[INFO] fetching crate surface_ai 0.0.0...
[INFO] checking surface_ai-0.0.0 against try#c387b04bf028733cd561d62128c8a5eee4bc1458+rustflags=-Dtail_expr_drop_order for pr-130930
[INFO] extracting crate surface_ai 0.0.0 into /workspace/builds/worker-5-tc2/source
[INFO] validating manifest of crates.io crate surface_ai 0.0.0 on toolchain c387b04bf028733cd561d62128c8a5eee4bc1458
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c387b04bf028733cd561d62128c8a5eee4bc1458" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate surface_ai 0.0.0
[INFO] finished tweaking crates.io crate surface_ai 0.0.0
[INFO] tweaked toml for crates.io crate surface_ai 0.0.0 written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] crate crates.io crate surface_ai 0.0.0 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" "+c387b04bf028733cd561d62128c8a5eee4bc1458" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:6252d7ea7fb8caaf7af6d800c5fb250a9cd862b9a7f9508afb3c54fa7fe1102e" "/opt/rustwide/cargo-home/bin/cargo" "+c387b04bf028733cd561d62128c8a5eee4bc1458" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 04fd3f25f6553cf031e15725fec5b719bd51411b833cdd5d1f5362c7911757a2
[INFO] running `Command { std: "docker" "start" "-a" "04fd3f25f6553cf031e15725fec5b719bd51411b833cdd5d1f5362c7911757a2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "04fd3f25f6553cf031e15725fec5b719bd51411b833cdd5d1f5362c7911757a2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "04fd3f25f6553cf031e15725fec5b719bd51411b833cdd5d1f5362c7911757a2", kill_on_drop: false }`
[INFO] [stdout] 04fd3f25f6553cf031e15725fec5b719bd51411b833cdd5d1f5362c7911757a2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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=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@sha256:6252d7ea7fb8caaf7af6d800c5fb250a9cd862b9a7f9508afb3c54fa7fe1102e" "/opt/rustwide/cargo-home/bin/cargo" "+c387b04bf028733cd561d62128c8a5eee4bc1458" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a61a78064e9bdb1c60afbba0592dfa758ea4f90fe49946cd90f6a9bf1da88507
[INFO] running `Command { std: "docker" "start" "-a" "a61a78064e9bdb1c60afbba0592dfa758ea4f90fe49946cd90f6a9bf1da88507", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.87
[INFO] [stderr]    Compiling getrandom v0.2.2
[INFO] [stderr]     Checking rand_core v0.6.2
[INFO] [stderr]     Checking rand_chacha v0.3.0
[INFO] [stderr]     Checking rand v0.8.3
[INFO] [stderr]     Checking surface_ai v0.0.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `cross_validation_testing`
[INFO] [stdout]  --> src/neural_net/tests.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 |     cross_validation_testing,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/neural_net/tests.rs:150:10
[INFO] [stdout]     |
[INFO] [stdout] 150 |     let (mut data, mut expect) = read_star_file();
[INFO] [stdout]     |          ----^^^^
[INFO] [stdout]     |          |
[INFO] [stdout]     |          help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/neural_net/tests.rs:150:20
[INFO] [stdout]     |
[INFO] [stdout] 150 |     let (mut data, mut expect) = read_star_file();
[INFO] [stdout]     |                    ----^^^^^^
[INFO] [stdout]     |                    |
[INFO] [stdout]     |                    help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.71s
[INFO] running `Command { std: "docker" "inspect" "a61a78064e9bdb1c60afbba0592dfa758ea4f90fe49946cd90f6a9bf1da88507", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a61a78064e9bdb1c60afbba0592dfa758ea4f90fe49946cd90f6a9bf1da88507", kill_on_drop: false }`
[INFO] [stdout] a61a78064e9bdb1c60afbba0592dfa758ea4f90fe49946cd90f6a9bf1da88507