[INFO] fetching crate tcl-mcp-server 0.1.2... [INFO] testing tcl-mcp-server-0.1.2 against beta-2025-10-28 for beta-1.92-2 [INFO] extracting crate tcl-mcp-server 0.1.2 into /workspace/builds/worker-3-tc2/source [INFO] started tweaking crates.io crate tcl-mcp-server 0.1.2 [INFO] removed 0 missing tests [INFO] finished tweaking crates.io crate tcl-mcp-server 0.1.2 [INFO] tweaked toml for crates.io crate tcl-mcp-server 0.1.2 written to /workspace/builds/worker-3-tc2/source/Cargo.toml [INFO] validating manifest of crates.io crate tcl-mcp-server 0.1.2 on toolchain beta-2025-10-28 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2025-10-28" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] crate crates.io crate tcl-mcp-server 0.1.2 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-2025-10-28" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-10-28" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 56c1982d9969b222086708eeb6123054eba7c7abbc41f155ad1629073c354527 [INFO] running `Command { std: "docker" "start" "-a" "56c1982d9969b222086708eeb6123054eba7c7abbc41f155ad1629073c354527", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "56c1982d9969b222086708eeb6123054eba7c7abbc41f155ad1629073c354527", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "56c1982d9969b222086708eeb6123054eba7c7abbc41f155ad1629073c354527", kill_on_drop: false }` [INFO] [stdout] 56c1982d9969b222086708eeb6123054eba7c7abbc41f155ad1629073c354527 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-10-28" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 8a2028a9a6041a89ee1d4da2fd00570a7be4d63493cb7b00519b2f27031f8979 [INFO] running `Command { std: "docker" "start" "-a" "8a2028a9a6041a89ee1d4da2fd00570a7be4d63493cb7b00519b2f27031f8979", kill_on_drop: false }` [INFO] [stderr] Compiling proc-macro2 v1.0.95 [INFO] [stderr] Compiling libc v0.2.174 [INFO] [stderr] Compiling cfg-if v1.0.1 [INFO] [stderr] Compiling smallvec v1.15.1 [INFO] [stderr] Compiling stable_deref_trait v1.2.0 [INFO] [stderr] Compiling parking_lot_core v0.9.11 [INFO] [stderr] Compiling memchr v2.7.5 [INFO] [stderr] Compiling lock_api v0.4.13 [INFO] [stderr] Compiling slab v0.4.10 [INFO] [stderr] Compiling cc v1.2.29 [INFO] [stderr] Compiling litemap v0.8.0 [INFO] [stderr] Compiling writeable v0.6.1 [INFO] [stderr] Compiling icu_normalizer_data v2.0.0 [INFO] [stderr] Compiling icu_properties_data v2.0.1 [INFO] [stderr] Compiling serde_json v1.0.140 [INFO] [stderr] Compiling hashbrown v0.15.4 [INFO] [stderr] Compiling bitflags v2.9.1 [INFO] [stderr] Compiling openssl v0.10.73 [INFO] [stderr] Compiling crossbeam-utils v0.8.21 [INFO] [stderr] Compiling regex-syntax v0.8.5 [INFO] [stderr] Compiling regex-syntax v0.6.29 [INFO] [stderr] Compiling anstyle-parse v0.2.7 [INFO] [stderr] Compiling sync_wrapper v1.0.2 [INFO] [stderr] Compiling indexmap v1.9.3 [INFO] [stderr] Compiling colorchoice v1.0.4 [INFO] [stderr] Compiling anstyle-query v1.1.3 [INFO] [stderr] Compiling base64 v0.22.1 [INFO] [stderr] Compiling anstyle v1.0.11 [INFO] [stderr] Compiling powerfmt v0.2.0 [INFO] [stderr] Compiling getrandom v0.3.3 [INFO] [stderr] Compiling thread_local v1.1.9 [INFO] [stderr] Compiling deranged v0.4.0 [INFO] [stderr] Compiling tracing-log v0.2.0 [INFO] [stderr] Compiling iri-string v0.7.8 [INFO] [stderr] Compiling time-core v0.1.4 [INFO] [stderr] Compiling indexmap v2.10.0 [INFO] [stderr] Compiling num-conv v0.1.0 [INFO] [stderr] Compiling anyhow v1.0.98 [INFO] [stderr] Compiling anstream v0.6.19 [INFO] [stderr] Compiling crossbeam-channel v0.5.15 [INFO] [stderr] Compiling schemars v0.8.22 [INFO] [stderr] Compiling clap_lex v0.7.5 [INFO] [stderr] Compiling rustls-pki-types v1.12.0 [INFO] [stderr] Compiling encoding_rs v0.8.35 [INFO] [stderr] Compiling tcl-mcp-server v0.1.2 (/opt/rustwide/workdir) [INFO] [stderr] Compiling socket2 v0.5.10 [INFO] [stderr] Compiling signal-hook-registry v1.4.5 [INFO] [stderr] Compiling mio v1.0.4 [INFO] [stderr] Compiling inotify-sys v0.1.5 [INFO] [stderr] Compiling parking_lot v0.12.4 [INFO] [stderr] Compiling quote v1.0.40 [INFO] [stderr] Compiling inotify v0.9.6 [INFO] [stderr] Compiling mio v0.8.11 [INFO] [stderr] Compiling time v0.3.41 [INFO] [stderr] Compiling syn v2.0.104 [INFO] [stderr] Compiling filetime v0.2.25 [INFO] [stderr] Compiling dirs-sys v0.4.1 [INFO] [stderr] Compiling clap_builder v4.5.41 [INFO] [stderr] Compiling hashbrown v0.14.5 [INFO] [stderr] Compiling dyn-clone v1.0.19 [INFO] [stderr] Compiling openssl-sys v0.9.109 [INFO] [stderr] Compiling iana-time-zone v0.1.63 [INFO] [stderr] Compiling dirs v5.0.1 [INFO] [stderr] Compiling notify v6.1.1 [INFO] [stderr] Compiling molt v0.3.1 [INFO] [stderr] error: failed to run custom build command for `tcl-mcp-server v0.1.2 (/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/tcl-mcp-server-ff977f9c94e78da5/build-script-build` (exit status: 101) [INFO] [stderr] --- stderr [INFO] [stderr] [INFO] [stderr] thread 'main' (965) panicked at build.rs:178:36: [INFO] [stderr] Failed to create target directory: Os { code: 30, kind: ReadOnlyFilesystem, message: "Read-only file system" } [INFO] [stderr] stack backtrace: [INFO] [stderr] 0: 0x58f44d37d792 - std::backtrace_rs::backtrace::libunwind::trace::h16acf28769fcd909 [INFO] [stderr] at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9 [INFO] [stderr] 1: 0x58f44d37d792 - std::backtrace_rs::backtrace::trace_unsynchronized::hb5541aa5d4f92513 [INFO] [stderr] at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14 [INFO] [stderr] 2: 0x58f44d37d792 - std::sys::backtrace::_print_fmt::h8ac8268cb667a306 [INFO] [stderr] at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/std/src/sys/backtrace.rs:66:9 [INFO] [stderr] 3: 0x58f44d37d792 - ::fmt::h47627beda0767f4c [INFO] [stderr] at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/std/src/sys/backtrace.rs:39:26 [INFO] [stderr] 4: 0x58f44d38c86f - core::fmt::rt::Argument::fmt::h686a01ad57c1c92a [INFO] [stderr] at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/core/src/fmt/rt.rs:173:76 [INFO] [stderr] 5: 0x58f44d38c86f - core::fmt::write::h8a63064c67176fd8 [INFO] [stderr] at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/core/src/fmt/mod.rs:1469:25 [INFO] [stderr] 6: 0x58f44d35af43 - std::io::default_write_fmt::hc257f38f86d39af6 [INFO] [stderr] at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/std/src/io/mod.rs:639:11 [INFO] [stderr] 7: 0x58f44d35af43 - std::io::Write::write_fmt::h5e9b646cef91150b [INFO] [stderr] at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/std/src/io/mod.rs:1954:13 [INFO] [stderr] 8: 0x58f44d3609f2 - std::sys::backtrace::BacktraceLock::print::h4634d27c0afbaebb [INFO] [stderr] at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/std/src/sys/backtrace.rs:42:9 [INFO] [stderr] 9: 0x58f44d36246c - std::panicking::default_hook::{{closure}}::h23e0299d4738b766 [INFO] [stderr] at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/std/src/panicking.rs:301:27 [INFO] [stderr] 10: 0x58f44d3622c6 - std::panicking::default_hook::hfeec6294e8751b62 [INFO] [stderr] at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/std/src/panicking.rs:328:9 [INFO] [stderr] 11: 0x58f44d362a45 - std::panicking::panic_with_hook::hd57cd463d793ed79 [INFO] [stderr] at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/std/src/panicking.rs:834:13 [INFO] [stderr] 12: 0x58f44d3628da - std::panicking::panic_handler::{{closure}}::hddd6216c3fddee3b [INFO] [stderr] at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/std/src/panicking.rs:707:13 [INFO] [stderr] 13: 0x58f44d360b29 - std::sys::backtrace::__rust_end_short_backtrace::h5e7a56f283378525 [INFO] [stderr] at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/std/src/sys/backtrace.rs:174:18 [INFO] [stderr] 14: 0x58f44d34f50d - __rustc[256c90bb7e548b45]::rust_begin_unwind [INFO] [stderr] at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/std/src/panicking.rs:698:5 [INFO] [stderr] 15: 0x58f44d38fd70 - core::panicking::panic_fmt::hf19c198748ef6a95 [INFO] [stderr] at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/core/src/panicking.rs:80:14 [INFO] [stderr] 16: 0x58f44d38f526 - core::result::unwrap_failed::he81173b5792ad6b0 [INFO] [stderr] at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/core/src/result.rs:1862:5 [INFO] [stderr] 17: 0x58f44d34e510 - core::result::Result::expect::h61c2ef2edb73bf81 [INFO] [stderr] 18: 0x58f44d34c5b9 - build_script_build::main::hfe3bb0b1449ac357 [INFO] [stderr] 19: 0x58f44d34d743 - core::ops::function::FnOnce::call_once::hbc4ae7f5dd62e8ea [INFO] [stderr] 20: 0x58f44d34d586 - std::sys::backtrace::__rust_begin_short_backtrace::hacc0e2c57d108819 [INFO] [stderr] 21: 0x58f44d34d4e9 - std::rt::lang_start::{{closure}}::hf6df633193cdb6e4 [INFO] [stderr] 22: 0x58f44d35c770 - core::ops::function::impls:: for &F>::call_once::hdf957eac011d0136 [INFO] [stderr] at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/core/src/ops/function.rs:287:21 [INFO] [stderr] 23: 0x58f44d35c770 - std::panicking::catch_unwind::do_call::h9ff550f7799115e1 [INFO] [stderr] at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/std/src/panicking.rs:590:40 [INFO] [stderr] 24: 0x58f44d35c770 - std::panicking::catch_unwind::ha7ce46787bb12905 [INFO] [stderr] at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/std/src/panicking.rs:553:19 [INFO] [stderr] 25: 0x58f44d35c770 - std::panic::catch_unwind::h625b36596def7d39 [INFO] [stderr] at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/std/src/panic.rs:359:14 [INFO] [stderr] 26: 0x58f44d35c770 - std::rt::lang_start_internal::{{closure}}::h4cbc9430de699e2c [INFO] [stderr] at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/std/src/rt.rs:175:24 [INFO] [stderr] 27: 0x58f44d35c770 - std::panicking::catch_unwind::do_call::h5af2f11409a22e3e [INFO] [stderr] at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/std/src/panicking.rs:590:40 [INFO] [stderr] 28: 0x58f44d35c770 - std::panicking::catch_unwind::hf64cf7b0d8070f52 [INFO] [stderr] at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/std/src/panicking.rs:553:19 [INFO] [stderr] 29: 0x58f44d35c770 - std::panic::catch_unwind::h480b74763390cdcf [INFO] [stderr] at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/std/src/panic.rs:359:14 [INFO] [stderr] 30: 0x58f44d35c770 - std::rt::lang_start_internal::h4b3d04f698aef094 [INFO] [stderr] at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/std/src/rt.rs:171:5 [INFO] [stderr] 31: 0x58f44d34d4d1 - std::rt::lang_start::h96c0f553f1194f9c [INFO] [stderr] 32: 0x58f44d34f225 - main [INFO] [stderr] 33: 0x7820e70bf1ca - [INFO] [stderr] 34: 0x7820e70bf28b - __libc_start_main [INFO] [stderr] 35: 0x58f44d34b9d5 - _start [INFO] [stderr] 36: 0x0 - [INFO] [stderr] warning: build failed, waiting for other jobs to finish... [INFO] running `Command { std: "docker" "inspect" "8a2028a9a6041a89ee1d4da2fd00570a7be4d63493cb7b00519b2f27031f8979", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "8a2028a9a6041a89ee1d4da2fd00570a7be4d63493cb7b00519b2f27031f8979", kill_on_drop: false }` [INFO] [stdout] 8a2028a9a6041a89ee1d4da2fd00570a7be4d63493cb7b00519b2f27031f8979