[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/beta-1.37-6/sources/1.36.0/gh/Ueberflieger/backpropagation"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/1.36.0/gh/Ueberflieger/backpropagation'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/Ueberflieger/backpropagation" "work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/Ueberflieger/backpropagation"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/beta-2019-07-23/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 1.36.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of Ueberflieger/backpropagation on toolchain beta-2019-07-23
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "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/beta-1.37-6/sources/1.36.0/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/beta-1.37-6/sources/beta-2019-07-23/gh/Ueberflieger/backpropagation/Cargo.toml
[INFO] crate Ueberflieger/backpropagation already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing Ueberflieger/backpropagation against 1.36.0 for beta-1.37-6
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-2/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/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=warn" "-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" "+1.36.0" "build" "--frozen"`
[INFO] [stdout] 17b36d89994bc8285d5d41f3e7c575bf4a8c587b3ccc1b04938fe455bb049996
[INFO] running `"docker" "start" "-a" "17b36d89994bc8285d5d41f3e7c575bf4a8c587b3ccc1b04938fe455bb049996"`
[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" "17b36d89994bc8285d5d41f3e7c575bf4a8c587b3ccc1b04938fe455bb049996"`
[INFO] running `"docker" "rm" "-f" "17b36d89994bc8285d5d41f3e7c575bf4a8c587b3ccc1b04938fe455bb049996"`
[INFO] [stdout] 17b36d89994bc8285d5d41f3e7c575bf4a8c587b3ccc1b04938fe455bb049996
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-2/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/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=warn" "-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" "+1.36.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] 803867d722184d8f34985456bbe26e06f7d76e2334af8ee294d7545c0e140575
[INFO] running `"docker" "start" "-a" "803867d722184d8f34985456bbe26e06f7d76e2334af8ee294d7545c0e140575"`
[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 0.48s
[INFO] running `"docker" "inspect" "803867d722184d8f34985456bbe26e06f7d76e2334af8ee294d7545c0e140575"`
[INFO] running `"docker" "rm" "-f" "803867d722184d8f34985456bbe26e06f7d76e2334af8ee294d7545c0e140575"`
[INFO] [stdout] 803867d722184d8f34985456bbe26e06f7d76e2334af8ee294d7545c0e140575
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-2/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/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=warn" "-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" "+1.36.0" "test" "--frozen"`
[INFO] [stdout] 3a354359e337db64d75267edde63c79e3401e82a9d6abf562a62fad2d896fc56
[INFO] running `"docker" "start" "-a" "3a354359e337db64d75267edde63c79e3401e82a9d6abf562a62fad2d896fc56"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/backpropagation-7ee06cb05e4703cc
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "3a354359e337db64d75267edde63c79e3401e82a9d6abf562a62fad2d896fc56"`
[INFO] running `"docker" "rm" "-f" "3a354359e337db64d75267edde63c79e3401e82a9d6abf562a62fad2d896fc56"`
[INFO] [stdout] 3a354359e337db64d75267edde63c79e3401e82a9d6abf562a62fad2d896fc56