[INFO] cloning repository https://github.com/Rice-Rocket/chess-engine-v2 [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Rice-Rocket/chess-engine-v2" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FRice-Rocket%2Fchess-engine-v2", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FRice-Rocket%2Fchess-engine-v2'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 11f24cd4e4223245e8a86bbc6a7c00661f44c238 [INFO] checking Rice-Rocket/chess-engine-v2 against try#66388cc165a6c4ac98c074dc9f0281ff23528c55 for pr-150727 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FRice-Rocket%2Fchess-engine-v2" "/workspace/builds/worker-1-tc2/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc2/source'... [INFO] [stderr] done. [INFO] started tweaking git repo https://github.com/Rice-Rocket/chess-engine-v2 [INFO] finished tweaking git repo https://github.com/Rice-Rocket/chess-engine-v2 [INFO] tweaked toml for git repo https://github.com/Rice-Rocket/chess-engine-v2 written to /workspace/builds/worker-1-tc2/source/Cargo.toml [INFO] validating manifest of git repo https://github.com/Rice-Rocket/chess-engine-v2 on toolchain 66388cc165a6c4ac98c074dc9f0281ff23528c55 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+66388cc165a6c4ac98c074dc9f0281ff23528c55" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] crate git repo https://github.com/Rice-Rocket/chess-engine-v2 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" "+66388cc165a6c4ac98c074dc9f0281ff23528c55" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] warning: /workspace/builds/worker-1-tc2/source/crates/proc_macro_utils/Cargo.toml: `proc_macro` is deprecated in favor of `proc-macro` and will not work in the 2024 edition [INFO] [stderr] (in the `proc_macro_utils` library target) [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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:aa71247004a7fa38d13ec170f48f06cdedf5bc50b2a8645e56ed7e992e6fa513" "/opt/rustwide/cargo-home/bin/cargo" "+66388cc165a6c4ac98c074dc9f0281ff23528c55" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] e30ddd4cedcdb1b3ae9022238b3a0fa50b4eb752ad5c7270fa6246878b22ef68 [INFO] running `Command { std: "docker" "start" "-a" "e30ddd4cedcdb1b3ae9022238b3a0fa50b4eb752ad5c7270fa6246878b22ef68", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "e30ddd4cedcdb1b3ae9022238b3a0fa50b4eb752ad5c7270fa6246878b22ef68", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "e30ddd4cedcdb1b3ae9022238b3a0fa50b4eb752ad5c7270fa6246878b22ef68", kill_on_drop: false }` [INFO] [stdout] e30ddd4cedcdb1b3ae9022238b3a0fa50b4eb752ad5c7270fa6246878b22ef68 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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:aa71247004a7fa38d13ec170f48f06cdedf5bc50b2a8645e56ed7e992e6fa513" "/opt/rustwide/cargo-home/bin/cargo" "+66388cc165a6c4ac98c074dc9f0281ff23528c55" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] f9968428ff931a6d88c4067299f33f20d19f8d2e1402631d28b01d494d834249 [INFO] running `Command { std: "docker" "start" "-a" "f9968428ff931a6d88c4067299f33f20d19f8d2e1402631d28b01d494d834249", kill_on_drop: false }` [INFO] [stderr] warning: /opt/rustwide/workdir/crates/proc_macro_utils/Cargo.toml: `proc_macro` is deprecated in favor of `proc-macro` and will not work in the 2024 edition [INFO] [stderr] (in the `proc_macro_utils` library target) [INFO] [stderr] Compiling proc-macro2 v1.0.82 [INFO] [stderr] Compiling libc v0.2.154 [INFO] [stderr] Compiling anyhow v1.0.83 [INFO] [stderr] Compiling thiserror v1.0.60 [INFO] [stderr] Checking anstyle-query v1.0.3 [INFO] [stderr] Checking bytes v1.6.0 [INFO] [stderr] Checking anstream v0.6.14 [INFO] [stderr] Checking clap_builder v4.5.2 [INFO] [stderr] Checking getrandom v0.2.15 [INFO] [stderr] Checking parking_lot_core v0.9.10 [INFO] [stderr] Checking num_cpus v1.16.0 [INFO] [stderr] Checking socket2 v0.5.7 [INFO] [stderr] Checking mio v0.8.11 [INFO] [stderr] Checking signal-hook-registry v1.4.2 [INFO] [stderr] Checking termion v4.0.0 [INFO] [stderr] Checking rand_core v0.6.4 [INFO] [stderr] Checking parking_lot v0.12.2 [INFO] [stderr] Checking quote v1.0.36 [INFO] [stderr] Checking rand_chacha v0.3.1 [INFO] [stderr] Checking rand v0.8.5 [INFO] [stderr] Checking syn v2.0.62 [INFO] [stderr] Checking proc_macro_utils v0.1.0 (/opt/rustwide/workdir/crates/proc_macro_utils) [INFO] [stderr] Compiling tokio-macros v2.2.0 [INFO] [stderr] Compiling thiserror-impl v1.0.60 [INFO] [stderr] Compiling async-trait v0.1.80 [INFO] [stderr] Compiling clap_derive v4.5.4 [INFO] [stderr] Checking engine v0.1.0 (/opt/rustwide/workdir/crates/engine) [INFO] [stderr] [INFO] [stderr] thread 'rustc' (385) panicked at /rustc-dev/66388cc165a6c4ac98c074dc9f0281ff23528c55/compiler/rustc_ast/src/attr/mod.rs:302:36: [INFO] [stderr] attribute is missing tokens: Attribute { kind: Normal(NormalAttr { item: AttrItem { unsafety: Default, path: Path { span: crates/engine/src/eval/attack.rs:405:5: 405:12 (#145), segments: [PathSegment { ident: #145, id: NodeId(4294967040), args: None }], tokens: None }, args: Unparsed(Empty), tokens: None }, tokens: None }), id: AttrId(707), style: Outer, span: crates/engine/src/eval/attack.rs:405:5: 405:12 (#145) } [INFO] [stderr] stack backtrace: [INFO] [stderr] 0: 0x74980aa2bfa3 - <::print::DisplayBacktrace as core[75ca2badb63c4514]::fmt::Display>::fmt [INFO] [stderr] 1: 0x74980b00fb48 - core[75ca2badb63c4514]::fmt::write [INFO] [stderr] 2: 0x74980aa42226 - ::write_fmt [INFO] [stderr] 3: 0x74980aa01b98 - std[7d609349af90bec6]::panicking::default_hook::{closure#0} [INFO] [stderr] 4: 0x74980aa1f833 - std[7d609349af90bec6]::panicking::default_hook [INFO] [stderr] 5: 0x749809a0236a - std[7d609349af90bec6]::panicking::update_hook::>::{closure#0} [INFO] [stderr] 6: 0x74980aa1fb12 - std[7d609349af90bec6]::panicking::panic_with_hook [INFO] [stderr] 7: 0x74980aa01c58 - std[7d609349af90bec6]::panicking::panic_handler::{closure#0} [INFO] [stderr] 8: 0x74980a9f89a9 - std[7d609349af90bec6]::sys::backtrace::__rust_end_short_backtrace:: [INFO] [stderr] 9: 0x74980aa0372d - __rustc[69841a6cbc58d81d]::rust_begin_unwind [INFO] [stderr] 10: 0x749807638f9c - core[75ca2badb63c4514]::panicking::panic_fmt [INFO] [stderr] 11: 0x74980bde0110 - ::token_trees [INFO] [stderr] 12: 0x74980c61c314 - ::fully_expand_fragment [INFO] [stderr] 13: 0x74980c5e65d2 - ::expand_crate [INFO] [stderr] 14: 0x74980b6f0af3 - rustc_interface[903e43df8d6bd657]::passes::configure_and_expand [INFO] [stderr] 15: 0x74980c207658 - rustc_interface[903e43df8d6bd657]::passes::resolver_for_lowering_raw [INFO] [stderr] 16: 0x74980c2073cd - rustc_query_impl[8c5349e00d64015e]::plumbing::__rust_begin_short_backtrace::> [INFO] [stderr] 17: 0x74980c2073a7 - >::call_once [INFO] [stderr] 18: 0x74980c1ecb5f - rustc_query_system[d45be4fb383a0235]::query::plumbing::try_execute_query::>, false, false, false>, rustc_query_impl[8c5349e00d64015e]::plumbing::QueryCtxt, false> [INFO] [stderr] 19: 0x74980c1ec6bc - rustc_query_impl[8c5349e00d64015e]::query_impl::resolver_for_lowering_raw::get_query_non_incr::__rust_end_short_backtrace [INFO] [stderr] 20: 0x74980c37127b - , rustc_driver_impl[3f9d6dd912ac34bd]::run_compiler::{closure#0}::{closure#2}>::{closure#2} as core[75ca2badb63c4514]::ops::function::FnOnce<(&rustc_session[1e6875ba352dc1ba]::session::Session, rustc_middle[2342951a64deba5]::ty::context::CurrentGcx, alloc[d7482eb0f1d19161]::sync::Arc, &std[7d609349af90bec6]::sync::once_lock::OnceLock, &rustc_data_structures[c82a87ce5cdbfc92]::sync::worker_local::WorkerLocal, &rustc_data_structures[c82a87ce5cdbfc92]::sync::worker_local::WorkerLocal, rustc_driver_impl[3f9d6dd912ac34bd]::run_compiler::{closure#0}::{closure#2})>>::call_once::{shim:vtable#0} [INFO] [stderr] 21: 0x74980c25ac98 - rustc_interface[903e43df8d6bd657]::interface::run_compiler::<(), rustc_driver_impl[3f9d6dd912ac34bd]::run_compiler::{closure#0}>::{closure#1} [INFO] [stderr] 22: 0x74980c0eac4e - std[7d609349af90bec6]::sys::backtrace::__rust_begin_short_backtrace::::{closure#1}, ()>::{closure#0}, ()>::{closure#0}::{closure#0}, ()> [INFO] [stderr] 23: 0x74980c0eaa20 - ::{closure#1}, ()>::{closure#0}, ()>::{closure#0}::{closure#0}, ()>::{closure#1} as core[75ca2badb63c4514]::ops::function::FnOnce<()>>::call_once::{shim:vtable#0} [INFO] [stderr] 24: 0x74980c0ed138 - ::new::thread_start [INFO] [stderr] 25: 0x749805c8aaa4 - [INFO] [stderr] 26: 0x749805d17a64 - clone [INFO] [stderr] 27: 0x0 - [INFO] [stderr] [INFO] [stderr] error: 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: please make sure that you have updated to the latest nightly [INFO] [stderr] [INFO] [stderr] warning: the ICE couldn't be written to `/opt/rustwide/workdir/rustc-ice-2026-01-09T06_31_07-381.txt`: Read-only file system (os error 30) [INFO] [stderr] [INFO] [stderr] note: rustc 1.94.0-nightly (66388cc16 2026-01-08) 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] #0 [resolver_for_lowering_raw] getting the resolver for lowering [INFO] [stderr] end of query stack [INFO] [stderr] error: could not compile `engine` (lib test) [INFO] [stderr] [INFO] [stderr] Caused by: [INFO] [stderr] process didn't exit successfully: `/opt/rustwide/rustup-home/toolchains/66388cc165a6c4ac98c074dc9f0281ff23528c55/bin/rustc --crate-name engine --edition=2021 crates/engine/src/lib.rs --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --emit=dep-info,metadata -C embed-bitcode=no -C debuginfo=2 --test --cfg 'feature="default"' --check-cfg 'cfg(docsrs,test)' --check-cfg 'cfg(feature, values("default"))' -C metadata=c681f8839fa42278 -C extra-filename=-7983d5cd89897554 --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern proc_macro_utils=/opt/rustwide/target/debug/deps/libproc_macro_utils-c2c181ebb8757e4b.so --extern rand=/opt/rustwide/target/debug/deps/librand-ae06b977a18f10ee.rmeta --cap-lints=forbid` (exit status: 101) [INFO] [stderr] warning: build failed, waiting for other jobs to finish... [INFO] [stdout] warning: unexpected `cfg` condition value: `dbg-assert` [INFO] [stdout] --> crates/engine/src/utils/log.rs:1:7 [INFO] [stdout] | [INFO] [stdout] 1 | #[cfg(feature = "dbg-assert")] [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: expected values for `feature` are: `default` [INFO] [stdout] = help: consider adding `dbg-assert` as a feature in `Cargo.toml` [INFO] [stdout] = note: see for more information about checking conditional configuration [INFO] [stdout] = note: `#[warn(unexpected_cfgs)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unexpected `cfg` condition value: `dbg-assert` [INFO] [stdout] --> crates/engine/src/utils/log.rs:8:11 [INFO] [stdout] | [INFO] [stdout] 8 | #[cfg(not(feature = "dbg-assert"))] [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: expected values for `feature` are: `default` [INFO] [stdout] = help: consider adding `dbg-assert` as a feature in `Cargo.toml` [INFO] [stdout] = note: see for more information about checking conditional configuration [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: creating a shared reference to mutable static [INFO] [stdout] --> crates/engine/src/move_gen/magics.rs:52:30 [INFO] [stdout] | [INFO] [stdout] 52 | let entry = unsafe { ROOK_MAGICS.get_unchecked(square.index()) }; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ shared reference to mutable static [INFO] [stdout] | [INFO] [stdout] = note: for more information, see [INFO] [stdout] = note: shared references to mutable statics are dangerous; it's undefined behavior if the static is mutated or if a mutable reference is created for it while the shared reference lives [INFO] [stdout] = note: `#[warn(static_mut_refs)]` (part of `#[warn(rust_2024_compatibility)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: creating a shared reference to mutable static [INFO] [stdout] --> crates/engine/src/move_gen/magics.rs:62:30 [INFO] [stdout] | [INFO] [stdout] 62 | let entry = unsafe { BISHOP_MAGICS.get_unchecked(square.index()) }; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ shared reference to mutable static [INFO] [stdout] | [INFO] [stdout] = note: for more information, see [INFO] [stdout] = note: shared references to mutable statics are dangerous; it's undefined behavior if the static is mutated or if a mutable reference is created for it while the shared reference lives [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: creating a mutable reference to mutable static [INFO] [stdout] --> crates/engine/src/move_gen/magics.rs:195:13 [INFO] [stdout] | [INFO] [stdout] 195 | BISHOP_MAGICS.as_mut_ptr(), [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^ mutable reference to mutable static [INFO] [stdout] | [INFO] [stdout] = note: for more information, see [INFO] [stdout] = note: mutable references to mutable statics are dangerous; it's undefined behavior if any other pointer to the static is used or if any other reference is created for the static while the mutable reference lives [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: creating a mutable reference to mutable static [INFO] [stdout] --> crates/engine/src/move_gen/magics.rs:196:13 [INFO] [stdout] | [INFO] [stdout] 196 | BISHOP_TABLE.as_mut_ptr(), [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^ mutable reference to mutable static [INFO] [stdout] | [INFO] [stdout] = note: for more information, see [INFO] [stdout] = note: mutable references to mutable statics are dangerous; it's undefined behavior if any other pointer to the static is used or if any other reference is created for the static while the mutable reference lives [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: creating a mutable reference to mutable static [INFO] [stdout] --> crates/engine/src/move_gen/magics.rs:201:13 [INFO] [stdout] | [INFO] [stdout] 201 | ROOK_MAGICS.as_mut_ptr(), [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^ mutable reference to mutable static [INFO] [stdout] | [INFO] [stdout] = note: for more information, see [INFO] [stdout] = note: mutable references to mutable statics are dangerous; it's undefined behavior if any other pointer to the static is used or if any other reference is created for the static while the mutable reference lives [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: creating a mutable reference to mutable static [INFO] [stdout] --> crates/engine/src/move_gen/magics.rs:202:13 [INFO] [stdout] | [INFO] [stdout] 202 | ROOK_TABLE.as_mut_ptr(), [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^ mutable reference to mutable static [INFO] [stdout] | [INFO] [stdout] = note: for more information, see [INFO] [stdout] = note: mutable references to mutable statics are dangerous; it's undefined behavior if any other pointer to the static is used or if any other reference is created for the static while the mutable reference lives [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unnecessary transmute [INFO] [stdout] --> crates/engine/src/move_gen/prng.rs:23:38 [INFO] [stdout] | [INFO] [stdout] 23 | let bits: [u8; 8] = unsafe { std::mem::transmute(self.gen() ^ self.gen()) }; [INFO] [stdout] | -------------------^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: replace this with: `u64::to_ne_bytes` [INFO] [stdout] | [INFO] [stdout] = help: there's also `to_le_bytes` and `to_be_bytes` if you expect a particular byte order [INFO] [stdout] = note: `#[warn(unnecessary_transmutes)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: creating a mutable reference to mutable static [INFO] [stdout] --> crates/engine/src/precomp.rs:231:31 [INFO] [stdout] | [INFO] [stdout] 231 | for (i, mask) in unsafe { ADJACENT_FILE_MASK.iter_mut().enumerate() } { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ mutable reference to mutable static [INFO] [stdout] | [INFO] [stdout] = note: for more information, see [INFO] [stdout] = note: mutable references to mutable statics are dangerous; it's undefined behavior if any other pointer to the static is used or if any other reference is created for the static while the mutable reference lives [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: creating a mutable reference to mutable static [INFO] [stdout] --> crates/engine/src/precomp.rs:237:31 [INFO] [stdout] | [INFO] [stdout] 237 | for (i, mask) in unsafe { TRIPLE_FILE_MASK.iter_mut().enumerate() } { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ mutable reference to mutable static [INFO] [stdout] | [INFO] [stdout] = note: for more information, see [INFO] [stdout] = note: mutable references to mutable statics are dangerous; it's undefined behavior if any other pointer to the static is used or if any other reference is created for the static while the mutable reference lives [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: creating a mutable reference to mutable static [INFO] [stdout] --> crates/engine/src/precomp.rs:268:31 [INFO] [stdout] | [INFO] [stdout] 268 | for (i, mask) in unsafe { KING_SAFETY_MASK.iter_mut().enumerate() } { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ mutable reference to mutable static [INFO] [stdout] | [INFO] [stdout] = note: for more information, see [INFO] [stdout] = note: mutable references to mutable statics are dangerous; it's undefined behavior if any other pointer to the static is used or if any other reference is created for the static while the mutable reference lives [INFO] [stdout] [INFO] [stdout] [INFO] running `Command { std: "docker" "inspect" "f9968428ff931a6d88c4067299f33f20d19f8d2e1402631d28b01d494d834249", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "f9968428ff931a6d88c4067299f33f20d19f8d2e1402631d28b01d494d834249", kill_on_drop: false }` [INFO] [stdout] f9968428ff931a6d88c4067299f33f20d19f8d2e1402631d28b01d494d834249