[INFO] updating cached repository testingcan/xlsx-csv
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/testingcan/xlsx-csv
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/testingcan/xlsx-csv" "work/ex/clippy-test-run/sources/stable/gh/testingcan/xlsx-csv"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable/gh/testingcan/xlsx-csv'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/testingcan/xlsx-csv" "work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/testingcan/xlsx-csv"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/testingcan/xlsx-csv'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 9219b197e9ecf2f06892a1bfd00e017b707548dc
[INFO] sha for GitHub repo testingcan/xlsx-csv: 9219b197e9ecf2f06892a1bfd00e017b707548dc
[INFO] validating manifest of testingcan/xlsx-csv 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 testingcan/xlsx-csv 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 testingcan/xlsx-csv
[INFO] finished frobbing testingcan/xlsx-csv
[INFO] frobbed toml for testingcan/xlsx-csv written to work/ex/clippy-test-run/sources/stable/gh/testingcan/xlsx-csv/Cargo.toml
[INFO] started frobbing testingcan/xlsx-csv
[INFO] finished frobbing testingcan/xlsx-csv
[INFO] frobbed toml for testingcan/xlsx-csv written to work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/testingcan/xlsx-csv/Cargo.toml
[INFO] crate testingcan/xlsx-csv 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 testingcan/xlsx-csv against stable for clippy-test-run
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/clippy-test-run/worker-6/stable:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/clippy-test-run/sources/stable/gh/testingcan/xlsx-csv:/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] a4cde5fb8de46aaed4781640ab5e1d993e08d5855b8a246d2b9fb94c6d176aec
[INFO] running `"docker" "start" "-a" "a4cde5fb8de46aaed4781640ab5e1d993e08d5855b8a246d2b9fb94c6d176aec"`
[INFO] [stderr]     Checking podio v0.1.6
[INFO] [stderr]     Checking lazy_static v1.0.2
[INFO] [stderr]     Checking rust-ini v0.12.2
[INFO] [stderr]    Compiling proc-macro2 v0.4.9
[INFO] [stderr]    Compiling miniz_oxide_c_api v0.1.3
[INFO] [stderr]     Checking miniz_oxide v0.1.3
[INFO] [stderr]     Checking atty v0.2.11
[INFO] [stderr]     Checking encoding_rs v0.7.2
[INFO] [stderr]     Checking encoding_rs v0.8.6
[INFO] [stderr]     Checking msdos_time v0.1.6
[INFO] [stderr]     Checking nom v4.0.0
[INFO] [stderr]     Checking csv-core v0.1.4
[INFO] [stderr]     Checking clap v2.32.0
[INFO] [stderr]     Checking serde_json v1.0.24
[INFO] [stderr]     Checking toml v0.4.6
[INFO] [stderr]     Checking backtrace v0.3.9
[INFO] [stderr]     Checking csv v1.0.0
[INFO] [stderr]    Compiling quote v0.6.4
[INFO] [stderr]     Checking flate2 v1.0.1
[INFO] [stderr]    Compiling syn v0.14.5
[INFO] [stderr]     Checking serde-hjson v0.8.1
[INFO] [stderr]     Checking zip v0.4.2
[INFO] [stderr]     Checking config v0.9.0
[INFO] [stderr]    Compiling synstructure v0.9.0
[INFO] [stderr]    Compiling serde_derive v1.0.70
[INFO] [stderr]    Compiling failure_derive v0.1.2
[INFO] [stderr]     Checking failure v0.1.2
[INFO] [stderr]     Checking quick-xml v0.12.1
[INFO] [stderr]     Checking calamine v0.14.3
[INFO] [stderr]     Checking xlsx-csv v0.2.2 (/opt/crater/workdir)
[INFO] [stderr] warning: unused variable: `f`
[INFO] [stderr]   --> src/file.rs:90:17
[INFO] [stderr]    |
[INFO] [stderr] 90 |         let mut f = File::create("foo.xlsx");
[INFO] [stderr]    |                 ^ help: consider using `_f` instead
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/file.rs:90:13
[INFO] [stderr]    |
[INFO] [stderr] 90 |         let mut f = File::create("foo.xlsx");
[INFO] [stderr]    |             ----^
[INFO] [stderr]    |             |
[INFO] [stderr]    |             help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_mut)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: useless use of `format!`
[INFO] [stderr]   --> src/file.rs:66:48
[INFO] [stderr]    |
[INFO] [stderr] 66 |                         DataType::String(c) => format!("{}", c),
[INFO] [stderr]    |                                                ^^^^^^^^^^^^^^^^ help: consider using .to_string(): `c.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]    = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/file.rs:93:9
[INFO] [stderr]    |
[INFO] [stderr] 93 |         remove_file("foo.xlsx");
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_must_use)] on by default
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: use of `unwrap_or` followed by a function call
[INFO] [stderr]   --> src/settings.rs:37:44
[INFO] [stderr]    |
[INFO] [stderr] 37 |             let env = env::var("RUN_MODE").unwrap_or("default".into());
[INFO] [stderr]    |                                            ^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `unwrap_or_else(|_| "default".into())`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::or_fun_call)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#or_fun_call
[INFO] [stderr] 
[INFO] [stderr] warning: useless use of `format!`
[INFO] [stderr]   --> src/file.rs:66:48
[INFO] [stderr]    |
[INFO] [stderr] 66 |                         DataType::String(c) => format!("{}", c),
[INFO] [stderr]    |                                                ^^^^^^^^^^^^^^^^ help: consider using .to_string(): `c.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]    = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of `unwrap_or` followed by a function call
[INFO] [stderr]   --> src/settings.rs:37:44
[INFO] [stderr]    |
[INFO] [stderr] 37 |             let env = env::var("RUN_MODE").unwrap_or("default".into());
[INFO] [stderr]    |                                            ^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `unwrap_or_else(|_| "default".into())`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::or_fun_call)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#or_fun_call
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 55.19s
[INFO] running `"docker" "inspect" "a4cde5fb8de46aaed4781640ab5e1d993e08d5855b8a246d2b9fb94c6d176aec"`
[INFO] running `"docker" "rm" "-f" "a4cde5fb8de46aaed4781640ab5e1d993e08d5855b8a246d2b9fb94c6d176aec"`
[INFO] [stdout] a4cde5fb8de46aaed4781640ab5e1d993e08d5855b8a246d2b9fb94c6d176aec