Sep 20 21:55:54.153 INFO checking mmstick/parallel against try#f1a3f05968ed2a674e09b6efa4ad9df90816e2b6 for pr-54394
Sep 20 21:55:54.153 INFO running: cargo +f1a3f05968ed2a674e09b6efa4ad9df90816e2b6-alt check --frozen --all --all-targets
Sep 20 21:55:54.153 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-4/pr-54394/try#f1a3f05968ed2a674e09b6efa4ad9df90816e2b6:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-54394/worker-4/try#f1a3f05968ed2a674e09b6efa4ad9df90816e2b6:/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 +f1a3f05968ed2a674e09b6efa4ad9df90816e2b6-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-m" "1536M" "crater"`
Sep 20 21:55:54.369 INFO blam! d490d560639b39a6dbbd18b7159748638fa19d3439804bb95ca2d1a727e6f27e
Sep 20 21:55:54.371 INFO running `"docker" "start" "-a" "d490d560639b39a6dbbd18b7159748638fa19d3439804bb95ca2d1a727e6f27e"`
Sep 20 21:55:55.622 INFO kablam! usermod: no changes
Sep 20 21:55:55.683 INFO kablam!     Checking libc v0.2.23
Sep 20 21:55:55.683 INFO kablam!     Checking permutate v0.3.2
Sep 20 21:55:55.686 INFO kablam!     Checking numtoa v0.0.7
Sep 20 21:55:55.686 INFO kablam!     Checking smallvec v0.6.0
Sep 20 21:55:55.686 INFO kablam!    Compiling sys-info v0.5.0
Sep 20 21:55:56.954 INFO kablam!     Checking time v0.1.37
Sep 20 21:55:56.954 INFO kablam!     Checking wait-timeout v0.1.5
Sep 20 21:55:56.954 INFO kablam!     Checking num_cpus v1.5.1
Sep 20 21:55:58.258 INFO kablam!     Checking parallel v0.11.3 (/source)
Sep 20 21:55:58.578 INFO kablam! warning: doc comment not used by rustdoc
Sep 20 21:55:58.578 INFO kablam!    --> src/main.rs:242:9
Sep 20 21:55:58.578 INFO kablam!     |
Sep 20 21:55:58.578 INFO kablam! 242 |         /// Prints messages from executed commands in the correct order.
Sep 20 21:55:58.578 INFO kablam!     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Sep 20 21:55:58.578 INFO kablam!     |
Sep 20 21:55:58.578 INFO kablam!     = note: #[warn(unused_doc_comments)] on by default
Sep 20 21:55:58.578 INFO kablam! 
Sep 20 21:55:58.578 INFO kablam! warning: doc comment not used by rustdoc
Sep 20 21:55:58.578 INFO kablam!    --> src/main.rs:245:9
Sep 20 21:55:58.578 INFO kablam!     |
Sep 20 21:55:58.578 INFO kablam! 245 |         /// Wait for all threads to exit before proceeding.
Sep 20 21:55:58.578 INFO kablam!     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Sep 20 21:55:58.578 INFO kablam! 
Sep 20 21:55:58.798 INFO kablam! warning: unnecessary parentheses around method argument
Sep 20 21:55:58.798 INFO kablam!    --> src/input_iterator/iterator.rs:231:48
Sep 20 21:55:58.798 INFO kablam!     |
Sep 20 21:55:58.798 INFO kablam! 231 |         for (actual, expected) in iterator.zip((1..4096)) {
Sep 20 21:55:58.798 INFO kablam!     |                                                ^^^^^^^^^ help: remove these parentheses
Sep 20 21:55:58.798 INFO kablam!     |
Sep 20 21:55:58.798 INFO kablam!     = note: #[warn(unused_parens)] on by default
Sep 20 21:55:58.803 INFO kablam! 
Sep 20 21:55:58.806 INFO kablam! warning: doc comment not used by rustdoc
Sep 20 21:55:58.806 INFO kablam!    --> src/main.rs:242:9
Sep 20 21:55:58.806 INFO kablam!     |
Sep 20 21:55:58.806 INFO kablam! 242 |         /// Prints messages from executed commands in the correct order.
Sep 20 21:55:58.806 INFO kablam!     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Sep 20 21:55:58.806 INFO kablam!     |
Sep 20 21:55:58.806 INFO kablam!     = note: #[warn(unused_doc_comments)] on by default
Sep 20 21:55:58.806 INFO kablam! 
Sep 20 21:55:58.806 INFO kablam! warning: doc comment not used by rustdoc
Sep 20 21:55:58.806 INFO kablam!    --> src/main.rs:245:9
Sep 20 21:55:58.806 INFO kablam!     |
Sep 20 21:55:58.806 INFO kablam! 245 |         /// Wait for all threads to exit before proceeding.
Sep 20 21:55:58.806 INFO kablam!     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Sep 20 21:55:58.806 INFO kablam! 
Sep 20 21:55:59.610 INFO kablam! warning: variable does not need to be mutable
Sep 20 21:55:59.610 INFO kablam!    --> src/arguments/mod.rs:553:9
Sep 20 21:55:59.610 INFO kablam!     |
Sep 20 21:55:59.610 INFO kablam! 553 |     let mut append_list = &mut Vec::new();
Sep 20 21:55:59.610 INFO kablam!     |         ----^^^^^^^^^^^
Sep 20 21:55:59.610 INFO kablam!     |         |
Sep 20 21:55:59.610 INFO kablam!     |         help: remove this `mut`
Sep 20 21:55:59.610 INFO kablam!     |
Sep 20 21:55:59.610 INFO kablam!     = note: #[warn(unused_mut)] on by default
Sep 20 21:55:59.610 INFO kablam! 
Sep 20 21:55:59.726 INFO kablam! warning: variable does not need to be mutable
Sep 20 21:55:59.726 INFO kablam!   --> src/execute/exec_commands.rs:36:13
Sep 20 21:55:59.726 INFO kablam!    |
Sep 20 21:55:59.726 INFO kablam! 36 |         let mut command_buffer = &mut String::with_capacity(64);
Sep 20 21:55:59.726 INFO kablam!    |             ----^^^^^^^^^^^^^^
Sep 20 21:55:59.726 INFO kablam!    |             |
Sep 20 21:55:59.726 INFO kablam!    |             help: remove this `mut`
Sep 20 21:55:59.726 INFO kablam! 
Sep 20 21:55:59.854 INFO kablam! warning: variable does not need to be mutable
Sep 20 21:55:59.854 INFO kablam!   --> src/execute/pipe.rs:41:17
Sep 20 21:55:59.854 INFO kablam!    |
Sep 20 21:55:59.854 INFO kablam! 41 |             let mut stdout = child.stdout.as_mut().expect("unable to open stdout of child");
Sep 20 21:55:59.854 INFO kablam!    |                 ----^^^^^^
Sep 20 21:55:59.854 INFO kablam!    |                 |
Sep 20 21:55:59.854 INFO kablam!    |                 help: remove this `mut`
Sep 20 21:55:59.854 INFO kablam! 
Sep 20 21:55:59.874 INFO kablam! warning: variable does not need to be mutable
Sep 20 21:55:59.874 INFO kablam!    --> src/arguments/mod.rs:553:9
Sep 20 21:55:59.874 INFO kablam!     |
Sep 20 21:55:59.874 INFO kablam! 553 |     let mut append_list = &mut Vec::new();
Sep 20 21:55:59.874 INFO kablam!     |         ----^^^^^^^^^^^
Sep 20 21:55:59.874 INFO kablam!     |         |
Sep 20 21:55:59.874 INFO kablam!     |         help: remove this `mut`
Sep 20 21:55:59.874 INFO kablam!     |
Sep 20 21:55:59.874 INFO kablam!     = note: #[warn(unused_mut)] on by default
Sep 20 21:55:59.874 INFO kablam! 
Sep 20 21:55:59.970 INFO kablam! warning: variable does not need to be mutable
Sep 20 21:55:59.970 INFO kablam!   --> src/execute/exec_commands.rs:36:13
Sep 20 21:55:59.970 INFO kablam!    |
Sep 20 21:55:59.970 INFO kablam! 36 |         let mut command_buffer = &mut String::with_capacity(64);
Sep 20 21:55:59.970 INFO kablam!    |             ----^^^^^^^^^^^^^^
Sep 20 21:55:59.970 INFO kablam!    |             |
Sep 20 21:55:59.970 INFO kablam!    |             help: remove this `mut`
Sep 20 21:55:59.970 INFO kablam! 
Sep 20 21:56:00.038 INFO kablam! warning: variable does not need to be mutable
Sep 20 21:56:00.038 INFO kablam!   --> src/execute/pipe.rs:41:17
Sep 20 21:56:00.038 INFO kablam!    |
Sep 20 21:56:00.038 INFO kablam! 41 |             let mut stdout = child.stdout.as_mut().expect("unable to open stdout of child");
Sep 20 21:56:00.038 INFO kablam!    |                 ----^^^^^^
Sep 20 21:56:00.038 INFO kablam!    |                 |
Sep 20 21:56:00.038 INFO kablam!    |                 help: remove this `mut`
Sep 20 21:56:00.038 INFO kablam! 
Sep 20 21:56:00.298 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 4.65s
Sep 20 21:56:00.302 INFO kablam! su: No module specific data is present
Sep 20 21:56:01.405 INFO running `"docker" "rm" "-f" "d490d560639b39a6dbbd18b7159748638fa19d3439804bb95ca2d1a727e6f27e"`
Sep 20 21:56:01.528 INFO blam! d490d560639b39a6dbbd18b7159748638fa19d3439804bb95ca2d1a727e6f27e