Nov 28 14:23:20.004 INFO checking BookOwl/trusty against try#db42d4dad33013eba11ef37342ad9f614e5652b8 for pr-56074
Nov 28 14:23:20.004 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56074/worker-4/try#db42d4dad33013eba11ef37342ad9f614e5652b8:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-4/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 14:23:20.293 INFO [stdout] eed19864089bcd8deb82ff7ba09d2032ea534d07bcdc06acc165ae3543788b13
Nov 28 14:23:20.298 INFO running `"docker" "start" "-a" "eed19864089bcd8deb82ff7ba09d2032ea534d07bcdc06acc165ae3543788b13"`
Nov 28 14:23:21.124 INFO [stderr] usermod: no changes
Nov 28 14:23:21.167 INFO [stderr]     Checking left-pad v1.0.1
Nov 28 14:23:21.172 INFO [stderr]     Checking termion v1.1.4
Nov 28 14:23:22.515 INFO [stderr]     Checking trusty v0.1.0 (/source)
Nov 28 14:23:23.447 INFO [stderr] warning: variable does not need to be mutable
Nov 28 14:23:23.448 INFO [stderr]   --> src/backend.rs:62:17
Nov 28 14:23:23.448 INFO [stderr]    |
Nov 28 14:23:23.448 INFO [stderr] 62 |             let mut buf = self.current_buffer_mut();
Nov 28 14:23:23.448 INFO [stderr]    |                 ----^^^
Nov 28 14:23:23.448 INFO [stderr]    |                 |
Nov 28 14:23:23.448 INFO [stderr]    |                 help: remove this `mut`
Nov 28 14:23:23.449 INFO [stderr]    |
Nov 28 14:23:23.449 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Nov 28 14:23:23.449 INFO [stderr] 
Nov 28 14:23:23.449 INFO [stderr] warning: variable does not need to be mutable
Nov 28 14:23:23.449 INFO [stderr]   --> src/backend.rs:66:13
Nov 28 14:23:23.449 INFO [stderr]    |
Nov 28 14:23:23.449 INFO [stderr] 66 |         let mut cursor = self.cursor_mut();
Nov 28 14:23:23.449 INFO [stderr]    |             ----^^^^^^
Nov 28 14:23:23.449 INFO [stderr]    |             |
Nov 28 14:23:23.449 INFO [stderr]    |             help: remove this `mut`
Nov 28 14:23:23.449 INFO [stderr] 
Nov 28 14:23:23.747 INFO [stderr] warning: variable does not need to be mutable
Nov 28 14:23:23.748 INFO [stderr]   --> src/backend.rs:62:17
Nov 28 14:23:23.749 INFO [stderr]    |
Nov 28 14:23:23.749 INFO [stderr] 62 |             let mut buf = self.current_buffer_mut();
Nov 28 14:23:23.750 INFO [stderr]    |                 ----^^^
Nov 28 14:23:23.751 INFO [stderr]    |                 |
Nov 28 14:23:23.751 INFO [stderr]    |                 help: remove this `mut`
Nov 28 14:23:23.752 INFO [stderr]    |
Nov 28 14:23:23.753 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Nov 28 14:23:23.753 INFO [stderr] 
Nov 28 14:23:23.754 INFO [stderr] warning: variable does not need to be mutable
Nov 28 14:23:23.755 INFO [stderr]   --> src/backend.rs:66:13
Nov 28 14:23:23.755 INFO [stderr]    |
Nov 28 14:23:23.756 INFO [stderr] 66 |         let mut cursor = self.cursor_mut();
Nov 28 14:23:23.756 INFO [stderr]    |             ----^^^^^^
Nov 28 14:23:23.757 INFO [stderr]    |             |
Nov 28 14:23:23.758 INFO [stderr]    |             help: remove this `mut`
Nov 28 14:23:23.758 INFO [stderr] 
Nov 28 14:23:24.636 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.49s
Nov 28 14:23:24.639 INFO [stderr] su: No module specific data is present
Nov 28 14:23:25.362 INFO running `"docker" "inspect" "eed19864089bcd8deb82ff7ba09d2032ea534d07bcdc06acc165ae3543788b13"`
Nov 28 14:23:25.502 INFO running `"docker" "rm" "-f" "eed19864089bcd8deb82ff7ba09d2032ea534d07bcdc06acc165ae3543788b13"`
Nov 28 14:23:25.652 INFO [stdout] eed19864089bcd8deb82ff7ba09d2032ea534d07bcdc06acc165ae3543788b13