Dec 13 21:28:07.764 INFO testing dgoetsch/glutton against master#bd47d6825bf4090517549d33cfef10d3300b4a75 for pr-56550
Dec 13 21:28:07.764 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56550/worker-7/master#bd47d6825bf4090517549d33cfef10d3300b4a75:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-7/pr-56550/master#bd47d6825bf4090517549d33cfef10d3300b4a75:/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 +bd47d6825bf4090517549d33cfef10d3300b4a75-alt build --frozen" "-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"`
Dec 13 21:28:08.203 INFO [stdout] 0b0161b8779a3cffde38edb608a400815a1ab4e23744fad6e20168c01c163d38
Dec 13 21:28:08.209 INFO running `"docker" "start" "-a" "0b0161b8779a3cffde38edb608a400815a1ab4e23744fad6e20168c01c163d38"`
Dec 13 21:28:08.972 INFO [stderr] usermod: no changes
Dec 13 21:28:08.977 INFO [stderr]    Compiling rust-by-ex v0.1.0 (/source)
Dec 13 21:28:09.331 INFO [stderr] warning: unused import: `std::iter::Map`
Dec 13 21:28:09.331 INFO [stderr]  --> src/main.rs:6:5
Dec 13 21:28:09.331 INFO [stderr]   |
Dec 13 21:28:09.331 INFO [stderr] 6 | use std::iter::Map;
Dec 13 21:28:09.331 INFO [stderr]   |     ^^^^^^^^^^^^^^
Dec 13 21:28:09.331 INFO [stderr]   |
Dec 13 21:28:09.331 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 13 21:28:09.331 INFO [stderr] 
Dec 13 21:28:09.331 INFO [stderr] warning: unnecessary parentheses around `for` head expression
Dec 13 21:28:09.331 INFO [stderr]   --> src/main.rs:18:21
Dec 13 21:28:09.331 INFO [stderr]    |
Dec 13 21:28:09.332 INFO [stderr] 18 |         for idx in  (0..self.at_a_time) {
Dec 13 21:28:09.332 INFO [stderr]    |                     ^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
Dec 13 21:28:09.332 INFO [stderr]    |
Dec 13 21:28:09.332 INFO [stderr]    = note: #[warn(unused_parens)] on by default
Dec 13 21:28:09.332 INFO [stderr] 
Dec 13 21:28:09.357 INFO [stderr] warning: use of deprecated item 'rand::Rng::gen_ascii_chars': use sample_iter(&Alphanumeric) instead
Dec 13 21:28:09.357 INFO [stderr]   --> src/main.rs:32:33
Dec 13 21:28:09.357 INFO [stderr]    |
Dec 13 21:28:09.357 INFO [stderr] 32 |         let name = thread_rng().gen_ascii_chars().take(10) .collect::<String>();
Dec 13 21:28:09.357 INFO [stderr]    |                                 ^^^^^^^^^^^^^^^
Dec 13 21:28:09.357 INFO [stderr]    |
Dec 13 21:28:09.358 INFO [stderr]    = note: #[warn(deprecated)] on by default
Dec 13 21:28:09.358 INFO [stderr] 
Dec 13 21:28:09.381 INFO [stderr] warning: unused variable: `idx`
Dec 13 21:28:09.383 INFO [stderr]   --> src/main.rs:18:13
Dec 13 21:28:09.383 INFO [stderr]    |
Dec 13 21:28:09.383 INFO [stderr] 18 |         for idx in  (0..self.at_a_time) {
Dec 13 21:28:09.383 INFO [stderr]    |             ^^^ help: consider using `_idx` instead
Dec 13 21:28:09.383 INFO [stderr]    |
Dec 13 21:28:09.383 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 13 21:28:09.383 INFO [stderr] 
Dec 13 21:28:09.383 INFO [stderr] warning: unused variable: `cd_res`
Dec 13 21:28:09.383 INFO [stderr]   --> src/main.rs:38:13
Dec 13 21:28:09.383 INFO [stderr]    |
Dec 13 21:28:09.383 INFO [stderr] 38 |         let cd_res = std::fs::create_dir_all(sub_dir.as_str());
Dec 13 21:28:09.383 INFO [stderr]    |             ^^^^^^ help: consider using `_cd_res` instead
Dec 13 21:28:09.383 INFO [stderr] 
Dec 13 21:28:09.383 INFO [stderr] warning: unused variable: `cf_res`
Dec 13 21:28:09.383 INFO [stderr]   --> src/main.rs:46:13
Dec 13 21:28:09.383 INFO [stderr]    |
Dec 13 21:28:09.383 INFO [stderr] 46 |         let cf_res = std::fs::File::create(file_name.as_str())
Dec 13 21:28:09.383 INFO [stderr]    |             ^^^^^^ help: consider using `_cf_res` instead
Dec 13 21:28:09.383 INFO [stderr] 
Dec 13 21:28:09.390 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 13 21:28:09.395 INFO [stderr]   --> src/main.rs:23:13
Dec 13 21:28:09.395 INFO [stderr]    |
Dec 13 21:28:09.395 INFO [stderr] 23 |             handler.join();
Dec 13 21:28:09.395 INFO [stderr]    |             ^^^^^^^^^^^^^^^
Dec 13 21:28:09.395 INFO [stderr]    |
Dec 13 21:28:09.395 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 13 21:28:09.395 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 13 21:28:09.395 INFO [stderr] 
Dec 13 21:28:09.946 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.99s
Dec 13 21:28:09.949 INFO [stderr] su: No module specific data is present
Dec 13 21:28:10.236 INFO running `"docker" "inspect" "0b0161b8779a3cffde38edb608a400815a1ab4e23744fad6e20168c01c163d38"`
Dec 13 21:28:10.350 INFO running `"docker" "rm" "-f" "0b0161b8779a3cffde38edb608a400815a1ab4e23744fad6e20168c01c163d38"`
Dec 13 21:28:10.465 INFO [stdout] 0b0161b8779a3cffde38edb608a400815a1ab4e23744fad6e20168c01c163d38
Dec 13 21:28:10.469 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56550/worker-7/master#bd47d6825bf4090517549d33cfef10d3300b4a75:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-7/pr-56550/master#bd47d6825bf4090517549d33cfef10d3300b4a75:/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 +bd47d6825bf4090517549d33cfef10d3300b4a75-alt test --frozen --no-run" "-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"`
Dec 13 21:28:10.775 INFO [stdout] a0e43daaa6d77d7509107422b8970e14fd06d2c0ede6c908e44b9ccd630f55f0
Dec 13 21:28:10.778 INFO running `"docker" "start" "-a" "a0e43daaa6d77d7509107422b8970e14fd06d2c0ede6c908e44b9ccd630f55f0"`
Dec 13 21:28:11.346 INFO [stderr] usermod: no changes
Dec 13 21:28:11.385 INFO [stderr]    Compiling rust-by-ex v0.1.0 (/source)
Dec 13 21:28:11.807 INFO [stderr] warning: unused import: `std::iter::Map`
Dec 13 21:28:11.807 INFO [stderr]  --> src/main.rs:6:5
Dec 13 21:28:11.807 INFO [stderr]   |
Dec 13 21:28:11.807 INFO [stderr] 6 | use std::iter::Map;
Dec 13 21:28:11.807 INFO [stderr]   |     ^^^^^^^^^^^^^^
Dec 13 21:28:11.807 INFO [stderr]   |
Dec 13 21:28:11.807 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 13 21:28:11.807 INFO [stderr] 
Dec 13 21:28:11.807 INFO [stderr] warning: unnecessary parentheses around `for` head expression
Dec 13 21:28:11.807 INFO [stderr]   --> src/main.rs:18:21
Dec 13 21:28:11.807 INFO [stderr]    |
Dec 13 21:28:11.807 INFO [stderr] 18 |         for idx in  (0..self.at_a_time) {
Dec 13 21:28:11.807 INFO [stderr]    |                     ^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
Dec 13 21:28:11.807 INFO [stderr]    |
Dec 13 21:28:11.807 INFO [stderr]    = note: #[warn(unused_parens)] on by default
Dec 13 21:28:11.807 INFO [stderr] 
Dec 13 21:28:11.835 INFO [stderr] warning: use of deprecated item 'rand::Rng::gen_ascii_chars': use sample_iter(&Alphanumeric) instead
Dec 13 21:28:11.835 INFO [stderr]   --> src/main.rs:32:33
Dec 13 21:28:11.835 INFO [stderr]    |
Dec 13 21:28:11.835 INFO [stderr] 32 |         let name = thread_rng().gen_ascii_chars().take(10) .collect::<String>();
Dec 13 21:28:11.835 INFO [stderr]    |                                 ^^^^^^^^^^^^^^^
Dec 13 21:28:11.835 INFO [stderr]    |
Dec 13 21:28:11.835 INFO [stderr]    = note: #[warn(deprecated)] on by default
Dec 13 21:28:11.835 INFO [stderr] 
Dec 13 21:28:11.854 INFO [stderr] warning: unused variable: `idx`
Dec 13 21:28:11.854 INFO [stderr]   --> src/main.rs:18:13
Dec 13 21:28:11.854 INFO [stderr]    |
Dec 13 21:28:11.854 INFO [stderr] 18 |         for idx in  (0..self.at_a_time) {
Dec 13 21:28:11.854 INFO [stderr]    |             ^^^ help: consider using `_idx` instead
Dec 13 21:28:11.854 INFO [stderr]    |
Dec 13 21:28:11.854 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 13 21:28:11.854 INFO [stderr] 
Dec 13 21:28:11.854 INFO [stderr] warning: unused variable: `cd_res`
Dec 13 21:28:11.854 INFO [stderr]   --> src/main.rs:38:13
Dec 13 21:28:11.854 INFO [stderr]    |
Dec 13 21:28:11.854 INFO [stderr] 38 |         let cd_res = std::fs::create_dir_all(sub_dir.as_str());
Dec 13 21:28:11.854 INFO [stderr]    |             ^^^^^^ help: consider using `_cd_res` instead
Dec 13 21:28:11.854 INFO [stderr] 
Dec 13 21:28:11.854 INFO [stderr] warning: unused variable: `cf_res`
Dec 13 21:28:11.854 INFO [stderr]   --> src/main.rs:46:13
Dec 13 21:28:11.854 INFO [stderr]    |
Dec 13 21:28:11.854 INFO [stderr] 46 |         let cf_res = std::fs::File::create(file_name.as_str())
Dec 13 21:28:11.854 INFO [stderr]    |             ^^^^^^ help: consider using `_cf_res` instead
Dec 13 21:28:11.854 INFO [stderr] 
Dec 13 21:28:11.867 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 13 21:28:11.867 INFO [stderr]   --> src/main.rs:23:13
Dec 13 21:28:11.867 INFO [stderr]    |
Dec 13 21:28:11.867 INFO [stderr] 23 |             handler.join();
Dec 13 21:28:11.867 INFO [stderr]    |             ^^^^^^^^^^^^^^^
Dec 13 21:28:11.867 INFO [stderr]    |
Dec 13 21:28:11.867 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 13 21:28:11.867 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 13 21:28:11.867 INFO [stderr] 
Dec 13 21:28:12.113 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.75s
Dec 13 21:28:12.116 INFO [stderr] su: No module specific data is present
Dec 13 21:28:12.448 INFO running `"docker" "inspect" "a0e43daaa6d77d7509107422b8970e14fd06d2c0ede6c908e44b9ccd630f55f0"`
Dec 13 21:28:12.534 INFO running `"docker" "rm" "-f" "a0e43daaa6d77d7509107422b8970e14fd06d2c0ede6c908e44b9ccd630f55f0"`
Dec 13 21:28:12.607 INFO [stdout] a0e43daaa6d77d7509107422b8970e14fd06d2c0ede6c908e44b9ccd630f55f0
Dec 13 21:28:12.609 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56550/worker-7/master#bd47d6825bf4090517549d33cfef10d3300b4a75:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-7/pr-56550/master#bd47d6825bf4090517549d33cfef10d3300b4a75:/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 +bd47d6825bf4090517549d33cfef10d3300b4a75-alt test --frozen" "-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"`
Dec 13 21:28:12.778 INFO [stdout] 1474b84fa402a3d6fdeaf6642f5c6f9edddbb82614add42376973e1d3634c9dd
Dec 13 21:28:12.785 INFO running `"docker" "start" "-a" "1474b84fa402a3d6fdeaf6642f5c6f9edddbb82614add42376973e1d3634c9dd"`
Dec 13 21:28:13.187 INFO [stderr] usermod: no changes
Dec 13 21:28:13.232 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.02s
Dec 13 21:28:13.236 INFO [stderr]      Running /target/debug/deps/rust_by_ex-d69b4958a58fab35
Dec 13 21:28:13.244 INFO [stdout] 
Dec 13 21:28:13.244 INFO [stdout] running 0 tests
Dec 13 21:28:13.244 INFO [stdout] 
Dec 13 21:28:13.244 INFO [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
Dec 13 21:28:13.245 INFO [stdout] 
Dec 13 21:28:13.247 INFO [stderr] su: No module specific data is present
Dec 13 21:28:13.592 INFO running `"docker" "inspect" "1474b84fa402a3d6fdeaf6642f5c6f9edddbb82614add42376973e1d3634c9dd"`
Dec 13 21:28:13.722 INFO running `"docker" "rm" "-f" "1474b84fa402a3d6fdeaf6642f5c6f9edddbb82614add42376973e1d3634c9dd"`
Dec 13 21:28:13.882 INFO [stdout] 1474b84fa402a3d6fdeaf6642f5c6f9edddbb82614add42376973e1d3634c9dd