[INFO] updating cached repository ngyihsin/grep
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/ngyihsin/grep
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/ngyihsin/grep" "work/ex/beta-1.37-6/sources/1.36.0/gh/ngyihsin/grep"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/1.36.0/gh/ngyihsin/grep'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/ngyihsin/grep" "work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/ngyihsin/grep"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/ngyihsin/grep'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] e1a5db2cfc21f73f733cfe8aa2a76c6eb6b2abec
[INFO] sha for GitHub repo ngyihsin/grep: e1a5db2cfc21f73f733cfe8aa2a76c6eb6b2abec
[INFO] validating manifest of ngyihsin/grep on toolchain 1.36.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of ngyihsin/grep on toolchain beta-2019-07-23
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing ngyihsin/grep
[INFO] finished frobbing ngyihsin/grep
[INFO] frobbed toml for ngyihsin/grep written to work/ex/beta-1.37-6/sources/1.36.0/gh/ngyihsin/grep/Cargo.toml
[INFO] started frobbing ngyihsin/grep
[INFO] finished frobbing ngyihsin/grep
[INFO] frobbed toml for ngyihsin/grep written to work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/ngyihsin/grep/Cargo.toml
[INFO] crate ngyihsin/grep already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing ngyihsin/grep against beta-2019-07-23 for beta-1.37-6
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-3/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/ngyihsin/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" "+beta-2019-07-23" "build" "--frozen"`
[INFO] [stdout] 6e540987ed9deec501761d91d3b8aeae0aaa2ec7df8705d39c36ff161d017274
[INFO] running `"docker" "start" "-a" "6e540987ed9deec501761d91d3b8aeae0aaa2ec7df8705d39c36ff161d017274"`
[INFO] [stderr]    Compiling hello v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/grep.rs:42:52
[INFO] [stderr]    |
[INFO] [stderr] 42 |     fn visit_dirs(query: &String, dir: &Path, cb: &Fn(&String, &DirEntry)) -> io::Result<()> {
[INFO] [stderr]    |                                                    ^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&String, &DirEntry)`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(bare_trait_objects)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/grep.rs:25:11
[INFO] [stderr]    |
[INFO] [stderr] 25 |       let mut p = Config {file_path: file_path, query: query, result: Vec::new()};
[INFO] [stderr]    |           ----^
[INFO] [stderr]    |           |
[INFO] [stderr]    |           help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_mut)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.08s
[INFO] running `"docker" "inspect" "6e540987ed9deec501761d91d3b8aeae0aaa2ec7df8705d39c36ff161d017274"`
[INFO] running `"docker" "rm" "-f" "6e540987ed9deec501761d91d3b8aeae0aaa2ec7df8705d39c36ff161d017274"`
[INFO] [stdout] 6e540987ed9deec501761d91d3b8aeae0aaa2ec7df8705d39c36ff161d017274
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-3/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/ngyihsin/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" "+beta-2019-07-23" "test" "--frozen" "--no-run"`
[INFO] [stdout] e9cbc7579b0d5a64d61304d972919f3be014163e0e47506855144f7c874e6e83
[INFO] running `"docker" "start" "-a" "e9cbc7579b0d5a64d61304d972919f3be014163e0e47506855144f7c874e6e83"`
[INFO] [stderr]    Compiling hello v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/grep.rs:42:52
[INFO] [stderr]    |
[INFO] [stderr] 42 |     fn visit_dirs(query: &String, dir: &Path, cb: &Fn(&String, &DirEntry)) -> io::Result<()> {
[INFO] [stderr]    |                                                    ^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&String, &DirEntry)`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(bare_trait_objects)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/grep.rs:25:11
[INFO] [stderr]    |
[INFO] [stderr] 25 |       let mut p = Config {file_path: file_path, query: query, result: Vec::new()};
[INFO] [stderr]    |           ----^
[INFO] [stderr]    |           |
[INFO] [stderr]    |           help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_mut)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.74s
[INFO] running `"docker" "inspect" "e9cbc7579b0d5a64d61304d972919f3be014163e0e47506855144f7c874e6e83"`
[INFO] running `"docker" "rm" "-f" "e9cbc7579b0d5a64d61304d972919f3be014163e0e47506855144f7c874e6e83"`
[INFO] [stdout] e9cbc7579b0d5a64d61304d972919f3be014163e0e47506855144f7c874e6e83
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-3/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/ngyihsin/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" "+beta-2019-07-23" "test" "--frozen"`
[INFO] [stdout] 3eff96fce4b1b936bdf4c7a9575805377c4f0a45e54e28c0676bc0f6de10b13b
[INFO] running `"docker" "start" "-a" "3eff96fce4b1b936bdf4c7a9575805377c4f0a45e54e28c0676bc0f6de10b13b"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.05s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/hello-da53561ef832630e
[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" "3eff96fce4b1b936bdf4c7a9575805377c4f0a45e54e28c0676bc0f6de10b13b"`
[INFO] running `"docker" "rm" "-f" "3eff96fce4b1b936bdf4c7a9575805377c4f0a45e54e28c0676bc0f6de10b13b"`
[INFO] [stdout] 3eff96fce4b1b936bdf4c7a9575805377c4f0a45e54e28c0676bc0f6de10b13b