[INFO] fetching crate ouroboros_examples 0.8.3... [INFO] checking ouroboros_examples-0.8.3 against master#836c31742687ba4e2f857b5b698e1e9e6b67619c for pr-81789 [INFO] extracting crate ouroboros_examples 0.8.3 into /workspace/builds/worker-2/source [INFO] validating manifest of crates.io crate ouroboros_examples 0.8.3 on toolchain 836c31742687ba4e2f857b5b698e1e9e6b67619c [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+836c31742687ba4e2f857b5b698e1e9e6b67619c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking crates.io crate ouroboros_examples 0.8.3 [INFO] finished tweaking crates.io crate ouroboros_examples 0.8.3 [INFO] tweaked toml for crates.io crate ouroboros_examples 0.8.3 written to /workspace/builds/worker-2/source/Cargo.toml [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+836c31742687ba4e2f857b5b698e1e9e6b67619c" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }` [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+836c31742687ba4e2f857b5b698e1e9e6b67619c" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+836c31742687ba4e2f857b5b698e1e9e6b67619c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 4d8014b53749c5f2238a21dcddf7d7205c6827fb80da81646c6e4a8f1727e3b2 [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" "4d8014b53749c5f2238a21dcddf7d7205c6827fb80da81646c6e4a8f1727e3b2", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "4d8014b53749c5f2238a21dcddf7d7205c6827fb80da81646c6e4a8f1727e3b2", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "4d8014b53749c5f2238a21dcddf7d7205c6827fb80da81646c6e4a8f1727e3b2", kill_on_drop: false }` [INFO] [stdout] 4d8014b53749c5f2238a21dcddf7d7205c6827fb80da81646c6e4a8f1727e3b2 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+836c31742687ba4e2f857b5b698e1e9e6b67619c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 431143e6092e4ca81c41a02c6f13f6588e3884c9a9cd627fb2bdaa2071936ebb [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" "431143e6092e4ca81c41a02c6f13f6588e3884c9a9cd627fb2bdaa2071936ebb", kill_on_drop: false }` [INFO] [stderr] Compiling serde_json v1.0.64 [INFO] [stderr] Checking itoa v0.4.7 [INFO] [stderr] Compiling proc-macro-error-attr v1.0.4 [INFO] [stderr] Compiling proc-macro-error v1.0.4 [INFO] [stderr] Compiling tokio v1.5.0 [INFO] [stderr] Compiling serde_derive v1.0.125 [INFO] [stderr] Compiling Inflector v0.11.4 [INFO] [stderr] Compiling tokio-macros v1.1.0 [INFO] [stderr] Compiling ouroboros_macro v0.8.3 [INFO] [stderr] Checking ouroboros v0.8.3 [INFO] [stderr] Checking ouroboros_examples v0.8.3 (/opt/rustwide/workdir) [INFO] [stdout] warning: field is never read: `data_ref` [INFO] [stdout] --> src/lib.rs:13:5 [INFO] [stdout] | [INFO] [stdout] 13 | data_ref: &'this i32, [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field is never read: `data` [INFO] [stdout] --> src/lib.rs:11:5 [INFO] [stdout] | [INFO] [stdout] 11 | data: Box, [INFO] [stdout] | ^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field is never read: `c` [INFO] [stdout] --> src/lib.rs:26:5 [INFO] [stdout] | [INFO] [stdout] 26 | c: Rc<&'this i32>, [INFO] [stdout] | ^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field is never read: `b` [INFO] [stdout] --> src/lib.rs:24:5 [INFO] [stdout] | [INFO] [stdout] 24 | b: Arc<&'this i32>, [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field is never read: `a` [INFO] [stdout] --> src/lib.rs:22:5 [INFO] [stdout] | [INFO] [stdout] 22 | a: Box, [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field is never read: `float_reference` [INFO] [stdout] --> src/lib.rs:37:5 [INFO] [stdout] | [INFO] [stdout] 37 | float_reference: &'this mut f32, [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field is never read: `int_reference` [INFO] [stdout] --> src/lib.rs:35:5 [INFO] [stdout] | [INFO] [stdout] 35 | int_reference: &'this i32, [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field is never read: `float_data` [INFO] [stdout] --> src/lib.rs:33:5 [INFO] [stdout] | [INFO] [stdout] 33 | float_data: Box, [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field is never read: `int_data` [INFO] [stdout] --> src/lib.rs:32:5 [INFO] [stdout] | [INFO] [stdout] 32 | int_data: Box, [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field is never read: `data_ref` [INFO] [stdout] --> src/lib.rs:46:5 [INFO] [stdout] | [INFO] [stdout] 46 | data_ref: &'this i32, [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field is never read: `data` [INFO] [stdout] --> src/lib.rs:44:5 [INFO] [stdout] | [INFO] [stdout] 44 | data: Box, [INFO] [stdout] | ^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] thread 'rustc' panicked at 'Box', /rustc/836c31742687ba4e2f857b5b698e1e9e6b67619c/library/std/src/panic.rs:59:5 [INFO] [stdout] error: internal compiler error: compiler/rustc_mir/src/transform/generator.rs:751:13: Broken MIR: generator contains type Pin>> in MIR, but typeck only knows about for<'r, 's, 't0> {ResumeTy, Box, impl for<'this> ::core::ops::FnOnce(&'this as [INFO] [stdout] ::core::ops::Deref>::Target) [INFO] [stdout] -> [INFO] [stdout] ::std::pin::Pin<::std::boxed::Box + [INFO] [stdout] 'this>>, MaybeUninit, &'r i32, Pin + 't0)>>, ()} [INFO] [stdout] --> src/lib.rs:8:1 [INFO] [stdout] | [INFO] [stdout] 8 | #[self_referencing] [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this error: internal compiler error originates in an attribute macro (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] stack backtrace: [INFO] [stderr] 0: 0x7f38da9a9dd0 - std::backtrace_rs::backtrace::libunwind::trace::hec7eaac9435d3512 [INFO] [stderr] at /rustc/836c31742687ba4e2f857b5b698e1e9e6b67619c/library/std/src/../../backtrace/src/backtrace/libunwind.rs:90:5 [INFO] [stderr] 1: 0x7f38da9a9dd0 - std::backtrace_rs::backtrace::trace_unsynchronized::h42791b8fa12b7daa [INFO] [stderr] at /rustc/836c31742687ba4e2f857b5b698e1e9e6b67619c/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5 [INFO] [stderr] 2: 0x7f38da9a9dd0 - std::sys_common::backtrace::_print_fmt::h3da3ebe04fb665a8 [INFO] [stderr] at /rustc/836c31742687ba4e2f857b5b698e1e9e6b67619c/library/std/src/sys_common/backtrace.rs:67:5 [INFO] [stderr] 3: 0x7f38da9a9dd0 - ::fmt::he40bcdde3c4491cd [INFO] [stderr] at /rustc/836c31742687ba4e2f857b5b698e1e9e6b67619c/library/std/src/sys_common/backtrace.rs:46:22 [INFO] [stderr] 4: 0x7f38daa1b05f - core::fmt::write::h2c729149c08098ab [INFO] [stderr] at /rustc/836c31742687ba4e2f857b5b698e1e9e6b67619c/library/core/src/fmt/mod.rs:1094:17 [INFO] [stderr] 5: 0x7f38da99e865 - std::io::Write::write_fmt::h28e0f2f58b8d7b7e [INFO] [stderr] at /rustc/836c31742687ba4e2f857b5b698e1e9e6b67619c/library/std/src/io/mod.rs:1580:15 [INFO] [stderr] 6: 0x7f38da9ad9bb - std::sys_common::backtrace::_print::h7f0223b1e3d898fc [INFO] [stderr] at /rustc/836c31742687ba4e2f857b5b698e1e9e6b67619c/library/std/src/sys_common/backtrace.rs:49:5 [INFO] [stderr] 7: 0x7f38da9ad9bb - std::sys_common::backtrace::print::h58edd634a14c2d4c [INFO] [stderr] at /rustc/836c31742687ba4e2f857b5b698e1e9e6b67619c/library/std/src/sys_common/backtrace.rs:36:9 [INFO] [stderr] 8: 0x7f38da9ad9bb - std::panicking::default_hook::{{closure}}::h71657a7591430164 [INFO] [stderr] at /rustc/836c31742687ba4e2f857b5b698e1e9e6b67619c/library/std/src/panicking.rs:208:50 [INFO] [stderr] 9: 0x7f38da9ad49d - std::panicking::default_hook::hcdf4eb5db072c85b [INFO] [stderr] at /rustc/836c31742687ba4e2f857b5b698e1e9e6b67619c/library/std/src/panicking.rs:225:9 [INFO] [stderr] 10: 0x7f38db16c63d - rustc_driver::report_ice::hc702a08d9fb7377c [INFO] [stderr] 11: 0x7f38cc375623 - as core::ops::function::Fn>::call::hb2ae9063cf210309 [INFO] [stderr] at /rustc/836c31742687ba4e2f857b5b698e1e9e6b67619c/library/alloc/src/boxed.rs:1560:9 [INFO] [stderr] 12: 0x7f38cc38b2f6 - proc_macro::bridge::client::::enter::{{closure}}::{{closure}}::hee42c9f902475c9d [INFO] [stderr] at /rustc/836c31742687ba4e2f857b5b698e1e9e6b67619c/library/proc_macro/src/bridge/client.rs:320:21 [INFO] [stderr] 13: 0x7f38da9ae0d0 - std::panicking::rust_panic_with_hook::hfb91e961ffb5b8e0 [INFO] [stderr] at /rustc/836c31742687ba4e2f857b5b698e1e9e6b67619c/library/std/src/panicking.rs:595:17 [INFO] [stderr] 14: 0x7f38dba9de9e - std::panicking::begin_panic::{{closure}}::h24a38702b45ac0f3 [INFO] [stderr] 15: 0x7f38dba9dbd9 - std::sys_common::backtrace::__rust_end_short_backtrace::h02cc30df948cb652 [INFO] [stderr] 16: 0x7f38dba9ddf2 - std::panicking::begin_panic::h4dd79645ccae3b6e [INFO] [stderr] 17: 0x7f38dba2d220 - std::panic::panic_any::hb6abb086932facc4 [INFO] [stderr] 18: 0x7f38dba28375 - rustc_errors::HandlerInner::span_bug::hd47e97195754211a [INFO] [stderr] 19: 0x7f38dba28783 - rustc_errors::Handler::span_bug::ha07d3f2efbc4b3d3 [INFO] [stderr] 20: 0x7f38db9c835b - rustc_middle::ty::context::tls::with_opt::h41357ac587925078 [INFO] [stderr] 21: 0x7f38db9c8cd0 - rustc_middle::util::bug::opt_span_bug_fmt::hdf5251129308f472 [INFO] [stderr] 22: 0x7f38db9c8c9c - rustc_middle::util::bug::span_bug_fmt::h6df431584eb135c1 [INFO] [stderr] 23: 0x7f38dd1916da - ::run_pass::h35fb8f3bebb5fa76 [INFO] [stderr] 24: 0x7f38dc7530d5 - rustc_mir::transform::run_passes::hadd0ed6897143b9e [INFO] [stderr] 25: 0x7f38dd1f5560 - rustc_mir::transform::optimized_mir::h39ed0b27b4aefc95 [INFO] [stderr] 26: 0x7f38dc568c1f - rustc_query_system::dep_graph::graph::DepGraph::with_task_impl::h8092114f6c04d11b [INFO] [stderr] 27: 0x7f38dc54452c - rustc_data_structures::stack::ensure_sufficient_stack::h0fec7e4f57a493ad [INFO] [stderr] 28: 0x7f38dc506490 - rustc_query_system::query::plumbing::force_query_with_job::h18c0a204e19f48b1 [INFO] [stderr] 29: 0x7f38dc4e49b1 - rustc_query_system::query::plumbing::get_query_impl::h7b8f88aa3b9abc9b [INFO] [stderr] 30: 0x7f38dc558eaa - ::optimized_mir::h10cbe90dbbffd1ad [INFO] [stderr] 31: 0x7f38dc869d3f - rustc_metadata::rmeta::encoder::EncodeContext::encode_crate_root::h6c8fc5ec2eb1aca3 [INFO] [stderr] 32: 0x7f38dd294309 - rustc_metadata::rmeta::encoder::encode_metadata_impl::h1e5610af05591ef3 [INFO] [stderr] 33: 0x7f38dd2a3b51 - rustc_data_structures::sync::join::he037a5382f7b2964 [INFO] [stderr] 34: 0x7f38dd298c9e - rustc_metadata::rmeta::decoder::cstore_impl::::encode_metadata::h80d669b724ffba8e [INFO] [stderr] 35: 0x7f38dd4b0959 - rustc_middle::ty::context::TyCtxt::encode_metadata::h4f743868421bfc46 [INFO] [stderr] 36: 0x7f38dcc2600e - rustc_interface::passes::QueryContext::enter::hcd73d7d93779570e [INFO] [stderr] 37: 0x7f38dcc2edc6 - rustc_interface::queries::Queries::ongoing_codegen::h74f3ebc4a4e04394 [INFO] [stderr] 38: 0x7f38dcbea5c6 - rustc_interface::queries::::enter::h022bc5d96316a497 [INFO] [stderr] 39: 0x7f38dcbe9514 - rustc_span::with_source_map::h71765ec8b8fd9951 [INFO] [stderr] 40: 0x7f38dcbeb561 - rustc_interface::interface::create_compiler_and_run::hb7fa0da3b5c16631 [INFO] [stderr] 41: 0x7f38dcc04e18 - scoped_tls::ScopedKey::set::he6d088ee8831445a [INFO] [stderr] 42: 0x7f38dcc05334 - std::sys_common::backtrace::__rust_begin_short_backtrace::hab4e36ec9faa9780 [INFO] [stderr] 43: 0x7f38dcc08b45 - core::ops::function::FnOnce::call_once{{vtable.shim}}::h32361ced26b14e7a [INFO] [stderr] 44: 0x7f38da9bdfe3 - as core::ops::function::FnOnce>::call_once::h6bc35b6a67165211 [INFO] [stderr] at /rustc/836c31742687ba4e2f857b5b698e1e9e6b67619c/library/alloc/src/boxed.rs:1546:9 [INFO] [stderr] 45: 0x7f38da9bdfe3 - as core::ops::function::FnOnce>::call_once::h22a1030555589216 [INFO] [stderr] at /rustc/836c31742687ba4e2f857b5b698e1e9e6b67619c/library/alloc/src/boxed.rs:1546:9 [INFO] [stderr] 46: 0x7f38da9bdfe3 - std::sys::unix::thread::Thread::new::thread_start::h729365a01fb88184 [INFO] [stderr] at /rustc/836c31742687ba4e2f857b5b698e1e9e6b67619c/library/std/src/sys/unix/thread.rs:71:17 [INFO] [stderr] 47: 0x7f38da8da609 - start_thread [INFO] [stderr] 48: 0x7f38da7ee293 - clone [INFO] [stderr] 49: 0x0 - [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 1.53.0-nightly (836c31742 2021-04-03) running on x86_64-unknown-linux-gnu [INFO] [stderr] [INFO] [stderr] note: compiler flags: -C embed-bitcode=no -C debuginfo=2 --crate-type lib [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 [optimized_mir] optimizing MIR for `ouroboros_impl_box_and_ref::::new_async::{closure#0}` [INFO] [stderr] end of query stack [INFO] [stdout] error: aborting due to previous error; 11 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] error: could not compile `ouroboros_examples` [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] [stderr] error: build failed [INFO] running `Command { std: "docker" "inspect" "431143e6092e4ca81c41a02c6f13f6588e3884c9a9cd627fb2bdaa2071936ebb", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "431143e6092e4ca81c41a02c6f13f6588e3884c9a9cd627fb2bdaa2071936ebb", kill_on_drop: false }` [INFO] [stdout] 431143e6092e4ca81c41a02c6f13f6588e3884c9a9cd627fb2bdaa2071936ebb