Sep 01 04:32:30.275 INFO checking tap-0.3.0 against master#1114ab684fbad001c4e580326d8eb4d8c4e917d3 for pr-53831
Sep 01 04:32:30.275 INFO running: cargo +1114ab684fbad001c4e580326d8eb4d8c4e917d3-alt check --frozen --all --all-targets
Sep 01 04:32:30.275 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-3/pr-53831/master#1114ab684fbad001c4e580326d8eb4d8c4e917d3:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-53831/worker-3/master#1114ab684fbad001c4e580326d8eb4d8c4e917d3:/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=500" "-e" "CMD=cargo +1114ab684fbad001c4e580326d8eb4d8c4e917d3-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-m" "2G" "crater"`
Sep 01 04:32:30.483 INFO blam! cf1c7d13156608b71af67407cacbc7910eefa76b3c57e96589ccdfb028abc93e
Sep 01 04:32:30.490 INFO running `"docker" "start" "-a" "cf1c7d13156608b71af67407cacbc7910eefa76b3c57e96589ccdfb028abc93e"`
Sep 01 04:32:31.270 INFO kablam!     Checking tap v0.3.0 (file:///source)
Sep 01 04:32:31.568 INFO kablam! warning: variable does not need to be mutable
Sep 01 04:32:31.568 INFO kablam!   --> src/lib.rs:78:21
Sep 01 04:32:31.568 INFO kablam!    |
Sep 01 04:32:31.568 INFO kablam! 78 |         if let Some(mut val) = self.as_mut() {
Sep 01 04:32:31.568 INFO kablam!    |                     ----^^^
Sep 01 04:32:31.568 INFO kablam!    |                     |
Sep 01 04:32:31.569 INFO kablam!    |                     help: remove this `mut`
Sep 01 04:32:31.569 INFO kablam!    |
Sep 01 04:32:31.569 INFO kablam!    = note: #[warn(unused_mut)] on by default
Sep 01 04:32:31.569 INFO kablam! 
Sep 01 04:32:31.599 INFO kablam! warning: unused `#[macro_use]` import
Sep 01 04:32:31.599 INFO kablam!   --> src/lib.rs:14:18
Sep 01 04:32:31.599 INFO kablam!    |
Sep 01 04:32:31.599 INFO kablam! 14 | #[cfg_attr(test, macro_use)]
Sep 01 04:32:31.599 INFO kablam!    |                  ^^^^^^^^^^
Sep 01 04:32:31.599 INFO kablam!    |
Sep 01 04:32:31.599 INFO kablam!    = note: #[warn(unused_imports)] on by default
Sep 01 04:32:31.599 INFO kablam! 
Sep 01 04:32:31.797 INFO kablam! warning: variable does not need to be mutable
Sep 01 04:32:31.797 INFO kablam!   --> src/lib.rs:78:21
Sep 01 04:32:31.797 INFO kablam!    |
Sep 01 04:32:31.797 INFO kablam! 78 |         if let Some(mut val) = self.as_mut() {
Sep 01 04:32:31.797 INFO kablam!    |                     ----^^^
Sep 01 04:32:31.797 INFO kablam!    |                     |
Sep 01 04:32:31.797 INFO kablam!    |                     help: remove this `mut`
Sep 01 04:32:31.797 INFO kablam!    |
Sep 01 04:32:31.797 INFO kablam!    = note: #[warn(unused_mut)] on by default
Sep 01 04:32:31.797 INFO kablam! 
Sep 01 04:32:31.828 INFO kablam! warning: variable does not need to be mutable
Sep 01 04:32:31.829 INFO kablam!    --> src/lib.rs:141:33
Sep 01 04:32:31.829 INFO kablam!     |
Sep 01 04:32:31.829 INFO kablam! 141 |         let mutated = base.tap(|mut arr| for elt in arr.iter_mut() {
Sep 01 04:32:31.829 INFO kablam!     |                                 ----^^^
Sep 01 04:32:31.829 INFO kablam!     |                                 |
Sep 01 04:32:31.829 INFO kablam!     |                                 help: remove this `mut`
Sep 01 04:32:31.829 INFO kablam! 
Sep 01 04:32:32.001 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 0.75s
Sep 01 04:32:32.004 INFO kablam! su: No module specific data is present
Sep 01 04:32:32.354 INFO running `"docker" "rm" "-f" "cf1c7d13156608b71af67407cacbc7910eefa76b3c57e96589ccdfb028abc93e"`
Sep 01 04:32:32.459 INFO blam! cf1c7d13156608b71af67407cacbc7910eefa76b3c57e96589ccdfb028abc93e