc_driver[483abbcf9e72e7cf]::run_compiler::{closure#1}>::{closure#0}>
[INFO] [stderr]   51:     0x7f956e8433c8 - <scoped_tls[b98c73e0611f21d3]::ScopedKey<rustc_span[41f5d8395d191526]::SessionGlobals>>::set::<rustc_interface[2a693571f116958c]::util::setup_callbacks_and_run_in_thread_pool_with_globals<rustc_interface[2a693571f116958c]::interface::run_compiler<core[ee1ca6415511a9c4]::result::Result<(), rustc_errors[a6601eba5631ab8e]::ErrorReported>, rustc_driver[483abbcf9e72e7cf]::run_compiler::{closure#1}>::{closure#0}, core[ee1ca6415511a9c4]::result::Result<(), rustc_errors[a6601eba5631ab8e]::ErrorReported>>::{closure#0}::{closure#0}, core[ee1ca6415511a9c4]::result::Result<(), rustc_errors[a6601eba5631ab8e]::ErrorReported>>
[INFO] [stderr]   52:     0x7f956e866eab - std[77c0456e0eb29f0c]::sys_common::backtrace::__rust_begin_short_backtrace::<rustc_interface[2a693571f116958c]::util::scoped_thread<rustc_interface[2a693571f116958c]::util::setup_callbacks_and_run_in_thread_pool_with_globals<rustc_interface[2a693571f116958c]::interface::run_compiler<core[ee1ca6415511a9c4]::result::Result<(), rustc_errors[a6601eba5631ab8e]::ErrorReported>, rustc_driver[483abbcf9e72e7cf]::run_compiler::{closure#1}>::{closure#0}, core[ee1ca6415511a9c4]::result::Result<(), rustc_errors[a6601eba5631ab8e]::ErrorReported>>::{closure#0}, core[ee1ca6415511a9c4]::result::Result<(), rustc_errors[a6601eba5631ab8e]::ErrorReported>>::{closure#0}, ()>
[INFO] [stderr]   53:     0x7f956e83df35 - <<std[77c0456e0eb29f0c]::thread::Builder>::spawn_unchecked<rustc_interface[2a693571f116958c]::util::scoped_thread<rustc_interface[2a693571f116958c]::util::setup_callbacks_and_run_in_thread_pool_with_globals<rustc_interface[2a693571f116958c]::interface::run_compiler<core[ee1ca6415511a9c4]::result::Result<(), rustc_errors[a6601eba5631ab8e]::ErrorReported>, rustc_driver[483abbcf9e72e7cf]::run_compiler::{closure#1}>::{closure#0}, core[ee1ca6415511a9c4]::result::Result<(), rustc_errors[a6601eba5631ab8e]::ErrorReported>>::{closure#0}, core[ee1ca6415511a9c4]::result::Result<(), rustc_errors[a6601eba5631ab8e]::ErrorReported>>::{closure#0}, ()>::{closure#0} as core[ee1ca6415511a9c4]::ops::function::FnOnce<()>>::call_once::{shim:vtable#0}
[INFO] [stderr]   54:     0x7f956c5a0f47 - <alloc[cda43b294bbfc5d0]::boxed::Box<dyn core[ee1ca6415511a9c4]::ops::function::FnOnce<(), Output = ()>> as core[ee1ca6415511a9c4]::ops::function::FnOnce<()>>::call_once
[INFO] [stderr]                                at /rustc/ce59db7a1b1b012fb2793c4641c1bdecad7a128b/library/alloc/src/boxed.rs:1575:9
[INFO] [stderr]   55:     0x7f956c5a0f47 - <alloc[cda43b294bbfc5d0]::boxed::Box<alloc[cda43b294bbfc5d0]::boxed::Box<dyn core[ee1ca6415511a9c4]::ops::function::FnOnce<(), Output = ()>>> as core[ee1ca6415511a9c4]::ops::function::FnOnce<()>>::call_once
[INFO] [stderr]                                at /rustc/ce59db7a1b1b012fb2793c4641c1bdecad7a128b/library/alloc/src/boxed.rs:1575:9
[INFO] [stderr]   56:     0x7f956c5a0f47 - <std[77c0456e0eb29f0c]::sys::unix::thread::Thread>::new::thread_start
[INFO] [stderr]                                at /rustc/ce59db7a1b1b012fb2793c4641c1bdecad7a128b/library/std/src/sys/unix/thread.rs:71:17
[INFO] [stderr]   57:     0x7f956c4c1609 - start_thread
[INFO] [stderr]   58:     0x7f956c3d5293 - clone
[INFO] [stderr]   59:                0x0 - <unknown>
[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/issues/new?labels=C-bug%2C+I-ICE%2C+T-compiler&template=ice.md
[INFO] [stderr] 
[INFO] [stderr] note: rustc 1.54.0-nightly (ce59db7a1 2021-05-20) running on x86_64-unknown-linux-gnu
[INFO] [stderr] 
[INFO] [stderr] note: compiler flags: -C embed-bitcode=no -C debuginfo=2 --crate-type cdylib
[INFO] [stderr] 
[INFO] [stderr] note: some of the compiler flags provided by cargo are hidden
[INFO] [stderr] 
[INFO] [stderr] query stack during panic:
[INFO] [stderr] #0 [symbol_name] computing the symbol for `<impl at src/lib.rs:30:1: 40:2>::to_norm`
[INFO] [stderr] #1 [collect_and_partition_mono_items] collect_and_partition_mono_items
[INFO] [stderr] end of query stack
[INFO] [stdout] error: aborting due to previous error; 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `snapshot_repeat`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "82d0f1c6fff08b9a60b5ec6dead9262e9623f199cb4f09c3bb315051446af5e1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "82d0f1c6fff08b9a60b5ec6dead9262e9623f199cb4f09c3bb315051446af5e1", kill_on_drop: false }`
[INFO] [stdout] 82d0f1c6fff08b9a60b5ec6dead9262e9623f199cb4f09c3bb315051446af5e1