Sep 02 09:07:50.247 INFO checking lewton-0.5.2 against try#952c7dbfa2628309f557b367929ffc17af20b332 for pr-53851
Sep 02 09:07:50.247 INFO running: cargo +952c7dbfa2628309f557b367929ffc17af20b332-alt check --frozen --all --all-targets
Sep 02 09:07:50.247 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-3/pr-53851/try#952c7dbfa2628309f557b367929ffc17af20b332:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-53851/worker-3/try#952c7dbfa2628309f557b367929ffc17af20b332:/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=500" "-e" "CMD=cargo +952c7dbfa2628309f557b367929ffc17af20b332-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-m" "2G" "crater"`
Sep 02 09:07:50.405 INFO blam! 43bc4b0b74dd87e07715b9e3cd0c1921b04b70f413f0c380483c5dbdb3f93f42
Sep 02 09:07:50.407 INFO running `"docker" "start" "-a" "43bc4b0b74dd87e07715b9e3cd0c1921b04b70f413f0c380483c5dbdb3f93f42"`
Sep 02 09:07:51.111 INFO kablam!     Checking stable_deref_trait v1.1.1
Sep 02 09:07:51.113 INFO kablam!     Checking lewton v0.5.2 (file:///source)
Sep 02 09:07:51.709 INFO kablam!     Checking rental v0.4.16
Sep 02 09:07:53.077 INFO kablam!     Checking al-sys v0.4.1
Sep 02 09:07:53.382 INFO kablam! warning: variable does not need to be mutable
Sep 02 09:07:53.382 INFO kablam!   --> src/huffman_tree.rs:96:8
Sep 02 09:07:53.382 INFO kablam!    |
Sep 02 09:07:53.382 INFO kablam! 96 |             let mut left = self.l.as_mut().unwrap();
Sep 02 09:07:53.382 INFO kablam!    |                 ----^^^^
Sep 02 09:07:53.382 INFO kablam!    |                 |
Sep 02 09:07:53.382 INFO kablam!    |                 help: remove this `mut`
Sep 02 09:07:53.383 INFO kablam!    |
Sep 02 09:07:53.383 INFO kablam!    = note: #[warn(unused_mut)] on by default
Sep 02 09:07:53.383 INFO kablam! 
Sep 02 09:07:53.449 INFO kablam! warning: variable does not need to be mutable
Sep 02 09:07:53.449 INFO kablam!    --> src/imdct.rs:379:7
Sep 02 09:07:53.449 INFO kablam!     |
Sep 02 09:07:53.449 INFO kablam! 379 |         let mut u = &mut *buffer;
Sep 02 09:07:53.449 INFO kablam!     |             ----^
Sep 02 09:07:53.449 INFO kablam!     |             |
Sep 02 09:07:53.449 INFO kablam!     |             help: remove this `mut`
Sep 02 09:07:53.449 INFO kablam! 
Sep 02 09:07:53.449 INFO kablam! warning: variable does not need to be mutable
Sep 02 09:07:53.449 INFO kablam!    --> src/imdct.rs:380:7
Sep 02 09:07:53.449 INFO kablam!     |
Sep 02 09:07:53.449 INFO kablam! 380 |         let mut v = &mut *buf2;
Sep 02 09:07:53.449 INFO kablam!     |             ----^
Sep 02 09:07:53.449 INFO kablam!     |             |
Sep 02 09:07:53.449 INFO kablam!     |             help: remove this `mut`
Sep 02 09:07:53.449 INFO kablam! 
Sep 02 09:07:55.358 INFO kablam!     Checking alto v1.1.4
Sep 02 09:08:05.096 INFO kablam! warning: unused `std::result::Result` which must be used
Sep 02 09:08:05.096 INFO kablam!   --> examples/player.rs:66:3
Sep 02 09:08:05.096 INFO kablam!    |
Sep 02 09:08:05.096 INFO kablam! 66 |         str_src.queue_buffer(buf);
Sep 02 09:08:05.096 INFO kablam!    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^
Sep 02 09:08:05.096 INFO kablam!    |
Sep 02 09:08:05.096 INFO kablam!    = note: #[warn(unused_must_use)] on by default
Sep 02 09:08:05.096 INFO kablam!    = note: this `Result` may be an `Err` variant, which should be handled
Sep 02 09:08:05.096 INFO kablam! 
Sep 02 09:08:06.727 INFO kablam! error: variable does not need to be mutable
Sep 02 09:08:06.727 INFO kablam!   --> src/huffman_tree.rs:96:8
Sep 02 09:08:06.727 INFO kablam!    |
Sep 02 09:08:06.727 INFO kablam! 96 |             let mut left = self.l.as_mut().unwrap();
Sep 02 09:08:06.727 INFO kablam!    |                 ----^^^^
Sep 02 09:08:06.727 INFO kablam!    |                 |
Sep 02 09:08:06.727 INFO kablam!    |                 help: remove this `mut`
Sep 02 09:08:06.727 INFO kablam!    |
Sep 02 09:08:06.728 INFO kablam! note: lint level defined here
Sep 02 09:08:06.728 INFO kablam!   --> src/lib.rs:10:24
Sep 02 09:08:06.728 INFO kablam!    |
Sep 02 09:08:06.728 INFO kablam! 10 | #![cfg_attr(test, deny(warnings))]
Sep 02 09:08:06.728 INFO kablam!    |                        ^^^^^^^^
Sep 02 09:08:06.728 INFO kablam!    = note: #[deny(unused_mut)] implied by #[deny(warnings)]
Sep 02 09:08:06.728 INFO kablam! 
Sep 02 09:08:06.772 INFO kablam! error: variable does not need to be mutable
Sep 02 09:08:06.772 INFO kablam!    --> src/imdct.rs:379:7
Sep 02 09:08:06.772 INFO kablam!     |
Sep 02 09:08:06.772 INFO kablam! 379 |         let mut u = &mut *buffer;
Sep 02 09:08:06.772 INFO kablam!     |             ----^
Sep 02 09:08:06.772 INFO kablam!     |             |
Sep 02 09:08:06.772 INFO kablam!     |             help: remove this `mut`
Sep 02 09:08:06.772 INFO kablam! 
Sep 02 09:08:06.772 INFO kablam! error: variable does not need to be mutable
Sep 02 09:08:06.772 INFO kablam!    --> src/imdct.rs:380:7
Sep 02 09:08:06.772 INFO kablam!     |
Sep 02 09:08:06.772 INFO kablam! 380 |         let mut v = &mut *buf2;
Sep 02 09:08:06.772 INFO kablam!     |             ----^
Sep 02 09:08:06.772 INFO kablam!     |             |
Sep 02 09:08:06.772 INFO kablam!     |             help: remove this `mut`
Sep 02 09:08:06.773 INFO kablam! 
Sep 02 09:08:07.075 INFO kablam! error: aborting due to 3 previous errors
Sep 02 09:08:07.075 INFO kablam! 
Sep 02 09:08:07.084 INFO kablam! error: Could not compile `lewton`.
Sep 02 09:08:07.084 INFO kablam! 
Sep 02 09:08:07.084 INFO kablam! To learn more, run the command again with --verbose.
Sep 02 09:08:07.086 INFO kablam! su: No module specific data is present
Sep 02 09:08:07.454 INFO running `"docker" "rm" "-f" "43bc4b0b74dd87e07715b9e3cd0c1921b04b70f413f0c380483c5dbdb3f93f42"`
Sep 02 09:08:07.571 INFO blam! 43bc4b0b74dd87e07715b9e3cd0c1921b04b70f413f0c380483c5dbdb3f93f42