[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#d62d3f7fa9a91d933213cc10e20e740608983f64 for pr-77015 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fperlindgren%2Farray_list" "/workspace/builds/worker-1/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-1/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/perlindgren/array_list on toolchain d62d3f7fa9a91d933213cc10e20e740608983f64 [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+d62d3f7fa9a91d933213cc10e20e740608983f64" "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-1/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" "+d62d3f7fa9a91d933213cc10e20e740608983f64" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "+d62d3f7fa9a91d933213cc10e20e740608983f64" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] c612e3151512f6cd4b8be7667b8218a3ce6a931d380212f70e2314cd24bd361f [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" "c612e3151512f6cd4b8be7667b8218a3ce6a931d380212f70e2314cd24bd361f", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "c612e3151512f6cd4b8be7667b8218a3ce6a931d380212f70e2314cd24bd361f", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "c612e3151512f6cd4b8be7667b8218a3ce6a931d380212f70e2314cd24bd361f", kill_on_drop: false }` [INFO] [stdout] c612e3151512f6cd4b8be7667b8218a3ce6a931d380212f70e2314cd24bd361f [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "+d62d3f7fa9a91d933213cc10e20e740608983f64" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] fed78856d64c03b141483985e6c7e7f7154fdc148a0d0fa3548bca164381231a [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" "fed78856d64c03b141483985e6c7e7f7154fdc148a0d0fa3548bca164381231a", 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: 0x7fe5bfe9b6c0 - std::backtrace_rs::backtrace::libunwind::trace::he85dfb3ae4206056 [INFO] [stderr] at /rustc/d62d3f7fa9a91d933213cc10e20e740608983f64/library/std/src/../../backtrace/src/backtrace/libunwind.rs:96 [INFO] [stderr] 1: 0x7fe5bfe9b6c0 - std::backtrace_rs::backtrace::trace_unsynchronized::h1ad28094d7b00c21 [INFO] [stderr] at /rustc/d62d3f7fa9a91d933213cc10e20e740608983f64/library/std/src/../../backtrace/src/backtrace/mod.rs:66 [INFO] [stderr] 2: 0x7fe5bfe9b6c0 - std::sys_common::backtrace::_print_fmt::h901b54610713cd21 [INFO] [stderr] at /rustc/d62d3f7fa9a91d933213cc10e20e740608983f64/library/std/src/sys_common/backtrace.rs:79 [INFO] [stderr] 3: 0x7fe5bfe9b6c0 - ::fmt::hb0ad78ee1571f7e0 [INFO] [stderr] at /rustc/d62d3f7fa9a91d933213cc10e20e740608983f64/library/std/src/sys_common/backtrace.rs:58 [INFO] [stderr] 4: 0x7fe5bff0965c - core::fmt::write::h1857a60b204f1b6a [INFO] [stderr] at /rustc/d62d3f7fa9a91d933213cc10e20e740608983f64/library/core/src/fmt/mod.rs:1080 [INFO] [stderr] 5: 0x7fe5bfe8d9e2 - std::io::Write::write_fmt::hf7b7d7b243f84a36 [INFO] [stderr] at /rustc/d62d3f7fa9a91d933213cc10e20e740608983f64/library/std/src/io/mod.rs:1516 [INFO] [stderr] 6: 0x7fe5bfea022d - std::sys_common::backtrace::_print::hd093978a5287b8ff [INFO] [stderr] at /rustc/d62d3f7fa9a91d933213cc10e20e740608983f64/library/std/src/sys_common/backtrace.rs:61 [INFO] [stderr] 7: 0x7fe5bfea022d - std::sys_common::backtrace::print::h20f46787581d56d7 [INFO] [stderr] at /rustc/d62d3f7fa9a91d933213cc10e20e740608983f64/library/std/src/sys_common/backtrace.rs:48 [INFO] [stderr] 8: 0x7fe5bfea022d - std::panicking::default_hook::{{closure}}::h486cbb4b82ffc357 [INFO] [stderr] at /rustc/d62d3f7fa9a91d933213cc10e20e740608983f64/library/std/src/panicking.rs:208 [INFO] [stderr] 9: 0x7fe5bfe9fed8 - std::panicking::default_hook::h4190c9e3edd4d591 [INFO] [stderr] at /rustc/d62d3f7fa9a91d933213cc10e20e740608983f64/library/std/src/panicking.rs:227 [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] [stderr] 10: 0x7fe5c0728004 - rustc_driver::report_ice::hf8c66d9361a1117a [INFO] [stderr] 11: 0x7fe5bfea0a76 - std::panicking::rust_panic_with_hook::h72e78719cdda225c [INFO] [stderr] at /rustc/d62d3f7fa9a91d933213cc10e20e740608983f64/library/std/src/panicking.rs:581 [INFO] [stderr] 12: 0x7fe5c1ac9494 - std::panicking::begin_panic::{{closure}}::h56a007d899772d0e [INFO] [stderr] 13: 0x7fe5c1ac92bc - std::sys_common::backtrace::__rust_end_short_backtrace::hcde8bf17e7fa3159 [INFO] [stderr] 14: 0x7fe5c1ea180c - std::panicking::begin_panic::he1ad063aed9e7898 [INFO] [stderr] 15: 0x7fe5c1b70aad - rustc_mir::transform::check_consts::qualifs::in_operand::he7277c85c4881d39 [INFO] [stderr] 16: 0x7fe5c1aa5139 - rustc_mir::transform::promote_consts::Validator::qualif_local::h21929bed09a6416b [INFO] [stderr] 17: 0x7fe5c1aa6251 - rustc_mir::transform::promote_consts::Validator::validate_local::h8ca5cdfb0923ad5b [INFO] [stderr] 18: 0x7fe5c1aa6236 - rustc_mir::transform::promote_consts::Validator::validate_local::h8ca5cdfb0923ad5b [INFO] [stderr] 19: 0x7fe5c1aa5ede - rustc_mir::transform::promote_consts::Validator::validate_local::h8ca5cdfb0923ad5b [INFO] [stderr] 20: 0x7fe5c1aab255 - rustc_mir::transform::promote_consts::should_suggest_const_in_array_repeat_expressions_attribute::h04be3994e34bebdd [INFO] [stderr] 21: 0x7fe5c1ae20a1 - rustc_mir::borrow_check::type_check::TypeChecker::check_rvalue::h648c650a34861ab0 [INFO] [stderr] 22: 0x7fe5c1ae5bb9 - rustc_mir::borrow_check::type_check::TypeChecker::typeck_mir::hdb36015452c2b4fb [INFO] [stderr] 23: 0x7fe5c1ad8daf - rustc_mir::borrow_check::type_check::type_check::ha7f7ab38aeb25595 [INFO] [stderr] 24: 0x7fe5c1d6b68a - rustc_mir::borrow_check::nll::compute_regions::h237b116f72c94d8e [INFO] [stderr] 25: 0x7fe5c1f1afec - rustc_mir::borrow_check::do_mir_borrowck::h4afe9e93c4963d32 [INFO] [stderr] 26: 0x7fe5c1a2fe11 - rustc_infer::infer::InferCtxtBuilder::enter::h97a70b2bb13d5965 [INFO] [stderr] 27: 0x7fe5c1f1801f - rustc_mir::borrow_check::mir_borrowck::h5448b9d0c17a9a49 [INFO] [stderr] 28: 0x7fe5c1eeae15 - core::ops::function::FnOnce::call_once::hd3ad80c3b644e84f [INFO] [stderr] 29: 0x7fe5c097fc05 - rustc_middle::ty::query:: for rustc_middle::ty::query::queries::mir_borrowck>::compute::h3817dba679194807 [INFO] [stderr] 30: 0x7fe5c090f147 - rustc_query_system::dep_graph::graph::DepGraph::with_task_impl::hc13bb3f047746749 [INFO] [stderr] 31: 0x7fe5c0982661 - rustc_data_structures::stack::ensure_sufficient_stack::hb453b30be36c5dd9 [INFO] [stderr] 32: 0x7fe5c08fa853 - rustc_query_system::query::plumbing::get_query_impl::hb877097d91311d15 [INFO] [stderr] 33: 0x7fe5c0904a59 - rustc_query_system::query::plumbing::ensure_query_impl::h469ec85d77f64561 [INFO] [stderr] 34: 0x7fe5c095ea19 - rustc_session::utils::::time::hd1ba243f73837a84 [INFO] [stderr] 35: 0x7fe5c09a62ab - rustc_interface::passes::analysis::hb167ef31f20d7de5 [INFO] [stderr] 36: 0x7fe5c07a1902 - rustc_middle::ty::query:: for rustc_middle::ty::query::queries::analysis>::compute::h32ce79c998a0ef04 [INFO] [stderr] 37: 0x7fe5c0765da7 - rustc_query_system::dep_graph::graph::DepGraph::with_task_impl::hd9654de58368a1af [INFO] [stderr] 38: 0x7fe5c0776800 - rustc_data_structures::stack::ensure_sufficient_stack::h613a238b26985353 [INFO] [stderr] 39: 0x7fe5c070d8e8 - rustc_query_system::query::plumbing::get_query_impl::ha1e856056aed9f00 [INFO] [stderr] 40: 0x7fe5c07a278f - rustc_interface::passes::QueryContext::enter::hce4a000d5256de44 [INFO] [stderr] 41: 0x7fe5c0772ef5 - rustc_interface::queries::::enter::h18c853e028e6c9f9 [INFO] [stderr] 42: 0x7fe5c0705b87 - rustc_span::with_source_map::hc6e7fae929044d02 [INFO] [stderr] 43: 0x7fe5c07750f8 - rustc_interface::interface::create_compiler_and_run::hbe36d1862bd2f567 [INFO] [stderr] 44: 0x7fe5c075a2ba - scoped_tls::ScopedKey::set::h0af3b28009000928 [INFO] [stderr] 45: 0x7fe5c0777513 - std::sys_common::backtrace::__rust_begin_short_backtrace::h9cdb1bad21cfd306 [INFO] [stderr] 46: 0x7fe5c06f2cae - core::ops::function::FnOnce::call_once{{vtable.shim}}::h22e8ded7ea879742 [INFO] [stderr] 47: 0x7fe5bfeaf7ba - as core::ops::function::FnOnce>::call_once::h1080dfe0ef616bdf [INFO] [stderr] at /rustc/d62d3f7fa9a91d933213cc10e20e740608983f64/library/alloc/src/boxed.rs:1042 [INFO] [stderr] 48: 0x7fe5bfeaf7ba - as core::ops::function::FnOnce>::call_once::hd2747e1f2d5cec32 [INFO] [stderr] at /rustc/d62d3f7fa9a91d933213cc10e20e740608983f64/library/alloc/src/boxed.rs:1042 [INFO] [stderr] 49: 0x7fe5bfeaf7ba - std::sys::unix::thread::Thread::new::thread_start::hd0f336b4ef6808a7 [INFO] [stderr] at /rustc/d62d3f7fa9a91d933213cc10e20e740608983f64/library/std/src/sys/unix/thread.rs:87 [INFO] [stderr] 50: 0x7fe5bfdcc609 - start_thread [INFO] [stderr] 51: 0x7fe5bfced103 - clone [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] 52: 0x0 - [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] [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-nightly (d62d3f7fa 2020-09-28) 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: 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: 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] [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" "fed78856d64c03b141483985e6c7e7f7154fdc148a0d0fa3548bca164381231a", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "fed78856d64c03b141483985e6c7e7f7154fdc148a0d0fa3548bca164381231a", kill_on_drop: false }` [INFO] [stdout] fed78856d64c03b141483985e6c7e7f7154fdc148a0d0fa3548bca164381231a