[INFO] fetching crate mgrad 0.1.5...
[INFO] testing mgrad-0.1.5 against beta-2025-09-21 for beta-1.91-3
[INFO] extracting crate mgrad 0.1.5 into /workspace/builds/worker-0-tc2/source
[INFO] started tweaking crates.io crate mgrad 0.1.5
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate mgrad 0.1.5
[INFO] tweaked toml for crates.io crate mgrad 0.1.5 written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate mgrad 0.1.5 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 mgrad 0.1.5 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-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] c4784021fe56a492590ce00fbc1f0d42a6196812aa9896fabc560fecbdd7f872
[INFO] running `Command { std: "docker" "start" "-a" "c4784021fe56a492590ce00fbc1f0d42a6196812aa9896fabc560fecbdd7f872", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c4784021fe56a492590ce00fbc1f0d42a6196812aa9896fabc560fecbdd7f872", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c4784021fe56a492590ce00fbc1f0d42a6196812aa9896fabc560fecbdd7f872", kill_on_drop: false }`
[INFO] [stdout] c4784021fe56a492590ce00fbc1f0d42a6196812aa9896fabc560fecbdd7f872
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] 7bf68d7059e3916f125e297615934e606622c2b17bb2b63ba86390ae06b48044
[INFO] running `Command { std: "docker" "start" "-a" "7bf68d7059e3916f125e297615934e606622c2b17bb2b63ba86390ae06b48044", kill_on_drop: false }`
[INFO] [stderr]    Compiling mgrad v0.1.5 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.82s
[INFO] running `Command { std: "docker" "inspect" "7bf68d7059e3916f125e297615934e606622c2b17bb2b63ba86390ae06b48044", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7bf68d7059e3916f125e297615934e606622c2b17bb2b63ba86390ae06b48044", kill_on_drop: false }`
[INFO] [stdout] 7bf68d7059e3916f125e297615934e606622c2b17bb2b63ba86390ae06b48044
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] 55950f231f4ac6655317ba2faf3832596bbf9584b7d54e22e99c458e2453bb50
[INFO] running `Command { std: "docker" "start" "-a" "55950f231f4ac6655317ba2faf3832596bbf9584b7d54e22e99c458e2453bb50", kill_on_drop: false }`
[INFO] [stderr]    Compiling libm v0.2.13
[INFO] [stderr]    Compiling libc v0.2.172
[INFO] [stderr]    Compiling arrayvec v0.7.6
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]    Compiling built v0.7.7
[INFO] [stderr]    Compiling aligned-vec v0.5.0
[INFO] [stderr]    Compiling nom v7.1.3
[INFO] [stderr]    Compiling itertools v0.12.1
[INFO] [stderr]    Compiling imgref v1.11.0
[INFO] [stderr]    Compiling new_debug_unreachable v1.0.6
[INFO] [stderr]    Compiling syn v2.0.101
[INFO] [stderr]    Compiling simd_helpers v0.1.0
[INFO] [stderr]    Compiling weezl v0.1.8
[INFO] [stderr]    Compiling noop_proc_macro v0.3.0
[INFO] [stderr]    Compiling bitstream-io v2.6.0
[INFO] [stderr]    Compiling maybe-rayon v0.1.1
[INFO] [stderr]    Compiling zune-inflate v0.2.54
[INFO] [stderr]    Compiling half v2.6.0
[INFO] [stderr]    Compiling color_quant v1.1.0
[INFO] [stderr]    Compiling bit_field v0.10.2
[INFO] [stderr]    Compiling zune-core v0.4.12
[INFO] [stderr]    Compiling loop9 v0.1.5
[INFO] [stderr]    Compiling rav1e v0.7.1
[INFO] [stderr]    Compiling lebe v0.5.2
[INFO] [stderr]    Compiling jpeg-decoder v0.3.1
[INFO] [stderr]    Compiling avif-serialize v0.8.3
[INFO] [stderr]    Compiling smallvec v1.15.0
[INFO] [stderr]    Compiling rgb v0.8.50
[INFO] [stderr]    Compiling image-webp v0.2.1
[INFO] [stderr]    Compiling qoi v0.4.1
[INFO] [stderr]    Compiling zune-jpeg v0.4.14
[INFO] [stderr]    Compiling gif v0.13.1
[INFO] [stderr]    Compiling exr v1.73.0
[INFO] [stderr]    Compiling tiff v0.9.1
[INFO] [stderr]    Compiling getrandom v0.3.2
[INFO] [stderr]    Compiling rand_core v0.9.3
[INFO] [stderr]    Compiling rand_chacha v0.9.0
[INFO] [stderr]    Compiling rand v0.9.1
[INFO] [stderr]    Compiling num-integer v0.1.46
[INFO] [stderr]    Compiling v_frame v0.3.8
[INFO] [stderr]    Compiling rand_distr v0.5.1
[INFO] [stderr]    Compiling num-bigint v0.4.6
[INFO] [stderr]    Compiling num-rational v0.4.2
[INFO] [stderr]    Compiling av1-grain v0.2.3
[INFO] [stderr]    Compiling profiling-procmacros v1.0.16
[INFO] [stderr]    Compiling thiserror-impl v1.0.69
[INFO] [stderr]    Compiling num-derive v0.4.2
[INFO] [stderr]    Compiling arg_enum_proc_macro v0.3.4
[INFO] [stderr]    Compiling profiling v1.0.16
[INFO] [stderr]    Compiling thiserror v1.0.69
[INFO] [stderr]    Compiling ravif v0.11.12
[INFO] [stderr]    Compiling image v0.25.6
[INFO] [stderr]    Compiling mgrad v0.1.5 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 31.35s
[INFO] running `Command { std: "docker" "inspect" "55950f231f4ac6655317ba2faf3832596bbf9584b7d54e22e99c458e2453bb50", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "55950f231f4ac6655317ba2faf3832596bbf9584b7d54e22e99c458e2453bb50", kill_on_drop: false }`
[INFO] [stdout] 55950f231f4ac6655317ba2faf3832596bbf9584b7d54e22e99c458e2453bb50
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] e120a248ea329a7b76231b5066c953c4579b7567b30e801a3af8d215f995c22d
[INFO] running `Command { std: "docker" "start" "-a" "e120a248ea329a7b76231b5066c953c4579b7567b30e801a3af8d215f995c22d", kill_on_drop: false }`
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.12s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/mgrad-39fede1242553677)
[INFO] [stdout] 
[INFO] [stdout] running 9 tests
[INFO] [stdout] test mgrad::test::test_complex1 ... ok
[INFO] [stdout] test mgrad::test::test_complex2 ... ok
[INFO] [stdout] test mgrad::test::test_constant ... ok
[INFO] [stdout] test mgrad::test::test_graph ... ok
[INFO] [stdout] test mgrad::test::test_linear_layer ... ok
[INFO] [stdout] test mgrad::test::test_simple ... ok
[INFO] [stdout] test mgrad::test::test_variable ... ok
[INFO] [stdout] test mgrad::test::test_const ... ok
[INFO] [stdout] test mgrad::test::test_linear_reg ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 9 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests mgrad
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test src/mgrad.rs - mgrad::nn::variable (line 1086) ... ok
[INFO] [stdout] test src/mgrad.rs - mgrad::Linear (line 772) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "e120a248ea329a7b76231b5066c953c4579b7567b30e801a3af8d215f995c22d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e120a248ea329a7b76231b5066c953c4579b7567b30e801a3af8d215f995c22d", kill_on_drop: false }`
[INFO] [stdout] e120a248ea329a7b76231b5066c953c4579b7567b30e801a3af8d215f995c22d