[INFO] cloning repository https://github.com/Vurich/quadratic-decomposition [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Vurich/quadratic-decomposition" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FVurich%2Fquadratic-decomposition", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FVurich%2Fquadratic-decomposition'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 03d024c209bf7827e74f976f6a65988a510edc38 [INFO] documenting Vurich/quadratic-decomposition against beta-2026-04-21 for beta-1.96-rustdoc-1 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FVurich%2Fquadratic-decomposition" "/workspace/builds/worker-2-tc2/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc2/source'... [INFO] [stderr] done. [INFO] started tweaking git repo https://github.com/Vurich/quadratic-decomposition [INFO] finished tweaking git repo https://github.com/Vurich/quadratic-decomposition [INFO] tweaked toml for git repo https://github.com/Vurich/quadratic-decomposition written to /workspace/builds/worker-2-tc2/source/Cargo.toml [INFO] validating manifest of git repo https://github.com/Vurich/quadratic-decomposition on toolchain beta-2026-04-21 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2026-04-21" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] crate git repo https://github.com/Vurich/quadratic-decomposition 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" "+beta-2026-04-21" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Downloading crates ... [INFO] [stderr] Downloaded xml-rs v0.8.3 [INFO] [stderr] Downloaded wayland-commons v0.28.2 [INFO] [stderr] Downloaded wayland-scanner v0.28.2 [INFO] [stderr] Downloaded wayland-sys v0.28.2 [INFO] [stderr] Downloaded wayland-client v0.28.2 [INFO] [stderr] Downloaded memoffset v0.5.6 [INFO] [stderr] Downloaded rusttype v0.9.2 [INFO] [stderr] Downloaded instant v0.1.8 [INFO] [stderr] Downloaded wayland-cursor v0.28.2 [INFO] [stderr] Downloaded owned_ttf_parser v0.6.0 [INFO] [stderr] Downloaded pin-project-internal v1.0.1 [INFO] [stderr] Downloaded xcursor v0.3.2 [INFO] [stderr] Downloaded cgmath v0.17.0 [INFO] [stderr] Downloaded pin-project v1.0.1 [INFO] [stderr] Downloaded ttf-parser v0.6.2 [INFO] [stderr] Downloaded wayland-protocols v0.28.2 [INFO] [stderr] Downloaded smithay-client-toolkit v0.12.0 [INFO] [stderr] Downloaded cc v1.0.62 [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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-04-21" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] e87e2e2e72dc44e909e806acdcfb113bf9e5d6b6972ec5efe767a4fa108cef1e [INFO] running `Command { std: "docker" "start" "-a" "e87e2e2e72dc44e909e806acdcfb113bf9e5d6b6972ec5efe767a4fa108cef1e", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "e87e2e2e72dc44e909e806acdcfb113bf9e5d6b6972ec5efe767a4fa108cef1e", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "e87e2e2e72dc44e909e806acdcfb113bf9e5d6b6972ec5efe767a4fa108cef1e", kill_on_drop: false }` [INFO] [stdout] e87e2e2e72dc44e909e806acdcfb113bf9e5d6b6972ec5efe767a4fa108cef1e [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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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" "+beta-2026-04-21" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] de20db9f0f643eabd3bc116398082f0c05dcd1cb06eece3f71944047ed38898d [INFO] running `Command { std: "docker" "start" "-a" "de20db9f0f643eabd3bc116398082f0c05dcd1cb06eece3f71944047ed38898d", kill_on_drop: false }` [INFO] [stderr] Compiling libc v0.2.80 [INFO] [stderr] Compiling proc-macro2 v1.0.24 [INFO] [stderr] Compiling unicode-xid v0.2.1 [INFO] [stderr] Compiling pkg-config v0.3.19 [INFO] [stderr] Compiling log v0.4.11 [INFO] [stderr] Compiling syn v1.0.48 [INFO] [stderr] Checking once_cell v1.5.2 [INFO] [stderr] Compiling memchr v2.3.4 [INFO] [stderr] Checking smallvec v1.5.0 [INFO] [stderr] Compiling byteorder v1.3.4 [INFO] [stderr] Compiling xml-rs v0.8.3 [INFO] [stderr] Checking libloading v0.6.5 [INFO] [stderr] Checking rand_core v0.4.2 [INFO] [stderr] Compiling autocfg v0.1.7 [INFO] [stderr] Compiling nix v0.18.0 [INFO] [stderr] Checking slab v0.4.2 [INFO] [stderr] Compiling version_check v0.9.2 [INFO] [stderr] Checking dlib v0.4.2 [INFO] [stderr] Compiling proc-macro-hack v0.5.19 [INFO] [stderr] Checking rand_core v0.3.1 [INFO] [stderr] Compiling proc-macro-nested v0.1.6 [INFO] [stderr] Checking instant v0.1.8 [INFO] [stderr] Checking scoped-tls v1.0.0 [INFO] [stderr] Checking futures-sink v0.3.8 [INFO] [stderr] Checking ttf-parser v0.6.2 [INFO] [stderr] Checking futures-core v0.3.8 [INFO] [stderr] Checking downcast-rs v1.2.0 [INFO] [stderr] Checking lock_api v0.4.2 [INFO] [stderr] Checking futures-task v0.3.8 [INFO] [stderr] Checking ab_glyph_rasterizer v0.1.4 [INFO] [stderr] Compiling nom v5.1.2 [INFO] [stderr] Checking futures-channel v0.3.8 [INFO] [stderr] Compiling rand_chacha v0.1.1 [INFO] [stderr] Compiling rand_pcg v0.1.2 [INFO] [stderr] Checking futures-io v0.3.8 [INFO] [stderr] Compiling maybe-uninit v2.0.0 [INFO] [stderr] Checking bit-vec v0.6.2 [INFO] [stderr] Checking arrayvec v0.5.2 [INFO] [stderr] Checking fxhash v0.2.1 [INFO] [stderr] Compiling rand v0.6.5 [INFO] [stderr] Compiling wayland-sys v0.28.2 [INFO] [stderr] Compiling x11 v2.18.2 [INFO] [stderr] Compiling x11-dl v2.18.5 [INFO] [stderr] Checking bit-set v0.5.2 [INFO] [stderr] Compiling quote v1.0.7 [INFO] [stderr] Checking walkdir v2.3.1 [INFO] [stderr] Checking spirv_headers v1.5.0 [INFO] [stderr] Checking ash v0.31.0 [INFO] [stderr] Checking tracing-core v0.1.17 [INFO] [stderr] Checking xdg v2.2.0 [INFO] [stderr] Checking inplace_it v0.3.2 [INFO] [stderr] Checking pin-project-lite v0.1.11 [INFO] [stderr] Compiling wayland-scanner v0.28.2 [INFO] [stderr] Checking rand_isaac v0.1.1 [INFO] [stderr] Checking rand_xorshift v0.1.1 [INFO] [stderr] Checking rand_hc v0.1.0 [INFO] [stderr] Checking tracing v0.1.21 [INFO] [stderr] Checking owned_ttf_parser v0.6.0 [INFO] [stderr] Checking raw-window-handle v0.3.3 [INFO] [stderr] Checking parking_lot_core v0.8.0 [INFO] [stderr] Checking net2 v0.2.35 [INFO] [stderr] Checking rusttype v0.9.2 [INFO] [stderr] Compiling jobserver v0.1.21 [INFO] [stderr] Checking iovec v0.1.4 [INFO] [stderr] Checking gfx-hal v0.6.0 [INFO] [stderr] Checking memmap v0.7.0 [INFO] [stderr] Checking rand_os v0.1.3 [INFO] [stderr] Checking andrew v0.3.1 [INFO] [stderr] Checking rand_jitter v0.1.4 [INFO] [stderr] Checking parking_lot v0.11.1 [INFO] [stderr] Checking mio v0.6.22 [INFO] [stderr] Checking wgpu-types v0.6.1 [INFO] [stderr] Compiling memoffset v0.5.6 [INFO] [stderr] Checking lazycell v1.3.0 [INFO] [stderr] Compiling cc v1.0.62 [INFO] [stderr] Checking copyless v0.1.5 [INFO] [stderr] Compiling winit v0.23.0 [INFO] [stderr] Compiling cgmath v0.17.0 [INFO] [stderr] Checking approx v0.3.2 [INFO] [stderr] Checking either v1.6.1 [INFO] [stderr] Checking typed-arena v2.0.1 [INFO] [stderr] Checking percent-encoding v2.1.0 [INFO] [stderr] Checking itertools v0.9.0 [INFO] [stderr] Checking bytemuck v1.4.1 [INFO] [stderr] Compiling wayland-client v0.28.2 [INFO] [stderr] Compiling wayland-protocols v0.28.2 [INFO] [stderr] Compiling cmake v0.1.45 [INFO] [stderr] Checking mio-extras v2.0.6 [INFO] [stderr] Checking xcursor v0.3.2 [INFO] [stderr] Compiling shaderc-sys v0.6.3 [INFO] [stderr] warning: shaderc-sys@0.6.3: Checking for system installed libraries. Use --features = build-from-source to disable this behavior [INFO] [stderr] warning: shaderc-sys@0.6.3: System installed library not found. Falling back to build from source [INFO] [stderr] error: failed to run custom build command for `shaderc-sys v0.6.3` [INFO] [stderr] note: To improve backtraces for build dependencies, set the CARGO_PROFILE_DEV_BUILD_OVERRIDE_DEBUG=true environment variable to enable debug information generation. [INFO] [stderr] [INFO] [stderr] Caused by: [INFO] [stderr] process didn't exit successfully: `/opt/rustwide/target/debug/build/shaderc-sys-b699990cbade2929/build-script-build` (exit status: 101) [INFO] [stderr] --- stdout [INFO] [stderr] cargo:warning=Checking for system installed libraries. Use --features = build-from-source to disable this behavior [INFO] [stderr] cargo:warning=System installed library not found. Falling back to build from source [INFO] [stderr] [INFO] [stderr] --- stderr [INFO] [stderr] [INFO] [stderr] thread 'main' (1405) panicked at /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/shaderc-sys-0.6.3/build/cmd_finder.rs:50:13: [INFO] [stderr] [INFO] [stderr] [INFO] [stderr] couldn't find required command: "python" [INFO] [stderr] [INFO] [stderr] [INFO] [stderr] stack backtrace: [INFO] [stderr] 0: 0x6310843d97ba - std[128c3efe2914e152]::backtrace_rs::backtrace::libunwind::trace [INFO] [stderr] at /rustc/8489f1adbe1c8f8921cf18b9962cf565237a5489/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9 [INFO] [stderr] 1: 0x6310843d97ba - std[128c3efe2914e152]::backtrace_rs::backtrace::trace_unsynchronized:: [INFO] [stderr] at /rustc/8489f1adbe1c8f8921cf18b9962cf565237a5489/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14 [INFO] [stderr] 2: 0x6310843d97ba - std[128c3efe2914e152]::sys::backtrace::_print_fmt [INFO] [stderr] at /rustc/8489f1adbe1c8f8921cf18b9962cf565237a5489/library/std/src/sys/backtrace.rs:74:9 [INFO] [stderr] 3: 0x6310843d97ba - <::print::DisplayBacktrace as core[6771d259883166e6]::fmt::Display>::fmt [INFO] [stderr] at /rustc/8489f1adbe1c8f8921cf18b9962cf565237a5489/library/std/src/sys/backtrace.rs:44:26 [INFO] [stderr] 4: 0x6310843edaea - ::fmt [INFO] [stderr] at /rustc/8489f1adbe1c8f8921cf18b9962cf565237a5489/library/core/src/fmt/rt.rs:152:76 [INFO] [stderr] 5: 0x6310843edaea - core[6771d259883166e6]::fmt::write [INFO] [stderr] 6: 0x6310843df8c2 - std[128c3efe2914e152]::io::default_write_fmt:: [INFO] [stderr] at /rustc/8489f1adbe1c8f8921cf18b9962cf565237a5489/library/std/src/io/mod.rs:621:11 [INFO] [stderr] 7: 0x6310843df8c2 - ::write_fmt [INFO] [stderr] at /rustc/8489f1adbe1c8f8921cf18b9962cf565237a5489/library/std/src/io/mod.rs:1976:13 [INFO] [stderr] 8: 0x6310843ba85f - ::print [INFO] [stderr] at /rustc/8489f1adbe1c8f8921cf18b9962cf565237a5489/library/std/src/sys/backtrace.rs:47:9 [INFO] [stderr] 9: 0x6310843ba85f - std[128c3efe2914e152]::panicking::default_hook::{closure#0} [INFO] [stderr] at /rustc/8489f1adbe1c8f8921cf18b9962cf565237a5489/library/std/src/panicking.rs:292:27 [INFO] [stderr] 10: 0x6310843d3eb1 - std[128c3efe2914e152]::panicking::default_hook [INFO] [stderr] at /rustc/8489f1adbe1c8f8921cf18b9962cf565237a5489/library/std/src/panicking.rs:319:9 [INFO] [stderr] 11: 0x6310843d406b - std[128c3efe2914e152]::panicking::panic_with_hook [INFO] [stderr] at /rustc/8489f1adbe1c8f8921cf18b9962cf565237a5489/library/std/src/panicking.rs:825:13 [INFO] [stderr] 12: 0x6310843ba918 - std[128c3efe2914e152]::panicking::panic_handler::{closure#0} [INFO] [stderr] at /rustc/8489f1adbe1c8f8921cf18b9962cf565237a5489/library/std/src/panicking.rs:698:13 [INFO] [stderr] 13: 0x6310843afa19 - std[128c3efe2914e152]::sys::backtrace::__rust_end_short_backtrace:: [INFO] [stderr] at /rustc/8489f1adbe1c8f8921cf18b9962cf565237a5489/library/std/src/sys/backtrace.rs:182:18 [INFO] [stderr] 14: 0x6310843bb27d - __rustc[752cc74e29381ccc]::rust_begin_unwind [INFO] [stderr] at /rustc/8489f1adbe1c8f8921cf18b9962cf565237a5489/library/std/src/panicking.rs:689:5 [INFO] [stderr] 15: 0x6310843ee21c - core[6771d259883166e6]::panicking::panic_fmt [INFO] [stderr] at /rustc/8489f1adbe1c8f8921cf18b9962cf565237a5489/library/core/src/panicking.rs:80:14 [INFO] [stderr] 16: 0x631084354776 - build_script_build::cmd_finder::CommandFinder::must_have::{{closure}}::h05e40cf75b05f154 [INFO] [stderr] 17: 0x63108435a0b9 - core::option::Option::unwrap_or_else::h14775bb4a097bef9 [INFO] [stderr] 18: 0x6310843546fc - build_script_build::cmd_finder::CommandFinder::must_have::h8e60e9386a0bc1b8 [INFO] [stderr] 19: 0x631084357f2a - build_script_build::main::h8b840e830250499a [INFO] [stderr] 20: 0x631084359653 - core::ops::function::FnOnce::call_once::hfe57b45afe733abf [INFO] [stderr] 21: 0x631084359046 - std::sys::backtrace::__rust_begin_short_backtrace::h601329b3349746ad [INFO] [stderr] 22: 0x631084358fc9 - std::rt::lang_start::{{closure}}::h2878c8cb323689aa [INFO] [stderr] 23: 0x6310843d2fa4 - <&dyn core[6771d259883166e6]::ops::function::Fn<(), Output = i32> + core[6771d259883166e6]::marker::Sync + core[6771d259883166e6]::panic::unwind_safe::RefUnwindSafe as core[6771d259883166e6]::ops::function::FnOnce<()>>::call_once [INFO] [stderr] at /rustc/8489f1adbe1c8f8921cf18b9962cf565237a5489/library/core/src/ops/function.rs:287:21 [INFO] [stderr] 24: 0x6310843d2fa4 - std[128c3efe2914e152]::panicking::catch_unwind::do_call::<&dyn core[6771d259883166e6]::ops::function::Fn<(), Output = i32> + core[6771d259883166e6]::marker::Sync + core[6771d259883166e6]::panic::unwind_safe::RefUnwindSafe, i32> [INFO] [stderr] at /rustc/8489f1adbe1c8f8921cf18b9962cf565237a5489/library/std/src/panicking.rs:581:40 [INFO] [stderr] 25: 0x6310843d2fa4 - std[128c3efe2914e152]::panicking::catch_unwind:: + core[6771d259883166e6]::marker::Sync + core[6771d259883166e6]::panic::unwind_safe::RefUnwindSafe> [INFO] [stderr] at /rustc/8489f1adbe1c8f8921cf18b9962cf565237a5489/library/std/src/panicking.rs:544:19 [INFO] [stderr] 26: 0x6310843d2fa4 - std[128c3efe2914e152]::panic::catch_unwind::<&dyn core[6771d259883166e6]::ops::function::Fn<(), Output = i32> + core[6771d259883166e6]::marker::Sync + core[6771d259883166e6]::panic::unwind_safe::RefUnwindSafe, i32> [INFO] [stderr] at /rustc/8489f1adbe1c8f8921cf18b9962cf565237a5489/library/std/src/panic.rs:359:14 [INFO] [stderr] 27: 0x6310843d2fa4 - std[128c3efe2914e152]::rt::lang_start_internal::{closure#0} [INFO] [stderr] at /rustc/8489f1adbe1c8f8921cf18b9962cf565237a5489/library/std/src/rt.rs:175:24 [INFO] [stderr] 28: 0x6310843d2fa4 - std[128c3efe2914e152]::panicking::catch_unwind::do_call:: [INFO] [stderr] at /rustc/8489f1adbe1c8f8921cf18b9962cf565237a5489/library/std/src/panicking.rs:581:40 [INFO] [stderr] 29: 0x6310843d2fa4 - std[128c3efe2914e152]::panicking::catch_unwind:: [INFO] [stderr] at /rustc/8489f1adbe1c8f8921cf18b9962cf565237a5489/library/std/src/panicking.rs:544:19 [INFO] [stderr] 30: 0x6310843d2fa4 - std[128c3efe2914e152]::panic::catch_unwind:: [INFO] [stderr] at /rustc/8489f1adbe1c8f8921cf18b9962cf565237a5489/library/std/src/panic.rs:359:14 [INFO] [stderr] 31: 0x6310843d2fa4 - std[128c3efe2914e152]::rt::lang_start_internal [INFO] [stderr] at /rustc/8489f1adbe1c8f8921cf18b9962cf565237a5489/library/std/src/rt.rs:171:5 [INFO] [stderr] 32: 0x631084358fb1 - std::rt::lang_start::he87e4aca93e6ed26 [INFO] [stderr] 33: 0x63108435bb95 - main [INFO] [stderr] 34: 0x7f3033cc51ca - [INFO] [stderr] 35: 0x7f3033cc528b - __libc_start_main [INFO] [stderr] 36: 0x631084353855 - _start [INFO] [stderr] 37: 0x0 - [INFO] [stderr] warning: build failed, waiting for other jobs to finish... [INFO] running `Command { std: "docker" "inspect" "de20db9f0f643eabd3bc116398082f0c05dcd1cb06eece3f71944047ed38898d", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "de20db9f0f643eabd3bc116398082f0c05dcd1cb06eece3f71944047ed38898d", kill_on_drop: false }` [INFO] [stdout] de20db9f0f643eabd3bc116398082f0c05dcd1cb06eece3f71944047ed38898d