Sep 20 00:59:16.242 INFO checking lewton-0.5.2 against try#135b4cd023a753409d01e43b0f23d22a899feeeb for pr-54352
Sep 20 00:59:16.242 INFO running: cargo +135b4cd023a753409d01e43b0f23d22a899feeeb-alt check --frozen --all --all-targets
Sep 20 00:59:16.242 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-6/pr-54352/try#135b4cd023a753409d01e43b0f23d22a899feeeb:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-54352/worker-6/try#135b4cd023a753409d01e43b0f23d22a899feeeb:/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 +135b4cd023a753409d01e43b0f23d22a899feeeb-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-m" "1536M" "crater"`
Sep 20 00:59:16.445 INFO blam! efe56a648e22c2a10a41caa4373de14b8044fb8cb06534d02e35d21631eac8b5
Sep 20 00:59:16.445 INFO running `"docker" "start" "-a" "efe56a648e22c2a10a41caa4373de14b8044fb8cb06534d02e35d21631eac8b5"`
Sep 20 00:59:17.237 INFO kablam! usermod: no changes
Sep 20 00:59:17.362 INFO kablam!     Checking stable_deref_trait v1.1.1
Sep 20 00:59:17.362 INFO kablam!     Checking ogg v0.4.1
Sep 20 00:59:17.362 INFO kablam!    Compiling rental-impl v0.4.15
Sep 20 00:59:18.018 INFO kablam!     Checking lewton v0.5.2 (/source)
Sep 20 00:59:19.718 INFO kablam! warning: variable does not need to be mutable
Sep 20 00:59:19.718 INFO kablam!   --> src/huffman_tree.rs:96:8
Sep 20 00:59:19.718 INFO kablam!    |
Sep 20 00:59:19.718 INFO kablam! 96 |             let mut left = self.l.as_mut().unwrap();
Sep 20 00:59:19.718 INFO kablam!    |                 ----^^^^
Sep 20 00:59:19.718 INFO kablam!    |                 |
Sep 20 00:59:19.719 INFO kablam!    |                 help: remove this `mut`
Sep 20 00:59:19.719 INFO kablam!    |
Sep 20 00:59:19.719 INFO kablam!    = note: #[warn(unused_mut)] on by default
Sep 20 00:59:19.719 INFO kablam! 
Sep 20 00:59:19.762 INFO kablam! warning: variable does not need to be mutable
Sep 20 00:59:19.762 INFO kablam!    --> src/imdct.rs:379:7
Sep 20 00:59:19.762 INFO kablam!     |
Sep 20 00:59:19.762 INFO kablam! 379 |         let mut u = &mut *buffer;
Sep 20 00:59:19.762 INFO kablam!     |             ----^
Sep 20 00:59:19.762 INFO kablam!     |             |
Sep 20 00:59:19.762 INFO kablam!     |             help: remove this `mut`
Sep 20 00:59:19.762 INFO kablam! 
Sep 20 00:59:19.762 INFO kablam! warning: variable does not need to be mutable
Sep 20 00:59:19.762 INFO kablam!    --> src/imdct.rs:380:7
Sep 20 00:59:19.762 INFO kablam!     |
Sep 20 00:59:19.762 INFO kablam! 380 |         let mut v = &mut *buf2;
Sep 20 00:59:19.762 INFO kablam!     |             ----^
Sep 20 00:59:19.762 INFO kablam!     |             |
Sep 20 00:59:19.762 INFO kablam!     |             help: remove this `mut`
Sep 20 00:59:19.762 INFO kablam! 
Sep 20 00:59:26.231 INFO kablam!     Checking rental v0.4.16
Sep 20 00:59:26.672 INFO kablam!     Checking al-sys v0.4.1
Sep 20 00:59:27.823 INFO kablam!     Checking alto v1.1.4
Sep 20 00:59:34.922 INFO kablam! warning: unused `std::result::Result` which must be used
Sep 20 00:59:34.922 INFO kablam!   --> examples/player.rs:66:3
Sep 20 00:59:34.922 INFO kablam!    |
Sep 20 00:59:34.922 INFO kablam! 66 |         str_src.queue_buffer(buf);
Sep 20 00:59:34.922 INFO kablam!    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^
Sep 20 00:59:34.922 INFO kablam!    |
Sep 20 00:59:34.922 INFO kablam!    = note: #[warn(unused_must_use)] on by default
Sep 20 00:59:34.922 INFO kablam!    = note: this `Result` may be an `Err` variant, which should be handled
Sep 20 00:59:34.922 INFO kablam! 
Sep 20 00:59:36.358 INFO kablam! error: variable does not need to be mutable
Sep 20 00:59:36.358 INFO kablam!   --> src/huffman_tree.rs:96:8
Sep 20 00:59:36.358 INFO kablam!    |
Sep 20 00:59:36.358 INFO kablam! 96 |             let mut left = self.l.as_mut().unwrap();
Sep 20 00:59:36.358 INFO kablam!    |                 ----^^^^
Sep 20 00:59:36.358 INFO kablam!    |                 |
Sep 20 00:59:36.358 INFO kablam!    |                 help: remove this `mut`
Sep 20 00:59:36.358 INFO kablam!    |
Sep 20 00:59:36.358 INFO kablam! note: lint level defined here
Sep 20 00:59:36.358 INFO kablam!   --> src/lib.rs:10:24
Sep 20 00:59:36.358 INFO kablam!    |
Sep 20 00:59:36.358 INFO kablam! 10 | #![cfg_attr(test, deny(warnings))]
Sep 20 00:59:36.358 INFO kablam!    |                        ^^^^^^^^
Sep 20 00:59:36.358 INFO kablam!    = note: #[deny(unused_mut)] implied by #[deny(warnings)]
Sep 20 00:59:36.358 INFO kablam! 
Sep 20 00:59:36.393 INFO kablam! error: variable does not need to be mutable
Sep 20 00:59:36.393 INFO kablam!    --> src/imdct.rs:379:7
Sep 20 00:59:36.393 INFO kablam!     |
Sep 20 00:59:36.393 INFO kablam! 379 |         let mut u = &mut *buffer;
Sep 20 00:59:36.393 INFO kablam!     |             ----^
Sep 20 00:59:36.393 INFO kablam!     |             |
Sep 20 00:59:36.393 INFO kablam!     |             help: remove this `mut`
Sep 20 00:59:36.393 INFO kablam! 
Sep 20 00:59:36.393 INFO kablam! error: variable does not need to be mutable
Sep 20 00:59:36.393 INFO kablam!    --> src/imdct.rs:380:7
Sep 20 00:59:36.393 INFO kablam!     |
Sep 20 00:59:36.393 INFO kablam! 380 |         let mut v = &mut *buf2;
Sep 20 00:59:36.393 INFO kablam!     |             ----^
Sep 20 00:59:36.393 INFO kablam!     |             |
Sep 20 00:59:36.393 INFO kablam!     |             help: remove this `mut`
Sep 20 00:59:36.393 INFO kablam! 
Sep 20 00:59:36.622 INFO kablam! error: aborting due to 3 previous errors
Sep 20 00:59:36.622 INFO kablam! 
Sep 20 00:59:36.629 INFO kablam! error: Could not compile `lewton`.
Sep 20 00:59:36.629 INFO kablam! 
Sep 20 00:59:36.629 INFO kablam! To learn more, run the command again with --verbose.
Sep 20 00:59:36.633 INFO kablam! su: No module specific data is present
Sep 20 00:59:37.410 INFO running `"docker" "rm" "-f" "efe56a648e22c2a10a41caa4373de14b8044fb8cb06534d02e35d21631eac8b5"`
Sep 20 00:59:37.541 INFO blam! efe56a648e22c2a10a41caa4373de14b8044fb8cb06534d02e35d21631eac8b5