Dec 11 13:10:18.835 INFO checking mtn/silver against master#3a75e80557a103497cffbcab395a2f37061a77ea for pr-56677
Dec 11 13:10:18.836 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56677/worker-3/master#3a75e80557a103497cffbcab395a2f37061a77ea:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-3/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 11 13:10:19.248 INFO [stdout] 9d317c1245981454090adbfa8f5a91af552add0e7ee3dd1efd1ac5a5badc8cd4
Dec 11 13:10:19.256 INFO running `"docker" "start" "-a" "9d317c1245981454090adbfa8f5a91af552add0e7ee3dd1efd1ac5a5badc8cd4"`
Dec 11 13:10:20.443 INFO [stderr] usermod: no changes
Dec 11 13:10:20.496 INFO [stderr]     Checking silver v0.1.0 (/source)
Dec 11 13:10:21.730 INFO [stderr] warning: variable does not need to be mutable
Dec 11 13:10:21.730 INFO [stderr]    --> src/parser.rs:331:13
Dec 11 13:10:21.730 INFO [stderr]     |
Dec 11 13:10:21.730 INFO [stderr] 331 |         let mut lexer = lexer::Lexer::new(inp);
Dec 11 13:10:21.730 INFO [stderr]     |             ----^^^^^
Dec 11 13:10:21.730 INFO [stderr]     |             |
Dec 11 13:10:21.730 INFO [stderr]     |             help: remove this `mut`
Dec 11 13:10:21.730 INFO [stderr]     |
Dec 11 13:10:21.730 INFO [stderr]     = note: #[warn(unused_mut)] on by default
Dec 11 13:10:21.730 INFO [stderr] 
Dec 11 13:10:21.732 INFO [stderr] warning: variable does not need to be mutable
Dec 11 13:10:21.732 INFO [stderr]    --> src/parser.rs:344:13
Dec 11 13:10:21.732 INFO [stderr]     |
Dec 11 13:10:21.732 INFO [stderr] 344 |         let mut lexer = lexer::Lexer::new(inp);
Dec 11 13:10:21.732 INFO [stderr]     |             ----^^^^^
Dec 11 13:10:21.732 INFO [stderr]     |             |
Dec 11 13:10:21.732 INFO [stderr]     |             help: remove this `mut`
Dec 11 13:10:21.732 INFO [stderr] 
Dec 11 13:10:21.734 INFO [stderr] warning: variable does not need to be mutable
Dec 11 13:10:21.734 INFO [stderr]    --> src/parser.rs:366:13
Dec 11 13:10:21.734 INFO [stderr]     |
Dec 11 13:10:21.734 INFO [stderr] 366 |         let mut lexer = lexer::Lexer::new(inp);
Dec 11 13:10:21.734 INFO [stderr]     |             ----^^^^^
Dec 11 13:10:21.734 INFO [stderr]     |             |
Dec 11 13:10:21.734 INFO [stderr]     |             help: remove this `mut`
Dec 11 13:10:21.734 INFO [stderr] 
Dec 11 13:10:21.736 INFO [stderr] warning: variable does not need to be mutable
Dec 11 13:10:21.737 INFO [stderr]    --> src/parser.rs:385:13
Dec 11 13:10:21.737 INFO [stderr]     |
Dec 11 13:10:21.737 INFO [stderr] 385 |         let mut lexer = lexer::Lexer::new(inp);
Dec 11 13:10:21.737 INFO [stderr]     |             ----^^^^^
Dec 11 13:10:21.737 INFO [stderr]     |             |
Dec 11 13:10:21.737 INFO [stderr]     |             help: remove this `mut`
Dec 11 13:10:21.737 INFO [stderr] 
Dec 11 13:10:21.739 INFO [stderr] warning: variable does not need to be mutable
Dec 11 13:10:21.739 INFO [stderr]    --> src/parser.rs:406:13
Dec 11 13:10:21.739 INFO [stderr]     |
Dec 11 13:10:21.739 INFO [stderr] 406 |         let mut lexer = lexer::Lexer::new(inp);
Dec 11 13:10:21.739 INFO [stderr]     |             ----^^^^^
Dec 11 13:10:21.739 INFO [stderr]     |             |
Dec 11 13:10:21.739 INFO [stderr]     |             help: remove this `mut`
Dec 11 13:10:21.739 INFO [stderr] 
Dec 11 13:10:21.741 INFO [stderr] warning: variable does not need to be mutable
Dec 11 13:10:21.741 INFO [stderr]    --> src/parser.rs:430:13
Dec 11 13:10:21.741 INFO [stderr]     |
Dec 11 13:10:21.741 INFO [stderr] 430 |         let mut lexer = lexer::Lexer::new(inp);
Dec 11 13:10:21.741 INFO [stderr]     |             ----^^^^^
Dec 11 13:10:21.741 INFO [stderr]     |             |
Dec 11 13:10:21.741 INFO [stderr]     |             help: remove this `mut`
Dec 11 13:10:21.741 INFO [stderr] 
Dec 11 13:10:21.743 INFO [stderr] warning: variable does not need to be mutable
Dec 11 13:10:21.743 INFO [stderr]    --> src/parser.rs:451:13
Dec 11 13:10:21.743 INFO [stderr]     |
Dec 11 13:10:21.743 INFO [stderr] 451 |         let mut lexer = lexer::Lexer::new(inp);
Dec 11 13:10:21.743 INFO [stderr]     |             ----^^^^^
Dec 11 13:10:21.743 INFO [stderr]     |             |
Dec 11 13:10:21.743 INFO [stderr]     |             help: remove this `mut`
Dec 11 13:10:21.743 INFO [stderr] 
Dec 11 13:10:21.746 INFO [stderr] warning: variable does not need to be mutable
Dec 11 13:10:21.746 INFO [stderr]    --> src/parser.rs:487:13
Dec 11 13:10:21.746 INFO [stderr]     |
Dec 11 13:10:21.746 INFO [stderr] 487 |         let mut lexer = lexer::Lexer::new(inp);
Dec 11 13:10:21.746 INFO [stderr]     |             ----^^^^^
Dec 11 13:10:21.746 INFO [stderr]     |             |
Dec 11 13:10:21.746 INFO [stderr]     |             help: remove this `mut`
Dec 11 13:10:21.746 INFO [stderr] 
Dec 11 13:10:21.824 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.35s
Dec 11 13:10:21.830 INFO [stderr] su: No module specific data is present
Dec 11 13:10:22.750 INFO running `"docker" "inspect" "9d317c1245981454090adbfa8f5a91af552add0e7ee3dd1efd1ac5a5badc8cd4"`
Dec 11 13:10:23.047 INFO running `"docker" "rm" "-f" "9d317c1245981454090adbfa8f5a91af552add0e7ee3dd1efd1ac5a5badc8cd4"`
Dec 11 13:10:23.335 INFO [stdout] 9d317c1245981454090adbfa8f5a91af552add0e7ee3dd1efd1ac5a5badc8cd4