Nov 01 17:16:21.859 INFO checking ruma-signatures-0.4.0 against master#05812fa8c588473f03e3fa7cf59cd84f4f37c715 for pr-55538
Nov 01 17:16:21.859 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-55538/worker-0/master#05812fa8c588473f03e3fa7cf59cd84f4f37c715:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-0/pr-55538/master#05812fa8c588473f03e3fa7cf59cd84f4f37c715:/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 +05812fa8c588473f03e3fa7cf59cd84f4f37c715-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 01 17:16:21.991 INFO blam! 796794f1c7070df56f757298006068e60121220e1f830a5b646dfe08956a5e3b
Nov 01 17:16:21.992 INFO running `"docker" "start" "-a" "796794f1c7070df56f757298006068e60121220e1f830a5b646dfe08956a5e3b"`
Nov 01 17:16:22.418 INFO kablam! usermod: no changes
Nov 01 17:16:22.492 INFO kablam!    Compiling ring v0.9.7
Nov 01 17:16:29.625 INFO kablam!     Checking ruma-signatures v0.4.0 (/source)
Nov 01 17:16:32.152 INFO kablam! warning: variable does not need to be mutable
Nov 01 17:16:32.152 INFO kablam!    --> src/lib.rs:196:13
Nov 01 17:16:32.152 INFO kablam!     |
Nov 01 17:16:32.152 INFO kablam! 196 |         let mut object = owned_value.as_object_mut().expect("safe since we checked above");
Nov 01 17:16:32.152 INFO kablam!     |             ----^^^^^^
Nov 01 17:16:32.152 INFO kablam!     |             |
Nov 01 17:16:32.152 INFO kablam!     |             help: remove this `mut`
Nov 01 17:16:32.152 INFO kablam!     |
Nov 01 17:16:32.152 INFO kablam!     = note: #[warn(unused_mut)] on by default
Nov 01 17:16:32.152 INFO kablam! 
Nov 01 17:16:32.264 INFO kablam! warning: variable does not need to be mutable
Nov 01 17:16:32.264 INFO kablam!    --> src/lib.rs:196:13
Nov 01 17:16:32.264 INFO kablam!     |
Nov 01 17:16:32.264 INFO kablam! 196 |         let mut object = owned_value.as_object_mut().expect("safe since we checked above");
Nov 01 17:16:32.264 INFO kablam!     |             ----^^^^^^
Nov 01 17:16:32.264 INFO kablam!     |             |
Nov 01 17:16:32.264 INFO kablam!     |             help: remove this `mut`
Nov 01 17:16:32.264 INFO kablam!     |
Nov 01 17:16:32.264 INFO kablam!     = note: #[warn(unused_mut)] on by default
Nov 01 17:16:32.264 INFO kablam! 
Nov 01 17:16:32.403 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 9.97s
Nov 01 17:16:32.416 INFO kablam! su: No module specific data is present
Nov 01 17:16:33.116 INFO running `"docker" "rm" "-f" "796794f1c7070df56f757298006068e60121220e1f830a5b646dfe08956a5e3b"`
Nov 01 17:16:33.481 INFO blam! 796794f1c7070df56f757298006068e60121220e1f830a5b646dfe08956a5e3b