[INFO] updating cached repository hgzimmerman/Perceptron
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/hgzimmerman/Perceptron
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/hgzimmerman/Perceptron" "work/ex/pr-60914/sources/master#39401465da4ce27aeeb2c2a26133ac35c63aa515/gh/hgzimmerman/Perceptron"`
[INFO] [stderr] Cloning into 'work/ex/pr-60914/sources/master#39401465da4ce27aeeb2c2a26133ac35c63aa515/gh/hgzimmerman/Perceptron'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/hgzimmerman/Perceptron" "work/ex/pr-60914/sources/try#f45cc3094ee337acd688771b9234318046b0572d/gh/hgzimmerman/Perceptron"`
[INFO] [stderr] Cloning into 'work/ex/pr-60914/sources/try#f45cc3094ee337acd688771b9234318046b0572d/gh/hgzimmerman/Perceptron'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] cabefb0dd7af800f2f7bcaacccae6a06aaf1dd14
[INFO] sha for GitHub repo hgzimmerman/Perceptron: cabefb0dd7af800f2f7bcaacccae6a06aaf1dd14
[INFO] validating manifest of hgzimmerman/Perceptron on toolchain master#39401465da4ce27aeeb2c2a26133ac35c63aa515
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+39401465da4ce27aeeb2c2a26133ac35c63aa515-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of hgzimmerman/Perceptron on toolchain try#f45cc3094ee337acd688771b9234318046b0572d
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+f45cc3094ee337acd688771b9234318046b0572d-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing hgzimmerman/Perceptron
[INFO] finished frobbing hgzimmerman/Perceptron
[INFO] frobbed toml for hgzimmerman/Perceptron written to work/ex/pr-60914/sources/master#39401465da4ce27aeeb2c2a26133ac35c63aa515/gh/hgzimmerman/Perceptron/Cargo.toml
[INFO] started frobbing hgzimmerman/Perceptron
[INFO] finished frobbing hgzimmerman/Perceptron
[INFO] frobbed toml for hgzimmerman/Perceptron written to work/ex/pr-60914/sources/try#f45cc3094ee337acd688771b9234318046b0572d/gh/hgzimmerman/Perceptron/Cargo.toml
[INFO] crate hgzimmerman/Perceptron already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+39401465da4ce27aeeb2c2a26133ac35c63aa515-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+f45cc3094ee337acd688771b9234318046b0572d-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking hgzimmerman/Perceptron against master#39401465da4ce27aeeb2c2a26133ac35c63aa515 for pr-60914
[INFO] running `"docker" "create" "-v" "/mnt/crater-raid/crater/work/local/target-dirs/pr-60914/worker-7/master#39401465da4ce27aeeb2c2a26133ac35c63aa515:/opt/crater/target:rw,Z" "-v" "/mnt/crater-raid/crater/work/ex/pr-60914/sources/master#39401465da4ce27aeeb2c2a26133ac35c63aa515/gh/hgzimmerman/Perceptron:/opt/crater/workdir:ro,Z" "-v" "/mnt/crater-raid/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/crater-raid/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+39401465da4ce27aeeb2c2a26133ac35c63aa515-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] b029fbe11ec8feb2abf8202d04e7c405508722663726a06bf97da5ef9d44c7f4
[INFO] running `"docker" "start" "-a" "b029fbe11ec8feb2abf8202d04e7c405508722663726a06bf97da5ef9d44c7f4"`
[INFO] [stderr]     Checking perceptron-test v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused import: `super::*`
[INFO] [stderr]    --> src/lib.rs:139:9
[INFO] [stderr]     |
[INFO] [stderr] 139 |     use super::*;
[INFO] [stderr]     |         ^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Boolean::*`
[INFO] [stderr]    --> src/lib.rs:165:9
[INFO] [stderr]     |
[INFO] [stderr] 165 |     use Boolean::*;
[INFO] [stderr]     |         ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `test::Bencher`
[INFO] [stderr]    --> src/lib.rs:252:13
[INFO] [stderr]     |
[INFO] [stderr] 252 |         use test::Bencher;
[INFO] [stderr]     |             ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `super::*`
[INFO] [stderr]    --> src/lib.rs:253:13
[INFO] [stderr]     |
[INFO] [stderr] 253 |         use super::*;
[INFO] [stderr]     |             ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `NeuralNetwork`
[INFO] [stderr]   --> src/lib.rs:23:1
[INFO] [stderr]    |
[INFO] [stderr] 23 | struct NeuralNetwork {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `add_output_connection`
[INFO] [stderr]    --> src/lib.rs:105:5
[INFO] [stderr]     |
[INFO] [stderr] 105 |     fn add_output_connection(&mut self, output_connection: Connection) {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `NeuralNetwork`
[INFO] [stderr]   --> src/lib.rs:23:1
[INFO] [stderr]    |
[INFO] [stderr] 23 | struct NeuralNetwork {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `add_output_connection`
[INFO] [stderr]    --> src/lib.rs:105:5
[INFO] [stderr]     |
[INFO] [stderr] 105 |     fn add_output_connection(&mut self, output_connection: Connection) {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.65s
[INFO] running `"docker" "inspect" "b029fbe11ec8feb2abf8202d04e7c405508722663726a06bf97da5ef9d44c7f4"`
[INFO] running `"docker" "rm" "-f" "b029fbe11ec8feb2abf8202d04e7c405508722663726a06bf97da5ef9d44c7f4"`
[INFO] [stdout] b029fbe11ec8feb2abf8202d04e7c405508722663726a06bf97da5ef9d44c7f4