[INFO] fetching crate rust-mnist 0.2.0... [INFO] testing rust-mnist-0.2.0 against beta-2025-09-21 for beta-1.91-3 [INFO] extracting crate rust-mnist 0.2.0 into /workspace/builds/worker-7-tc2/source [INFO] started tweaking crates.io crate rust-mnist 0.2.0 [INFO] finished tweaking crates.io crate rust-mnist 0.2.0 [INFO] tweaked toml for crates.io crate rust-mnist 0.2.0 written to /workspace/builds/worker-7-tc2/source/Cargo.toml [INFO] validating manifest of crates.io crate rust-mnist 0.2.0 on toolchain beta-2025-09-21 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2025-09-21" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] crate crates.io crate rust-mnist 0.2.0 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" "+beta-2025-09-21" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 3c60ddcb2bfa16b1ac0d7fac69cd397b574a8d595aab96b665a60d5e253ea6e9 [INFO] running `Command { std: "docker" "start" "-a" "3c60ddcb2bfa16b1ac0d7fac69cd397b574a8d595aab96b665a60d5e253ea6e9", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "3c60ddcb2bfa16b1ac0d7fac69cd397b574a8d595aab96b665a60d5e253ea6e9", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "3c60ddcb2bfa16b1ac0d7fac69cd397b574a8d595aab96b665a60d5e253ea6e9", kill_on_drop: false }` [INFO] [stdout] 3c60ddcb2bfa16b1ac0d7fac69cd397b574a8d595aab96b665a60d5e253ea6e9 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 27bb715612d8923605b77b7e94c58da712b3bd5d35b0fd0a560d7f281ce12211 [INFO] running `Command { std: "docker" "start" "-a" "27bb715612d8923605b77b7e94c58da712b3bd5d35b0fd0a560d7f281ce12211", kill_on_drop: false }` [INFO] [stderr] Compiling rust-mnist v0.2.0 (/opt/rustwide/workdir) [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.31s [INFO] running `Command { std: "docker" "inspect" "27bb715612d8923605b77b7e94c58da712b3bd5d35b0fd0a560d7f281ce12211", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "27bb715612d8923605b77b7e94c58da712b3bd5d35b0fd0a560d7f281ce12211", kill_on_drop: false }` [INFO] [stdout] 27bb715612d8923605b77b7e94c58da712b3bd5d35b0fd0a560d7f281ce12211 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 030397ced3874b40c7a9d29d20fb29177b77e829c73289ab91bc5a6e5630156c [INFO] running `Command { std: "docker" "start" "-a" "030397ced3874b40c7a9d29d20fb29177b77e829c73289ab91bc5a6e5630156c", kill_on_drop: false }` [INFO] [stderr] Compiling libc v0.2.139 [INFO] [stderr] Compiling crossbeam-utils v0.8.14 [INFO] [stderr] Compiling syn v1.0.107 [INFO] [stderr] Compiling memoffset v0.7.1 [INFO] [stderr] Compiling serde_derive v1.0.151 [INFO] [stderr] Compiling crossbeam-epoch v0.9.13 [INFO] [stderr] Compiling serde v1.0.151 [INFO] [stderr] Compiling num-traits v0.2.15 [INFO] [stderr] Compiling indexmap v1.9.2 [INFO] [stderr] Compiling rayon-core v1.10.1 [INFO] [stderr] Compiling either v1.8.0 [INFO] [stderr] Compiling serde_json v1.0.91 [INFO] [stderr] Compiling ciborium-io v0.2.0 [INFO] [stderr] Compiling half v1.8.2 [INFO] [stderr] Compiling ryu v1.0.12 [INFO] [stderr] Compiling itoa v1.0.5 [INFO] [stderr] Compiling plotters-backend v0.3.4 [INFO] [stderr] Compiling itertools v0.10.5 [INFO] [stderr] Compiling clap_lex v0.2.4 [INFO] [stderr] Compiling textwrap v0.16.0 [INFO] [stderr] Compiling regex-syntax v0.6.28 [INFO] [stderr] Compiling ciborium-ll v0.2.0 [INFO] [stderr] Compiling walkdir v2.3.2 [INFO] [stderr] Compiling oorandom v11.1.3 [INFO] [stderr] Compiling plotters-svg v0.3.3 [INFO] [stderr] Compiling clap v3.2.23 [INFO] [stderr] Compiling crossbeam-channel v0.5.6 [INFO] [stderr] Compiling crossbeam-deque v0.8.2 [INFO] [stderr] Compiling plotters v0.3.4 [INFO] [stderr] Compiling num_cpus v1.15.0 [INFO] [stderr] Compiling getrandom v0.2.8 [INFO] [stderr] Compiling atty v0.2.14 [INFO] [stderr] Compiling rand_core v0.6.4 [INFO] [stderr] Compiling criterion-plot v0.5.0 [INFO] [stderr] Compiling rand_chacha v0.3.1 [INFO] [stderr] Compiling rand v0.8.5 [INFO] [stderr] Compiling regex v1.7.0 [INFO] [stderr] Compiling rayon v1.6.1 [INFO] [stderr] Compiling ciborium v0.2.0 [INFO] [stderr] Compiling tinytemplate v1.2.1 [INFO] [stderr] Compiling criterion v0.4.0 [INFO] [stderr] Compiling rust-mnist v0.2.0 (/opt/rustwide/workdir) [INFO] [stderr] Finished `test` profile [unoptimized + debuginfo] target(s) in 25.01s [INFO] running `Command { std: "docker" "inspect" "030397ced3874b40c7a9d29d20fb29177b77e829c73289ab91bc5a6e5630156c", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "030397ced3874b40c7a9d29d20fb29177b77e829c73289ab91bc5a6e5630156c", kill_on_drop: false }` [INFO] [stdout] 030397ced3874b40c7a9d29d20fb29177b77e829c73289ab91bc5a6e5630156c [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "test" "--frozen", kill_on_drop: false }` [INFO] [stdout] ab008bb1d874162fea2588a3f2bb23d9b818de0b02bf3a48ee45d15b2175ea85 [INFO] running `Command { std: "docker" "start" "-a" "ab008bb1d874162fea2588a3f2bb23d9b818de0b02bf3a48ee45d15b2175ea85", kill_on_drop: false }` [INFO] [stderr] Finished `test` profile [unoptimized + debuginfo] target(s) in 0.11s [INFO] [stderr] Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/rust_mnist-59b8355b05cec237) [INFO] [stdout] [INFO] [stdout] running 0 tests [INFO] [stdout] [INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s [INFO] [stdout] [INFO] [stderr] Doc-tests rust_mnist [INFO] [stdout] [INFO] [stdout] running 1 test [INFO] [stdout] test src/lib.rs - print_image (line 153) ... FAILED [INFO] [stdout] [INFO] [stdout] failures: [INFO] [stdout] [INFO] [stdout] ---- src/lib.rs - print_image (line 153) stdout ---- [INFO] [stdout] Test executable failed (exit status: 101). [INFO] [stdout] [INFO] [stdout] stderr: [INFO] [stdout] [INFO] [stdout] thread 'main' (55) panicked at src/lib.rs:45:84: [INFO] [stdout] Training data file "examples/MNIST_data/train-images-idx3-ubyte" not found; did you remember to download and extract it?: Os { code: 2, kind: NotFound, message: "No such file or directory" } [INFO] [stdout] stack backtrace: [INFO] [stdout] 0: 0x61d6d241b742 - std::backtrace_rs::backtrace::libunwind::trace::hcab59e1e990fdc24 [INFO] [stdout] at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9 [INFO] [stdout] 1: 0x61d6d241b742 - std::backtrace_rs::backtrace::trace_unsynchronized::he24cc57f3d2f47b7 [INFO] [stdout] at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14 [INFO] [stdout] 2: 0x61d6d241b742 - std::sys::backtrace::_print_fmt::hf8d65ede198eeb54 [INFO] [stdout] at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/sys/backtrace.rs:66:9 [INFO] [stdout] 3: 0x61d6d241b742 - ::fmt::h67edf0e4d33c343c [INFO] [stdout] at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/sys/backtrace.rs:39:26 [INFO] [stdout] 4: 0x61d6d242a90f - core::fmt::rt::Argument::fmt::hef94184842aeafdd [INFO] [stdout] at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/core/src/fmt/rt.rs:173:76 [INFO] [stdout] 5: 0x61d6d242a90f - core::fmt::write::hcf0c66b48a8fa606 [INFO] [stdout] at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/core/src/fmt/mod.rs:1468:25 [INFO] [stdout] 6: 0x61d6d23f8f91 - std::io::default_write_fmt::h1ecb8c7cfa7da481 [INFO] [stdout] at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/io/mod.rs:639:11 [INFO] [stdout] 7: 0x61d6d23f8f91 - std::io::Write::write_fmt::h051fe4a9e4fdbf48 [INFO] [stdout] at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/io/mod.rs:1954:13 [INFO] [stdout] 8: 0x61d6d23fe7d2 - std::sys::backtrace::BacktraceLock::print::h07e5435aa717b414 [INFO] [stdout] at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/sys/backtrace.rs:42:9 [INFO] [stdout] 9: 0x61d6d240010c - std::panicking::default_hook::{{closure}}::h91001850288db5f7 [INFO] [stdout] at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/panicking.rs:301:27 [INFO] [stdout] 10: 0x61d6d23fff66 - std::panicking::default_hook::h2346dbb704ef5512 [INFO] [stdout] at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/panicking.rs:328:9 [INFO] [stdout] 11: 0x61d6d2400795 - std::panicking::panic_with_hook::hd2b063a6090d23a4 [INFO] [stdout] at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/panicking.rs:834:13 [INFO] [stdout] 12: 0x61d6d240062a - std::panicking::panic_handler::{{closure}}::he666d95f139a333e [INFO] [stdout] at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/panicking.rs:707:13 [INFO] [stdout] 13: 0x61d6d23fe909 - std::sys::backtrace::__rust_end_short_backtrace::h631ad224854ebee5 [INFO] [stdout] at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/sys/backtrace.rs:174:18 [INFO] [stdout] 14: 0x61d6d23ed9ed - __rustc[1d67440d6e82e4f]::rust_begin_unwind [INFO] [stdout] at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/panicking.rs:698:5 [INFO] [stdout] 15: 0x61d6d242de50 - core::panicking::panic_fmt::h420ddb7fd73daf53 [INFO] [stdout] at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/core/src/panicking.rs:75:14 [INFO] [stdout] 16: 0x61d6d242d646 - core::result::unwrap_failed::hdde076be853d034f [INFO] [stdout] at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/core/src/result.rs:1855:5 [INFO] [stdout] 17: 0x61d6d23e8fdc - core::result::Result::expect::hdb0e790878ce7f56 [INFO] [stdout] at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/core/src/result.rs:1178:23 [INFO] [stdout] 18: 0x61d6d23e4588 - rust_mnist::Mnist::new::h196f3462e645348f [INFO] [stdout] at /opt/rustwide/workdir/src/lib.rs:45:84 [INFO] [stdout] 19: 0x61d6d23e2666 - rust_out::main::_doctest_main_src_lib_rs_153_0::h8c8c2e6bed1c9d18 [INFO] [stdout] 20: 0x61d6d23e2636 - rust_out::main::h909c389308a13d94 [INFO] [stdout] 21: 0x61d6d23e21c3 - core::ops::function::FnOnce::call_once::he80aaf16098e337a [INFO] [stdout] 22: 0x61d6d23e2166 - std::sys::backtrace::__rust_begin_short_backtrace::hd4f5856814720a68 [INFO] [stdout] 23: 0x61d6d23e2149 - std::rt::lang_start::{{closure}}::hdd522a24cafb4b4b [INFO] [stdout] 24: 0x61d6d23fa800 - core::ops::function::impls:: for &F>::call_once::h4967fb77e0dfb65c [INFO] [stdout] at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/core/src/ops/function.rs:287:21 [INFO] [stdout] 25: 0x61d6d23fa800 - std::panicking::catch_unwind::do_call::hf7e87675c3e14c23 [INFO] [stdout] at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/panicking.rs:590:40 [INFO] [stdout] 26: 0x61d6d23fa800 - std::panicking::catch_unwind::h26f0e342004b5114 [INFO] [stdout] at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/panicking.rs:553:19 [INFO] [stdout] 27: 0x61d6d23fa800 - std::panic::catch_unwind::h9ee33ca17775d897 [INFO] [stdout] at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/panic.rs:359:14 [INFO] [stdout] 28: 0x61d6d23fa800 - std::rt::lang_start_internal::{{closure}}::h243ba3495fa13cf8 [INFO] [stdout] at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/rt.rs:175:24 [INFO] [stdout] 29: 0x61d6d23fa800 - std::panicking::catch_unwind::do_call::h819db0a7788e7259 [INFO] [stdout] at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/panicking.rs:590:40 [INFO] [stdout] 30: 0x61d6d23fa800 - std::panicking::catch_unwind::h23e08fb4a7b9f405 [INFO] [stdout] at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/panicking.rs:553:19 [INFO] [stdout] 31: 0x61d6d23fa800 - std::panic::catch_unwind::h7ca3d9eabb6135ff [INFO] [stdout] at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/panic.rs:359:14 [INFO] [stdout] 32: 0x61d6d23fa800 - std::rt::lang_start_internal::h06ad7395f4fda8d7 [INFO] [stdout] at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/rt.rs:171:5 [INFO] [stdout] 33: 0x61d6d23e2131 - std::rt::lang_start::h5d51bffdfd88737a [INFO] [stdout] 34: 0x61d6d23e2715 - main [INFO] [stdout] 35: 0x70570fb461ca - [INFO] [stdout] 36: 0x70570fb4628b - __libc_start_main [INFO] [stdout] 37: 0x61d6d23e2045 - _start [INFO] [stdout] 38: 0x0 - [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] failures: [INFO] [stdout] src/lib.rs - print_image (line 153) [INFO] [stdout] [INFO] [stdout] test result: FAILED. 0 passed; 1 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.25s [INFO] [stdout] [INFO] [stderr] error: doctest failed, to rerun pass `--doc` [INFO] running `Command { std: "docker" "inspect" "ab008bb1d874162fea2588a3f2bb23d9b818de0b02bf3a48ee45d15b2175ea85", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "ab008bb1d874162fea2588a3f2bb23d9b818de0b02bf3a48ee45d15b2175ea85", kill_on_drop: false }` [INFO] [stdout] ab008bb1d874162fea2588a3f2bb23d9b818de0b02bf3a48ee45d15b2175ea85