[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] eea9e09cb47cdf327fbb6344d11a8c710b5a0149 [INFO] checking perlindgren/array_list against try#9cfe725f0995b018340c519db1b2f3cf8a7e0631 for pr-81174 [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 9cfe725f0995b018340c519db1b2f3cf8a7e0631 [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+9cfe725f0995b018340c519db1b2f3cf8a7e0631" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", 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" "+9cfe725f0995b018340c519db1b2f3cf8a7e0631" "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@sha256:21f1ed92105a0ef9b0d27ad8bdeb7f36f9f01ac17fffe3a3f3dc5241fc25d8f4" "/opt/rustwide/cargo-home/bin/cargo" "+9cfe725f0995b018340c519db1b2f3cf8a7e0631" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 64014fbf481195ffa5c9ae5ab5c273f4a63e17f5bd0bfe21e95b657e0ee56d6b [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" "64014fbf481195ffa5c9ae5ab5c273f4a63e17f5bd0bfe21e95b657e0ee56d6b", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "64014fbf481195ffa5c9ae5ab5c273f4a63e17f5bd0bfe21e95b657e0ee56d6b", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "64014fbf481195ffa5c9ae5ab5c273f4a63e17f5bd0bfe21e95b657e0ee56d6b", kill_on_drop: false }` [INFO] [stdout] 64014fbf481195ffa5c9ae5ab5c273f4a63e17f5bd0bfe21e95b657e0ee56d6b [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@sha256:21f1ed92105a0ef9b0d27ad8bdeb7f36f9f01ac17fffe3a3f3dc5241fc25d8f4" "/opt/rustwide/cargo-home/bin/cargo" "+9cfe725f0995b018340c519db1b2f3cf8a7e0631" "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] a7437f3c888fbc2f1bfc13de6b929e515fbe173d3caf702ff9df1fe1192fdbd6 [INFO] running `Command { std: "docker" "start" "-a" "a7437f3c888fbc2f1bfc13de6b929e515fbe173d3caf702ff9df1fe1192fdbd6", 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:250:9 [INFO] [stderr] stack backtrace: [INFO] [stdout] warning: associated function is never used: `free` [INFO] [stdout] --> src/main.rs:50:8 [INFO] [stdout] | [INFO] [stdout] 50 | 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:82:8 [INFO] [stdout] | [INFO] [stdout] 82 | 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:98:8 [INFO] [stdout] | [INFO] [stdout] 98 | fn pop(&mut self) -> T { [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] 0: 0x7f9e34b2c897 - std::backtrace_rs::backtrace::libunwind::trace::h8bc78f7bc1f75bdb [INFO] [stderr] at /rustc/9cfe725f0995b018340c519db1b2f3cf8a7e0631/library/std/src/../../backtrace/src/backtrace/libunwind.rs:90:5 [INFO] [stderr] 1: 0x7f9e34b2c897 - std::backtrace_rs::backtrace::trace_unsynchronized::ha4c961c9576f95ba [INFO] [stderr] at /rustc/9cfe725f0995b018340c519db1b2f3cf8a7e0631/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5 [INFO] [stderr] 2: 0x7f9e34b2c897 - std::sys_common::backtrace::_print_fmt::hc20cfdc233d6eb02 [INFO] [stderr] at /rustc/9cfe725f0995b018340c519db1b2f3cf8a7e0631/library/std/src/sys_common/backtrace.rs:67:5 [INFO] [stderr] 3: 0x7f9e34b2c897 - ::fmt::h04bea14549780a0f [INFO] [stderr] at /rustc/9cfe725f0995b018340c519db1b2f3cf8a7e0631/library/std/src/sys_common/backtrace.rs:46:22 [INFO] [stderr] 4: 0x7f9e34b9d59c - core::fmt::write::h3868db8542c90941 [INFO] [stderr] at /rustc/9cfe725f0995b018340c519db1b2f3cf8a7e0631/library/core/src/fmt/mod.rs:1096:17 [INFO] [stderr] 5: 0x7f9e34b1e292 - std::io::Write::write_fmt::h55dd75636eef6a5c [INFO] [stderr] at /rustc/9cfe725f0995b018340c519db1b2f3cf8a7e0631/library/std/src/io/mod.rs:1568:15 [INFO] [stderr] 6: 0x7f9e34b30565 - std::sys_common::backtrace::_print::h6439e8525077c7da [INFO] [stderr] at /rustc/9cfe725f0995b018340c519db1b2f3cf8a7e0631/library/std/src/sys_common/backtrace.rs:49:5 [INFO] [stderr] 7: 0x7f9e34b30565 - std::sys_common::backtrace::print::h02b685f728ce3931 [INFO] [stderr] at /rustc/9cfe725f0995b018340c519db1b2f3cf8a7e0631/library/std/src/sys_common/backtrace.rs:36:9 [INFO] [stderr] 8: 0x7f9e34b30565 - std::panicking::default_hook::{{closure}}::h7c29625065fafae1 [INFO] [stderr] at /rustc/9cfe725f0995b018340c519db1b2f3cf8a7e0631/library/std/src/panicking.rs:208:50 [INFO] [stderr] 9: 0x7f9e34b300c3 - std::panicking::default_hook::hba441710bb71f4d5 [INFO] [stderr] at /rustc/9cfe725f0995b018340c519db1b2f3cf8a7e0631/library/std/src/panicking.rs:225:9 [INFO] [stdout] warning: unused `std::result::Result` that must be used [INFO] [stdout] --> src/main.rs:121:9 [INFO] [stdout] | [INFO] [stdout] 121 | 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:124:13 [INFO] [stdout] | [INFO] [stdout] 124 | 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:50:8 [INFO] [stdout] | [INFO] [stdout] 50 | 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:82:8 [INFO] [stdout] | [INFO] [stdout] 82 | 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:98:8 [INFO] [stdout] | [INFO] [stdout] 98 | fn pop(&mut self) -> T { [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] 10: 0x7f9e353779eb - rustc_driver::report_ice::hc59d1bae4ec316c8 [INFO] [stderr] 11: 0x7f9e34b30e66 - std::panicking::rust_panic_with_hook::ha936eb00e51bc4d9 [INFO] [stderr] at /rustc/9cfe725f0995b018340c519db1b2f3cf8a7e0631/library/std/src/panicking.rs:595:17 [INFO] [stderr] 12: 0x7f9e34b30957 - std::panicking::begin_panic_handler::{{closure}}::hcd15140e0238536e [INFO] [stderr] at /rustc/9cfe725f0995b018340c519db1b2f3cf8a7e0631/library/std/src/panicking.rs:495:13 [INFO] [stderr] 13: 0x7f9e34b2cd5c - std::sys_common::backtrace::__rust_end_short_backtrace::hb13a021bb64823a1 [INFO] [stderr] at /rustc/9cfe725f0995b018340c519db1b2f3cf8a7e0631/library/std/src/sys_common/backtrace.rs:141:18 [INFO] [stderr] 14: 0x7f9e34b308e9 - rust_begin_unwind [INFO] [stderr] at /rustc/9cfe725f0995b018340c519db1b2f3cf8a7e0631/library/std/src/panicking.rs:493:5 [INFO] [stderr] 15: 0x7f9e34b999e1 - core::panicking::panic_fmt::h20225113c4a2f8fd [INFO] [stderr] at /rustc/9cfe725f0995b018340c519db1b2f3cf8a7e0631/library/core/src/panicking.rs:92:14 [INFO] [stderr] 16: 0x7f9e34b9992d - core::panicking::panic::h35b77276aa4b0c12 [INFO] [stderr] at /rustc/9cfe725f0995b018340c519db1b2f3cf8a7e0631/library/core/src/panicking.rs:50:5 [INFO] [stderr] 17: 0x7f9e37152744 - rustc_mir::transform::check_consts::qualifs::in_operand::h4ca9d7cd70a12649 [INFO] [stderr] 18: 0x7f9e37107589 - rustc_mir::transform::promote_consts::Validator::qualif_local::he57f570c8e151122 [INFO] [stderr] 19: 0x7f9e37108faa - rustc_mir::transform::promote_consts::Validator::validate_ref::h2f7f59b2d1e8130f [INFO] [stdout] warning: 5 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] 20: 0x7f9e37107bd4 - rustc_mir::transform::promote_consts::Validator::validate_local::h52bde8006cfe6089 [INFO] [stderr] 21: 0x7f9e3710897d - rustc_mir::transform::promote_consts::Validator::validate_place::h13bf23b641948f50 [INFO] [stderr] 22: 0x7f9e37107bbb - rustc_mir::transform::promote_consts::Validator::validate_local::h52bde8006cfe6089 [INFO] [stderr] 23: 0x7f9e3710897d - rustc_mir::transform::promote_consts::Validator::validate_place::h13bf23b641948f50 [INFO] [stderr] 24: 0x7f9e37107ac4 - rustc_mir::transform::promote_consts::Validator::validate_local::h52bde8006cfe6089 [INFO] [stderr] 25: 0x7f9e3710897d - rustc_mir::transform::promote_consts::Validator::validate_place::h13bf23b641948f50 [INFO] [stderr] 26: 0x7f9e35c459ee - rustc_mir::transform::promote_consts::should_suggest_const_in_array_repeat_expressions_attribute::hc256cc417bcbb1b1 [INFO] [stderr] 27: 0x7f9e3713a20b - rustc_mir::borrow_check::type_check::TypeChecker::check_rvalue::h45aaebee9a76387d [INFO] [stderr] 28: 0x7f9e3713f5d7 - rustc_mir::borrow_check::type_check::TypeChecker::typeck_mir::h210cb247162bf3cf [INFO] [stderr] 29: 0x7f9e3712f67a - rustc_mir::borrow_check::type_check::type_check::h63a400c68df8a8ae [INFO] [stderr] 30: 0x7f9e371b4d36 - rustc_mir::borrow_check::nll::compute_regions::hb687dcb88e466077 [INFO] [stderr] 31: 0x7f9e372888ad - rustc_mir::borrow_check::do_mir_borrowck::h623550e55b09c321 [INFO] [stderr] 32: 0x7f9e370f0663 - rustc_infer::infer::InferCtxtBuilder::enter::hdac314d0f1b6b895 [INFO] [stderr] 33: 0x7f9e37287177 - rustc_mir::borrow_check::mir_borrowck::h2f0aac4f3bcbbf2e [INFO] [stderr] 34: 0x7f9e37270bf2 - core::ops::function::FnOnce::call_once::ha5b1e637807ba9b5 [INFO] [stderr] 35: 0x7f9e36cff77c - rustc_middle::ty::query:: for rustc_middle::ty::query::queries::mir_borrowck>::compute::h597988e32ccbc282 [INFO] [stderr] 36: 0x7f9e36ce43d3 - rustc_query_system::dep_graph::graph::DepGraph::with_task_impl::he676fe12310b8e73 [INFO] [stderr] 37: 0x7f9e36cfc4a7 - rustc_middle::ty::query::plumbing::::start_query::{{closure}}::{{closure}}::{{closure}}::hb92adbda480ca675 [INFO] [stderr] 38: 0x7f9e36d087b5 - rustc_query_system::query::plumbing::force_query_with_job::hf797f8941e9b0939 [INFO] [stderr] 39: 0x7f9e36d01f75 - rustc_query_system::query::plumbing::get_query_impl::h293810cbe60756cd [INFO] [stderr] 40: 0x7f9e36d07d87 - rustc_query_system::query::plumbing::ensure_query_impl::hee129d8792c69541 [INFO] [stderr] 41: 0x7f9e36cedf56 - rustc_session::utils::::time::hf5be880385560fad [INFO] [stderr] 42: 0x7f9e377823bd - rustc_interface::passes::analysis::ha7995a36835b3af6 [INFO] [stderr] 43: 0x7f9e3772a259 - rustc_middle::ty::query:: for rustc_middle::ty::query::queries::analysis>::compute::h1de9780ce05aea98 [INFO] [stderr] 44: 0x7f9e3771e74e - rustc_query_system::dep_graph::graph::DepGraph::with_task_impl::ha730324a5f9af562 [INFO] [stderr] 45: 0x7f9e37726711 - rustc_data_structures::stack::ensure_sufficient_stack::h45edb3c377f5110a [INFO] [stderr] 46: 0x7f9e37705c26 - rustc_query_system::query::plumbing::force_query_with_job::hfd5ad0b4b22e31e5 [INFO] [stderr] 47: 0x7f9e37705040 - rustc_query_system::query::plumbing::get_query_impl::hd9c3c02f85179c39 [INFO] [stderr] 48: 0x7f9e3772a661 - rustc_interface::queries::::enter::h37dc0d25febc6a5f [INFO] [stderr] 49: 0x7f9e37720374 - rustc_span::with_source_map::h90035e4b67dff78a [INFO] [stderr] 50: 0x7f9e3772b8fa - rustc_interface::interface::create_compiler_and_run::h46e61fe042220283 [INFO] [stderr] 51: 0x7f9e377209fe - rustc_span::with_session_globals::h6c0c0c5cdfddb2f0 [INFO] [stderr] 52: 0x7f9e37726953 - std::sys_common::backtrace::__rust_begin_short_backtrace::heca5a0ac7681bb8f [INFO] [stderr] 53: 0x7f9e3770670a - core::ops::function::FnOnce::call_once{{vtable.shim}}::h9252ff68bbf72795 [INFO] [stderr] 54: 0x7f9e34b4126a - as core::ops::function::FnOnce>::call_once::h8ffdf8dc1f37e360 [INFO] [stderr] at /rustc/9cfe725f0995b018340c519db1b2f3cf8a7e0631/library/alloc/src/boxed.rs:1487:9 [INFO] [stderr] 55: 0x7f9e34b4126a - as core::ops::function::FnOnce>::call_once::h74f6ec149ce6acc8 [INFO] [stderr] at /rustc/9cfe725f0995b018340c519db1b2f3cf8a7e0631/library/alloc/src/boxed.rs:1487:9 [INFO] [stderr] 56: 0x7f9e34b4126a - std::sys::unix::thread::Thread::new::thread_start::h565bef3956c58d58 [INFO] [stderr] at /rustc/9cfe725f0995b018340c519db1b2f3cf8a7e0631/library/std/src/sys/unix/thread.rs:71:17 [INFO] [stderr] 57: 0x7f9e34a50609 - start_thread [INFO] [stderr] 58: 0x7f9e34964293 - clone [INFO] [stderr] 59: 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 1.51.0-nightly (9cfe725f0 2021-01-23) 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] [stdout] warning: unused `std::result::Result` that must be used [INFO] [stdout] --> src/main.rs:121:9 [INFO] [stdout] | [INFO] [stdout] 121 | 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:124:13 [INFO] [stdout] | [INFO] [stdout] 124 | 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] #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] [stderr] warning: build failed, waiting for other jobs to finish... [INFO] [stdout] warning: 5 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] error: build failed [INFO] running `Command { std: "docker" "inspect" "a7437f3c888fbc2f1bfc13de6b929e515fbe173d3caf702ff9df1fe1192fdbd6", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "a7437f3c888fbc2f1bfc13de6b929e515fbe173d3caf702ff9df1fe1192fdbd6", kill_on_drop: false }` [INFO] [stdout] a7437f3c888fbc2f1bfc13de6b929e515fbe173d3caf702ff9df1fe1192fdbd6