[INFO] updating cached repository elpiel/rust-grep
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/elpiel/rust-grep
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/elpiel/rust-grep" "work/ex/beta-1.38-1/sources/1.37.0/gh/elpiel/rust-grep"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/elpiel/rust-grep'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/elpiel/rust-grep" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/elpiel/rust-grep"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/elpiel/rust-grep'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 5a7927785690481a10662d162734f51718f5153b
[INFO] sha for GitHub repo elpiel/rust-grep: 5a7927785690481a10662d162734f51718f5153b
[INFO] validating manifest of elpiel/rust-grep 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 elpiel/rust-grep 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 elpiel/rust-grep
[INFO] finished frobbing elpiel/rust-grep
[INFO] frobbed toml for elpiel/rust-grep written to work/ex/beta-1.38-1/sources/1.37.0/gh/elpiel/rust-grep/Cargo.toml
[INFO] started frobbing elpiel/rust-grep
[INFO] finished frobbing elpiel/rust-grep
[INFO] frobbed toml for elpiel/rust-grep written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/elpiel/rust-grep/Cargo.toml
[INFO] crate elpiel/rust-grep 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 elpiel/rust-grep against 1.37.0 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-0/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/elpiel/rust-grep:/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" "+1.37.0" "build" "--frozen"`
[INFO] [stdout] e953f1166f5a423fe4260f0ddd7d10a409a52b3ced4ea2d00dbc48a6e93128a4
[INFO] running `"docker" "start" "-a" "e953f1166f5a423fe4260f0ddd7d10a409a52b3ced4ea2d00dbc48a6e93128a4"`
[INFO] [stderr]    Compiling libc v0.2.40
[INFO] [stderr]    Compiling regex v1.0.0
[INFO] [stderr]    Compiling regex-syntax v0.6.0
[INFO] [stderr]    Compiling memchr v2.0.1
[INFO] [stderr]    Compiling aho-corasick v0.6.4
[INFO] [stderr]    Compiling grep v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused `#[macro_use]` import
[INFO] [stderr]  --> src/main.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | #[macro_use] extern crate lazy_static;
[INFO] [stderr]   | ^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `colorful_output`
[INFO] [stderr]   --> src/main.rs:11:9
[INFO] [stderr]    |
[INFO] [stderr] 11 |     let colorful_output = true;
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^ help: consider prefixing with an underscore: `_colorful_output`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 16.12s
[INFO] running `"docker" "inspect" "e953f1166f5a423fe4260f0ddd7d10a409a52b3ced4ea2d00dbc48a6e93128a4"`
[INFO] running `"docker" "rm" "-f" "e953f1166f5a423fe4260f0ddd7d10a409a52b3ced4ea2d00dbc48a6e93128a4"`
[INFO] [stdout] e953f1166f5a423fe4260f0ddd7d10a409a52b3ced4ea2d00dbc48a6e93128a4
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-0/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/elpiel/rust-grep:/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" "+1.37.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] 7d6a56eed581e38a30de50a7a53de6407e8044c1aa17d1617eb1025e39690b4f
[INFO] running `"docker" "start" "-a" "7d6a56eed581e38a30de50a7a53de6407e8044c1aa17d1617eb1025e39690b4f"`
[INFO] [stderr]    Compiling grep v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused `#[macro_use]` import
[INFO] [stderr]  --> src/main.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | #[macro_use] extern crate lazy_static;
[INFO] [stderr]   | ^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `colorful_output`
[INFO] [stderr]   --> src/main.rs:11:9
[INFO] [stderr]    |
[INFO] [stderr] 11 |     let colorful_output = true;
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^ help: consider prefixing with an underscore: `_colorful_output`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.74s
[INFO] running `"docker" "inspect" "7d6a56eed581e38a30de50a7a53de6407e8044c1aa17d1617eb1025e39690b4f"`
[INFO] running `"docker" "rm" "-f" "7d6a56eed581e38a30de50a7a53de6407e8044c1aa17d1617eb1025e39690b4f"`
[INFO] [stdout] 7d6a56eed581e38a30de50a7a53de6407e8044c1aa17d1617eb1025e39690b4f
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-0/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/elpiel/rust-grep:/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" "+1.37.0" "test" "--frozen"`
[INFO] [stdout] d92279ad598f5c6c17f3e2d2c456033a538b5910ccb730b4b1fed5eaa01fdd54
[INFO] running `"docker" "start" "-a" "d92279ad598f5c6c17f3e2d2c456033a538b5910ccb730b4b1fed5eaa01fdd54"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/grep-a3132a4298224933
[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" "d92279ad598f5c6c17f3e2d2c456033a538b5910ccb730b4b1fed5eaa01fdd54"`
[INFO] running `"docker" "rm" "-f" "d92279ad598f5c6c17f3e2d2c456033a538b5910ccb730b4b1fed5eaa01fdd54"`
[INFO] [stdout] d92279ad598f5c6c17f3e2d2c456033a538b5910ccb730b4b1fed5eaa01fdd54