[INFO] cloning repository https://github.com/bchalios/entropy-test-rs [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/bchalios/entropy-test-rs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbchalios%2Fentropy-test-rs", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbchalios%2Fentropy-test-rs'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 8e9b3b8716ed427e9bf28d3e2c991f9b1d758405 [INFO] testing bchalios/entropy-test-rs 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%2Fbchalios%2Fentropy-test-rs" "/workspace/builds/worker-6-tc2/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc2/source'... [INFO] [stderr] done. [INFO] started tweaking git repo https://github.com/bchalios/entropy-test-rs [INFO] finished tweaking git repo https://github.com/bchalios/entropy-test-rs [INFO] tweaked toml for git repo https://github.com/bchalios/entropy-test-rs written to /workspace/builds/worker-6-tc2/source/Cargo.toml [INFO] validating manifest of git repo https://github.com/bchalios/entropy-test-rs 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/bchalios/entropy-test-rs 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 [INFO] [stderr] Downloading crates ... [INFO] [stderr] Downloaded is-terminal v0.4.1 [INFO] [stderr] Downloaded ctrlc v3.2.3 [INFO] [stderr] Downloaded which v4.3.0 [INFO] [stderr] Downloaded serde_derive v1.0.150 [INFO] [stderr] Downloaded spmc v0.3.0 [INFO] [stderr] Downloaded serde v1.0.150 [INFO] [stderr] Downloaded syn v1.0.105 [INFO] [stderr] Downloaded clap v4.0.29 [INFO] [stderr] Downloaded rustix v0.36.5 [INFO] [stderr] Downloaded nix v0.26.1 [INFO] [stderr] Downloaded libc v0.2.138 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] 6baac64fb020237107a04c7e7b6b32da06b4101ece46b04b19346de3ab51294f [INFO] running `Command { std: "docker" "start" "-a" "6baac64fb020237107a04c7e7b6b32da06b4101ece46b04b19346de3ab51294f", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "6baac64fb020237107a04c7e7b6b32da06b4101ece46b04b19346de3ab51294f", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "6baac64fb020237107a04c7e7b6b32da06b4101ece46b04b19346de3ab51294f", kill_on_drop: false }` [INFO] [stdout] 6baac64fb020237107a04c7e7b6b32da06b4101ece46b04b19346de3ab51294f [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] 48a904a7543a7cf0dc6c5ea8e92d2eb67a4eaef0fefa4cadad3d6d8bcab66cd2 [INFO] running `Command { std: "docker" "start" "-a" "48a904a7543a7cf0dc6c5ea8e92d2eb67a4eaef0fefa4cadad3d6d8bcab66cd2", kill_on_drop: false }` [INFO] [stderr] Compiling proc-macro2 v1.0.47 [INFO] [stderr] Compiling libc v0.2.138 [INFO] [stderr] Compiling unicode-ident v1.0.5 [INFO] [stderr] Compiling quote v1.0.21 [INFO] [stderr] Compiling syn v1.0.105 [INFO] [stderr] Compiling glob v0.3.0 [INFO] [stderr] Compiling memchr v2.5.0 [INFO] [stderr] Compiling io-lifetimes v1.0.3 [INFO] [stderr] Compiling proc-macro-error-attr v1.0.4 [INFO] [stderr] Compiling libloading v0.7.4 [INFO] [stderr] Compiling log v0.4.17 [INFO] [stderr] Compiling proc-macro-error v1.0.4 [INFO] [stderr] Compiling either v1.8.0 [INFO] [stderr] Compiling serde_derive v1.0.150 [INFO] [stderr] Compiling regex-syntax v0.6.28 [INFO] [stderr] Compiling bindgen v0.63.0 [INFO] [stderr] Compiling rustix v0.36.5 [INFO] [stderr] Compiling memoffset v0.7.1 [INFO] [stderr] Compiling lazy_static v1.4.0 [INFO] [stderr] Compiling rustc-hash v1.1.0 [INFO] [stderr] Compiling shlex v1.1.0 [INFO] [stderr] Compiling clang-sys v1.4.0 [INFO] [stderr] Compiling peeking_take_while v0.1.2 [INFO] [stderr] Compiling termcolor v1.1.3 [INFO] [stderr] Compiling serde v1.0.150 [INFO] [stderr] Compiling linux-raw-sys v0.1.3 [INFO] [stderr] Compiling humantime v1.3.0 [INFO] [stderr] Compiling heck v0.4.0 [INFO] [stderr] Compiling os_str_bytes v6.4.1 [INFO] [stderr] Compiling serde_json v1.0.89 [INFO] [stderr] Compiling thiserror v1.0.37 [INFO] [stderr] Compiling once_cell v1.16.0 [INFO] [stderr] Compiling itoa v1.0.4 [INFO] [stderr] Compiling ryu v1.0.11 [INFO] [stderr] Compiling which v4.3.0 [INFO] [stderr] Compiling spmc v0.3.0 [INFO] [stderr] Compiling histogram v0.6.9 [INFO] [stderr] Compiling nom v7.1.1 [INFO] [stderr] Compiling clap_lex v0.3.0 [INFO] [stderr] Compiling regex v1.7.0 [INFO] [stderr] Compiling getrandom v0.2.8 [INFO] [stderr] Compiling atty v0.2.14 [INFO] [stderr] Compiling nix v0.25.1 [INFO] [stderr] Compiling nix v0.26.1 [INFO] [stderr] Compiling rand_core v0.6.4 [INFO] [stderr] Compiling rand_chacha v0.3.1 [INFO] [stderr] Compiling rand v0.8.5 [INFO] [stderr] Compiling cexpr v0.6.0 [INFO] [stderr] Compiling ctrlc v3.2.3 [INFO] [stderr] Compiling is-terminal v0.4.1 [INFO] [stderr] Compiling env_logger v0.7.1 [INFO] [stderr] Compiling pretty_env_logger v0.4.0 [INFO] [stderr] Compiling clap_derive v4.0.21 [INFO] [stderr] Compiling thiserror-impl v1.0.37 [INFO] [stderr] Compiling clap v4.0.29 [INFO] [stderr] Compiling entropy-test v0.1.0 (/opt/rustwide/workdir) [INFO] [stderr] error: failed to run custom build command for `entropy-test v0.1.0 (/opt/rustwide/workdir)` [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/entropy-test-75be27a958d9f2b6/build-script-build` (exit status: 101) [INFO] [stderr] --- stdout [INFO] [stderr] cargo:rerun-if-changed=wrapper.h [INFO] [stderr] cargo:rerun-if-changed=/usr/include/linux/random.h [INFO] [stderr] cargo:rerun-if-changed=/usr/include/linux/types.h [INFO] [stderr] cargo:rerun-if-changed=/usr/include/x86_64-linux-gnu/asm/types.h [INFO] [stderr] cargo:rerun-if-changed=/usr/include/asm-generic/types.h [INFO] [stderr] cargo:rerun-if-changed=/usr/include/asm-generic/int-ll64.h [INFO] [stderr] cargo:rerun-if-changed=/usr/include/x86_64-linux-gnu/asm/bitsperlong.h [INFO] [stderr] cargo:rerun-if-changed=/usr/include/asm-generic/bitsperlong.h [INFO] [stderr] cargo:rerun-if-changed=/usr/include/linux/posix_types.h [INFO] [stderr] cargo:rerun-if-changed=/usr/include/linux/stddef.h [INFO] [stderr] cargo:rerun-if-changed=/usr/include/x86_64-linux-gnu/asm/posix_types.h [INFO] [stderr] cargo:rerun-if-changed=/usr/include/x86_64-linux-gnu/asm/posix_types_64.h [INFO] [stderr] cargo:rerun-if-changed=/usr/include/asm-generic/posix_types.h [INFO] [stderr] cargo:rerun-if-changed=/usr/include/x86_64-linux-gnu/asm/bitsperlong.h [INFO] [stderr] cargo:rerun-if-changed=/usr/include/linux/ioctl.h [INFO] [stderr] cargo:rerun-if-changed=/usr/include/x86_64-linux-gnu/asm/ioctl.h [INFO] [stderr] cargo:rerun-if-changed=/usr/include/asm-generic/ioctl.h [INFO] [stderr] cargo:rerun-if-changed=/usr/include/linux/irqnr.h [INFO] [stderr] [INFO] [stderr] --- stderr [INFO] [stderr] [INFO] [stderr] thread 'main' (1330) panicked at build.rs:23:10: [INFO] [stderr] Couldn't write bindings!: Os { code: 30, kind: ReadOnlyFilesystem, message: "Read-only file system" } [INFO] [stderr] stack backtrace: [INFO] [stderr] 0: 0x5c5f10e6a1ca - 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: 0x5c5f10e6a1ca - 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: 0x5c5f10e6a1ca - std[128c3efe2914e152]::sys::backtrace::_print_fmt [INFO] [stderr] at /rustc/8489f1adbe1c8f8921cf18b9962cf565237a5489/library/std/src/sys/backtrace.rs:74:9 [INFO] [stderr] 3: 0x5c5f10e6a1ca - <::print::DisplayBacktrace as core[6771d259883166e6]::fmt::Display>::fmt [INFO] [stderr] at /rustc/8489f1adbe1c8f8921cf18b9962cf565237a5489/library/std/src/sys/backtrace.rs:44:26 [INFO] [stderr] 4: 0x5c5f10e7f96a - ::fmt [INFO] [stderr] at /rustc/8489f1adbe1c8f8921cf18b9962cf565237a5489/library/core/src/fmt/rt.rs:152:76 [INFO] [stderr] 5: 0x5c5f10e7f96a - core[6771d259883166e6]::fmt::write [INFO] [stderr] 6: 0x5c5f10e6f142 - std[128c3efe2914e152]::io::default_write_fmt:: [INFO] [stderr] at /rustc/8489f1adbe1c8f8921cf18b9962cf565237a5489/library/std/src/io/mod.rs:621:11 [INFO] [stderr] 7: 0x5c5f10e6f142 - ::write_fmt [INFO] [stderr] at /rustc/8489f1adbe1c8f8921cf18b9962cf565237a5489/library/std/src/io/mod.rs:1976:13 [INFO] [stderr] 8: 0x5c5f10e4d57f - ::print [INFO] [stderr] at /rustc/8489f1adbe1c8f8921cf18b9962cf565237a5489/library/std/src/sys/backtrace.rs:47:9 [INFO] [stderr] 9: 0x5c5f10e4d57f - std[128c3efe2914e152]::panicking::default_hook::{closure#0} [INFO] [stderr] at /rustc/8489f1adbe1c8f8921cf18b9962cf565237a5489/library/std/src/panicking.rs:292:27 [INFO] [stderr] 10: 0x5c5f10e64a91 - std[128c3efe2914e152]::panicking::default_hook [INFO] [stderr] at /rustc/8489f1adbe1c8f8921cf18b9962cf565237a5489/library/std/src/panicking.rs:319:9 [INFO] [stderr] 11: 0x5c5f10e64d0b - std[128c3efe2914e152]::panicking::panic_with_hook [INFO] [stderr] at /rustc/8489f1adbe1c8f8921cf18b9962cf565237a5489/library/std/src/panicking.rs:825:13 [INFO] [stderr] 12: 0x5c5f10e4d638 - std[128c3efe2914e152]::panicking::panic_handler::{closure#0} [INFO] [stderr] at /rustc/8489f1adbe1c8f8921cf18b9962cf565237a5489/library/std/src/panicking.rs:698:13 [INFO] [stderr] 13: 0x5c5f10e42789 - std[128c3efe2914e152]::sys::backtrace::__rust_end_short_backtrace:: [INFO] [stderr] at /rustc/8489f1adbe1c8f8921cf18b9962cf565237a5489/library/std/src/sys/backtrace.rs:182:18 [INFO] [stderr] 14: 0x5c5f10e4df9d - __rustc[752cc74e29381ccc]::rust_begin_unwind [INFO] [stderr] at /rustc/8489f1adbe1c8f8921cf18b9962cf565237a5489/library/std/src/panicking.rs:689:5 [INFO] [stderr] 15: 0x5c5f10e801ac - core[6771d259883166e6]::panicking::panic_fmt [INFO] [stderr] at /rustc/8489f1adbe1c8f8921cf18b9962cf565237a5489/library/core/src/panicking.rs:80:14 [INFO] [stderr] 16: 0x5c5f10e7ff22 - core[6771d259883166e6]::result::unwrap_failed [INFO] [stderr] at /rustc/8489f1adbe1c8f8921cf18b9962cf565237a5489/library/core/src/result.rs:1867:5 [INFO] [stderr] 17: 0x5c5f109fa490 - core::result::Result::expect::hde170fdaf47abdf6 [INFO] [stderr] 18: 0x5c5f109f3d68 - build_script_build::main::heea0094abb00f812 [INFO] [stderr] 19: 0x5c5f109f4573 - core::ops::function::FnOnce::call_once::he421a693f4096d98 [INFO] [stderr] 20: 0x5c5f109f43c6 - std::sys::backtrace::__rust_begin_short_backtrace::h5eac68c53ffd8a70 [INFO] [stderr] 21: 0x5c5f109f43a9 - std::rt::lang_start::{{closure}}::hb57e029c90677bd8 [INFO] [stderr] 22: 0x5c5f10e63be4 - <&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: 0x5c5f10e63be4 - 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: 0x5c5f10e63be4 - 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: 0x5c5f10e63be4 - 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: 0x5c5f10e63be4 - std[128c3efe2914e152]::rt::lang_start_internal::{closure#0} [INFO] [stderr] at /rustc/8489f1adbe1c8f8921cf18b9962cf565237a5489/library/std/src/rt.rs:175:24 [INFO] [stderr] 27: 0x5c5f10e63be4 - std[128c3efe2914e152]::panicking::catch_unwind::do_call:: [INFO] [stderr] at /rustc/8489f1adbe1c8f8921cf18b9962cf565237a5489/library/std/src/panicking.rs:581:40 [INFO] [stderr] 28: 0x5c5f10e63be4 - std[128c3efe2914e152]::panicking::catch_unwind:: [INFO] [stderr] at /rustc/8489f1adbe1c8f8921cf18b9962cf565237a5489/library/std/src/panicking.rs:544:19 [INFO] [stderr] 29: 0x5c5f10e63be4 - std[128c3efe2914e152]::panic::catch_unwind:: [INFO] [stderr] at /rustc/8489f1adbe1c8f8921cf18b9962cf565237a5489/library/std/src/panic.rs:359:14 [INFO] [stderr] 30: 0x5c5f10e63be4 - std[128c3efe2914e152]::rt::lang_start_internal [INFO] [stderr] at /rustc/8489f1adbe1c8f8921cf18b9962cf565237a5489/library/std/src/rt.rs:171:5 [INFO] [stderr] 31: 0x5c5f109f4391 - std::rt::lang_start::h7052297912b980ab [INFO] [stderr] 32: 0x5c5f109f5a45 - main [INFO] [stderr] 33: 0x7697a07321ca - [INFO] [stderr] 34: 0x7697a073228b - __libc_start_main [INFO] [stderr] 35: 0x5c5f109f3a15 - _start [INFO] [stderr] 36: 0x0 - [INFO] [stderr] warning: build failed, waiting for other jobs to finish... [INFO] running `Command { std: "docker" "inspect" "48a904a7543a7cf0dc6c5ea8e92d2eb67a4eaef0fefa4cadad3d6d8bcab66cd2", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "48a904a7543a7cf0dc6c5ea8e92d2eb67a4eaef0fefa4cadad3d6d8bcab66cd2", kill_on_drop: false }` [INFO] [stdout] 48a904a7543a7cf0dc6c5ea8e92d2eb67a4eaef0fefa4cadad3d6d8bcab66cd2