Nov 28 17:06:26.876 INFO checking tap-0.3.0 against master#0b9f19dff1347e29bf4362ab5a8fab84b43023b5 for pr-56074
Nov 28 17:06:26.876 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56074/worker-4/master#0b9f19dff1347e29bf4362ab5a8fab84b43023b5:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-4/pr-56074/master#0b9f19dff1347e29bf4362ab5a8fab84b43023b5:/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 +0b9f19dff1347e29bf4362ab5a8fab84b43023b5-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"`
Nov 28 17:06:27.176 INFO [stdout] 6b359ed0b85efc4493e728bd66ab0113e00e5c2a6f6f5e8d0eed28de9c05cc86
Nov 28 17:06:27.182 INFO running `"docker" "start" "-a" "6b359ed0b85efc4493e728bd66ab0113e00e5c2a6f6f5e8d0eed28de9c05cc86"`
Nov 28 17:06:28.444 INFO [stderr] usermod: no changes
Nov 28 17:06:28.488 INFO [stderr]     Checking tap v0.3.0 (/source)
Nov 28 17:06:29.000 INFO [stderr] warning: variable does not need to be mutable
Nov 28 17:06:29.001 INFO [stderr]   --> src/lib.rs:78:21
Nov 28 17:06:29.001 INFO [stderr]    |
Nov 28 17:06:29.001 INFO [stderr] 78 |         if let Some(mut val) = self.as_mut() {
Nov 28 17:06:29.002 INFO [stderr]    |                     ----^^^
Nov 28 17:06:29.002 INFO [stderr]    |                     |
Nov 28 17:06:29.002 INFO [stderr]    |                     help: remove this `mut`
Nov 28 17:06:29.003 INFO [stderr]    |
Nov 28 17:06:29.003 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Nov 28 17:06:29.003 INFO [stderr] 
Nov 28 17:06:29.191 INFO [stderr] warning: unused `#[macro_use]` import
Nov 28 17:06:29.192 INFO [stderr]   --> src/lib.rs:14:18
Nov 28 17:06:29.192 INFO [stderr]    |
Nov 28 17:06:29.192 INFO [stderr] 14 | #[cfg_attr(test, macro_use)]
Nov 28 17:06:29.193 INFO [stderr]    |                  ^^^^^^^^^
Nov 28 17:06:29.193 INFO [stderr]    |
Nov 28 17:06:29.193 INFO [stderr]    = note: #[warn(unused_imports)] on by default
Nov 28 17:06:29.193 INFO [stderr] 
Nov 28 17:06:29.309 INFO [stderr] warning: variable does not need to be mutable
Nov 28 17:06:29.309 INFO [stderr]   --> src/lib.rs:78:21
Nov 28 17:06:29.310 INFO [stderr]    |
Nov 28 17:06:29.311 INFO [stderr] 78 |         if let Some(mut val) = self.as_mut() {
Nov 28 17:06:29.312 INFO [stderr]    |                     ----^^^
Nov 28 17:06:29.312 INFO [stderr]    |                     |
Nov 28 17:06:29.312 INFO [stderr]    |                     help: remove this `mut`
Nov 28 17:06:29.313 INFO [stderr]    |
Nov 28 17:06:29.313 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Nov 28 17:06:29.313 INFO [stderr] 
Nov 28 17:06:29.328 INFO [stderr] warning: variable does not need to be mutable
Nov 28 17:06:29.328 INFO [stderr]    --> src/lib.rs:141:33
Nov 28 17:06:29.328 INFO [stderr]     |
Nov 28 17:06:29.328 INFO [stderr] 141 |         let mutated = base.tap(|mut arr| for elt in arr.iter_mut() {
Nov 28 17:06:29.328 INFO [stderr]     |                                 ----^^^
Nov 28 17:06:29.328 INFO [stderr]     |                                 |
Nov 28 17:06:29.328 INFO [stderr]     |                                 help: remove this `mut`
Nov 28 17:06:29.328 INFO [stderr] 
Nov 28 17:06:29.842 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.38s
Nov 28 17:06:29.851 INFO [stderr] su: No module specific data is present
Nov 28 17:06:30.573 INFO running `"docker" "inspect" "6b359ed0b85efc4493e728bd66ab0113e00e5c2a6f6f5e8d0eed28de9c05cc86"`
Nov 28 17:06:30.833 INFO running `"docker" "rm" "-f" "6b359ed0b85efc4493e728bd66ab0113e00e5c2a6f6f5e8d0eed28de9c05cc86"`
Nov 28 17:06:31.192 INFO [stdout] 6b359ed0b85efc4493e728bd66ab0113e00e5c2a6f6f5e8d0eed28de9c05cc86