[INFO] updating cached repository segfo/dirwalker
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/segfo/dirwalker
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/segfo/dirwalker" "work/ex/beta-1.38-1/sources/1.37.0/gh/segfo/dirwalker"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/segfo/dirwalker'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/segfo/dirwalker" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/segfo/dirwalker"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/segfo/dirwalker'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 24bd0713bd6c0087e2d47c94ae4b1b9a014eb1f4
[INFO] sha for GitHub repo segfo/dirwalker: 24bd0713bd6c0087e2d47c94ae4b1b9a014eb1f4
[INFO] validating manifest of segfo/dirwalker 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 segfo/dirwalker 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 segfo/dirwalker
[INFO] finished frobbing segfo/dirwalker
[INFO] frobbed toml for segfo/dirwalker written to work/ex/beta-1.38-1/sources/1.37.0/gh/segfo/dirwalker/Cargo.toml
[INFO] started frobbing segfo/dirwalker
[INFO] finished frobbing segfo/dirwalker
[INFO] frobbed toml for segfo/dirwalker written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/segfo/dirwalker/Cargo.toml
[INFO] crate segfo/dirwalker 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 segfo/dirwalker 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-4/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/segfo/dirwalker:/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] bddba93111c5122460456ddd70b2ef596db4d1fe52786c47f285bf68d0f1310e
[INFO] running `"docker" "start" "-a" "bddba93111c5122460456ddd70b2ef596db4d1fe52786c47f285bf68d0f1310e"`
[INFO] [stderr]    Compiling dirwalker v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused variable: `walker`
[INFO] [stderr]   --> src/main.rs:57:13
[INFO] [stderr]    |
[INFO] [stderr] 57 | fn callback(walker:&DirectoryWalker,entry:DirEntry,parent:&DirectoryInfo) -> io::Result<()> {
[INFO] [stderr]    |             ^^^^^^ help: consider prefixing with an underscore: `_walker`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `entry`
[INFO] [stderr]   --> src/main.rs:57:37
[INFO] [stderr]    |
[INFO] [stderr] 57 | fn callback(walker:&DirectoryWalker,entry:DirEntry,parent:&DirectoryInfo) -> io::Result<()> {
[INFO] [stderr]    |                                     ^^^^^ help: consider prefixing with an underscore: `_entry`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `parent`
[INFO] [stderr]   --> src/main.rs:57:52
[INFO] [stderr]    |
[INFO] [stderr] 57 | fn callback(walker:&DirectoryWalker,entry:DirEntry,parent:&DirectoryInfo) -> io::Result<()> {
[INFO] [stderr]    |                                                    ^^^^^^ help: consider prefixing with an underscore: `_parent`
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `root_dir`
[INFO] [stderr]   --> src/main.rs:15:5
[INFO] [stderr]    |
[INFO] [stderr] 15 |     root_dir:String,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `root_dir_mode`
[INFO] [stderr]   --> src/main.rs:16:5
[INFO] [stderr]    |
[INFO] [stderr] 16 |     root_dir_mode:u32,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.21s
[INFO] running `"docker" "inspect" "bddba93111c5122460456ddd70b2ef596db4d1fe52786c47f285bf68d0f1310e"`
[INFO] running `"docker" "rm" "-f" "bddba93111c5122460456ddd70b2ef596db4d1fe52786c47f285bf68d0f1310e"`
[INFO] [stdout] bddba93111c5122460456ddd70b2ef596db4d1fe52786c47f285bf68d0f1310e
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-4/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/segfo/dirwalker:/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] c46a83e39a70d83242afb168f62ed1c8397952d3468adc6ced202b164b0c084f
[INFO] running `"docker" "start" "-a" "c46a83e39a70d83242afb168f62ed1c8397952d3468adc6ced202b164b0c084f"`
[INFO] [stderr]    Compiling dirwalker v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused variable: `walker`
[INFO] [stderr]   --> src/main.rs:57:13
[INFO] [stderr]    |
[INFO] [stderr] 57 | fn callback(walker:&DirectoryWalker,entry:DirEntry,parent:&DirectoryInfo) -> io::Result<()> {
[INFO] [stderr]    |             ^^^^^^ help: consider prefixing with an underscore: `_walker`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `entry`
[INFO] [stderr]   --> src/main.rs:57:37
[INFO] [stderr]    |
[INFO] [stderr] 57 | fn callback(walker:&DirectoryWalker,entry:DirEntry,parent:&DirectoryInfo) -> io::Result<()> {
[INFO] [stderr]    |                                     ^^^^^ help: consider prefixing with an underscore: `_entry`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `parent`
[INFO] [stderr]   --> src/main.rs:57:52
[INFO] [stderr]    |
[INFO] [stderr] 57 | fn callback(walker:&DirectoryWalker,entry:DirEntry,parent:&DirectoryInfo) -> io::Result<()> {
[INFO] [stderr]    |                                                    ^^^^^^ help: consider prefixing with an underscore: `_parent`
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `root_dir`
[INFO] [stderr]   --> src/main.rs:15:5
[INFO] [stderr]    |
[INFO] [stderr] 15 |     root_dir:String,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `root_dir_mode`
[INFO] [stderr]   --> src/main.rs:16:5
[INFO] [stderr]    |
[INFO] [stderr] 16 |     root_dir_mode:u32,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.78s
[INFO] running `"docker" "inspect" "c46a83e39a70d83242afb168f62ed1c8397952d3468adc6ced202b164b0c084f"`
[INFO] running `"docker" "rm" "-f" "c46a83e39a70d83242afb168f62ed1c8397952d3468adc6ced202b164b0c084f"`
[INFO] [stdout] c46a83e39a70d83242afb168f62ed1c8397952d3468adc6ced202b164b0c084f
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-4/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/segfo/dirwalker:/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] a9d0c05bde6af9018525ff133eb680206bf415daf2ab73b2ff5bf3489818cd16
[INFO] running `"docker" "start" "-a" "a9d0c05bde6af9018525ff133eb680206bf415daf2ab73b2ff5bf3489818cd16"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/dirwalker-3f4c6239b25e80fa
[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" "a9d0c05bde6af9018525ff133eb680206bf415daf2ab73b2ff5bf3489818cd16"`
[INFO] running `"docker" "rm" "-f" "a9d0c05bde6af9018525ff133eb680206bf415daf2ab73b2ff5bf3489818cd16"`
[INFO] [stdout] a9d0c05bde6af9018525ff133eb680206bf415daf2ab73b2ff5bf3489818cd16