[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#119d2a1a98fe87d4ae6cabf12134a0ef2fb95851 for pr-75180 [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 119d2a1a98fe87d4ae6cabf12134a0ef2fb95851 [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+119d2a1a98fe87d4ae6cabf12134a0ef2fb95851" "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" "+119d2a1a98fe87d4ae6cabf12134a0ef2fb95851" "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:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+119d2a1a98fe87d4ae6cabf12134a0ef2fb95851" "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] a90f92e356692b605fcbd6e361cc7a4e3b54d3632633b89915dfd399f5a92f64 [INFO] running `Command { std: "docker" "start" "-a" "a90f92e356692b605fcbd6e361cc7a4e3b54d3632633b89915dfd399f5a92f64", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "a90f92e356692b605fcbd6e361cc7a4e3b54d3632633b89915dfd399f5a92f64", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "a90f92e356692b605fcbd6e361cc7a4e3b54d3632633b89915dfd399f5a92f64", kill_on_drop: false }` [INFO] [stdout] a90f92e356692b605fcbd6e361cc7a4e3b54d3632633b89915dfd399f5a92f64 [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:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+119d2a1a98fe87d4ae6cabf12134a0ef2fb95851" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] ff0a113ffd9a5d2bc17c6ba1bb7bf1101528cc0a42602292597a961baa999854 [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" "ff0a113ffd9a5d2bc17c6ba1bb7bf1101528cc0a42602292597a961baa999854", 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()', src/librustc_mir/transform/check_consts/qualifs.rs:248:9 [INFO] [stderr] stack backtrace: [INFO] [stderr] 0: 0x7fdc39d69d8f - std::backtrace_rs::backtrace::libunwind::trace::h21c0966c343fddd8 [INFO] [stderr] at /rustc/119d2a1a98fe87d4ae6cabf12134a0ef2fb95851/library/std/src/../../backtrace/src/backtrace/libunwind.rs:96 [INFO] [stderr] 1: 0x7fdc39d69d8f - std::backtrace_rs::backtrace::trace_unsynchronized::h62cde0754779ae3a [INFO] [stderr] at /rustc/119d2a1a98fe87d4ae6cabf12134a0ef2fb95851/library/std/src/../../backtrace/src/backtrace/mod.rs:66 [INFO] [stderr] 2: 0x7fdc39d69d8f - std::sys_common::backtrace::_print_fmt::hb2d70198918acf1c [INFO] [stderr] at /rustc/119d2a1a98fe87d4ae6cabf12134a0ef2fb95851/library/std/src/sys_common/backtrace.rs:77 [INFO] [stderr] 3: 0x7fdc39d69d8f - ::fmt::h5a9d4ddd4d99b877 [INFO] [stderr] at /rustc/119d2a1a98fe87d4ae6cabf12134a0ef2fb95851/library/std/src/sys_common/backtrace.rs:58 [INFO] [stderr] 4: 0x7fdc39dda27c - core::fmt::write::h3a043650ba7bf668 [INFO] [stderr] at /rustc/119d2a1a98fe87d4ae6cabf12134a0ef2fb95851/library/core/src/fmt/mod.rs:1117 [INFO] [stderr] 5: 0x7fdc39d5c585 - std::io::Write::write_fmt::h2dbf1bb0d9f42142 [INFO] [stderr] at /rustc/119d2a1a98fe87d4ae6cabf12134a0ef2fb95851/library/std/src/io/mod.rs:1510 [INFO] [stderr] 6: 0x7fdc39d6ead0 - std::sys_common::backtrace::_print::h1091565a54a3c462 [INFO] [stderr] at /rustc/119d2a1a98fe87d4ae6cabf12134a0ef2fb95851/library/std/src/sys_common/backtrace.rs:61 [INFO] [stderr] 7: 0x7fdc39d6ead0 - std::sys_common::backtrace::print::hc9759e13a502cda2 [INFO] [stderr] at /rustc/119d2a1a98fe87d4ae6cabf12134a0ef2fb95851/library/std/src/sys_common/backtrace.rs:48 [INFO] [stderr] 8: 0x7fdc39d6ead0 - std::panicking::default_hook::{{closure}}::hd35b8516a1d88160 [INFO] [stderr] at /rustc/119d2a1a98fe87d4ae6cabf12134a0ef2fb95851/library/std/src/panicking.rs:198 [INFO] [stderr] 9: 0x7fdc39d6e81c - std::panicking::default_hook::h0dcf88ad4d72ec5e [INFO] [stderr] at /rustc/119d2a1a98fe87d4ae6cabf12134a0ef2fb95851/library/std/src/panicking.rs:217 [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: 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: 5 warnings emitted [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: 0x7fdc3a5a2729 - rustc_driver::report_ice::h3626b51ef58e78c7 [INFO] [stderr] 11: 0x7fdc39d6f248 - std::panicking::rust_panic_with_hook::h81c308f7accbe523 [INFO] [stderr] at /rustc/119d2a1a98fe87d4ae6cabf12134a0ef2fb95851/library/std/src/panicking.rs:530 [INFO] [stderr] 12: 0x7fdc3bb4e78e - std::panicking::begin_panic::hae74db7f5d5c3111 [INFO] [stderr] 13: 0x7fdc3b957b03 - rustc_mir::transform::check_consts::qualifs::in_operand::h547462dc425024fe [INFO] [stderr] 14: 0x7fdc3ba99ee9 - rustc_mir::transform::promote_consts::Validator::qualif_local::hb9cf61ee90b31c49 [INFO] [stderr] 15: 0x7fdc3ba9adec - rustc_mir::transform::promote_consts::Validator::validate_local::hadb0b989cb0b6966 [INFO] [stderr] 16: 0x7fdc3ba9add1 - rustc_mir::transform::promote_consts::Validator::validate_local::hadb0b989cb0b6966 [INFO] [stderr] 17: 0x7fdc3ba9aa2d - rustc_mir::transform::promote_consts::Validator::validate_local::hadb0b989cb0b6966 [INFO] [stderr] 18: 0x7fdc3ba9fd25 - rustc_mir::transform::promote_consts::should_suggest_const_in_array_repeat_expressions_attribute::h323fa4d72c4e1b37 [INFO] [stderr] 19: 0x7fdc3bde4e0c - rustc_mir::borrow_check::type_check::TypeChecker::check_rvalue::h4779125da64e3e44 [INFO] [stderr] 20: 0x7fdc3bde8110 - rustc_mir::borrow_check::type_check::TypeChecker::typeck_mir::hf4ad4dc3a2f259d5 [INFO] [stderr] 21: 0x7fdc3bddab6d - rustc_mir::borrow_check::type_check::type_check::had0ac5e491a26f68 [INFO] [stderr] 22: 0x7fdc3b8a67d8 - rustc_mir::borrow_check::nll::compute_regions::h14999441944c7746 [INFO] [stderr] 23: 0x7fdc3bd17c08 - rustc_mir::borrow_check::do_mir_borrowck::h0309e13c700c46b3 [INFO] [stderr] 24: 0x7fdc3ba6971f - rustc_infer::infer::InferCtxtBuilder::enter::hbeec03a4a3e16d52 [INFO] [stderr] 25: 0x7fdc3bd17022 - rustc_mir::borrow_check::mir_borrowck::h6386713a449eb9c3 [INFO] [stderr] 26: 0x7fdc3bce54bc - core::ops::function::FnOnce::call_once::h97ebb9a310ebb772 [INFO] [stderr] 27: 0x7fdc3a8ffc1e - rustc_middle::ty::query:: for rustc_middle::ty::query::queries::mir_borrowck>::compute::hdcf883a49fd01c79 [INFO] [stderr] 28: 0x7fdc3a90a947 - rustc_query_system::dep_graph::graph::DepGraph::with_task_impl::hae37f62964649595 [INFO] [stderr] 29: 0x7fdc3a8758d3 - rustc_data_structures::stack::ensure_sufficient_stack::h358411213a02d440 [INFO] [stderr] 30: 0x7fdc3a8c1cde - rustc_query_system::query::plumbing::get_query_impl::h37501e33e050fdd2 [INFO] [stderr] 31: 0x7fdc3a8d18e9 - rustc_query_system::query::plumbing::ensure_query_impl::h494135afd307168c [INFO] [stderr] 32: 0x7fdc3a903d89 - rustc_session::utils::::time::hcd2531b472e14177 [INFO] [stderr] 33: 0x7fdc3a96499b - rustc_interface::passes::analysis::hdae79c37b5f20823 [INFO] [stderr] 34: 0x7fdc3a61026b - rustc_middle::ty::query:: for rustc_middle::ty::query::queries::analysis>::compute::h106b84e5de51995c [INFO] [stderr] 35: 0x7fdc3a5eb847 - rustc_query_system::dep_graph::graph::DepGraph::with_task_impl::h875a99cc0dd4be62 [INFO] [stderr] 36: 0x7fdc3a58d263 - rustc_data_structures::stack::ensure_sufficient_stack::hefb7b9aec2671b43 [INFO] [stderr] 37: 0x7fdc3a5d6b50 - rustc_query_system::query::plumbing::get_query_impl::h812ca2129f1b6a9d [INFO] [stderr] 38: 0x7fdc3a610cab - rustc_interface::passes::QueryContext::enter::h7449c27d11da0b91 [INFO] [stderr] 39: 0x7fdc3a5e9123 - rustc_interface::queries::::enter::ha13b7214f6d975ce [INFO] [stderr] 40: 0x7fdc3a571fe7 - rustc_span::with_source_map::h273d8da6fb210cd8 [INFO] [stderr] 41: 0x7fdc3a5ea30a - rustc_interface::interface::create_compiler_and_run::h5d88121b3597b034 [INFO] [stderr] 42: 0x7fdc3a586e3e - scoped_tls::ScopedKey::set::h837aff7fb666ecbc [INFO] [stderr] 43: 0x7fdc3a5b13b4 - rustc_ast::attr::with_session_globals::he6733e00b7a88413 [INFO] [stderr] 44: 0x7fdc3a5eedb1 - std::sys_common::backtrace::__rust_begin_short_backtrace::h952904779ff16c85 [INFO] [stderr] 45: 0x7fdc3a58e5be - core::ops::function::FnOnce::call_once{{vtable.shim}}::h034a590dfec84d02 [INFO] [stderr] 46: 0x7fdc39d7ff3a - as core::ops::function::FnOnce>::call_once::he3b18fd544fbb0d4 [INFO] [stderr] at /rustc/119d2a1a98fe87d4ae6cabf12134a0ef2fb95851/library/alloc/src/boxed.rs:1025 [INFO] [stderr] 47: 0x7fdc39d7ff3a - as core::ops::function::FnOnce>::call_once::h6019d38ebe8d3c58 [INFO] [stderr] at /rustc/119d2a1a98fe87d4ae6cabf12134a0ef2fb95851/library/alloc/src/boxed.rs:1025 [INFO] [stderr] 48: 0x7fdc39d7ff3a - std::sys::unix::thread::Thread::new::thread_start::hb881d64bc8cd4183 [INFO] [stderr] at /rustc/119d2a1a98fe87d4ae6cabf12134a0ef2fb95851/library/std/src/sys/unix/thread.rs:87 [INFO] [stderr] 49: 0x7fdc39c9d609 - start_thread [INFO] [stderr] 50: 0x7fdc39bb1103 - 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 1.47.0-nightly (119d2a1a9 2020-08-05) 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" "ff0a113ffd9a5d2bc17c6ba1bb7bf1101528cc0a42602292597a961baa999854", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "ff0a113ffd9a5d2bc17c6ba1bb7bf1101528cc0a42602292597a961baa999854", kill_on_drop: false }` [INFO] [stdout] ff0a113ffd9a5d2bc17c6ba1bb7bf1101528cc0a42602292597a961baa999854