[INFO] fetching crate scholar 0.1.7...
[INFO] checking scholar-0.1.7 against master#bbe853615821442ef11d6cd42a30a73432b38d89 for pr-154205
[INFO] extracting crate scholar 0.1.7 into /workspace/builds/worker-7-tc1/source
[INFO] started tweaking crates.io crate scholar 0.1.7
[INFO] finished tweaking crates.io crate scholar 0.1.7
[INFO] tweaked toml for crates.io crate scholar 0.1.7 written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate scholar 0.1.7 on toolchain bbe853615821442ef11d6cd42a30a73432b38d89
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+bbe853615821442ef11d6cd42a30a73432b38d89" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate scholar 0.1.7 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" "+bbe853615821442ef11d6cd42a30a73432b38d89" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded serde_derive v1.0.106
[INFO] [stderr]   Downloaded thiserror-impl v1.0.15
[INFO] [stderr]   Downloaded thiserror v1.0.15
[INFO] [stderr]   Downloaded bincode v1.2.1
[INFO] [stderr]   Downloaded proc-macro-hack v0.5.15
[INFO] [stderr]   Downloaded clicolors-control v1.0.1
[INFO] [stderr]   Downloaded paste-impl v0.1.10
[INFO] [stderr]   Downloaded hermit-abi v0.1.11
[INFO] [stderr]   Downloaded serde v1.0.106
[INFO] [stderr]   Downloaded csv-core v0.1.10
[INFO] [stderr]   Downloaded anyhow v1.0.28
[INFO] [stderr]   Downloaded ryu v1.0.3
[INFO] [stderr]   Downloaded termios v0.3.2
[INFO] [stderr]   Downloaded libm v0.2.1
[INFO] [stderr]   Downloaded regex-automata v0.1.9
[INFO] [stderr]   Downloaded generic-array v0.13.2
[INFO] [stderr]   Downloaded typenum v1.12.0
[INFO] [stderr]   Downloaded syn v1.0.17
[INFO] [stderr]   Downloaded unicode-width v0.1.7
[INFO] [stderr]   Downloaded console v0.10.0
[INFO] [stderr]   Downloaded indicatif v0.14.0
[INFO] [stderr]   Downloaded nalgebra v0.21.0
[INFO] [stderr]   Downloaded regex v1.3.6
[INFO] [stderr]   Downloaded matrixmultiply v0.2.3
[INFO] [stderr]   Downloaded regex-syntax v0.6.17
[INFO] [stderr]   Downloaded num-integer v0.1.42
[INFO] [stderr]   Downloaded simba v0.1.2
[INFO] [stderr]   Downloaded bstr v0.2.12
[INFO] [stderr]   Downloaded quote v1.0.3
[INFO] [stderr]   Downloaded proc-macro2 v1.0.10
[INFO] [stderr]   Downloaded paste v0.1.10
[INFO] [stderr]   Downloaded number_prefix v0.3.0
[INFO] [stderr]   Downloaded libc v0.2.69
[INFO] [stderr]   Downloaded csv v1.1.3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+bbe853615821442ef11d6cd42a30a73432b38d89" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 226db9373fbb08d4269dc6d9b05049c543eaa5d07bcdc9ac4f5ac1596ded77aa
[INFO] running `Command { std: "docker" "start" "-a" "226db9373fbb08d4269dc6d9b05049c543eaa5d07bcdc9ac4f5ac1596ded77aa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "226db9373fbb08d4269dc6d9b05049c543eaa5d07bcdc9ac4f5ac1596ded77aa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "226db9373fbb08d4269dc6d9b05049c543eaa5d07bcdc9ac4f5ac1596ded77aa", kill_on_drop: false }`
[INFO] [stdout] 226db9373fbb08d4269dc6d9b05049c543eaa5d07bcdc9ac4f5ac1596ded77aa
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+bbe853615821442ef11d6cd42a30a73432b38d89" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c9d4e7143d084c8b8093c0dcf7719d4339738ef7af138a9fbc74cea22d08e1e3
[INFO] running `Command { std: "docker" "start" "-a" "c9d4e7143d084c8b8093c0dcf7719d4339738ef7af138a9fbc74cea22d08e1e3", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.10
[INFO] [stderr]    Compiling syn v1.0.17
[INFO] [stderr]    Compiling libc v0.2.69
[INFO] [stderr]    Compiling libm v0.2.1
[INFO] [stderr]    Compiling serde v1.0.106
[INFO] [stderr]    Compiling getrandom v0.1.14
[INFO] [stderr]    Compiling num-traits v0.2.11
[INFO] [stderr]    Compiling memchr v2.3.3
[INFO] [stderr]    Compiling num-complex v0.2.4
[INFO] [stderr]    Compiling num-integer v0.1.42
[INFO] [stderr]     Checking ppv-lite86 v0.2.6
[INFO] [stderr]    Compiling proc-macro-hack v0.5.15
[INFO] [stderr]    Compiling typenum v1.12.0
[INFO] [stderr]    Compiling num-rational v0.2.4
[INFO] [stderr]    Compiling ryu v1.0.3
[INFO] [stderr]     Checking regex-syntax v0.6.17
[INFO] [stderr]     Checking regex-automata v0.1.9
[INFO] [stderr]     Checking unicode-width v0.1.7
[INFO] [stderr]     Checking matrixmultiply v0.2.3
[INFO] [stderr]     Checking csv-core v0.1.10
[INFO] [stderr]    Compiling quote v1.0.3
[INFO] [stderr]     Checking clicolors-control v1.0.1
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking termios v0.3.2
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]    Compiling anyhow v1.0.28
[INFO] [stderr]     Checking number_prefix v0.3.0
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]     Checking approx v0.3.2
[INFO] [stderr]     Checking regex v1.3.6
[INFO] [stderr]     Checking generic-array v0.13.2
[INFO] [stderr]     Checking rand_distr v0.2.2
[INFO] [stderr]     Checking console v0.10.0
[INFO] [stderr]     Checking indicatif v0.14.0
[INFO] [stderr]    Compiling serde_derive v1.0.106
[INFO] [stderr]    Compiling paste-impl v0.1.10
[INFO] [stderr]    Compiling thiserror-impl v1.0.15
[INFO] [stderr]     Checking paste v0.1.10
[INFO] [stderr]     Checking thiserror v1.0.15
[INFO] [stderr]     Checking bstr v0.2.12
[INFO] [stderr]     Checking bincode v1.2.1
[INFO] [stderr]     Checking simba v0.1.2
[INFO] [stderr]     Checking csv v1.1.3
[INFO] [stderr]     Checking nalgebra v0.21.0
[INFO] [stderr] 
[INFO] [stderr] thread 'rustc' (729) panicked at /rustc-dev/bbe853615821442ef11d6cd42a30a73432b38d89/compiler/rustc_infer/src/infer/relate/generalize.rs:294:44:
[INFO] [stderr] called `Result::unwrap_err()` on an `Ok` value: base::array_storage::ArrayStorage<base::matrix::Matrix<?20t, base::dimension::U1, base::dimension::U2, ?21t>, base::dimension::U1, base::dimension::U2>
[INFO] [stderr] stack backtrace:
[INFO] [stderr]    0:     0x785ff478428b - <<std[e4a598c2d7907cc1]::sys::backtrace::BacktraceLock>::print::DisplayBacktrace as core[1fe3e66427eb3788]::fmt::Display>::fmt
[INFO] [stderr]    1:     0x785ff4e2e8c8 - core[1fe3e66427eb3788]::fmt::write
[INFO] [stderr]    2:     0x785ff479b296 - <std[e4a598c2d7907cc1]::sys::stdio::unix::Stderr as std[e4a598c2d7907cc1]::io::Write>::write_fmt
[INFO] [stderr]    3:     0x785ff475a298 - std[e4a598c2d7907cc1]::panicking::default_hook::{closure#0}
[INFO] [stderr]    4:     0x785ff4777693 - std[e4a598c2d7907cc1]::panicking::default_hook
[INFO] [stderr]    5:     0x785ff377391c - std[e4a598c2d7907cc1]::panicking::update_hook::<alloc[70fc36a7209dfb33]::boxed::Box<rustc_driver_impl[d43592d152bd0f3]::install_ice_hook::{closure#1}>>::{closure#0}
[INFO] [stderr]    6:     0x785ff4777972 - std[e4a598c2d7907cc1]::panicking::panic_with_hook
[INFO] [stderr]    7:     0x785ff475a358 - std[e4a598c2d7907cc1]::panicking::panic_handler::{closure#0}
[INFO] [stderr]    8:     0x785ff4751089 - std[e4a598c2d7907cc1]::sys::backtrace::__rust_end_short_backtrace::<std[e4a598c2d7907cc1]::panicking::panic_handler::{closure#0}, !>
[INFO] [stderr]    9:     0x785ff475bdbd - __rustc[13b91de63b82f5e3]::rust_begin_unwind
[INFO] [stderr]   10:     0x785ff0f0baec - core[1fe3e66427eb3788]::panicking::panic_fmt
[INFO] [stderr]   11:     0x785ff102dcd2 - core[1fe3e66427eb3788]::result::unwrap_failed
[INFO] [stderr]   12:     0x785ff5b57cca - <rustc_infer[6634b8aee1b7b396]::infer::InferCtxt>::instantiate_ty_var::<rustc_type_ir[ff18b735164bb08e]::relate::solver_relating::SolverRelating<rustc_infer[6634b8aee1b7b396]::infer::InferCtxt, rustc_middle[c4269b454f0100bc]::ty::context::TyCtxt>>
[INFO] [stderr]   13:     0x785ff5b59dc9 - <rustc_middle[c4269b454f0100bc]::ty::generic_args::GenericArg as rustc_type_ir[ff18b735164bb08e]::relate::Relate<rustc_middle[c4269b454f0100bc]::ty::context::TyCtxt>>::relate::<rustc_type_ir[ff18b735164bb08e]::relate::solver_relating::SolverRelating<rustc_infer[6634b8aee1b7b396]::infer::InferCtxt, rustc_middle[c4269b454f0100bc]::ty::context::TyCtxt>>
[INFO] [stderr]   14:     0x785ff5b5a92d - <core[1fe3e66427eb3788]::result::Result<rustc_middle[c4269b454f0100bc]::ty::generic_args::GenericArg, rustc_type_ir[ff18b735164bb08e]::error::TypeError<rustc_middle[c4269b454f0100bc]::ty::context::TyCtxt>> as rustc_type_ir[ff18b735164bb08e]::interner::CollectAndApply<rustc_middle[c4269b454f0100bc]::ty::generic_args::GenericArg, &rustc_middle[c4269b454f0100bc]::ty::list::RawList<(), rustc_middle[c4269b454f0100bc]::ty::generic_args::GenericArg>>>::collect_and_apply::<core[1fe3e66427eb3788]::iter::adapters::map::Map<core[1fe3e66427eb3788]::iter::adapters::zip::Zip<core[1fe3e66427eb3788]::iter::adapters::copied::Copied<core[1fe3e66427eb3788]::slice::iter::Iter<rustc_middle[c4269b454f0100bc]::ty::generic_args::GenericArg>>, core[1fe3e66427eb3788]::iter::adapters::copied::Copied<core[1fe3e66427eb3788]::slice::iter::Iter<rustc_middle[c4269b454f0100bc]::ty::generic_args::GenericArg>>>, rustc_type_ir[ff18b735164bb08e]::relate::relate_args_invariantly<rustc_middle[c4269b454f0100bc]::ty::context::TyCtxt, rustc_type_ir[ff18b735164bb08e]::relate::solver_relating::SolverRelating<rustc_infer[6634b8aee1b7b396]::infer::InferCtxt, rustc_middle[c4269b454f0100bc]::ty::context::TyCtxt>>::{closure#0}>, <rustc_middle[c4269b454f0100bc]::ty::context::TyCtxt>::mk_args_from_iter<core[1fe3e66427eb3788]::iter::adapters::map::Map<core[1fe3e66427eb3788]::iter::adapters::zip::Zip<core[1fe3e66427eb3788]::iter::adapters::copied::Copied<core[1fe3e66427eb3788]::slice::iter::Iter<rustc_middle[c4269b454f0100bc]::ty::generic_args::GenericArg>>, core[1fe3e66427eb3788]::iter::adapters::copied::Copied<core[1fe3e66427eb3788]::slice::iter::Iter<rustc_middle[c4269b454f0100bc]::ty::generic_args::GenericArg>>>, rustc_type_ir[ff18b735164bb08e]::relate::relate_args_invariantly<rustc_middle[c4269b454f0100bc]::ty::context::TyCtxt, rustc_type_ir[ff18b735164bb08e]::relate::solver_relating::SolverRelating<rustc_infer[6634b8aee1b7b396]::infer::InferCtxt, rustc_middle[c4269b454f0100bc]::ty::context::TyCtxt>>::{closure#0}>, core[1fe3e66427eb3788]::result::Result<rustc_middle[c4269b454f0100bc]::ty::generic_args::GenericArg, rustc_type_ir[ff18b735164bb08e]::error::TypeError<rustc_middle[c4269b454f0100bc]::ty::context::TyCtxt>>>::{closure#0}>
[INFO] [stderr]   15:     0x785ff5b5b08e - rustc_type_ir[ff18b735164bb08e]::relate::structurally_relate_tys::<rustc_middle[c4269b454f0100bc]::ty::context::TyCtxt, rustc_type_ir[ff18b735164bb08e]::relate::solver_relating::SolverRelating<rustc_infer[6634b8aee1b7b396]::infer::InferCtxt, rustc_middle[c4269b454f0100bc]::ty::context::TyCtxt>>
[INFO] [stderr]   16:     0x785ff5b5808b - <rustc_type_ir[ff18b735164bb08e]::relate::solver_relating::SolverRelating<rustc_infer[6634b8aee1b7b396]::infer::InferCtxt, rustc_middle[c4269b454f0100bc]::ty::context::TyCtxt> as rustc_type_ir[ff18b735164bb08e]::relate::TypeRelation<rustc_middle[c4269b454f0100bc]::ty::context::TyCtxt>>::tys
[INFO] [stderr]   17:     0x785ff5b57a3c - <rustc_infer[6634b8aee1b7b396]::infer::InferCtxt>::instantiate_ty_var::<rustc_type_ir[ff18b735164bb08e]::relate::solver_relating::SolverRelating<rustc_infer[6634b8aee1b7b396]::infer::InferCtxt, rustc_middle[c4269b454f0100bc]::ty::context::TyCtxt>>
[INFO] [stderr]   18:     0x785ff5b58118 - <rustc_type_ir[ff18b735164bb08e]::relate::solver_relating::SolverRelating<rustc_infer[6634b8aee1b7b396]::infer::InferCtxt, rustc_middle[c4269b454f0100bc]::ty::context::TyCtxt> as rustc_type_ir[ff18b735164bb08e]::relate::TypeRelation<rustc_middle[c4269b454f0100bc]::ty::context::TyCtxt>>::tys
[INFO] [stderr]   19:     0x785ff5b5b393 - rustc_type_ir[ff18b735164bb08e]::relate::structurally_relate_tys::<rustc_middle[c4269b454f0100bc]::ty::context::TyCtxt, rustc_type_ir[ff18b735164bb08e]::relate::solver_relating::SolverRelating<rustc_infer[6634b8aee1b7b396]::infer::InferCtxt, rustc_middle[c4269b454f0100bc]::ty::context::TyCtxt>>
[INFO] [stderr]   20:     0x785ff5b5808b - <rustc_type_ir[ff18b735164bb08e]::relate::solver_relating::SolverRelating<rustc_infer[6634b8aee1b7b396]::infer::InferCtxt, rustc_middle[c4269b454f0100bc]::ty::context::TyCtxt> as rustc_type_ir[ff18b735164bb08e]::relate::TypeRelation<rustc_middle[c4269b454f0100bc]::ty::context::TyCtxt>>::tys
[INFO] [stderr]   21:     0x785ff5b5a637 - <core[1fe3e66427eb3788]::result::Result<rustc_middle[c4269b454f0100bc]::ty::generic_args::GenericArg, rustc_type_ir[ff18b735164bb08e]::error::TypeError<rustc_middle[c4269b454f0100bc]::ty::context::TyCtxt>> as rustc_type_ir[ff18b735164bb08e]::interner::CollectAndApply<rustc_middle[c4269b454f0100bc]::ty::generic_args::GenericArg, &rustc_middle[c4269b454f0100bc]::ty::list::RawList<(), rustc_middle[c4269b454f0100bc]::ty::generic_args::GenericArg>>>::collect_and_apply::<core[1fe3e66427eb3788]::iter::adapters::map::Map<core[1fe3e66427eb3788]::iter::adapters::zip::Zip<core[1fe3e66427eb3788]::iter::adapters::copied::Copied<core[1fe3e66427eb3788]::slice::iter::Iter<rustc_middle[c4269b454f0100bc]::ty::generic_args::GenericArg>>, core[1fe3e66427eb3788]::iter::adapters::copied::Copied<core[1fe3e66427eb3788]::slice::iter::Iter<rustc_middle[c4269b454f0100bc]::ty::generic_args::GenericArg>>>, rustc_type_ir[ff18b735164bb08e]::relate::relate_args_invariantly<rustc_middle[c4269b454f0100bc]::ty::context::TyCtxt, rustc_type_ir[ff18b735164bb08e]::relate::solver_relating::SolverRelating<rustc_infer[6634b8aee1b7b396]::infer::InferCtxt, rustc_middle[c4269b454f0100bc]::ty::context::TyCtxt>>::{closure#0}>, <rustc_middle[c4269b454f0100bc]::ty::context::TyCtxt>::mk_args_from_iter<core[1fe3e66427eb3788]::iter::adapters::map::Map<core[1fe3e66427eb3788]::iter::adapters::zip::Zip<core[1fe3e66427eb3788]::iter::adapters::copied::Copied<core[1fe3e66427eb3788]::slice::iter::Iter<rustc_middle[c4269b454f0100bc]::ty::generic_args::GenericArg>>, core[1fe3e66427eb3788]::iter::adapters::copied::Copied<core[1fe3e66427eb3788]::slice::iter::Iter<rustc_middle[c4269b454f0100bc]::ty::generic_args::GenericArg>>>, rustc_type_ir[ff18b735164bb08e]::relate::relate_args_invariantly<rustc_middle[c4269b454f0100bc]::ty::context::TyCtxt, rustc_type_ir[ff18b735164bb08e]::relate::solver_relating::SolverRelating<rustc_infer[6634b8aee1b7b396]::infer::InferCtxt, rustc_middle[c4269b454f0100bc]::ty::context::TyCtxt>>::{closure#0}>, core[1fe3e66427eb3788]::result::Result<rustc_middle[c4269b454f0100bc]::ty::generic_args::GenericArg, rustc_type_ir[ff18b735164bb08e]::error::TypeError<rustc_middle[c4269b454f0100bc]::ty::context::TyCtxt>>>::{closure#0}>
[INFO] [stderr]   22:     0x785ff4e6c572 - <rustc_infer[6634b8aee1b7b396]::infer::at::At>::eq_trace::<rustc_type_ir[ff18b735164bb08e]::predicate::TraitRef<rustc_middle[c4269b454f0100bc]::ty::context::TyCtxt>>
[INFO] [stderr]   23:     0x785ff584b094 - rustc_trait_selection[ac705ff08155446b]::traits::coherence::overlap
[INFO] [stderr]   24:     0x785ff24bae07 - <rustc_middle[c4269b454f0100bc]::traits::specialization_graph::Children as rustc_trait_selection[ac705ff08155446b]::traits::specialize::specialization_graph::ChildrenExt>::insert
[INFO] [stderr]   25:     0x785ff5e13cf5 - <rustc_middle[c4269b454f0100bc]::traits::specialization_graph::Graph as rustc_trait_selection[ac705ff08155446b]::traits::specialize::specialization_graph::GraphExt>::insert
[INFO] [stderr]   26:     0x785ff4e4a8f4 - rustc_trait_selection[ac705ff08155446b]::traits::specialize::specialization_graph_provider
[INFO] [stderr]   27:     0x785ff4e4e40d - rustc_query_impl[1156795c34adb5e8]::execution::try_execute_query::<rustc_middle[c4269b454f0100bc]::query::caches::DefIdCache<rustc_middle[c4269b454f0100bc]::query::erase::ErasedData<[u8; 8usize]>>, false>
[INFO] [stderr]   28:     0x785ff51d7e50 - rustc_query_impl[1156795c34adb5e8]::query_impl::specialization_graph_of::execute_query_non_incr::__rust_end_short_backtrace
[INFO] [stderr]   29:     0x785ff51db587 - rustc_hir_analysis[a521d9d2e7710133]::coherence::coherent_trait
[INFO] [stderr]   30:     0x785ff51db29d - rustc_query_impl[1156795c34adb5e8]::query_impl::coherent_trait::invoke_provider_fn::__rust_begin_short_backtrace
[INFO] [stderr]   31:     0x785ff5207f6c - rustc_query_impl[1156795c34adb5e8]::execution::try_execute_query::<rustc_middle[c4269b454f0100bc]::query::caches::DefIdCache<rustc_middle[c4269b454f0100bc]::query::erase::ErasedData<[u8; 1usize]>>, false>
[INFO] [stderr]   32:     0x785ff52070c0 - rustc_query_impl[1156795c34adb5e8]::query_impl::coherent_trait::execute_query_non_incr::__rust_end_short_backtrace
[INFO] [stderr]   33:     0x785ff542baee - rustc_hir_analysis[a521d9d2e7710133]::check::check::check_item_type
[INFO] [stderr]   34:     0x785ff5429fa6 - rustc_hir_analysis[a521d9d2e7710133]::check::wfcheck::check_well_formed
[INFO] [stderr]   35:     0x785ff5429f87 - rustc_query_impl[1156795c34adb5e8]::query_impl::check_well_formed::invoke_provider_fn::__rust_begin_short_backtrace
[INFO] [stderr]   36:     0x785ff54295a4 - rustc_query_impl[1156795c34adb5e8]::execution::try_execute_query::<rustc_data_structures[a59c4e41da927823]::vec_cache::VecCache<rustc_span[cbb9a2e5c824ea47]::def_id::LocalDefId, rustc_middle[c4269b454f0100bc]::query::erase::ErasedData<[u8; 1usize]>, rustc_middle[c4269b454f0100bc]::dep_graph::graph::DepNodeIndex>, false>
[INFO] [stderr]   37:     0x785ff542933b - rustc_query_impl[1156795c34adb5e8]::query_impl::check_well_formed::execute_query_non_incr::__rust_end_short_backtrace
[INFO] [stderr]   38:     0x785ff5425ab3 - rustc_hir_analysis[a521d9d2e7710133]::check::wfcheck::check_type_wf
[INFO] [stderr]   39:     0x785ff54259af - rustc_query_impl[1156795c34adb5e8]::query_impl::check_type_wf::invoke_provider_fn::__rust_begin_short_backtrace
[INFO] [stderr]   40:     0x785ff604bb90 - rustc_query_impl[1156795c34adb5e8]::execution::try_execute_query::<rustc_middle[c4269b454f0100bc]::query::caches::SingleCache<rustc_middle[c4269b454f0100bc]::query::erase::ErasedData<[u8; 1usize]>>, false>
[INFO] [stderr]   41:     0x785ff604b969 - rustc_query_impl[1156795c34adb5e8]::query_impl::check_type_wf::execute_query_non_incr::__rust_end_short_backtrace
[INFO] [stderr]   42:     0x785ff574bfd5 - rustc_hir_analysis[a521d9d2e7710133]::check_crate
[INFO] [stderr]   43:     0x785ff4ee481a - rustc_interface[aeb4b536ec403cb3]::passes::analysis
[INFO] [stderr]   44:     0x785ff604e309 - rustc_query_impl[1156795c34adb5e8]::execution::try_execute_query::<rustc_middle[c4269b454f0100bc]::query::caches::SingleCache<rustc_middle[c4269b454f0100bc]::query::erase::ErasedData<[u8; 0usize]>>, false>
[INFO] [stderr]   45:     0x785ff604df75 - rustc_query_impl[1156795c34adb5e8]::query_impl::analysis::execute_query_non_incr::__rust_end_short_backtrace
[INFO] [stderr]   46:     0x785ff60b4214 - rustc_interface[aeb4b536ec403cb3]::interface::run_compiler::<(), rustc_driver_impl[d43592d152bd0f3]::run_compiler::{closure#0}>::{closure#1}
[INFO] [stderr]   47:     0x785ff603663e - std[e4a598c2d7907cc1]::sys::backtrace::__rust_begin_short_backtrace::<rustc_interface[aeb4b536ec403cb3]::util::run_in_thread_with_globals<rustc_interface[aeb4b536ec403cb3]::util::run_in_thread_pool_with_globals<rustc_interface[aeb4b536ec403cb3]::interface::run_compiler<(), rustc_driver_impl[d43592d152bd0f3]::run_compiler::{closure#0}>::{closure#1}, ()>::{closure#0}, ()>::{closure#0}::{closure#0}, ()>
[INFO] [stderr]   48:     0x785ff6036ee0 - <std[e4a598c2d7907cc1]::thread::lifecycle::spawn_unchecked<rustc_interface[aeb4b536ec403cb3]::util::run_in_thread_with_globals<rustc_interface[aeb4b536ec403cb3]::util::run_in_thread_pool_with_globals<rustc_interface[aeb4b536ec403cb3]::interface::run_compiler<(), rustc_driver_impl[d43592d152bd0f3]::run_compiler::{closure#0}>::{closure#1}, ()>::{closure#0}, ()>::{closure#0}::{closure#0}, ()>::{closure#1} as core[1fe3e66427eb3788]::ops::function::FnOnce<()>>::call_once::{shim:vtable#0}
[INFO] [stderr]   49:     0x785ff6037d6c - <std[e4a598c2d7907cc1]::sys::thread::unix::Thread>::new::thread_start
[INFO] [stderr]   50:     0x785fefa8aaa4 - <unknown>
[INFO] [stderr]   51:     0x785fefb17a64 - clone
[INFO] [stderr]   52:                0x0 - <unknown>
[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/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/nalgebra-0.21.0/rustc-ice-2026-03-24T07_19_23-727.txt`: Read-only file system (os error 30)
[INFO] [stderr] 
[INFO] [stderr] note: rustc 1.96.0-nightly (bbe853615 2026-03-23) running on x86_64-unknown-linux-gnu
[INFO] [stderr] 
[INFO] [stderr] note: compiler flags: --crate-type lib -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 [specialization_graph_of] building specialization graph of trait `core::convert::From`
[INFO] [stderr] #1 [coherent_trait] coherence checking all impls of trait `core::convert::From`
[INFO] [stderr] #2 [check_well_formed] checking that `base::conversion::<impl at /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/nalgebra-0.21.0/src/base/conversion.rs:111:9: 113:61>` is well-formed
[INFO] [stderr] #3 [check_type_wf] checking that types are well-formed
[INFO] [stderr] #4 [analysis] running analysis passes on crate `nalgebra`
[INFO] [stderr] end of query stack
[INFO] [stderr] error: could not compile `nalgebra` (lib)
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/rustwide/rustup-home/toolchains/bbe853615821442ef11d6cd42a30a73432b38d89/bin/rustc --crate-name nalgebra --edition=2018 /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/nalgebra-0.21.0/src/lib.rs --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --crate-type lib --emit=dep-info,metadata -C embed-bitcode=no -C debuginfo=2 --cfg 'feature="default"' --cfg 'feature="matrixmultiply"' --cfg 'feature="rand_distr"' --cfg 'feature="serde"' --cfg 'feature="serde-serialize"' --cfg 'feature="serde_derive"' --cfg 'feature="std"' --check-cfg 'cfg(docsrs,test)' --check-cfg 'cfg(feature, values("abomonation", "abomonation-serialize", "alga", "alloc", "arbitrary", "debug", "default", "io", "matrixmultiply", "mint", "pest", "pest_derive", "quickcheck", "rand_distr", "serde", "serde-serialize", "serde_derive", "sparse", "std", "stdweb"))' -C metadata=797e2b489ff8940f -C extra-filename=-b7226aebc9547371 --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern approx=/opt/rustwide/target/debug/deps/libapprox-e2b5009c44e64aca.rmeta --extern generic_array=/opt/rustwide/target/debug/deps/libgeneric_array-b28a78b93d7c4a03.rmeta --extern matrixmultiply=/opt/rustwide/target/debug/deps/libmatrixmultiply-4497e0885b2ab08e.rmeta --extern num_complex=/opt/rustwide/target/debug/deps/libnum_complex-f269c98f3211f78f.rmeta --extern num_rational=/opt/rustwide/target/debug/deps/libnum_rational-109d64087d16526b.rmeta --extern num_traits=/opt/rustwide/target/debug/deps/libnum_traits-dde76deec8c1a6e1.rmeta --extern rand=/opt/rustwide/target/debug/deps/librand-c33d29a8b1fd103c.rmeta --extern rand_distr=/opt/rustwide/target/debug/deps/librand_distr-711bdbb629f00fa0.rmeta --extern serde=/opt/rustwide/target/debug/deps/libserde-e4b392c0aaf82f65.rmeta --extern serde_derive=/opt/rustwide/target/debug/deps/libserde_derive-cf5c221e24401fbf.so --extern simba=/opt/rustwide/target/debug/deps/libsimba-c0ab9b42d9c8c11e.rmeta --extern typenum=/opt/rustwide/target/debug/deps/libtypenum-6d766b4cc2ce5f3e.rmeta --cap-lints allow --cap-lints=forbid` (exit status: 101)
[INFO] running `Command { std: "docker" "inspect" "c9d4e7143d084c8b8093c0dcf7719d4339738ef7af138a9fbc74cea22d08e1e3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c9d4e7143d084c8b8093c0dcf7719d4339738ef7af138a9fbc74cea22d08e1e3", kill_on_drop: false }`
[INFO] [stdout] c9d4e7143d084c8b8093c0dcf7719d4339738ef7af138a9fbc74cea22d08e1e3