[INFO] fetching crate advent-of-code 2019.12.155... [INFO] checking advent-of-code-2019.12.155 against try#9b49d8c6c904f63eb486fe51b14bbe0aa2feda4c for pr-79472 [INFO] extracting crate advent-of-code 2019.12.155 into /workspace/builds/worker-2/source [INFO] validating manifest of crates.io crate advent-of-code 2019.12.155 on toolchain 9b49d8c6c904f63eb486fe51b14bbe0aa2feda4c [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+9b49d8c6c904f63eb486fe51b14bbe0aa2feda4c" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] started tweaking crates.io crate advent-of-code 2019.12.155 [INFO] finished tweaking crates.io crate advent-of-code 2019.12.155 [INFO] tweaked toml for crates.io crate advent-of-code 2019.12.155 written to /workspace/builds/worker-2/source/Cargo.toml [INFO] crate crates.io crate advent-of-code 2019.12.155 already has a lockfile, it will not be regenerated [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+9b49d8c6c904f63eb486fe51b14bbe0aa2feda4c" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Downloading crates ... [INFO] [stderr] Downloaded paste v1.0.3 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+9b49d8c6c904f63eb486fe51b14bbe0aa2feda4c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 941db19be1aa62998248c510a2bc51c51d3604347cfd878af4e9106d80d07a93 [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" "941db19be1aa62998248c510a2bc51c51d3604347cfd878af4e9106d80d07a93", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "941db19be1aa62998248c510a2bc51c51d3604347cfd878af4e9106d80d07a93", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "941db19be1aa62998248c510a2bc51c51d3604347cfd878af4e9106d80d07a93", kill_on_drop: false }` [INFO] [stdout] 941db19be1aa62998248c510a2bc51c51d3604347cfd878af4e9106d80d07a93 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "rustops/crates-build-env@sha256:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+9b49d8c6c904f63eb486fe51b14bbe0aa2feda4c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] c6c905e790d12f99d6ad92324a4c48b83e5860901b43900e47d81760265afad8 [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" "c6c905e790d12f99d6ad92324a4c48b83e5860901b43900e47d81760265afad8", kill_on_drop: false }` [INFO] [stderr] Compiling paste v1.0.3 [INFO] [stderr] Checking advent-of-code v2019.12.155 (/opt/rustwide/workdir) [INFO] [stderr] thread 'rustc' panicked at 'expected Item', compiler/rustc_expand/src/base.rs:147:18 [INFO] [stderr] stack backtrace: [INFO] [stderr] 0: 0x7f358bf3de30 - std::backtrace_rs::backtrace::libunwind::trace::h746c3e9529d524bc [INFO] [stderr] at /rustc/9b49d8c6c904f63eb486fe51b14bbe0aa2feda4c/library/std/src/../../backtrace/src/backtrace/libunwind.rs:90:5 [INFO] [stderr] 1: 0x7f358bf3de30 - std::backtrace_rs::backtrace::trace_unsynchronized::h86340908ff889faa [INFO] [stderr] at /rustc/9b49d8c6c904f63eb486fe51b14bbe0aa2feda4c/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5 [INFO] [stderr] 2: 0x7f358bf3de30 - std::sys_common::backtrace::_print_fmt::h43f85f9b18230404 [INFO] [stderr] at /rustc/9b49d8c6c904f63eb486fe51b14bbe0aa2feda4c/library/std/src/sys_common/backtrace.rs:67:5 [INFO] [stderr] 3: 0x7f358bf3de30 - ::fmt::hc132ae1a5b5aa7cd [INFO] [stderr] at /rustc/9b49d8c6c904f63eb486fe51b14bbe0aa2feda4c/library/std/src/sys_common/backtrace.rs:46:22 [INFO] [stderr] 4: 0x7f358bfb0bfc - core::fmt::write::hdf023a0036d2a25f [INFO] [stderr] at /rustc/9b49d8c6c904f63eb486fe51b14bbe0aa2feda4c/library/core/src/fmt/mod.rs:1078:17 [INFO] [stderr] 5: 0x7f358bf2f9a2 - std::io::Write::write_fmt::h8580846154bcb66a [INFO] [stderr] at /rustc/9b49d8c6c904f63eb486fe51b14bbe0aa2feda4c/library/std/src/io/mod.rs:1519:15 [INFO] [stderr] 6: 0x7f358bf41a95 - std::sys_common::backtrace::_print::h7ee55fed88d107a3 [INFO] [stderr] at /rustc/9b49d8c6c904f63eb486fe51b14bbe0aa2feda4c/library/std/src/sys_common/backtrace.rs:49:5 [INFO] [stderr] 7: 0x7f358bf41a95 - std::sys_common::backtrace::print::h54a7d3e52a524177 [INFO] [stderr] at /rustc/9b49d8c6c904f63eb486fe51b14bbe0aa2feda4c/library/std/src/sys_common/backtrace.rs:36:9 [INFO] [stderr] 8: 0x7f358bf41a95 - std::panicking::default_hook::{{closure}}::h60921e857bf55a40 [INFO] [stderr] at /rustc/9b49d8c6c904f63eb486fe51b14bbe0aa2feda4c/library/std/src/panicking.rs:208:50 [INFO] [stderr] 9: 0x7f358bf415ea - std::panicking::default_hook::hf0f9afb1017317fc [INFO] [stderr] at /rustc/9b49d8c6c904f63eb486fe51b14bbe0aa2feda4c/library/std/src/panicking.rs:225:9 [INFO] [stderr] 10: 0x7f358c7d1e88 - rustc_driver::report_ice::ha25ae86a5858acc3 [INFO] [stderr] 11: 0x7f358bf42396 - std::panicking::rust_panic_with_hook::h8d66bf42b407aaea [INFO] [stderr] at /rustc/9b49d8c6c904f63eb486fe51b14bbe0aa2feda4c/library/std/src/panicking.rs:595:17 [INFO] [stderr] 12: 0x7f358e815344 - std::panicking::begin_panic::{{closure}}::h8bff60b0f219be40 [INFO] [stderr] 13: 0x7f358e8152ec - std::sys_common::backtrace::__rust_end_short_backtrace::h01202bfe3ce142a0 [INFO] [stderr] 14: 0x7f358e8f8ddc - std::panicking::begin_panic::h35cf7548070bf646 [INFO] [stderr] 15: 0x7f358e805e71 - rustc_expand::expand::MacroExpander::fully_expand_fragment::hcafcbeedba40799f [INFO] [stderr] 16: 0x7f358e8017fe - rustc_expand::expand::MacroExpander::expand_crate::hd5614e1080b391fe [INFO] [stderr] 17: 0x7f358c9fab22 - rustc_session::utils::::time::h75966864c8cc66ff [INFO] [stderr] 18: 0x7f358ca2e402 - rustc_interface::passes::configure_and_expand_inner::hda298414c45f583f [INFO] [stderr] 19: 0x7f358c9f2195 - rustc_interface::passes::configure_and_expand::{{closure}}::h813ffe7bd685ca4d [INFO] [stderr] 20: 0x7f358c9e23cf - rustc_data_structures::box_region::PinnedGenerator::new::hdb41118f8a4b2b1c [INFO] [stderr] 21: 0x7f358ca34c25 - rustc_interface::queries::Queries::expansion::h87720e7c14def5c1 [INFO] [stderr] 22: 0x7f358c82bfe5 - rustc_interface::queries::::enter::hcfd2504bb4e8d292 [INFO] [stderr] 23: 0x7f358c7fa797 - rustc_span::with_source_map::hdf17fa3a4d8fe35b [INFO] [stderr] 24: 0x7f358c8288cc - scoped_tls::ScopedKey::set::h5dca480b178bbfab [INFO] [stderr] 25: 0x7f358c82f9e5 - std::sys_common::backtrace::__rust_begin_short_backtrace::ha4cbf96baa7e4912 [INFO] [stderr] 26: 0x7f358c7985ca - core::ops::function::FnOnce::call_once{{vtable.shim}}::he2d69591c700ddc8 [INFO] [stderr] 27: 0x7f358bf5165a - as core::ops::function::FnOnce>::call_once::hea1090dbdcecbf5a [INFO] [stderr] at /rustc/9b49d8c6c904f63eb486fe51b14bbe0aa2feda4c/library/alloc/src/boxed.rs:1318:9 [INFO] [stderr] 28: 0x7f358bf5165a - as core::ops::function::FnOnce>::call_once::h8d5723d3912bd325 [INFO] [stderr] at /rustc/9b49d8c6c904f63eb486fe51b14bbe0aa2feda4c/library/alloc/src/boxed.rs:1318:9 [INFO] [stderr] 29: 0x7f358bf5165a - std::sys::unix::thread::Thread::new::thread_start::hc17a425ca2995724 [INFO] [stderr] at /rustc/9b49d8c6c904f63eb486fe51b14bbe0aa2feda4c/library/std/src/sys/unix/thread.rs:71:17 [INFO] [stderr] 30: 0x7f358be69609 - start_thread [INFO] [stderr] 31: 0x7f358bd7d293 - clone [INFO] [stderr] 32: 0x0 - [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 1.50.0-nightly (9b49d8c6c 2020-11-27) 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 `advent-of-code` [INFO] [stderr] [INFO] [stderr] To learn more, run the command again with --verbose. [INFO] [stderr] warning: build failed, waiting for other jobs to finish... [INFO] [stderr] error: build failed [INFO] running `Command { std: "docker" "inspect" "c6c905e790d12f99d6ad92324a4c48b83e5860901b43900e47d81760265afad8", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "c6c905e790d12f99d6ad92324a4c48b83e5860901b43900e47d81760265afad8", kill_on_drop: false }` [INFO] [stdout] c6c905e790d12f99d6ad92324a4c48b83e5860901b43900e47d81760265afad8