Nov 30 11:53:16.985 INFO checking BookOwl/trusty against try#32252761328f59ccfadb1bafb8148c685bc830b3 for pr-56323
Nov 30 11:53:16.985 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56323/worker-3/try#32252761328f59ccfadb1bafb8148c685bc830b3:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-3/pr-56323/try#32252761328f59ccfadb1bafb8148c685bc830b3:/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 +32252761328f59ccfadb1bafb8148c685bc830b3-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 11:53:17.244 INFO [stdout] 7f7d5cb4c977cda0428829698ebf1de2e3e783e9a1ab757d5bb97bdb0e84cdfe
Nov 30 11:53:17.247 INFO running `"docker" "start" "-a" "7f7d5cb4c977cda0428829698ebf1de2e3e783e9a1ab757d5bb97bdb0e84cdfe"`
Nov 30 11:53:17.744 INFO [stderr] usermod: no changes
Nov 30 11:53:17.794 INFO [stderr]     Checking left-pad v1.0.1
Nov 30 11:53:18.205 INFO [stderr]     Checking trusty v0.1.0 (/source)
Nov 30 11:53:19.296 INFO [stderr] warning: variable does not need to be mutable
Nov 30 11:53:19.296 INFO [stderr]   --> src/backend.rs:62:17
Nov 30 11:53:19.296 INFO [stderr]    |
Nov 30 11:53:19.296 INFO [stderr] 62 |             let mut buf = self.current_buffer_mut();
Nov 30 11:53:19.296 INFO [stderr]    |                 ----^^^
Nov 30 11:53:19.296 INFO [stderr]    |                 |
Nov 30 11:53:19.296 INFO [stderr]    |                 help: remove this `mut`
Nov 30 11:53:19.296 INFO [stderr]    |
Nov 30 11:53:19.296 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Nov 30 11:53:19.296 INFO [stderr] 
Nov 30 11:53:19.296 INFO [stderr] warning: variable does not need to be mutable
Nov 30 11:53:19.296 INFO [stderr]   --> src/backend.rs:66:13
Nov 30 11:53:19.296 INFO [stderr]    |
Nov 30 11:53:19.296 INFO [stderr] 66 |         let mut cursor = self.cursor_mut();
Nov 30 11:53:19.296 INFO [stderr]    |             ----^^^^^^
Nov 30 11:53:19.296 INFO [stderr]    |             |
Nov 30 11:53:19.296 INFO [stderr]    |             help: remove this `mut`
Nov 30 11:53:19.296 INFO [stderr] 
Nov 30 11:53:19.464 INFO [stderr] warning: variable does not need to be mutable
Nov 30 11:53:19.464 INFO [stderr]   --> src/backend.rs:62:17
Nov 30 11:53:19.464 INFO [stderr]    |
Nov 30 11:53:19.464 INFO [stderr] 62 |             let mut buf = self.current_buffer_mut();
Nov 30 11:53:19.464 INFO [stderr]    |                 ----^^^
Nov 30 11:53:19.464 INFO [stderr]    |                 |
Nov 30 11:53:19.464 INFO [stderr]    |                 help: remove this `mut`
Nov 30 11:53:19.464 INFO [stderr]    |
Nov 30 11:53:19.464 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Nov 30 11:53:19.464 INFO [stderr] 
Nov 30 11:53:19.464 INFO [stderr] warning: variable does not need to be mutable
Nov 30 11:53:19.464 INFO [stderr]   --> src/backend.rs:66:13
Nov 30 11:53:19.464 INFO [stderr]    |
Nov 30 11:53:19.464 INFO [stderr] 66 |         let mut cursor = self.cursor_mut();
Nov 30 11:53:19.464 INFO [stderr]    |             ----^^^^^^
Nov 30 11:53:19.465 INFO [stderr]    |             |
Nov 30 11:53:19.465 INFO [stderr]    |             help: remove this `mut`
Nov 30 11:53:19.465 INFO [stderr] 
Nov 30 11:53:20.383 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.62s
Nov 30 11:53:20.386 INFO [stderr] su: No module specific data is present
Nov 30 11:53:20.927 INFO running `"docker" "inspect" "7f7d5cb4c977cda0428829698ebf1de2e3e783e9a1ab757d5bb97bdb0e84cdfe"`
Nov 30 11:53:21.072 INFO running `"docker" "rm" "-f" "7f7d5cb4c977cda0428829698ebf1de2e3e783e9a1ab757d5bb97bdb0e84cdfe"`
Nov 30 11:53:21.287 INFO [stdout] 7f7d5cb4c977cda0428829698ebf1de2e3e783e9a1ab757d5bb97bdb0e84cdfe