[INFO] crate neuroflow 0.1.3 is already in cache
[INFO] extracting crate neuroflow 0.1.3 into work/ex/pr-56955/sources/master#d99a320cba42f661aebfa1293b7b2ec3603dda75/reg/neuroflow/0.1.3
[INFO] extracting crate neuroflow 0.1.3 into work/ex/pr-56955/sources/try#e70472fc501b855c9080f3772432c10fe20b8866/reg/neuroflow/0.1.3
[INFO] validating manifest of neuroflow-0.1.3 on toolchain master#d99a320cba42f661aebfa1293b7b2ec3603dda75
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+d99a320cba42f661aebfa1293b7b2ec3603dda75-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of neuroflow-0.1.3 on toolchain try#e70472fc501b855c9080f3772432c10fe20b8866
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+e70472fc501b855c9080f3772432c10fe20b8866-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing neuroflow-0.1.3
[INFO] finished frobbing neuroflow-0.1.3
[INFO] frobbed toml for neuroflow-0.1.3 written to work/ex/pr-56955/sources/master#d99a320cba42f661aebfa1293b7b2ec3603dda75/reg/neuroflow/0.1.3/Cargo.toml
[INFO] started frobbing neuroflow-0.1.3
[INFO] finished frobbing neuroflow-0.1.3
[INFO] frobbed toml for neuroflow-0.1.3 written to work/ex/pr-56955/sources/try#e70472fc501b855c9080f3772432c10fe20b8866/reg/neuroflow/0.1.3/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+d99a320cba42f661aebfa1293b7b2ec3603dda75-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+e70472fc501b855c9080f3772432c10fe20b8866-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+d99a320cba42f661aebfa1293b7b2ec3603dda75-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+e70472fc501b855c9080f3772432c10fe20b8866-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking neuroflow-0.1.3 against master#d99a320cba42f661aebfa1293b7b2ec3603dda75 for pr-56955
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56955/worker-4/master#d99a320cba42f661aebfa1293b7b2ec3603dda75:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-56955/sources/master#d99a320cba42f661aebfa1293b7b2ec3603dda75/reg/neuroflow/0.1.3:/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" "+d99a320cba42f661aebfa1293b7b2ec3603dda75-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] bd0064931ebac620dbff29354cfb53f563ba69bc79caf279ae13920d11acd30e
[INFO] running `"docker" "start" "-a" "bd0064931ebac620dbff29354cfb53f563ba69bc79caf279ae13920d11acd30e"`
[INFO] [stderr]     Checking neuroflow v0.1.3 (/opt/crater/workdir)
[INFO] [stderr] warning: unused variable: `nn`
[INFO] [stderr]   --> src/estimators/mod.rs:26:12
[INFO] [stderr]    |
[INFO] [stderr] 26 | pub fn OBS(nn: &super::FeedForward) {
[INFO] [stderr]    |            ^^ help: consider using `_nn` instead
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `obj`
[INFO] [stderr]   --> src/io/mod.rs:85:37
[INFO] [stderr]    |
[INFO] [stderr] 85 | pub fn to_json<T: serde::Serialize>(obj: T) {
[INFO] [stderr]    |                                     ^^^ help: consider using `_obj` instead
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `s`
[INFO] [stderr]   --> src/io/mod.rs:90:18
[INFO] [stderr]    |
[INFO] [stderr] 90 | pub fn from_json(s: &str){
[INFO] [stderr]    |                  ^ help: consider using `_s` instead
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `nn`
[INFO] [stderr]   --> src/estimators/mod.rs:26:12
[INFO] [stderr]    |
[INFO] [stderr] 26 | pub fn OBS(nn: &super::FeedForward) {
[INFO] [stderr]    |            ^^ help: consider using `_nn` instead
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `obj`
[INFO] [stderr]   --> src/io/mod.rs:85:37
[INFO] [stderr]    |
[INFO] [stderr] 85 | pub fn to_json<T: serde::Serialize>(obj: T) {
[INFO] [stderr]    |                                     ^^^ help: consider using `_obj` instead
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `s`
[INFO] [stderr]   --> src/io/mod.rs:90:18
[INFO] [stderr]    |
[INFO] [stderr] 90 | pub fn from_json(s: &str){
[INFO] [stderr]    |                  ^ help: consider using `_s` instead
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.88s
[INFO] running `"docker" "inspect" "bd0064931ebac620dbff29354cfb53f563ba69bc79caf279ae13920d11acd30e"`
[INFO] running `"docker" "rm" "-f" "bd0064931ebac620dbff29354cfb53f563ba69bc79caf279ae13920d11acd30e"`
[INFO] [stdout] bd0064931ebac620dbff29354cfb53f563ba69bc79caf279ae13920d11acd30e