Nov 30 16:17:06.836 INFO checking rust_lsp-0.6.1 against master#a49316ddc99d9d595193557fc899f6c52e4d9af9 for pr-56323
Nov 30 16:17:06.836 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56323/worker-7/master#a49316ddc99d9d595193557fc899f6c52e4d9af9:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-7/pr-56323/master#a49316ddc99d9d595193557fc899f6c52e4d9af9:/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 +a49316ddc99d9d595193557fc899f6c52e4d9af9-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 30 16:17:07.148 INFO [stdout] bb861c328b132cc98cf6a189a826c7afe420ef88b31defbe47e94e85417b2b13
Nov 30 16:17:07.154 INFO running `"docker" "start" "-a" "bb861c328b132cc98cf6a189a826c7afe420ef88b31defbe47e94e85417b2b13"`
Nov 30 16:17:07.644 INFO [stderr] usermod: no changes
Nov 30 16:17:07.745 INFO [stderr]     Checking rustdt-json_rpc v0.3.0
Nov 30 16:17:07.745 INFO [stderr]     Checking languageserver-types v0.6.1
Nov 30 16:17:12.281 INFO [stderr]     Checking rust_lsp v0.6.1 (/source)
Nov 30 16:17:14.479 INFO [stderr] warning: variable does not need to be mutable
Nov 30 16:17:14.479 INFO [stderr]   --> src/lsp.rs:75:9
Nov 30 16:17:14.479 INFO [stderr]    |
Nov 30 16:17:14.479 INFO [stderr] 75 |         mut msg_reader: &mut MR, endpoint: Endpoint, lsp_server_handler: SERVER
Nov 30 16:17:14.479 INFO [stderr]    |         ----^^^^^^^^^^
Nov 30 16:17:14.479 INFO [stderr]    |         |
Nov 30 16:17:14.479 INFO [stderr]    |         help: remove this `mut`
Nov 30 16:17:14.479 INFO [stderr]    |
Nov 30 16:17:14.479 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Nov 30 16:17:14.479 INFO [stderr] 
Nov 30 16:17:14.485 INFO [stderr] warning: variable does not need to be mutable
Nov 30 16:17:14.485 INFO [stderr]   --> src/lsp.rs:95:9
Nov 30 16:17:14.485 INFO [stderr]    |
Nov 30 16:17:14.485 INFO [stderr] 95 |         mut msg_reader: &mut MR, endpoint: Endpoint, request_handler: Box<RequestHandler>
Nov 30 16:17:14.485 INFO [stderr]    |         ----^^^^^^^^^^
Nov 30 16:17:14.485 INFO [stderr]    |         |
Nov 30 16:17:14.485 INFO [stderr]    |         help: remove this `mut`
Nov 30 16:17:14.485 INFO [stderr] 
Nov 30 16:17:14.544 INFO [stderr] warning: variable does not need to be mutable
Nov 30 16:17:14.544 INFO [stderr]   --> src/lsp.rs:75:9
Nov 30 16:17:14.544 INFO [stderr]    |
Nov 30 16:17:14.544 INFO [stderr] 75 |         mut msg_reader: &mut MR, endpoint: Endpoint, lsp_server_handler: SERVER
Nov 30 16:17:14.544 INFO [stderr]    |         ----^^^^^^^^^^
Nov 30 16:17:14.544 INFO [stderr]    |         |
Nov 30 16:17:14.544 INFO [stderr]    |         help: remove this `mut`
Nov 30 16:17:14.544 INFO [stderr]    |
Nov 30 16:17:14.544 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Nov 30 16:17:14.544 INFO [stderr] 
Nov 30 16:17:14.550 INFO [stderr] warning: variable does not need to be mutable
Nov 30 16:17:14.550 INFO [stderr]   --> src/lsp.rs:95:9
Nov 30 16:17:14.550 INFO [stderr]    |
Nov 30 16:17:14.550 INFO [stderr] 95 |         mut msg_reader: &mut MR, endpoint: Endpoint, request_handler: Box<RequestHandler>
Nov 30 16:17:14.550 INFO [stderr]    |         ----^^^^^^^^^^
Nov 30 16:17:14.550 INFO [stderr]    |         |
Nov 30 16:17:14.550 INFO [stderr]    |         help: remove this `mut`
Nov 30 16:17:14.550 INFO [stderr] 
Nov 30 16:17:15.036 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 7.37s
Nov 30 16:17:15.042 INFO [stderr] su: No module specific data is present
Nov 30 16:17:15.393 INFO running `"docker" "inspect" "bb861c328b132cc98cf6a189a826c7afe420ef88b31defbe47e94e85417b2b13"`
Nov 30 16:17:15.576 INFO running `"docker" "rm" "-f" "bb861c328b132cc98cf6a189a826c7afe420ef88b31defbe47e94e85417b2b13"`
Nov 30 16:17:15.832 INFO [stdout] bb861c328b132cc98cf6a189a826c7afe420ef88b31defbe47e94e85417b2b13