[INFO] crate newron 0.4.0 is already in cache
[INFO] checking newron-0.4.0 against try#d93021f5faa26e4f9d2719e79f9974e06aa40e17 for pr-71873
[INFO] extracting crate newron 0.4.0 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate newron 0.4.0 on toolchain d93021f5faa26e4f9d2719e79f9974e06aa40e17
[INFO] running `"/workspace/cargo-home/bin/cargo" "+d93021f5faa26e4f9d2719e79f9974e06aa40e17" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate newron 0.4.0
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate newron 0.4.0
[INFO] tweaked toml for crates.io crate newron 0.4.0 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate crates.io crate newron 0.4.0 already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+d93021f5faa26e4f9d2719e79f9974e06aa40e17" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+d93021f5faa26e4f9d2719e79f9974e06aa40e17" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] d2f73dfff37932282fd06badef150b47354cb7f7b978f26e174cbd8e0303d84a
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `"docker" "start" "-a" "d2f73dfff37932282fd06badef150b47354cb7f7b978f26e174cbd8e0303d84a"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]     Checking newron v0.4.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused variable: `header`
[INFO] [stderr]   --> src/dataset.rs:88:34
[INFO] [stderr]    |
[INFO] [stderr] 88 |     pub fn from_csv(path: &Path, header: bool) -> Result<Dataset, DatasetError> {
[INFO] [stderr]    |                                  ^^^^^^ help: if this is intentional, prefix it with an underscore: `_header`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `train`
[INFO] [stderr]   --> src/sequential.rs:55:55
[INFO] [stderr]    |
[INFO] [stderr] 55 |     fn forward_propagation(&mut self, input: &Tensor, train: bool) -> Vec<Tensor> {
[INFO] [stderr]    |                                                       ^^^^^ help: if this is intentional, prefix it with an underscore: `_train`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `header`
[INFO] [stderr]   --> src/dataset.rs:88:34
[INFO] [stderr]    |
[INFO] [stderr] 88 |     pub fn from_csv(path: &Path, header: bool) -> Result<Dataset, DatasetError> {
[INFO] [stderr]    |                                  ^^^^^^ help: if this is intentional, prefix it with an underscore: `_header`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `rand_range`
[INFO] [stderr]   --> src/random.rs:36:12
[INFO] [stderr]    |
[INFO] [stderr] 36 |     pub fn rand_range(&mut self, a: i32, b: i32) -> i32 {
[INFO] [stderr]    |            ^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `train`
[INFO] [stderr]   --> src/sequential.rs:55:55
[INFO] [stderr]    |
[INFO] [stderr] 55 |     fn forward_propagation(&mut self, input: &Tensor, train: bool) -> Vec<Tensor> {
[INFO] [stderr]    |                                                       ^^^^^ help: if this is intentional, prefix it with an underscore: `_train`
[INFO] [stderr] 
[INFO] [stderr] warning: 3 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `rand_range`
[INFO] [stderr]   --> src/random.rs:36:12
[INFO] [stderr]    |
[INFO] [stderr] 36 |     pub fn rand_range(&mut self, a: i32, b: i32) -> i32 {
[INFO] [stderr]    |            ^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 3 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.86s
[INFO] running `"docker" "inspect" "d2f73dfff37932282fd06badef150b47354cb7f7b978f26e174cbd8e0303d84a"`
[INFO] running `"docker" "rm" "-f" "d2f73dfff37932282fd06badef150b47354cb7f7b978f26e174cbd8e0303d84a"`
[INFO] [stdout] d2f73dfff37932282fd06badef150b47354cb7f7b978f26e174cbd8e0303d84a