Sep 19 21:20:25.714 INFO checking ruma-signatures-0.4.0 against master#1e21c9a297a9fe668d62887a3a6a4add8e717b17 for pr-54352
Sep 19 21:20:25.714 INFO running: cargo +1e21c9a297a9fe668d62887a3a6a4add8e717b17-alt check --frozen --all --all-targets
Sep 19 21:20:25.714 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-1/pr-54352/master#1e21c9a297a9fe668d62887a3a6a4add8e717b17:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-54352/worker-1/master#1e21c9a297a9fe668d62887a3a6a4add8e717b17:/target:rw,Z" "-v" "/home/ec2-user/crater/./work/local/cargo-home:/cargo-home:ro,Z" "-v" "/home/ec2-user/crater/./work/local/rustup-home:/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "CMD=cargo +1e21c9a297a9fe668d62887a3a6a4add8e717b17-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-m" "1536M" "crater"`
Sep 19 21:20:25.916 INFO blam! 766b2d1b316882566cffa52feff4efe5f0ba0f80a5b057e80420cc37e276a2d3
Sep 19 21:20:25.918 INFO running `"docker" "start" "-a" "766b2d1b316882566cffa52feff4efe5f0ba0f80a5b057e80420cc37e276a2d3"`
Sep 19 21:20:27.130 INFO kablam! usermod: no changes
Sep 19 21:20:27.237 INFO kablam!    Compiling ring v0.9.7
Sep 19 21:20:31.937 INFO kablam!     Checking ruma-signatures v0.4.0 (/source)
Sep 19 21:20:32.468 INFO kablam! warning: variable does not need to be mutable
Sep 19 21:20:32.468 INFO kablam!    --> src/lib.rs:196:13
Sep 19 21:20:32.468 INFO kablam!     |
Sep 19 21:20:32.468 INFO kablam! 196 |         let mut object = owned_value.as_object_mut().expect("safe since we checked above");
Sep 19 21:20:32.468 INFO kablam!     |             ----^^^^^^
Sep 19 21:20:32.468 INFO kablam!     |             |
Sep 19 21:20:32.468 INFO kablam!     |             help: remove this `mut`
Sep 19 21:20:32.468 INFO kablam!     |
Sep 19 21:20:32.468 INFO kablam!     = note: #[warn(unused_mut)] on by default
Sep 19 21:20:32.468 INFO kablam! 
Sep 19 21:20:32.526 INFO kablam! warning: variable does not need to be mutable
Sep 19 21:20:32.526 INFO kablam!    --> src/lib.rs:196:13
Sep 19 21:20:32.526 INFO kablam!     |
Sep 19 21:20:32.526 INFO kablam! 196 |         let mut object = owned_value.as_object_mut().expect("safe since we checked above");
Sep 19 21:20:32.526 INFO kablam!     |             ----^^^^^^
Sep 19 21:20:32.526 INFO kablam!     |             |
Sep 19 21:20:32.526 INFO kablam!     |             help: remove this `mut`
Sep 19 21:20:32.526 INFO kablam!     |
Sep 19 21:20:32.526 INFO kablam!     = note: #[warn(unused_mut)] on by default
Sep 19 21:20:32.526 INFO kablam! 
Sep 19 21:20:32.607 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 5.46s
Sep 19 21:20:32.615 INFO kablam! su: No module specific data is present
Sep 19 21:20:33.159 INFO running `"docker" "rm" "-f" "766b2d1b316882566cffa52feff4efe5f0ba0f80a5b057e80420cc37e276a2d3"`
Sep 19 21:20:33.231 INFO blam! 766b2d1b316882566cffa52feff4efe5f0ba0f80a5b057e80420cc37e276a2d3