Nov 28 00:28:15.489 INFO checking mmstick/parallel against master#0b9f19dff1347e29bf4362ab5a8fab84b43023b5 for pr-56074
Nov 28 00:28:15.491 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56074/worker-4/master#0b9f19dff1347e29bf4362ab5a8fab84b43023b5:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-4/pr-56074/master#0b9f19dff1347e29bf4362ab5a8fab84b43023b5:/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 +0b9f19dff1347e29bf4362ab5a8fab84b43023b5-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"`
Nov 28 00:28:15.986 INFO [stdout] 346fc1098a50e14af2b522fe93f3054c0438a44ace0025355dbc1f7452a798fd
Nov 28 00:28:15.989 INFO running `"docker" "start" "-a" "346fc1098a50e14af2b522fe93f3054c0438a44ace0025355dbc1f7452a798fd"`
Nov 28 00:28:17.467 INFO [stderr] usermod: no changes
Nov 28 00:28:17.628 INFO [stderr]     Checking numtoa v0.0.7
Nov 28 00:28:17.628 INFO [stderr]     Checking permutate v0.3.2
Nov 28 00:28:17.628 INFO [stderr]    Compiling sys-info v0.5.0
Nov 28 00:28:17.628 INFO [stderr]     Checking wait-timeout v0.1.5
Nov 28 00:28:17.628 INFO [stderr]     Checking arrayvec v0.4.6
Nov 28 00:28:19.958 INFO [stderr]     Checking parallel v0.11.3 (/source)
Nov 28 00:28:20.628 INFO [stderr] warning: doc comment not used by rustdoc
Nov 28 00:28:20.628 INFO [stderr]    --> src/main.rs:242:9
Nov 28 00:28:20.628 INFO [stderr]     |
Nov 28 00:28:20.628 INFO [stderr] 242 |         /// Prints messages from executed commands in the correct order.
Nov 28 00:28:20.628 INFO [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 28 00:28:20.636 INFO [stderr]     |
Nov 28 00:28:20.636 INFO [stderr]     = note: #[warn(unused_doc_comments)] on by default
Nov 28 00:28:20.636 INFO [stderr] 
Nov 28 00:28:20.636 INFO [stderr] warning: doc comment not used by rustdoc
Nov 28 00:28:20.636 INFO [stderr]    --> src/main.rs:245:9
Nov 28 00:28:20.636 INFO [stderr]     |
Nov 28 00:28:20.636 INFO [stderr] 245 |         /// Wait for all threads to exit before proceeding.
Nov 28 00:28:20.636 INFO [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 28 00:28:20.636 INFO [stderr] 
Nov 28 00:28:20.881 INFO [stderr] warning: unnecessary parentheses around method argument
Nov 28 00:28:20.881 INFO [stderr]    --> src/input_iterator/iterator.rs:231:48
Nov 28 00:28:20.881 INFO [stderr]     |
Nov 28 00:28:20.882 INFO [stderr] 231 |         for (actual, expected) in iterator.zip((1..4096)) {
Nov 28 00:28:20.882 INFO [stderr]     |                                                ^^^^^^^^^ help: remove these parentheses
Nov 28 00:28:20.882 INFO [stderr]     |
Nov 28 00:28:20.883 INFO [stderr]     = note: #[warn(unused_parens)] on by default
Nov 28 00:28:20.883 INFO [stderr] 
Nov 28 00:28:20.883 INFO [stderr] warning: doc comment not used by rustdoc
Nov 28 00:28:20.884 INFO [stderr]    --> src/main.rs:242:9
Nov 28 00:28:20.884 INFO [stderr]     |
Nov 28 00:28:20.884 INFO [stderr] 242 |         /// Prints messages from executed commands in the correct order.
Nov 28 00:28:20.885 INFO [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 28 00:28:20.893 INFO [stderr]     |
Nov 28 00:28:20.893 INFO [stderr]     = note: #[warn(unused_doc_comments)] on by default
Nov 28 00:28:20.894 INFO [stderr] 
Nov 28 00:28:20.894 INFO [stderr] warning: doc comment not used by rustdoc
Nov 28 00:28:20.894 INFO [stderr]    --> src/main.rs:245:9
Nov 28 00:28:20.894 INFO [stderr]     |
Nov 28 00:28:20.895 INFO [stderr] 245 |         /// Wait for all threads to exit before proceeding.
Nov 28 00:28:20.895 INFO [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 28 00:28:20.895 INFO [stderr] 
Nov 28 00:28:22.280 INFO [stderr] warning: variable does not need to be mutable
Nov 28 00:28:22.280 INFO [stderr]    --> src/arguments/mod.rs:553:9
Nov 28 00:28:22.280 INFO [stderr]     |
Nov 28 00:28:22.280 INFO [stderr] 553 |     let mut append_list = &mut Vec::new();
Nov 28 00:28:22.280 INFO [stderr]     |         ----^^^^^^^^^^^
Nov 28 00:28:22.280 INFO [stderr]     |         |
Nov 28 00:28:22.280 INFO [stderr]     |         help: remove this `mut`
Nov 28 00:28:22.300 INFO [stderr]     |
Nov 28 00:28:22.300 INFO [stderr]     = note: #[warn(unused_mut)] on by default
Nov 28 00:28:22.300 INFO [stderr] 
Nov 28 00:28:22.436 INFO [stderr] warning: variable does not need to be mutable
Nov 28 00:28:22.436 INFO [stderr]   --> src/execute/exec_commands.rs:36:13
Nov 28 00:28:22.436 INFO [stderr]    |
Nov 28 00:28:22.436 INFO [stderr] 36 |         let mut command_buffer = &mut String::with_capacity(64);
Nov 28 00:28:22.436 INFO [stderr]    |             ----^^^^^^^^^^^^^^
Nov 28 00:28:22.436 INFO [stderr]    |             |
Nov 28 00:28:22.436 INFO [stderr]    |             help: remove this `mut`
Nov 28 00:28:22.452 INFO [stderr] 
Nov 28 00:28:22.592 INFO [stderr] warning: variable does not need to be mutable
Nov 28 00:28:22.592 INFO [stderr]   --> src/execute/pipe.rs:41:17
Nov 28 00:28:22.592 INFO [stderr]    |
Nov 28 00:28:22.592 INFO [stderr] 41 |             let mut stdout = child.stdout.as_mut().expect("unable to open stdout of child");
Nov 28 00:28:22.592 INFO [stderr]    |                 ----^^^^^^
Nov 28 00:28:22.592 INFO [stderr]    |                 |
Nov 28 00:28:22.592 INFO [stderr]    |                 help: remove this `mut`
Nov 28 00:28:22.594 INFO [stderr] 
Nov 28 00:28:22.644 INFO [stderr] warning: variable does not need to be mutable
Nov 28 00:28:22.644 INFO [stderr]    --> src/arguments/mod.rs:553:9
Nov 28 00:28:22.645 INFO [stderr]     |
Nov 28 00:28:22.646 INFO [stderr] 553 |     let mut append_list = &mut Vec::new();
Nov 28 00:28:22.646 INFO [stderr]     |         ----^^^^^^^^^^^
Nov 28 00:28:22.646 INFO [stderr]     |         |
Nov 28 00:28:22.646 INFO [stderr]     |         help: remove this `mut`
Nov 28 00:28:22.647 INFO [stderr]     |
Nov 28 00:28:22.647 INFO [stderr]     = note: #[warn(unused_mut)] on by default
Nov 28 00:28:22.648 INFO [stderr] 
Nov 28 00:28:22.730 INFO [stderr] warning: variable does not need to be mutable
Nov 28 00:28:22.730 INFO [stderr]   --> src/execute/exec_commands.rs:36:13
Nov 28 00:28:22.731 INFO [stderr]    |
Nov 28 00:28:22.732 INFO [stderr] 36 |         let mut command_buffer = &mut String::with_capacity(64);
Nov 28 00:28:22.732 INFO [stderr]    |             ----^^^^^^^^^^^^^^
Nov 28 00:28:22.733 INFO [stderr]    |             |
Nov 28 00:28:22.733 INFO [stderr]    |             help: remove this `mut`
Nov 28 00:28:22.734 INFO [stderr] 
Nov 28 00:28:22.816 INFO [stderr] warning: variable does not need to be mutable
Nov 28 00:28:22.816 INFO [stderr]   --> src/execute/pipe.rs:41:17
Nov 28 00:28:22.816 INFO [stderr]    |
Nov 28 00:28:22.816 INFO [stderr] 41 |             let mut stdout = child.stdout.as_mut().expect("unable to open stdout of child");
Nov 28 00:28:22.816 INFO [stderr]    |                 ----^^^^^^
Nov 28 00:28:22.816 INFO [stderr]    |                 |
Nov 28 00:28:22.816 INFO [stderr]    |                 help: remove this `mut`
Nov 28 00:28:22.816 INFO [stderr] 
Nov 28 00:28:23.040 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 5.53s
Nov 28 00:28:23.045 INFO [stderr] su: No module specific data is present
Nov 28 00:28:24.297 INFO running `"docker" "inspect" "346fc1098a50e14af2b522fe93f3054c0438a44ace0025355dbc1f7452a798fd"`
Nov 28 00:28:24.674 INFO running `"docker" "rm" "-f" "346fc1098a50e14af2b522fe93f3054c0438a44ace0025355dbc1f7452a798fd"`
Nov 28 00:28:24.969 INFO [stdout] 346fc1098a50e14af2b522fe93f3054c0438a44ace0025355dbc1f7452a798fd