Dec 05 03:16:42.702 INFO checking BookOwl/trusty against master#c8ae2de8363be088604ffa2ccba84ff7ad7250bc for pr-56481
Dec 05 03:16:42.703 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56481/worker-7/master#c8ae2de8363be088604ffa2ccba84ff7ad7250bc:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-7/pr-56481/master#c8ae2de8363be088604ffa2ccba84ff7ad7250bc:/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 +c8ae2de8363be088604ffa2ccba84ff7ad7250bc-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"`
Dec 05 03:16:43.111 INFO [stdout] 6ed45adb1d9dd4442b12fe799d49c817a5fbc1076c008a6b4bc41b0bc5301b9c
Dec 05 03:16:43.116 INFO running `"docker" "start" "-a" "6ed45adb1d9dd4442b12fe799d49c817a5fbc1076c008a6b4bc41b0bc5301b9c"`
Dec 05 03:16:44.272 INFO [stderr] usermod: no changes
Dec 05 03:16:44.339 INFO [stderr]     Checking left-pad v1.0.1
Dec 05 03:16:44.339 INFO [stderr]     Checking termion v1.1.4
Dec 05 03:16:45.323 INFO [stderr]     Checking trusty v0.1.0 (/source)
Dec 05 03:16:46.091 INFO [stderr] warning: variable does not need to be mutable
Dec 05 03:16:46.091 INFO [stderr]   --> src/backend.rs:62:17
Dec 05 03:16:46.091 INFO [stderr]    |
Dec 05 03:16:46.091 INFO [stderr] 62 |             let mut buf = self.current_buffer_mut();
Dec 05 03:16:46.091 INFO [stderr]    |                 ----^^^
Dec 05 03:16:46.091 INFO [stderr]    |                 |
Dec 05 03:16:46.091 INFO [stderr]    |                 help: remove this `mut`
Dec 05 03:16:46.091 INFO [stderr]    |
Dec 05 03:16:46.091 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 05 03:16:46.091 INFO [stderr] 
Dec 05 03:16:46.091 INFO [stderr] warning: variable does not need to be mutable
Dec 05 03:16:46.091 INFO [stderr]   --> src/backend.rs:66:13
Dec 05 03:16:46.091 INFO [stderr]    |
Dec 05 03:16:46.091 INFO [stderr] 66 |         let mut cursor = self.cursor_mut();
Dec 05 03:16:46.091 INFO [stderr]    |             ----^^^^^^
Dec 05 03:16:46.091 INFO [stderr]    |             |
Dec 05 03:16:46.091 INFO [stderr]    |             help: remove this `mut`
Dec 05 03:16:46.091 INFO [stderr] 
Dec 05 03:16:46.225 INFO [stderr] warning: variable does not need to be mutable
Dec 05 03:16:46.225 INFO [stderr]   --> src/backend.rs:62:17
Dec 05 03:16:46.225 INFO [stderr]    |
Dec 05 03:16:46.225 INFO [stderr] 62 |             let mut buf = self.current_buffer_mut();
Dec 05 03:16:46.225 INFO [stderr]    |                 ----^^^
Dec 05 03:16:46.225 INFO [stderr]    |                 |
Dec 05 03:16:46.225 INFO [stderr]    |                 help: remove this `mut`
Dec 05 03:16:46.225 INFO [stderr]    |
Dec 05 03:16:46.225 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 05 03:16:46.225 INFO [stderr] 
Dec 05 03:16:46.225 INFO [stderr] warning: variable does not need to be mutable
Dec 05 03:16:46.225 INFO [stderr]   --> src/backend.rs:66:13
Dec 05 03:16:46.225 INFO [stderr]    |
Dec 05 03:16:46.225 INFO [stderr] 66 |         let mut cursor = self.cursor_mut();
Dec 05 03:16:46.225 INFO [stderr]    |             ----^^^^^^
Dec 05 03:16:46.225 INFO [stderr]    |             |
Dec 05 03:16:46.225 INFO [stderr]    |             help: remove this `mut`
Dec 05 03:16:46.225 INFO [stderr] 
Dec 05 03:16:46.987 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.68s
Dec 05 03:16:46.990 INFO [stderr] su: No module specific data is present
Dec 05 03:16:47.409 INFO running `"docker" "inspect" "6ed45adb1d9dd4442b12fe799d49c817a5fbc1076c008a6b4bc41b0bc5301b9c"`
Dec 05 03:16:47.579 INFO running `"docker" "rm" "-f" "6ed45adb1d9dd4442b12fe799d49c817a5fbc1076c008a6b4bc41b0bc5301b9c"`
Dec 05 03:16:47.915 INFO [stdout] 6ed45adb1d9dd4442b12fe799d49c817a5fbc1076c008a6b4bc41b0bc5301b9c