[INFO] updating cached repository otaviopace/form_math_web
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/otaviopace/form_math_web
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/otaviopace/form_math_web" "work/ex/clippy-test-run/sources/stable/gh/otaviopace/form_math_web"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable/gh/otaviopace/form_math_web'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/otaviopace/form_math_web" "work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/otaviopace/form_math_web"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/otaviopace/form_math_web'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] f61e33e665e62ed924d210c57ab1da1927692098
[INFO] sha for GitHub repo otaviopace/form_math_web: f61e33e665e62ed924d210c57ab1da1927692098
[INFO] validating manifest of otaviopace/form_math_web 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 otaviopace/form_math_web 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 otaviopace/form_math_web
[INFO] finished frobbing otaviopace/form_math_web
[INFO] frobbed toml for otaviopace/form_math_web written to work/ex/clippy-test-run/sources/stable/gh/otaviopace/form_math_web/Cargo.toml
[INFO] started frobbing otaviopace/form_math_web
[INFO] finished frobbing otaviopace/form_math_web
[INFO] frobbed toml for otaviopace/form_math_web written to work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/otaviopace/form_math_web/Cargo.toml
[INFO] crate otaviopace/form_math_web 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 otaviopace/form_math_web against stable for clippy-test-run
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/clippy-test-run/worker-2/stable:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/clippy-test-run/sources/stable/gh/otaviopace/form_math_web:/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] 24690e7293c902113f589c931fdabdb6c5b0fd8a982ae14192fa1722ae5c63ef
[INFO] running `"docker" "start" "-a" "24690e7293c902113f589c931fdabdb6c5b0fd8a982ae14192fa1722ae5c63ef"`
[INFO] [stderr]     Checking math_utils v0.1.0
[INFO] [stderr]     Checking serde_json v0.8.6
[INFO] [stderr]     Checking hyper v0.10.13
[INFO] [stderr]     Checking iron v0.5.1
[INFO] [stderr]     Checking persistent v0.3.0
[INFO] [stderr]     Checking router v0.5.1
[INFO] [stderr]     Checking bodyparser v0.5.0
[INFO] [stderr]     Checking urlencoded v0.5.0
[INFO] [stderr]     Checking form_math_web v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: useless use of `format!`
[INFO] [stderr]   --> src/main.rs:85:30
[INFO] [stderr]    |
[INFO] [stderr] 85 |             response.set_mut(format!("form data has no 'n' parameter\n"));
[INFO] [stderr]    |                              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using .to_string(): `"form data has no 'n' parameter\n".to_string()`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::useless_format)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_format
[INFO] [stderr] 
[INFO] [stderr] warning: useless use of `format!`
[INFO] [stderr]   --> src/main.rs:85:30
[INFO] [stderr]    |
[INFO] [stderr] 85 |             response.set_mut(format!("form data has no 'n' parameter\n"));
[INFO] [stderr]    |                              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using .to_string(): `"form data has no 'n' parameter\n".to_string()`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::useless_format)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_format
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 12.71s
[INFO] running `"docker" "inspect" "24690e7293c902113f589c931fdabdb6c5b0fd8a982ae14192fa1722ae5c63ef"`
[INFO] running `"docker" "rm" "-f" "24690e7293c902113f589c931fdabdb6c5b0fd8a982ae14192fa1722ae5c63ef"`
[INFO] [stdout] 24690e7293c902113f589c931fdabdb6c5b0fd8a982ae14192fa1722ae5c63ef