[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 master#430feb24a46993e5073c1bb1b39da190d83fa2bf for pr-78363 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fperlindgren%2Farray_list" "/workspace/builds/worker-4/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/perlindgren/array_list on toolchain 430feb24a46993e5073c1bb1b39da190d83fa2bf [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+430feb24a46993e5073c1bb1b39da190d83fa2bf" "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-4/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" "+430feb24a46993e5073c1bb1b39da190d83fa2bf" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "+430feb24a46993e5073c1bb1b39da190d83fa2bf" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] [stdout] 80509739d852d46250b2ebd4ec11393382351bc86675d946dae76e4d370f49ff [INFO] running `Command { std: "docker" "start" "-a" "80509739d852d46250b2ebd4ec11393382351bc86675d946dae76e4d370f49ff", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "80509739d852d46250b2ebd4ec11393382351bc86675d946dae76e4d370f49ff", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "80509739d852d46250b2ebd4ec11393382351bc86675d946dae76e4d370f49ff", kill_on_drop: false }` [INFO] [stdout] 80509739d852d46250b2ebd4ec11393382351bc86675d946dae76e4d370f49ff [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "+430feb24a46993e5073c1bb1b39da190d83fa2bf" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 9f001a274baf3180c5aab3745b00626d4b8c2e7bc795debd244b72d779c62188 [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" "9f001a274baf3180c5aab3745b00626d4b8c2e7bc795debd244b72d779c62188", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [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: 0x7f0e8d760bb0 - std::backtrace_rs::backtrace::libunwind::trace::h448c56741b6011d3 [INFO] [stderr] at /rustc/430feb24a46993e5073c1bb1b39da190d83fa2bf/library/std/src/../../backtrace/src/backtrace/libunwind.rs:100:5 [INFO] [stderr] 1: 0x7f0e8d760bb0 - std::backtrace_rs::backtrace::trace_unsynchronized::h881b9d30a8a89a0c [INFO] [stderr] at /rustc/430feb24a46993e5073c1bb1b39da190d83fa2bf/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5 [INFO] [stderr] 2: 0x7f0e8d760bb0 - std::sys_common::backtrace::_print_fmt::h720a2f61f75b9f58 [INFO] [stderr] at /rustc/430feb24a46993e5073c1bb1b39da190d83fa2bf/library/std/src/sys_common/backtrace.rs:67:5 [INFO] [stderr] 3: 0x7f0e8d760bb0 - ::fmt::h8d62bbfda6d5c836 [INFO] [stderr] at /rustc/430feb24a46993e5073c1bb1b39da190d83fa2bf/library/std/src/sys_common/backtrace.rs:46:22 [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] [stderr] 4: 0x7f0e8d7d0b7c - core::fmt::write::h1857a60b204f1b6a [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] [stderr] at /rustc/430feb24a46993e5073c1bb1b39da190d83fa2bf/library/core/src/fmt/mod.rs:1076:17 [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] [stderr] 5: 0x7f0e8d752812 - std::io::Write::write_fmt::h16a9fe7680ac245c [INFO] [stderr] at /rustc/430feb24a46993e5073c1bb1b39da190d83fa2bf/library/std/src/io/mod.rs:1516:15 [INFO] [stderr] 6: 0x7f0e8d765b65 - std::sys_common::backtrace::_print::h9ba51a6db618de7d [INFO] [stderr] at /rustc/430feb24a46993e5073c1bb1b39da190d83fa2bf/library/std/src/sys_common/backtrace.rs:49:5 [INFO] [stderr] 7: 0x7f0e8d765b65 - std::sys_common::backtrace::print::h5f20e41c85e91716 [INFO] [stderr] at /rustc/430feb24a46993e5073c1bb1b39da190d83fa2bf/library/std/src/sys_common/backtrace.rs:36:9 [INFO] [stderr] 8: 0x7f0e8d765b65 - std::panicking::default_hook::{{closure}}::h8d48653392f3b04c [INFO] [stderr] at /rustc/430feb24a46993e5073c1bb1b39da190d83fa2bf/library/std/src/panicking.rs:208:50 [INFO] [stderr] 9: 0x7f0e8d765808 - std::panicking::default_hook::hb3948d1f74b6ff4c [INFO] [stderr] at /rustc/430feb24a46993e5073c1bb1b39da190d83fa2bf/library/std/src/panicking.rs:227:9 [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] [stderr] 10: 0x7f0e8e02cbb8 - rustc_driver::report_ice::h1ddbc5609a6e1f37 [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] 11: 0x7f0e8d766466 - std::panicking::rust_panic_with_hook::h55d23fef0ad751bc [INFO] [stderr] at /rustc/430feb24a46993e5073c1bb1b39da190d83fa2bf/library/std/src/panicking.rs:597:17 [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] [stderr] 12: 0x7f0e8f393084 - std::panicking::begin_panic::{{closure}}::h68f6c6811aaa9f81 [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] [stderr] 13: 0x7f0e8f39303c - std::sys_common::backtrace::__rust_end_short_backtrace::hdb045c8055cfb2b3 [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] [stderr] 14: 0x7f0e8f82822c - std::panicking::begin_panic::h6c903ca63859859e [INFO] [stdout] warning: 5 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] 15: 0x7f0e8f5192ba - rustc_mir::transform::check_consts::qualifs::in_operand::hbf9b19edeb70cc20 [INFO] [stderr] 16: 0x7f0e8f62f6f9 - rustc_mir::transform::promote_consts::Validator::qualif_local::hce2798a9bf1cc93e [INFO] [stderr] 17: 0x7f0e8f63076a - rustc_mir::transform::promote_consts::Validator::validate_local::hc038d4a94b4cf4da [INFO] [stderr] 18: 0x7f0e8f63074f - rustc_mir::transform::promote_consts::Validator::validate_local::hc038d4a94b4cf4da [INFO] [stderr] 19: 0x7f0e8f630426 - rustc_mir::transform::promote_consts::Validator::validate_local::hc038d4a94b4cf4da [INFO] [stderr] 20: 0x7f0e8f6357f5 - rustc_mir::transform::promote_consts::should_suggest_const_in_array_repeat_expressions_attribute::he3f2b2ec464f98eb [INFO] [stderr] 21: 0x7f0e8f3d091a - rustc_mir::borrow_check::type_check::TypeChecker::check_rvalue::h22ab5e4ae71aaa22 [INFO] [stderr] 22: 0x7f0e8f3d4416 - rustc_mir::borrow_check::type_check::TypeChecker::typeck_mir::h3e64fc20f89bec5d [INFO] [stderr] 23: 0x7f0e8f3c775d - rustc_mir::borrow_check::type_check::type_check::hc3a93eb2dc90f323 [INFO] [stderr] 24: 0x7f0e8f6be30a - rustc_mir::borrow_check::nll::compute_regions::h4e04628cd417347a [INFO] [stderr] 25: 0x7f0e8f85e19e - rustc_mir::borrow_check::do_mir_borrowck::h0f2dfa6ed4808883 [INFO] [stderr] 26: 0x7f0e8f2ee2b6 - rustc_infer::infer::InferCtxtBuilder::enter::hdab582007f61da3a [INFO] [stderr] 27: 0x7f0e8f85b1b9 - rustc_mir::borrow_check::mir_borrowck::h6357219ad7113c8d [INFO] [stderr] 28: 0x7f0e8f829f35 - core::ops::function::FnOnce::call_once::h54e1c81aa063f019 [INFO] [stderr] 29: 0x7f0e8e249eae - rustc_middle::ty::query:: for rustc_middle::ty::query::queries::mir_borrowck>::compute::hca7dcb61fb1feb52 [INFO] [stderr] 30: 0x7f0e8e1e2207 - rustc_query_system::dep_graph::graph::DepGraph::with_task_impl::h8162a12ee53fa2ed [INFO] [stderr] 31: 0x7f0e8e24d531 - rustc_data_structures::stack::ensure_sufficient_stack::h83c7288d7360190a [INFO] [stderr] 32: 0x7f0e8e1ae463 - rustc_query_system::query::plumbing::get_query_impl::h2d73e0f270f79a58 [INFO] [stderr] 33: 0x7f0e8e1c4119 - rustc_query_system::query::plumbing::ensure_query_impl::h0cc4fd91c2f8fce8 [INFO] [stderr] 34: 0x7f0e8e27e527 - rustc_interface::passes::analysis::h78326215bfd650a0 [INFO] [stderr] 35: 0x7f0e8e06aa7b - rustc_middle::ty::query:: for rustc_middle::ty::query::queries::analysis>::compute::hf8d4bc54d08537f3 [INFO] [stderr] 36: 0x7f0e8e04b707 - rustc_query_system::dep_graph::graph::DepGraph::with_task_impl::h6d03accb53ed1239 [INFO] [stderr] 37: 0x7f0e8e04821f - rustc_middle::ty::query::plumbing::::start_query::{{closure}}::{{closure}}::{{closure}}::h947bb326d17d8606 [INFO] [stderr] 38: 0x7f0e8dfd5010 - rustc_query_system::query::plumbing::get_query_impl::h448d10ab90370983 [INFO] [stderr] 39: 0x7f0e8e06d9df - rustc_interface::passes::QueryContext::enter::hbf7a36e966e91449 [INFO] [stderr] 40: 0x7f0e8e0496ae - rustc_interface::queries::::enter::h25b522245624a405 [INFO] [stderr] 41: 0x7f0e8e00cdbf - rustc_span::with_source_map::h7455fffe3cd153a4 [INFO] [stderr] 42: 0x7f0e8e044b91 - scoped_tls::ScopedKey::set::h8ae8151712a551fd [INFO] [stderr] 43: 0x7f0e8e04ef55 - std::sys_common::backtrace::__rust_begin_short_backtrace::h26de371bc27662fc [INFO] [stderr] 44: 0x7f0e8dfcdeee - core::ops::function::FnOnce::call_once{{vtable.shim}}::hd5b48297ec15d5af [INFO] [stderr] 45: 0x7f0e8d77546a - as core::ops::function::FnOnce>::call_once::h1ca3bb61791b1789 [INFO] [stderr] at /rustc/430feb24a46993e5073c1bb1b39da190d83fa2bf/library/alloc/src/boxed.rs:1042:9 [INFO] [stderr] 46: 0x7f0e8d77546a - as core::ops::function::FnOnce>::call_once::hd0f9fedfd5cf45f8 [INFO] [stderr] at /rustc/430feb24a46993e5073c1bb1b39da190d83fa2bf/library/alloc/src/boxed.rs:1042:9 [INFO] [stderr] 47: 0x7f0e8d77546a - std::sys::unix::thread::Thread::new::thread_start::h35d2b8d36f210d02 [INFO] [stderr] at /rustc/430feb24a46993e5073c1bb1b39da190d83fa2bf/library/std/src/sys/unix/thread.rs:89:17 [INFO] [stderr] 48: 0x7f0e8d690609 - start_thread [INFO] [stderr] 49: 0x7f0e8d5a4103 - clone [INFO] [stderr] 50: 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 (430feb24a 2020-10-25) 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] [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] [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] error: build failed [INFO] running `Command { std: "docker" "inspect" "9f001a274baf3180c5aab3745b00626d4b8c2e7bc795debd244b72d779c62188", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "9f001a274baf3180c5aab3745b00626d4b8c2e7bc795debd244b72d779c62188", kill_on_drop: false }` [INFO] [stdout] 9f001a274baf3180c5aab3745b00626d4b8c2e7bc795debd244b72d779c62188