Dec 17 16:04:14.065 INFO checking sbalaji1996/tokenizer against try#0b8c5828f68d7b2840b81fa51239346dc97fef5a for pr-54252
Dec 17 16:04:14.065 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-54252/worker-4/try#0b8c5828f68d7b2840b81fa51239346dc97fef5a:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-54252/sources/try#0b8c5828f68d7b2840b81fa51239346dc97fef5a/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" "+0b8c5828f68d7b2840b81fa51239346dc97fef5a-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 17 16:04:14.610 INFO [stdout] cd4554f46674f4d80fd4c24561493f9c2f8a0bedf69a315adab2e2d7873acd13
Dec 17 16:04:14.616 INFO running `"docker" "start" "-a" "cd4554f46674f4d80fd4c24561493f9c2f8a0bedf69a315adab2e2d7873acd13"`
Dec 17 16:04:16.811 INFO [stderr]     Checking serde v1.0.14
Dec 17 16:04:16.817 INFO [stderr]     Checking term_size v0.3.0
Dec 17 16:04:16.825 INFO [stderr]     Checking atty v0.2.2
Dec 17 16:04:17.358 INFO [stderr]     Checking textwrap v0.7.0
Dec 17 16:04:18.017 INFO [stderr]     Checking clap v2.26.0
Dec 17 16:04:30.705 INFO [stderr]     Checking serde_json v1.0.3
Dec 17 16:04:32.841 INFO [stderr]     Checking tokenizer v0.1.0 (/opt/crater/workdir)
Dec 17 16:04:33.284 INFO [stderr] warning: unused import: `std::io::BufReader`
Dec 17 16:04:33.285 INFO [stderr]   --> src/main.rs:12:5
Dec 17 16:04:33.285 INFO [stderr]    |
Dec 17 16:04:33.285 INFO [stderr] 12 | use std::io::BufReader;
Dec 17 16:04:33.285 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^
Dec 17 16:04:33.286 INFO [stderr]    |
Dec 17 16:04:33.289 INFO [stderr]    = note: #[warn(unused_imports)] on by default
Dec 17 16:04:33.289 INFO [stderr] warning: unused import: `std::io::BufReader`
Dec 17 16:04:33.289 INFO [stderr]   --> src/main.rs:12:5
Dec 17 16:04:33.289 INFO [stderr]    |
Dec 17 16:04:33.290 INFO [stderr] 12 | use std::io::BufReader;
Dec 17 16:04:33.290 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^
Dec 17 16:04:33.290 INFO [stderr]    |
Dec 17 16:04:33.291 INFO [stderr]    = note: #[warn(unused_imports)] on by default
Dec 17 16:04:33.291 INFO [stderr] 
Dec 17 16:04:33.291 INFO [stderr] 
Dec 17 16:04:33.531 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 17 16:04:33.532 INFO [stderr]   --> src/main.rs:34:5
Dec 17 16:04:33.532 INFO [stderr]    |
Dec 17 16:04:33.533 INFO [stderr] 34 |     tokenize(contents);
Dec 17 16:04:33.533 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^
Dec 17 16:04:33.533 INFO [stderr]    |
Dec 17 16:04:33.534 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 17 16:04:33.534 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 17 16:04:33.534 INFO [stderr] 
Dec 17 16:04:33.538 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 17 16:04:33.538 INFO [stderr]   --> src/main.rs:34:5
Dec 17 16:04:33.538 INFO [stderr]    |
Dec 17 16:04:33.538 INFO [stderr] 34 |     tokenize(contents);
Dec 17 16:04:33.539 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^
Dec 17 16:04:33.544 INFO [stderr]    |
Dec 17 16:04:33.544 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 17 16:04:33.544 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 17 16:04:33.544 INFO [stderr] 
Dec 17 16:04:33.604 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 16.89s
Dec 17 16:04:35.545 INFO running `"docker" "inspect" "cd4554f46674f4d80fd4c24561493f9c2f8a0bedf69a315adab2e2d7873acd13"`
Dec 17 16:04:35.844 INFO running `"docker" "rm" "-f" "cd4554f46674f4d80fd4c24561493f9c2f8a0bedf69a315adab2e2d7873acd13"`
Dec 17 16:04:36.156 INFO [stdout] cd4554f46674f4d80fd4c24561493f9c2f8a0bedf69a315adab2e2d7873acd13