Nov 30 11:53:19.089 INFO checking BookOwl/trusty against master#a49316ddc99d9d595193557fc899f6c52e4d9af9 for pr-56323
Nov 30 11:53:19.089 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56323/worker-5/master#a49316ddc99d9d595193557fc899f6c52e4d9af9:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-5/pr-56323/master#a49316ddc99d9d595193557fc899f6c52e4d9af9:/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 +a49316ddc99d9d595193557fc899f6c52e4d9af9-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 30 11:53:19.542 INFO [stdout] 882ccf0e82528be0087d64fe6bb97e067162591ed56ecbf8aae24535b3b6ea52
Nov 30 11:53:19.544 INFO running `"docker" "start" "-a" "882ccf0e82528be0087d64fe6bb97e067162591ed56ecbf8aae24535b3b6ea52"`
Nov 30 11:53:20.650 INFO [stderr] usermod: no changes
Nov 30 11:53:20.712 INFO [stderr]     Checking left-pad v1.0.1
Nov 30 11:53:20.714 INFO [stderr]     Checking termion v1.1.4
Nov 30 11:53:21.872 INFO [stderr]     Checking trusty v0.1.0 (/source)
Nov 30 11:53:22.564 INFO [stderr] warning: variable does not need to be mutable
Nov 30 11:53:22.564 INFO [stderr]   --> src/backend.rs:62:17
Nov 30 11:53:22.564 INFO [stderr]    |
Nov 30 11:53:22.564 INFO [stderr] 62 |             let mut buf = self.current_buffer_mut();
Nov 30 11:53:22.564 INFO [stderr]    |                 ----^^^
Nov 30 11:53:22.564 INFO [stderr]    |                 |
Nov 30 11:53:22.564 INFO [stderr]    |                 help: remove this `mut`
Nov 30 11:53:22.564 INFO [stderr]    |
Nov 30 11:53:22.564 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Nov 30 11:53:22.564 INFO [stderr] 
Nov 30 11:53:22.564 INFO [stderr] warning: variable does not need to be mutable
Nov 30 11:53:22.564 INFO [stderr]   --> src/backend.rs:66:13
Nov 30 11:53:22.564 INFO [stderr]    |
Nov 30 11:53:22.564 INFO [stderr] 66 |         let mut cursor = self.cursor_mut();
Nov 30 11:53:22.564 INFO [stderr]    |             ----^^^^^^
Nov 30 11:53:22.564 INFO [stderr]    |             |
Nov 30 11:53:22.564 INFO [stderr]    |             help: remove this `mut`
Nov 30 11:53:22.564 INFO [stderr] 
Nov 30 11:53:23.840 INFO [stderr] warning: variable does not need to be mutable
Nov 30 11:53:23.840 INFO [stderr]   --> src/backend.rs:62:17
Nov 30 11:53:23.840 INFO [stderr]    |
Nov 30 11:53:23.840 INFO [stderr] 62 |             let mut buf = self.current_buffer_mut();
Nov 30 11:53:23.840 INFO [stderr]    |                 ----^^^
Nov 30 11:53:23.840 INFO [stderr]    |                 |
Nov 30 11:53:23.840 INFO [stderr]    |                 help: remove this `mut`
Nov 30 11:53:23.840 INFO [stderr]    |
Nov 30 11:53:23.840 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Nov 30 11:53:23.840 INFO [stderr] 
Nov 30 11:53:23.840 INFO [stderr] warning: variable does not need to be mutable
Nov 30 11:53:23.840 INFO [stderr]   --> src/backend.rs:66:13
Nov 30 11:53:23.840 INFO [stderr]    |
Nov 30 11:53:23.840 INFO [stderr] 66 |         let mut cursor = self.cursor_mut();
Nov 30 11:53:23.840 INFO [stderr]    |             ----^^^^^^
Nov 30 11:53:23.840 INFO [stderr]    |             |
Nov 30 11:53:23.840 INFO [stderr]    |             help: remove this `mut`
Nov 30 11:53:23.840 INFO [stderr] 
Nov 30 11:53:23.974 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.29s
Nov 30 11:53:23.977 INFO [stderr] su: No module specific data is present
Nov 30 11:53:25.058 INFO running `"docker" "inspect" "882ccf0e82528be0087d64fe6bb97e067162591ed56ecbf8aae24535b3b6ea52"`
Nov 30 11:53:25.450 INFO running `"docker" "rm" "-f" "882ccf0e82528be0087d64fe6bb97e067162591ed56ecbf8aae24535b3b6ea52"`
Nov 30 11:53:25.728 INFO [stdout] 882ccf0e82528be0087d64fe6bb97e067162591ed56ecbf8aae24535b3b6ea52