[INFO] fetching crate surface_ai 0.0.0...
[INFO] building surface_ai-0.0.0 against master#ad85bc524b1ad696e42061ad8338d382dffbdbe5 for pr-146237-1
[INFO] extracting crate surface_ai 0.0.0 into /workspace/builds/worker-1-tc1/source
[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-1-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate surface_ai 0.0.0 on toolchain ad85bc524b1ad696e42061ad8338d382dffbdbe5
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ad85bc524b1ad696e42061ad8338d382dffbdbe5" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[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" "+ad85bc524b1ad696e42061ad8338d382dffbdbe5" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded getrandom v0.2.2
[INFO] [stderr]   Downloaded rand_chacha v0.3.0
[INFO] [stderr]   Downloaded rand_hc v0.3.0
[INFO] [stderr]   Downloaded rand v0.8.3
[INFO] [stderr]   Downloaded libc v0.2.87
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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" "+ad85bc524b1ad696e42061ad8338d382dffbdbe5" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f8b95bdde4e74646ec76f3e6702d1302f1d75fde1b7713c9ff3eaa0b45ba9b2e
[INFO] running `Command { std: "docker" "start" "-a" "f8b95bdde4e74646ec76f3e6702d1302f1d75fde1b7713c9ff3eaa0b45ba9b2e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f8b95bdde4e74646ec76f3e6702d1302f1d75fde1b7713c9ff3eaa0b45ba9b2e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f8b95bdde4e74646ec76f3e6702d1302f1d75fde1b7713c9ff3eaa0b45ba9b2e", kill_on_drop: false }`
[INFO] [stdout] f8b95bdde4e74646ec76f3e6702d1302f1d75fde1b7713c9ff3eaa0b45ba9b2e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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" "-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+ad85bc524b1ad696e42061ad8338d382dffbdbe5" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 43d622b00525c75e1157985f25b59e9a23d3c14cfe7f3f1f4abbdcec4904876e
[INFO] running `Command { std: "docker" "start" "-a" "43d622b00525c75e1157985f25b59e9a23d3c14cfe7f3f1f4abbdcec4904876e", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.87
[INFO] [stderr]    Compiling getrandom v0.2.2
[INFO] [stderr]    Compiling ppv-lite86 v0.2.10
[INFO] [stderr]    Compiling rand_core v0.6.2
[INFO] [stderr]    Compiling rand_chacha v0.3.0
[INFO] [stderr]    Compiling rand v0.8.3
[INFO] [stderr]    Compiling surface_ai v0.0.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 3.12s
[INFO] running `Command { std: "docker" "inspect" "43d622b00525c75e1157985f25b59e9a23d3c14cfe7f3f1f4abbdcec4904876e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "43d622b00525c75e1157985f25b59e9a23d3c14cfe7f3f1f4abbdcec4904876e", kill_on_drop: false }`
[INFO] [stdout] 43d622b00525c75e1157985f25b59e9a23d3c14cfe7f3f1f4abbdcec4904876e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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" "-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+ad85bc524b1ad696e42061ad8338d382dffbdbe5" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c335fc36f24c2cd60fc7f93c19a6ae45ce286b8e0555fc5986e3b7078cdf16a3
[INFO] running `Command { std: "docker" "start" "-a" "c335fc36f24c2cd60fc7f93c19a6ae45ce286b8e0555fc5986e3b7078cdf16a3", kill_on_drop: false }`
[INFO] [stderr]    Compiling 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)]` (part of `#[warn(unused)]`) 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)]` (part of `#[warn(unused)]`) 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] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.89s
[INFO] running `Command { std: "docker" "inspect" "c335fc36f24c2cd60fc7f93c19a6ae45ce286b8e0555fc5986e3b7078cdf16a3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c335fc36f24c2cd60fc7f93c19a6ae45ce286b8e0555fc5986e3b7078cdf16a3", kill_on_drop: false }`
[INFO] [stdout] c335fc36f24c2cd60fc7f93c19a6ae45ce286b8e0555fc5986e3b7078cdf16a3