Dec 17 19:12:31.167 INFO checking mtn/silver against try#0b8c5828f68d7b2840b81fa51239346dc97fef5a for pr-54252
Dec 17 19:12:31.167 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-54252/worker-2/try#0b8c5828f68d7b2840b81fa51239346dc97fef5a:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-54252/sources/try#0b8c5828f68d7b2840b81fa51239346dc97fef5a/gh/mtn/silver:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+0b8c5828f68d7b2840b81fa51239346dc97fef5a-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 17 19:12:31.600 INFO [stdout] 3a1ec74a5fef0318bc4458ae78f39d0011b46305588138d99f3a544301751e9d
Dec 17 19:12:31.602 INFO running `"docker" "start" "-a" "3a1ec74a5fef0318bc4458ae78f39d0011b46305588138d99f3a544301751e9d"`
Dec 17 19:12:33.193 INFO [stderr]     Checking silver v0.1.0 (/opt/crater/workdir)
Dec 17 19:12:33.736 INFO [stderr] warning: variable does not need to be mutable
Dec 17 19:12:33.736 INFO [stderr]    --> src/parser.rs:331:13
Dec 17 19:12:33.736 INFO [stderr]     |
Dec 17 19:12:33.736 INFO [stderr] 331 |         let mut lexer = lexer::Lexer::new(inp);
Dec 17 19:12:33.736 INFO [stderr]     |             ----^^^^^
Dec 17 19:12:33.736 INFO [stderr]     |             |
Dec 17 19:12:33.736 INFO [stderr]     |             help: remove this `mut`
Dec 17 19:12:33.736 INFO [stderr]     |
Dec 17 19:12:33.736 INFO [stderr]     = note: #[warn(unused_mut)] on by default
Dec 17 19:12:33.736 INFO [stderr] 
Dec 17 19:12:33.738 INFO [stderr] warning: variable does not need to be mutable
Dec 17 19:12:33.738 INFO [stderr]    --> src/parser.rs:344:13
Dec 17 19:12:33.738 INFO [stderr]     |
Dec 17 19:12:33.738 INFO [stderr] 344 |         let mut lexer = lexer::Lexer::new(inp);
Dec 17 19:12:33.738 INFO [stderr]     |             ----^^^^^
Dec 17 19:12:33.738 INFO [stderr]     |             |
Dec 17 19:12:33.738 INFO [stderr]     |             help: remove this `mut`
Dec 17 19:12:33.738 INFO [stderr] 
Dec 17 19:12:33.742 INFO [stderr] warning: variable does not need to be mutable
Dec 17 19:12:33.742 INFO [stderr]    --> src/parser.rs:366:13
Dec 17 19:12:33.742 INFO [stderr]     |
Dec 17 19:12:33.742 INFO [stderr] 366 |         let mut lexer = lexer::Lexer::new(inp);
Dec 17 19:12:33.742 INFO [stderr]     |             ----^^^^^
Dec 17 19:12:33.742 INFO [stderr]     |             |
Dec 17 19:12:33.742 INFO [stderr]     |             help: remove this `mut`
Dec 17 19:12:33.742 INFO [stderr] 
Dec 17 19:12:33.742 INFO [stderr] warning: variable does not need to be mutable
Dec 17 19:12:33.742 INFO [stderr]    --> src/parser.rs:385:13
Dec 17 19:12:33.742 INFO [stderr]     |
Dec 17 19:12:33.742 INFO [stderr] 385 |         let mut lexer = lexer::Lexer::new(inp);
Dec 17 19:12:33.742 INFO [stderr]     |             ----^^^^^
Dec 17 19:12:33.742 INFO [stderr]     |             |
Dec 17 19:12:33.742 INFO [stderr]     |             help: remove this `mut`
Dec 17 19:12:33.742 INFO [stderr] 
Dec 17 19:12:33.745 INFO [stderr] warning: variable does not need to be mutable
Dec 17 19:12:33.745 INFO [stderr]    --> src/parser.rs:406:13
Dec 17 19:12:33.746 INFO [stderr]     |
Dec 17 19:12:33.746 INFO [stderr] 406 |         let mut lexer = lexer::Lexer::new(inp);
Dec 17 19:12:33.746 INFO [stderr]     |             ----^^^^^
Dec 17 19:12:33.746 INFO [stderr]     |             |
Dec 17 19:12:33.746 INFO [stderr]     |             help: remove this `mut`
Dec 17 19:12:33.746 INFO [stderr] 
Dec 17 19:12:33.752 INFO [stderr] warning: variable does not need to be mutable
Dec 17 19:12:33.752 INFO [stderr]    --> src/parser.rs:430:13
Dec 17 19:12:33.752 INFO [stderr]     |
Dec 17 19:12:33.752 INFO [stderr] 430 |         let mut lexer = lexer::Lexer::new(inp);
Dec 17 19:12:33.752 INFO [stderr]     |             ----^^^^^
Dec 17 19:12:33.752 INFO [stderr]     |             |
Dec 17 19:12:33.752 INFO [stderr]     |             help: remove this `mut`
Dec 17 19:12:33.752 INFO [stderr] 
Dec 17 19:12:33.752 INFO [stderr] warning: variable does not need to be mutable
Dec 17 19:12:33.752 INFO [stderr]    --> src/parser.rs:451:13
Dec 17 19:12:33.752 INFO [stderr]     |
Dec 17 19:12:33.752 INFO [stderr] 451 |         let mut lexer = lexer::Lexer::new(inp);
Dec 17 19:12:33.752 INFO [stderr]     |             ----^^^^^
Dec 17 19:12:33.752 INFO [stderr]     |             |
Dec 17 19:12:33.752 INFO [stderr]     |             help: remove this `mut`
Dec 17 19:12:33.752 INFO [stderr] 
Dec 17 19:12:33.752 INFO [stderr] warning: variable does not need to be mutable
Dec 17 19:12:33.752 INFO [stderr]    --> src/parser.rs:487:13
Dec 17 19:12:33.752 INFO [stderr]     |
Dec 17 19:12:33.752 INFO [stderr] 487 |         let mut lexer = lexer::Lexer::new(inp);
Dec 17 19:12:33.752 INFO [stderr]     |             ----^^^^^
Dec 17 19:12:33.752 INFO [stderr]     |             |
Dec 17 19:12:33.752 INFO [stderr]     |             help: remove this `mut`
Dec 17 19:12:33.752 INFO [stderr] 
Dec 17 19:12:34.048 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.86s
Dec 17 19:12:34.528 INFO running `"docker" "inspect" "3a1ec74a5fef0318bc4458ae78f39d0011b46305588138d99f3a544301751e9d"`
Dec 17 19:12:34.886 INFO running `"docker" "rm" "-f" "3a1ec74a5fef0318bc4458ae78f39d0011b46305588138d99f3a544301751e9d"`
Dec 17 19:12:35.336 INFO [stdout] 3a1ec74a5fef0318bc4458ae78f39d0011b46305588138d99f3a544301751e9d