Nov 01 17:16:21.790 INFO checking ruma-signatures-0.4.0 against try#d7816399d50d407bbce1efe9dbadf8faaaf568fc for pr-55538
Nov 01 17:16:21.790 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-55538/worker-7/try#d7816399d50d407bbce1efe9dbadf8faaaf568fc:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-7/pr-55538/try#d7816399d50d407bbce1efe9dbadf8faaaf568fc:/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 +d7816399d50d407bbce1efe9dbadf8faaaf568fc-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 17:16:21.932 INFO blam! 9c459d03c7dfaa6736762c17e8b834f4bba8c8de5f01c5212ae29b445f5a11e9
Nov 01 17:16:21.934 INFO running `"docker" "start" "-a" "9c459d03c7dfaa6736762c17e8b834f4bba8c8de5f01c5212ae29b445f5a11e9"`
Nov 01 17:16:22.371 INFO kablam! usermod: no changes
Nov 01 17:16:22.462 INFO kablam!    Compiling ring v0.9.7
Nov 01 17:16:29.762 INFO kablam!     Checking ruma-signatures v0.4.0 (/source)
Nov 01 17:16:31.604 INFO kablam! warning: variable does not need to be mutable
Nov 01 17:16:31.604 INFO kablam!    --> src/lib.rs:196:13
Nov 01 17:16:31.604 INFO kablam!     |
Nov 01 17:16:31.604 INFO kablam! 196 |         let mut object = owned_value.as_object_mut().expect("safe since we checked above");
Nov 01 17:16:31.604 INFO kablam!     |             ----^^^^^^
Nov 01 17:16:31.604 INFO kablam!     |             |
Nov 01 17:16:31.604 INFO kablam!     |             help: remove this `mut`
Nov 01 17:16:31.604 INFO kablam!     |
Nov 01 17:16:31.604 INFO kablam!     = note: #[warn(unused_mut)] on by default
Nov 01 17:16:31.604 INFO kablam! 
Nov 01 17:16:32.047 INFO kablam! warning: variable does not need to be mutable
Nov 01 17:16:32.047 INFO kablam!    --> src/lib.rs:196:13
Nov 01 17:16:32.047 INFO kablam!     |
Nov 01 17:16:32.047 INFO kablam! 196 |         let mut object = owned_value.as_object_mut().expect("safe since we checked above");
Nov 01 17:16:32.047 INFO kablam!     |             ----^^^^^^
Nov 01 17:16:32.047 INFO kablam!     |             |
Nov 01 17:16:32.047 INFO kablam!     |             help: remove this `mut`
Nov 01 17:16:32.047 INFO kablam!     |
Nov 01 17:16:32.047 INFO kablam!     = note: #[warn(unused_mut)] on by default
Nov 01 17:16:32.047 INFO kablam! 
Nov 01 17:16:32.201 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 9.81s
Nov 01 17:16:32.213 INFO kablam! su: No module specific data is present
Nov 01 17:16:32.842 INFO running `"docker" "rm" "-f" "9c459d03c7dfaa6736762c17e8b834f4bba8c8de5f01c5212ae29b445f5a11e9"`
Nov 01 17:16:33.111 INFO blam! 9c459d03c7dfaa6736762c17e8b834f4bba8c8de5f01c5212ae29b445f5a11e9