Sep 10 03:21:32.433 INFO checking mmstick/parallel against try#3a2610c2a16575649896925631bf8cec4f4b1961 for pr-54090
Sep 10 03:21:32.433 INFO running: cargo +3a2610c2a16575649896925631bf8cec4f4b1961-alt check --frozen --all --all-targets
Sep 10 03:21:32.433 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-6/pr-54090/try#3a2610c2a16575649896925631bf8cec4f4b1961:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-54090/worker-6/try#3a2610c2a16575649896925631bf8cec4f4b1961:/target:rw,Z" "-v" "/home/ec2-user/crater/./work/local/cargo-home:/cargo-home:ro,Z" "-v" "/home/ec2-user/crater/./work/local/rustup-home:/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "CMD=cargo +3a2610c2a16575649896925631bf8cec4f4b1961-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-m" "2G" "crater"`
Sep 10 03:21:32.628 INFO blam! 8071750c88d65e6a1fe0a63569d494b9b200ae60d15b3dd3237385e427644188
Sep 10 03:21:32.630 INFO running `"docker" "start" "-a" "8071750c88d65e6a1fe0a63569d494b9b200ae60d15b3dd3237385e427644188"`
Sep 10 03:21:34.310 INFO kablam! usermod: no changes
Sep 10 03:21:34.443 INFO kablam!     Checking smallvec v0.6.0
Sep 10 03:21:34.450 INFO kablam!     Checking permutate v0.3.2
Sep 10 03:21:34.454 INFO kablam!     Checking numtoa v0.0.7
Sep 10 03:21:34.464 INFO kablam!     Checking itoa v0.3.1
Sep 10 03:21:34.464 INFO kablam!    Compiling sys-info v0.5.0
Sep 10 03:21:34.486 INFO kablam!     Checking num_cpus v1.5.1
Sep 10 03:21:34.494 INFO kablam!     Checking wait-timeout v0.1.5
Sep 10 03:21:34.502 INFO kablam!     Checking time v0.1.37
Sep 10 03:21:35.923 INFO kablam!     Checking arrayvec v0.4.6
Sep 10 03:21:38.848 INFO kablam!     Checking parallel v0.11.3 (file:///source)
Sep 10 03:21:39.394 INFO kablam! warning: doc comment not used by rustdoc
Sep 10 03:21:39.394 INFO kablam!    --> src/main.rs:242:9
Sep 10 03:21:39.394 INFO kablam!     |
Sep 10 03:21:39.394 INFO kablam! 242 |         /// Prints messages from executed commands in the correct order.
Sep 10 03:21:39.394 INFO kablam!     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Sep 10 03:21:39.394 INFO kablam!     |
Sep 10 03:21:39.394 INFO kablam!     = note: #[warn(unused_doc_comments)] on by default
Sep 10 03:21:39.394 INFO kablam! 
Sep 10 03:21:39.394 INFO kablam! warning: doc comment not used by rustdoc
Sep 10 03:21:39.394 INFO kablam!    --> src/main.rs:245:9
Sep 10 03:21:39.394 INFO kablam!     |
Sep 10 03:21:39.394 INFO kablam! 245 |         /// Wait for all threads to exit before proceeding.
Sep 10 03:21:39.394 INFO kablam!     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Sep 10 03:21:39.394 INFO kablam! 
Sep 10 03:21:39.446 INFO kablam! warning: unnecessary parentheses around method argument
Sep 10 03:21:39.446 INFO kablam!    --> src/input_iterator/iterator.rs:231:48
Sep 10 03:21:39.446 INFO kablam!     |
Sep 10 03:21:39.446 INFO kablam! 231 |         for (actual, expected) in iterator.zip((1..4096)) {
Sep 10 03:21:39.446 INFO kablam!     |                                                ^^^^^^^^^ help: remove these parentheses
Sep 10 03:21:39.446 INFO kablam!     |
Sep 10 03:21:39.447 INFO kablam!     = note: #[warn(unused_parens)] on by default
Sep 10 03:21:39.447 INFO kablam! 
Sep 10 03:21:39.449 INFO kablam! warning: doc comment not used by rustdoc
Sep 10 03:21:39.449 INFO kablam!    --> src/main.rs:242:9
Sep 10 03:21:39.449 INFO kablam!     |
Sep 10 03:21:39.449 INFO kablam! 242 |         /// Prints messages from executed commands in the correct order.
Sep 10 03:21:39.449 INFO kablam!     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Sep 10 03:21:39.449 INFO kablam!     |
Sep 10 03:21:39.449 INFO kablam!     = note: #[warn(unused_doc_comments)] on by default
Sep 10 03:21:39.449 INFO kablam! 
Sep 10 03:21:39.449 INFO kablam! warning: doc comment not used by rustdoc
Sep 10 03:21:39.449 INFO kablam!    --> src/main.rs:245:9
Sep 10 03:21:39.449 INFO kablam!     |
Sep 10 03:21:39.450 INFO kablam! 245 |         /// Wait for all threads to exit before proceeding.
Sep 10 03:21:39.450 INFO kablam!     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Sep 10 03:21:39.450 INFO kablam! 
Sep 10 03:21:40.630 INFO kablam! warning: variable does not need to be mutable
Sep 10 03:21:40.630 INFO kablam!    --> src/arguments/mod.rs:553:9
Sep 10 03:21:40.630 INFO kablam!     |
Sep 10 03:21:40.630 INFO kablam! 553 |     let mut append_list = &mut Vec::new();
Sep 10 03:21:40.630 INFO kablam!     |         ----^^^^^^^^^^^
Sep 10 03:21:40.630 INFO kablam!     |         |
Sep 10 03:21:40.630 INFO kablam!     |         help: remove this `mut`
Sep 10 03:21:40.630 INFO kablam!     |
Sep 10 03:21:40.630 INFO kablam!     = note: #[warn(unused_mut)] on by default
Sep 10 03:21:40.630 INFO kablam! 
Sep 10 03:21:40.750 INFO kablam! warning: variable does not need to be mutable
Sep 10 03:21:40.750 INFO kablam!   --> src/execute/exec_commands.rs:36:13
Sep 10 03:21:40.750 INFO kablam!    |
Sep 10 03:21:40.750 INFO kablam! 36 |         let mut command_buffer = &mut String::with_capacity(64);
Sep 10 03:21:40.750 INFO kablam!    |             ----^^^^^^^^^^^^^^
Sep 10 03:21:40.750 INFO kablam!    |             |
Sep 10 03:21:40.750 INFO kablam!    |             help: remove this `mut`
Sep 10 03:21:40.750 INFO kablam! 
Sep 10 03:21:40.846 INFO kablam! warning: variable does not need to be mutable
Sep 10 03:21:40.846 INFO kablam!    --> src/arguments/mod.rs:553:9
Sep 10 03:21:40.846 INFO kablam!     |
Sep 10 03:21:40.846 INFO kablam! 553 |     let mut append_list = &mut Vec::new();
Sep 10 03:21:40.846 INFO kablam!     |         ----^^^^^^^^^^^
Sep 10 03:21:40.846 INFO kablam!     |         |
Sep 10 03:21:40.846 INFO kablam!     |         help: remove this `mut`
Sep 10 03:21:40.846 INFO kablam!     |
Sep 10 03:21:40.846 INFO kablam!     = note: #[warn(unused_mut)] on by default
Sep 10 03:21:40.846 INFO kablam! 
Sep 10 03:21:40.870 INFO kablam! warning: variable does not need to be mutable
Sep 10 03:21:40.870 INFO kablam!   --> src/execute/pipe.rs:41:17
Sep 10 03:21:40.870 INFO kablam!    |
Sep 10 03:21:40.870 INFO kablam! 41 |             let mut stdout = child.stdout.as_mut().expect("unable to open stdout of child");
Sep 10 03:21:40.870 INFO kablam!    |                 ----^^^^^^
Sep 10 03:21:40.870 INFO kablam!    |                 |
Sep 10 03:21:40.870 INFO kablam!    |                 help: remove this `mut`
Sep 10 03:21:40.870 INFO kablam! 
Sep 10 03:21:40.918 INFO kablam! warning: variable does not need to be mutable
Sep 10 03:21:40.918 INFO kablam!   --> src/execute/exec_commands.rs:36:13
Sep 10 03:21:40.918 INFO kablam!    |
Sep 10 03:21:40.918 INFO kablam! 36 |         let mut command_buffer = &mut String::with_capacity(64);
Sep 10 03:21:40.918 INFO kablam!    |             ----^^^^^^^^^^^^^^
Sep 10 03:21:40.918 INFO kablam!    |             |
Sep 10 03:21:40.918 INFO kablam!    |             help: remove this `mut`
Sep 10 03:21:40.918 INFO kablam! 
Sep 10 03:21:40.970 INFO kablam! warning: variable does not need to be mutable
Sep 10 03:21:40.970 INFO kablam!   --> src/execute/pipe.rs:41:17
Sep 10 03:21:40.970 INFO kablam!    |
Sep 10 03:21:40.970 INFO kablam! 41 |             let mut stdout = child.stdout.as_mut().expect("unable to open stdout of child");
Sep 10 03:21:40.970 INFO kablam!    |                 ----^^^^^^
Sep 10 03:21:40.970 INFO kablam!    |                 |
Sep 10 03:21:40.970 INFO kablam!    |                 help: remove this `mut`
Sep 10 03:21:40.970 INFO kablam! 
Sep 10 03:21:41.114 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 6.78s
Sep 10 03:21:41.122 INFO kablam! su: No module specific data is present
Sep 10 03:21:41.796 INFO running `"docker" "rm" "-f" "8071750c88d65e6a1fe0a63569d494b9b200ae60d15b3dd3237385e427644188"`
Sep 10 03:21:41.916 INFO blam! 8071750c88d65e6a1fe0a63569d494b9b200ae60d15b3dd3237385e427644188