Nov 28 15:13:48.645 INFO checking xi-rpc-0.2.0 against try#db42d4dad33013eba11ef37342ad9f614e5652b8 for pr-56074
Nov 28 15:13:48.645 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56074/worker-3/try#db42d4dad33013eba11ef37342ad9f614e5652b8:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-3/pr-56074/try#db42d4dad33013eba11ef37342ad9f614e5652b8:/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 +db42d4dad33013eba11ef37342ad9f614e5652b8-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 28 15:13:48.996 INFO [stdout] fbdfaffbb1a6193c0000d06b976b2c75feec774fb7d0e06307466bd89029cc88
Nov 28 15:13:48.998 INFO running `"docker" "start" "-a" "fbdfaffbb1a6193c0000d06b976b2c75feec774fb7d0e06307466bd89029cc88"`
Nov 28 15:13:50.020 INFO [stderr] usermod: no changes
Nov 28 15:13:50.114 INFO [stderr]     Checking xi-rpc v0.2.0 (/source)
Nov 28 15:13:51.034 INFO [stderr] warning: variable does not need to be mutable
Nov 28 15:13:51.034 INFO [stderr]    --> src/lib.rs:326:13
Nov 28 15:13:51.034 INFO [stderr]     |
Nov 28 15:13:51.034 INFO [stderr] 326 |         let mut dict = response.as_object_mut().unwrap();
Nov 28 15:13:51.034 INFO [stderr]     |             ----^^^^
Nov 28 15:13:51.034 INFO [stderr]     |             |
Nov 28 15:13:51.034 INFO [stderr]     |             help: remove this `mut`
Nov 28 15:13:51.034 INFO [stderr]     |
Nov 28 15:13:51.034 INFO [stderr]     = note: #[warn(unused_mut)] on by default
Nov 28 15:13:51.034 INFO [stderr] 
Nov 28 15:13:51.034 INFO [stderr] warning: variable does not need to be mutable
Nov 28 15:13:51.034 INFO [stderr]    --> src/lib.rs:393:9
Nov 28 15:13:51.034 INFO [stderr]     |
Nov 28 15:13:51.034 INFO [stderr] 393 |     let mut dict_ref = dict.as_object_mut().expect("dict_add_value passed non-object.");
Nov 28 15:13:51.034 INFO [stderr]     |         ----^^^^^^^^
Nov 28 15:13:51.034 INFO [stderr]     |         |
Nov 28 15:13:51.034 INFO [stderr]     |         help: remove this `mut`
Nov 28 15:13:51.034 INFO [stderr] 
Nov 28 15:13:51.143 INFO [stderr] warning: variable does not need to be mutable
Nov 28 15:13:51.143 INFO [stderr]    --> src/lib.rs:326:13
Nov 28 15:13:51.143 INFO [stderr]     |
Nov 28 15:13:51.143 INFO [stderr] 326 |         let mut dict = response.as_object_mut().unwrap();
Nov 28 15:13:51.143 INFO [stderr]     |             ----^^^^
Nov 28 15:13:51.143 INFO [stderr]     |             |
Nov 28 15:13:51.143 INFO [stderr]     |             help: remove this `mut`
Nov 28 15:13:51.143 INFO [stderr]     |
Nov 28 15:13:51.143 INFO [stderr]     = note: #[warn(unused_mut)] on by default
Nov 28 15:13:51.143 INFO [stderr] 
Nov 28 15:13:51.143 INFO [stderr] warning: variable does not need to be mutable
Nov 28 15:13:51.143 INFO [stderr]    --> src/lib.rs:393:9
Nov 28 15:13:51.143 INFO [stderr]     |
Nov 28 15:13:51.143 INFO [stderr] 393 |     let mut dict_ref = dict.as_object_mut().expect("dict_add_value passed non-object.");
Nov 28 15:13:51.143 INFO [stderr]     |         ----^^^^^^^^
Nov 28 15:13:51.143 INFO [stderr]     |         |
Nov 28 15:13:51.143 INFO [stderr]     |         help: remove this `mut`
Nov 28 15:13:51.143 INFO [stderr] 
Nov 28 15:13:51.796 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.73s
Nov 28 15:13:51.796 INFO [stderr] su: No module specific data is present
Nov 28 15:13:52.244 INFO running `"docker" "inspect" "fbdfaffbb1a6193c0000d06b976b2c75feec774fb7d0e06307466bd89029cc88"`
Nov 28 15:13:52.444 INFO running `"docker" "rm" "-f" "fbdfaffbb1a6193c0000d06b976b2c75feec774fb7d0e06307466bd89029cc88"`
Nov 28 15:13:52.616 INFO [stdout] fbdfaffbb1a6193c0000d06b976b2c75feec774fb7d0e06307466bd89029cc88