[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] testing perlindgren/array_list against 1.45.2 for beta-1.46-1 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fperlindgren%2Farray_list" "/workspace/builds/worker-12/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-12/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/perlindgren/array_list on toolchain 1.45.2 [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.45.2" "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-12/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" "+1.45.2" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+1.45.2" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 9a8fb15cdf871d0f20359c0ecdd7a9e4793be992c53f5864a7b62562936c9e1c [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" "9a8fb15cdf871d0f20359c0ecdd7a9e4793be992c53f5864a7b62562936c9e1c", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "9a8fb15cdf871d0f20359c0ecdd7a9e4793be992c53f5864a7b62562936c9e1c", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "9a8fb15cdf871d0f20359c0ecdd7a9e4793be992c53f5864a7b62562936c9e1c", kill_on_drop: false }` [INFO] [stdout] 9a8fb15cdf871d0f20359c0ecdd7a9e4793be992c53f5864a7b62562936c9e1c [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+1.45.2" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] b89cf256dd3c862068ac20fed72bbae25336589d17461af65d0a37afe8deefbe [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" "b89cf256dd3c862068ac20fed72bbae25336589d17461af65d0a37afe8deefbe", kill_on_drop: false }` [INFO] [stderr] Compiling array_list v0.1.0 (/opt/rustwide/workdir) [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] Finished dev [unoptimized + debuginfo] target(s) in 0.99s [INFO] running `Command { std: "docker" "inspect" "b89cf256dd3c862068ac20fed72bbae25336589d17461af65d0a37afe8deefbe", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "b89cf256dd3c862068ac20fed72bbae25336589d17461af65d0a37afe8deefbe", kill_on_drop: false }` [INFO] [stdout] b89cf256dd3c862068ac20fed72bbae25336589d17461af65d0a37afe8deefbe [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+1.45.2" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] e7030d2ee764ca666fcd573f01f2c6306f41d4f251aa0dfe6f1611abcbb61f18 [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" "e7030d2ee764ca666fcd573f01f2c6306f41d4f251aa0dfe6f1611abcbb61f18", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Compiling array_list v0.1.0 (/opt/rustwide/workdir) [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] [stderr] thread 'rustc' panicked at 'assertion failed: promoted.is_none()', src/librustc_mir/transform/check_consts/qualifs.rs:252:9 [INFO] [stderr] stack backtrace: [INFO] [stdout] warning: 5 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] 0: 0x7f72a2d570e5 - backtrace::backtrace::libunwind::trace::ha215bbf14e328799 [INFO] [stderr] at /cargo/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.46/src/backtrace/libunwind.rs:86 [INFO] [stderr] 1: 0x7f72a2d570e5 - backtrace::backtrace::trace_unsynchronized::h3384b099b135857a [INFO] [stderr] at /cargo/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.46/src/backtrace/mod.rs:66 [INFO] [stderr] 2: 0x7f72a2d570e5 - std::sys_common::backtrace::_print_fmt::hfec93740f7294682 [INFO] [stderr] at src/libstd/sys_common/backtrace.rs:78 [INFO] [stderr] 3: 0x7f72a2d570e5 - ::fmt::h5fe20777f4174074 [INFO] [stderr] at src/libstd/sys_common/backtrace.rs:59 [INFO] [stderr] 4: 0x7f72a2d947fc - core::fmt::write::he14c3177144df275 [INFO] [stderr] at src/libcore/fmt/mod.rs:1076 [INFO] [stderr] 5: 0x7f72a2d497f3 - std::io::Write::write_fmt::h8e26323bfab8bcc5 [INFO] [stderr] at src/libstd/io/mod.rs:1537 [INFO] [stderr] 6: 0x7f72a2d5c100 - std::sys_common::backtrace::_print::h9cfa4c87526ba064 [INFO] [stderr] at src/libstd/sys_common/backtrace.rs:62 [INFO] [stderr] 7: 0x7f72a2d5c100 - std::sys_common::backtrace::print::h94936584848b3272 [INFO] [stderr] at src/libstd/sys_common/backtrace.rs:49 [INFO] [stderr] 8: 0x7f72a2d5c100 - std::panicking::default_hook::{{closure}}::h733b20cc9b496e46 [INFO] [stderr] at src/libstd/panicking.rs:198 [INFO] [stderr] 9: 0x7f72a2d5be4c - std::panicking::default_hook::h556d8cff6c12a651 [INFO] [stderr] at src/libstd/panicking.rs:218 [INFO] [stderr] 10: 0x7f72a3483463 - rustc_driver::report_ice::h6d1c693aceeb9f1d [INFO] [stderr] 11: 0x7f72a2d5c7ac - std::panicking::rust_panic_with_hook::ha0c7ca5b39baa9d5 [INFO] [stderr] at src/libstd/panicking.rs:490 [INFO] [stderr] 12: 0x7f72a48f115e - std::panicking::begin_panic::h35ea577172e3c406 [INFO] [stderr] 13: 0x7f72a4643ff5 - rustc_mir::transform::check_consts::qualifs::in_operand::h1c3ec15d035b1ee1 [INFO] [stderr] 14: 0x7f72a478b959 - rustc_mir::transform::promote_consts::Validator::qualif_local::h95badc0c85526e37 [INFO] [stderr] 15: 0x7f72a478c775 - rustc_mir::transform::promote_consts::Validator::validate_local::h9343f6628d444630 [INFO] [stderr] 16: 0x7f72a478c75a - rustc_mir::transform::promote_consts::Validator::validate_local::h9343f6628d444630 [INFO] [stderr] 17: 0x7f72a478c47f - rustc_mir::transform::promote_consts::Validator::validate_local::h9343f6628d444630 [INFO] [stderr] 18: 0x7f72a4791315 - rustc_mir::transform::promote_consts::should_suggest_const_in_array_repeat_expressions_attribute::h66277ffef3caf78a [INFO] [stderr] 19: 0x7f72a4b05f6d - rustc_mir::borrow_check::type_check::TypeChecker::check_rvalue::h164a9281fd69ce33 [INFO] [stderr] 20: 0x7f72a4b081a7 - rustc_mir::borrow_check::type_check::TypeChecker::typeck_mir::h6a988713c074989b [INFO] [stderr] 21: 0x7f72a4afb24d - rustc_mir::borrow_check::type_check::type_check::h1f4047820b1c6b68 [INFO] [stderr] 22: 0x7f72a483d42d - rustc_mir::borrow_check::nll::compute_regions::hd125fa0ba9bacf56 [INFO] [stderr] 23: 0x7f72a4638714 - rustc_mir::borrow_check::do_mir_borrowck::hb883a24b569e5439 [INFO] [stderr] 24: 0x7f72a479c13a - rustc_infer::infer::InferCtxtBuilder::enter::h5fde385d75b2a250 [INFO] [stderr] 25: 0x7f72a4637b11 - rustc_mir::borrow_check::mir_borrowck::heaa8c03673f1b28e [INFO] [stderr] 26: 0x7f72a36908e2 - rustc_middle::ty::query:: for rustc_middle::ty::query::queries::mir_borrowck>::compute::h2be1cab727bd8bbc [INFO] [stderr] 27: 0x7f72a36deb94 - rustc_query_system::dep_graph::graph::DepGraph::with_task_impl::hfe0929c7a01db913 [INFO] [stderr] 28: 0x7f72a361f6bc - rustc_data_structures::stack::ensure_sufficient_stack::hf0dccdfde3adea70 [INFO] [stderr] 29: 0x7f72a37275b4 - rustc_query_system::query::plumbing::get_query_impl::h303394523fc1f0e4 [INFO] [stderr] 30: 0x7f72a3737f69 - rustc_query_system::query::plumbing::ensure_query_impl::h34844fb5e0b7882c [INFO] [stderr] 31: 0x7f72a3696609 - rustc_session::utils::::time::hf168a73ee52eb459 [INFO] [stderr] 32: 0x7f72a36338f2 - rustc_interface::passes::analysis::he58aedc7d0b09ec0 [INFO] [stderr] 33: 0x7f72a346fe22 - rustc_middle::ty::query:: for rustc_middle::ty::query::queries::analysis>::compute::h33bbd5617bdac899 [INFO] [stderr] 34: 0x7f72a34eb117 - rustc_query_system::dep_graph::graph::DepGraph::with_task_impl::hb13b44333ba84e56 [INFO] [stderr] 35: 0x7f72a34e2cd0 - rustc_query_system::query::plumbing::get_query_impl::h2b9ed27e876954b5 [INFO] [stderr] 36: 0x7f72a3470637 - rustc_middle::ty::context::tls::enter_global::he72c724650567bbd [INFO] [stderr] 37: 0x7f72a3446e04 - rustc_interface::interface::run_compiler_in_existing_thread_pool::h61d7aa90c416ebf0 [INFO] [stderr] 38: 0x7f72a349228f - rustc_ast::attr::with_globals::hec44c216366ac39b [INFO] [stderr] 39: 0x7f72a349746e - std::sys_common::backtrace::__rust_begin_short_backtrace::hf11c1fc94dda916e [INFO] [stderr] 40: 0x7f72a344a94e - core::ops::function::FnOnce::call_once{{vtable.shim}}::heb2d9288c6f6628e [INFO] [stderr] 41: 0x7f72a2d6c10a - as core::ops::function::FnOnce>::call_once::hf311c88f1fadb9b8 [INFO] [stderr] at /rustc/d3fb005a39e62501b8b0b356166e515ae24e2e54/src/liballoc/boxed.rs:1076 [INFO] [stderr] 42: 0x7f72a2d6c10a - as core::ops::function::FnOnce>::call_once::h8cfb7235b81393ef [INFO] [stderr] at /rustc/d3fb005a39e62501b8b0b356166e515ae24e2e54/src/liballoc/boxed.rs:1076 [INFO] [stderr] 43: 0x7f72a2d6c10a - std::sys::unix::thread::Thread::new::thread_start::hf745c8cf29a89648 [INFO] [stderr] at src/libstd/sys/unix/thread.rs:87 [INFO] [stderr] 44: 0x7f72a2cae609 - start_thread [INFO] [stderr] 45: 0x7f72a2bc2103 - __clone [INFO] [stderr] 46: 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/blob/master/CONTRIBUTING.md#bug-reports [INFO] [stderr] [INFO] [stderr] note: rustc 1.45.2 (d3fb005a3 2020-07-31) 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] running `Command { std: "docker" "inspect" "e7030d2ee764ca666fcd573f01f2c6306f41d4f251aa0dfe6f1611abcbb61f18", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "e7030d2ee764ca666fcd573f01f2c6306f41d4f251aa0dfe6f1611abcbb61f18", kill_on_drop: false }` [INFO] [stdout] e7030d2ee764ca666fcd573f01f2c6306f41d4f251aa0dfe6f1611abcbb61f18