[INFO] cloning repository https://github.com/brsnb/xcb_test_wm [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/brsnb/xcb_test_wm" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbrsnb%2Fxcb_test_wm", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbrsnb%2Fxcb_test_wm'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] fed0ac52d720e539bb80ce66c4ae8b4e32134451 [INFO] testing brsnb/xcb_test_wm against beta-2026-04-21 for beta-1.96-1 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbrsnb%2Fxcb_test_wm" "/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/brsnb/xcb_test_wm [INFO] finished tweaking git repo https://github.com/brsnb/xcb_test_wm [INFO] tweaked toml for git repo https://github.com/brsnb/xcb_test_wm written to /workspace/builds/worker-2-tc2/source/Cargo.toml [INFO] validating manifest of git repo https://github.com/brsnb/xcb_test_wm 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/brsnb/xcb_test_wm 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] Updating crates.io index [INFO] [stderr] Blocking waiting for file lock on package cache [ERROR] error running command: no output for 300 seconds [INFO] testing brsnb/xcb_test_wm against beta-2026-04-21 for beta-1.96-1 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbrsnb%2Fxcb_test_wm" "/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/brsnb/xcb_test_wm [INFO] finished tweaking git repo https://github.com/brsnb/xcb_test_wm [INFO] tweaked toml for git repo https://github.com/brsnb/xcb_test_wm written to /workspace/builds/worker-2-tc2/source/Cargo.toml [INFO] validating manifest of git repo https://github.com/brsnb/xcb_test_wm 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/brsnb/xcb_test_wm 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 x11 v2.18.1 [INFO] [stderr] Downloaded xcb v0.8.2 [INFO] [stderr] Downloaded libc v0.2.55 [INFO] [stderr] Downloaded xcb-util v0.2.0 [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] 5c588dc87b5730fc061108627f5c9dfd0c3693799cd623ce62bc1b238669e854 [INFO] running `Command { std: "docker" "start" "-a" "5c588dc87b5730fc061108627f5c9dfd0c3693799cd623ce62bc1b238669e854", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "5c588dc87b5730fc061108627f5c9dfd0c3693799cd623ce62bc1b238669e854", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "5c588dc87b5730fc061108627f5c9dfd0c3693799cd623ce62bc1b238669e854", kill_on_drop: false }` [INFO] [stdout] 5c588dc87b5730fc061108627f5c9dfd0c3693799cd623ce62bc1b238669e854 [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] 6fef9ac6c38f415075965f6fa881adc079972eebde9f72ad8e9e061572d4b694 [INFO] running `Command { std: "docker" "start" "-a" "6fef9ac6c38f415075965f6fa881adc079972eebde9f72ad8e9e061572d4b694", kill_on_drop: false }` [INFO] [stderr] Compiling libc v0.2.55 [INFO] [stderr] Compiling log v0.4.6 [INFO] [stderr] Compiling x11 v2.18.1 [INFO] [stderr] Compiling xcb v0.8.2 [INFO] [stderr] error: failed to run custom build command for `xcb v0.8.2` [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/xcb-d780ad78e39b2116/build-script-build` (exit status: 101) [INFO] [stderr] --- stderr [INFO] [stderr] error occured in handler: ('request: ', ('xcb', 'DPMS', 'Info')) [INFO] [stderr] Traceback (most recent call last): [INFO] [stderr] File "/opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/xcb-0.8.2/rs_client.py", line 2448, in [INFO] [stderr] module.generate() [INFO] [stderr] File "/opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/xcb-0.8.2/xcbgen/state.py", line 108, in generate [INFO] [stderr] self.close() [INFO] [stderr] File "/opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/xcb-0.8.2/rs_client.py", line 296, in rs_close [INFO] [stderr] _f.writeout(os.path.join(module.rs_srcdir, "ffi", "%s.rs" % _module_name(_ns.ext_name))) [INFO] [stderr] File "/opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/xcb-0.8.2/rs_client.py", line 114, in writeout [INFO] [stderr] with open(path, 'w') as f: [INFO] [stderr] ^^^^^^^^^^^^^^^ [INFO] [stderr] OSError: [Errno 30] Read-only file system: '/opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/xcb-0.8.2/src/ffi/dpms.rs' [INFO] [stderr] [INFO] [stderr] thread 'main' (125) panicked at /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/xcb-0.8.2/build.rs:75:17: [INFO] [stderr] processing of /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/xcb-0.8.2/xml/dpms.xml returned non-zero (1) [INFO] [stderr] stack backtrace: [INFO] [stderr] 0: 0x57038fe5bd3a - 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: 0x57038fe5bd3a - 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: 0x57038fe5bd3a - std[128c3efe2914e152]::sys::backtrace::_print_fmt [INFO] [stderr] at /rustc/8489f1adbe1c8f8921cf18b9962cf565237a5489/library/std/src/sys/backtrace.rs:74:9 [INFO] [stderr] 3: 0x57038fe5bd3a - <::print::DisplayBacktrace as core[6771d259883166e6]::fmt::Display>::fmt [INFO] [stderr] at /rustc/8489f1adbe1c8f8921cf18b9962cf565237a5489/library/std/src/sys/backtrace.rs:44:26 [INFO] [stderr] 4: 0x57038fe6ce2a - ::fmt [INFO] [stderr] at /rustc/8489f1adbe1c8f8921cf18b9962cf565237a5489/library/core/src/fmt/rt.rs:152:76 [INFO] [stderr] 5: 0x57038fe6ce2a - core[6771d259883166e6]::fmt::write [INFO] [stderr] 6: 0x57038fe60052 - std[128c3efe2914e152]::io::default_write_fmt:: [INFO] [stderr] at /rustc/8489f1adbe1c8f8921cf18b9962cf565237a5489/library/std/src/io/mod.rs:621:11 [INFO] [stderr] 7: 0x57038fe60052 - ::write_fmt [INFO] [stderr] at /rustc/8489f1adbe1c8f8921cf18b9962cf565237a5489/library/std/src/io/mod.rs:1976:13 [INFO] [stderr] 8: 0x57038fe406ef - ::print [INFO] [stderr] at /rustc/8489f1adbe1c8f8921cf18b9962cf565237a5489/library/std/src/sys/backtrace.rs:47:9 [INFO] [stderr] 9: 0x57038fe406ef - std[128c3efe2914e152]::panicking::default_hook::{closure#0} [INFO] [stderr] at /rustc/8489f1adbe1c8f8921cf18b9962cf565237a5489/library/std/src/panicking.rs:292:27 [INFO] [stderr] 10: 0x57038fe57a61 - std[128c3efe2914e152]::panicking::default_hook [INFO] [stderr] at /rustc/8489f1adbe1c8f8921cf18b9962cf565237a5489/library/std/src/panicking.rs:319:9 [INFO] [stderr] 11: 0x57038fe57c1b - std[128c3efe2914e152]::panicking::panic_with_hook [INFO] [stderr] at /rustc/8489f1adbe1c8f8921cf18b9962cf565237a5489/library/std/src/panicking.rs:825:13 [INFO] [stderr] 12: 0x57038fe407a8 - std[128c3efe2914e152]::panicking::panic_handler::{closure#0} [INFO] [stderr] at /rustc/8489f1adbe1c8f8921cf18b9962cf565237a5489/library/std/src/panicking.rs:698:13 [INFO] [stderr] 13: 0x57038fe35bd9 - std[128c3efe2914e152]::sys::backtrace::__rust_end_short_backtrace:: [INFO] [stderr] at /rustc/8489f1adbe1c8f8921cf18b9962cf565237a5489/library/std/src/sys/backtrace.rs:182:18 [INFO] [stderr] 14: 0x57038fe4100d - __rustc[752cc74e29381ccc]::rust_begin_unwind [INFO] [stderr] at /rustc/8489f1adbe1c8f8921cf18b9962cf565237a5489/library/std/src/panicking.rs:689:5 [INFO] [stderr] 15: 0x57038fe6d51c - core[6771d259883166e6]::panicking::panic_fmt [INFO] [stderr] at /rustc/8489f1adbe1c8f8921cf18b9962cf565237a5489/library/core/src/panicking.rs:80:14 [INFO] [stderr] 16: 0x57038fe24c9b - build_script_build::main::{{closure}}::hfbdafc8a024dc74a [INFO] [stderr] 17: 0x57038fe251fd - build_script_build::visit_xml::h9c1bad6b2c60c152 [INFO] [stderr] 18: 0x57038fe242aa - build_script_build::main::h30b4e7ba425bea28 [INFO] [stderr] 19: 0x57038fe26a63 - core::ops::function::FnOnce::call_once::h6cc02727898d4a49 [INFO] [stderr] 20: 0x57038fe26266 - std::sys::backtrace::__rust_begin_short_backtrace::h7c1f0b54dcc42882 [INFO] [stderr] 21: 0x57038fe26149 - std::rt::lang_start::{{closure}}::h3f1749c43698fb9e [INFO] [stderr] 22: 0x57038fe56ca4 - <&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] 23: 0x57038fe56ca4 - 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] 24: 0x57038fe56ca4 - 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] 25: 0x57038fe56ca4 - 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] 26: 0x57038fe56ca4 - std[128c3efe2914e152]::rt::lang_start_internal::{closure#0} [INFO] [stderr] at /rustc/8489f1adbe1c8f8921cf18b9962cf565237a5489/library/std/src/rt.rs:175:24 [INFO] [stderr] 27: 0x57038fe56ca4 - std[128c3efe2914e152]::panicking::catch_unwind::do_call:: [INFO] [stderr] at /rustc/8489f1adbe1c8f8921cf18b9962cf565237a5489/library/std/src/panicking.rs:581:40 [INFO] [stderr] 28: 0x57038fe56ca4 - std[128c3efe2914e152]::panicking::catch_unwind:: [INFO] [stderr] at /rustc/8489f1adbe1c8f8921cf18b9962cf565237a5489/library/std/src/panicking.rs:544:19 [INFO] [stderr] 29: 0x57038fe56ca4 - std[128c3efe2914e152]::panic::catch_unwind:: [INFO] [stderr] at /rustc/8489f1adbe1c8f8921cf18b9962cf565237a5489/library/std/src/panic.rs:359:14 [INFO] [stderr] 30: 0x57038fe56ca4 - std[128c3efe2914e152]::rt::lang_start_internal [INFO] [stderr] at /rustc/8489f1adbe1c8f8921cf18b9962cf565237a5489/library/std/src/rt.rs:171:5 [INFO] [stderr] 31: 0x57038fe26131 - std::rt::lang_start::h90866dbf08eb1d5a [INFO] [stderr] 32: 0x57038fe29bb5 - main [INFO] [stderr] 33: 0x79c9088f31ca - [INFO] [stderr] 34: 0x79c9088f328b - __libc_start_main [INFO] [stderr] 35: 0x57038fe23a35 - _start [INFO] [stderr] 36: 0x0 - [INFO] [stderr] warning: build failed, waiting for other jobs to finish... [INFO] running `Command { std: "docker" "inspect" "6fef9ac6c38f415075965f6fa881adc079972eebde9f72ad8e9e061572d4b694", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "6fef9ac6c38f415075965f6fa881adc079972eebde9f72ad8e9e061572d4b694", kill_on_drop: false }` [INFO] [stdout] 6fef9ac6c38f415075965f6fa881adc079972eebde9f72ad8e9e061572d4b694