Sep 21 07:50:34.825 INFO checking lewton-0.5.2 against try#f1a3f05968ed2a674e09b6efa4ad9df90816e2b6 for pr-54394
Sep 21 07:50:34.825 INFO running: cargo +f1a3f05968ed2a674e09b6efa4ad9df90816e2b6-alt check --frozen --all --all-targets
Sep 21 07:50:34.825 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-5/pr-54394/try#f1a3f05968ed2a674e09b6efa4ad9df90816e2b6:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-54394/worker-5/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 21 07:50:35.046 INFO blam! ac639caf220fed5566da14ed388e681a7b664a8b81718b7a31f2319ecb362d69
Sep 21 07:50:35.048 INFO running `"docker" "start" "-a" "ac639caf220fed5566da14ed388e681a7b664a8b81718b7a31f2319ecb362d69"`
Sep 21 07:50:36.143 INFO kablam! usermod: no changes
Sep 21 07:50:36.258 INFO kablam!     Checking stable_deref_trait v1.1.1
Sep 21 07:50:36.258 INFO kablam!     Checking lewton v0.5.2 (/source)
Sep 21 07:50:36.258 INFO kablam!    Compiling rental-impl v0.4.15
Sep 21 07:50:36.258 INFO kablam!     Checking libloading v0.4.3
Sep 21 07:50:38.531 INFO kablam! warning: variable does not need to be mutable
Sep 21 07:50:38.532 INFO kablam!   --> src/huffman_tree.rs:96:8
Sep 21 07:50:38.532 INFO kablam!    |
Sep 21 07:50:38.533 INFO kablam! 96 |             let mut left = self.l.as_mut().unwrap();
Sep 21 07:50:38.533 INFO kablam!    |                 ----^^^^
Sep 21 07:50:38.533 INFO kablam!    |                 |
Sep 21 07:50:38.534 INFO kablam!    |                 help: remove this `mut`
Sep 21 07:50:38.534 INFO kablam!    |
Sep 21 07:50:38.534 INFO kablam!    = note: #[warn(unused_mut)] on by default
Sep 21 07:50:38.535 INFO kablam! 
Sep 21 07:50:38.576 INFO kablam! warning: variable does not need to be mutable
Sep 21 07:50:38.576 INFO kablam!    --> src/imdct.rs:379:7
Sep 21 07:50:38.577 INFO kablam!     |
Sep 21 07:50:38.577 INFO kablam! 379 |         let mut u = &mut *buffer;
Sep 21 07:50:38.577 INFO kablam!     |             ----^
Sep 21 07:50:38.578 INFO kablam!     |             |
Sep 21 07:50:38.578 INFO kablam!     |             help: remove this `mut`
Sep 21 07:50:38.578 INFO kablam! 
Sep 21 07:50:38.579 INFO kablam! warning: variable does not need to be mutable
Sep 21 07:50:38.579 INFO kablam!    --> src/imdct.rs:380:7
Sep 21 07:50:38.579 INFO kablam!     |
Sep 21 07:50:38.580 INFO kablam! 380 |         let mut v = &mut *buf2;
Sep 21 07:50:38.580 INFO kablam!     |             ----^
Sep 21 07:50:38.580 INFO kablam!     |             |
Sep 21 07:50:38.581 INFO kablam!     |             help: remove this `mut`
Sep 21 07:50:38.581 INFO kablam! 
Sep 21 07:50:44.774 INFO kablam!     Checking rental v0.4.16
Sep 21 07:50:45.212 INFO kablam!     Checking al-sys v0.4.1
Sep 21 07:50:46.276 INFO kablam!     Checking alto v1.1.4
Sep 21 07:50:51.509 INFO kablam! warning: unused `std::result::Result` which must be used
Sep 21 07:50:51.509 INFO kablam!   --> examples/player.rs:66:3
Sep 21 07:50:51.509 INFO kablam!    |
Sep 21 07:50:51.509 INFO kablam! 66 |         str_src.queue_buffer(buf);
Sep 21 07:50:51.509 INFO kablam!    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^
Sep 21 07:50:51.509 INFO kablam!    |
Sep 21 07:50:51.509 INFO kablam!    = note: #[warn(unused_must_use)] on by default
Sep 21 07:50:51.509 INFO kablam!    = note: this `Result` may be an `Err` variant, which should be handled
Sep 21 07:50:51.510 INFO kablam! 
Sep 21 07:50:52.554 INFO kablam! error: variable does not need to be mutable
Sep 21 07:50:52.554 INFO kablam!   --> src/huffman_tree.rs:96:8
Sep 21 07:50:52.554 INFO kablam!    |
Sep 21 07:50:52.554 INFO kablam! 96 |             let mut left = self.l.as_mut().unwrap();
Sep 21 07:50:52.554 INFO kablam!    |                 ----^^^^
Sep 21 07:50:52.554 INFO kablam!    |                 |
Sep 21 07:50:52.554 INFO kablam!    |                 help: remove this `mut`
Sep 21 07:50:52.554 INFO kablam!    |
Sep 21 07:50:52.554 INFO kablam! note: lint level defined here
Sep 21 07:50:52.554 INFO kablam!   --> src/lib.rs:10:24
Sep 21 07:50:52.554 INFO kablam!    |
Sep 21 07:50:52.554 INFO kablam! 10 | #![cfg_attr(test, deny(warnings))]
Sep 21 07:50:52.554 INFO kablam!    |                        ^^^^^^^^
Sep 21 07:50:52.554 INFO kablam!    = note: #[deny(unused_mut)] implied by #[deny(warnings)]
Sep 21 07:50:52.554 INFO kablam! 
Sep 21 07:50:52.594 INFO kablam! error: variable does not need to be mutable
Sep 21 07:50:52.594 INFO kablam!    --> src/imdct.rs:379:7
Sep 21 07:50:52.594 INFO kablam!     |
Sep 21 07:50:52.594 INFO kablam! 379 |         let mut u = &mut *buffer;
Sep 21 07:50:52.594 INFO kablam!     |             ----^
Sep 21 07:50:52.594 INFO kablam!     |             |
Sep 21 07:50:52.594 INFO kablam!     |             help: remove this `mut`
Sep 21 07:50:52.594 INFO kablam! 
Sep 21 07:50:52.594 INFO kablam! error: variable does not need to be mutable
Sep 21 07:50:52.594 INFO kablam!    --> src/imdct.rs:380:7
Sep 21 07:50:52.594 INFO kablam!     |
Sep 21 07:50:52.594 INFO kablam! 380 |         let mut v = &mut *buf2;
Sep 21 07:50:52.594 INFO kablam!     |             ----^
Sep 21 07:50:52.594 INFO kablam!     |             |
Sep 21 07:50:52.594 INFO kablam!     |             help: remove this `mut`
Sep 21 07:50:52.594 INFO kablam! 
Sep 21 07:50:52.845 INFO kablam! error: aborting due to 3 previous errors
Sep 21 07:50:52.845 INFO kablam! 
Sep 21 07:50:52.864 INFO kablam! error: Could not compile `lewton`.
Sep 21 07:50:52.864 INFO kablam! 
Sep 21 07:50:52.864 INFO kablam! To learn more, run the command again with --verbose.
Sep 21 07:50:52.867 INFO kablam! su: No module specific data is present
Sep 21 07:50:54.629 INFO running `"docker" "rm" "-f" "ac639caf220fed5566da14ed388e681a7b664a8b81718b7a31f2319ecb362d69"`
Sep 21 07:50:54.750 INFO blam! ac639caf220fed5566da14ed388e681a7b664a8b81718b7a31f2319ecb362d69