[INFO] updating cached repository Riuchando/adventofcode2018
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/Riuchando/adventofcode2018
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/Riuchando/adventofcode2018" "work/ex/clippy-test-run/sources/stable/gh/Riuchando/adventofcode2018"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable/gh/Riuchando/adventofcode2018'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/Riuchando/adventofcode2018" "work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/Riuchando/adventofcode2018"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/Riuchando/adventofcode2018'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 9fc98b42c72e11e13148a53f356b5b1d27b9e690
[INFO] sha for GitHub repo Riuchando/adventofcode2018: 9fc98b42c72e11e13148a53f356b5b1d27b9e690
[INFO] validating manifest of Riuchando/adventofcode2018 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 Riuchando/adventofcode2018 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 Riuchando/adventofcode2018
[INFO] finished frobbing Riuchando/adventofcode2018
[INFO] frobbed toml for Riuchando/adventofcode2018 written to work/ex/clippy-test-run/sources/stable/gh/Riuchando/adventofcode2018/Cargo.toml
[INFO] started frobbing Riuchando/adventofcode2018
[INFO] finished frobbing Riuchando/adventofcode2018
[INFO] frobbed toml for Riuchando/adventofcode2018 written to work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/Riuchando/adventofcode2018/Cargo.toml
[INFO] crate Riuchando/adventofcode2018 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 Riuchando/adventofcode2018 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/Riuchando/adventofcode2018:/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] 3451d1d64bad0149d37d300c1cd48a18c8623621511b0d3e6eac541eecb41cf1
[INFO] running `"docker" "start" "-a" "3451d1d64bad0149d37d300c1cd48a18c8623621511b0d3e6eac541eecb41cf1"`
[INFO] [stderr]     Checking daggy v0.6.0
[INFO] [stderr]     Checking adventofcode2018 v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: literal with an empty format string
[INFO] [stderr]   --> src/main.rs:55:29
[INFO] [stderr]    |
[INFO] [stderr] 55 |         _ => println!("{}", "invalid argument"),
[INFO] [stderr]    |                             ^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::print_literal)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#print_literal
[INFO] [stderr] 
[INFO] [stderr] warning: literal with an empty format string
[INFO] [stderr]   --> src/main.rs:55:29
[INFO] [stderr]    |
[INFO] [stderr] 55 |         _ => println!("{}", "invalid argument"),
[INFO] [stderr]    |                             ^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::print_literal)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#print_literal
[INFO] [stderr] 
[INFO] [stderr] error[E0554]: #![feature] may not be used on the stable release channel
[INFO] [stderr]  --> src/main.rs:2:1
[INFO] [stderr]   |
[INFO] [stderr] 2 | #![feature(test)]
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0554`.
[INFO] [stderr] error: Could not compile `adventofcode2018`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error[E0554]: #![feature] may not be used on the stable release channel
[INFO] [stderr]  --> src/main.rs:2:1
[INFO] [stderr]   |
[INFO] [stderr] 2 | #![feature(test)]
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0554`.
[INFO] [stderr] error: Could not compile `adventofcode2018`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "3451d1d64bad0149d37d300c1cd48a18c8623621511b0d3e6eac541eecb41cf1"`
[INFO] running `"docker" "rm" "-f" "3451d1d64bad0149d37d300c1cd48a18c8623621511b0d3e6eac541eecb41cf1"`
[INFO] [stdout] 3451d1d64bad0149d37d300c1cd48a18c8623621511b0d3e6eac541eecb41cf1