[INFO] cloning repository https://github.com/jgallagher-cs/rustc-ice
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/jgallagher-cs/rustc-ice" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjgallagher-cs%2Frustc-ice", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjgallagher-cs%2Frustc-ice'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] bfe4fea08de6610fe4c65657db5ee3bf2a456a55
[INFO] testing jgallagher-cs/rustc-ice against beta-2020-10-09 for beta-1.48-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjgallagher-cs%2Frustc-ice" "/workspace/builds/worker-5/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/jgallagher-cs/rustc-ice on toolchain beta-2020-10-09
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-10-09" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/jgallagher-cs/rustc-ice
[INFO] finished tweaking git repo https://github.com/jgallagher-cs/rustc-ice
[INFO] tweaked toml for git repo https://github.com/jgallagher-cs/rustc-ice written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] crate git repo https://github.com/jgallagher-cs/rustc-ice already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-10-09" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-10-09" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2c9befd389b94665382e631a0527dfefee8f161e8e044ba76d47f67640906b6f
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "2c9befd389b94665382e631a0527dfefee8f161e8e044ba76d47f67640906b6f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2c9befd389b94665382e631a0527dfefee8f161e8e044ba76d47f67640906b6f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2c9befd389b94665382e631a0527dfefee8f161e8e044ba76d47f67640906b6f", kill_on_drop: false }`
[INFO] [stdout] 2c9befd389b94665382e631a0527dfefee8f161e8e044ba76d47f67640906b6f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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=warn" "-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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-10-09" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 121b02cc5493332943a26248ed2ca81042bba307a3d8aee16f4f67c1b07e3429
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "121b02cc5493332943a26248ed2ca81042bba307a3d8aee16f4f67c1b07e3429", kill_on_drop: false }`
[INFO] [stderr]    Compiling rustc-ice v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] thread 'rustc' panicked at 'called `Option::unwrap()` on a `None` value', compiler/rustc_codegen_llvm/src/back/archive.rs:274:67
[INFO] [stderr] stack backtrace:
[INFO] [stderr]    0:     0x7f1b3675b410 - std::backtrace_rs::backtrace::libunwind::trace::h7cf3ca97bd83fbab
[INFO] [stderr]                                at /rustc/212e76c31d461462544b5d516d3bdc99fc8f016e/library/std/src/../../backtrace/src/backtrace/libunwind.rs:96
[INFO] [stderr]    1:     0x7f1b3675b410 - std::backtrace_rs::backtrace::trace_unsynchronized::h5a69c674b2d9ea5c
[INFO] [stderr]                                at /rustc/212e76c31d461462544b5d516d3bdc99fc8f016e/library/std/src/../../backtrace/src/backtrace/mod.rs:66
[INFO] [stderr]    2:     0x7f1b3675b410 - std::sys_common::backtrace::_print_fmt::hdf72478dfcb50678
[INFO] [stderr]                                at /rustc/212e76c31d461462544b5d516d3bdc99fc8f016e/library/std/src/sys_common/backtrace.rs:79
[INFO] [stderr]    3:     0x7f1b3675b410 - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::h1e0bdbb35e83deca
[INFO] [stderr]                                at /rustc/212e76c31d461462544b5d516d3bdc99fc8f016e/library/std/src/sys_common/backtrace.rs:58
[INFO] [stderr]    4:     0x7f1b367c95cc - core::fmt::write::he67f9b17bcb7ee73
[INFO] [stderr]                                at /rustc/212e76c31d461462544b5d516d3bdc99fc8f016e/library/core/src/fmt/mod.rs:1080
[INFO] [stderr]    5:     0x7f1b3674d072 - std::io::Write::write_fmt::hac97d5cb5753e2ec
[INFO] [stderr]                                at /rustc/212e76c31d461462544b5d516d3bdc99fc8f016e/library/std/src/io/mod.rs:1516
[INFO] [stderr]    6:     0x7f1b3676018d - std::sys_common::backtrace::_print::haa20918e28a126c5
[INFO] [stderr]                                at /rustc/212e76c31d461462544b5d516d3bdc99fc8f016e/library/std/src/sys_common/backtrace.rs:61
[INFO] [stderr]    7:     0x7f1b3676018d - std::sys_common::backtrace::print::h49e772a4873d9076
[INFO] [stderr]                                at /rustc/212e76c31d461462544b5d516d3bdc99fc8f016e/library/std/src/sys_common/backtrace.rs:48
[INFO] [stderr]    8:     0x7f1b3676018d - std::panicking::default_hook::{{closure}}::hb218b305d15e3f11
[INFO] [stderr]                                at /rustc/212e76c31d461462544b5d516d3bdc99fc8f016e/library/std/src/panicking.rs:208
[INFO] [stderr]    9:     0x7f1b3675fe38 - std::panicking::default_hook::h63997b7b949e1ce0
[INFO] [stderr]                                at /rustc/212e76c31d461462544b5d516d3bdc99fc8f016e/library/std/src/panicking.rs:227
[INFO] [stderr]   10:     0x7f1b36fe90b4 - rustc_driver::report_ice::h5b9fb8474972c25e
[INFO] [stderr]   11:     0x7f1b367609d6 - std::panicking::rust_panic_with_hook::hb54f09ccadf64bd3
[INFO] [stderr]                                at /rustc/212e76c31d461462544b5d516d3bdc99fc8f016e/library/std/src/panicking.rs:581
[INFO] [stderr]   12:     0x7f1b36760559 - std::panicking::begin_panic_handler::{{closure}}::h8b43445b254eeb30
[INFO] [stderr]                                at /rustc/212e76c31d461462544b5d516d3bdc99fc8f016e/library/std/src/panicking.rs:484
[INFO] [stderr]   13:     0x7f1b3675b89c - std::sys_common::backtrace::__rust_end_short_backtrace::hacd691450edfeae0
[INFO] [stderr]                                at /rustc/212e76c31d461462544b5d516d3bdc99fc8f016e/library/std/src/sys_common/backtrace.rs:153
[INFO] [stderr]   14:     0x7f1b36760519 - rust_begin_unwind
[INFO] [stderr]                                at /rustc/212e76c31d461462544b5d516d3bdc99fc8f016e/library/std/src/panicking.rs:483
[INFO] [stderr]   15:     0x7f1b367c60d1 - core::panicking::panic_fmt::h5b17d4a0e853d0f5
[INFO] [stderr]                                at /rustc/212e76c31d461462544b5d516d3bdc99fc8f016e/library/core/src/panicking.rs:85
[INFO] [stderr]   16:     0x7f1b367c601d - core::panicking::panic::hc6be4d7009fb30ae
[INFO] [stderr]                                at /rustc/212e76c31d461462544b5d516d3bdc99fc8f016e/library/core/src/panicking.rs:50
[INFO] [stderr]   17:     0x7f1b373f0c5f - <rustc_codegen_llvm::back::archive::LlvmArchiveBuilder as rustc_codegen_ssa::back::archive::ArchiveBuilder>::build::hde0ae06953f7d0fa
[INFO] [stderr]   18:     0x7f1b373433db - rustc_codegen_ssa::back::link::link_binary::h33a7cac656d675d3
[INFO] [stderr]   19:     0x7f1b374c0d04 - rustc_session::utils::<impl rustc_session::session::Session>::time::h34802b2b15adf60b
[INFO] [stderr]   20:     0x7f1b374b8cc3 - <rustc_codegen_llvm::LlvmCodegenBackend as rustc_codegen_ssa::traits::backend::CodegenBackend>::link::h42bc0346717cbfc7
[INFO] [stderr]   21:     0x7f1b372a20e0 - rustc_interface::queries::Linker::link::hc51654b0781ae60b
[INFO] [stderr]   22:     0x7f1b3700cb26 - rustc_span::with_source_map::h755817392b17a216
[INFO] [stderr]   23:     0x7f1b37033ac1 - scoped_tls::ScopedKey<T>::set::he59500e39ec4abad
[INFO] [stderr]   24:     0x7f1b3703ae21 - std::sys_common::backtrace::__rust_begin_short_backtrace::hd47de080afaa24c1
[INFO] [stderr]   25:     0x7f1b36fb5f4e - core::ops::function::FnOnce::call_once{{vtable.shim}}::hd9b6798a9391b23c
[INFO] [stderr]   26:     0x7f1b3676f70a - <alloc::boxed::Box<F> as core::ops::function::FnOnce<A>>::call_once::hd4d30e37db281e8f
[INFO] [stderr]                                at /rustc/212e76c31d461462544b5d516d3bdc99fc8f016e/library/alloc/src/boxed.rs:1042
[INFO] [stderr]   27:     0x7f1b3676f70a - <alloc::boxed::Box<F> as core::ops::function::FnOnce<A>>::call_once::h019185a215ba16e4
[INFO] [stderr]                                at /rustc/212e76c31d461462544b5d516d3bdc99fc8f016e/library/alloc/src/boxed.rs:1042
[INFO] [stderr]   28:     0x7f1b3676f70a - std::sys::unix::thread::Thread::new::thread_start::h33c6d7cf25f9291f
[INFO] [stderr]                                at /rustc/212e76c31d461462544b5d516d3bdc99fc8f016e/library/std/src/sys/unix/thread.rs:87
[INFO] [stderr]   29:     0x7f1b3668b609 - start_thread
[INFO] [stderr]   30:     0x7f1b365ac103 - clone
[INFO] [stderr]   31:                0x0 - <unknown>
[INFO] [stderr] 
[INFO] [stderr] error: internal compiler error: unexpected panic
[INFO] [stderr] 
[INFO] [stderr] note: the compiler unexpectedly panicked. this is a bug.
[INFO] [stderr] 
[INFO] [stderr] note: we would appreciate a bug report: https://github.com/rust-lang/rust/issues/new?labels=C-bug%2C+I-ICE%2C+T-compiler&template=ice.md
[INFO] [stderr] 
[INFO] [stderr] note: rustc 1.48.0-beta.2 (212e76c31 2020-10-08) running on x86_64-unknown-linux-gnu
[INFO] [stderr] 
[INFO] [stderr] note: compiler flags: -C embed-bitcode=no -C debuginfo=2 --crate-type lib
[INFO] [stderr] 
[INFO] [stderr] note: some of the compiler flags provided by cargo are hidden
[INFO] [stderr] 
[INFO] [stderr] query stack during panic:
[INFO] [stderr] end of query stack
[INFO] [stderr] error: could not compile `rustc-ice`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "121b02cc5493332943a26248ed2ca81042bba307a3d8aee16f4f67c1b07e3429", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "121b02cc5493332943a26248ed2ca81042bba307a3d8aee16f4f67c1b07e3429", kill_on_drop: false }`
[INFO] [stdout] 121b02cc5493332943a26248ed2ca81042bba307a3d8aee16f4f67c1b07e3429
