Dec 11 13:26:52.805 INFO checking mmstick/parallel against master#3a75e80557a103497cffbcab395a2f37061a77ea for pr-56677
Dec 11 13:26:52.805 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56677/worker-4/master#3a75e80557a103497cffbcab395a2f37061a77ea:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-4/pr-56677/master#3a75e80557a103497cffbcab395a2f37061a77ea:/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 +3a75e80557a103497cffbcab395a2f37061a77ea-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"`
Dec 11 13:26:53.214 INFO [stdout] a743d27ab6b464f8ddd99355b22bbaaf7a0509f12d18ba5ef1959fa22e9386b6
Dec 11 13:26:53.216 INFO running `"docker" "start" "-a" "a743d27ab6b464f8ddd99355b22bbaaf7a0509f12d18ba5ef1959fa22e9386b6"`
Dec 11 13:26:54.707 INFO [stderr] usermod: no changes
Dec 11 13:26:54.851 INFO [stderr]     Checking permutate v0.3.2
Dec 11 13:26:54.851 INFO [stderr]     Checking numtoa v0.0.7
Dec 11 13:26:54.851 INFO [stderr]    Compiling sys-info v0.5.0
Dec 11 13:26:54.851 INFO [stderr]     Checking wait-timeout v0.1.5
Dec 11 13:26:54.860 INFO [stderr]     Checking arrayvec v0.4.6
Dec 11 13:26:57.513 INFO [stderr]     Checking parallel v0.11.3 (/source)
Dec 11 13:26:58.074 INFO [stderr] warning: doc comment not used by rustdoc
Dec 11 13:26:58.074 INFO [stderr]    --> src/main.rs:242:9
Dec 11 13:26:58.074 INFO [stderr]     |
Dec 11 13:26:58.074 INFO [stderr] 242 |         /// Prints messages from executed commands in the correct order.
Dec 11 13:26:58.074 INFO [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 13:26:58.074 INFO [stderr]     |
Dec 11 13:26:58.075 INFO [stderr]     = note: #[warn(unused_doc_comments)] on by default
Dec 11 13:26:58.075 INFO [stderr] 
Dec 11 13:26:58.075 INFO [stderr] warning: doc comment not used by rustdoc
Dec 11 13:26:58.075 INFO [stderr]    --> src/main.rs:245:9
Dec 11 13:26:58.075 INFO [stderr]     |
Dec 11 13:26:58.075 INFO [stderr] 245 |         /// Wait for all threads to exit before proceeding.
Dec 11 13:26:58.075 INFO [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 13:26:58.075 INFO [stderr] 
Dec 11 13:26:58.355 INFO [stderr] warning: unnecessary parentheses around method argument
Dec 11 13:26:58.355 INFO [stderr]    --> src/input_iterator/iterator.rs:231:48
Dec 11 13:26:58.356 INFO [stderr]     |
Dec 11 13:26:58.356 INFO [stderr] 231 |         for (actual, expected) in iterator.zip((1..4096)) {
Dec 11 13:26:58.356 INFO [stderr]     |                                                ^^^^^^^^^ help: remove these parentheses
Dec 11 13:26:58.357 INFO [stderr]     |
Dec 11 13:26:58.357 INFO [stderr]     = note: #[warn(unused_parens)] on by default
Dec 11 13:26:58.357 INFO [stderr] 
Dec 11 13:26:58.359 INFO [stderr] warning: doc comment not used by rustdoc
Dec 11 13:26:58.360 INFO [stderr]    --> src/main.rs:242:9
Dec 11 13:26:58.360 INFO [stderr]     |
Dec 11 13:26:58.360 INFO [stderr] 242 |         /// Prints messages from executed commands in the correct order.
Dec 11 13:26:58.361 INFO [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 13:26:58.361 INFO [stderr]     |
Dec 11 13:26:58.361 INFO [stderr]     = note: #[warn(unused_doc_comments)] on by default
Dec 11 13:26:58.361 INFO [stderr] 
Dec 11 13:26:58.362 INFO [stderr] warning: doc comment not used by rustdoc
Dec 11 13:26:58.362 INFO [stderr]    --> src/main.rs:245:9
Dec 11 13:26:58.363 INFO [stderr]     |
Dec 11 13:26:58.363 INFO [stderr] 245 |         /// Wait for all threads to exit before proceeding.
Dec 11 13:26:58.363 INFO [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 13:26:58.363 INFO [stderr] 
Dec 11 13:26:58.940 INFO [stderr] warning: variable does not need to be mutable
Dec 11 13:26:58.941 INFO [stderr]    --> src/arguments/mod.rs:553:9
Dec 11 13:26:58.941 INFO [stderr]     |
Dec 11 13:26:58.941 INFO [stderr] 553 |     let mut append_list = &mut Vec::new();
Dec 11 13:26:58.942 INFO [stderr]     |         ----^^^^^^^^^^^
Dec 11 13:26:58.942 INFO [stderr]     |         |
Dec 11 13:26:58.942 INFO [stderr]     |         help: remove this `mut`
Dec 11 13:26:58.942 INFO [stderr]     |
Dec 11 13:26:58.943 INFO [stderr]     = note: #[warn(unused_mut)] on by default
Dec 11 13:26:58.943 INFO [stderr] 
Dec 11 13:26:59.088 INFO [stderr] warning: variable does not need to be mutable
Dec 11 13:26:59.089 INFO [stderr]   --> src/execute/exec_commands.rs:36:13
Dec 11 13:26:59.089 INFO [stderr]    |
Dec 11 13:26:59.089 INFO [stderr] 36 |         let mut command_buffer = &mut String::with_capacity(64);
Dec 11 13:26:59.089 INFO [stderr]    |             ----^^^^^^^^^^^^^^
Dec 11 13:26:59.090 INFO [stderr]    |             |
Dec 11 13:26:59.090 INFO [stderr]    |             help: remove this `mut`
Dec 11 13:26:59.090 INFO [stderr] 
Dec 11 13:26:59.184 INFO [stderr] warning: variable does not need to be mutable
Dec 11 13:26:59.185 INFO [stderr]   --> src/execute/pipe.rs:41:17
Dec 11 13:26:59.185 INFO [stderr]    |
Dec 11 13:26:59.185 INFO [stderr] 41 |             let mut stdout = child.stdout.as_mut().expect("unable to open stdout of child");
Dec 11 13:26:59.186 INFO [stderr]    |                 ----^^^^^^
Dec 11 13:26:59.186 INFO [stderr]    |                 |
Dec 11 13:26:59.186 INFO [stderr]    |                 help: remove this `mut`
Dec 11 13:26:59.187 INFO [stderr] 
Dec 11 13:26:59.565 INFO [stderr] warning: variable does not need to be mutable
Dec 11 13:26:59.565 INFO [stderr]    --> src/arguments/mod.rs:553:9
Dec 11 13:26:59.565 INFO [stderr]     |
Dec 11 13:26:59.565 INFO [stderr] 553 |     let mut append_list = &mut Vec::new();
Dec 11 13:26:59.565 INFO [stderr]     |         ----^^^^^^^^^^^
Dec 11 13:26:59.565 INFO [stderr]     |         |
Dec 11 13:26:59.566 INFO [stderr]     |         help: remove this `mut`
Dec 11 13:26:59.566 INFO [stderr]     |
Dec 11 13:26:59.566 INFO [stderr]     = note: #[warn(unused_mut)] on by default
Dec 11 13:26:59.566 INFO [stderr] 
Dec 11 13:26:59.644 INFO [stderr] warning: variable does not need to be mutable
Dec 11 13:26:59.644 INFO [stderr]   --> src/execute/exec_commands.rs:36:13
Dec 11 13:26:59.644 INFO [stderr]    |
Dec 11 13:26:59.644 INFO [stderr] 36 |         let mut command_buffer = &mut String::with_capacity(64);
Dec 11 13:26:59.644 INFO [stderr]    |             ----^^^^^^^^^^^^^^
Dec 11 13:26:59.644 INFO [stderr]    |             |
Dec 11 13:26:59.644 INFO [stderr]    |             help: remove this `mut`
Dec 11 13:26:59.644 INFO [stderr] 
Dec 11 13:26:59.701 INFO [stderr] warning: variable does not need to be mutable
Dec 11 13:26:59.701 INFO [stderr]   --> src/execute/pipe.rs:41:17
Dec 11 13:26:59.701 INFO [stderr]    |
Dec 11 13:26:59.701 INFO [stderr] 41 |             let mut stdout = child.stdout.as_mut().expect("unable to open stdout of child");
Dec 11 13:26:59.701 INFO [stderr]    |                 ----^^^^^^
Dec 11 13:26:59.701 INFO [stderr]    |                 |
Dec 11 13:26:59.701 INFO [stderr]    |                 help: remove this `mut`
Dec 11 13:26:59.701 INFO [stderr] 
Dec 11 13:26:59.880 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 5.15s
Dec 11 13:26:59.893 INFO [stderr] su: No module specific data is present
Dec 11 13:27:01.605 INFO running `"docker" "inspect" "a743d27ab6b464f8ddd99355b22bbaaf7a0509f12d18ba5ef1959fa22e9386b6"`
Dec 11 13:27:02.074 INFO running `"docker" "rm" "-f" "a743d27ab6b464f8ddd99355b22bbaaf7a0509f12d18ba5ef1959fa22e9386b6"`
Dec 11 13:27:02.480 INFO [stdout] a743d27ab6b464f8ddd99355b22bbaaf7a0509f12d18ba5ef1959fa22e9386b6