Sep 10 10:42:27.473 INFO checking rust_lsp-0.6.1 against try#3a2610c2a16575649896925631bf8cec4f4b1961 for pr-54090
Sep 10 10:42:27.473 INFO running: cargo +3a2610c2a16575649896925631bf8cec4f4b1961-alt check --frozen --all --all-targets
Sep 10 10:42:27.473 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-0/pr-54090/try#3a2610c2a16575649896925631bf8cec4f4b1961:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-54090/worker-0/try#3a2610c2a16575649896925631bf8cec4f4b1961:/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 +3a2610c2a16575649896925631bf8cec4f4b1961-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-m" "2G" "crater"`
Sep 10 10:42:27.758 INFO blam! 0cd782f603113321a35764f2ff46448cb72c0d64efeb9cd546fc3daa736db840
Sep 10 10:42:27.761 INFO running `"docker" "start" "-a" "0cd782f603113321a35764f2ff46448cb72c0d64efeb9cd546fc3daa736db840"`
Sep 10 10:42:28.423 INFO kablam! usermod: no changes
Sep 10 10:42:28.534 INFO kablam!     Checking rustdt_util v0.2.3
Sep 10 10:42:28.534 INFO kablam!     Checking url v1.7.1
Sep 10 10:42:29.012 INFO kablam!     Checking rustdt-json_rpc v0.3.0
Sep 10 10:42:30.958 INFO kablam!     Checking languageserver-types v0.6.1
Sep 10 10:42:35.541 INFO kablam!     Checking rust_lsp v0.6.1 (file:///source)
Sep 10 10:42:36.738 INFO kablam! warning: variable does not need to be mutable
Sep 10 10:42:36.738 INFO kablam!   --> src/lsp.rs:75:9
Sep 10 10:42:36.738 INFO kablam!    |
Sep 10 10:42:36.738 INFO kablam! 75 |         mut msg_reader: &mut MR, endpoint: Endpoint, lsp_server_handler: SERVER
Sep 10 10:42:36.738 INFO kablam!    |         ----^^^^^^^^^^
Sep 10 10:42:36.738 INFO kablam!    |         |
Sep 10 10:42:36.738 INFO kablam!    |         help: remove this `mut`
Sep 10 10:42:36.738 INFO kablam!    |
Sep 10 10:42:36.738 INFO kablam!    = note: #[warn(unused_mut)] on by default
Sep 10 10:42:36.738 INFO kablam! 
Sep 10 10:42:36.740 INFO kablam! warning: variable does not need to be mutable
Sep 10 10:42:36.740 INFO kablam!   --> src/lsp.rs:95:9
Sep 10 10:42:36.740 INFO kablam!    |
Sep 10 10:42:36.740 INFO kablam! 95 |         mut msg_reader: &mut MR, endpoint: Endpoint, request_handler: Box<RequestHandler>
Sep 10 10:42:36.740 INFO kablam!    |         ----^^^^^^^^^^
Sep 10 10:42:36.740 INFO kablam!    |         |
Sep 10 10:42:36.740 INFO kablam!    |         help: remove this `mut`
Sep 10 10:42:36.746 INFO kablam! 
Sep 10 10:42:36.788 INFO kablam! warning: variable does not need to be mutable
Sep 10 10:42:36.788 INFO kablam!   --> src/lsp.rs:75:9
Sep 10 10:42:36.788 INFO kablam!    |
Sep 10 10:42:36.788 INFO kablam! 75 |         mut msg_reader: &mut MR, endpoint: Endpoint, lsp_server_handler: SERVER
Sep 10 10:42:36.788 INFO kablam!    |         ----^^^^^^^^^^
Sep 10 10:42:36.788 INFO kablam!    |         |
Sep 10 10:42:36.788 INFO kablam!    |         help: remove this `mut`
Sep 10 10:42:36.788 INFO kablam!    |
Sep 10 10:42:36.788 INFO kablam!    = note: #[warn(unused_mut)] on by default
Sep 10 10:42:36.788 INFO kablam! 
Sep 10 10:42:36.791 INFO kablam! warning: variable does not need to be mutable
Sep 10 10:42:36.791 INFO kablam!   --> src/lsp.rs:95:9
Sep 10 10:42:36.791 INFO kablam!    |
Sep 10 10:42:36.791 INFO kablam! 95 |         mut msg_reader: &mut MR, endpoint: Endpoint, request_handler: Box<RequestHandler>
Sep 10 10:42:36.792 INFO kablam!    |         ----^^^^^^^^^^
Sep 10 10:42:36.792 INFO kablam!    |         |
Sep 10 10:42:36.792 INFO kablam!    |         help: remove this `mut`
Sep 10 10:42:36.792 INFO kablam! 
Sep 10 10:42:37.232 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 8.78s
Sep 10 10:42:37.238 INFO kablam! su: No module specific data is present
Sep 10 10:42:38.296 INFO running `"docker" "rm" "-f" "0cd782f603113321a35764f2ff46448cb72c0d64efeb9cd546fc3daa736db840"`
Sep 10 10:42:38.416 INFO blam! 0cd782f603113321a35764f2ff46448cb72c0d64efeb9cd546fc3daa736db840