Nov 04 18:33:59.855 INFO checking ruma-signatures-0.4.0 against master#2ad8c7b3502616aff142a4640cce911c6c2c5463 for pr-55655
Nov 04 18:33:59.855 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-55655/worker-7/master#2ad8c7b3502616aff142a4640cce911c6c2c5463:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-7/pr-55655/master#2ad8c7b3502616aff142a4640cce911c6c2c5463:/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 +2ad8c7b3502616aff142a4640cce911c6c2c5463-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 04 18:34:00.005 INFO blam! 31e894b5fb8b5adfcc808de555e68aaa2c460de6ea0e805c977fa8705926378f
Nov 04 18:34:00.008 INFO running `"docker" "start" "-a" "31e894b5fb8b5adfcc808de555e68aaa2c460de6ea0e805c977fa8705926378f"`
Nov 04 18:34:00.387 INFO kablam! usermod: no changes
Nov 04 18:34:00.472 INFO kablam!     Checking base64 v0.5.2
Nov 04 18:34:00.483 INFO kablam!    Compiling ring v0.9.7
Nov 04 18:34:06.631 INFO kablam!     Checking ruma-signatures v0.4.0 (/source)
Nov 04 18:34:08.131 INFO kablam! warning: variable does not need to be mutable
Nov 04 18:34:08.131 INFO kablam!    --> src/lib.rs:196:13
Nov 04 18:34:08.131 INFO kablam!     |
Nov 04 18:34:08.131 INFO kablam! 196 |         let mut object = owned_value.as_object_mut().expect("safe since we checked above");
Nov 04 18:34:08.131 INFO kablam!     |             ----^^^^^^
Nov 04 18:34:08.131 INFO kablam!     |             |
Nov 04 18:34:08.131 INFO kablam!     |             help: remove this `mut`
Nov 04 18:34:08.133 INFO kablam!     |
Nov 04 18:34:08.139 INFO kablam!     = note: #[warn(unused_mut)] on by default
Nov 04 18:34:08.139 INFO kablam! 
Nov 04 18:34:08.915 INFO kablam! warning: variable does not need to be mutable
Nov 04 18:34:08.915 INFO kablam!    --> src/lib.rs:196:13
Nov 04 18:34:08.915 INFO kablam!     |
Nov 04 18:34:08.915 INFO kablam! 196 |         let mut object = owned_value.as_object_mut().expect("safe since we checked above");
Nov 04 18:34:08.915 INFO kablam!     |             ----^^^^^^
Nov 04 18:34:08.915 INFO kablam!     |             |
Nov 04 18:34:08.915 INFO kablam!     |             help: remove this `mut`
Nov 04 18:34:08.915 INFO kablam!     |
Nov 04 18:34:08.915 INFO kablam!     = note: #[warn(unused_mut)] on by default
Nov 04 18:34:08.915 INFO kablam! 
Nov 04 18:34:09.047 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 8.62s
Nov 04 18:34:09.051 INFO kablam! su: No module specific data is present
Nov 04 18:34:09.579 INFO running `"docker" "rm" "-f" "31e894b5fb8b5adfcc808de555e68aaa2c460de6ea0e805c977fa8705926378f"`
Nov 04 18:34:09.955 INFO blam! 31e894b5fb8b5adfcc808de555e68aaa2c460de6ea0e805c977fa8705926378f