Oct 13 07:39:57.981 INFO checking tap-0.3.0 against try#4021bd0b3c5815b087d6db10ce461e7e4854ade7 for pr-54977
Oct 13 07:39:57.981 INFO running `"docker" "create" "-v" "/mnt/big/crater/./work/local/target-dirs/pr-54977/worker-4/try#4021bd0b3c5815b087d6db10ce461e7e4854ade7:/target:rw,Z" "-v" "/mnt/big/crater/./work/local/test-source/worker-4/pr-54977/try#4021bd0b3c5815b087d6db10ce461e7e4854ade7:/source:ro,Z" "-v" "/mnt/big/crater/./work/local/cargo-home:/cargo-home:ro,Z" "-v" "/mnt/big/crater/./work/local/rustup-home:/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/source" "-e" "USER_ID=1000" "-e" "CMD=cargo +4021bd0b3c5815b087d6db10ce461e7e4854ade7-alt check --frozen --all --all-targets" "-e" "CARGO_TARGET_DIR=/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/cargo-home" "-e" "RUSTUP_HOME=/rustup-home" "-m" "1536M" "--network" "none" "crater"`
Oct 13 07:39:58.400 INFO blam! e529bae4afe84291f4da65ba256e7efc94048168ad15c2fbbc2ade8030f0a4e7
Oct 13 07:39:58.403 INFO running `"docker" "start" "-a" "e529bae4afe84291f4da65ba256e7efc94048168ad15c2fbbc2ade8030f0a4e7"`
Oct 13 07:39:59.988 INFO kablam! usermod: no changes
Oct 13 07:40:00.040 INFO kablam!     Checking tap v0.3.0 (/source)
Oct 13 07:40:00.749 INFO kablam! warning: variable does not need to be mutable
Oct 13 07:40:00.749 INFO kablam!   --> src/lib.rs:78:21
Oct 13 07:40:00.750 INFO kablam!    |
Oct 13 07:40:00.750 INFO kablam! 78 |         if let Some(mut val) = self.as_mut() {
Oct 13 07:40:00.750 INFO kablam!    |                     ----^^^
Oct 13 07:40:00.750 INFO kablam!    |                     |
Oct 13 07:40:00.750 INFO kablam!    |                     help: remove this `mut`
Oct 13 07:40:00.750 INFO kablam!    |
Oct 13 07:40:00.750 INFO kablam!    = note: #[warn(unused_mut)] on by default
Oct 13 07:40:00.750 INFO kablam! 
Oct 13 07:40:00.771 INFO kablam! warning: unused `#[macro_use]` import
Oct 13 07:40:00.771 INFO kablam!   --> src/lib.rs:14:18
Oct 13 07:40:00.771 INFO kablam!    |
Oct 13 07:40:00.771 INFO kablam! 14 | #[cfg_attr(test, macro_use)]
Oct 13 07:40:00.771 INFO kablam!    |                  ^^^^^^^^^^
Oct 13 07:40:00.771 INFO kablam!    |
Oct 13 07:40:00.771 INFO kablam!    = note: #[warn(unused_imports)] on by default
Oct 13 07:40:00.771 INFO kablam! 
Oct 13 07:40:01.004 INFO kablam! warning: variable does not need to be mutable
Oct 13 07:40:01.004 INFO kablam!   --> src/lib.rs:78:21
Oct 13 07:40:01.004 INFO kablam!    |
Oct 13 07:40:01.004 INFO kablam! 78 |         if let Some(mut val) = self.as_mut() {
Oct 13 07:40:01.004 INFO kablam!    |                     ----^^^
Oct 13 07:40:01.004 INFO kablam!    |                     |
Oct 13 07:40:01.004 INFO kablam!    |                     help: remove this `mut`
Oct 13 07:40:01.004 INFO kablam!    |
Oct 13 07:40:01.004 INFO kablam!    = note: #[warn(unused_mut)] on by default
Oct 13 07:40:01.004 INFO kablam! 
Oct 13 07:40:01.028 INFO kablam! warning: variable does not need to be mutable
Oct 13 07:40:01.028 INFO kablam!    --> src/lib.rs:141:33
Oct 13 07:40:01.028 INFO kablam!     |
Oct 13 07:40:01.028 INFO kablam! 141 |         let mutated = base.tap(|mut arr| for elt in arr.iter_mut() {
Oct 13 07:40:01.028 INFO kablam!     |                                 ----^^^
Oct 13 07:40:01.028 INFO kablam!     |                                 |
Oct 13 07:40:01.028 INFO kablam!     |                                 help: remove this `mut`
Oct 13 07:40:01.028 INFO kablam! 
Oct 13 07:40:01.641 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 1.63s
Oct 13 07:40:01.646 INFO kablam! su: No module specific data is present
Oct 13 07:40:02.244 INFO running `"docker" "rm" "-f" "e529bae4afe84291f4da65ba256e7efc94048168ad15c2fbbc2ade8030f0a4e7"`
Oct 13 07:40:02.517 INFO blam! e529bae4afe84291f4da65ba256e7efc94048168ad15c2fbbc2ade8030f0a4e7