Dec 19 09:21:45.334 INFO checking sbalaji1996/tokenizer against try#e70472fc501b855c9080f3772432c10fe20b8866 for pr-56955
Dec 19 09:21:45.334 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56955/worker-5/try#e70472fc501b855c9080f3772432c10fe20b8866:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-56955/sources/try#e70472fc501b855c9080f3772432c10fe20b8866/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" "+e70472fc501b855c9080f3772432c10fe20b8866-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 19 09:21:45.950 INFO [stdout] a6ca967ac45bbd3f733017cc96ac494d10e2b608bf96afb9fbf6eb20087a994d
Dec 19 09:21:45.952 INFO running `"docker" "start" "-a" "a6ca967ac45bbd3f733017cc96ac494d10e2b608bf96afb9fbf6eb20087a994d"`
Dec 19 09:21:48.514 INFO [stderr]     Checking serde v1.0.14
Dec 19 09:21:48.514 INFO [stderr]     Checking itoa v0.3.3
Dec 19 09:21:48.514 INFO [stderr]     Checking textwrap v0.7.0
Dec 19 09:21:48.514 INFO [stderr]    Compiling serde_derive v1.0.14
Dec 19 09:21:49.709 INFO [stderr]     Checking clap v2.26.0
Dec 19 09:22:06.244 INFO [stderr]     Checking serde_json v1.0.3
Dec 19 09:22:08.300 INFO [stderr]     Checking tokenizer v0.1.0 (/opt/crater/workdir)
Dec 19 09:22:08.636 INFO [stderr] warning: unused import: `std::io::BufReader`
Dec 19 09:22:08.636 INFO [stderr]   --> src/main.rs:12:5
Dec 19 09:22:08.636 INFO [stderr]    |
Dec 19 09:22:08.636 INFO [stderr] 12 | use std::io::BufReader;
Dec 19 09:22:08.636 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^
Dec 19 09:22:08.636 INFO [stderr]    |
Dec 19 09:22:08.636 INFO [stderr]    = note: #[warn(unused_imports)] on by default
Dec 19 09:22:08.636 INFO [stderr] 
Dec 19 09:22:08.681 INFO [stderr] warning: unused import: `std::io::BufReader`
Dec 19 09:22:08.681 INFO [stderr]   --> src/main.rs:12:5
Dec 19 09:22:08.681 INFO [stderr]    |
Dec 19 09:22:08.681 INFO [stderr] 12 | use std::io::BufReader;
Dec 19 09:22:08.681 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^
Dec 19 09:22:08.681 INFO [stderr]    |
Dec 19 09:22:08.681 INFO [stderr]    = note: #[warn(unused_imports)] on by default
Dec 19 09:22:08.681 INFO [stderr] 
Dec 19 09:22:08.884 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 19 09:22:08.885 INFO [stderr]   --> src/main.rs:34:5
Dec 19 09:22:08.885 INFO [stderr]    |
Dec 19 09:22:08.885 INFO [stderr] 34 |     tokenize(contents);
Dec 19 09:22:08.885 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^
Dec 19 09:22:08.886 INFO [stderr]    |
Dec 19 09:22:08.886 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 19 09:22:08.886 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 19 09:22:08.886 INFO [stderr] 
Dec 19 09:22:08.945 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 19 09:22:08.945 INFO [stderr]   --> src/main.rs:34:5
Dec 19 09:22:08.945 INFO [stderr]    |
Dec 19 09:22:08.945 INFO [stderr] 34 |     tokenize(contents);
Dec 19 09:22:08.945 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^
Dec 19 09:22:08.945 INFO [stderr]    |
Dec 19 09:22:08.945 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 19 09:22:08.945 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 19 09:22:08.945 INFO [stderr] 
Dec 19 09:22:08.985 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 20.59s
Dec 19 09:22:10.590 INFO running `"docker" "inspect" "a6ca967ac45bbd3f733017cc96ac494d10e2b608bf96afb9fbf6eb20087a994d"`
Dec 19 09:22:10.938 INFO running `"docker" "rm" "-f" "a6ca967ac45bbd3f733017cc96ac494d10e2b608bf96afb9fbf6eb20087a994d"`
Dec 19 09:22:11.332 INFO [stdout] a6ca967ac45bbd3f733017cc96ac494d10e2b608bf96afb9fbf6eb20087a994d