[INFO] updating cached repository sbalaji1996/tokenizer
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/sbalaji1996/tokenizer
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/sbalaji1996/tokenizer" "work/ex/beta-1.38-1/sources/1.37.0/gh/sbalaji1996/tokenizer"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/sbalaji1996/tokenizer'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/sbalaji1996/tokenizer" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/sbalaji1996/tokenizer"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/sbalaji1996/tokenizer'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] f2221939e0cc4a8fcdda4a5302ec13d87bb41e77
[INFO] sha for GitHub repo sbalaji1996/tokenizer: f2221939e0cc4a8fcdda4a5302ec13d87bb41e77
[INFO] validating manifest of sbalaji1996/tokenizer on toolchain 1.37.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of sbalaji1996/tokenizer on toolchain beta-2019-08-13
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing sbalaji1996/tokenizer
[INFO] finished frobbing sbalaji1996/tokenizer
[INFO] frobbed toml for sbalaji1996/tokenizer written to work/ex/beta-1.38-1/sources/1.37.0/gh/sbalaji1996/tokenizer/Cargo.toml
[INFO] started frobbing sbalaji1996/tokenizer
[INFO] finished frobbing sbalaji1996/tokenizer
[INFO] frobbed toml for sbalaji1996/tokenizer written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/sbalaji1996/tokenizer/Cargo.toml
[INFO] crate sbalaji1996/tokenizer already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing sbalaji1996/tokenizer against beta-2019-08-13 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-2/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/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=warn" "-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" "+beta-2019-08-13" "build" "--frozen"`
[INFO] [stdout] 7775f38529123e84edbd32dc6feeafb5cbdcbecd774816d94a84737d79c722ce
[INFO] running `"docker" "start" "-a" "7775f38529123e84edbd32dc6feeafb5cbdcbecd774816d94a84737d79c722ce"`
[INFO] [stderr]    Compiling serde_json v1.0.3
[INFO] [stderr]    Compiling clap v2.26.0
[INFO] [stderr]    Compiling tokenizer v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused import: `std::io::BufReader`
[INFO] [stderr]   --> src/main.rs:12:5
[INFO] [stderr]    |
[INFO] [stderr] 12 | use std::io::BufReader;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/main.rs:34:5
[INFO] [stderr]    |
[INFO] [stderr] 34 |     tokenize(contents);
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 25.99s
[INFO] running `"docker" "inspect" "7775f38529123e84edbd32dc6feeafb5cbdcbecd774816d94a84737d79c722ce"`
[INFO] running `"docker" "rm" "-f" "7775f38529123e84edbd32dc6feeafb5cbdcbecd774816d94a84737d79c722ce"`
[INFO] [stdout] 7775f38529123e84edbd32dc6feeafb5cbdcbecd774816d94a84737d79c722ce
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-2/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/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=warn" "-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" "+beta-2019-08-13" "test" "--frozen" "--no-run"`
[INFO] [stdout] 19f0878069060f4350458b2d8fafb4da5e511108efa607ce4b61de73e83576e1
[INFO] running `"docker" "start" "-a" "19f0878069060f4350458b2d8fafb4da5e511108efa607ce4b61de73e83576e1"`
[INFO] [stderr]    Compiling tokenizer v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused import: `std::io::BufReader`
[INFO] [stderr]   --> src/main.rs:12:5
[INFO] [stderr]    |
[INFO] [stderr] 12 | use std::io::BufReader;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/main.rs:34:5
[INFO] [stderr]    |
[INFO] [stderr] 34 |     tokenize(contents);
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.81s
[INFO] running `"docker" "inspect" "19f0878069060f4350458b2d8fafb4da5e511108efa607ce4b61de73e83576e1"`
[INFO] running `"docker" "rm" "-f" "19f0878069060f4350458b2d8fafb4da5e511108efa607ce4b61de73e83576e1"`
[INFO] [stdout] 19f0878069060f4350458b2d8fafb4da5e511108efa607ce4b61de73e83576e1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-2/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/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=warn" "-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" "+beta-2019-08-13" "test" "--frozen"`
[INFO] [stdout] 2a546f9735081858784c67ba77da37c6737be4e47473bd57680e418ff6ca12cc
[INFO] running `"docker" "start" "-a" "2a546f9735081858784c67ba77da37c6737be4e47473bd57680e418ff6ca12cc"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.06s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/tokenizer-3a54e955985c3a6b
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "2a546f9735081858784c67ba77da37c6737be4e47473bd57680e418ff6ca12cc"`
[INFO] running `"docker" "rm" "-f" "2a546f9735081858784c67ba77da37c6737be4e47473bd57680e418ff6ca12cc"`
[INFO] [stdout] 2a546f9735081858784c67ba77da37c6737be4e47473bd57680e418ff6ca12cc