[INFO] cloning repository https://github.com/jeff-pow/neural-net
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/jeff-pow/neural-net" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjeff-pow%2Fneural-net", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjeff-pow%2Fneural-net'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 48ce6e5b57e373a217589c689c06b82db1469f60
[INFO] checking jeff-pow/neural-net against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjeff-pow%2Fneural-net" "/workspace/builds/worker-2-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/jeff-pow/neural-net 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/jeff-pow/neural-net
[INFO] finished tweaking git repo https://github.com/jeff-pow/neural-net
[INFO] tweaked toml for git repo https://github.com/jeff-pow/neural-net written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/jeff-pow/neural-net 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]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded mnist v0.6.0
[INFO] [stderr]   Downloaded num-complex v0.4.4
[INFO] [stderr]   Downloaded curl v0.4.44
[INFO] [stderr]   Downloaded ndarray v0.15.6
[INFO] [stderr]   Downloaded curl-sys v0.4.71+curl-8.6.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] 35769c33d2c61488268db959bb3305694c85c184a08f6753d3f9a3748709231d
[INFO] running `Command { std: "docker" "start" "-a" "35769c33d2c61488268db959bb3305694c85c184a08f6753d3f9a3748709231d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "35769c33d2c61488268db959bb3305694c85c184a08f6753d3f9a3748709231d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "35769c33d2c61488268db959bb3305694c85c184a08f6753d3f9a3748709231d", kill_on_drop: false }`
[INFO] [stdout] 35769c33d2c61488268db959bb3305694c85c184a08f6753d3f9a3748709231d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] c27d4d49181a386db556d40c692a1bfed7a53363d71ca49c683abbd1a69cb827
[INFO] running `Command { std: "docker" "start" "-a" "c27d4d49181a386db556d40c692a1bfed7a53363d71ca49c683abbd1a69cb827", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.153
[INFO] [stderr]    Compiling pkg-config v0.3.29
[INFO] [stderr]    Compiling crossbeam-utils v0.8.19
[INFO] [stderr]    Compiling crc32fast v1.3.2
[INFO] [stderr]    Compiling num-traits v0.2.17
[INFO] [stderr]    Compiling matrixmultiply v0.3.8
[INFO] [stderr]    Compiling num-integer v0.1.45
[INFO] [stderr]    Compiling curl v0.4.44
[INFO] [stderr]     Checking socket2 v0.4.10
[INFO] [stderr]     Checking flate2 v1.0.28
[INFO] [stderr]     Checking itertools v0.12.1
[INFO] [stderr]     Checking crossbeam-channel v0.5.11
[INFO] [stderr]    Compiling cc v1.0.83
[INFO] [stderr]     Checking pbr v1.1.1
[INFO] [stderr]     Checking num-complex v0.4.4
[INFO] [stderr]     Checking ndarray v0.15.6
[INFO] [stderr]    Compiling openssl-sys v0.9.99
[INFO] [stderr]    Compiling libz-sys v1.1.15
[INFO] [stderr]    Compiling curl-sys v0.4.71+curl-8.6.0
[INFO] [stderr]     Checking mnist v0.6.0
[INFO] [stderr]     Checking dnn v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variants `Relu` and `Identity` are never constructed
[INFO] [stdout]  --> src/activations.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub enum Activation {
[INFO] [stdout]   |          ---------- variants in this enum
[INFO] [stdout] 3 |     Sigmoid,
[INFO] [stdout] 4 |     Relu,
[INFO] [stdout]   |     ^^^^
[INFO] [stdout] 5 |     Identity,
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `Activation` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `Relu` and `Identity` are never constructed
[INFO] [stdout]  --> src/activations.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub enum Activation {
[INFO] [stdout]   |          ---------- variants in this enum
[INFO] [stdout] 3 |     Sigmoid,
[INFO] [stdout] 4 |     Relu,
[INFO] [stdout]   |     ^^^^
[INFO] [stdout] 5 |     Identity,
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `Activation` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 12.07s
[INFO] running `Command { std: "docker" "inspect" "c27d4d49181a386db556d40c692a1bfed7a53363d71ca49c683abbd1a69cb827", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c27d4d49181a386db556d40c692a1bfed7a53363d71ca49c683abbd1a69cb827", kill_on_drop: false }`
[INFO] [stdout] c27d4d49181a386db556d40c692a1bfed7a53363d71ca49c683abbd1a69cb827