[INFO] cloning repository https://github.com/karthik2804/spin-image-classification-demo
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/karthik2804/spin-image-classification-demo" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkarthik2804%2Fspin-image-classification-demo", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkarthik2804%2Fspin-image-classification-demo'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 4917406b133522bddf9ce2b04b57fcf3a75d03e6
[INFO] checking karthik2804/spin-image-classification-demo against master#2b112efcccf831c0e0fbaa6470047c7067f12801 for pr-150727-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkarthik2804%2Fspin-image-classification-demo" "/workspace/builds/worker-7-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/karthik2804/spin-image-classification-demo
[INFO] finished tweaking git repo https://github.com/karthik2804/spin-image-classification-demo
[INFO] tweaked toml for git repo https://github.com/karthik2804/spin-image-classification-demo written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/karthik2804/spin-image-classification-demo on toolchain 2b112efcccf831c0e0fbaa6470047c7067f12801
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+2b112efcccf831c0e0fbaa6470047c7067f12801" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/karthik2804/spin-image-classification-demo 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" "+2b112efcccf831c0e0fbaa6470047c7067f12801" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded scan_fmt v0.2.6
[INFO] [stderr]   Downloaded string-interner v0.15.0
[INFO] [stderr]   Downloaded postgres_range v0.11.1
[INFO] [stderr]   Downloaded wit-bindgen-rt v0.24.0
[INFO] [stderr]   Downloaded postgres-protocol v0.6.9
[INFO] [stderr]   Downloaded postgres-types v0.2.11
[INFO] [stderr]   Downloaded spin-macro v5.1.1
[INFO] [stderr]   Downloaded tract v0.21.13
[INFO] [stderr]   Downloaded tracing v0.1.42
[INFO] [stderr]   Downloaded tract-tflite v0.21.13
[INFO] [stderr]   Downloaded wasi v0.13.1+wasi-0.2.0
[INFO] [stderr]   Downloaded wit-parser v0.235.0
[INFO] [stderr]   Downloaded spin-sdk v5.1.1
[INFO] [stderr]   Downloaded reqwest v0.12.24
[INFO] [stderr]   Downloaded clap v3.1.18
[INFO] [stderr]   Downloaded wit-component v0.235.0
[INFO] [stderr]   Downloaded tract-linalg v0.21.13
[INFO] [stderr]   Downloaded rustls v0.20.9
[INFO] [stderr]   Downloaded tract-metal v0.21.13
[INFO] [stderr]   Downloaded ndarray v0.16.1
[INFO] [stderr]   Downloaded tract-core v0.21.13
[INFO] [stderr]   Downloaded tower-http v0.6.7
[INFO] [stderr]   Downloaded zip v2.4.2
[INFO] [stderr]   Downloaded libm v0.2.11
[INFO] [stderr]   Downloaded tract-onnx v0.21.13
[INFO] [stderr]   Downloaded liquid-core v0.26.8
[INFO] [stderr]   Downloaded matrixmultiply v0.3.10
[INFO] [stderr]   Downloaded wit-bindgen-rt v0.43.0
[INFO] [stderr]   Downloaded wit-bindgen-rust v0.43.0
[INFO] [stderr]   Downloaded textwrap v0.15.2
[INFO] [stderr]   Downloaded webpki v0.22.4
[INFO] [stderr]   Downloaded zopfli v0.8.3
[INFO] [stderr]   Downloaded ndarray-npy v0.9.1
[INFO] [stderr]   Downloaded tract-hir v0.21.13
[INFO] [stderr]   Downloaded pest_derive v2.8.4
[INFO] [stderr]   Downloaded wit-bindgen v0.43.0
[INFO] [stderr]   Downloaded colorous v1.0.16
[INFO] [stderr]   Downloaded tract-gpu v0.21.13
[INFO] [stderr]   Downloaded prost v0.11.9
[INFO] [stderr]   Downloaded prost-types v0.11.9
[INFO] [stderr]   Downloaded liquid-lib v0.26.8
[INFO] [stderr]   Downloaded pest_meta v2.8.4
[INFO] [stderr]   Downloaded tract-data v0.21.13
[INFO] [stderr]   Downloaded smartstring v1.0.1
[INFO] [stderr]   Downloaded routefinder v0.5.4
[INFO] [stderr]   Downloaded wit-bindgen-core v0.43.0
[INFO] [stderr]   Downloaded wasm-metadata v0.235.0
[INFO] [stderr]   Downloaded fs-err v2.11.0
[INFO] [stderr]   Downloaded py_literal v0.4.0
[INFO] [stderr]   Downloaded tract-onnx-opl v0.21.13
[INFO] [stderr]   Downloaded tract-transformers v0.21.13
[INFO] [stderr]   Downloaded anymap2 v0.13.0
[INFO] [stderr]   Downloaded kstring v2.0.2
[INFO] [stderr]   Downloaded pest_generator v2.8.4
[INFO] [stderr]   Downloaded liquid-derive v0.26.8
[INFO] [stderr]   Downloaded tract-extra v0.21.13
[INFO] [stderr]   Downloaded tract-libcli v0.21.13
[INFO] [stderr]   Downloaded flatbuffers v23.5.26
[INFO] [stderr]   Downloaded prost-derive v0.11.9
[INFO] [stderr]   Downloaded derive-new v0.5.9
[INFO] [stderr]   Downloaded doc-comment v0.3.4
[INFO] [stderr]   Downloaded dyn-hash v0.2.2
[INFO] [stderr]   Downloaded tract-pulse-opl v0.21.13
[INFO] [stderr]   Downloaded tract-pulse v0.21.13
[INFO] [stderr]   Downloaded smartcow v0.2.1
[INFO] [stderr]   Downloaded spin-executor v5.1.1
[INFO] [stderr]   Downloaded wit-bindgen-rust-macro v0.43.0
[INFO] [stderr]   Downloaded readings-probe v0.1.8
[INFO] [stderr]   Downloaded box_drawing v0.1.2
[INFO] [stderr]   Downloaded liquid v0.26.8
[INFO] [stderr]   Downloaded tract-nnef v0.21.13
[INFO] [stderr]   Downloaded tract-tensorflow v0.21.13
[INFO] [stderr]   Downloaded metal v0.30.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:98afbf2d16093dec2546ff8915fddc74e65664aa03fc460b3712b1c2c54a33e4" "/opt/rustwide/cargo-home/bin/cargo" "+2b112efcccf831c0e0fbaa6470047c7067f12801" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 388d71e5f36ce3f239c64abcae3f7bde403ba3a3f9e7b06988b34d8bdf78ae58
[INFO] running `Command { std: "docker" "start" "-a" "388d71e5f36ce3f239c64abcae3f7bde403ba3a3f9e7b06988b34d8bdf78ae58", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "388d71e5f36ce3f239c64abcae3f7bde403ba3a3f9e7b06988b34d8bdf78ae58", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "388d71e5f36ce3f239c64abcae3f7bde403ba3a3f9e7b06988b34d8bdf78ae58", kill_on_drop: false }`
[INFO] [stdout] 388d71e5f36ce3f239c64abcae3f7bde403ba3a3f9e7b06988b34d8bdf78ae58
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:98afbf2d16093dec2546ff8915fddc74e65664aa03fc460b3712b1c2c54a33e4" "/opt/rustwide/cargo-home/bin/cargo" "+2b112efcccf831c0e0fbaa6470047c7067f12801" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f54115efeeb6ecf15b2060479ee4ff4d196306caa2e25992192a4b5232bb5c51
[INFO] running `Command { std: "docker" "start" "-a" "f54115efeeb6ecf15b2060479ee4ff4d196306caa2e25992192a4b5232bb5c51", kill_on_drop: false }`
[INFO] [stderr] warning: spin-image-classification-demo v0.1.0 (/opt/rustwide/workdir) ignoring invalid dependency `tract` which is missing a lib target
[INFO] [stderr]    Compiling serde_core v1.0.228
[INFO] [stderr]    Compiling libm v0.2.11
[INFO] [stderr]    Compiling memchr v2.7.6
[INFO] [stderr]    Compiling serde v1.0.228
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]    Compiling libc v0.2.177
[INFO] [stderr]    Compiling itoa v1.0.15
[INFO] [stderr]    Compiling zerocopy v0.8.30
[INFO] [stderr]    Compiling either v1.15.0
[INFO] [stderr]    Compiling ucd-trie v0.1.7
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling time-core v0.1.6
[INFO] [stderr]    Compiling time-macros v0.2.24
[INFO] [stderr]    Compiling deranged v0.5.5
[INFO] [stderr]    Compiling pest v2.8.4
[INFO] [stderr]    Compiling aho-corasick v1.1.4
[INFO] [stderr]    Compiling anyhow v1.0.100
[INFO] [stderr]    Compiling static_assertions v1.1.0
[INFO] [stderr]    Compiling time v0.3.44
[INFO] [stderr]     Checking num-integer v0.1.46
[INFO] [stderr]    Compiling pest_meta v2.8.4
[INFO] [stderr]    Compiling regex-automata v0.4.13
[INFO] [stderr]    Compiling itertools v0.13.0
[INFO] [stderr]    Compiling liquid-derive v0.26.8
[INFO] [stderr]    Compiling pest_generator v2.8.4
[INFO] [stderr]    Compiling kstring v2.0.2
[INFO] [stderr]    Compiling generic-array v0.14.7
[INFO] [stderr]    Compiling ahash v0.8.12
[INFO] [stderr]    Compiling doc-comment v0.3.4
[INFO] [stderr]    Compiling anymap2 v0.13.0
[INFO] [stderr]    Compiling matrixmultiply v0.3.10
[INFO] [stderr]    Compiling hashbrown v0.16.1
[INFO] [stderr]    Compiling foldhash v0.1.5
[INFO] [stderr]    Compiling wasmparser v0.235.0
[INFO] [stderr]    Compiling percent-encoding v2.3.2
[INFO] [stderr]    Compiling unicode-segmentation v1.12.0
[INFO] [stderr]    Compiling tinyvec v1.10.0
[INFO] [stderr]    Compiling pest_derive v2.8.4
[INFO] [stderr]    Compiling regex v1.12.2
[INFO] [stderr]    Compiling indexmap v2.12.1
[INFO] [stderr]    Compiling hashbrown v0.15.5
[INFO] [stderr]    Compiling liquid-core v0.26.8
[INFO] [stderr]     Checking num-complex v0.4.6
[INFO] [stderr]    Compiling same-file v1.0.6
[INFO] [stderr]     Checking rawpointer v0.2.1
[INFO] [stderr]    Compiling bitflags v2.10.0
[INFO] [stderr]    Compiling semver v1.0.27
[INFO] [stderr]    Compiling half v2.4.1
[INFO] [stderr]    Compiling cc v1.2.47
[INFO] [stderr]     Checking parking_lot_core v0.9.12
[INFO] [stderr]    Compiling walkdir v2.5.0
[INFO] [stderr]     Checking hashbrown v0.14.5
[INFO] [stderr]    Compiling unicode-normalization v0.1.25
[INFO] [stderr]    Compiling smallvec v1.15.1
[INFO] [stderr]    Compiling getrandom v0.3.4
[INFO] [stderr]     Checking nom v7.1.3
[INFO] [stderr]     Checking parking_lot v0.12.5
[INFO] [stderr]     Checking string-interner v0.15.0
[INFO] [stderr]     Checking ndarray v0.16.1
[INFO] [stderr]     Checking block-buffer v0.10.4
[INFO] [stderr]     Checking crypto-common v0.1.7
[INFO] [stderr]    Compiling liquid-lib v0.26.8
[INFO] [stderr]    Compiling ryu v1.0.20
[INFO] [stderr]    Compiling prettyplease v0.2.37
[INFO] [stderr]     Checking dyn-clone v1.0.20
[INFO] [stderr]    Compiling rustix v1.1.2
[INFO] [stderr]     Checking dyn-hash v0.2.2
[INFO] [stderr]     Checking scan_fmt v0.2.6
[INFO] [stderr]    Compiling wasm-encoder v0.235.0
[INFO] [stderr]     Checking maplit v1.0.2
[INFO] [stderr]     Checking strength_reduce v0.2.4
[INFO] [stderr]     Checking futures-channel v0.3.31
[INFO] [stderr]     Checking transpose v0.2.3
[INFO] [stderr]    Compiling serde_json v1.0.145
[INFO] [stderr]     Checking digest v0.10.7
[INFO] [stderr]    Compiling derive-new v0.5.9
[INFO] [stderr]     Checking primal-check v0.3.4
[INFO] [stderr]     Checking bit-vec v0.6.3
[INFO] [stderr]    Compiling id-arena v2.2.1
[INFO] [stderr]    Compiling unicode-xid v0.2.6
[INFO] [stderr]    Compiling leb128fmt v0.1.0
[INFO] [stderr]     Checking futures-util v0.3.31
[INFO] [stderr]     Checking bit-set v0.5.3
[INFO] [stderr]     Checking rustfft v6.4.1
[INFO] [stderr]    Compiling liquid v0.26.8
[INFO] [stderr]     Checking rand_core v0.9.3
[INFO] [stderr]     Checking ppv-lite86 v0.2.21
[INFO] [stderr]     Checking simd-adler32 v0.3.7
[INFO] [stderr]     Checking anymap3 v1.0.1
[INFO] [stderr]     Checking rand_chacha v0.9.0
[INFO] [stderr]     Checking miniz_oxide v0.8.9
[INFO] [stderr]     Checking filetime v0.2.26
[INFO] [stderr]     Checking tract-data v0.21.13
[INFO] [stderr]    Compiling smartstring v1.0.1
[INFO] [stderr]     Checking unicode-bidi v0.3.18
[INFO] [stderr]     Checking unicode-properties v0.1.4
[INFO] [stderr]     Checking xattr v1.6.1
[INFO] [stderr]    Compiling wit-bindgen-rt v0.24.0
[INFO] [stderr]    Compiling wit-bindgen-rust v0.43.0
[INFO] [stderr]     Checking tar v0.4.44
[INFO] [stderr]    Compiling tract-linalg v0.21.13
[INFO] [stderr]     Checking stringprep v0.1.5
[INFO] [stderr]     Checking sha2 v0.10.9
[INFO] [stderr]     Checking flate2 v1.1.5
[INFO] [stderr]     Checking rand v0.9.2
[INFO] [stderr]     Checking hmac v0.12.1
[INFO] [stderr]     Checking md-5 v0.10.6
[INFO] [stderr]    Compiling itertools v0.10.5
[INFO] [stderr]    Compiling wit-bindgen-rt v0.43.0
[INFO] [stderr]    Compiling wit-bindgen-rust-macro v0.43.0
[INFO] [stderr]     Checking fallible-iterator v0.2.0
[INFO] [stderr]     Checking futures-executor v0.3.31
[INFO] [stderr]     Checking futures v0.3.31
[INFO] [stderr]    Compiling rust_decimal v1.39.0
[INFO] [stderr]     Checking smartcow v0.2.1
[INFO] [stderr]     Checking postgres-protocol v0.6.9
[INFO] [stderr]     Checking wasi v0.13.1+wasi-0.2.0
[INFO] [stderr]     Checking pxfm v0.1.25
[INFO] [stderr]    Compiling spin-sdk v5.1.1
[INFO] [stderr]    Compiling prost-derive v0.11.9
[INFO] [stderr]    Compiling bytes v1.11.0
[INFO] [stderr]     Checking postgres-types v0.2.11
[INFO] [stderr]     Checking zune-core v0.5.0
[INFO] [stderr]     Checking spin-executor v5.1.1
[INFO] [stderr]     Checking zune-jpeg v0.5.5
[INFO] [stderr]    Compiling wit-parser v0.235.0
[INFO] [stderr]    Compiling spin-macro v5.1.1
[INFO] [stderr]     Checking postgres_range v0.11.1
[INFO] [stderr]     Checking tract-core v0.21.13
[INFO] [stderr]     Checking prost v0.11.9
[INFO] [stderr]     Checking chrono v0.4.42
[INFO] [stderr]     Checking prost-types v0.11.9
[INFO] [stderr]     Checking moxcms v0.7.9
[INFO] [stderr]     Checking routefinder v0.5.4
[INFO] [stderr]     Checking memmap2 v0.9.9
[INFO] [stderr]     Checking uuid v1.18.1
[INFO] [stderr]    Compiling wasm-metadata v0.235.0
[INFO] [stderr]     Checking bytemuck v1.24.0
[INFO] [stderr]    Compiling wit-component v0.235.0
[INFO] [stderr]    Compiling wit-bindgen-core v0.43.0
[INFO] [stderr]     Checking image v0.25.9
[INFO] [stderr]     Checking wit-bindgen v0.43.0
[INFO] [stderr]     Checking tract-nnef v0.21.13
[INFO] [stderr]     Checking tract-hir v0.21.13
[INFO] [stderr]     Checking tract-pulse-opl v0.21.13
[INFO] [stderr]     Checking tract-pulse v0.21.13
[INFO] [stderr]     Checking tract-tensorflow v0.21.13
[INFO] [stderr]     Checking spin-image-classification-demo v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/lib.rs:59:16
[INFO] [stdout]    |
[INFO] [stdout] 59 |     ModelError(String),
[INFO] [stdout]    |     ---------- ^^^^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     field in this variant
[INFO] [stdout]    |
[INFO] [stdout]    = note: `ClassificationError` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]    |
[INFO] [stdout] 59 -     ModelError(String),
[INFO] [stdout] 59 +     ModelError(()),
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/lib.rs:60:16
[INFO] [stdout]    |
[INFO] [stdout] 60 |     ImageError(String),
[INFO] [stdout]    |     ---------- ^^^^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     field in this variant
[INFO] [stdout]    |
[INFO] [stdout]    = note: `ClassificationError` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]    |
[INFO] [stdout] 60 -     ImageError(String),
[INFO] [stdout] 60 +     ImageError(()),
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `IoError` and `Unknown` are never constructed
[INFO] [stdout]   --> src/lib.rs:61:5
[INFO] [stdout]    |
[INFO] [stdout] 58 | enum ClassificationError {
[INFO] [stdout]    |      ------------------- variants in this enum
[INFO] [stdout] ...
[INFO] [stdout] 61 |     IoError(String),
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] 62 |     Unknown(String),
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `ClassificationError` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/lib.rs:59:16
[INFO] [stdout]    |
[INFO] [stdout] 59 |     ModelError(String),
[INFO] [stdout]    |     ---------- ^^^^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     field in this variant
[INFO] [stdout]    |
[INFO] [stdout]    = note: `ClassificationError` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]    |
[INFO] [stdout] 59 -     ModelError(String),
[INFO] [stdout] 59 +     ModelError(()),
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/lib.rs:60:16
[INFO] [stdout]    |
[INFO] [stdout] 60 |     ImageError(String),
[INFO] [stdout]    |     ---------- ^^^^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     field in this variant
[INFO] [stdout]    |
[INFO] [stdout]    = note: `ClassificationError` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]    |
[INFO] [stdout] 60 -     ImageError(String),
[INFO] [stdout] 60 +     ImageError(()),
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `IoError` and `Unknown` are never constructed
[INFO] [stdout]   --> src/lib.rs:61:5
[INFO] [stdout]    |
[INFO] [stdout] 58 | enum ClassificationError {
[INFO] [stdout]    |      ------------------- variants in this enum
[INFO] [stdout] ...
[INFO] [stdout] 61 |     IoError(String),
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] 62 |     Unknown(String),
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `ClassificationError` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2m 37s
[INFO] running `Command { std: "docker" "inspect" "f54115efeeb6ecf15b2060479ee4ff4d196306caa2e25992192a4b5232bb5c51", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f54115efeeb6ecf15b2060479ee4ff4d196306caa2e25992192a4b5232bb5c51", kill_on_drop: false }`
[INFO] [stdout] f54115efeeb6ecf15b2060479ee4ff4d196306caa2e25992192a4b5232bb5c51