Sep 06 04:37:29.954 INFO checking lewton-0.5.2 against master#1c2e17f4e3a2070a7f703f51e29c1c388ef703b6 for pr-53854
Sep 06 04:37:29.954 INFO running: cargo +1c2e17f4e3a2070a7f703f51e29c1c388ef703b6-alt check --frozen --all --all-targets
Sep 06 04:37:29.954 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-5/pr-53854/master#1c2e17f4e3a2070a7f703f51e29c1c388ef703b6:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-53854/worker-5/master#1c2e17f4e3a2070a7f703f51e29c1c388ef703b6:/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 +1c2e17f4e3a2070a7f703f51e29c1c388ef703b6-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-m" "2G" "crater"`
Sep 06 04:37:30.067 INFO blam! 86cea53b43dbfd0f79af7701b8a5ac1306af194aa35999a73cfbc1ae61b0553d
Sep 06 04:37:30.069 INFO running `"docker" "start" "-a" "86cea53b43dbfd0f79af7701b8a5ac1306af194aa35999a73cfbc1ae61b0553d"`
Sep 06 04:37:30.879 INFO kablam! usermod: no changes
Sep 06 04:37:31.018 INFO kablam!     Checking stable_deref_trait v1.1.1
Sep 06 04:37:31.018 INFO kablam!    Compiling syn v0.11.11
Sep 06 04:37:31.018 INFO kablam!     Checking lewton v0.5.2 (file:///source)
Sep 06 04:37:32.749 INFO kablam! warning: variable does not need to be mutable
Sep 06 04:37:32.749 INFO kablam!   --> src/huffman_tree.rs:96:8
Sep 06 04:37:32.749 INFO kablam!    |
Sep 06 04:37:32.749 INFO kablam! 96 |             let mut left = self.l.as_mut().unwrap();
Sep 06 04:37:32.749 INFO kablam!    |                 ----^^^^
Sep 06 04:37:32.749 INFO kablam!    |                 |
Sep 06 04:37:32.749 INFO kablam!    |                 help: remove this `mut`
Sep 06 04:37:32.749 INFO kablam!    |
Sep 06 04:37:32.749 INFO kablam!    = note: #[warn(unused_mut)] on by default
Sep 06 04:37:32.749 INFO kablam! 
Sep 06 04:37:32.812 INFO kablam! warning: variable does not need to be mutable
Sep 06 04:37:32.812 INFO kablam!    --> src/imdct.rs:379:7
Sep 06 04:37:32.813 INFO kablam!     |
Sep 06 04:37:32.813 INFO kablam! 379 |         let mut u = &mut *buffer;
Sep 06 04:37:32.813 INFO kablam!     |             ----^
Sep 06 04:37:32.813 INFO kablam!     |             |
Sep 06 04:37:32.813 INFO kablam!     |             help: remove this `mut`
Sep 06 04:37:32.813 INFO kablam! 
Sep 06 04:37:32.813 INFO kablam! warning: variable does not need to be mutable
Sep 06 04:37:32.813 INFO kablam!    --> src/imdct.rs:380:7
Sep 06 04:37:32.813 INFO kablam!     |
Sep 06 04:37:32.813 INFO kablam! 380 |         let mut v = &mut *buf2;
Sep 06 04:37:32.813 INFO kablam!     |             ----^
Sep 06 04:37:32.813 INFO kablam!     |             |
Sep 06 04:37:32.813 INFO kablam!     |             help: remove this `mut`
Sep 06 04:37:32.813 INFO kablam! 
Sep 06 04:37:39.199 INFO kablam!    Compiling rental-impl v0.4.15
Sep 06 04:37:46.602 INFO kablam!     Checking rental v0.4.16
Sep 06 04:37:47.235 INFO kablam!     Checking al-sys v0.4.1
Sep 06 04:37:48.756 INFO kablam!     Checking alto v1.1.4
Sep 06 04:37:56.110 INFO kablam! warning: unused `std::result::Result` which must be used
Sep 06 04:37:56.110 INFO kablam!   --> examples/player.rs:66:3
Sep 06 04:37:56.110 INFO kablam!    |
Sep 06 04:37:56.110 INFO kablam! 66 |         str_src.queue_buffer(buf);
Sep 06 04:37:56.110 INFO kablam!    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^
Sep 06 04:37:56.110 INFO kablam!    |
Sep 06 04:37:56.110 INFO kablam!    = note: #[warn(unused_must_use)] on by default
Sep 06 04:37:56.110 INFO kablam!    = note: this `Result` may be an `Err` variant, which should be handled
Sep 06 04:37:56.110 INFO kablam! 
Sep 06 04:37:57.532 INFO kablam! error: variable does not need to be mutable
Sep 06 04:37:57.532 INFO kablam!   --> src/huffman_tree.rs:96:8
Sep 06 04:37:57.532 INFO kablam!    |
Sep 06 04:37:57.532 INFO kablam! 96 |             let mut left = self.l.as_mut().unwrap();
Sep 06 04:37:57.532 INFO kablam!    |                 ----^^^^
Sep 06 04:37:57.532 INFO kablam!    |                 |
Sep 06 04:37:57.532 INFO kablam!    |                 help: remove this `mut`
Sep 06 04:37:57.532 INFO kablam!    |
Sep 06 04:37:57.532 INFO kablam! note: lint level defined here
Sep 06 04:37:57.532 INFO kablam!   --> src/lib.rs:10:24
Sep 06 04:37:57.532 INFO kablam!    |
Sep 06 04:37:57.532 INFO kablam! 10 | #![cfg_attr(test, deny(warnings))]
Sep 06 04:37:57.532 INFO kablam!    |                        ^^^^^^^^
Sep 06 04:37:57.532 INFO kablam!    = note: #[deny(unused_mut)] implied by #[deny(warnings)]
Sep 06 04:37:57.532 INFO kablam! 
Sep 06 04:37:57.573 INFO kablam! error: variable does not need to be mutable
Sep 06 04:37:57.573 INFO kablam!    --> src/imdct.rs:379:7
Sep 06 04:37:57.573 INFO kablam!     |
Sep 06 04:37:57.573 INFO kablam! 379 |         let mut u = &mut *buffer;
Sep 06 04:37:57.573 INFO kablam!     |             ----^
Sep 06 04:37:57.574 INFO kablam!     |             |
Sep 06 04:37:57.574 INFO kablam!     |             help: remove this `mut`
Sep 06 04:37:57.574 INFO kablam! 
Sep 06 04:37:57.574 INFO kablam! error: variable does not need to be mutable
Sep 06 04:37:57.574 INFO kablam!    --> src/imdct.rs:380:7
Sep 06 04:37:57.574 INFO kablam!     |
Sep 06 04:37:57.574 INFO kablam! 380 |         let mut v = &mut *buf2;
Sep 06 04:37:57.574 INFO kablam!     |             ----^
Sep 06 04:37:57.574 INFO kablam!     |             |
Sep 06 04:37:57.574 INFO kablam!     |             help: remove this `mut`
Sep 06 04:37:57.574 INFO kablam! 
Sep 06 04:37:57.863 INFO kablam! error: aborting due to 3 previous errors
Sep 06 04:37:57.865 INFO kablam! 
Sep 06 04:37:57.875 INFO kablam! error: Could not compile `lewton`.
Sep 06 04:37:57.875 INFO kablam! 
Sep 06 04:37:57.875 INFO kablam! To learn more, run the command again with --verbose.
Sep 06 04:37:57.877 INFO kablam! su: No module specific data is present
Sep 06 04:37:58.692 INFO running `"docker" "rm" "-f" "86cea53b43dbfd0f79af7701b8a5ac1306af194aa35999a73cfbc1ae61b0553d"`
Sep 06 04:37:58.801 INFO blam! 86cea53b43dbfd0f79af7701b8a5ac1306af194aa35999a73cfbc1ae61b0553d