[INFO] updating cached repository StoneDot/server_monitor
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/StoneDot/server_monitor
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/StoneDot/server_monitor" "work/ex/clippy-test-run/sources/stable/gh/StoneDot/server_monitor"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable/gh/StoneDot/server_monitor'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/StoneDot/server_monitor" "work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/StoneDot/server_monitor"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/StoneDot/server_monitor'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 1c2669d0cb713012e7517a6765cfd9f708b947d9
[INFO] sha for GitHub repo StoneDot/server_monitor: 1c2669d0cb713012e7517a6765cfd9f708b947d9
[INFO] validating manifest of StoneDot/server_monitor on toolchain stable
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+stable" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of StoneDot/server_monitor on toolchain stable+rustflags=-Dclippy::into_iter_on_array
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+stable" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing StoneDot/server_monitor
[INFO] finished frobbing StoneDot/server_monitor
[INFO] frobbed toml for StoneDot/server_monitor written to work/ex/clippy-test-run/sources/stable/gh/StoneDot/server_monitor/Cargo.toml
[INFO] started frobbing StoneDot/server_monitor
[INFO] finished frobbing StoneDot/server_monitor
[INFO] frobbed toml for StoneDot/server_monitor written to work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/StoneDot/server_monitor/Cargo.toml
[INFO] crate StoneDot/server_monitor has a lockfile. skipping
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+stable" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+stable" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] linting StoneDot/server_monitor against stable for clippy-test-run
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/clippy-test-run/worker-4/stable:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/clippy-test-run/sources/stable/gh/StoneDot/server_monitor:/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" "+stable" "clippy" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] fa792d970253334c9cad61ddaad53ad264e2871dba4569176277ccd8108d8bea
[INFO] running `"docker" "start" "-a" "fa792d970253334c9cad61ddaad53ad264e2871dba4569176277ccd8108d8bea"`
[INFO] [stderr]     Checking either v1.3.0
[INFO] [stderr]    Compiling procinfo v0.4.2
[INFO] [stderr]    Compiling serde_derive v1.0.20
[INFO] [stderr]     Checking itertools v0.7.2
[INFO] [stderr]     Checking server_monitor v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]    --> src/main.rs:156:5
[INFO] [stderr]     |
[INFO] [stderr] 156 |     return None;
[INFO] [stderr]     |     ^^^^^^^^^^^^ help: remove `return` as shown: `None`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::needless_return)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]    --> src/main.rs:156:5
[INFO] [stderr]     |
[INFO] [stderr] 156 |     return None;
[INFO] [stderr]     |     ^^^^^^^^^^^^ help: remove `return` as shown: `None`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::needless_return)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `elapsed`
[INFO] [stderr]    --> src/main.rs:244:9
[INFO] [stderr]     |
[INFO] [stderr] 244 |     let elapsed = cur_time.duration_since(UNIX_EPOCH)
[INFO] [stderr]     |         ^^^^^^^ help: consider using `_elapsed` instead
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `elapsed`
[INFO] [stderr]    --> src/main.rs:244:9
[INFO] [stderr]     |
[INFO] [stderr] 244 |     let elapsed = cur_time.duration_since(UNIX_EPOCH)
[INFO] [stderr]     |         ^^^^^^^ help: consider using `_elapsed` instead
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 17.77s
[INFO] running `"docker" "inspect" "fa792d970253334c9cad61ddaad53ad264e2871dba4569176277ccd8108d8bea"`
[INFO] running `"docker" "rm" "-f" "fa792d970253334c9cad61ddaad53ad264e2871dba4569176277ccd8108d8bea"`
[INFO] [stdout] fa792d970253334c9cad61ddaad53ad264e2871dba4569176277ccd8108d8bea