[INFO] fetching crate lab_grader 0.11.0... [INFO] testing lab_grader-0.11.0 against 1.90.0 for beta-1.91-3 [INFO] extracting crate lab_grader 0.11.0 into /workspace/builds/worker-3-tc1/source [INFO] started tweaking crates.io crate lab_grader 0.11.0 [INFO] finished tweaking crates.io crate lab_grader 0.11.0 [INFO] tweaked toml for crates.io crate lab_grader 0.11.0 written to /workspace/builds/worker-3-tc1/source/Cargo.toml [INFO] validating manifest of crates.io crate lab_grader 0.11.0 on toolchain 1.90.0 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.90.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] crate crates.io crate lab_grader 0.11.0 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" "+1.90.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Updating crates.io index [INFO] [stderr] Downloading crates ... [INFO] [stderr] Downloaded state v0.4.1 [INFO] [stderr] Downloaded yansi v0.5.0 [INFO] [stderr] Downloaded rocket_http v0.4.5 [INFO] [stderr] Downloaded security-framework v0.4.4 [INFO] [stderr] Downloaded generator v0.6.21 [INFO] [stderr] Downloaded adler32 v1.1.0 [INFO] [stderr] Downloaded synstructure v0.12.4 [INFO] [stderr] Downloaded security-framework-sys v0.4.3 [INFO] [stderr] Downloaded pin-project-internal v0.4.22 [INFO] [stderr] Downloaded pin-project v0.4.22 [INFO] [stderr] Downloaded h2 v0.2.5 [INFO] [stderr] Downloaded object v0.20.0 [INFO] [stderr] Downloaded js-sys v0.3.41 [INFO] [stderr] Downloaded web-sys v0.3.41 [INFO] [stderr] Downloaded backtrace v0.3.49 [INFO] [stderr] Downloaded addr2line v0.12.2 [INFO] [stderr] Downloaded hyper v0.13.6 [INFO] [stderr] Downloaded wasm-bindgen v0.2.64 [INFO] [stderr] Downloaded reqwest v0.10.6 [INFO] [stderr] Downloaded mio v0.6.22 [INFO] [stderr] Downloaded aes-soft v0.3.3 [INFO] [stderr] Downloaded regex-automata v0.1.9 [INFO] [stderr] Downloaded aesni v0.6.0 [INFO] [stderr] Downloaded aes-gcm v0.5.0 [INFO] [stderr] Downloaded openssl v0.10.30 [INFO] [stderr] Downloaded unicode-normalization v0.1.13 [INFO] [stderr] Downloaded notify v4.0.15 [INFO] [stderr] Downloaded cookie v0.11.3 [INFO] [stderr] Downloaded bstr v0.2.13 [INFO] [stderr] Downloaded indexmap v1.4.0 [INFO] [stderr] Downloaded openssl-sys v0.9.58 [INFO] [stderr] Downloaded tokio v0.2.21 [INFO] [stderr] Downloaded net2 v0.2.34 [INFO] [stderr] Downloaded rocket_codegen v0.4.5 [INFO] [stderr] Downloaded loom v0.3.4 [INFO] [stderr] Downloaded bytes v0.5.5 [INFO] [stderr] Downloaded wasm-bindgen-backend v0.2.64 [INFO] [stderr] Downloaded inotify-sys v0.1.3 [INFO] [stderr] Downloaded devise_core v0.2.0 [INFO] [stderr] Downloaded aead v0.2.0 [INFO] [stderr] Downloaded polyval v0.3.3 [INFO] [stderr] Downloaded ghash v0.2.3 [INFO] [stderr] Downloaded hmac v0.7.1 [INFO] [stderr] Downloaded hermit-abi v0.1.14 [INFO] [stderr] Downloaded rocket v0.4.5 [INFO] [stderr] Downloaded ctor v0.1.15 [INFO] [stderr] Downloaded cc v1.0.56 [INFO] [stderr] Downloaded wasm-bindgen-futures v0.4.14 [INFO] [stderr] Downloaded devise_codegen v0.2.0 [INFO] [stderr] Downloaded block-cipher-trait v0.6.2 [INFO] [stderr] Downloaded universal-hash v0.3.0 [INFO] [stderr] Downloaded hkdf v0.8.0 [INFO] [stderr] Downloaded csv v1.1.3 [INFO] [stderr] Downloaded typenum v1.12.0 [INFO] [stderr] Downloaded traitobject v0.1.0 [INFO] [stderr] Downloaded tinyvec v0.3.3 [INFO] [stderr] Downloaded pear_codegen v0.1.4 [INFO] [stderr] Downloaded serde_json v1.0.56 [INFO] [stderr] Downloaded wasm-bindgen-macro v0.2.64 [INFO] [stderr] Downloaded aes v0.3.2 [INFO] [stderr] Downloaded subtle v2.2.3 [INFO] [stderr] Downloaded pear v0.1.4 [INFO] [stderr] Downloaded smallvec v1.4.0 [INFO] [stderr] Downloaded rocket_contrib v0.4.5 [INFO] [stderr] Downloaded dtoa v0.4.6 [INFO] [stderr] Downloaded serde_yaml v0.8.13 [INFO] [stderr] Downloaded wasm-bindgen-shared v0.2.64 [INFO] [stderr] Downloaded wasm-bindgen-macro-support v0.2.64 [INFO] [stderr] Downloaded filetime v0.2.10 [INFO] [stderr] Downloaded devise v0.2.0 [INFO] [stderr] Downloaded zeroize v1.1.0 [INFO] [stderr] Downloaded encoding_rs v0.8.23 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 58a4775263c6a9fe52b11a013af5eee85759e1f24b7c1b12f7e6c74598f44626 [INFO] running `Command { std: "docker" "start" "-a" "58a4775263c6a9fe52b11a013af5eee85759e1f24b7c1b12f7e6c74598f44626", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "58a4775263c6a9fe52b11a013af5eee85759e1f24b7c1b12f7e6c74598f44626", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "58a4775263c6a9fe52b11a013af5eee85759e1f24b7c1b12f7e6c74598f44626", kill_on_drop: false }` [INFO] [stdout] 58a4775263c6a9fe52b11a013af5eee85759e1f24b7c1b12f7e6c74598f44626 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 9d196e2e1db6d6a7f1f73aa1f1ce87760d25c7833dcaca35c2feab8604c80eb6 [INFO] running `Command { std: "docker" "start" "-a" "9d196e2e1db6d6a7f1f73aa1f1ce87760d25c7833dcaca35c2feab8604c80eb6", kill_on_drop: false }` [INFO] [stderr] Compiling libc v0.2.71 [INFO] [stderr] Compiling syn v1.0.33 [INFO] [stderr] Compiling typenum v1.12.0 [INFO] [stderr] Compiling log v0.4.8 [INFO] [stderr] Compiling memchr v2.3.3 [INFO] [stderr] Compiling serde_derive v1.0.114 [INFO] [stderr] Compiling proc-macro2 v0.4.30 [INFO] [stderr] Compiling serde v1.0.114 [INFO] [stderr] Compiling tinyvec v0.3.3 [INFO] [stderr] Compiling yansi v0.5.0 [INFO] [stderr] Compiling syn v0.15.44 [INFO] [stderr] Compiling indexmap v1.4.0 [INFO] [stderr] Compiling pkg-config v0.3.17 [INFO] [stderr] Compiling cc v1.0.56 [INFO] [stderr] Compiling opaque-debug v0.2.3 [INFO] [stderr] Compiling futures-core v0.3.5 [INFO] [stderr] Compiling bytes v0.5.5 [INFO] [stderr] Compiling unicode-normalization v0.1.13 [INFO] [stderr] Compiling subtle v2.2.3 [INFO] [stderr] Compiling pin-project-internal v0.4.22 [INFO] [stderr] Compiling byte-tools v0.3.1 [INFO] [stderr] Compiling subtle v1.0.0 [INFO] [stderr] Compiling pear_codegen v0.1.4 [INFO] [stderr] Compiling pin-project-lite v0.1.7 [INFO] [stderr] Compiling once_cell v1.4.0 [INFO] [stderr] Compiling block-padding v0.1.5 [INFO] [stderr] Compiling openssl v0.10.30 [INFO] [stderr] Compiling log v0.3.9 [INFO] [stderr] Compiling base64 v0.12.3 [INFO] [stderr] Compiling zeroize v1.1.0 [INFO] [stderr] error: failed to run custom build command for `pear_codegen v0.1.4` [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/pear_codegen-5b7f599870f980fd/build-script-build` (exit status: 101) [INFO] [stderr] --- stderr [INFO] [stderr] Error: Pear requires a 'dev' or 'nightly' version of rustc. [INFO] [stderr] Installed version: 1.90.0 (2025-09-14) [INFO] [stderr] Minimum required: 1.31.0-nightly (2018-10-05) [INFO] [stderr] [INFO] [stderr] thread 'main' panicked at /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/pear_codegen-0.1.4/build.rs:24:13: [INFO] [stderr] Aborting compilation due to incompatible compiler. [INFO] [stderr] stack backtrace: [INFO] [stderr] 0: 0x5b89bc4206e2 - std::backtrace_rs::backtrace::libunwind::trace::h2d45396358f41939 [INFO] [stderr] at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9 [INFO] [stderr] 1: 0x5b89bc4206e2 - std::backtrace_rs::backtrace::trace_unsynchronized::hffcefc0b67f1d6e2 [INFO] [stderr] at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14 [INFO] [stderr] 2: 0x5b89bc4206e2 - std::sys::backtrace::_print_fmt::hd72f71d23b436b92 [INFO] [stderr] at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/sys/backtrace.rs:66:9 [INFO] [stderr] 3: 0x5b89bc4206e2 - ::fmt::hdcfcb6d4c8489523 [INFO] [stderr] at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/sys/backtrace.rs:39:26 [INFO] [stderr] 4: 0x5b89bc440043 - core::fmt::rt::Argument::fmt::h2c56b3114963061a [INFO] [stderr] at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/core/src/fmt/rt.rs:173:76 [INFO] [stderr] 5: 0x5b89bc440043 - core::fmt::write::h8a494366950f23bb [INFO] [stderr] at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/core/src/fmt/mod.rs:1468:25 [INFO] [stderr] 6: 0x5b89bc41dfc3 - std::io::default_write_fmt::ha27fbccbc65eb6fa [INFO] [stderr] at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/io/mod.rs:639:11 [INFO] [stderr] 7: 0x5b89bc41dfc3 - std::io::Write::write_fmt::h6556609fca33d0b1 [INFO] [stderr] at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/io/mod.rs:1954:13 [INFO] [stderr] 8: 0x5b89bc420532 - std::sys::backtrace::BacktraceLock::print::hb2a626a81e06b2dc [INFO] [stderr] at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/sys/backtrace.rs:42:9 [INFO] [stderr] 9: 0x5b89bc4215d3 - std::panicking::default_hook::{{closure}}::h4f78485264f12d10 [INFO] [stderr] at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panicking.rs:300:27 [INFO] [stderr] 10: 0x5b89bc4213b5 - std::panicking::default_hook::h2c66fc99e962531d [INFO] [stderr] at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panicking.rs:327:9 [INFO] [stderr] 11: 0x5b89bc421fa5 - std::panicking::rust_panic_with_hook::h33ac55f64bbd807d [INFO] [stderr] at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panicking.rs:833:13 [INFO] [stderr] 12: 0x5b89bc421e7c - std::panicking::begin_panic::{{closure}}::h9f4a5adc680e21fa [INFO] [stderr] at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panicking.rs:770:9 [INFO] [stderr] 13: 0x5b89bc420bd9 - std::sys::backtrace::__rust_end_short_backtrace::hb5f90b203e68dc50 [INFO] [stderr] at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/sys/backtrace.rs:174:18 [INFO] [stderr] 14: 0x5b89bc421d92 - std::panicking::begin_panic::h5128ce11a6f84a23 [INFO] [stderr] at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panicking.rs:769:5 [INFO] [stderr] 15: 0x5b89bc3ea71f - build_script_build::main::hbc59639b4cf33d15 [INFO] [stderr] 16: 0x5b89bc3e76d3 - core::ops::function::FnOnce::call_once::haeb1c204d2832ee2 [INFO] [stderr] 17: 0x5b89bc3e7446 - std::sys::backtrace::__rust_begin_short_backtrace::h09d3cd81dcedec93 [INFO] [stderr] 18: 0x5b89bc3e7429 - std::rt::lang_start::{{closure}}::he577a67cf0fcba21 [INFO] [stderr] 19: 0x5b89bc41a650 - core::ops::function::impls:: for &F>::call_once::h638295a043b40957 [INFO] [stderr] at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/core/src/ops/function.rs:290:21 [INFO] [stderr] 20: 0x5b89bc41a650 - std::panicking::catch_unwind::do_call::hbd68098bdea1ca50 [INFO] [stderr] at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panicking.rs:589:40 [INFO] [stderr] 21: 0x5b89bc41a650 - std::panicking::catch_unwind::h50591d85bf847c7c [INFO] [stderr] at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panicking.rs:552:19 [INFO] [stderr] 22: 0x5b89bc41a650 - std::panic::catch_unwind::h2487b4c4f2ae22c6 [INFO] [stderr] at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panic.rs:359:14 [INFO] [stderr] 23: 0x5b89bc41a650 - std::rt::lang_start_internal::{{closure}}::h61f0945cc6c9a811 [INFO] [stderr] at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/rt.rs:175:24 [INFO] [stderr] 24: 0x5b89bc41a650 - std::panicking::catch_unwind::do_call::h34b9c3722acd6bd1 [INFO] [stderr] at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panicking.rs:589:40 [INFO] [stderr] 25: 0x5b89bc41a650 - std::panicking::catch_unwind::hf9a822ea043fb0d6 [INFO] [stderr] at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panicking.rs:552:19 [INFO] [stderr] 26: 0x5b89bc41a650 - std::panic::catch_unwind::h5b3cac802237ed89 [INFO] [stderr] at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panic.rs:359:14 [INFO] [stderr] 27: 0x5b89bc41a650 - std::rt::lang_start_internal::h34f9328d113fd60a [INFO] [stderr] at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/rt.rs:171:5 [INFO] [stderr] 28: 0x5b89bc3e7411 - std::rt::lang_start::h37e9b802d06794d5 [INFO] [stderr] 29: 0x5b89bc3eab65 - main [INFO] [stderr] 30: 0x7669ba8711ca - [INFO] [stderr] 31: 0x7669ba87128b - __libc_start_main [INFO] [stderr] 32: 0x5b89bc3e7105 - _start [INFO] [stderr] 33: 0x0 - [INFO] [stderr] warning: build failed, waiting for other jobs to finish... [INFO] running `Command { std: "docker" "inspect" "9d196e2e1db6d6a7f1f73aa1f1ce87760d25c7833dcaca35c2feab8604c80eb6", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "9d196e2e1db6d6a7f1f73aa1f1ce87760d25c7833dcaca35c2feab8604c80eb6", kill_on_drop: false }` [INFO] [stdout] 9d196e2e1db6d6a7f1f73aa1f1ce87760d25c7833dcaca35c2feab8604c80eb6