Sep 17 16:18:36.845 INFO checking tap-0.2.1 against try#cfeeefe83c83bceb55d60d7e2be173db7597ed50 for pr-54033
Sep 17 16:18:36.845 INFO running: cargo +cfeeefe83c83bceb55d60d7e2be173db7597ed50-alt check --frozen --all --all-targets
Sep 17 16:18:36.845 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-0/pr-54033/try#cfeeefe83c83bceb55d60d7e2be173db7597ed50:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-54033/worker-0/try#cfeeefe83c83bceb55d60d7e2be173db7597ed50:/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 +cfeeefe83c83bceb55d60d7e2be173db7597ed50-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-m" "1536M" "crater"`
Sep 17 16:18:37.109 INFO blam! a0957aa82d0406f63f4384f698f3454f6466d992dc32fac42e0d7a4a5f47ac4c
Sep 17 16:18:37.115 INFO running `"docker" "start" "-a" "a0957aa82d0406f63f4384f698f3454f6466d992dc32fac42e0d7a4a5f47ac4c"`
Sep 17 16:18:38.090 INFO kablam! usermod: no changes
Sep 17 16:18:38.122 INFO kablam!     Checking tap v0.2.1 (/source)
Sep 17 16:18:38.283 INFO kablam! warning: unused `#[macro_use]` import
Sep 17 16:18:38.283 INFO kablam!  --> src/lib.rs:8:18
Sep 17 16:18:38.283 INFO kablam!   |
Sep 17 16:18:38.283 INFO kablam! 8 | #[cfg_attr(test, macro_use)]
Sep 17 16:18:38.283 INFO kablam!   |                  ^^^^^^^^^^
Sep 17 16:18:38.283 INFO kablam!   |
Sep 17 16:18:38.283 INFO kablam!   = note: #[warn(unused_imports)] on by default
Sep 17 16:18:38.283 INFO kablam! 
Sep 17 16:18:38.326 INFO kablam! warning: variable does not need to be mutable
Sep 17 16:18:38.326 INFO kablam!   --> src/lib.rs:72:21
Sep 17 16:18:38.326 INFO kablam!    |
Sep 17 16:18:38.326 INFO kablam! 72 |         if let Some(mut val) = self.as_mut() {
Sep 17 16:18:38.326 INFO kablam!    |                     ----^^^
Sep 17 16:18:38.326 INFO kablam!    |                     |
Sep 17 16:18:38.326 INFO kablam!    |                     help: remove this `mut`
Sep 17 16:18:38.326 INFO kablam!    |
Sep 17 16:18:38.326 INFO kablam!    = note: #[warn(unused_mut)] on by default
Sep 17 16:18:38.326 INFO kablam! 
Sep 17 16:18:38.391 INFO kablam! warning: variable does not need to be mutable
Sep 17 16:18:38.391 INFO kablam!   --> src/lib.rs:72:21
Sep 17 16:18:38.391 INFO kablam!    |
Sep 17 16:18:38.391 INFO kablam! 72 |         if let Some(mut val) = self.as_mut() {
Sep 17 16:18:38.391 INFO kablam!    |                     ----^^^
Sep 17 16:18:38.391 INFO kablam!    |                     |
Sep 17 16:18:38.391 INFO kablam!    |                     help: remove this `mut`
Sep 17 16:18:38.391 INFO kablam!    |
Sep 17 16:18:38.391 INFO kablam!    = note: #[warn(unused_mut)] on by default
Sep 17 16:18:38.391 INFO kablam! 
Sep 17 16:18:38.402 INFO kablam! warning: variable does not need to be mutable
Sep 17 16:18:38.402 INFO kablam!    --> src/lib.rs:135:33
Sep 17 16:18:38.402 INFO kablam!     |
Sep 17 16:18:38.403 INFO kablam! 135 |         let mutated = base.tap(|mut arr| for elt in arr.iter_mut() {
Sep 17 16:18:38.403 INFO kablam!     |                                 ----^^^
Sep 17 16:18:38.403 INFO kablam!     |                                 |
Sep 17 16:18:38.403 INFO kablam!     |                                 help: remove this `mut`
Sep 17 16:18:38.403 INFO kablam! 
Sep 17 16:18:38.663 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 0.55s
Sep 17 16:18:38.664 INFO kablam! su: No module specific data is present
Sep 17 16:18:39.291 INFO running `"docker" "rm" "-f" "a0957aa82d0406f63f4384f698f3454f6466d992dc32fac42e0d7a4a5f47ac4c"`
Sep 17 16:18:39.409 INFO blam! a0957aa82d0406f63f4384f698f3454f6466d992dc32fac42e0d7a4a5f47ac4c