[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 try#d990716b6a1fdde1300748828a9c9e79dfd0b898 for pr-74846 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fperlindgren%2Farray_list" "/workspace/builds/worker-0/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-0/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/perlindgren/array_list on toolchain d990716b6a1fdde1300748828a9c9e79dfd0b898 [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+d990716b6a1fdde1300748828a9c9e79dfd0b898" "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-0/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" "+d990716b6a1fdde1300748828a9c9e79dfd0b898" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "+d990716b6a1fdde1300748828a9c9e79dfd0b898" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 7f421d78c521b7c7528318f5131ac7734a64b6b8d5698e8078935c7504297901 [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" "7f421d78c521b7c7528318f5131ac7734a64b6b8d5698e8078935c7504297901", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "7f421d78c521b7c7528318f5131ac7734a64b6b8d5698e8078935c7504297901", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "7f421d78c521b7c7528318f5131ac7734a64b6b8d5698e8078935c7504297901", kill_on_drop: false }` [INFO] [stdout] 7f421d78c521b7c7528318f5131ac7734a64b6b8d5698e8078935c7504297901 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "+d990716b6a1fdde1300748828a9c9e79dfd0b898" "check" "--frozen" "--all" "--all-targets" "--message-format=json", 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] 0179305aaf03d97f67b84bda72708b60c7519a050a89881afe52fd36ac85de6a [INFO] running `Command { std: "docker" "start" "-a" "0179305aaf03d97f67b84bda72708b60c7519a050a89881afe52fd36ac85de6a", 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] [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] [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] 0: 0x7f3ce24004e5 - backtrace::backtrace::libunwind::trace::hdc42e81315d2a69f [INFO] [stderr] at /cargo/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.46/src/backtrace/libunwind.rs:86 [INFO] [stderr] 1: 0x7f3ce24004e5 - backtrace::backtrace::trace_unsynchronized::hc9edcf4d4fb0b42d [INFO] [stderr] at /cargo/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.46/src/backtrace/mod.rs:66 [INFO] [stderr] 2: 0x7f3ce24004e5 - std::sys_common::backtrace::_print_fmt::hb93b171b1042fa52 [INFO] [stderr] at library/std/src/sys_common/backtrace.rs:78 [INFO] [stderr] 3: 0x7f3ce24004e5 - ::fmt::h589f1bf1cf74dd71 [INFO] [stderr] at library/std/src/sys_common/backtrace.rs:59 [INFO] [stderr] 4: 0x7f3ce243c6ec - core::fmt::write::h3a043650ba7bf668 [INFO] [stderr] at library/core/src/fmt/mod.rs:1117 [INFO] [stderr] 5: 0x7f3ce23f2222 - std::io::Write::write_fmt::hbbad3ca30e02a58a [INFO] [stderr] at library/std/src/io/mod.rs:1510 [INFO] [stderr] 6: 0x7f3ce2405380 - std::sys_common::backtrace::_print::h96b2d71887f0b186 [INFO] [stderr] at library/std/src/sys_common/backtrace.rs:62 [INFO] [stderr] 7: 0x7f3ce2405380 - std::sys_common::backtrace::print::h6cd6e92e674a16a4 [INFO] [stderr] at library/std/src/sys_common/backtrace.rs:49 [INFO] [stderr] 8: 0x7f3ce2405380 - std::panicking::default_hook::{{closure}}::h76820e280a7c9f14 [INFO] [stderr] at library/std/src/panicking.rs:198 [INFO] [stderr] 9: 0x7f3ce24050cc - std::panicking::default_hook::h3c589b4200c4e9d0 [INFO] [stderr] at library/std/src/panicking.rs:217 [INFO] [stderr] 10: 0x7f3ce2b98f29 - rustc_driver::report_ice::hfb6cd067d526b9e2 [INFO] [stderr] 11: 0x7f3ce2405af8 - std::panicking::rust_panic_with_hook::h99205632f2cac760 [INFO] [stderr] at library/std/src/panicking.rs:530 [INFO] [stderr] 12: 0x7f3ce3d506ae - std::panicking::begin_panic::h9aa1e6958b77a589 [INFO] [stderr] 13: 0x7f3ce42c19a3 - rustc_mir::transform::check_consts::qualifs::in_operand::ha9ab9dd2416a538f [INFO] [stderr] 14: 0x7f3ce3f6e1c9 - rustc_mir::transform::promote_consts::Validator::qualif_local::h9e0a3c8bd65c08f3 [INFO] [stderr] 15: 0x7f3ce3f6f009 - rustc_mir::transform::promote_consts::Validator::validate_local::h227461731d10eff4 [INFO] [stderr] 16: 0x7f3ce3f6efee - rustc_mir::transform::promote_consts::Validator::validate_local::h227461731d10eff4 [INFO] [stderr] 17: 0x7f3ce3f6ed10 - rustc_mir::transform::promote_consts::Validator::validate_local::h227461731d10eff4 [INFO] [stderr] 18: 0x7f3ce3f73e15 - rustc_mir::transform::promote_consts::should_suggest_const_in_array_repeat_expressions_attribute::hd18d964a38f9849c [INFO] [stderr] 19: 0x7f3ce3e1b7a1 - rustc_mir::borrow_check::type_check::TypeChecker::check_rvalue::h3c4b761dfae617af [INFO] [stderr] 20: 0x7f3ce3e1f1b5 - rustc_mir::borrow_check::type_check::TypeChecker::typeck_mir::h92c74bd5107cd477 [INFO] [stderr] 21: 0x7f3ce3e11870 - rustc_mir::borrow_check::type_check::type_check::h2fc4f70ec0be8bc9 [INFO] [stderr] 22: 0x7f3ce41112dc - rustc_mir::borrow_check::nll::compute_regions::hbbb9f8be2b0574bd [INFO] [stderr] 23: 0x7f3ce3dd3de4 - rustc_mir::borrow_check::do_mir_borrowck::h2b81937ad4c99148 [INFO] [stderr] 24: 0x7f3ce3d3f58f - rustc_infer::infer::InferCtxtBuilder::enter::h64f2bb0d7f36db44 [INFO] [stderr] 25: 0x7f3ce3dd3222 - rustc_mir::borrow_check::mir_borrowck::h74a6bbb6971e28f5 [INFO] [stderr] 26: 0x7f3ce3d9644c - core::ops::function::FnOnce::call_once::hf4a6e0d59ad3500f [INFO] [stderr] 27: 0x7f3ce2d8482e - rustc_middle::ty::query:: for rustc_middle::ty::query::queries::mir_borrowck>::compute::h92b501ae1fa283d6 [INFO] [stderr] 28: 0x7f3ce2dd2117 - rustc_query_system::dep_graph::graph::DepGraph::with_task_impl::hf3dd003b4df9c5a6 [INFO] [stderr] 29: 0x7f3ce2d3e803 - rustc_data_structures::stack::ensure_sufficient_stack::haeee2cc663250ff0 [INFO] [stderr] 30: 0x7f3ce2e0f170 - rustc_query_system::query::plumbing::get_query_impl::ha4cebbaa23e6131a [INFO] [stderr] 31: 0x7f3ce2e1a8c9 - rustc_query_system::query::plumbing::ensure_query_impl::hd4802d0019457cac [INFO] [stderr] 32: 0x7f3ce2d8c839 - rustc_session::utils::::time::hf26f4b5cc4755826 [INFO] [stderr] 33: 0x7f3ce2d39ecb - rustc_interface::passes::analysis::hf8b928ec6cca55fd [INFO] [stderr] 34: 0x7f3ce2b80fbb - rustc_middle::ty::query:: for rustc_middle::ty::query::queries::analysis>::compute::h8a793aff5f181c98 [INFO] [stderr] 35: 0x7f3ce2bf4c57 - rustc_query_system::dep_graph::graph::DepGraph::with_task_impl::hae62605b8f6adc82 [INFO] [stderr] 36: 0x7f3ce2bf7719 - rustc_data_structures::stack::ensure_sufficient_stack::h4ab2297defb08747 [INFO] [stderr] 37: 0x7f3ce2b5c90b - rustc_query_system::query::plumbing::get_query_impl::hb62917c76c59633a [INFO] [stderr] 38: 0x7f3ce2b8185f - rustc_middle::ty::context::tls::enter_global::ha202f7c3a4d9ab67 [INFO] [stderr] 39: 0x7f3ce2b5350a - rustc_interface::queries::::enter::h9f1093ac4ce57102 [INFO] [stderr] 40: 0x7f3ce2bf2ea7 - rustc_span::with_source_map::h63a39e27818f04f8 [INFO] [stderr] 41: 0x7f3ce2b54726 - rustc_interface::interface::create_compiler_and_run::h5b37142f135de911 [INFO] [stderr] 42: 0x7f3ce2b7ed2d - scoped_tls::ScopedKey::set::hded2ad57f79f669f [INFO] [stderr] 43: 0x7f3ce2ba0d42 - std::sys_common::backtrace::__rust_begin_short_backtrace::h5b9f4f3800cb9f35 [INFO] [stderr] 44: 0x7f3ce2b6165e - core::ops::function::FnOnce::call_once{{vtable.shim}}::h1d65e7119903c989 [INFO] [stderr] 45: 0x7f3ce241400a - as core::ops::function::FnOnce>::call_once::h5fb2a84ab207c084 [INFO] [stderr] at /rustc/d990716b6a1fdde1300748828a9c9e79dfd0b898/library/alloc/src/boxed.rs:1074 [INFO] [stderr] 46: 0x7f3ce241400a - as core::ops::function::FnOnce>::call_once::h57349f24407d73d3 [INFO] [stderr] at /rustc/d990716b6a1fdde1300748828a9c9e79dfd0b898/library/alloc/src/boxed.rs:1074 [INFO] [stderr] 47: 0x7f3ce241400a - std::sys::unix::thread::Thread::new::thread_start::h03d6b33ece095db1 [INFO] [stderr] at library/std/src/sys/unix/thread.rs:87 [INFO] [stderr] 48: 0x7f3ce2351609 - start_thread [INFO] [stderr] 49: 0x7f3ce2265103 - __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 1.47.0-nightly (d990716b6 2020-07-28) 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] [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" "0179305aaf03d97f67b84bda72708b60c7519a050a89881afe52fd36ac85de6a", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "0179305aaf03d97f67b84bda72708b60c7519a050a89881afe52fd36ac85de6a", kill_on_drop: false }` [INFO] [stdout] 0179305aaf03d97f67b84bda72708b60c7519a050a89881afe52fd36ac85de6a