Nov 28 17:06:26.382 INFO checking tap-0.3.0 against try#db42d4dad33013eba11ef37342ad9f614e5652b8 for pr-56074
Nov 28 17:06:26.382 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56074/worker-2/try#db42d4dad33013eba11ef37342ad9f614e5652b8:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-2/pr-56074/try#db42d4dad33013eba11ef37342ad9f614e5652b8:/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 +db42d4dad33013eba11ef37342ad9f614e5652b8-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 17:06:26.642 INFO [stdout] 8e978a45950460b2ae7d6644672a534b9c58568224fa4f1c61c36be691f060f7
Nov 28 17:06:26.643 INFO running `"docker" "start" "-a" "8e978a45950460b2ae7d6644672a534b9c58568224fa4f1c61c36be691f060f7"`
Nov 28 17:06:27.493 INFO [stderr] usermod: no changes
Nov 28 17:06:27.565 INFO [stderr]     Checking tap v0.3.0 (/source)
Nov 28 17:06:28.228 INFO [stderr] warning: variable does not need to be mutable
Nov 28 17:06:28.228 INFO [stderr]   --> src/lib.rs:78:21
Nov 28 17:06:28.228 INFO [stderr]    |
Nov 28 17:06:28.228 INFO [stderr] 78 |         if let Some(mut val) = self.as_mut() {
Nov 28 17:06:28.228 INFO [stderr]    |                     ----^^^
Nov 28 17:06:28.228 INFO [stderr]    |                     |
Nov 28 17:06:28.228 INFO [stderr]    |                     help: remove this `mut`
Nov 28 17:06:28.228 INFO [stderr]    |
Nov 28 17:06:28.228 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Nov 28 17:06:28.228 INFO [stderr] 
Nov 28 17:06:28.245 INFO [stderr] warning: unused `#[macro_use]` import
Nov 28 17:06:28.245 INFO [stderr]   --> src/lib.rs:14:18
Nov 28 17:06:28.245 INFO [stderr]    |
Nov 28 17:06:28.246 INFO [stderr] 14 | #[cfg_attr(test, macro_use)]
Nov 28 17:06:28.246 INFO [stderr]    |                  ^^^^^^^^^
Nov 28 17:06:28.246 INFO [stderr]    |
Nov 28 17:06:28.247 INFO [stderr]    = note: #[warn(unused_imports)] on by default
Nov 28 17:06:28.247 INFO [stderr] 
Nov 28 17:06:28.388 INFO [stderr] warning: variable does not need to be mutable
Nov 28 17:06:28.388 INFO [stderr]   --> src/lib.rs:78:21
Nov 28 17:06:28.388 INFO [stderr]    |
Nov 28 17:06:28.388 INFO [stderr] 78 |         if let Some(mut val) = self.as_mut() {
Nov 28 17:06:28.388 INFO [stderr]    |                     ----^^^
Nov 28 17:06:28.388 INFO [stderr]    |                     |
Nov 28 17:06:28.388 INFO [stderr]    |                     help: remove this `mut`
Nov 28 17:06:28.388 INFO [stderr]    |
Nov 28 17:06:28.388 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Nov 28 17:06:28.388 INFO [stderr] 
Nov 28 17:06:28.416 INFO [stderr] warning: variable does not need to be mutable
Nov 28 17:06:28.416 INFO [stderr]    --> src/lib.rs:141:33
Nov 28 17:06:28.416 INFO [stderr]     |
Nov 28 17:06:28.416 INFO [stderr] 141 |         let mutated = base.tap(|mut arr| for elt in arr.iter_mut() {
Nov 28 17:06:28.416 INFO [stderr]     |                                 ----^^^
Nov 28 17:06:28.416 INFO [stderr]     |                                 |
Nov 28 17:06:28.416 INFO [stderr]     |                                 help: remove this `mut`
Nov 28 17:06:28.416 INFO [stderr] 
Nov 28 17:06:29.040 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.52s
Nov 28 17:06:29.043 INFO [stderr] su: No module specific data is present
Nov 28 17:06:29.744 INFO running `"docker" "inspect" "8e978a45950460b2ae7d6644672a534b9c58568224fa4f1c61c36be691f060f7"`
Nov 28 17:06:29.986 INFO running `"docker" "rm" "-f" "8e978a45950460b2ae7d6644672a534b9c58568224fa4f1c61c36be691f060f7"`
Nov 28 17:06:30.312 INFO [stdout] 8e978a45950460b2ae7d6644672a534b9c58568224fa4f1c61c36be691f060f7