Nov 28 20:55:07.343 INFO checking parallel-0.11.3 against try#db42d4dad33013eba11ef37342ad9f614e5652b8 for pr-56074
Nov 28 20:55:07.343 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56074/worker-0/try#db42d4dad33013eba11ef37342ad9f614e5652b8:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-0/pr-56074/try#db42d4dad33013eba11ef37342ad9f614e5652b8:/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 +db42d4dad33013eba11ef37342ad9f614e5652b8-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 20:55:07.785 INFO [stdout] 5e3cf6fb9aa6ed26411a748b8ff996a48a8bd33421f6e62d6eb9d2d727d3f750
Nov 28 20:55:07.790 INFO running `"docker" "start" "-a" "5e3cf6fb9aa6ed26411a748b8ff996a48a8bd33421f6e62d6eb9d2d727d3f750"`
Nov 28 20:55:09.055 INFO [stderr] usermod: no changes
Nov 28 20:55:09.144 INFO [stderr]     Checking numtoa v0.0.7
Nov 28 20:55:09.144 INFO [stderr]     Checking permutate v0.3.2
Nov 28 20:55:09.144 INFO [stderr]    Compiling sys-info v0.4.1
Nov 28 20:55:10.740 INFO [stderr]     Checking parallel v0.11.3 (/source)
Nov 28 20:55:12.052 INFO [stderr] warning: doc comment not used by rustdoc
Nov 28 20:55:12.052 INFO [stderr]    --> src/main.rs:242:9
Nov 28 20:55:12.052 INFO [stderr]     |
Nov 28 20:55:12.052 INFO [stderr] 242 |         /// Prints messages from executed commands in the correct order.
Nov 28 20:55:12.052 INFO [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 28 20:55:12.052 INFO [stderr]     |
Nov 28 20:55:12.052 INFO [stderr]     = note: #[warn(unused_doc_comments)] on by default
Nov 28 20:55:12.052 INFO [stderr] 
Nov 28 20:55:12.052 INFO [stderr] warning: doc comment not used by rustdoc
Nov 28 20:55:12.052 INFO [stderr]    --> src/main.rs:245:9
Nov 28 20:55:12.052 INFO [stderr]     |
Nov 28 20:55:12.052 INFO [stderr] 245 |         /// Wait for all threads to exit before proceeding.
Nov 28 20:55:12.052 INFO [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 28 20:55:12.052 INFO [stderr] 
Nov 28 20:55:12.143 INFO [stderr] warning: unnecessary parentheses around method argument
Nov 28 20:55:12.143 INFO [stderr]    --> src/input_iterator/iterator.rs:231:48
Nov 28 20:55:12.143 INFO [stderr]     |
Nov 28 20:55:12.143 INFO [stderr] 231 |         for (actual, expected) in iterator.zip((1..4096)) {
Nov 28 20:55:12.143 INFO [stderr]     |                                                ^^^^^^^^^ help: remove these parentheses
Nov 28 20:55:12.143 INFO [stderr]     |
Nov 28 20:55:12.143 INFO [stderr]     = note: #[warn(unused_parens)] on by default
Nov 28 20:55:12.143 INFO [stderr] 
Nov 28 20:55:12.153 INFO [stderr] warning: doc comment not used by rustdoc
Nov 28 20:55:12.153 INFO [stderr]    --> src/main.rs:242:9
Nov 28 20:55:12.153 INFO [stderr]     |
Nov 28 20:55:12.153 INFO [stderr] 242 |         /// Prints messages from executed commands in the correct order.
Nov 28 20:55:12.153 INFO [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 28 20:55:12.153 INFO [stderr]     |
Nov 28 20:55:12.153 INFO [stderr]     = note: #[warn(unused_doc_comments)] on by default
Nov 28 20:55:12.153 INFO [stderr] 
Nov 28 20:55:12.153 INFO [stderr] warning: doc comment not used by rustdoc
Nov 28 20:55:12.153 INFO [stderr]    --> src/main.rs:245:9
Nov 28 20:55:12.153 INFO [stderr]     |
Nov 28 20:55:12.153 INFO [stderr] 245 |         /// Wait for all threads to exit before proceeding.
Nov 28 20:55:12.153 INFO [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 28 20:55:12.153 INFO [stderr] 
Nov 28 20:55:13.131 INFO [stderr] warning: variable does not need to be mutable
Nov 28 20:55:13.131 INFO [stderr]    --> src/arguments/mod.rs:553:9
Nov 28 20:55:13.132 INFO [stderr]     |
Nov 28 20:55:13.140 INFO [stderr] 553 |     let mut append_list = &mut Vec::new();
Nov 28 20:55:13.141 INFO [stderr]     |         ----^^^^^^^^^^^
Nov 28 20:55:13.141 INFO [stderr]     |         |
Nov 28 20:55:13.141 INFO [stderr]     |         help: remove this `mut`
Nov 28 20:55:13.142 INFO [stderr]     |
Nov 28 20:55:13.142 INFO [stderr]     = note: #[warn(unused_mut)] on by default
Nov 28 20:55:13.142 INFO [stderr] 
Nov 28 20:55:13.204 INFO [stderr] warning: variable does not need to be mutable
Nov 28 20:55:13.204 INFO [stderr]   --> src/execute/exec_commands.rs:36:13
Nov 28 20:55:13.204 INFO [stderr]    |
Nov 28 20:55:13.205 INFO [stderr] 36 |         let mut command_buffer = &mut String::with_capacity(64);
Nov 28 20:55:13.205 INFO [stderr]    |             ----^^^^^^^^^^^^^^
Nov 28 20:55:13.205 INFO [stderr]    |             |
Nov 28 20:55:13.208 INFO [stderr]    |             help: remove this `mut`
Nov 28 20:55:13.209 INFO [stderr] 
Nov 28 20:55:13.289 INFO [stderr] warning: variable does not need to be mutable
Nov 28 20:55:13.289 INFO [stderr]    --> src/arguments/mod.rs:553:9
Nov 28 20:55:13.289 INFO [stderr]     |
Nov 28 20:55:13.290 INFO [stderr] 553 |     let mut append_list = &mut Vec::new();
Nov 28 20:55:13.291 INFO [stderr]     |         ----^^^^^^^^^^^
Nov 28 20:55:13.291 INFO [stderr]     |         |
Nov 28 20:55:13.291 INFO [stderr]     |         help: remove this `mut`
Nov 28 20:55:13.292 INFO [stderr]     |
Nov 28 20:55:13.292 INFO [stderr]     = note: #[warn(unused_mut)] on by default
Nov 28 20:55:13.292 INFO [stderr] 
Nov 28 20:55:13.301 INFO [stderr] warning: variable does not need to be mutable
Nov 28 20:55:13.301 INFO [stderr]   --> src/execute/pipe.rs:41:17
Nov 28 20:55:13.302 INFO [stderr]    |
Nov 28 20:55:13.302 INFO [stderr] 41 |             let mut stdout = child.stdout.as_mut().expect("unable to open stdout of child");
Nov 28 20:55:13.308 INFO [stderr]    |                 ----^^^^^^
Nov 28 20:55:13.308 INFO [stderr]    |                 |
Nov 28 20:55:13.309 INFO [stderr]    |                 help: remove this `mut`
Nov 28 20:55:13.309 INFO [stderr] 
Nov 28 20:55:13.405 INFO [stderr] warning: variable does not need to be mutable
Nov 28 20:55:13.405 INFO [stderr]   --> src/execute/exec_commands.rs:36:13
Nov 28 20:55:13.405 INFO [stderr]    |
Nov 28 20:55:13.406 INFO [stderr] 36 |         let mut command_buffer = &mut String::with_capacity(64);
Nov 28 20:55:13.406 INFO [stderr]    |             ----^^^^^^^^^^^^^^
Nov 28 20:55:13.406 INFO [stderr]    |             |
Nov 28 20:55:13.406 INFO [stderr]    |             help: remove this `mut`
Nov 28 20:55:13.407 INFO [stderr] 
Nov 28 20:55:13.509 INFO [stderr] warning: variable does not need to be mutable
Nov 28 20:55:13.509 INFO [stderr]   --> src/execute/pipe.rs:41:17
Nov 28 20:55:13.509 INFO [stderr]    |
Nov 28 20:55:13.510 INFO [stderr] 41 |             let mut stdout = child.stdout.as_mut().expect("unable to open stdout of child");
Nov 28 20:55:13.510 INFO [stderr]    |                 ----^^^^^^
Nov 28 20:55:13.510 INFO [stderr]    |                 |
Nov 28 20:55:13.510 INFO [stderr]    |                 help: remove this `mut`
Nov 28 20:55:13.511 INFO [stderr] 
Nov 28 20:55:13.660 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4.56s
Nov 28 20:55:13.664 INFO [stderr] su: No module specific data is present
Nov 28 20:55:14.504 INFO running `"docker" "inspect" "5e3cf6fb9aa6ed26411a748b8ff996a48a8bd33421f6e62d6eb9d2d727d3f750"`
Nov 28 20:55:14.872 INFO running `"docker" "rm" "-f" "5e3cf6fb9aa6ed26411a748b8ff996a48a8bd33421f6e62d6eb9d2d727d3f750"`
Nov 28 20:55:15.154 INFO [stdout] 5e3cf6fb9aa6ed26411a748b8ff996a48a8bd33421f6e62d6eb9d2d727d3f750