[INFO] fetching crate surface_ai 0.0.0...
[INFO] checking surface_ai-0.0.0 against master#22572d0994593197593e2a1b7b18d720a9a349a7 for pr-126452-1
[INFO] extracting crate surface_ai 0.0.0 into /workspace/builds/worker-4-tc1/source
[INFO] validating manifest of crates.io crate surface_ai 0.0.0 on toolchain 22572d0994593197593e2a1b7b18d720a9a349a7
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+22572d0994593197593e2a1b7b18d720a9a349a7" "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-4-tc1/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" "+22572d0994593197593e2a1b7b18d720a9a349a7" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+22572d0994593197593e2a1b7b18d720a9a349a7" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c22ae8878ab208539baa63989e551b9711077f486fd97ac84e92c213834ef74b
[INFO] running `Command { std: "docker" "start" "-a" "c22ae8878ab208539baa63989e551b9711077f486fd97ac84e92c213834ef74b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c22ae8878ab208539baa63989e551b9711077f486fd97ac84e92c213834ef74b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c22ae8878ab208539baa63989e551b9711077f486fd97ac84e92c213834ef74b", kill_on_drop: false }`
[INFO] [stdout] c22ae8878ab208539baa63989e551b9711077f486fd97ac84e92c213834ef74b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+22572d0994593197593e2a1b7b18d720a9a349a7" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d2c37002b76e2db6485e4d30167875f14e0fc0c1f852d50285bcc5baba827b8d
[INFO] running `Command { std: "docker" "start" "-a" "d2c37002b76e2db6485e4d30167875f14e0fc0c1f852d50285bcc5baba827b8d", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.87
[INFO] [stderr]    Compiling getrandom v0.2.2
[INFO] [stderr]     Checking ppv-lite86 v0.2.10
[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 1.80s
[INFO] running `Command { std: "docker" "inspect" "d2c37002b76e2db6485e4d30167875f14e0fc0c1f852d50285bcc5baba827b8d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d2c37002b76e2db6485e4d30167875f14e0fc0c1f852d50285bcc5baba827b8d", kill_on_drop: false }`
[INFO] [stdout] d2c37002b76e2db6485e4d30167875f14e0fc0c1f852d50285bcc5baba827b8d
[INFO] checking surface_ai-0.0.0 against try#6289438dbad80b1a0029c66dd3f6abf57c2c51be for pr-126452-1
[INFO] extracting crate surface_ai 0.0.0 into /workspace/builds/worker-4-tc2/source
[INFO] validating manifest of crates.io crate surface_ai 0.0.0 on toolchain 6289438dbad80b1a0029c66dd3f6abf57c2c51be
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+6289438dbad80b1a0029c66dd3f6abf57c2c51be" "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-4-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" "+6289438dbad80b1a0029c66dd3f6abf57c2c51be" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+6289438dbad80b1a0029c66dd3f6abf57c2c51be" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 86581b10c2d6576b78e5edc4e274fc31058643584e4536d453ad901a084954e7
[INFO] running `Command { std: "docker" "start" "-a" "86581b10c2d6576b78e5edc4e274fc31058643584e4536d453ad901a084954e7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "86581b10c2d6576b78e5edc4e274fc31058643584e4536d453ad901a084954e7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "86581b10c2d6576b78e5edc4e274fc31058643584e4536d453ad901a084954e7", kill_on_drop: false }`
[INFO] [stdout] 86581b10c2d6576b78e5edc4e274fc31058643584e4536d453ad901a084954e7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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" "-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+6289438dbad80b1a0029c66dd3f6abf57c2c51be" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3bd5bd023c2fad5e28a9c41e5b7fbba71ab10defdbaabe8081c756dac3c7ae2b
[INFO] running `Command { std: "docker" "start" "-a" "3bd5bd023c2fad5e28a9c41e5b7fbba71ab10defdbaabe8081c756dac3c7ae2b", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.87
[INFO] [stderr]    Compiling getrandom v0.2.2
[INFO] [stderr]     Checking ppv-lite86 v0.2.10
[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 2.32s
[INFO] running `Command { std: "docker" "inspect" "3bd5bd023c2fad5e28a9c41e5b7fbba71ab10defdbaabe8081c756dac3c7ae2b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3bd5bd023c2fad5e28a9c41e5b7fbba71ab10defdbaabe8081c756dac3c7ae2b", kill_on_drop: false }`
[INFO] [stdout] 3bd5bd023c2fad5e28a9c41e5b7fbba71ab10defdbaabe8081c756dac3c7ae2b