Dec 17 16:04:14.407 INFO checking sbalaji1996/tokenizer against master#96d1334e567237b1507cd277938e7ae2de75ff51 for pr-54252
Dec 17 16:04:14.408 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-54252/worker-5/master#96d1334e567237b1507cd277938e7ae2de75ff51:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-54252/sources/master#96d1334e567237b1507cd277938e7ae2de75ff51/gh/sbalaji1996/tokenizer:/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" "+96d1334e567237b1507cd277938e7ae2de75ff51-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 17 16:04:14.832 INFO [stdout] 5158bebdb72d57706780fb22d718b347e0bab79ad155e272c939775c2a23057b
Dec 17 16:04:14.838 INFO running `"docker" "start" "-a" "5158bebdb72d57706780fb22d718b347e0bab79ad155e272c939775c2a23057b"`
Dec 17 16:04:16.829 INFO [stderr]     Checking itoa v0.3.3
Dec 17 16:04:16.833 INFO [stderr]     Checking serde v1.0.14
Dec 17 16:04:16.856 INFO [stderr]    Compiling serde_derive v1.0.14
Dec 17 16:04:31.626 INFO [stderr]     Checking serde_json v1.0.3
Dec 17 16:04:33.698 INFO [stderr]     Checking tokenizer v0.1.0 (/opt/crater/workdir)
Dec 17 16:04:34.148 INFO [stderr] warning: unused import: `std::io::BufReader`
Dec 17 16:04:34.148 INFO [stderr]   --> src/main.rs:12:5
Dec 17 16:04:34.148 INFO [stderr]    |
Dec 17 16:04:34.148 INFO [stderr] 12 | use std::io::BufReader;
Dec 17 16:04:34.148 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^
Dec 17 16:04:34.148 INFO [stderr]    |
Dec 17 16:04:34.148 INFO [stderr]    = note: #[warn(unused_imports)] on by default
Dec 17 16:04:34.148 INFO [stderr] 
Dec 17 16:04:34.148 INFO [stderr] warning: unused import: `std::io::BufReader`
Dec 17 16:04:34.148 INFO [stderr]   --> src/main.rs:12:5
Dec 17 16:04:34.148 INFO [stderr]    |
Dec 17 16:04:34.148 INFO [stderr] 12 | use std::io::BufReader;
Dec 17 16:04:34.148 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^
Dec 17 16:04:34.148 INFO [stderr]    |
Dec 17 16:04:34.148 INFO [stderr]    = note: #[warn(unused_imports)] on by default
Dec 17 16:04:34.148 INFO [stderr] 
Dec 17 16:04:34.438 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 17 16:04:34.438 INFO [stderr]   --> src/main.rs:34:5
Dec 17 16:04:34.438 INFO [stderr]    |
Dec 17 16:04:34.438 INFO [stderr] 34 |     tokenize(contents);
Dec 17 16:04:34.438 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^
Dec 17 16:04:34.438 INFO [stderr]    |
Dec 17 16:04:34.439 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 17 16:04:34.439 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 17 16:04:34.439 INFO [stderr] 
Dec 17 16:04:34.451 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 17 16:04:34.451 INFO [stderr]   --> src/main.rs:34:5
Dec 17 16:04:34.451 INFO [stderr]    |
Dec 17 16:04:34.451 INFO [stderr] 34 |     tokenize(contents);
Dec 17 16:04:34.451 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^
Dec 17 16:04:34.451 INFO [stderr]    |
Dec 17 16:04:34.451 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 17 16:04:34.451 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 17 16:04:34.451 INFO [stderr] 
Dec 17 16:04:34.529 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 17.80s
Dec 17 16:04:35.922 INFO running `"docker" "inspect" "5158bebdb72d57706780fb22d718b347e0bab79ad155e272c939775c2a23057b"`
Dec 17 16:04:36.304 INFO running `"docker" "rm" "-f" "5158bebdb72d57706780fb22d718b347e0bab79ad155e272c939775c2a23057b"`
Dec 17 16:04:36.612 INFO [stdout] 5158bebdb72d57706780fb22d718b347e0bab79ad155e272c939775c2a23057b