[INFO] cloning repository https://github.com/MagicPotatoBean/Digit-recognition
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/MagicPotatoBean/Digit-recognition" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMagicPotatoBean%2FDigit-recognition", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMagicPotatoBean%2FDigit-recognition'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] b65e2beade128e1b2f46e522dfdcfb4381d4490d
[INFO] building MagicPotatoBean/Digit-recognition against master#11663cd3bfefef7d34e8f0892c250bf698049392+rustflags=-Dtail-expr-drop-order for pr-134523
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMagicPotatoBean%2FDigit-recognition" "/workspace/builds/worker-5-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/MagicPotatoBean/Digit-recognition on toolchain 11663cd3bfefef7d34e8f0892c250bf698049392
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/MagicPotatoBean/Digit-recognition
[INFO] finished tweaking git repo https://github.com/MagicPotatoBean/Digit-recognition
[INFO] tweaked toml for git repo https://github.com/MagicPotatoBean/Digit-recognition written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/MagicPotatoBean/Digit-recognition 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" "+11663cd3bfefef7d34e8f0892c250bf698049392" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 24232e47fd39e76332c3d10b20286445bcf81a372c247affb5a80327444e409c
[INFO] running `Command { std: "docker" "start" "-a" "24232e47fd39e76332c3d10b20286445bcf81a372c247affb5a80327444e409c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "24232e47fd39e76332c3d10b20286445bcf81a372c247affb5a80327444e409c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "24232e47fd39e76332c3d10b20286445bcf81a372c247affb5a80327444e409c", kill_on_drop: false }`
[INFO] [stdout] 24232e47fd39e76332c3d10b20286445bcf81a372c247affb5a80327444e409c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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=forbid -Dtail-expr-drop-order" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c26d5e05cafc4cd3c6f1f3e9a0c05437dcf3b58f50ac1d5dc5c99f3dbdd04f6c
[INFO] running `Command { std: "docker" "start" "-a" "c26d5e05cafc4cd3c6f1f3e9a0c05437dcf3b58f50ac1d5dc5c99f3dbdd04f6c", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.169
[INFO] [stderr]    Compiling lock_api v0.4.12
[INFO] [stderr]    Compiling signal-hook v0.3.17
[INFO] [stderr]    Compiling rustix v0.38.42
[INFO] [stderr]    Compiling smallvec v1.13.2
[INFO] [stderr]    Compiling linux-raw-sys v0.4.14
[INFO] [stderr]    Compiling signal-hook-registry v1.4.2
[INFO] [stderr]    Compiling parking_lot_core v0.9.10
[INFO] [stderr]    Compiling mio v1.0.3
[INFO] [stderr]    Compiling parking_lot v0.12.3
[INFO] [stderr]    Compiling signal-hook-mio v0.2.4
[INFO] [stderr]    Compiling crossterm v0.28.1
[INFO] [stderr]    Compiling digit-recognition v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `image_index`
[INFO] [stdout]   --> src/data_loader.rs:63:9
[INFO] [stdout]    |
[INFO] [stdout] 63 |     for image_index in 0..dimension_sizes[0] {
[INFO] [stdout]    |         ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_image_index`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 4.68s
[INFO] running `Command { std: "docker" "inspect" "c26d5e05cafc4cd3c6f1f3e9a0c05437dcf3b58f50ac1d5dc5c99f3dbdd04f6c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c26d5e05cafc4cd3c6f1f3e9a0c05437dcf3b58f50ac1d5dc5c99f3dbdd04f6c", kill_on_drop: false }`
[INFO] [stdout] c26d5e05cafc4cd3c6f1f3e9a0c05437dcf3b58f50ac1d5dc5c99f3dbdd04f6c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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=forbid -Dtail-expr-drop-order" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4d82986404c9f72db647df6f0baa335876f8aba6dd267fd385d91f533c1bdb76
[INFO] running `Command { std: "docker" "start" "-a" "4d82986404c9f72db647df6f0baa335876f8aba6dd267fd385d91f533c1bdb76", kill_on_drop: false }`
[INFO] [stderr]    Compiling digit-recognition v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `image_index`
[INFO] [stdout]   --> src/data_loader.rs:63:9
[INFO] [stdout]    |
[INFO] [stdout] 63 |     for image_index in 0..dimension_sizes[0] {
[INFO] [stdout]    |         ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_image_index`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.41s
[INFO] running `Command { std: "docker" "inspect" "4d82986404c9f72db647df6f0baa335876f8aba6dd267fd385d91f533c1bdb76", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4d82986404c9f72db647df6f0baa335876f8aba6dd267fd385d91f533c1bdb76", kill_on_drop: false }`
[INFO] [stdout] 4d82986404c9f72db647df6f0baa335876f8aba6dd267fd385d91f533c1bdb76