[INFO] cloning repository https://github.com/Jgansaown/digit-recognizer
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Jgansaown/digit-recognizer" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJgansaown%2Fdigit-recognizer", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJgansaown%2Fdigit-recognizer'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] ceac43103b6e7c1dc6681a67936e4fa8860c1b87
[INFO] checking Jgansaown/digit-recognizer against master#385fa9d845dd326c6bbfd58c22244215e431948a for never-type-fallback-to-never
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJgansaown%2Fdigit-recognizer" "/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/Jgansaown/digit-recognizer on toolchain 385fa9d845dd326c6bbfd58c22244215e431948a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Jgansaown/digit-recognizer
[INFO] finished tweaking git repo https://github.com/Jgansaown/digit-recognizer
[INFO] tweaked toml for git repo https://github.com/Jgansaown/digit-recognizer written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/Jgansaown/digit-recognizer 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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded wasm-bindgen-test-macro v0.3.38
[INFO] [stderr]   Downloaded wasm-bindgen-test v0.3.38
[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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] cdb6bec212ff3538d350d43de62df87aba43ecb3748928df215163109094290b
[INFO] running `Command { std: "docker" "start" "-a" "cdb6bec212ff3538d350d43de62df87aba43ecb3748928df215163109094290b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "cdb6bec212ff3538d350d43de62df87aba43ecb3748928df215163109094290b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cdb6bec212ff3538d350d43de62df87aba43ecb3748928df215163109094290b", kill_on_drop: false }`
[INFO] [stdout] cdb6bec212ff3538d350d43de62df87aba43ecb3748928df215163109094290b
[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" "-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f5dc7eb09c0d681c5c3725f7af1e37599a2569c8b53af331362557c29684a1cb
[INFO] running `Command { std: "docker" "start" "-a" "f5dc7eb09c0d681c5c3725f7af1e37599a2569c8b53af331362557c29684a1cb", kill_on_drop: false }`
[INFO] [stderr]    Compiling wasm-bindgen-shared v0.2.88
[INFO] [stderr]    Compiling libm v0.2.7
[INFO] [stderr]    Compiling num-traits v0.2.16
[INFO] [stderr]    Compiling bumpalo v3.13.0
[INFO] [stderr]    Compiling once_cell v1.18.0
[INFO] [stderr]    Compiling wasm-bindgen v0.2.88
[INFO] [stderr]    Compiling matrixmultiply v0.3.7
[INFO] [stderr]     Checking either v1.9.0
[INFO] [stderr]     Checking scoped-tls v1.0.1
[INFO] [stderr]    Compiling quote v1.0.33
[INFO] [stderr]     Checking miniz_oxide v0.7.1
[INFO] [stderr]     Checking getrandom v0.2.10
[INFO] [stderr]     Checking itertools v0.10.5
[INFO] [stderr]    Compiling syn v2.0.29
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking flate2 v1.0.28
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking num-complex v0.4.3
[INFO] [stderr]     Checking num-integer v0.1.45
[INFO] [stderr]     Checking rand_distr v0.4.3
[INFO] [stderr]     Checking noisy_float v0.2.0
[INFO] [stderr]     Checking ndarray v0.15.6
[INFO] [stderr]    Compiling wasm-bindgen-backend v0.2.88
[INFO] [stderr]    Compiling wasm-bindgen-test-macro v0.3.38
[INFO] [stderr]    Compiling wasm-bindgen-macro-support v0.2.88
[INFO] [stderr]    Compiling wasm-bindgen-macro v0.2.88
[INFO] [stderr]     Checking ndarray-rand v0.14.0
[INFO] [stderr]     Checking ndarray-stats v0.5.1
[INFO] [stderr]     Checking js-sys v0.3.65
[INFO] [stderr]     Checking console_error_panic_hook v0.1.7
[INFO] [stderr]     Checking mnist v0.1.0 (/opt/rustwide/workdir/wasm)
[INFO] [stderr]     Checking wasm-bindgen-futures v0.4.38
[INFO] [stderr]     Checking wasm-bindgen-test v0.3.38
[INFO] [stdout] warning: function `print_image` is never used
[INFO] [stdout]   --> wasm/examples/test-models.rs:32:4
[INFO] [stdout]    |
[INFO] [stdout] 32 | fn print_image(data: ArrayView1<f64>) {
[INFO] [stdout]    |    ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `test_kmeans` is never used
[INFO] [stdout]   --> wasm/examples/test-models.rs:46:4
[INFO] [stdout]    |
[INFO] [stdout] 46 | fn test_kmeans(training: &Dataset, testing: &Dataset, max_iteration: usize) {
[INFO] [stdout]    |    ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `test_knn` is never used
[INFO] [stdout]   --> wasm/examples/test-models.rs:51:4
[INFO] [stdout]    |
[INFO] [stdout] 51 | fn test_knn(training: &Dataset, testing: &Dataset, max_iteration: usize) {
[INFO] [stdout]    |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 13.91s
[INFO] running `Command { std: "docker" "inspect" "f5dc7eb09c0d681c5c3725f7af1e37599a2569c8b53af331362557c29684a1cb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f5dc7eb09c0d681c5c3725f7af1e37599a2569c8b53af331362557c29684a1cb", kill_on_drop: false }`
[INFO] [stdout] f5dc7eb09c0d681c5c3725f7af1e37599a2569c8b53af331362557c29684a1cb
[INFO] checking Jgansaown/digit-recognizer against try#2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2 for never-type-fallback-to-never
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJgansaown%2Fdigit-recognizer" "/workspace/builds/worker-5-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Jgansaown/digit-recognizer on toolchain 2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Jgansaown/digit-recognizer
[INFO] finished tweaking git repo https://github.com/Jgansaown/digit-recognizer
[INFO] tweaked toml for git repo https://github.com/Jgansaown/digit-recognizer written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/Jgansaown/digit-recognizer 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" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 7ce1fc469f5c514fc10c85400a981c9d39318b88a73040cdba6974fa57565925
[INFO] running `Command { std: "docker" "start" "-a" "7ce1fc469f5c514fc10c85400a981c9d39318b88a73040cdba6974fa57565925", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7ce1fc469f5c514fc10c85400a981c9d39318b88a73040cdba6974fa57565925", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7ce1fc469f5c514fc10c85400a981c9d39318b88a73040cdba6974fa57565925", kill_on_drop: false }`
[INFO] [stdout] 7ce1fc469f5c514fc10c85400a981c9d39318b88a73040cdba6974fa57565925
[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" "-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e9a8acdf66a09cb09be0e3fb2b38164b65ce582e523e67e1919b0d6016d44b54
[INFO] running `Command { std: "docker" "start" "-a" "e9a8acdf66a09cb09be0e3fb2b38164b65ce582e523e67e1919b0d6016d44b54", kill_on_drop: false }`
[INFO] [stderr]    Compiling wasm-bindgen-shared v0.2.88
[INFO] [stderr]    Compiling libm v0.2.7
[INFO] [stderr]    Compiling num-traits v0.2.16
[INFO] [stderr]    Compiling bumpalo v3.13.0
[INFO] [stderr]    Compiling once_cell v1.18.0
[INFO] [stderr]    Compiling wasm-bindgen v0.2.88
[INFO] [stderr]    Compiling matrixmultiply v0.3.7
[INFO] [stderr]     Checking either v1.9.0
[INFO] [stderr]     Checking scoped-tls v1.0.1
[INFO] [stderr]     Checking miniz_oxide v0.7.1
[INFO] [stderr]    Compiling quote v1.0.33
[INFO] [stderr]     Checking getrandom v0.2.10
[INFO] [stderr]     Checking itertools v0.10.5
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]    Compiling syn v2.0.29
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking flate2 v1.0.28
[INFO] [stderr]     Checking num-complex v0.4.3
[INFO] [stderr]     Checking num-integer v0.1.45
[INFO] [stderr]     Checking rand_distr v0.4.3
[INFO] [stderr]     Checking noisy_float v0.2.0
[INFO] [stderr]     Checking ndarray v0.15.6
[INFO] [stderr]    Compiling wasm-bindgen-backend v0.2.88
[INFO] [stderr]    Compiling wasm-bindgen-test-macro v0.3.38
[INFO] [stderr]    Compiling wasm-bindgen-macro-support v0.2.88
[INFO] [stderr]     Checking ndarray-stats v0.5.1
[INFO] [stderr]     Checking ndarray-rand v0.14.0
[INFO] [stderr]    Compiling wasm-bindgen-macro v0.2.88
[INFO] [stderr]     Checking console_error_panic_hook v0.1.7
[INFO] [stderr]     Checking js-sys v0.3.65
[INFO] [stderr]     Checking mnist v0.1.0 (/opt/rustwide/workdir/wasm)
[INFO] [stderr]     Checking wasm-bindgen-futures v0.4.38
[INFO] [stderr]     Checking wasm-bindgen-test v0.3.38
[INFO] [stdout] warning: function `print_image` is never used
[INFO] [stdout]   --> wasm/examples/test-models.rs:32:4
[INFO] [stdout]    |
[INFO] [stdout] 32 | fn print_image(data: ArrayView1<f64>) {
[INFO] [stdout]    |    ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `test_kmeans` is never used
[INFO] [stdout]   --> wasm/examples/test-models.rs:46:4
[INFO] [stdout]    |
[INFO] [stdout] 46 | fn test_kmeans(training: &Dataset, testing: &Dataset, max_iteration: usize) {
[INFO] [stdout]    |    ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `test_knn` is never used
[INFO] [stdout]   --> wasm/examples/test-models.rs:51:4
[INFO] [stdout]    |
[INFO] [stdout] 51 | fn test_knn(training: &Dataset, testing: &Dataset, max_iteration: usize) {
[INFO] [stdout]    |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 15.43s
[INFO] running `Command { std: "docker" "inspect" "e9a8acdf66a09cb09be0e3fb2b38164b65ce582e523e67e1919b0d6016d44b54", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e9a8acdf66a09cb09be0e3fb2b38164b65ce582e523e67e1919b0d6016d44b54", kill_on_drop: false }`
[INFO] [stdout] e9a8acdf66a09cb09be0e3fb2b38164b65ce582e523e67e1919b0d6016d44b54