Build results for nightly-2023-05-17 target arm64_32-apple-watchos core
error
Compiling compiler_builtins v0.1.91
Compiling core v0.0.0 (/var/lib/does-it-build/.rustup/toolchains/nightly-2023-05-17-x86_64-unknown-linux-gnu/lib/rustlib/src/rust/library/core)
Compiling rustc-std-workspace-core v1.99.0 (/var/lib/does-it-build/.rustup/toolchains/nightly-2023-05-17-x86_64-unknown-linux-gnu/lib/rustlib/src/rust/library/rustc-std-workspace-core)
thread 'rustc' panicked at 'called `Result::unwrap()` on an `Err` value: Error("unimplemented architecture Aarch64_Ilp32")', compiler/rustc_codegen_ssa/src/back/metadata.rs:340:19
stack backtrace:
0: 0x7f2f0e11b6e1 - std::backtrace_rs::backtrace::libunwind::trace::h61ab8beb00634b74
at /rustc/e77366b57b799dfa3ce1fcb850c068723a3213ee/library/std/src/../../backtrace/src/backtrace/libunwind.rs:93:5
1: 0x7f2f0e11b6e1 - std::backtrace_rs::backtrace::trace_unsynchronized::h6b86b62159b762e9
at /rustc/e77366b57b799dfa3ce1fcb850c068723a3213ee/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
2: 0x7f2f0e11b6e1 - std::sys_common::backtrace::_print_fmt::h0ad7250d698f0715
at /rustc/e77366b57b799dfa3ce1fcb850c068723a3213ee/library/std/src/sys_common/backtrace.rs:65:5
3: 0x7f2f0e11b6e1 - ::fmt::h80c066c3055704df
at /rustc/e77366b57b799dfa3ce1fcb850c068723a3213ee/library/std/src/sys_common/backtrace.rs:44:22
4: 0x7f2f0e17bbdf - core::fmt::rt::Argument::fmt::h5e75ab5b01d12a26
at /rustc/e77366b57b799dfa3ce1fcb850c068723a3213ee/library/core/src/fmt/rt.rs:138:9
5: 0x7f2f0e17bbdf - core::fmt::write::h64b293fbdd962a5f
at /rustc/e77366b57b799dfa3ce1fcb850c068723a3213ee/library/core/src/fmt/mod.rs:1094:21
6: 0x7f2f0e10e9e1 - std::io::Write::write_fmt::he8ce86014df7242c
at /rustc/e77366b57b799dfa3ce1fcb850c068723a3213ee/library/std/src/io/mod.rs:1712:15
7: 0x7f2f0e11b4f5 - std::sys_common::backtrace::_print::h7f3e6c9f83fe08f9
at /rustc/e77366b57b799dfa3ce1fcb850c068723a3213ee/library/std/src/sys_common/backtrace.rs:47:5
8: 0x7f2f0e11b4f5 - std::sys_common::backtrace::print::h83582a5faf2b1e70
at /rustc/e77366b57b799dfa3ce1fcb850c068723a3213ee/library/std/src/sys_common/backtrace.rs:34:9
9: 0x7f2f0e11e177 - std::panicking::default_hook::{{closure}}::hfd7df5ef529b74a0
10: 0x7f2f0e11df64 - std::panicking::default_hook::hadbe6697b055bf56
at /rustc/e77366b57b799dfa3ce1fcb850c068723a3213ee/library/std/src/panicking.rs:288:9
11: 0x7f2f112f23cb - >::call_once::{shim:vtable#0}
12: 0x7f2f0e11e897 - as core::ops::function::Fn>::call::h1bd3edffd5c9f66e
at /rustc/e77366b57b799dfa3ce1fcb850c068723a3213ee/library/alloc/src/boxed.rs:1999:9
13: 0x7f2f0e11e897 - std::panicking::rust_panic_with_hook::hf8d00dde99df213d
at /rustc/e77366b57b799dfa3ce1fcb850c068723a3213ee/library/std/src/panicking.rs:695:13
14: 0x7f2f0e11e617 - std::panicking::begin_panic_handler::{{closure}}::h91d0d755bd2eb933
at /rustc/e77366b57b799dfa3ce1fcb850c068723a3213ee/library/std/src/panicking.rs:582:13
15: 0x7f2f0e11bb26 - std::sys_common::backtrace::__rust_end_short_backtrace::h5466d383b2b8fca8
at /rustc/e77366b57b799dfa3ce1fcb850c068723a3213ee/library/std/src/sys_common/backtrace.rs:150:18
16: 0x7f2f0e11e382 - rust_begin_unwind
at /rustc/e77366b57b799dfa3ce1fcb850c068723a3213ee/library/std/src/panicking.rs:578:5
17: 0x7f2f0e177e63 - core::panicking::panic_fmt::hc56187f6683426f1
at /rustc/e77366b57b799dfa3ce1fcb850c068723a3213ee/library/core/src/panicking.rs:67:14
18: 0x7f2f0e178483 - core::result::unwrap_failed::hcde4272aea1316d5
at /rustc/e77366b57b799dfa3ce1fcb850c068723a3213ee/library/core/src/result.rs:1651:5
19: 0x7f2f10a0133d - rustc_codegen_ssa[5e5bf152454e402c]::back::metadata::create_wrapper_file
20: 0x7f2f109ffa4c - rustc_codegen_ssa[5e5bf152454e402c]::back::link::link_rlib
21: 0x7f2f109fc712 - rustc_codegen_ssa[5e5bf152454e402c]::back::link::link_binary
22: 0x7f2f109fb184 - ::link
23: 0x7f2f1088e092 - ::link
24: 0x7f2f1087abe7 - rustc_span[ff0760e36ce007e]::set_source_map::, rustc_interface[612572f9f002b03e]::interface::run_compiler, rustc_driver_impl[f38f2d3ffb75e5ff]::run_compiler::{closure#1}>::{closure#0}::{closure#0}>
25: 0x7f2f1087a69e - >::set::, rustc_driver_impl[f38f2d3ffb75e5ff]::run_compiler::{closure#1}>::{closure#0}, core[6e0682c695a44ff2]::result::Result<(), rustc_span[ff0760e36ce007e]::ErrorGuaranteed>>
26: 0x7f2f10879c76 - std[be949fbdb9eff060]::sys_common::backtrace::__rust_begin_short_backtrace::, rustc_driver_impl[f38f2d3ffb75e5ff]::run_compiler::{closure#1}>::{closure#0}, core[6e0682c695a44ff2]::result::Result<(), rustc_span[ff0760e36ce007e]::ErrorGuaranteed>>::{closure#0}::{closure#0}, core[6e0682c695a44ff2]::result::Result<(), rustc_span[ff0760e36ce007e]::ErrorGuaranteed>>
27: 0x7f2f10879a25 - <::spawn_unchecked_, rustc_driver_impl[f38f2d3ffb75e5ff]::run_compiler::{closure#1}>::{closure#0}, core[6e0682c695a44ff2]::result::Result<(), rustc_span[ff0760e36ce007e]::ErrorGuaranteed>>::{closure#0}::{closure#0}, core[6e0682c695a44ff2]::result::Result<(), rustc_span[ff0760e36ce007e]::ErrorGuaranteed>>::{closure#1} as core[6e0682c695a44ff2]::ops::function::FnOnce<()>>::call_once::{shim:vtable#0}
28: 0x7f2f0e128d45 - as core::ops::function::FnOnce>::call_once::h300258ea9469d58c
at /rustc/e77366b57b799dfa3ce1fcb850c068723a3213ee/library/alloc/src/boxed.rs:1985:9
29: 0x7f2f0e128d45 - as core::ops::function::FnOnce>::call_once::h70f424d879172a25
at /rustc/e77366b57b799dfa3ce1fcb850c068723a3213ee/library/alloc/src/boxed.rs:1985:9
30: 0x7f2f0e128d45 - std::sys::unix::thread::Thread::new::thread_start::h9aeb8581e1fac144
at /rustc/e77366b57b799dfa3ce1fcb850c068723a3213ee/library/std/src/sys/unix/thread.rs:108:17
31: 0x7f2f0dec8272 - start_thread
32: 0x7f2f0df43dec - __GI___clone3
33: 0x0 -
error: the compiler unexpectedly panicked. this is a bug.
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
note: rustc 1.71.0-nightly (e77366b57 2023-05-16) running on x86_64-unknown-linux-gnu
note: compiler flags: --crate-type lib -C opt-level=3 -C embed-bitcode=no -Z force-unstable-if-unmarked
note: some of the compiler flags provided by cargo are hidden
query stack during panic:
end of query stack
error: could not compile `rustc-std-workspace-core` (lib)
warning: build failed, waiting for other jobs to finish...
thread 'rustc' panicked at 'called `Result::unwrap()` on an `Err` value: Error("unimplemented architecture Aarch64_Ilp32")', compiler/rustc_codegen_ssa/src/back/metadata.rs:340:19
stack backtrace:
0: 0x7fd1a671b6e1 - std::backtrace_rs::backtrace::libunwind::trace::h61ab8beb00634b74
at /rustc/e77366b57b799dfa3ce1fcb850c068723a3213ee/library/std/src/../../backtrace/src/backtrace/libunwind.rs:93:5
1: 0x7fd1a671b6e1 - std::backtrace_rs::backtrace::trace_unsynchronized::h6b86b62159b762e9
at /rustc/e77366b57b799dfa3ce1fcb850c068723a3213ee/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
2: 0x7fd1a671b6e1 - std::sys_common::backtrace::_print_fmt::h0ad7250d698f0715
at /rustc/e77366b57b799dfa3ce1fcb850c068723a3213ee/library/std/src/sys_common/backtrace.rs:65:5
3: 0x7fd1a671b6e1 - ::fmt::h80c066c3055704df
at /rustc/e77366b57b799dfa3ce1fcb850c068723a3213ee/library/std/src/sys_common/backtrace.rs:44:22
4: 0x7fd1a677bbdf - core::fmt::rt::Argument::fmt::h5e75ab5b01d12a26
at /rustc/e77366b57b799dfa3ce1fcb850c068723a3213ee/library/core/src/fmt/rt.rs:138:9
5: 0x7fd1a677bbdf - core::fmt::write::h64b293fbdd962a5f
at /rustc/e77366b57b799dfa3ce1fcb850c068723a3213ee/library/core/src/fmt/mod.rs:1094:21
6: 0x7fd1a670e9e1 - std::io::Write::write_fmt::he8ce86014df7242c
at /rustc/e77366b57b799dfa3ce1fcb850c068723a3213ee/library/std/src/io/mod.rs:1712:15
7: 0x7fd1a671b4f5 - std::sys_common::backtrace::_print::h7f3e6c9f83fe08f9
at /rustc/e77366b57b799dfa3ce1fcb850c068723a3213ee/library/std/src/sys_common/backtrace.rs:47:5
8: 0x7fd1a671b4f5 - std::sys_common::backtrace::print::h83582a5faf2b1e70
at /rustc/e77366b57b799dfa3ce1fcb850c068723a3213ee/library/std/src/sys_common/backtrace.rs:34:9
9: 0x7fd1a671e177 - std::panicking::default_hook::{{closure}}::hfd7df5ef529b74a0
10: 0x7fd1a671df64 - std::panicking::default_hook::hadbe6697b055bf56
at /rustc/e77366b57b799dfa3ce1fcb850c068723a3213ee/library/std/src/panicking.rs:288:9
11: 0x7fd1a98f23cb - >::call_once::{shim:vtable#0}
12: 0x7fd1a671e897 - as core::ops::function::Fn>::call::h1bd3edffd5c9f66e
at /rustc/e77366b57b799dfa3ce1fcb850c068723a3213ee/library/alloc/src/boxed.rs:1999:9
13: 0x7fd1a671e897 - std::panicking::rust_panic_with_hook::hf8d00dde99df213d
at /rustc/e77366b57b799dfa3ce1fcb850c068723a3213ee/library/std/src/panicking.rs:695:13
14: 0x7fd1a671e617 - std::panicking::begin_panic_handler::{{closure}}::h91d0d755bd2eb933
at /rustc/e77366b57b799dfa3ce1fcb850c068723a3213ee/library/std/src/panicking.rs:582:13
15: 0x7fd1a671bb26 - std::sys_common::backtrace::__rust_end_short_backtrace::h5466d383b2b8fca8
at /rustc/e77366b57b799dfa3ce1fcb850c068723a3213ee/library/std/src/sys_common/backtrace.rs:150:18
16: 0x7fd1a671e382 - rust_begin_unwind
at /rustc/e77366b57b799dfa3ce1fcb850c068723a3213ee/library/std/src/panicking.rs:578:5
17: 0x7fd1a6777e63 - core::panicking::panic_fmt::hc56187f6683426f1
at /rustc/e77366b57b799dfa3ce1fcb850c068723a3213ee/library/core/src/panicking.rs:67:14
18: 0x7fd1a6778483 - core::result::unwrap_failed::hcde4272aea1316d5
at /rustc/e77366b57b799dfa3ce1fcb850c068723a3213ee/library/core/src/result.rs:1651:5
19: 0x7fd1a900133d - rustc_codegen_ssa[5e5bf152454e402c]::back::metadata::create_wrapper_file
20: 0x7fd1a8fffa4c - rustc_codegen_ssa[5e5bf152454e402c]::back::link::link_rlib
21: 0x7fd1a8ffc712 - rustc_codegen_ssa[5e5bf152454e402c]::back::link::link_binary
22: 0x7fd1a8ffb184 - ::link
23: 0x7fd1a8e8e092 - ::link
24: 0x7fd1a8e7abe7 - rustc_span[ff0760e36ce007e]::set_source_map::, rustc_interface[612572f9f002b03e]::interface::run_compiler, rustc_driver_impl[f38f2d3ffb75e5ff]::run_compiler::{closure#1}>::{closure#0}::{closure#0}>
25: 0x7fd1a8e7a69e - >::set::, rustc_driver_impl[f38f2d3ffb75e5ff]::run_compiler::{closure#1}>::{closure#0}, core[6e0682c695a44ff2]::result::Result<(), rustc_span[ff0760e36ce007e]::ErrorGuaranteed>>
26: 0x7fd1a8e79c76 - std[be949fbdb9eff060]::sys_common::backtrace::__rust_begin_short_backtrace::, rustc_driver_impl[f38f2d3ffb75e5ff]::run_compiler::{closure#1}>::{closure#0}, core[6e0682c695a44ff2]::result::Result<(), rustc_span[ff0760e36ce007e]::ErrorGuaranteed>>::{closure#0}::{closure#0}, core[6e0682c695a44ff2]::result::Result<(), rustc_span[ff0760e36ce007e]::ErrorGuaranteed>>
27: 0x7fd1a8e79a25 - <::spawn_unchecked_, rustc_driver_impl[f38f2d3ffb75e5ff]::run_compiler::{closure#1}>::{closure#0}, core[6e0682c695a44ff2]::result::Result<(), rustc_span[ff0760e36ce007e]::ErrorGuaranteed>>::{closure#0}::{closure#0}, core[6e0682c695a44ff2]::result::Result<(), rustc_span[ff0760e36ce007e]::ErrorGuaranteed>>::{closure#1} as core[6e0682c695a44ff2]::ops::function::FnOnce<()>>::call_once::{shim:vtable#0}
28: 0x7fd1a6728d45 - as core::ops::function::FnOnce>::call_once::h300258ea9469d58c
at /rustc/e77366b57b799dfa3ce1fcb850c068723a3213ee/library/alloc/src/boxed.rs:1985:9
29: 0x7fd1a6728d45 - as core::ops::function::FnOnce>::call_once::h70f424d879172a25
at /rustc/e77366b57b799dfa3ce1fcb850c068723a3213ee/library/alloc/src/boxed.rs:1985:9
30: 0x7fd1a6728d45 - std::sys::unix::thread::Thread::new::thread_start::h9aeb8581e1fac144
at /rustc/e77366b57b799dfa3ce1fcb850c068723a3213ee/library/std/src/sys/unix/thread.rs:108:17
31: 0x7fd1a64c8272 - start_thread
32: 0x7fd1a6543dec - __GI___clone3
33: 0x0 -
error: the compiler unexpectedly panicked. this is a bug.
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
note: rustc 1.71.0-nightly (e77366b57 2023-05-16) running on x86_64-unknown-linux-gnu
note: compiler flags: --crate-type lib -C opt-level=3 -C embed-bitcode=no -Z force-unstable-if-unmarked
note: some of the compiler flags provided by cargo are hidden
query stack during panic:
end of query stack
error: could not compile `compiler_builtins` (lib)
thread 'rustc' panicked at 'called `Result::unwrap()` on an `Err` value: Error("unimplemented architecture Aarch64_Ilp32")', compiler/rustc_codegen_ssa/src/back/metadata.rs:340:19
stack backtrace:
0: 0x7fbc1c71b6e1 - std::backtrace_rs::backtrace::libunwind::trace::h61ab8beb00634b74
at /rustc/e77366b57b799dfa3ce1fcb850c068723a3213ee/library/std/src/../../backtrace/src/backtrace/libunwind.rs:93:5
1: 0x7fbc1c71b6e1 - std::backtrace_rs::backtrace::trace_unsynchronized::h6b86b62159b762e9
at /rustc/e77366b57b799dfa3ce1fcb850c068723a3213ee/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
2: 0x7fbc1c71b6e1 - std::sys_common::backtrace::_print_fmt::h0ad7250d698f0715
at /rustc/e77366b57b799dfa3ce1fcb850c068723a3213ee/library/std/src/sys_common/backtrace.rs:65:5
3: 0x7fbc1c71b6e1 - ::fmt::h80c066c3055704df
at /rustc/e77366b57b799dfa3ce1fcb850c068723a3213ee/library/std/src/sys_common/backtrace.rs:44:22
4: 0x7fbc1c77bbdf - core::fmt::rt::Argument::fmt::h5e75ab5b01d12a26
at /rustc/e77366b57b799dfa3ce1fcb850c068723a3213ee/library/core/src/fmt/rt.rs:138:9
5: 0x7fbc1c77bbdf - core::fmt::write::h64b293fbdd962a5f
at /rustc/e77366b57b799dfa3ce1fcb850c068723a3213ee/library/core/src/fmt/mod.rs:1094:21
6: 0x7fbc1c70e9e1 - std::io::Write::write_fmt::he8ce86014df7242c
at /rustc/e77366b57b799dfa3ce1fcb850c068723a3213ee/library/std/src/io/mod.rs:1712:15
7: 0x7fbc1c71b4f5 - std::sys_common::backtrace::_print::h7f3e6c9f83fe08f9
at /rustc/e77366b57b799dfa3ce1fcb850c068723a3213ee/library/std/src/sys_common/backtrace.rs:47:5
8: 0x7fbc1c71b4f5 - std::sys_common::backtrace::print::h83582a5faf2b1e70
at /rustc/e77366b57b799dfa3ce1fcb850c068723a3213ee/library/std/src/sys_common/backtrace.rs:34:9
9: 0x7fbc1c71e177 - std::panicking::default_hook::{{closure}}::hfd7df5ef529b74a0
10: 0x7fbc1c71df64 - std::panicking::default_hook::hadbe6697b055bf56
at /rustc/e77366b57b799dfa3ce1fcb850c068723a3213ee/library/std/src/panicking.rs:288:9
11: 0x7fbc1f8f23cb - >::call_once::{shim:vtable#0}
12: 0x7fbc1c71e897 - as core::ops::function::Fn>::call::h1bd3edffd5c9f66e
at /rustc/e77366b57b799dfa3ce1fcb850c068723a3213ee/library/alloc/src/boxed.rs:1999:9
13: 0x7fbc1c71e897 - std::panicking::rust_panic_with_hook::hf8d00dde99df213d
at /rustc/e77366b57b799dfa3ce1fcb850c068723a3213ee/library/std/src/panicking.rs:695:13
14: 0x7fbc1c71e617 - std::panicking::begin_panic_handler::{{closure}}::h91d0d755bd2eb933
at /rustc/e77366b57b799dfa3ce1fcb850c068723a3213ee/library/std/src/panicking.rs:582:13
15: 0x7fbc1c71bb26 - std::sys_common::backtrace::__rust_end_short_backtrace::h5466d383b2b8fca8
at /rustc/e77366b57b799dfa3ce1fcb850c068723a3213ee/library/std/src/sys_common/backtrace.rs:150:18
16: 0x7fbc1c71e382 - rust_begin_unwind
at /rustc/e77366b57b799dfa3ce1fcb850c068723a3213ee/library/std/src/panicking.rs:578:5
17: 0x7fbc1c777e63 - core::panicking::panic_fmt::hc56187f6683426f1
at /rustc/e77366b57b799dfa3ce1fcb850c068723a3213ee/library/core/src/panicking.rs:67:14
18: 0x7fbc1c778483 - core::result::unwrap_failed::hcde4272aea1316d5
at /rustc/e77366b57b799dfa3ce1fcb850c068723a3213ee/library/core/src/result.rs:1651:5
19: 0x7fbc1f00133d - rustc_codegen_ssa[5e5bf152454e402c]::back::metadata::create_wrapper_file
20: 0x7fbc1efffa4c - rustc_codegen_ssa[5e5bf152454e402c]::back::link::link_rlib
21: 0x7fbc1effc712 - rustc_codegen_ssa[5e5bf152454e402c]::back::link::link_binary
22: 0x7fbc1effb184 - ::link
23: 0x7fbc1ee8e092 - ::link
24: 0x7fbc1ee7abe7 - rustc_span[ff0760e36ce007e]::set_source_map::, rustc_interface[612572f9f002b03e]::interface::run_compiler, rustc_driver_impl[f38f2d3ffb75e5ff]::run_compiler::{closure#1}>::{closure#0}::{closure#0}>
25: 0x7fbc1ee7a69e - >::set::, rustc_driver_impl[f38f2d3ffb75e5ff]::run_compiler::{closure#1}>::{closure#0}, core[6e0682c695a44ff2]::result::Result<(), rustc_span[ff0760e36ce007e]::ErrorGuaranteed>>
26: 0x7fbc1ee79c76 - std[be949fbdb9eff060]::sys_common::backtrace::__rust_begin_short_backtrace::, rustc_driver_impl[f38f2d3ffb75e5ff]::run_compiler::{closure#1}>::{closure#0}, core[6e0682c695a44ff2]::result::Result<(), rustc_span[ff0760e36ce007e]::ErrorGuaranteed>>::{closure#0}::{closure#0}, core[6e0682c695a44ff2]::result::Result<(), rustc_span[ff0760e36ce007e]::ErrorGuaranteed>>
27: 0x7fbc1ee79a25 - <::spawn_unchecked_, rustc_driver_impl[f38f2d3ffb75e5ff]::run_compiler::{closure#1}>::{closure#0}, core[6e0682c695a44ff2]::result::Result<(), rustc_span[ff0760e36ce007e]::ErrorGuaranteed>>::{closure#0}::{closure#0}, core[6e0682c695a44ff2]::result::Result<(), rustc_span[ff0760e36ce007e]::ErrorGuaranteed>>::{closure#1} as core[6e0682c695a44ff2]::ops::function::FnOnce<()>>::call_once::{shim:vtable#0}
28: 0x7fbc1c728d45 - as core::ops::function::FnOnce>::call_once::h300258ea9469d58c
at /rustc/e77366b57b799dfa3ce1fcb850c068723a3213ee/library/alloc/src/boxed.rs:1985:9
29: 0x7fbc1c728d45 - as core::ops::function::FnOnce>::call_once::h70f424d879172a25
at /rustc/e77366b57b799dfa3ce1fcb850c068723a3213ee/library/alloc/src/boxed.rs:1985:9
30: 0x7fbc1c728d45 - std::sys::unix::thread::Thread::new::thread_start::h9aeb8581e1fac144
at /rustc/e77366b57b799dfa3ce1fcb850c068723a3213ee/library/std/src/sys/unix/thread.rs:108:17
31: 0x7fbc1c4c8272 - start_thread
32: 0x7fbc1c543dec - __GI___clone3
33: 0x0 -
error: the compiler unexpectedly panicked. this is a bug.
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
note: rustc 1.71.0-nightly (e77366b57 2023-05-16) running on x86_64-unknown-linux-gnu
note: compiler flags: --crate-type lib -C opt-level=3 -C embed-bitcode=no -Z force-unstable-if-unmarked
note: some of the compiler flags provided by cargo are hidden
query stack during panic:
end of query stack
error: could not compile `core` (lib)