Dec 19 22:27:15.267 INFO checking Pamplemousse/mathematical_expression_evaluation against master#d99a320cba42f661aebfa1293b7b2ec3603dda75 for pr-56955
Dec 19 22:27:15.267 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56955/worker-1/master#d99a320cba42f661aebfa1293b7b2ec3603dda75:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-56955/sources/master#d99a320cba42f661aebfa1293b7b2ec3603dda75/gh/Pamplemousse/mathematical_expression_evaluation:/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" "+d99a320cba42f661aebfa1293b7b2ec3603dda75-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 19 22:27:15.818 INFO [stdout] 4559279c8fdd2751b1e4964f85386c0f3e1bffff1e3f62e097b70533bdf32afc
Dec 19 22:27:15.820 INFO running `"docker" "start" "-a" "4559279c8fdd2751b1e4964f85386c0f3e1bffff1e3f62e097b70533bdf32afc"`
Dec 19 22:27:17.619 INFO [stderr]     Checking math_eval v0.1.0 (/opt/crater/workdir)
Dec 19 22:27:17.941 INFO [stderr] warning: unused import: `self::literal::digit::Digit`
Dec 19 22:27:17.941 INFO [stderr]  --> src/tokenizer/token/mod.rs:8:5
Dec 19 22:27:17.941 INFO [stderr]   |
Dec 19 22:27:17.941 INFO [stderr] 8 | use self::literal::digit::Digit;
Dec 19 22:27:17.941 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 22:27:17.941 INFO [stderr]   |
Dec 19 22:27:17.941 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 19 22:27:17.941 INFO [stderr] 
Dec 19 22:27:17.941 INFO [stderr] warning: unused import: `self::token::operator::Operator`
Dec 19 22:27:17.941 INFO [stderr]  --> src/tokenizer/mod.rs:5:5
Dec 19 22:27:17.941 INFO [stderr]   |
Dec 19 22:27:17.948 INFO [stderr] 5 | use self::token::operator::Operator;
Dec 19 22:27:17.948 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 22:27:17.948 INFO [stderr] 
Dec 19 22:27:18.028 INFO [stderr] warning: unused import: `self::literal::digit::Digit`
Dec 19 22:27:18.029 INFO [stderr]  --> src/tokenizer/token/mod.rs:8:5
Dec 19 22:27:18.029 INFO [stderr]   |
Dec 19 22:27:18.029 INFO [stderr] 8 | use self::literal::digit::Digit;
Dec 19 22:27:18.029 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 22:27:18.030 INFO [stderr]   |
Dec 19 22:27:18.030 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 19 22:27:18.030 INFO [stderr] 
Dec 19 22:27:18.030 INFO [stderr] warning: unused import: `self::token::operator::Operator`
Dec 19 22:27:18.030 INFO [stderr]  --> src/tokenizer/mod.rs:5:5
Dec 19 22:27:18.030 INFO [stderr]   |
Dec 19 22:27:18.030 INFO [stderr] 5 | use self::token::operator::Operator;
Dec 19 22:27:18.030 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 22:27:18.030 INFO [stderr] 
Dec 19 22:27:18.187 INFO [stderr] warning: method is never used: `from`
Dec 19 22:27:18.187 INFO [stderr]   --> src/tokenizer/token/literal/mod.rs:14:5
Dec 19 22:27:18.187 INFO [stderr]    |
Dec 19 22:27:18.187 INFO [stderr] 14 |     pub fn from(string: String) -> Literal {
Dec 19 22:27:18.187 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 22:27:18.187 INFO [stderr]    |
Dec 19 22:27:18.187 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 19 22:27:18.187 INFO [stderr] 
Dec 19 22:27:18.400 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.83s
Dec 19 22:27:19.102 INFO running `"docker" "inspect" "4559279c8fdd2751b1e4964f85386c0f3e1bffff1e3f62e097b70533bdf32afc"`
Dec 19 22:27:19.332 INFO running `"docker" "rm" "-f" "4559279c8fdd2751b1e4964f85386c0f3e1bffff1e3f62e097b70533bdf32afc"`
Dec 19 22:27:19.660 INFO [stdout] 4559279c8fdd2751b1e4964f85386c0f3e1bffff1e3f62e097b70533bdf32afc