[INFO] cloning repository https://github.com/mgattozzi/oxidizing-the-technical-interview [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/mgattozzi/oxidizing-the-technical-interview" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmgattozzi%2Foxidizing-the-technical-interview", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmgattozzi%2Foxidizing-the-technical-interview'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] b536ec33119b316c2527476541def377c63b14b4 [INFO] checking mgattozzi/oxidizing-the-technical-interview against try#411f3ca0d8086d5a27e2aaa79b9ff41f53ab2f51 for pr-138844 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmgattozzi%2Foxidizing-the-technical-interview" "/workspace/builds/worker-2-tc2/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc2/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/mgattozzi/oxidizing-the-technical-interview on toolchain 411f3ca0d8086d5a27e2aaa79b9ff41f53ab2f51 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+411f3ca0d8086d5a27e2aaa79b9ff41f53ab2f51" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] removed /workspace/builds/worker-2-tc2/source/rust-toolchain [INFO] started tweaking git repo https://github.com/mgattozzi/oxidizing-the-technical-interview [INFO] finished tweaking git repo https://github.com/mgattozzi/oxidizing-the-technical-interview [INFO] tweaked toml for git repo https://github.com/mgattozzi/oxidizing-the-technical-interview written to /workspace/builds/worker-2-tc2/source/Cargo.toml [INFO] crate git repo https://github.com/mgattozzi/oxidizing-the-technical-interview already has a lockfile, it will not be regenerated [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+411f3ca0d8086d5a27e2aaa79b9ff41f53ab2f51" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/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@sha256:4b26683ee3c49f365255c425c23003cbf4366de097804722c29c5bbbee3624d2" "/opt/rustwide/cargo-home/bin/cargo" "+411f3ca0d8086d5a27e2aaa79b9ff41f53ab2f51" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 6a3885d003f7ddb34fc2c220163cd44df2e5795ec773b7349d0c4f33a7d0edba [INFO] running `Command { std: "docker" "start" "-a" "6a3885d003f7ddb34fc2c220163cd44df2e5795ec773b7349d0c4f33a7d0edba", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "6a3885d003f7ddb34fc2c220163cd44df2e5795ec773b7349d0c4f33a7d0edba", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "6a3885d003f7ddb34fc2c220163cd44df2e5795ec773b7349d0c4f33a7d0edba", kill_on_drop: false }` [INFO] [stdout] 6a3885d003f7ddb34fc2c220163cd44df2e5795ec773b7349d0c4f33a7d0edba [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/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" "RUSTDOCFLAGS=--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@sha256:4b26683ee3c49f365255c425c23003cbf4366de097804722c29c5bbbee3624d2" "/opt/rustwide/cargo-home/bin/cargo" "+411f3ca0d8086d5a27e2aaa79b9ff41f53ab2f51" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] f8fccfcee046d7e84657d33ffdb893afeeb3455bff28f53f723463b4010e1a76 [INFO] running `Command { std: "docker" "start" "-a" "f8fccfcee046d7e84657d33ffdb893afeeb3455bff28f53f723463b4010e1a76", kill_on_drop: false }` [INFO] [stderr] Checking oxidizing-the-interview v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] error[E0557]: feature has been removed [INFO] [stdout] --> src/main.rs:1:12 [INFO] [stdout] | [INFO] [stdout] 1 | #![feature(const_fn)] [INFO] [stdout] | ^^^^^^^^ feature has been removed [INFO] [stdout] | [INFO] [stdout] = note: split into finer-grained feature gates [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0557]: feature has been removed [INFO] [stdout] --> src/main.rs:8:12 [INFO] [stdout] | [INFO] [stdout] 8 | #![feature(optin_builtin_traits)] [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^ feature has been removed [INFO] [stdout] | [INFO] [stdout] = note: renamed to `auto_traits` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0557]: feature has been removed [INFO] [stdout] --> src/main.rs:11:12 [INFO] [stdout] | [INFO] [stdout] 11 | #![feature(untagged_unions)] [INFO] [stdout] | ^^^^^^^^^^^^^^^ feature has been removed [INFO] [stdout] | [INFO] [stdout] = note: unions with `Copy` and `ManuallyDrop` fields are stable; there is no intent to stabilize more [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0557]: feature has been removed [INFO] [stdout] --> src/main.rs:1:12 [INFO] [stdout] | [INFO] [stdout] 1 | #![feature(const_fn)] [INFO] [stdout] | ^^^^^^^^ feature has been removed [INFO] [stdout] | [INFO] [stdout] = note: split into finer-grained feature gates [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0557]: feature has been removed [INFO] [stdout] --> src/main.rs:8:12 [INFO] [stdout] | [INFO] [stdout] 8 | #![feature(optin_builtin_traits)] [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^ feature has been removed [INFO] [stdout] | [INFO] [stdout] = note: renamed to `auto_traits` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0557]: feature has been removed [INFO] [stdout] --> src/main.rs:11:12 [INFO] [stdout] | [INFO] [stdout] 11 | #![feature(untagged_unions)] [INFO] [stdout] | ^^^^^^^^^^^^^^^ feature has been removed [INFO] [stdout] | [INFO] [stdout] = note: unions with `Copy` and `ManuallyDrop` fields are stable; there is no intent to stabilize more [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0658]: auto traits are experimental and possibly buggy [INFO] [stdout] --> src/main.rs:49:1 [INFO] [stdout] | [INFO] [stdout] 49 | auto trait Freeze {} [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: see issue #13231 for more information [INFO] [stdout] = help: add `#![feature(auto_traits)]` to the crate attributes to enable [INFO] [stdout] = note: this compiler was built on 2025-03-22; consider upgrading it if it is out of date [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the feature `lang_items` is internal to the compiler or standard library [INFO] [stdout] --> src/main.rs:6:12 [INFO] [stdout] | [INFO] [stdout] 6 | #![feature(lang_items)] [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: using it is strongly discouraged [INFO] [stdout] = note: `#[warn(internal_features)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the feature `allow_internal_unstable` is internal to the compiler or standard library [INFO] [stdout] --> src/main.rs:9:12 [INFO] [stdout] | [INFO] [stdout] 9 | #![feature(allow_internal_unstable)] [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: using it is strongly discouraged [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the feature `intrinsics` is internal to the compiler or standard library [INFO] [stdout] --> src/main.rs:10:12 [INFO] [stdout] | [INFO] [stdout] 10 | #![feature(intrinsics)] [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: using it is strongly discouraged [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0522]: definition of an unknown lang item: `slice` [INFO] [stdout] --> src/main.rs:128:1 [INFO] [stdout] | [INFO] [stdout] 128 | #[lang = "slice"] [INFO] [stdout] | ^^^^^^^^^^^^^^^^^ definition of unknown lang item `slice` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0522]: definition of an unknown lang item: `const_ptr` [INFO] [stdout] --> src/main.rs:145:1 [INFO] [stdout] | [INFO] [stdout] 145 | #[lang = "const_ptr"] [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^ definition of unknown lang item `const_ptr` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0522]: definition of an unknown lang item: `mut_ptr` [INFO] [stdout] --> src/main.rs:161:1 [INFO] [stdout] | [INFO] [stdout] 161 | #[lang = "mut_ptr"] [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^ definition of unknown lang item `mut_ptr` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: attribute should be applied to a macro [INFO] [stdout] --> src/main.rs:131:5 [INFO] [stdout] | [INFO] [stdout] 131 | #[allow_internal_unstable(const_fn_union)] [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] 132 | / const fn len(&self) -> usize { [INFO] [stdout] 133 | | unsafe { Repr { rust: self }.raw.len } [INFO] [stdout] 134 | | } [INFO] [stdout] | |_____- not a macro [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the feature `const_fn_union` has been stable since 1.56.0 and no longer requires an attribute to enable [INFO] [stdout] --> src/main.rs:2:12 [INFO] [stdout] | [INFO] [stdout] 2 | #![feature(const_fn_union)] [INFO] [stdout] | ^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(stable_features)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the feature `const_panic` has been stable since 1.57.0 and no longer requires an attribute to enable [INFO] [stdout] --> src/main.rs:3:12 [INFO] [stdout] | [INFO] [stdout] 3 | #![feature(const_panic)] [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the feature `const_if_match` has been stable since 1.46.0 and no longer requires an attribute to enable [INFO] [stdout] --> src/main.rs:4:12 [INFO] [stdout] | [INFO] [stdout] 4 | #![feature(const_if_match)] [INFO] [stdout] | ^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the feature `const_raw_ptr_deref` has been stable since 1.58.0 and no longer requires an attribute to enable [INFO] [stdout] --> src/main.rs:5:12 [INFO] [stdout] | [INFO] [stdout] 5 | #![feature(const_raw_ptr_deref)] [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0658]: auto traits are experimental and possibly buggy [INFO] [stdout] --> src/main.rs:49:1 [INFO] [stdout] | [INFO] [stdout] 49 | auto trait Freeze {} [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: see issue #13231 for more information [INFO] [stdout] = help: add `#![feature(auto_traits)]` to the crate attributes to enable [INFO] [stdout] = note: this compiler was built on 2025-03-22; consider upgrading it if it is out of date [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the feature `lang_items` is internal to the compiler or standard library [INFO] [stdout] --> src/main.rs:6:12 [INFO] [stdout] | [INFO] [stdout] 6 | #![feature(lang_items)] [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: using it is strongly discouraged [INFO] [stdout] = note: `#[warn(internal_features)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the feature `allow_internal_unstable` is internal to the compiler or standard library [INFO] [stdout] --> src/main.rs:9:12 [INFO] [stdout] | [INFO] [stdout] 9 | #![feature(allow_internal_unstable)] [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: using it is strongly discouraged [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the feature `intrinsics` is internal to the compiler or standard library [INFO] [stdout] --> src/main.rs:10:12 [INFO] [stdout] | [INFO] [stdout] 10 | #![feature(intrinsics)] [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: using it is strongly discouraged [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0152]: found duplicate lang item `sized` [INFO] [stdout] --> src/main.rs:47:1 [INFO] [stdout] | [INFO] [stdout] 47 | pub trait Sized {} [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: the lang item is first defined in crate `core` (which `std` depends on) [INFO] [stdout] = note: first definition in `core` loaded from /opt/rustwide/rustup-home/toolchains/411f3ca0d8086d5a27e2aaa79b9ff41f53ab2f51/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcore-74a8d2c13eeedc93.rlib [INFO] [stdout] = note: second definition in the local crate (`oxidizing_the_interview`) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] Some errors have detailed explanations: E0152, E0557, E0658. [INFO] [stdout] [INFO] [stdout] For more information about an error, try `rustc --explain E0152`. [INFO] [stdout] [INFO] [stderr] [INFO] [stderr] thread 'rustc' panicked at compiler/rustc_middle/src/ty/generics.rs:223:29: [INFO] [stderr] index out of bounds: the len is 1 but the index is 1 [INFO] [stderr] stack backtrace: [INFO] [stderr] error: could not compile `oxidizing-the-interview` (bin "oxidizing-the-interview" test) due to 5 previous errors; 3 warnings emitted [INFO] [stderr] warning: build failed, waiting for other jobs to finish... [INFO] [stderr] 0: 0x7e0cf9c2a903 - ::fmt::hf749b025165e964d [INFO] [stderr] 1: 0x7e0cfa405b51 - core::fmt::write::h4a574f96a9d7382e [INFO] [stderr] 2: 0x7e0cfb6d74d1 - std::io::Write::write_fmt::h24810564cd14d63f [INFO] [stderr] 3: 0x7e0cf9c2a762 - std::sys::backtrace::BacktraceLock::print::h3fce6557c25b9903 [INFO] [stderr] 4: 0x7e0cf9c2d01a - std::panicking::default_hook::{{closure}}::hf7aa835533082ef8 [INFO] [stderr] 5: 0x7e0cf9c2cb9f - std::panicking::default_hook::h42c31aded63ed9ad [INFO] [stderr] 6: 0x7e0cf8c9cc50 - std[bc4b7ced096060e9]::panicking::update_hook::>::{closure#0} [INFO] [stderr] 7: 0x7e0cf9c2d893 - std::panicking::rust_panic_with_hook::h0783ca533a34f58b [INFO] [stderr] 8: 0x7e0cf9c2d58a - std::panicking::begin_panic_handler::{{closure}}::hd0d5b26d1aa5d3a0 [INFO] [stderr] 9: 0x7e0cf9c2adc9 - std::sys::backtrace::__rust_end_short_backtrace::hd66d1308eb3471df [INFO] [stderr] 10: 0x7e0cf9c2d24d - __rustc[7f115d6ba3c4705c]::rust_begin_unwind [INFO] [stderr] 11: 0x7e0cf666c7f0 - core::panicking::panic_fmt::hb5b28a8cae3279f6 [INFO] [stderr] 12: 0x7e0cf79aba0c - core::panicking::panic_bounds_check::h609845b15b0cb1d7 [INFO] [stderr] 13: 0x7e0cfbe585d3 - ::param_at.cold [INFO] [stderr] 14: 0x7e0cf8e5a78b - rustc_hir_analysis[62e216d4bf780748]::check::intrinsic::check_intrinsic_type [INFO] [stderr] 15: 0x7e0cfa9b39c1 - rustc_hir_analysis[62e216d4bf780748]::check::check::check_item_type [INFO] [stderr] 16: 0x7e0cfa915fa0 - rustc_hir_analysis[62e216d4bf780748]::check::wfcheck::check_well_formed [INFO] [stderr] 17: 0x7e0cfa914587 - rustc_query_impl[bfa4539a12090d5f]::plumbing::__rust_begin_short_backtrace::> [INFO] [stderr] 18: 0x7e0cfa91403c - rustc_query_system[c9a55af0edccf48f]::query::plumbing::try_execute_query::, rustc_query_system[c9a55af0edccf48f]::dep_graph::graph::DepNodeIndex>, false, false, false>, rustc_query_impl[bfa4539a12090d5f]::plumbing::QueryCtxt, false> [INFO] [stderr] 19: 0x7e0cfa913b03 - rustc_query_impl[bfa4539a12090d5f]::query_impl::check_well_formed::get_query_non_incr::__rust_end_short_backtrace [INFO] [stderr] 20: 0x7e0cfa910f95 - rustc_hir_analysis[62e216d4bf780748]::check::wfcheck::check_mod_type_wf [INFO] [stderr] 21: 0x7e0cfa910db5 - rustc_query_impl[bfa4539a12090d5f]::plumbing::__rust_begin_short_backtrace::> [INFO] [stderr] 22: 0x7e0cfb4c66ff - rustc_query_system[c9a55af0edccf48f]::query::plumbing::try_execute_query::>, false, false, false>, rustc_query_impl[bfa4539a12090d5f]::plumbing::QueryCtxt, false> [INFO] [stderr] 23: 0x7e0cfb4c648a - rustc_query_impl[bfa4539a12090d5f]::query_impl::check_mod_type_wf::get_query_non_incr::__rust_end_short_backtrace [INFO] [stderr] 24: 0x7e0cfa7a90d7 - rustc_hir_analysis[62e216d4bf780748]::check_crate [INFO] [stderr] 25: 0x7e0cfa85e6dd - rustc_interface[41ec0040a6902fa1]::passes::run_required_analyses [INFO] [stderr] 26: 0x7e0cfb28d59e - rustc_interface[41ec0040a6902fa1]::passes::analysis [INFO] [stderr] 27: 0x7e0cfb28d56d - rustc_query_impl[bfa4539a12090d5f]::plumbing::__rust_begin_short_backtrace::> [INFO] [stderr] 28: 0x7e0cfb4eee47 - rustc_query_system[c9a55af0edccf48f]::query::plumbing::try_execute_query::>, false, false, false>, rustc_query_impl[bfa4539a12090d5f]::plumbing::QueryCtxt, false> [INFO] [stderr] 29: 0x7e0cfb4eeb42 - rustc_query_impl[bfa4539a12090d5f]::query_impl::analysis::get_query_non_incr::__rust_end_short_backtrace [INFO] [stderr] 30: 0x7e0cfb6f4cbc - rustc_interface[41ec0040a6902fa1]::passes::create_and_enter_global_ctxt::, rustc_driver_impl[5dda5dff9305c82a]::run_compiler::{closure#0}::{closure#2}>::{closure#2}::{closure#0} [INFO] [stderr] 31: 0x7e0cfb50c612 - rustc_interface[41ec0040a6902fa1]::interface::run_compiler::<(), rustc_driver_impl[5dda5dff9305c82a]::run_compiler::{closure#0}>::{closure#1} [INFO] [stderr] 32: 0x7e0cfb3a3a08 - std[bc4b7ced096060e9]::sys::backtrace::__rust_begin_short_backtrace::::{closure#1}, ()>::{closure#0}, ()>::{closure#0}::{closure#0}, ()> [INFO] [stderr] 33: 0x7e0cfb3a42f4 - <::spawn_unchecked_::{closure#1}, ()>::{closure#0}, ()>::{closure#0}::{closure#0}, ()>::{closure#1} as core[f7f5ba4ce73fc54b]::ops::function::FnOnce<()>>::call_once::{shim:vtable#0} [INFO] [stderr] 34: 0x7e0cfb3a56f7 - std::sys::pal::unix::thread::Thread::new::thread_start::h35607626913e8214 [INFO] [stderr] 35: 0x7e0cfcc0caa4 - [INFO] [stderr] 36: 0x7e0cfcc99a34 - clone [INFO] [stderr] 37: 0x0 - [INFO] [stderr] [INFO] [stderr] error: the compiler unexpectedly panicked. this is a bug. [INFO] [stderr] [INFO] [stderr] note: using internal features is not supported and expected to cause internal compiler errors when used incorrectly [INFO] [stderr] [INFO] [stderr] warning: the ICE couldn't be written to `/opt/rustwide/workdir/rustc-ice-2025-03-23T20_54_37-18.txt`: Read-only file system (os error 30) [INFO] [stderr] [INFO] [stderr] note: rustc 1.87.0-nightly (411f3ca0d 2025-03-22) running on x86_64-unknown-linux-gnu [INFO] [stderr] [INFO] [stderr] note: compiler flags: --crate-type bin -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] #0 [check_well_formed] checking that `` is well-formed [INFO] [stderr] #1 [check_mod_type_wf] checking that types are well-formed in top-level module [INFO] [stderr] #2 [analysis] running analysis passes on this crate [INFO] [stderr] end of query stack [INFO] [stdout] error[E0740]: field must implement `Copy` or be wrapped in `ManuallyDrop<...>` to be used in a union [INFO] [stdout] --> src/main.rs:255:5 [INFO] [stdout] | [INFO] [stdout] 255 | pub(crate) raw: FatPtr, [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: union fields must not have drop side-effects, which is currently enforced via either `Copy` or `ManuallyDrop<...>` [INFO] [stdout] help: wrap the field type in `ManuallyDrop<...>` [INFO] [stdout] | [INFO] [stdout] 255 | pub(crate) raw: std::mem::ManuallyDrop>, [INFO] [stdout] | +++++++++++++++++++++++ + [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] Some errors have detailed explanations: E0522, E0557, E0658, E0740. [INFO] [stdout] [INFO] [stdout] For more information about an error, try `rustc --explain E0522`. [INFO] [stdout] [INFO] [stderr] error: could not compile `oxidizing-the-interview` (bin "oxidizing-the-interview") due to 9 previous errors; 7 warnings emitted [INFO] running `Command { std: "docker" "inspect" "f8fccfcee046d7e84657d33ffdb893afeeb3455bff28f53f723463b4010e1a76", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "f8fccfcee046d7e84657d33ffdb893afeeb3455bff28f53f723463b4010e1a76", kill_on_drop: false }` [INFO] [stdout] f8fccfcee046d7e84657d33ffdb893afeeb3455bff28f53f723463b4010e1a76