[INFO] crate container-what 0.1.0 is already in cache
[INFO] extracting crate container-what 0.1.0 into work/ex/clippy-test-run/sources/stable/reg/container-what/0.1.0
[INFO] extracting crate container-what 0.1.0 into work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/reg/container-what/0.1.0
[INFO] validating manifest of container-what-0.1.0 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 container-what-0.1.0 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 container-what-0.1.0
[INFO] finished frobbing container-what-0.1.0
[INFO] frobbed toml for container-what-0.1.0 written to work/ex/clippy-test-run/sources/stable/reg/container-what/0.1.0/Cargo.toml
[INFO] started frobbing container-what-0.1.0
[INFO] finished frobbing container-what-0.1.0
[INFO] frobbed toml for container-what-0.1.0 written to work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/reg/container-what/0.1.0/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+stable" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+stable" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[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 container-what-0.1.0 against stable for clippy-test-run
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/clippy-test-run/worker-1/stable:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/clippy-test-run/sources/stable/reg/container-what/0.1.0:/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] 8638e5f475b7ea1bd2f598c04f905771de269cee48ec0b6f448d022001cf3723
[INFO] running `"docker" "start" "-a" "8638e5f475b7ea1bd2f598c04f905771de269cee48ec0b6f448d022001cf3723"`
[INFO] [stderr]     Checking container-what v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> src/container/detector.rs:51:17
[INFO] [stderr]    |
[INFO] [stderr] 51 |                 return false;
[INFO] [stderr]    |                 ^^^^^^^^^^^^^ help: remove `return` as shown: `false`
[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/container/detector.rs:54:17
[INFO] [stderr]    |
[INFO] [stderr] 54 |                 return false;
[INFO] [stderr]    |                 ^^^^^^^^^^^^^ help: remove `return` as shown: `false`
[INFO] [stderr]    |
[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/container/detector.rs:83:9
[INFO] [stderr]    |
[INFO] [stderr] 83 |         return ContainerEngine::Unknown;
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `ContainerEngine::Unknown`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: single-character string constant used as pattern
[INFO] [stderr]   --> src/container/detector.rs:46:43
[INFO] [stderr]    |
[INFO] [stderr] 46 |                 for line in content.split("\x00") {
[INFO] [stderr]    |                                           ^^^^^^ help: try using a char instead: `'\x00'`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::single_char_pattern)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#single_char_pattern
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> src/container/detector.rs:51:17
[INFO] [stderr]    |
[INFO] [stderr] 51 |                 return false;
[INFO] [stderr]    |                 ^^^^^^^^^^^^^ help: remove `return` as shown: `false`
[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/container/detector.rs:54:17
[INFO] [stderr]    |
[INFO] [stderr] 54 |                 return false;
[INFO] [stderr]    |                 ^^^^^^^^^^^^^ help: remove `return` as shown: `false`
[INFO] [stderr]    |
[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/container/detector.rs:83:9
[INFO] [stderr]    |
[INFO] [stderr] 83 |         return ContainerEngine::Unknown;
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `ContainerEngine::Unknown`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: single-character string constant used as pattern
[INFO] [stderr]   --> src/container/detector.rs:46:43
[INFO] [stderr]    |
[INFO] [stderr] 46 |                 for line in content.split("\x00") {
[INFO] [stderr]    |                                           ^^^^^^ help: try using a char instead: `'\x00'`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::single_char_pattern)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#single_char_pattern
[INFO] [stderr] 
[INFO] [stderr] warning: use of `unwrap_or` followed by a function call
[INFO] [stderr]   --> src/lib.rs:17:51
[INFO] [stderr]    |
[INFO] [stderr] 17 |         let mut base_dir = env::var("TESTS_PATH").unwrap_or("/root".to_string());
[INFO] [stderr]    |                                                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `unwrap_or_else(|_| "/root".to_string())`
[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: single-character string constant used as pattern
[INFO] [stderr]   --> src/lib.rs:18:32
[INFO] [stderr]    |
[INFO] [stderr] 18 |         if !base_dir.ends_with("/") {
[INFO] [stderr]    |                                ^^^ help: try using a char instead: `'/'`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#single_char_pattern
[INFO] [stderr] 
[INFO] [stderr] warning: `ref` on an entire `let` pattern is discouraged, take a reference with `&` instead
[INFO] [stderr]   --> src/lib.rs:27:13
[INFO] [stderr]    |
[INFO] [stderr] 27 |         let ref lxc_path = test_case_path_str("lxc");
[INFO] [stderr]    |         ----^^^^^^^^^^^^----------------------------- help: try: `let lxc_path = &test_case_path_str("lxc");`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::toplevel_ref_arg)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#toplevel_ref_arg
[INFO] [stderr] 
[INFO] [stderr] warning: `ref` on an entire `let` pattern is discouraged, take a reference with `&` instead
[INFO] [stderr]   --> src/lib.rs:28:13
[INFO] [stderr]    |
[INFO] [stderr] 28 |         let ref ctx = DetectorContext::new(Path::new(lxc_path));
[INFO] [stderr]    |         ----^^^^^^^--------------------------------------------- help: try: `let ctx = &DetectorContext::new(Path::new(lxc_path));`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#toplevel_ref_arg
[INFO] [stderr] 
[INFO] [stderr] warning: `ref` on an entire `let` pattern is discouraged, take a reference with `&` instead
[INFO] [stderr]   --> src/lib.rs:34:13
[INFO] [stderr]    |
[INFO] [stderr] 34 |         let ref docker_path = test_case_path_str("docker");
[INFO] [stderr]    |         ----^^^^^^^^^^^^^^^-------------------------------- help: try: `let docker_path = &test_case_path_str("docker");`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#toplevel_ref_arg
[INFO] [stderr] 
[INFO] [stderr] warning: `ref` on an entire `let` pattern is discouraged, take a reference with `&` instead
[INFO] [stderr]   --> src/lib.rs:35:13
[INFO] [stderr]    |
[INFO] [stderr] 35 |         let ref ctx = DetectorContext::new(Path::new(docker_path));
[INFO] [stderr]    |         ----^^^^^^^------------------------------------------------ help: try: `let ctx = &DetectorContext::new(Path::new(docker_path));`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#toplevel_ref_arg
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.89s
[INFO] running `"docker" "inspect" "8638e5f475b7ea1bd2f598c04f905771de269cee48ec0b6f448d022001cf3723"`
[INFO] running `"docker" "rm" "-f" "8638e5f475b7ea1bd2f598c04f905771de269cee48ec0b6f448d022001cf3723"`
[INFO] [stdout] 8638e5f475b7ea1bd2f598c04f905771de269cee48ec0b6f448d022001cf3723