[INFO] cloning repository https://github.com/perlindgren/array_list [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/perlindgren/array_list" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fperlindgren%2Farray_list", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fperlindgren%2Farray_list'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 968b3d2e58566fdad8e28f94f8565f2495200922 [INFO] checking perlindgren/array_list against try#ff044a3d65d25a17c3e14c1530004e1540179ba7 for pr-78338 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fperlindgren%2Farray_list" "/workspace/builds/worker-3/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-3/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/perlindgren/array_list on toolchain ff044a3d65d25a17c3e14c1530004e1540179ba7 [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ff044a3d65d25a17c3e14c1530004e1540179ba7" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/perlindgren/array_list [INFO] finished tweaking git repo https://github.com/perlindgren/array_list [INFO] tweaked toml for git repo https://github.com/perlindgren/array_list written to /workspace/builds/worker-3/source/Cargo.toml [INFO] crate git repo https://github.com/perlindgren/array_list already has a lockfile, it will not be regenerated [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ff044a3d65d25a17c3e14c1530004e1540179ba7" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "+ff044a3d65d25a17c3e14c1530004e1540179ba7" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] cd888586a001373588788a382e6862309617fac2b3b5068562e571df096ce85d [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" "cd888586a001373588788a382e6862309617fac2b3b5068562e571df096ce85d", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "cd888586a001373588788a382e6862309617fac2b3b5068562e571df096ce85d", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "cd888586a001373588788a382e6862309617fac2b3b5068562e571df096ce85d", kill_on_drop: false }` [INFO] [stdout] cd888586a001373588788a382e6862309617fac2b3b5068562e571df096ce85d [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+ff044a3d65d25a17c3e14c1530004e1540179ba7" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] a49a32cc0c471b2cc1c92920dc24e23f1a14e283cfd5e86bdfb65c64801e3c44 [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" "a49a32cc0c471b2cc1c92920dc24e23f1a14e283cfd5e86bdfb65c64801e3c44", kill_on_drop: false }` [INFO] [stderr] Checking array_list v0.1.0 (/opt/rustwide/workdir) [INFO] [stderr] thread 'rustc' panicked at 'assertion failed: promoted.is_none()', compiler/rustc_mir/src/transform/check_consts/qualifs.rs:248:9 [INFO] [stderr] stack backtrace: [INFO] [stderr] 0: 0x7fbc54630a20 - std::backtrace_rs::backtrace::libunwind::trace::h303a626d53553a64 [INFO] [stderr] at /rustc/ff044a3d65d25a17c3e14c1530004e1540179ba7/library/std/src/../../backtrace/src/backtrace/libunwind.rs:100:5 [INFO] [stderr] 1: 0x7fbc54630a20 - std::backtrace_rs::backtrace::trace_unsynchronized::h6abb882733c3f18c [INFO] [stderr] at /rustc/ff044a3d65d25a17c3e14c1530004e1540179ba7/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5 [INFO] [stderr] 2: 0x7fbc54630a20 - std::sys_common::backtrace::_print_fmt::h57829321f1d9217a [INFO] [stderr] at /rustc/ff044a3d65d25a17c3e14c1530004e1540179ba7/library/std/src/sys_common/backtrace.rs:67:5 [INFO] [stderr] 3: 0x7fbc54630a20 - ::fmt::h400b66a054640aac [INFO] [stderr] at /rustc/ff044a3d65d25a17c3e14c1530004e1540179ba7/library/std/src/sys_common/backtrace.rs:46:22 [INFO] [stderr] 4: 0x7fbc5469fe9c - core::fmt::write::h1857a60b204f1b6a [INFO] [stderr] at /rustc/ff044a3d65d25a17c3e14c1530004e1540179ba7/library/core/src/fmt/mod.rs:1076:17 [INFO] [stderr] 5: 0x7fbc54622642 - std::io::Write::write_fmt::h6453b28c8b27c6ea [INFO] [stderr] at /rustc/ff044a3d65d25a17c3e14c1530004e1540179ba7/library/std/src/io/mod.rs:1516:15 [INFO] [stderr] 6: 0x7fbc546359d5 - std::sys_common::backtrace::_print::h15cc4b3923cc9bc0 [INFO] [stderr] at /rustc/ff044a3d65d25a17c3e14c1530004e1540179ba7/library/std/src/sys_common/backtrace.rs:49:5 [INFO] [stderr] 7: 0x7fbc546359d5 - std::sys_common::backtrace::print::h953c7be178c0674d [INFO] [stderr] at /rustc/ff044a3d65d25a17c3e14c1530004e1540179ba7/library/std/src/sys_common/backtrace.rs:36:9 [INFO] [stderr] 8: 0x7fbc546359d5 - std::panicking::default_hook::{{closure}}::h635d667f571198f0 [INFO] [stderr] at /rustc/ff044a3d65d25a17c3e14c1530004e1540179ba7/library/std/src/panicking.rs:208:50 [INFO] [stderr] 9: 0x7fbc54635678 - std::panicking::default_hook::h3bc2efb48060abaa [INFO] [stderr] at /rustc/ff044a3d65d25a17c3e14c1530004e1540179ba7/library/std/src/panicking.rs:227:9 [INFO] [stdout] warning: associated function is never used: `free` [INFO] [stdout] --> src/main.rs:48:8 [INFO] [stdout] | [INFO] [stdout] 48 | fn free(&mut self, i: u8) { [INFO] [stdout] | ^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `push` [INFO] [stdout] --> src/main.rs:78:8 [INFO] [stdout] | [INFO] [stdout] 78 | fn push(&mut self, v: T) { [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `pop` [INFO] [stdout] --> src/main.rs:92:8 [INFO] [stdout] | [INFO] [stdout] 92 | fn pop(&mut self) -> T { [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `free` [INFO] [stdout] --> src/main.rs:48:8 [INFO] [stdout] | [INFO] [stdout] 48 | fn free(&mut self, i: u8) { [INFO] [stdout] | ^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `push` [INFO] [stdout] --> src/main.rs:78:8 [INFO] [stdout] | [INFO] [stdout] 78 | fn push(&mut self, v: T) { [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `pop` [INFO] [stdout] --> src/main.rs:92:8 [INFO] [stdout] | [INFO] [stdout] 92 | fn pop(&mut self) -> T { [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `std::result::Result` that must be used [INFO] [stdout] --> src/main.rs:115:9 [INFO] [stdout] | [INFO] [stdout] 115 | write!(f, "List :"); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_must_use)]` on by default [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `std::result::Result` that must be used [INFO] [stdout] --> src/main.rs:118:13 [INFO] [stdout] | [INFO] [stdout] 118 | write!(f, "{:?}, ", self.nodes[i as usize].data); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 5 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] 10: 0x7fbc54efee08 - rustc_driver::report_ice::hbf1325c7565687ba [INFO] [stderr] 11: 0x7fbc54636216 - std::panicking::rust_panic_with_hook::h887eb0c89f46b8b2 [INFO] [stderr] at /rustc/ff044a3d65d25a17c3e14c1530004e1540179ba7/library/std/src/panicking.rs:581:17 [INFO] [stderr] 12: 0x7fbc566fde84 - std::panicking::begin_panic::{{closure}}::he62637986d6e9f0d [INFO] [stderr] 13: 0x7fbc566fdd1c - std::sys_common::backtrace::__rust_end_short_backtrace::he20126e5126df717 [INFO] [stderr] 14: 0x7fbc566fddcc - std::panicking::begin_panic::hfa89505cfff75d80 [INFO] [stderr] 15: 0x7fbc563f561a - rustc_mir::transform::check_consts::qualifs::in_operand::h2cf8228c7821c732 [INFO] [stderr] 16: 0x7fbc56507809 - rustc_mir::transform::promote_consts::Validator::qualif_local::h3589980c3f5442bd [INFO] [stderr] 17: 0x7fbc565088c7 - rustc_mir::transform::promote_consts::Validator::validate_local::h31aeeda345a6ec62 [INFO] [stderr] 18: 0x7fbc565088ac - rustc_mir::transform::promote_consts::Validator::validate_local::h31aeeda345a6ec62 [INFO] [stderr] 19: 0x7fbc56508574 - rustc_mir::transform::promote_consts::Validator::validate_local::h31aeeda345a6ec62 [INFO] [stderr] 20: 0x7fbc5650d975 - rustc_mir::transform::promote_consts::should_suggest_const_in_array_repeat_expressions_attribute::had9d8b1f5dc92e15 [INFO] [stderr] 21: 0x7fbc562a889a - rustc_mir::borrow_check::type_check::TypeChecker::check_rvalue::hc2fda4fe1c6b2353 [INFO] [stderr] 22: 0x7fbc562ac3b6 - rustc_mir::borrow_check::type_check::TypeChecker::typeck_mir::h23914bc008f899ed [INFO] [stderr] 23: 0x7fbc5629f65f - rustc_mir::borrow_check::type_check::type_check::hfcac3934a4212663 [INFO] [stderr] 24: 0x7fbc56594ee7 - rustc_mir::borrow_check::nll::compute_regions::hfe8f6f3c0c79355b [INFO] [stderr] 25: 0x7fbc5673803b - rustc_mir::borrow_check::do_mir_borrowck::h4acacd61f33a7b7e [INFO] [stderr] 26: 0x7fbc561c6716 - rustc_infer::infer::InferCtxtBuilder::enter::hd5556efaa818b431 [INFO] [stderr] 27: 0x7fbc56735079 - rustc_mir::borrow_check::mir_borrowck::h15a86e919fc8eed4 [INFO] [stderr] 28: 0x7fbc566fef65 - core::ops::function::FnOnce::call_once::h03dbe0b786591256 [INFO] [stderr] 29: 0x7fbc55146995 - rustc_middle::ty::query:: for rustc_middle::ty::query::queries::mir_borrowck>::compute::h6e0262522c39a99c [INFO] [stderr] 30: 0x7fbc550b0b27 - rustc_query_system::dep_graph::graph::DepGraph::with_task_impl::h5c9390fb8a19a820 [INFO] [stderr] 31: 0x7fbc55121e81 - rustc_data_structures::stack::ensure_sufficient_stack::h794e42b56d3a2faf [INFO] [stderr] 32: 0x7fbc5508f393 - rustc_query_system::query::plumbing::get_query_impl::hd73f3a60b9c331e5 [INFO] [stdout] warning: unused `std::result::Result` that must be used [INFO] [stdout] --> src/main.rs:115:9 [INFO] [stdout] | [INFO] [stdout] 115 | write!(f, "List :"); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_must_use)]` on by default [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `std::result::Result` that must be used [INFO] [stdout] --> src/main.rs:118:13 [INFO] [stdout] | [INFO] [stdout] 118 | write!(f, "{:?}, ", self.nodes[i as usize].data); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] 33: 0x7fbc55094d69 - rustc_query_system::query::plumbing::ensure_query_impl::h131eeca101f5d6af [INFO] [stderr] 34: 0x7fbc551427c7 - rustc_interface::passes::analysis::hf34e525a2b31f7c0 [INFO] [stderr] 35: 0x7fbc54e7e56b - rustc_middle::ty::query:: for rustc_middle::ty::query::queries::analysis>::compute::h23cb841af51f0584 [INFO] [stderr] 36: 0x7fbc54f1c847 - rustc_query_system::dep_graph::graph::DepGraph::with_task_impl::h7178e9f1ddee6943 [INFO] [stderr] 37: 0x7fbc54f17bcf - rustc_middle::ty::query::plumbing::::start_query::{{closure}}::{{closure}}::{{closure}}::h4025824db8759ceb [INFO] [stderr] 38: 0x7fbc54ea9700 - rustc_query_system::query::plumbing::get_query_impl::h29928f066778d4c4 [INFO] [stderr] 39: 0x7fbc54e8091b - rustc_interface::passes::QueryContext::enter::h0705343d8e4a95be [INFO] [stderr] 40: 0x7fbc54f19c92 - rustc_interface::queries::::enter::h6eb07f11eba80bd6 [INFO] [stderr] 41: 0x7fbc54ee0a92 - rustc_span::with_source_map::h3820d41b3a036910 [INFO] [stderr] 42: 0x7fbc54f1b1b2 - rustc_interface::interface::create_compiler_and_run::h08ad396f4e7721e0 [INFO] [stderr] 43: 0x7fbc54f0354a - scoped_tls::ScopedKey::set::hd425a36fbe06985e [INFO] [stderr] 44: 0x7fbc54f201a5 - std::sys_common::backtrace::__rust_begin_short_backtrace::h23925571219dbc63 [INFO] [stderr] 45: 0x7fbc54e9dbbe - core::ops::function::FnOnce::call_once{{vtable.shim}}::h43b61b9af30b3669 [INFO] [stderr] 46: 0x7fbc5464521a - as core::ops::function::FnOnce>::call_once::h88864ee659ddb161 [INFO] [stderr] at /rustc/ff044a3d65d25a17c3e14c1530004e1540179ba7/library/alloc/src/boxed.rs:1042:9 [INFO] [stderr] 47: 0x7fbc5464521a - as core::ops::function::FnOnce>::call_once::h9f03cbdc7ab33431 [INFO] [stderr] at /rustc/ff044a3d65d25a17c3e14c1530004e1540179ba7/library/alloc/src/boxed.rs:1042:9 [INFO] [stderr] 48: 0x7fbc5464521a - std::sys::unix::thread::Thread::new::thread_start::h5979dd5560a11418 [INFO] [stderr] at /rustc/ff044a3d65d25a17c3e14c1530004e1540179ba7/library/std/src/sys/unix/thread.rs:89:17 [INFO] [stderr] 49: 0x7fbc54560609 - start_thread [INFO] [stderr] 50: 0x7fbc54474103 - clone [INFO] [stderr] 51: 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 1.49.0-nightly (ff044a3d6 2020-10-24) running on x86_64-unknown-linux-gnu [INFO] [stderr] [INFO] [stderr] note: compiler flags: -C embed-bitcode=no -C debuginfo=2 --crate-type bin [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 [mir_borrowck] borrow-checking `A` [INFO] [stderr] #1 [analysis] running analysis passes on this crate [INFO] [stderr] end of query stack [INFO] [stdout] warning: 5 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] error: could not compile `array_list` [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" "a49a32cc0c471b2cc1c92920dc24e23f1a14e283cfd5e86bdfb65c64801e3c44", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "a49a32cc0c471b2cc1c92920dc24e23f1a14e283cfd5e86bdfb65c64801e3c44", kill_on_drop: false }` [INFO] [stdout] a49a32cc0c471b2cc1c92920dc24e23f1a14e283cfd5e86bdfb65c64801e3c44