Dec 12 02:12:21.527 INFO checking Jellonator/Emailang against master#3a75e80557a103497cffbcab395a2f37061a77ea for pr-56677
Dec 12 02:12:21.528 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56677/worker-0/master#3a75e80557a103497cffbcab395a2f37061a77ea:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-0/pr-56677/master#3a75e80557a103497cffbcab395a2f37061a77ea:/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 +3a75e80557a103497cffbcab395a2f37061a77ea-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"`
Dec 12 02:12:22.099 INFO [stdout] 740da0ed0d7c119c106d029a5b998a20f2372fe1c70fa72c099cbda20e62675f
Dec 12 02:12:22.101 INFO running `"docker" "start" "-a" "740da0ed0d7c119c106d029a5b998a20f2372fe1c70fa72c099cbda20e62675f"`
Dec 12 02:12:23.536 INFO [stderr] usermod: no changes
Dec 12 02:12:23.703 INFO [stderr]     Checking emailang v1.0.0 (/source)
Dec 12 02:12:25.833 INFO [stderr] warning: variable does not need to be mutable
Dec 12 02:12:25.833 INFO [stderr]   --> src/interpreter/mod.rs:58:7
Dec 12 02:12:25.833 INFO [stderr]    |
Dec 12 02:12:25.840 INFO [stderr] 58 |         let mut serv = match self.get_server(&tserver) {
Dec 12 02:12:25.840 INFO [stderr]    |             ----^^^^
Dec 12 02:12:25.840 INFO [stderr]    |             |
Dec 12 02:12:25.840 INFO [stderr]    |             help: remove this `mut`
Dec 12 02:12:25.840 INFO [stderr]    |
Dec 12 02:12:25.840 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 12 02:12:25.840 INFO [stderr] 
Dec 12 02:12:25.840 INFO [stderr] warning: variable does not need to be mutable
Dec 12 02:12:25.840 INFO [stderr]   --> src/interpreter/mod.rs:63:7
Dec 12 02:12:25.840 INFO [stderr]    |
Dec 12 02:12:25.840 INFO [stderr] 63 |         let mut user = match serv.get_user_mut(&tuser) {
Dec 12 02:12:25.840 INFO [stderr]    |             ----^^^^
Dec 12 02:12:25.840 INFO [stderr]    |             |
Dec 12 02:12:25.840 INFO [stderr]    |             help: remove this `mut`
Dec 12 02:12:25.840 INFO [stderr] 
Dec 12 02:12:26.056 INFO [stderr] warning: variable does not need to be mutable
Dec 12 02:12:26.056 INFO [stderr]   --> src/interpreter/mod.rs:58:7
Dec 12 02:12:26.056 INFO [stderr]    |
Dec 12 02:12:26.056 INFO [stderr] 58 |         let mut serv = match self.get_server(&tserver) {
Dec 12 02:12:26.056 INFO [stderr]    |             ----^^^^
Dec 12 02:12:26.056 INFO [stderr]    |             |
Dec 12 02:12:26.057 INFO [stderr]    |             help: remove this `mut`
Dec 12 02:12:26.057 INFO [stderr]    |
Dec 12 02:12:26.057 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 12 02:12:26.057 INFO [stderr] 
Dec 12 02:12:26.057 INFO [stderr] warning: variable does not need to be mutable
Dec 12 02:12:26.057 INFO [stderr]   --> src/interpreter/mod.rs:63:7
Dec 12 02:12:26.057 INFO [stderr]    |
Dec 12 02:12:26.057 INFO [stderr] 63 |         let mut user = match serv.get_user_mut(&tuser) {
Dec 12 02:12:26.057 INFO [stderr]    |             ----^^^^
Dec 12 02:12:26.057 INFO [stderr]    |             |
Dec 12 02:12:26.057 INFO [stderr]    |             help: remove this `mut`
Dec 12 02:12:26.057 INFO [stderr] 
Dec 12 02:12:26.233 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.67s
Dec 12 02:12:26.241 INFO [stderr] su: No module specific data is present
Dec 12 02:12:27.376 INFO running `"docker" "inspect" "740da0ed0d7c119c106d029a5b998a20f2372fe1c70fa72c099cbda20e62675f"`
Dec 12 02:12:27.746 INFO running `"docker" "rm" "-f" "740da0ed0d7c119c106d029a5b998a20f2372fe1c70fa72c099cbda20e62675f"`
Dec 12 02:12:28.133 INFO [stdout] 740da0ed0d7c119c106d029a5b998a20f2372fe1c70fa72c099cbda20e62675f