Oct 13 06:05:53.653 INFO checking xi-rpc-0.2.0 against master#5af0bb83044c3fb43d59ad5f49ee5ae1a293901f for pr-54977
Oct 13 06:05:53.653 INFO running `"docker" "create" "-v" "/mnt/big/crater/./work/local/target-dirs/pr-54977/worker-7/master#5af0bb83044c3fb43d59ad5f49ee5ae1a293901f:/target:rw,Z" "-v" "/mnt/big/crater/./work/local/test-source/worker-7/pr-54977/master#5af0bb83044c3fb43d59ad5f49ee5ae1a293901f:/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 +5af0bb83044c3fb43d59ad5f49ee5ae1a293901f-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"`
Oct 13 06:05:53.948 INFO blam! 630d4cfe5cc509bdf7c6f8247fe294057bb43c84e62d14e7273f49b824e1117c
Oct 13 06:05:53.960 INFO running `"docker" "start" "-a" "630d4cfe5cc509bdf7c6f8247fe294057bb43c84e62d14e7273f49b824e1117c"`
Oct 13 06:05:54.496 INFO kablam! usermod: no changes
Oct 13 06:05:54.581 INFO kablam!     Checking serde_json v0.9.10
Oct 13 06:05:56.820 INFO kablam!     Checking xi-rpc v0.2.0 (/source)
Oct 13 06:05:57.872 INFO kablam! warning: variable does not need to be mutable
Oct 13 06:05:57.872 INFO kablam!    --> src/lib.rs:326:13
Oct 13 06:05:57.872 INFO kablam!     |
Oct 13 06:05:57.872 INFO kablam! 326 |         let mut dict = response.as_object_mut().unwrap();
Oct 13 06:05:57.872 INFO kablam!     |             ----^^^^
Oct 13 06:05:57.872 INFO kablam!     |             |
Oct 13 06:05:57.872 INFO kablam!     |             help: remove this `mut`
Oct 13 06:05:57.872 INFO kablam!     |
Oct 13 06:05:57.872 INFO kablam!     = note: #[warn(unused_mut)] on by default
Oct 13 06:05:57.872 INFO kablam! 
Oct 13 06:05:57.880 INFO kablam! warning: variable does not need to be mutable
Oct 13 06:05:57.880 INFO kablam!    --> src/lib.rs:393:9
Oct 13 06:05:57.880 INFO kablam!     |
Oct 13 06:05:57.880 INFO kablam! 393 |     let mut dict_ref = dict.as_object_mut().expect("dict_add_value passed non-object.");
Oct 13 06:05:57.880 INFO kablam!     |         ----^^^^^^^^
Oct 13 06:05:57.880 INFO kablam!     |         |
Oct 13 06:05:57.880 INFO kablam!     |         help: remove this `mut`
Oct 13 06:05:57.880 INFO kablam! 
Oct 13 06:05:58.072 INFO kablam! warning: variable does not need to be mutable
Oct 13 06:05:58.072 INFO kablam!    --> src/lib.rs:326:13
Oct 13 06:05:58.072 INFO kablam!     |
Oct 13 06:05:58.072 INFO kablam! 326 |         let mut dict = response.as_object_mut().unwrap();
Oct 13 06:05:58.072 INFO kablam!     |             ----^^^^
Oct 13 06:05:58.072 INFO kablam!     |             |
Oct 13 06:05:58.072 INFO kablam!     |             help: remove this `mut`
Oct 13 06:05:58.072 INFO kablam!     |
Oct 13 06:05:58.072 INFO kablam!     = note: #[warn(unused_mut)] on by default
Oct 13 06:05:58.072 INFO kablam! 
Oct 13 06:05:58.077 INFO kablam! warning: variable does not need to be mutable
Oct 13 06:05:58.077 INFO kablam!    --> src/lib.rs:393:9
Oct 13 06:05:58.077 INFO kablam!     |
Oct 13 06:05:58.077 INFO kablam! 393 |     let mut dict_ref = dict.as_object_mut().expect("dict_add_value passed non-object.");
Oct 13 06:05:58.077 INFO kablam!     |         ----^^^^^^^^
Oct 13 06:05:58.077 INFO kablam!     |         |
Oct 13 06:05:58.077 INFO kablam!     |         help: remove this `mut`
Oct 13 06:05:58.077 INFO kablam! 
Oct 13 06:05:58.876 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 4.34s
Oct 13 06:05:58.877 INFO kablam! su: No module specific data is present
Oct 13 06:05:59.228 INFO running `"docker" "rm" "-f" "630d4cfe5cc509bdf7c6f8247fe294057bb43c84e62d14e7273f49b824e1117c"`
Oct 13 06:05:59.365 INFO blam! 630d4cfe5cc509bdf7c6f8247fe294057bb43c84e62d14e7273f49b824e1117c