[INFO] updating cached repository edwardwohaijun/unwrap
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/edwardwohaijun/unwrap
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/edwardwohaijun/unwrap" "work/ex/beta-1.38-1/sources/1.37.0/gh/edwardwohaijun/unwrap"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/edwardwohaijun/unwrap'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/edwardwohaijun/unwrap" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/edwardwohaijun/unwrap"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/edwardwohaijun/unwrap'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] ea51b3fb4617fefb875e90081c9e1577228a8e1a
[INFO] sha for GitHub repo edwardwohaijun/unwrap: ea51b3fb4617fefb875e90081c9e1577228a8e1a
[INFO] validating manifest of edwardwohaijun/unwrap 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 edwardwohaijun/unwrap 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 edwardwohaijun/unwrap
[INFO] finished frobbing edwardwohaijun/unwrap
[INFO] frobbed toml for edwardwohaijun/unwrap written to work/ex/beta-1.38-1/sources/1.37.0/gh/edwardwohaijun/unwrap/Cargo.toml
[INFO] started frobbing edwardwohaijun/unwrap
[INFO] finished frobbing edwardwohaijun/unwrap
[INFO] frobbed toml for edwardwohaijun/unwrap written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/edwardwohaijun/unwrap/Cargo.toml
[INFO] crate edwardwohaijun/unwrap 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 edwardwohaijun/unwrap 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-6/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/edwardwohaijun/unwrap:/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] 2d813b87102e32369c435b85a8d0aa3c1bb94c887cd3acfdf6eecb6fc8cbbc83
[INFO] running `"docker" "start" "-a" "2d813b87102e32369c435b85a8d0aa3c1bb94c887cd3acfdf6eecb6fc8cbbc83"`
[INFO] [stderr]    Compiling cc v1.0.28
[INFO] [stderr]    Compiling libc v0.1.12
[INFO] [stderr]    Compiling bitflags v0.6.0
[INFO] [stderr]    Compiling nom v2.2.1
[INFO] [stderr]    Compiling lazy_static v0.1.16
[INFO] [stderr]    Compiling unrar_sys v0.2.0
[INFO] [stderr]    Compiling rust-lzma v0.4.0
[INFO] [stderr]    Compiling rand v0.4.6
[INFO] [stderr]    Compiling memchr v0.1.11
[INFO] [stderr]    Compiling filetime v0.2.4
[INFO] [stderr]    Compiling rand_os v0.1.2
[INFO] [stderr]    Compiling xattr v0.2.2
[INFO] [stderr]    Compiling enum_primitive v0.1.1
[INFO] [stderr]    Compiling thread-id v2.0.0
[INFO] [stderr]    Compiling aho-corasick v0.5.3
[INFO] [stderr]    Compiling rand_pcg v0.1.1
[INFO] [stderr]    Compiling thread_local v0.2.7
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]    Compiling tar v0.4.20
[INFO] [stderr]    Compiling regex v0.1.80
[INFO] [stderr]    Compiling num-bigint v0.1.44
[INFO] [stderr]    Compiling parking_lot_core v0.2.14
[INFO] [stderr]    Compiling bzip2-sys v0.1.7
[INFO] [stderr]    Compiling miniz-sys v0.1.11
[INFO] [stderr]    Compiling parking_lot v0.4.8
[INFO] [stderr]    Compiling flate2 v1.0.6
[INFO] [stderr]    Compiling bzip2 v0.3.3
[INFO] [stderr]    Compiling num-rational v0.1.42
[INFO] [stderr]    Compiling zip v0.5.0
[INFO] [stderr]    Compiling tree_magic v0.2.1
[INFO] [stderr]    Compiling num v0.1.42
[INFO] [stderr]    Compiling unrar v0.4.3
[INFO] [stderr]    Compiling unwrap v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: function is never used: `create_dir`
[INFO] [stderr]    --> src/main.rs:251:1
[INFO] [stderr]     |
[INFO] [stderr] 251 | fn create_dir(path: &str) -> io::Result<String> { // after moving this fn into a module, make this one private
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: static variable `path_digi_suffix` should have an upper case name
[INFO] [stderr]   --> src/main.rs:35:16
[INFO] [stderr]    |
[INFO] [stderr] 35 |     static ref path_digi_suffix: Regex = Regex::new(r"_\((\d+)\)$").unwrap(); // to match a directory name: this_is_a_directory_(123)
[INFO] [stderr]    |                ^^^^^^^^^^^^^^^^ help: convert the identifier to upper case: `PATH_DIGI_SUFFIX`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(non_upper_case_globals)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 53.28s
[INFO] running `"docker" "inspect" "2d813b87102e32369c435b85a8d0aa3c1bb94c887cd3acfdf6eecb6fc8cbbc83"`
[INFO] running `"docker" "rm" "-f" "2d813b87102e32369c435b85a8d0aa3c1bb94c887cd3acfdf6eecb6fc8cbbc83"`
[INFO] [stdout] 2d813b87102e32369c435b85a8d0aa3c1bb94c887cd3acfdf6eecb6fc8cbbc83
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-6/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/edwardwohaijun/unwrap:/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] 3ecf4a4b6bacaae855a3e0fd20f7868ccb3a3f1e5fff3be638f31b54a4db45df
[INFO] running `"docker" "start" "-a" "3ecf4a4b6bacaae855a3e0fd20f7868ccb3a3f1e5fff3be638f31b54a4db45df"`
[INFO] [stderr]    Compiling unwrap v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: function is never used: `create_dir`
[INFO] [stderr]    --> src/main.rs:251:1
[INFO] [stderr]     |
[INFO] [stderr] 251 | fn create_dir(path: &str) -> io::Result<String> { // after moving this fn into a module, make this one private
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: static variable `path_digi_suffix` should have an upper case name
[INFO] [stderr]   --> src/main.rs:35:16
[INFO] [stderr]    |
[INFO] [stderr] 35 |     static ref path_digi_suffix: Regex = Regex::new(r"_\((\d+)\)$").unwrap(); // to match a directory name: this_is_a_directory_(123)
[INFO] [stderr]    |                ^^^^^^^^^^^^^^^^ help: convert the identifier to upper case: `PATH_DIGI_SUFFIX`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(non_upper_case_globals)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.79s
[INFO] running `"docker" "inspect" "3ecf4a4b6bacaae855a3e0fd20f7868ccb3a3f1e5fff3be638f31b54a4db45df"`
[INFO] running `"docker" "rm" "-f" "3ecf4a4b6bacaae855a3e0fd20f7868ccb3a3f1e5fff3be638f31b54a4db45df"`
[INFO] [stdout] 3ecf4a4b6bacaae855a3e0fd20f7868ccb3a3f1e5fff3be638f31b54a4db45df
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-6/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/edwardwohaijun/unwrap:/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] 3ab15a2644e01f4d07593e225b2328927bf3f64d99a059a34f5874b0bba5f144
[INFO] running `"docker" "start" "-a" "3ab15a2644e01f4d07593e225b2328927bf3f64d99a059a34f5874b0bba5f144"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.14s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/unwrap-37946e0151fde4e0
[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" "3ab15a2644e01f4d07593e225b2328927bf3f64d99a059a34f5874b0bba5f144"`
[INFO] running `"docker" "rm" "-f" "3ab15a2644e01f4d07593e225b2328927bf3f64d99a059a34f5874b0bba5f144"`
[INFO] [stdout] 3ab15a2644e01f4d07593e225b2328927bf3f64d99a059a34f5874b0bba5f144