[INFO] cloning repository https://github.com/lolgeny/copper [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/lolgeny/copper" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flolgeny%2Fcopper", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flolgeny%2Fcopper'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 6d808ed9070dee5cd4ce477b35e09fa4b9713ae2 [INFO] checking lolgeny/copper against try#4a23c45c7893f1416456144e3883cc48ea91722e for pr-82322 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flolgeny%2Fcopper" "/workspace/builds/worker-8/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-8/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/lolgeny/copper on toolchain 4a23c45c7893f1416456144e3883cc48ea91722e [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+4a23c45c7893f1416456144e3883cc48ea91722e" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/lolgeny/copper [INFO] finished tweaking git repo https://github.com/lolgeny/copper [INFO] tweaked toml for git repo https://github.com/lolgeny/copper written to /workspace/builds/worker-8/source/Cargo.toml [INFO] crate git repo https://github.com/lolgeny/copper already has a lockfile, it will not be regenerated [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+4a23c45c7893f1416456144e3883cc48ea91722e" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Downloading crates ... [INFO] [stderr] Downloaded convert_case v0.4.0 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+4a23c45c7893f1416456144e3883cc48ea91722e" "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] b0a021f7e413b7c2cb66809b2fabcafe1ada60c1a400a1c5b38cc7c81a69bc2e [INFO] running `Command { std: "docker" "start" "-a" "b0a021f7e413b7c2cb66809b2fabcafe1ada60c1a400a1c5b38cc7c81a69bc2e", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "b0a021f7e413b7c2cb66809b2fabcafe1ada60c1a400a1c5b38cc7c81a69bc2e", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "b0a021f7e413b7c2cb66809b2fabcafe1ada60c1a400a1c5b38cc7c81a69bc2e", kill_on_drop: false }` [INFO] [stdout] b0a021f7e413b7c2cb66809b2fabcafe1ada60c1a400a1c5b38cc7c81a69bc2e [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+4a23c45c7893f1416456144e3883cc48ea91722e" "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] f60d02ea02e9a9fcace215dc4032ed49757b70f9abcafd23803b35c5b96e0e89 [INFO] running `Command { std: "docker" "start" "-a" "f60d02ea02e9a9fcace215dc4032ed49757b70f9abcafd23803b35c5b96e0e89", kill_on_drop: false }` [INFO] [stderr] Compiling syn v1.0.60 [INFO] [stderr] Compiling serde_derive v1.0.123 [INFO] [stderr] Compiling serde v1.0.123 [INFO] [stderr] Compiling convert_case v0.4.0 [INFO] [stderr] Compiling serde_json v1.0.62 [INFO] [stderr] Checking itoa v0.4.7 [INFO] [stderr] Compiling quote v1.0.9 [INFO] [stderr] Compiling copper v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] error: expected one of `(`, `,`, `=`, `{`, or `}`, found `minecraft` [INFO] [stdout] --> /opt/rustwide/target/debug/build/copper-b091888c425c33e9/out/blocks.rs:6:1 [INFO] [stdout] | [INFO] [stdout] 5 | AcaciaButton [INFO] [stdout] | - [INFO] [stdout] | | [INFO] [stdout] | expected one of `(`, `,`, `=`, `{`, or `}` [INFO] [stdout] | help: missing `,` [INFO] [stdout] 6 | minecraft:acaciaDoor [INFO] [stdout] | ^^^^^^^^^ unexpected token [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] thread 'rustc' panicked at 'Stack should be empty: final_buf=FrameData { open: /opt/rustwide/target/debug/build/copper-b091888c425c33e9/out/blocks.rs:4:16: 4:17 (#0), inner: [(Token(Token { kind: Ident("AcaciaButton", false), span: /opt/rustwide/target/debug/build/copper-b091888c425c33e9/out/blocks.rs:5:5: 5:17 (#0) }), Alone), (Token(Token { kind: Ident("minecraft", false), span: /opt/rustwide/target/debug/build/copper-b091888c425c33e9/out/blocks.rs:6:1: 6:10 (#0) }), Joint)] } stack=[FrameData { open: src/lib.rs:1:1: 1:1 (#0), inner: [(Token(Token { kind: Ident("pub", false), span: /opt/rustwide/target/debug/build/copper-b091888c425c33e9/out/blocks.rs:4:1: 4:4 (#0) }), Alone), (Token(Token { kind: Ident("enum", false), span: /opt/rustwide/target/debug/build/copper-b091888c425c33e9/out/blocks.rs:4:5: 4:9 (#0) }), Alone), (Token(Token { kind: Ident("Block", false), span: /opt/rustwide/target/debug/build/copper-b091888c425c33e9/out/blocks.rs:4:10: 4:15 (#0) }), Alone)] }]', compiler/rustc_parse/src/parser/attr_wrapper.rs:183:5 [INFO] [stdout] error: expected one of `(`, `,`, `=`, `{`, or `}`, found `:` [INFO] [stdout] --> /opt/rustwide/target/debug/build/copper-b091888c425c33e9/out/blocks.rs:6:10 [INFO] [stdout] | [INFO] [stdout] 6 | minecraft:acaciaDoor [INFO] [stdout] | ^ expected one of `(`, `,`, `=`, `{`, or `}` [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] stack backtrace: [INFO] [stdout] error: expected item, found `:` [INFO] [stdout] --> /opt/rustwide/target/debug/build/copper-b091888c425c33e9/out/blocks.rs:6:10 [INFO] [stdout] | [INFO] [stdout] 6 | minecraft:acaciaDoor [INFO] [stdout] | ^ [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] 0: 0x7fb3026ddf80 - std::backtrace_rs::backtrace::libunwind::trace::hb4de9797f80b7b8c [INFO] [stderr] at /rustc/4a23c45c7893f1416456144e3883cc48ea91722e/library/std/src/../../backtrace/src/backtrace/libunwind.rs:90:5 [INFO] [stderr] 1: 0x7fb3026ddf80 - std::backtrace_rs::backtrace::trace_unsynchronized::h59566d0bd20efff7 [INFO] [stderr] at /rustc/4a23c45c7893f1416456144e3883cc48ea91722e/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5 [INFO] [stderr] 2: 0x7fb3026ddf80 - std::sys_common::backtrace::_print_fmt::hcfa5ce6be50275d4 [INFO] [stderr] at /rustc/4a23c45c7893f1416456144e3883cc48ea91722e/library/std/src/sys_common/backtrace.rs:67:5 [INFO] [stderr] 3: 0x7fb3026ddf80 - ::fmt::hd8c307a38b9bab04 [INFO] [stderr] at /rustc/4a23c45c7893f1416456144e3883cc48ea91722e/library/std/src/sys_common/backtrace.rs:46:22 [INFO] [stdout] error: expected one of `(`, `,`, `=`, `{`, or `}`, found `minecraft` [INFO] [stdout] --> /opt/rustwide/target/debug/build/copper-b091888c425c33e9/out/blocks.rs:6:1 [INFO] [stdout] | [INFO] [stdout] 5 | AcaciaButton [INFO] [stdout] | - [INFO] [stdout] | | [INFO] [stdout] | expected one of `(`, `,`, `=`, `{`, or `}` [INFO] [stdout] | help: missing `,` [INFO] [stdout] 6 | minecraft:acaciaDoor [INFO] [stdout] | ^^^^^^^^^ unexpected token [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: expected one of `(`, `,`, `=`, `{`, or `}`, found `:` [INFO] [stdout] --> /opt/rustwide/target/debug/build/copper-b091888c425c33e9/out/blocks.rs:6:10 [INFO] [stdout] | [INFO] [stdout] 6 | minecraft:acaciaDoor [INFO] [stdout] | ^ expected one of `(`, `,`, `=`, `{`, or `}` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: expected item, found `:` [INFO] [stdout] --> /opt/rustwide/target/debug/build/copper-b091888c425c33e9/out/blocks.rs:6:10 [INFO] [stdout] | [INFO] [stdout] 6 | minecraft:acaciaDoor [INFO] [stdout] | ^ [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] thread 'rustc' panicked at 'Stack should be empty: final_buf=FrameData { open: /opt/rustwide/target/debug/build/copper-b091888c425c33e9/out/blocks.rs:4:16: 4:17 (#0), inner: [(Token(Token { kind: Ident("AcaciaButton", false), span: /opt/rustwide/target/debug/build/copper-b091888c425c33e9/out/blocks.rs:5:5: 5:17 (#0) }), Alone), (Token(Token { kind: Ident("minecraft", false), span: /opt/rustwide/target/debug/build/copper-b091888c425c33e9/out/blocks.rs:6:1: 6:10 (#0) }), Joint)] } stack=[FrameData { open: src/lib.rs:1:1: 1:1 (#0), inner: [(Token(Token { kind: Ident("pub", false), span: /opt/rustwide/target/debug/build/copper-b091888c425c33e9/out/blocks.rs:4:1: 4:4 (#0) }), Alone), (Token(Token { kind: Ident("enum", false), span: /opt/rustwide/target/debug/build/copper-b091888c425c33e9/out/blocks.rs:4:5: 4:9 (#0) }), Alone), (Token(Token { kind: Ident("Block", false), span: /opt/rustwide/target/debug/build/copper-b091888c425c33e9/out/blocks.rs:4:10: 4:15 (#0) }), Alone)] }]', compiler/rustc_parse/src/parser/attr_wrapper.rs:183:5 [INFO] [stderr] stack backtrace: [INFO] [stderr] 4: 0x7fb302751edc - core::fmt::write::h3868db8542c90941 [INFO] [stderr] at /rustc/4a23c45c7893f1416456144e3883cc48ea91722e/library/core/src/fmt/mod.rs:1092:17 [INFO] [stderr] 5: 0x7fb3026d13c2 - std::io::Write::write_fmt::hab90295d5a0f197d [INFO] [stderr] at /rustc/4a23c45c7893f1416456144e3883cc48ea91722e/library/std/src/io/mod.rs:1568:15 [INFO] [stderr] 6: 0x7fb3026e1df5 - std::sys_common::backtrace::_print::h19224910b8700cf1 [INFO] [stderr] at /rustc/4a23c45c7893f1416456144e3883cc48ea91722e/library/std/src/sys_common/backtrace.rs:49:5 [INFO] [stderr] 7: 0x7fb3026e1df5 - std::sys_common::backtrace::print::h25dedfa68c5fb84a [INFO] [stderr] at /rustc/4a23c45c7893f1416456144e3883cc48ea91722e/library/std/src/sys_common/backtrace.rs:36:9 [INFO] [stderr] 8: 0x7fb3026e1df5 - std::panicking::default_hook::{{closure}}::h12c5765653a72a42 [INFO] [stderr] at /rustc/4a23c45c7893f1416456144e3883cc48ea91722e/library/std/src/panicking.rs:208:50 [INFO] [stderr] 9: 0x7fb3026e18a3 - std::panicking::default_hook::he65cee71c4209f0c [INFO] [stderr] at /rustc/4a23c45c7893f1416456144e3883cc48ea91722e/library/std/src/panicking.rs:225:9 [INFO] [stderr] 0: 0x7f38b31bdf80 - std::backtrace_rs::backtrace::libunwind::trace::hb4de9797f80b7b8c [INFO] [stderr] at /rustc/4a23c45c7893f1416456144e3883cc48ea91722e/library/std/src/../../backtrace/src/backtrace/libunwind.rs:90:5 [INFO] [stderr] 1: 0x7f38b31bdf80 - std::backtrace_rs::backtrace::trace_unsynchronized::h59566d0bd20efff7 [INFO] [stderr] at /rustc/4a23c45c7893f1416456144e3883cc48ea91722e/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5 [INFO] [stderr] 2: 0x7f38b31bdf80 - std::sys_common::backtrace::_print_fmt::hcfa5ce6be50275d4 [INFO] [stderr] at /rustc/4a23c45c7893f1416456144e3883cc48ea91722e/library/std/src/sys_common/backtrace.rs:67:5 [INFO] [stderr] 3: 0x7f38b31bdf80 - ::fmt::hd8c307a38b9bab04 [INFO] [stderr] at /rustc/4a23c45c7893f1416456144e3883cc48ea91722e/library/std/src/sys_common/backtrace.rs:46:22 [INFO] [stderr] 4: 0x7f38b3231edc - core::fmt::write::h3868db8542c90941 [INFO] [stderr] at /rustc/4a23c45c7893f1416456144e3883cc48ea91722e/library/core/src/fmt/mod.rs:1092:17 [INFO] [stderr] 5: 0x7f38b31b13c2 - std::io::Write::write_fmt::hab90295d5a0f197d [INFO] [stderr] at /rustc/4a23c45c7893f1416456144e3883cc48ea91722e/library/std/src/io/mod.rs:1568:15 [INFO] [stderr] 6: 0x7f38b31c1df5 - std::sys_common::backtrace::_print::h19224910b8700cf1 [INFO] [stderr] at /rustc/4a23c45c7893f1416456144e3883cc48ea91722e/library/std/src/sys_common/backtrace.rs:49:5 [INFO] [stderr] 7: 0x7f38b31c1df5 - std::sys_common::backtrace::print::h25dedfa68c5fb84a [INFO] [stderr] at /rustc/4a23c45c7893f1416456144e3883cc48ea91722e/library/std/src/sys_common/backtrace.rs:36:9 [INFO] [stderr] 8: 0x7f38b31c1df5 - std::panicking::default_hook::{{closure}}::h12c5765653a72a42 [INFO] [stderr] at /rustc/4a23c45c7893f1416456144e3883cc48ea91722e/library/std/src/panicking.rs:208:50 [INFO] [stderr] 9: 0x7f38b31c18a3 - std::panicking::default_hook::he65cee71c4209f0c [INFO] [stderr] at /rustc/4a23c45c7893f1416456144e3883cc48ea91722e/library/std/src/panicking.rs:225:9 [INFO] [stderr] 10: 0x7fb302ed9cbb - rustc_driver::report_ice::h6340bfb3a725d8f1 [INFO] [stderr] 11: 0x7fb3026e26f6 - std::panicking::rust_panic_with_hook::h01a674d863fe0d8a [INFO] [stderr] at /rustc/4a23c45c7893f1416456144e3883cc48ea91722e/library/std/src/panicking.rs:595:17 [INFO] [stderr] 12: 0x7fb3026e2217 - std::panicking::begin_panic_handler::{{closure}}::h9b9fecf185178864 [INFO] [stderr] at /rustc/4a23c45c7893f1416456144e3883cc48ea91722e/library/std/src/panicking.rs:497:13 [INFO] [stderr] 13: 0x7fb3026de41c - std::sys_common::backtrace::__rust_end_short_backtrace::h57be46a42dc7f24b [INFO] [stderr] at /rustc/4a23c45c7893f1416456144e3883cc48ea91722e/library/std/src/sys_common/backtrace.rs:141:18 [INFO] [stderr] 14: 0x7fb3026e2179 - rust_begin_unwind [INFO] [stderr] at /rustc/4a23c45c7893f1416456144e3883cc48ea91722e/library/std/src/panicking.rs:493:5 [INFO] [stderr] 15: 0x7fb3026e212b - std::panicking::begin_panic_fmt::h12277576db89392f [INFO] [stderr] at /rustc/4a23c45c7893f1416456144e3883cc48ea91722e/library/std/src/panicking.rs:435:5 [INFO] [stderr] 16: 0x7fb3054e558d - ::collect_tokens_trailing_token::LazyTokenStreamImpl as rustc_ast::tokenstream::CreateTokenStream>::create_token_stream::h255efd3e414ea831 [INFO] [stderr] 17: 0x7fb3054f4e3d - rustc_parse::prepend_attrs::h70164d0a30e8f2fc [INFO] [stderr] 18: 0x7fb3054f4825 - rustc_parse::nt_to_tokenstream::h7dd698bdd4d7a100 [INFO] [stderr] 19: 0x7fb305476d2c - ::expand::hf1e520a42cb313db [INFO] [stderr] 20: 0x7fb304961b25 - rustc_expand::expand::MacroExpander::fully_expand_fragment::hbb025e52df748ccb [INFO] [stderr] 21: 0x7fb30546e027 - rustc_expand::expand::MacroExpander::expand_crate::h39a9b432d8145383 [INFO] [stderr] 22: 0x7fb304c77b61 - rustc_session::utils::::time::had1cd6251e7594bc [INFO] [stderr] 23: 0x7fb304c7cb0b - rustc_interface::passes::configure_and_expand_inner::he3ced155d33d90ec [INFO] [stderr] 24: 0x7fb304c75cdf - rustc_interface::passes::configure_and_expand::{{closure}}::h9a2946be637ac2b2 [INFO] [stderr] 25: 0x7fb304c70f66 - rustc_data_structures::box_region::PinnedGenerator::new::ha987781991bb0549 [INFO] [stderr] 26: 0x7fb304c7bf25 - rustc_interface::passes::configure_and_expand::h3f81da4df73d7521 [INFO] [stderr] 27: 0x7fb304c8d906 - rustc_interface::queries::Queries::expansion::h42187c2e69940591 [INFO] [stderr] 28: 0x7fb304c3a503 - rustc_interface::queries::::enter::h869df3d933a9c4bf [INFO] [stderr] 29: 0x7fb304c33a4a - rustc_span::with_source_map::h303d2274c213ba81 [INFO] [stderr] 30: 0x7fb304c3b6b3 - rustc_interface::interface::create_compiler_and_run::h5cf2b3e7e4563934 [INFO] [stderr] 31: 0x7fb304c34888 - scoped_tls::ScopedKey::set::ha088674601b01112 [INFO] [stderr] 32: 0x7fb304c3a138 - std::sys_common::backtrace::__rust_begin_short_backtrace::h0b0a52fe89ac2938 [INFO] [stderr] 33: 0x7fb304c675fa - core::ops::function::FnOnce::call_once{{vtable.shim}}::h79443ee7a75884ce [INFO] [stderr] 34: 0x7fb3026f277a - as core::ops::function::FnOnce>::call_once::h321523073ee11258 [INFO] [stderr] at /rustc/4a23c45c7893f1416456144e3883cc48ea91722e/library/alloc/src/boxed.rs:1546:9 [INFO] [stderr] 35: 0x7fb3026f277a - as core::ops::function::FnOnce>::call_once::hf0e85e12c83b99b3 [INFO] [stderr] at /rustc/4a23c45c7893f1416456144e3883cc48ea91722e/library/alloc/src/boxed.rs:1546:9 [INFO] [stderr] 36: 0x7fb3026f277a - std::sys::unix::thread::Thread::new::thread_start::hba22c7961aa0e2f8 [INFO] [stderr] at /rustc/4a23c45c7893f1416456144e3883cc48ea91722e/library/std/src/sys/unix/thread.rs:71:17 [INFO] [stderr] 37: 0x7fb30260e609 - start_thread [INFO] [stderr] 38: 0x7fb302522293 - clone [INFO] [stderr] 39: 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 1.52.0-nightly (4a23c45c7 2021-02-21) 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] end of query stack [INFO] [stderr] 10: 0x7f38b39b9cbb - rustc_driver::report_ice::h6340bfb3a725d8f1 [INFO] [stderr] 11: 0x7f38b31c26f6 - std::panicking::rust_panic_with_hook::h01a674d863fe0d8a [INFO] [stderr] at /rustc/4a23c45c7893f1416456144e3883cc48ea91722e/library/std/src/panicking.rs:595:17 [INFO] [stderr] 12: 0x7f38b31c2217 - std::panicking::begin_panic_handler::{{closure}}::h9b9fecf185178864 [INFO] [stderr] at /rustc/4a23c45c7893f1416456144e3883cc48ea91722e/library/std/src/panicking.rs:497:13 [INFO] [stderr] 13: 0x7f38b31be41c - std::sys_common::backtrace::__rust_end_short_backtrace::h57be46a42dc7f24b [INFO] [stderr] at /rustc/4a23c45c7893f1416456144e3883cc48ea91722e/library/std/src/sys_common/backtrace.rs:141:18 [INFO] [stderr] 14: 0x7f38b31c2179 - rust_begin_unwind [INFO] [stderr] at /rustc/4a23c45c7893f1416456144e3883cc48ea91722e/library/std/src/panicking.rs:493:5 [INFO] [stderr] 15: 0x7f38b31c212b - std::panicking::begin_panic_fmt::h12277576db89392f [INFO] [stderr] at /rustc/4a23c45c7893f1416456144e3883cc48ea91722e/library/std/src/panicking.rs:435:5 [INFO] [stderr] 16: 0x7f38b5fc558d - ::collect_tokens_trailing_token::LazyTokenStreamImpl as rustc_ast::tokenstream::CreateTokenStream>::create_token_stream::h255efd3e414ea831 [INFO] [stderr] 17: 0x7f38b5fd4e3d - rustc_parse::prepend_attrs::h70164d0a30e8f2fc [INFO] [stderr] 18: 0x7f38b5fd4825 - rustc_parse::nt_to_tokenstream::h7dd698bdd4d7a100 [INFO] [stderr] 19: 0x7f38b5f56d2c - ::expand::hf1e520a42cb313db [INFO] [stderr] 20: 0x7f38b5441b25 - rustc_expand::expand::MacroExpander::fully_expand_fragment::hbb025e52df748ccb [INFO] [stderr] 21: 0x7f38b5f4e027 - rustc_expand::expand::MacroExpander::expand_crate::h39a9b432d8145383 [INFO] [stderr] 22: 0x7f38b5757b61 - rustc_session::utils::::time::had1cd6251e7594bc [INFO] [stderr] 23: 0x7f38b575cb0b - rustc_interface::passes::configure_and_expand_inner::he3ced155d33d90ec [INFO] [stderr] 24: 0x7f38b5755cdf - rustc_interface::passes::configure_and_expand::{{closure}}::h9a2946be637ac2b2 [INFO] [stderr] 25: 0x7f38b5750f66 - rustc_data_structures::box_region::PinnedGenerator::new::ha987781991bb0549 [INFO] [stderr] 26: 0x7f38b575bf25 - rustc_interface::passes::configure_and_expand::h3f81da4df73d7521 [INFO] [stderr] 27: 0x7f38b576d906 - rustc_interface::queries::Queries::expansion::h42187c2e69940591 [INFO] [stderr] 28: 0x7f38b571a503 - rustc_interface::queries::::enter::h869df3d933a9c4bf [INFO] [stderr] 29: 0x7f38b5713a4a - rustc_span::with_source_map::h303d2274c213ba81 [INFO] [stderr] 30: 0x7f38b571b6b3 - rustc_interface::interface::create_compiler_and_run::h5cf2b3e7e4563934 [INFO] [stderr] 31: 0x7f38b5714888 - scoped_tls::ScopedKey::set::ha088674601b01112 [INFO] [stderr] 32: 0x7f38b571a138 - std::sys_common::backtrace::__rust_begin_short_backtrace::h0b0a52fe89ac2938 [INFO] [stderr] 33: 0x7f38b57475fa - core::ops::function::FnOnce::call_once{{vtable.shim}}::h79443ee7a75884ce [INFO] [stderr] 34: 0x7f38b31d277a - as core::ops::function::FnOnce>::call_once::h321523073ee11258 [INFO] [stderr] at /rustc/4a23c45c7893f1416456144e3883cc48ea91722e/library/alloc/src/boxed.rs:1546:9 [INFO] [stderr] 35: 0x7f38b31d277a - as core::ops::function::FnOnce>::call_once::hf0e85e12c83b99b3 [INFO] [stderr] at /rustc/4a23c45c7893f1416456144e3883cc48ea91722e/library/alloc/src/boxed.rs:1546:9 [INFO] [stderr] 36: 0x7f38b31d277a - std::sys::unix::thread::Thread::new::thread_start::hba22c7961aa0e2f8 [INFO] [stderr] at /rustc/4a23c45c7893f1416456144e3883cc48ea91722e/library/std/src/sys/unix/thread.rs:71:17 [INFO] [stderr] 37: 0x7f38b30ee609 - start_thread [INFO] [stderr] 38: 0x7f38b3002293 - clone [INFO] [stderr] 39: 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 1.52.0-nightly (4a23c45c7 2021-02-21) running on x86_64-unknown-linux-gnu [INFO] [stderr] [INFO] [stderr] note: compiler flags: -C embed-bitcode=no -C debuginfo=2 [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] end of query stack [INFO] [stdout] error: aborting due to 3 previous errors [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: aborting due to 3 previous errors [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] error: could not compile `copper` [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" "f60d02ea02e9a9fcace215dc4032ed49757b70f9abcafd23803b35c5b96e0e89", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "f60d02ea02e9a9fcace215dc4032ed49757b70f9abcafd23803b35c5b96e0e89", kill_on_drop: false }` [INFO] [stdout] f60d02ea02e9a9fcace215dc4032ed49757b70f9abcafd23803b35c5b96e0e89