Sep 17 16:18:30.810 INFO checking tap-0.3.0 against try#cfeeefe83c83bceb55d60d7e2be173db7597ed50 for pr-54033
Sep 17 16:18:30.810 INFO running: cargo +cfeeefe83c83bceb55d60d7e2be173db7597ed50-alt check --frozen --all --all-targets
Sep 17 16:18:30.810 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-7/pr-54033/try#cfeeefe83c83bceb55d60d7e2be173db7597ed50:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-54033/worker-7/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 16:18:31.343 INFO blam! 0e57fb8bf4f62fa1b1ae1f1e5327ab7db2974737c439f0ef8bc6d9a32c70414a
Sep 17 16:18:31.345 INFO running `"docker" "start" "-a" "0e57fb8bf4f62fa1b1ae1f1e5327ab7db2974737c439f0ef8bc6d9a32c70414a"`
Sep 17 16:18:32.442 INFO kablam! usermod: no changes
Sep 17 16:18:32.490 INFO kablam!     Checking tap v0.3.0 (/source)
Sep 17 16:18:32.707 INFO kablam! warning: unused `#[macro_use]` import
Sep 17 16:18:32.707 INFO kablam!   --> src/lib.rs:14:18
Sep 17 16:18:32.707 INFO kablam!    |
Sep 17 16:18:32.707 INFO kablam! 14 | #[cfg_attr(test, macro_use)]
Sep 17 16:18:32.707 INFO kablam!    |                  ^^^^^^^^^^
Sep 17 16:18:32.707 INFO kablam!    |
Sep 17 16:18:32.707 INFO kablam!    = note: #[warn(unused_imports)] on by default
Sep 17 16:18:32.707 INFO kablam! 
Sep 17 16:18:32.819 INFO kablam! warning: variable does not need to be mutable
Sep 17 16:18:32.819 INFO kablam!   --> src/lib.rs:78:21
Sep 17 16:18:32.819 INFO kablam!    |
Sep 17 16:18:32.819 INFO kablam! 78 |         if let Some(mut val) = self.as_mut() {
Sep 17 16:18:32.819 INFO kablam!    |                     ----^^^
Sep 17 16:18:32.819 INFO kablam!    |                     |
Sep 17 16:18:32.819 INFO kablam!    |                     help: remove this `mut`
Sep 17 16:18:32.819 INFO kablam!    |
Sep 17 16:18:32.819 INFO kablam!    = note: #[warn(unused_mut)] on by default
Sep 17 16:18:32.819 INFO kablam! 
Sep 17 16:18:32.865 INFO kablam! warning: variable does not need to be mutable
Sep 17 16:18:32.865 INFO kablam!   --> src/lib.rs:78:21
Sep 17 16:18:32.866 INFO kablam!    |
Sep 17 16:18:32.866 INFO kablam! 78 |         if let Some(mut val) = self.as_mut() {
Sep 17 16:18:32.866 INFO kablam!    |                     ----^^^
Sep 17 16:18:32.866 INFO kablam!    |                     |
Sep 17 16:18:32.866 INFO kablam!    |                     help: remove this `mut`
Sep 17 16:18:32.866 INFO kablam!    |
Sep 17 16:18:32.866 INFO kablam!    = note: #[warn(unused_mut)] on by default
Sep 17 16:18:32.866 INFO kablam! 
Sep 17 16:18:32.882 INFO kablam! warning: variable does not need to be mutable
Sep 17 16:18:32.882 INFO kablam!    --> src/lib.rs:141:33
Sep 17 16:18:32.882 INFO kablam!     |
Sep 17 16:18:32.882 INFO kablam! 141 |         let mutated = base.tap(|mut arr| for elt in arr.iter_mut() {
Sep 17 16:18:32.882 INFO kablam!     |                                 ----^^^
Sep 17 16:18:32.882 INFO kablam!     |                                 |
Sep 17 16:18:32.882 INFO kablam!     |                                 help: remove this `mut`
Sep 17 16:18:32.883 INFO kablam! 
Sep 17 16:18:33.259 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 0.78s
Sep 17 16:18:33.262 INFO kablam! su: No module specific data is present
Sep 17 16:18:34.224 INFO running `"docker" "rm" "-f" "0e57fb8bf4f62fa1b1ae1f1e5327ab7db2974737c439f0ef8bc6d9a32c70414a"`
Sep 17 16:18:34.495 INFO blam! 0e57fb8bf4f62fa1b1ae1f1e5327ab7db2974737c439f0ef8bc6d9a32c70414a