Oct 12 22:40:03.062 INFO checking dgoetsch/glutton against try#4021bd0b3c5815b087d6db10ce461e7e4854ade7 for pr-54977
Oct 12 22:40:03.062 INFO running `"docker" "create" "-v" "/mnt/big/crater/./work/local/target-dirs/pr-54977/worker-3/try#4021bd0b3c5815b087d6db10ce461e7e4854ade7:/target:rw,Z" "-v" "/mnt/big/crater/./work/local/test-source/worker-3/pr-54977/try#4021bd0b3c5815b087d6db10ce461e7e4854ade7:/source:ro,Z" "-v" "/mnt/big/crater/./work/local/cargo-home:/cargo-home:ro,Z" "-v" "/mnt/big/crater/./work/local/rustup-home:/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/source" "-e" "USER_ID=1000" "-e" "CMD=cargo +4021bd0b3c5815b087d6db10ce461e7e4854ade7-alt check --frozen --all --all-targets" "-e" "CARGO_TARGET_DIR=/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/cargo-home" "-e" "RUSTUP_HOME=/rustup-home" "-m" "1536M" "--network" "none" "crater"`
Oct 12 22:40:03.474 INFO blam! 01c6234a08057e05fb9d626bb5961de9370feb3778d6963a3c1b685eb10788cd
Oct 12 22:40:03.477 INFO running `"docker" "start" "-a" "01c6234a08057e05fb9d626bb5961de9370feb3778d6963a3c1b685eb10788cd"`
Oct 12 22:40:05.164 INFO kablam! usermod: no changes
Oct 12 22:40:05.309 INFO kablam!     Checking rust-by-ex v0.1.0 (/source)
Oct 12 22:40:06.226 INFO kablam! warning: unused import: `std::iter::Map`
Oct 12 22:40:06.227 INFO kablam!  --> src/main.rs:6:5
Oct 12 22:40:06.227 INFO kablam!   |
Oct 12 22:40:06.228 INFO kablam! 6 | use std::iter::Map;
Oct 12 22:40:06.228 INFO kablam!   |     ^^^^^^^^^^^^^^
Oct 12 22:40:06.229 INFO kablam!   |
Oct 12 22:40:06.230 INFO kablam!   = note: #[warn(unused_imports)] on by default
Oct 12 22:40:06.230 INFO kablam! 
Oct 12 22:40:06.231 INFO kablam! warning: unnecessary parentheses around `for` head expression
Oct 12 22:40:06.231 INFO kablam!   --> src/main.rs:18:21
Oct 12 22:40:06.232 INFO kablam!    |
Oct 12 22:40:06.232 INFO kablam! 18 |         for idx in  (0..self.at_a_time) {
Oct 12 22:40:06.233 INFO kablam!    |                     ^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
Oct 12 22:40:06.233 INFO kablam!    |
Oct 12 22:40:06.234 INFO kablam!    = note: #[warn(unused_parens)] on by default
Oct 12 22:40:06.234 INFO kablam! 
Oct 12 22:40:06.291 INFO kablam! warning: use of deprecated item 'rand::Rng::gen_ascii_chars': use sample_iter(&Alphanumeric) instead
Oct 12 22:40:06.291 INFO kablam!   --> src/main.rs:32:33
Oct 12 22:40:06.292 INFO kablam!    |
Oct 12 22:40:06.292 INFO kablam! 32 |         let name = thread_rng().gen_ascii_chars().take(10) .collect::<String>();
Oct 12 22:40:06.293 INFO kablam!    |                                 ^^^^^^^^^^^^^^^
Oct 12 22:40:06.293 INFO kablam!    |
Oct 12 22:40:06.294 INFO kablam!    = note: #[warn(deprecated)] on by default
Oct 12 22:40:06.294 INFO kablam! 
Oct 12 22:40:06.317 INFO kablam! warning: unused variable: `idx`
Oct 12 22:40:06.318 INFO kablam!   --> src/main.rs:18:13
Oct 12 22:40:06.318 INFO kablam!    |
Oct 12 22:40:06.319 INFO kablam! 18 |         for idx in  (0..self.at_a_time) {
Oct 12 22:40:06.319 INFO kablam!    |             ^^^ help: consider using `_idx` instead
Oct 12 22:40:06.320 INFO kablam!    |
Oct 12 22:40:06.320 INFO kablam!    = note: #[warn(unused_variables)] on by default
Oct 12 22:40:06.321 INFO kablam! 
Oct 12 22:40:06.322 INFO kablam! warning: unused variable: `cd_res`
Oct 12 22:40:06.322 INFO kablam!   --> src/main.rs:38:13
Oct 12 22:40:06.323 INFO kablam!    |
Oct 12 22:40:06.323 INFO kablam! 38 |         let cd_res = std::fs::create_dir_all(sub_dir.as_str());
Oct 12 22:40:06.324 INFO kablam!    |             ^^^^^^ help: consider using `_cd_res` instead
Oct 12 22:40:06.324 INFO kablam! 
Oct 12 22:40:06.325 INFO kablam! warning: unused variable: `cf_res`
Oct 12 22:40:06.325 INFO kablam!   --> src/main.rs:46:13
Oct 12 22:40:06.325 INFO kablam!    |
Oct 12 22:40:06.326 INFO kablam! 46 |         let cf_res = std::fs::File::create(file_name.as_str())
Oct 12 22:40:06.326 INFO kablam!    |             ^^^^^^ help: consider using `_cf_res` instead
Oct 12 22:40:06.332 INFO kablam! 
Oct 12 22:40:06.334 INFO kablam! warning: unused `std::result::Result` which must be used
Oct 12 22:40:06.334 INFO kablam!   --> src/main.rs:23:13
Oct 12 22:40:06.334 INFO kablam!    |
Oct 12 22:40:06.334 INFO kablam! 23 |             handler.join();
Oct 12 22:40:06.334 INFO kablam!    |             ^^^^^^^^^^^^^^^
Oct 12 22:40:06.334 INFO kablam!    |
Oct 12 22:40:06.335 INFO kablam!    = note: #[warn(unused_must_use)] on by default
Oct 12 22:40:06.335 INFO kablam! warning: unused import: `std::iter::Map`
Oct 12 22:40:06.335 INFO kablam!  --> src/main.rs:6:5
Oct 12 22:40:06.335 INFO kablam!   |
Oct 12 22:40:06.335 INFO kablam! 6 | use std::iter::Map;
Oct 12 22:40:06.336 INFO kablam!   |     ^^^^^^^^^^^^^^
Oct 12 22:40:06.336 INFO kablam!   |
Oct 12 22:40:06.336 INFO kablam!   = note: #[warn(unused_imports)] on by default
Oct 12 22:40:06.336 INFO kablam! 
Oct 12 22:40:06.336 INFO kablam! warning: unnecessary parentheses around `for` head expression
Oct 12 22:40:06.336 INFO kablam!   --> src/main.rs:18:21
Oct 12 22:40:06.336 INFO kablam!    |
Oct 12 22:40:06.336 INFO kablam! 18 |         for idx in  (0..self.at_a_time) {
Oct 12 22:40:06.336 INFO kablam!    |                     ^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
Oct 12 22:40:06.336 INFO kablam!    |
Oct 12 22:40:06.336 INFO kablam!    = note: #[warn(unused_parens)] on by default
Oct 12 22:40:06.337 INFO kablam!    = note: this `Result` may be an `Err` variant, which should be handled
Oct 12 22:40:06.337 INFO kablam! 
Oct 12 22:40:06.355 INFO kablam! 
Oct 12 22:40:06.444 INFO kablam! warning: use of deprecated item 'rand::Rng::gen_ascii_chars': use sample_iter(&Alphanumeric) instead
Oct 12 22:40:06.444 INFO kablam!   --> src/main.rs:32:33
Oct 12 22:40:06.444 INFO kablam!    |
Oct 12 22:40:06.444 INFO kablam! 32 |         let name = thread_rng().gen_ascii_chars().take(10) .collect::<String>();
Oct 12 22:40:06.445 INFO kablam!    |                                 ^^^^^^^^^^^^^^^
Oct 12 22:40:06.445 INFO kablam!    |
Oct 12 22:40:06.445 INFO kablam!    = note: #[warn(deprecated)] on by default
Oct 12 22:40:06.445 INFO kablam! 
Oct 12 22:40:06.504 INFO kablam! warning: unused variable: `idx`
Oct 12 22:40:06.504 INFO kablam!   --> src/main.rs:18:13
Oct 12 22:40:06.504 INFO kablam!    |
Oct 12 22:40:06.504 INFO kablam! 18 |         for idx in  (0..self.at_a_time) {
Oct 12 22:40:06.505 INFO kablam!    |             ^^^ help: consider using `_idx` instead
Oct 12 22:40:06.505 INFO kablam!    |
Oct 12 22:40:06.505 INFO kablam!    = note: #[warn(unused_variables)] on by default
Oct 12 22:40:06.505 INFO kablam! 
Oct 12 22:40:06.505 INFO kablam! warning: unused variable: `cd_res`
Oct 12 22:40:06.505 INFO kablam!   --> src/main.rs:38:13
Oct 12 22:40:06.505 INFO kablam!    |
Oct 12 22:40:06.505 INFO kablam! 38 |         let cd_res = std::fs::create_dir_all(sub_dir.as_str());
Oct 12 22:40:06.505 INFO kablam!    |             ^^^^^^ help: consider using `_cd_res` instead
Oct 12 22:40:06.505 INFO kablam! 
Oct 12 22:40:06.505 INFO kablam! warning: unused variable: `cf_res`
Oct 12 22:40:06.505 INFO kablam!   --> src/main.rs:46:13
Oct 12 22:40:06.505 INFO kablam!    |
Oct 12 22:40:06.505 INFO kablam! 46 |         let cf_res = std::fs::File::create(file_name.as_str())
Oct 12 22:40:06.505 INFO kablam!    |             ^^^^^^ help: consider using `_cf_res` instead
Oct 12 22:40:06.505 INFO kablam! 
Oct 12 22:40:06.520 INFO kablam! warning: unused `std::result::Result` which must be used
Oct 12 22:40:06.520 INFO kablam!   --> src/main.rs:23:13
Oct 12 22:40:06.520 INFO kablam!    |
Oct 12 22:40:06.520 INFO kablam! 23 |             handler.join();
Oct 12 22:40:06.520 INFO kablam!    |             ^^^^^^^^^^^^^^^
Oct 12 22:40:06.520 INFO kablam!    |
Oct 12 22:40:06.520 INFO kablam!    = note: #[warn(unused_must_use)] on by default
Oct 12 22:40:06.520 INFO kablam!    = note: this `Result` may be an `Err` variant, which should be handled
Oct 12 22:40:06.520 INFO kablam! 
Oct 12 22:40:06.565 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 1.37s
Oct 12 22:40:06.567 INFO kablam! su: No module specific data is present
Oct 12 22:40:07.991 INFO running `"docker" "rm" "-f" "01c6234a08057e05fb9d626bb5961de9370feb3778d6963a3c1b685eb10788cd"`
Oct 12 22:40:08.364 INFO blam! 01c6234a08057e05fb9d626bb5961de9370feb3778d6963a3c1b685eb10788cd