[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#a874956d940ecb3ed524b6176a171219ac4787ea for pr-76104 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fperlindgren%2Farray_list" "/workspace/builds/worker-14/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-14/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/perlindgren/array_list on toolchain a874956d940ecb3ed524b6176a171219ac4787ea [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a874956d940ecb3ed524b6176a171219ac4787ea" "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-14/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" "+a874956d940ecb3ed524b6176a171219ac4787ea" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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" "+a874956d940ecb3ed524b6176a171219ac4787ea" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] dc8ad27dc4487f810a587d73a3c16d1948e19e2191644aeb6690141eaf47e911 [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" "dc8ad27dc4487f810a587d73a3c16d1948e19e2191644aeb6690141eaf47e911", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "dc8ad27dc4487f810a587d73a3c16d1948e19e2191644aeb6690141eaf47e911", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "dc8ad27dc4487f810a587d73a3c16d1948e19e2191644aeb6690141eaf47e911", kill_on_drop: false }` [INFO] [stdout] dc8ad27dc4487f810a587d73a3c16d1948e19e2191644aeb6690141eaf47e911 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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" "+a874956d940ecb3ed524b6176a171219ac4787ea" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 3a685134b504e8903f152633469f6e61ff23a3d0265b83c8dec806af209d18cc [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" "3a685134b504e8903f152633469f6e61ff23a3d0265b83c8dec806af209d18cc", 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] [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] 0: 0x7fd54b5dc910 - std::backtrace_rs::backtrace::libunwind::trace::h14e81b0c16b543a7 [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/a874956d940ecb3ed524b6176a171219ac4787ea/library/std/src/../../backtrace/src/backtrace/libunwind.rs:96 [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] 1: 0x7fd54b5dc910 - std::backtrace_rs::backtrace::trace_unsynchronized::hc9e39e172835ff32 [INFO] [stderr] at /rustc/a874956d940ecb3ed524b6176a171219ac4787ea/library/std/src/../../backtrace/src/backtrace/mod.rs:66 [INFO] [stderr] 2: 0x7fd54b5dc910 - std::sys_common::backtrace::_print_fmt::h31994df1c8c77b8f [INFO] [stderr] at /rustc/a874956d940ecb3ed524b6176a171219ac4787ea/library/std/src/sys_common/backtrace.rs:79 [INFO] [stderr] 3: 0x7fd54b5dc910 - ::fmt::he74e98acff43ec99 [INFO] [stderr] at /rustc/a874956d940ecb3ed524b6176a171219ac4787ea/library/std/src/sys_common/backtrace.rs:58 [INFO] [stderr] 4: 0x7fd54b64ab2c - core::fmt::write::h1857a60b204f1b6a [INFO] [stderr] at /rustc/a874956d940ecb3ed524b6176a171219ac4787ea/library/core/src/fmt/mod.rs:1080 [INFO] [stderr] 5: 0x7fd54b5ced07 - std::io::Write::write_fmt::hea6289e6649ff508 [INFO] [stderr] at /rustc/a874956d940ecb3ed524b6176a171219ac4787ea/library/std/src/io/mod.rs:1517 [INFO] [stderr] 6: 0x7fd54b5e1650 - std::sys_common::backtrace::_print::h8cc65937fea24014 [INFO] [stderr] at /rustc/a874956d940ecb3ed524b6176a171219ac4787ea/library/std/src/sys_common/backtrace.rs:61 [INFO] [stderr] 7: 0x7fd54b5e1650 - std::sys_common::backtrace::print::hff6a0ebb96535e34 [INFO] [stderr] at /rustc/a874956d940ecb3ed524b6176a171219ac4787ea/library/std/src/sys_common/backtrace.rs:48 [INFO] [stderr] 8: 0x7fd54b5e1650 - std::panicking::default_hook::{{closure}}::h71b9700c5dda1b1d [INFO] [stderr] at /rustc/a874956d940ecb3ed524b6176a171219ac4787ea/library/std/src/panicking.rs:208 [INFO] [stderr] 9: 0x7fd54b5e139c - std::panicking::default_hook::h0c46e634c06c69b6 [INFO] [stderr] at /rustc/a874956d940ecb3ed524b6176a171219ac4787ea/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: 0x7fd54be73c94 - rustc_driver::report_ice::hc65570d05469648b [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] 11: 0x7fd54b5e1df8 - std::panicking::rust_panic_with_hook::he52576a0c2093334 [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] at /rustc/a874956d940ecb3ed524b6176a171219ac4787ea/library/std/src/panicking.rs:581 [INFO] [stderr] 12: 0x7fd54d6bfed4 - std::panicking::begin_panic::{{closure}}::h59156477f3016261 [INFO] [stdout] warning: 5 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] 13: 0x7fd54d6bfe9c - std::sys_common::backtrace::__rust_end_short_backtrace::h3b1954fe3e6b8a45 [INFO] [stderr] 14: 0x7fd54d55eb7c - std::panicking::begin_panic::hdd7427ec32dc1ea5 [INFO] [stderr] 15: 0x7fd54d313a18 - rustc_mir::transform::check_consts::qualifs::in_operand::h9d610c638eea897b [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] 16: 0x7fd54d491719 - rustc_mir::transform::promote_consts::Validator::qualif_local::h83d9e1608b78f9fe [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] 17: 0x7fd54d49262f - rustc_mir::transform::promote_consts::Validator::validate_local::hf0c5d03208d8b107 [INFO] [stderr] 18: 0x7fd54d492616 - rustc_mir::transform::promote_consts::Validator::validate_local::hf0c5d03208d8b107 [INFO] [stderr] 19: 0x7fd54d49229c - rustc_mir::transform::promote_consts::Validator::validate_local::hf0c5d03208d8b107 [INFO] [stderr] 20: 0x7fd54d496635 - rustc_mir::transform::promote_consts::should_suggest_const_in_array_repeat_expressions_attribute::h75a5c3ed37ccc972 [INFO] [stderr] 21: 0x7fd54d2a946f - rustc_mir::borrow_check::type_check::TypeChecker::check_rvalue::h551c4eb332e639b4 [INFO] [stderr] 22: 0x7fd54d2adb96 - rustc_mir::borrow_check::type_check::TypeChecker::typeck_mir::h045d04564b026de2 [INFO] [stderr] 23: 0x7fd54d29ffdd - rustc_mir::borrow_check::type_check::type_check::h57a7d911bc5c5adf [INFO] [stderr] 24: 0x7fd54d4d94c5 - rustc_mir::borrow_check::nll::compute_regions::hfa227b17e9f7159c [INFO] [stderr] 25: 0x7fd54d68f15c - rustc_mir::borrow_check::do_mir_borrowck::h1bd6fd3f3ac7489f [INFO] [stderr] 26: 0x7fd54d1c18f1 - rustc_infer::infer::InferCtxtBuilder::enter::h3f74d25a8413b37b [INFO] [stderr] 27: 0x7fd54d68c21f - rustc_mir::borrow_check::mir_borrowck::hf97e319f95eb6788 [INFO] [stderr] 28: 0x7fd54d66154c - core::ops::function::FnOnce::call_once::h258b920ff6edd2ea [INFO] [stderr] 29: 0x7fd54c0b56de - rustc_middle::ty::query:: for rustc_middle::ty::query::queries::mir_borrowck>::compute::hd5bff60f00add031 [INFO] [stderr] 30: 0x7fd54c074167 - rustc_query_system::dep_graph::graph::DepGraph::with_task_impl::h642d92518e09ac1d [INFO] [stdout] warning: 5 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] 31: 0x7fd54c106af3 - rustc_data_structures::stack::ensure_sufficient_stack::h02ad73680c800d96 [INFO] [stderr] 32: 0x7fd54c033903 - rustc_query_system::query::plumbing::get_query_impl::h1c0b3fb71c46359a [INFO] [stderr] 33: 0x7fd54c054fa9 - rustc_query_system::query::plumbing::ensure_query_impl::hb5ea97c6a87b07d0 [INFO] [stderr] 34: 0x7fd54c030579 - rustc_session::utils::::time::ha71dbe666521661a [INFO] [stderr] 35: 0x7fd54c0dc462 - rustc_interface::passes::analysis::h7472b7c1734ed09c [INFO] [stderr] 36: 0x7fd54bea1d8b - rustc_middle::ty::query:: for rustc_middle::ty::query::queries::analysis>::compute::h95d55d2524acb284 [INFO] [stderr] 37: 0x7fd54be8e6a7 - rustc_query_system::dep_graph::graph::DepGraph::with_task_impl::hb5cb41bec5d8a4ea [INFO] [stderr] 38: 0x7fd54bea5163 - rustc_data_structures::stack::ensure_sufficient_stack::h19115ccfff9c6a18 [INFO] [stderr] 39: 0x7fd54be30a21 - rustc_query_system::query::plumbing::get_query_impl::h81790529793f94a6 [INFO] [stderr] 40: 0x7fd54bea3124 - rustc_interface::queries::::enter::hd4df13046aae255e [INFO] [stderr] 41: 0x7fd54be5d222 - rustc_span::with_source_map::hc3a651e1eaeadb02 [INFO] [stderr] 42: 0x7fd54bea4b68 - rustc_interface::interface::create_compiler_and_run::h678b63cbae632898 [INFO] [stderr] 43: 0x7fd54be7725a - scoped_tls::ScopedKey::set::h2e53795b3ed57ef1 [INFO] [stderr] 44: 0x7fd54bea6d97 - std::sys_common::backtrace::__rust_begin_short_backtrace::h928558ac3bb7d394 [INFO] [stderr] 45: 0x7fd54be1807e - core::ops::function::FnOnce::call_once{{vtable.shim}}::h26d14ad1b32e2146 [INFO] [stderr] 46: 0x7fd54b5f169a - as core::ops::function::FnOnce>::call_once::h462e787c72080422 [INFO] [stderr] at /rustc/a874956d940ecb3ed524b6176a171219ac4787ea/library/alloc/src/boxed.rs:1042 [INFO] [stderr] 47: 0x7fd54b5f169a - as core::ops::function::FnOnce>::call_once::hd438caf7b24ea9a1 [INFO] [stderr] at /rustc/a874956d940ecb3ed524b6176a171219ac4787ea/library/alloc/src/boxed.rs:1042 [INFO] [stderr] 48: 0x7fd54b5f169a - std::sys::unix::thread::Thread::new::thread_start::h653bd369f002a164 [INFO] [stderr] at /rustc/a874956d940ecb3ed524b6176a171219ac4787ea/library/std/src/sys/unix/thread.rs:87 [INFO] [stderr] 49: 0x7fd54b50e609 - start_thread [INFO] [stderr] 50: 0x7fd54b422103 - 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 1.48.0-nightly (a874956d9 2020-09-15) 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" "3a685134b504e8903f152633469f6e61ff23a3d0265b83c8dec806af209d18cc", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "3a685134b504e8903f152633469f6e61ff23a3d0265b83c8dec806af209d18cc", kill_on_drop: false }` [INFO] [stdout] 3a685134b504e8903f152633469f6e61ff23a3d0265b83c8dec806af209d18cc