[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#2b00690a2a9987274f9d399383a581d5df1bf5df for pr-85530-1
[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 2b00690a2a9987274f9d399383a581d5df1bf5df
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+2b00690a2a9987274f9d399383a581d5df1bf5df" "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" "+2b00690a2a9987274f9d399383a581d5df1bf5df" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating git repository `https://github.com/RustAudio/vst-rs`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+2b00690a2a9987274f9d399383a581d5df1bf5df" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4bafccb6e1ec4e10e775fe1630ac4459334dcc2881e5b69ab0f88c4afa6fd7ce
[INFO] running `Command { std: "docker" "start" "-a" "4bafccb6e1ec4e10e775fe1630ac4459334dcc2881e5b69ab0f88c4afa6fd7ce", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4bafccb6e1ec4e10e775fe1630ac4459334dcc2881e5b69ab0f88c4afa6fd7ce", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4bafccb6e1ec4e10e775fe1630ac4459334dcc2881e5b69ab0f88c4afa6fd7ce", kill_on_drop: false }`
[INFO] [stdout] 4bafccb6e1ec4e10e775fe1630ac4459334dcc2881e5b69ab0f88c4afa6fd7ce
[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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+2b00690a2a9987274f9d399383a581d5df1bf5df" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6368fae5ebd2097881123af9f07726bfcfe99721a8f2d01bb3b41e2b14d70a36
[INFO] running `Command { std: "docker" "start" "-a" "6368fae5ebd2097881123af9f07726bfcfe99721a8f2d01bb3b41e2b14d70a36", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling cc v1.0.66
[INFO] [stderr]    Compiling log v0.4.11
[INFO] [stderr]    Compiling libc v0.2.81
[INFO] [stderr]    Compiling bitflags v1.2.1
[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] [stdout] error: internal compiler error: compiler/rustc_symbol_mangling/src/v0.rs:693:17: symbol_names: unsupported constant of type `f32` (Const { ty: f32, val: Value(Scalar(0x3f800000)) })
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] thread 'rustc' panicked at 'Box<dyn Any>', compiler/rustc_errors/src/lib.rs:1034:9
[INFO] [stderr] stack backtrace:
[INFO] [stderr]    0:     0x7f5ae4673f80 - std[99f370aaccf18385]::backtrace_rs::backtrace::libunwind::trace
[INFO] [stderr]                                at /rustc/2b00690a2a9987274f9d399383a581d5df1bf5df/library/std/src/../../backtrace/src/backtrace/libunwind.rs:90:5
[INFO] [stderr]    1:     0x7f5ae4673f80 - std[99f370aaccf18385]::backtrace_rs::backtrace::trace_unsynchronized::<std[99f370aaccf18385]::sys_common::backtrace::_print_fmt::{closure#1}>
[INFO] [stderr]                                at /rustc/2b00690a2a9987274f9d399383a581d5df1bf5df/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
[INFO] [stderr]    2:     0x7f5ae4673f80 - std[99f370aaccf18385]::sys_common::backtrace::_print_fmt
[INFO] [stderr]                                at /rustc/2b00690a2a9987274f9d399383a581d5df1bf5df/library/std/src/sys_common/backtrace.rs:67:5
[INFO] [stderr]    3:     0x7f5ae4673f80 - <std[99f370aaccf18385]::sys_common::backtrace::_print::DisplayBacktrace as core[734c19577ca205ef]::fmt::Display>::fmt
[INFO] [stderr]                                at /rustc/2b00690a2a9987274f9d399383a581d5df1bf5df/library/std/src/sys_common/backtrace.rs:46:22
[INFO] [stderr]    4:     0x7f5ae46e1b9c - core[734c19577ca205ef]::fmt::write
[INFO] [stderr]                                at /rustc/2b00690a2a9987274f9d399383a581d5df1bf5df/library/core/src/fmt/mod.rs:1115:17
[INFO] [stderr]    5:     0x7f5ae46657a5 - <std[99f370aaccf18385]::sys::unix::stdio::Stderr as std[99f370aaccf18385]::io::Write>::write_fmt
[INFO] [stderr]                                at /rustc/2b00690a2a9987274f9d399383a581d5df1bf5df/library/std/src/io/mod.rs:1663:15
[INFO] [stderr]    6:     0x7f5ae4677c9b - std[99f370aaccf18385]::sys_common::backtrace::_print
[INFO] [stderr]                                at /rustc/2b00690a2a9987274f9d399383a581d5df1bf5df/library/std/src/sys_common/backtrace.rs:49:5
[INFO] [stderr]    7:     0x7f5ae4677c9b - std[99f370aaccf18385]::sys_common::backtrace::print
[INFO] [stderr]                                at /rustc/2b00690a2a9987274f9d399383a581d5df1bf5df/library/std/src/sys_common/backtrace.rs:36:9
[INFO] [stderr]    8:     0x7f5ae4677c9b - std[99f370aaccf18385]::panicking::default_hook::{closure#1}
[INFO] [stderr]                                at /rustc/2b00690a2a9987274f9d399383a581d5df1bf5df/library/std/src/panicking.rs:208:50
[INFO] [stderr]    9:     0x7f5ae4677771 - std[99f370aaccf18385]::panicking::default_hook
[INFO] [stderr]                                at /rustc/2b00690a2a9987274f9d399383a581d5df1bf5df/library/std/src/panicking.rs:225:9
[INFO] [stderr]   10:     0x7f5ae4e37941 - rustc_driver[5671526f5180ced5]::DEFAULT_HOOK::{closure#0}::{closure#0}
[INFO] [stderr]   11:     0x7f5ae46784c9 - std[99f370aaccf18385]::panicking::rust_panic_with_hook
[INFO] [stderr]                                at /rustc/2b00690a2a9987274f9d399383a581d5df1bf5df/library/std/src/panicking.rs:626:17
[INFO] [stderr]   12:     0x7f5ae5e3886b - std[99f370aaccf18385]::panicking::begin_panic::<rustc_errors[a482f3bb32edea1c]::ExplicitBug>::{closure#0}
[INFO] [stderr]   13:     0x7f5ae5e37426 - std[99f370aaccf18385]::sys_common::backtrace::__rust_end_short_backtrace::<std[99f370aaccf18385]::panicking::begin_panic<rustc_errors[a482f3bb32edea1c]::ExplicitBug>::{closure#0}, !>
[INFO] [stderr]   14:     0x7f5ae5e3a58f - std[99f370aaccf18385]::panicking::begin_panic::<rustc_errors[a482f3bb32edea1c]::ExplicitBug>
[INFO] [stderr]   15:     0x7f5ae5e4fdcd - std[99f370aaccf18385]::panic::panic_any::<rustc_errors[a482f3bb32edea1c]::ExplicitBug>
[INFO] [stderr]   16:     0x7f5ae5e5221a - <rustc_errors[a482f3bb32edea1c]::HandlerInner>::bug
[INFO] [stderr]   17:     0x7f5ae5e51cd0 - <rustc_errors[a482f3bb32edea1c]::Handler>::bug
[INFO] [stderr]   18:     0x7f5ae5cbcb8c - rustc_middle[b9bf84dec9620d88]::ty::context::tls::with_opt::<rustc_middle[b9bf84dec9620d88]::util::bug::opt_span_bug_fmt<rustc_span[38c79dda682ffe0f]::span_encoding::Span>::{closure#0}, ()>
[INFO] [stderr]   19:     0x7f5ae5cbd3b0 - rustc_middle[b9bf84dec9620d88]::util::bug::opt_span_bug_fmt::<rustc_span[38c79dda682ffe0f]::span_encoding::Span>
[INFO] [stderr]   20:     0x7f5ae5cbd326 - rustc_middle[b9bf84dec9620d88]::util::bug::bug_fmt
[INFO] [stderr]   21:     0x7f5ae6f92805 - <rustc_symbol_mangling[83695b15260e6b20]::v0::SymbolMangler as rustc_middle[b9bf84dec9620d88]::ty::print::Printer>::print_const
[INFO] [stderr]   22:     0x7f5ae6595a78 - <rustc_symbol_mangling[83695b15260e6b20]::v0::SymbolMangler as rustc_middle[b9bf84dec9620d88]::ty::print::Printer>::print_def_path
[INFO] [stderr]   23:     0x7f5ae6597bd2 - <rustc_symbol_mangling[83695b15260e6b20]::v0::SymbolMangler as rustc_middle[b9bf84dec9620d88]::ty::print::Printer>::print_type
[INFO] [stderr]   24:     0x7f5ae6596cb8 - <rustc_symbol_mangling[83695b15260e6b20]::v0::SymbolMangler as rustc_middle[b9bf84dec9620d88]::ty::print::Printer>::print_impl_path
[INFO] [stderr]   25:     0x7f5ae65950ee - <rustc_symbol_mangling[83695b15260e6b20]::v0::SymbolMangler as rustc_middle[b9bf84dec9620d88]::ty::print::Printer>::print_def_path
[INFO] [stderr]   26:     0x7f5ae65944bb - <rustc_symbol_mangling[83695b15260e6b20]::v0::SymbolMangler as rustc_middle[b9bf84dec9620d88]::ty::print::Printer>::print_def_path
[INFO] [stderr]   27:     0x7f5ae6593193 - rustc_symbol_mangling[83695b15260e6b20]::v0::mangle
[INFO] [stderr]   28:     0x7f5ae658f1fb - rustc_symbol_mangling[83695b15260e6b20]::symbol_name_provider
[INFO] [stderr]   29:     0x7f5ae6260632 - rustc_query_system[854fc9da8b07d811]::query::plumbing::get_query_impl::<rustc_query_impl[5e540dc4871d82af]::plumbing::QueryCtxt, rustc_query_system[854fc9da8b07d811]::query::caches::DefaultCache<rustc_middle[b9bf84dec9620d88]::ty::instance::Instance, rustc_middle[b9bf84dec9620d88]::ty::SymbolName>>
[INFO] [stderr]   30:     0x7f5ae629ef03 - <rustc_query_impl[5e540dc4871d82af]::Queries as rustc_middle[b9bf84dec9620d88]::ty::query::QueryEngine>::symbol_name
[INFO] [stderr]   31:     0x7f5ae68866a8 - <rustc_middle[b9bf84dec9620d88]::mir::mono::MonoItem>::symbol_name
[INFO] [stderr]   32:     0x7f5ae648f577 - <alloc[b0b3eefb83af734]::vec::Vec<(&rustc_middle[b9bf84dec9620d88]::mir::mono::MonoItem, rustc_middle[b9bf84dec9620d88]::ty::SymbolName)> as alloc[b0b3eefb83af734]::vec::spec_from_iter::SpecFromIter<(&rustc_middle[b9bf84dec9620d88]::mir::mono::MonoItem, rustc_middle[b9bf84dec9620d88]::ty::SymbolName), core[734c19577ca205ef]::iter::adapters::map::Map<std[99f370aaccf18385]::collections::hash::set::Iter<rustc_middle[b9bf84dec9620d88]::mir::mono::MonoItem>, rustc_mir[20ad229b4e3cabe2]::monomorphize::partitioning::assert_symbols_are_distinct<std[99f370aaccf18385]::collections::hash::set::Iter<rustc_middle[b9bf84dec9620d88]::mir::mono::MonoItem>>::{closure#0}>>>::from_iter
[INFO] [stderr]   33:     0x7f5ae644ab7f - rustc_mir[20ad229b4e3cabe2]::monomorphize::partitioning::assert_symbols_are_distinct::<std[99f370aaccf18385]::collections::hash::set::Iter<rustc_middle[b9bf84dec9620d88]::mir::mono::MonoItem>>
[INFO] [stderr]   34:     0x7f5ae6ef49dd - rustc_data_structures[76857421ea2e6ac4]::sync::join::<rustc_mir[20ad229b4e3cabe2]::monomorphize::partitioning::collect_and_partition_mono_items::{closure#0}::{closure#0}, rustc_mir[20ad229b4e3cabe2]::monomorphize::partitioning::collect_and_partition_mono_items::{closure#0}::{closure#1}, &[rustc_middle[b9bf84dec9620d88]::mir::mono::CodegenUnit], ()>
[INFO] [stderr]   35:     0x7f5ae644afed - rustc_mir[20ad229b4e3cabe2]::monomorphize::partitioning::collect_and_partition_mono_items
[INFO] [stderr]   36:     0x7f5ae6cf25f6 - rustc_query_system[854fc9da8b07d811]::query::plumbing::get_query_impl::<rustc_query_impl[5e540dc4871d82af]::plumbing::QueryCtxt, rustc_query_system[854fc9da8b07d811]::query::caches::DefaultCache<(), (&std[99f370aaccf18385]::collections::hash::set::HashSet<rustc_span[38c79dda682ffe0f]::def_id::DefId, core[734c19577ca205ef]::hash::BuildHasherDefault<rustc_hash[94d7ba29e57eb28a]::FxHasher>>, &[rustc_middle[b9bf84dec9620d88]::mir::mono::CodegenUnit])>>
[INFO] [stderr]   37:     0x7f5ae6d7e8f6 - <rustc_query_impl[5e540dc4871d82af]::Queries as rustc_middle[b9bf84dec9620d88]::ty::query::QueryEngine>::collect_and_partition_mono_items
[INFO] [stderr]   38:     0x7f5ae69f46f6 - <rustc_codegen_llvm[b578f615c719515c]::LlvmCodegenBackend as rustc_codegen_ssa[291ccf6921b9458f]::traits::backend::CodegenBackend>::codegen_crate
[INFO] [stderr]   39:     0x7f5ae697738c - <rustc_interface[bcff07df0cbdabc8]::passes::QueryContext>::enter::<<rustc_interface[bcff07df0cbdabc8]::queries::Queries>::ongoing_codegen::{closure#0}::{closure#0}, core[734c19577ca205ef]::result::Result<alloc[b0b3eefb83af734]::boxed::Box<dyn core[734c19577ca205ef]::any::Any>, rustc_errors[a482f3bb32edea1c]::ErrorReported>>
[INFO] [stderr]   40:     0x7f5ae696f236 - <rustc_interface[bcff07df0cbdabc8]::queries::Queries>::ongoing_codegen
[INFO] [stderr]   41:     0x7f5ae694e0bf - <rustc_interface[bcff07df0cbdabc8]::interface::Compiler>::enter::<rustc_driver[5671526f5180ced5]::run_compiler::{closure#1}::{closure#2}, core[734c19577ca205ef]::result::Result<core[734c19577ca205ef]::option::Option<rustc_interface[bcff07df0cbdabc8]::queries::Linker>, rustc_errors[a482f3bb32edea1c]::ErrorReported>>
[INFO] [stderr]   42:     0x7f5ae693cdbc - rustc_span[38c79dda682ffe0f]::with_source_map::<core[734c19577ca205ef]::result::Result<(), rustc_errors[a482f3bb32edea1c]::ErrorReported>, rustc_interface[bcff07df0cbdabc8]::interface::create_compiler_and_run<core[734c19577ca205ef]::result::Result<(), rustc_errors[a482f3bb32edea1c]::ErrorReported>, rustc_driver[5671526f5180ced5]::run_compiler::{closure#1}>::{closure#0}>
[INFO] [stderr]   43:     0x7f5ae6964a6a - rustc_interface[bcff07df0cbdabc8]::interface::create_compiler_and_run::<core[734c19577ca205ef]::result::Result<(), rustc_errors[a482f3bb32edea1c]::ErrorReported>, rustc_driver[5671526f5180ced5]::run_compiler::{closure#1}>
[INFO] [stderr]   44:     0x7f5ae6942039 - <scoped_tls[3a41243a278112c]::ScopedKey<rustc_span[38c79dda682ffe0f]::SessionGlobals>>::set::<rustc_interface[bcff07df0cbdabc8]::util::setup_callbacks_and_run_in_thread_pool_with_globals<rustc_interface[bcff07df0cbdabc8]::interface::run_compiler<core[734c19577ca205ef]::result::Result<(), rustc_errors[a482f3bb32edea1c]::ErrorReported>, rustc_driver[5671526f5180ced5]::run_compiler::{closure#1}>::{closure#0}, core[734c19577ca205ef]::result::Result<(), rustc_errors[a482f3bb32edea1c]::ErrorReported>>::{closure#0}::{closure#0}, core[734c19577ca205ef]::result::Result<(), rustc_errors[a482f3bb32edea1c]::ErrorReported>>
[INFO] [stderr]   45:     0x7f5ae6941b0b - std[99f370aaccf18385]::sys_common::backtrace::__rust_begin_short_backtrace::<rustc_interface[bcff07df0cbdabc8]::util::scoped_thread<rustc_interface[bcff07df0cbdabc8]::util::setup_callbacks_and_run_in_thread_pool_with_globals<rustc_interface[bcff07df0cbdabc8]::interface::run_compiler<core[734c19577ca205ef]::result::Result<(), rustc_errors[a482f3bb32edea1c]::ErrorReported>, rustc_driver[5671526f5180ced5]::run_compiler::{closure#1}>::{closure#0}, core[734c19577ca205ef]::result::Result<(), rustc_errors[a482f3bb32edea1c]::ErrorReported>>::{closure#0}, core[734c19577ca205ef]::result::Result<(), rustc_errors[a482f3bb32edea1c]::ErrorReported>>::{closure#0}, ()>
[INFO] [stderr]   46:     0x7f5ae693db45 - <<std[99f370aaccf18385]::thread::Builder>::spawn_unchecked<rustc_interface[bcff07df0cbdabc8]::util::scoped_thread<rustc_interface[bcff07df0cbdabc8]::util::setup_callbacks_and_run_in_thread_pool_with_globals<rustc_interface[bcff07df0cbdabc8]::interface::run_compiler<core[734c19577ca205ef]::result::Result<(), rustc_errors[a482f3bb32edea1c]::ErrorReported>, rustc_driver[5671526f5180ced5]::run_compiler::{closure#1}>::{closure#0}, core[734c19577ca205ef]::result::Result<(), rustc_errors[a482f3bb32edea1c]::ErrorReported>>::{closure#0}, core[734c19577ca205ef]::result::Result<(), rustc_errors[a482f3bb32edea1c]::ErrorReported>>::{closure#0}, ()>::{closure#0} as core[734c19577ca205ef]::ops::function::FnOnce<()>>::call_once::{shim:vtable#0}
[INFO] [stderr]   47:     0x7f5ae4684ab7 - <alloc[b0b3eefb83af734]::boxed::Box<dyn core[734c19577ca205ef]::ops::function::FnOnce<(), Output = ()>> as core[734c19577ca205ef]::ops::function::FnOnce<()>>::call_once
[INFO] [stderr]                                at /rustc/2b00690a2a9987274f9d399383a581d5df1bf5df/library/alloc/src/boxed.rs:1572:9
[INFO] [stderr]   48:     0x7f5ae4684ab7 - <alloc[b0b3eefb83af734]::boxed::Box<alloc[b0b3eefb83af734]::boxed::Box<dyn core[734c19577ca205ef]::ops::function::FnOnce<(), Output = ()>>> as core[734c19577ca205ef]::ops::function::FnOnce<()>>::call_once
[INFO] [stderr]                                at /rustc/2b00690a2a9987274f9d399383a581d5df1bf5df/library/alloc/src/boxed.rs:1572:9
[INFO] [stderr]   49:     0x7f5ae4684ab7 - <std[99f370aaccf18385]::sys::unix::thread::Thread>::new::thread_start
[INFO] [stderr]                                at /rustc/2b00690a2a9987274f9d399383a581d5df1bf5df/library/std/src/sys/unix/thread.rs:74:17
[INFO] [stderr]   50:     0x7f5ae45a4609 - start_thread
[INFO] [stderr]   51:     0x7f5ae44b8293 - clone
[INFO] [stderr]   52:                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 1.55.0-nightly (2b00690a2 2021-07-18) 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_scaled`
[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` due to previous error; 1 warning emitted
[INFO] running `Command { std: "docker" "inspect" "6368fae5ebd2097881123af9f07726bfcfe99721a8f2d01bb3b41e2b14d70a36", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6368fae5ebd2097881123af9f07726bfcfe99721a8f2d01bb3b41e2b14d70a36", kill_on_drop: false }`
[INFO] [stdout] 6368fae5ebd2097881123af9f07726bfcfe99721a8f2d01bb3b41e2b14d70a36