[INFO] cloning repository https://github.com/hpatjens/issue-example [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/hpatjens/issue-example" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhpatjens%2Fissue-example", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhpatjens%2Fissue-example'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 345b228e965e379afb2247586a07ff1e72ef9660 [INFO] testing hpatjens/issue-example against beta-2026-04-21 for beta-1.96-2 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhpatjens%2Fissue-example" "/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/hpatjens/issue-example [INFO] finished tweaking git repo https://github.com/hpatjens/issue-example [INFO] tweaked toml for git repo https://github.com/hpatjens/issue-example written to /workspace/builds/worker-2-tc2/source/Cargo.toml [INFO] validating manifest of git repo https://github.com/hpatjens/issue-example 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/hpatjens/issue-example 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] 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] 15fd376668202b13c4ef32dce9c56e8579e4c529f948892a651612ae08366e99 [INFO] running `Command { std: "docker" "start" "-a" "15fd376668202b13c4ef32dce9c56e8579e4c529f948892a651612ae08366e99", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "15fd376668202b13c4ef32dce9c56e8579e4c529f948892a651612ae08366e99", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "15fd376668202b13c4ef32dce9c56e8579e4c529f948892a651612ae08366e99", kill_on_drop: false }` [INFO] [stdout] 15fd376668202b13c4ef32dce9c56e8579e4c529f948892a651612ae08366e99 [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" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 3031ea9fe560970d6e4df250346e05c6b0601b29958c93bae4812c29891ded80 [INFO] running `Command { std: "docker" "start" "-a" "3031ea9fe560970d6e4df250346e05c6b0601b29958c93bae4812c29891ded80", kill_on_drop: false }` [INFO] [stderr] Compiling libc v0.2.66 [INFO] [stderr] Compiling cfg-if v0.1.10 [INFO] [stderr] Compiling autocfg v1.0.0 [INFO] [stderr] Compiling cc v1.0.50 [INFO] [stderr] Compiling lazy_static v1.4.0 [INFO] [stderr] Compiling proc-macro2 v0.4.30 [INFO] [stderr] Compiling autocfg v0.1.7 [INFO] [stderr] Compiling unicode-xid v0.1.0 [INFO] [stderr] Compiling xml-rs v0.8.0 [INFO] [stderr] Compiling bitflags v1.2.1 [INFO] [stderr] Compiling log v0.4.8 [INFO] [stderr] Compiling semver-parser v0.7.0 [INFO] [stderr] Compiling byteorder v1.3.4 [INFO] [stderr] Compiling nix v0.14.1 [INFO] [stderr] Compiling scopeguard v1.0.0 [INFO] [stderr] Compiling slab v0.4.2 [INFO] [stderr] Compiling void v1.0.2 [INFO] [stderr] Compiling getrandom v0.1.14 [INFO] [stderr] Compiling semver v0.9.0 [INFO] [stderr] Compiling maybe-uninit v2.0.0 [INFO] [stderr] Compiling lazycell v1.2.1 [INFO] [stderr] Compiling ppv-lite86 v0.2.6 [INFO] [stderr] Compiling arrayvec v0.5.1 [INFO] [stderr] Compiling downcast-rs v1.1.1 [INFO] [stderr] Compiling typenum v1.11.2 [INFO] [stderr] Compiling libm v0.1.4 [INFO] [stderr] Compiling same-file v1.0.6 [INFO] [stderr] Compiling pkg-config v0.3.17 [INFO] [stderr] Compiling num-traits v0.2.11 [INFO] [stderr] Compiling crossbeam-utils v0.7.0 [INFO] [stderr] Compiling crossbeam-epoch v0.8.0 [INFO] [stderr] Compiling rustc_version v0.2.3 [INFO] [stderr] Compiling num-complex v0.2.4 [INFO] [stderr] Compiling num-integer v0.1.42 [INFO] [stderr] Compiling proc-macro2 v1.0.8 [INFO] [stderr] Compiling walkdir v2.3.1 [INFO] [stderr] Compiling num-rational v0.2.3 [INFO] [stderr] Compiling quote v0.6.13 [INFO] [stderr] Compiling stb_truetype v0.3.1 [INFO] [stderr] Compiling c2-chacha v0.2.3 [INFO] [stderr] Compiling x11-dl v2.18.5 [INFO] [stderr] Compiling unicode-xid v0.2.0 [INFO] [stderr] Compiling smallvec v1.2.0 [INFO] [stderr] Compiling memoffset v0.5.3 [INFO] [stderr] Compiling xdg v2.2.0 [INFO] [stderr] Compiling wayland-scanner v0.23.6 [INFO] [stderr] Compiling net2 v0.2.33 [INFO] [stderr] Compiling iovec v0.1.4 [INFO] [stderr] Compiling cmake v0.1.42 [INFO] [stderr] Compiling memmap v0.7.0 [INFO] [stderr] Compiling parking_lot_core v0.7.0 [INFO] [stderr] Compiling rand_core v0.5.1 [INFO] [stderr] Compiling mio v0.6.21 [INFO] [stderr] Compiling crossbeam-queue v0.2.1 [INFO] [stderr] Compiling crossbeam-channel v0.4.0 [INFO] [stderr] Compiling libloading v0.5.2 [INFO] [stderr] Compiling rand_chacha v0.2.1 [INFO] [stderr] Compiling lock_api v0.3.3 [INFO] [stderr] Compiling shaderc-sys v0.6.1 [INFO] [stderr] Compiling vulkano v0.17.0 [INFO] [stderr] Compiling rawpointer v0.2.1 [INFO] [stderr] Compiling syn v1.0.14 [INFO] [stderr] Compiling generic-array v0.13.2 [INFO] [stderr] Compiling matrixmultiply v0.2.3 [INFO] [stderr] Compiling rand v0.7.3 [INFO] [stderr] Compiling parking_lot v0.10.0 [INFO] [stderr] Compiling quote v1.0.2 [INFO] [stderr] Compiling crossbeam-deque v0.7.2 [INFO] [stderr] Compiling approx v0.3.2 [INFO] [stderr] Compiling ordered-float v1.0.2 [INFO] [stderr] Compiling line_drawing v0.7.0 [INFO] [stderr] warning: shaderc-sys@0.6.1: Checking for system installed libraries. Use --features = build-from-source to disable this behavior [INFO] [stderr] warning: shaderc-sys@0.6.1: System installed library not found. Falling back to build from source [INFO] [stderr] error: failed to run custom build command for `shaderc-sys v0.6.1` [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-8b221e4156dfc125/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' (1344) panicked at /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/shaderc-sys-0.6.1/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: 0x5bfe65dcdc9a - 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: 0x5bfe65dcdc9a - 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: 0x5bfe65dcdc9a - std[128c3efe2914e152]::sys::backtrace::_print_fmt [INFO] [stderr] at /rustc/8489f1adbe1c8f8921cf18b9962cf565237a5489/library/std/src/sys/backtrace.rs:74:9 [INFO] [stderr] 3: 0x5bfe65dcdc9a - <::print::DisplayBacktrace as core[6771d259883166e6]::fmt::Display>::fmt [INFO] [stderr] at /rustc/8489f1adbe1c8f8921cf18b9962cf565237a5489/library/std/src/sys/backtrace.rs:44:26 [INFO] [stderr] 4: 0x5bfe65de1aea - ::fmt [INFO] [stderr] at /rustc/8489f1adbe1c8f8921cf18b9962cf565237a5489/library/core/src/fmt/rt.rs:152:76 [INFO] [stderr] 5: 0x5bfe65de1aea - core[6771d259883166e6]::fmt::write [INFO] [stderr] 6: 0x5bfe65dd3af2 - std[128c3efe2914e152]::io::default_write_fmt:: [INFO] [stderr] at /rustc/8489f1adbe1c8f8921cf18b9962cf565237a5489/library/std/src/io/mod.rs:621:11 [INFO] [stderr] 7: 0x5bfe65dd3af2 - ::write_fmt [INFO] [stderr] at /rustc/8489f1adbe1c8f8921cf18b9962cf565237a5489/library/std/src/io/mod.rs:1976:13 [INFO] [stderr] 8: 0x5bfe65dafc7f - ::print [INFO] [stderr] at /rustc/8489f1adbe1c8f8921cf18b9962cf565237a5489/library/std/src/sys/backtrace.rs:47:9 [INFO] [stderr] 9: 0x5bfe65dafc7f - std[128c3efe2914e152]::panicking::default_hook::{closure#0} [INFO] [stderr] at /rustc/8489f1adbe1c8f8921cf18b9962cf565237a5489/library/std/src/panicking.rs:292:27 [INFO] [stderr] 10: 0x5bfe65dc8ab1 - std[128c3efe2914e152]::panicking::default_hook [INFO] [stderr] at /rustc/8489f1adbe1c8f8921cf18b9962cf565237a5489/library/std/src/panicking.rs:319:9 [INFO] [stderr] 11: 0x5bfe65dc8c6b - std[128c3efe2914e152]::panicking::panic_with_hook [INFO] [stderr] at /rustc/8489f1adbe1c8f8921cf18b9962cf565237a5489/library/std/src/panicking.rs:825:13 [INFO] [stderr] 12: 0x5bfe65dafd38 - std[128c3efe2914e152]::panicking::panic_handler::{closure#0} [INFO] [stderr] at /rustc/8489f1adbe1c8f8921cf18b9962cf565237a5489/library/std/src/panicking.rs:698:13 [INFO] [stderr] 13: 0x5bfe65da4e99 - std[128c3efe2914e152]::sys::backtrace::__rust_end_short_backtrace:: [INFO] [stderr] at /rustc/8489f1adbe1c8f8921cf18b9962cf565237a5489/library/std/src/sys/backtrace.rs:182:18 [INFO] [stderr] 14: 0x5bfe65db069d - __rustc[752cc74e29381ccc]::rust_begin_unwind [INFO] [stderr] at /rustc/8489f1adbe1c8f8921cf18b9962cf565237a5489/library/std/src/panicking.rs:689:5 [INFO] [stderr] 15: 0x5bfe65de21dc - core[6771d259883166e6]::panicking::panic_fmt [INFO] [stderr] at /rustc/8489f1adbe1c8f8921cf18b9962cf565237a5489/library/core/src/panicking.rs:80:14 [INFO] [stderr] 16: 0x5bfe65d57256 - build_script_build::cmd_finder::CommandFinder::must_have::{{closure}}::h9057453d209de86d [INFO] [stderr] 17: 0x5bfe65d5b919 - core::option::Option::unwrap_or_else::h69ee9fb339937989 [INFO] [stderr] 18: 0x5bfe65d571dc - build_script_build::cmd_finder::CommandFinder::must_have::h0145cae868a087c0 [INFO] [stderr] 19: 0x5bfe65d5a003 - build_script_build::main::hbe56a9e8e5f54871 [INFO] [stderr] 20: 0x5bfe65d5afc3 - core::ops::function::FnOnce::call_once::hf087ba526e9f421d [INFO] [stderr] 21: 0x5bfe65d5aad6 - std::sys::backtrace::__rust_begin_short_backtrace::h55a5ee56d22ffc9e [INFO] [stderr] 22: 0x5bfe65d5aa49 - std::rt::lang_start::{{closure}}::haead718096c2bb09 [INFO] [stderr] 23: 0x5bfe65dc7ba4 - <&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: 0x5bfe65dc7ba4 - 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: 0x5bfe65dc7ba4 - 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: 0x5bfe65dc7ba4 - 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: 0x5bfe65dc7ba4 - std[128c3efe2914e152]::rt::lang_start_internal::{closure#0} [INFO] [stderr] at /rustc/8489f1adbe1c8f8921cf18b9962cf565237a5489/library/std/src/rt.rs:175:24 [INFO] [stderr] 28: 0x5bfe65dc7ba4 - std[128c3efe2914e152]::panicking::catch_unwind::do_call:: [INFO] [stderr] at /rustc/8489f1adbe1c8f8921cf18b9962cf565237a5489/library/std/src/panicking.rs:581:40 [INFO] [stderr] 29: 0x5bfe65dc7ba4 - std[128c3efe2914e152]::panicking::catch_unwind:: [INFO] [stderr] at /rustc/8489f1adbe1c8f8921cf18b9962cf565237a5489/library/std/src/panicking.rs:544:19 [INFO] [stderr] 30: 0x5bfe65dc7ba4 - std[128c3efe2914e152]::panic::catch_unwind:: [INFO] [stderr] at /rustc/8489f1adbe1c8f8921cf18b9962cf565237a5489/library/std/src/panic.rs:359:14 [INFO] [stderr] 31: 0x5bfe65dc7ba4 - std[128c3efe2914e152]::rt::lang_start_internal [INFO] [stderr] at /rustc/8489f1adbe1c8f8921cf18b9962cf565237a5489/library/std/src/rt.rs:171:5 [INFO] [stderr] 32: 0x5bfe65d5aa31 - std::rt::lang_start::h5336a7453b19ac30 [INFO] [stderr] 33: 0x5bfe65d5cf65 - main [INFO] [stderr] 34: 0x7699e06e71ca - [INFO] [stderr] 35: 0x7699e06e728b - __libc_start_main [INFO] [stderr] 36: 0x5bfe65d56335 - _start [INFO] [stderr] 37: 0x0 - [INFO] [stderr] warning: build failed, waiting for other jobs to finish... [INFO] running `Command { std: "docker" "inspect" "3031ea9fe560970d6e4df250346e05c6b0601b29958c93bae4812c29891ded80", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "3031ea9fe560970d6e4df250346e05c6b0601b29958c93bae4812c29891ded80", kill_on_drop: false }` [INFO] [stdout] 3031ea9fe560970d6e4df250346e05c6b0601b29958c93bae4812c29891ded80