[INFO] updating cached repository Ueberflieger/backpropagation
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/Ueberflieger/backpropagation
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/Ueberflieger/backpropagation" "work/ex/pr-57967/sources/master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54/gh/Ueberflieger/backpropagation"`
[INFO] [stderr] Cloning into 'work/ex/pr-57967/sources/master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54/gh/Ueberflieger/backpropagation'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/Ueberflieger/backpropagation" "work/ex/pr-57967/sources/try#7fea0229842e79db1159ea58ad9a653b288efee9/gh/Ueberflieger/backpropagation"`
[INFO] [stderr] Cloning into 'work/ex/pr-57967/sources/try#7fea0229842e79db1159ea58ad9a653b288efee9/gh/Ueberflieger/backpropagation'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] fe73214c315b49a58e409a8e5924165aafd9dfde
[INFO] sha for GitHub repo Ueberflieger/backpropagation: fe73214c315b49a58e409a8e5924165aafd9dfde
[INFO] validating manifest of Ueberflieger/backpropagation on toolchain master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of Ueberflieger/backpropagation on toolchain try#7fea0229842e79db1159ea58ad9a653b288efee9
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+7fea0229842e79db1159ea58ad9a653b288efee9-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing Ueberflieger/backpropagation
[INFO] finished frobbing Ueberflieger/backpropagation
[INFO] frobbed toml for Ueberflieger/backpropagation written to work/ex/pr-57967/sources/master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54/gh/Ueberflieger/backpropagation/Cargo.toml
[INFO] started frobbing Ueberflieger/backpropagation
[INFO] finished frobbing Ueberflieger/backpropagation
[INFO] frobbed toml for Ueberflieger/backpropagation written to work/ex/pr-57967/sources/try#7fea0229842e79db1159ea58ad9a653b288efee9/gh/Ueberflieger/backpropagation/Cargo.toml
[INFO] crate Ueberflieger/backpropagation has a lockfile. skipping
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+7fea0229842e79db1159ea58ad9a653b288efee9-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing Ueberflieger/backpropagation against try#7fea0229842e79db1159ea58ad9a653b288efee9 for pr-57967
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-57967/worker-4/try#7fea0229842e79db1159ea58ad9a653b288efee9:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-57967/sources/try#7fea0229842e79db1159ea58ad9a653b288efee9/gh/Ueberflieger/backpropagation:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/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" "+7fea0229842e79db1159ea58ad9a653b288efee9-alt" "build" "--frozen"`
[INFO] [stdout] b8aee8026e0d2fd44c91e40b66d7a1b29ef2bde15d2a19f8db8efe8d54113806
[INFO] running `"docker" "start" "-a" "b8aee8026e0d2fd44c91e40b66d7a1b29ef2bde15d2a19f8db8efe8d54113806"`
[INFO] [stderr]    Compiling backpropagation v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: method is never used: `calculate_output`
[INFO] [stderr]  --> src/neuron.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 |     fn calculate_output(&self, input: f64) -> f64 {
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.36s
[INFO] running `"docker" "inspect" "b8aee8026e0d2fd44c91e40b66d7a1b29ef2bde15d2a19f8db8efe8d54113806"`
[INFO] running `"docker" "rm" "-f" "b8aee8026e0d2fd44c91e40b66d7a1b29ef2bde15d2a19f8db8efe8d54113806"`
[INFO] [stdout] b8aee8026e0d2fd44c91e40b66d7a1b29ef2bde15d2a19f8db8efe8d54113806
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-57967/worker-4/try#7fea0229842e79db1159ea58ad9a653b288efee9:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-57967/sources/try#7fea0229842e79db1159ea58ad9a653b288efee9/gh/Ueberflieger/backpropagation:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/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" "+7fea0229842e79db1159ea58ad9a653b288efee9-alt" "test" "--frozen" "--no-run"`
[INFO] [stdout] b43432de36d9a414f9153668b8552f9af4bb062c5b189147d159dfb3adc0b813
[INFO] running `"docker" "start" "-a" "b43432de36d9a414f9153668b8552f9af4bb062c5b189147d159dfb3adc0b813"`
[INFO] [stderr]    Compiling backpropagation v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: method is never used: `calculate_output`
[INFO] [stderr]  --> src/neuron.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 |     fn calculate_output(&self, input: f64) -> f64 {
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.45s
[INFO] running `"docker" "inspect" "b43432de36d9a414f9153668b8552f9af4bb062c5b189147d159dfb3adc0b813"`
[INFO] running `"docker" "rm" "-f" "b43432de36d9a414f9153668b8552f9af4bb062c5b189147d159dfb3adc0b813"`
[INFO] [stdout] b43432de36d9a414f9153668b8552f9af4bb062c5b189147d159dfb3adc0b813
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-57967/worker-4/try#7fea0229842e79db1159ea58ad9a653b288efee9:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-57967/sources/try#7fea0229842e79db1159ea58ad9a653b288efee9/gh/Ueberflieger/backpropagation:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/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" "+7fea0229842e79db1159ea58ad9a653b288efee9-alt" "test" "--frozen"`
[INFO] [stdout] 697c4f569c822b6488004118782e75afecc3c8471ea0a9f96c9df0645b6e8dcb
[INFO] running `"docker" "start" "-a" "697c4f569c822b6488004118782e75afecc3c8471ea0a9f96c9df0645b6e8dcb"`
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stdout] running 0 tests
[INFO] [stderr]      Running /opt/crater/target/debug/deps/backpropagation-eba86dd2ac3bfbc6
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "697c4f569c822b6488004118782e75afecc3c8471ea0a9f96c9df0645b6e8dcb"`
[INFO] running `"docker" "rm" "-f" "697c4f569c822b6488004118782e75afecc3c8471ea0a9f96c9df0645b6e8dcb"`
[INFO] [stdout] 697c4f569c822b6488004118782e75afecc3c8471ea0a9f96c9df0645b6e8dcb