[INFO] updating cached repository tuggan/rcat
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/tuggan/rcat
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/tuggan/rcat" "work/ex/beta-1.38-1/sources/1.37.0/gh/tuggan/rcat"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/tuggan/rcat'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/tuggan/rcat" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/tuggan/rcat"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/tuggan/rcat'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 2af6acd8a2dc18b84ccdd0e25dfd7e2eaab53e9b
[INFO] sha for GitHub repo tuggan/rcat: 2af6acd8a2dc18b84ccdd0e25dfd7e2eaab53e9b
[INFO] validating manifest of tuggan/rcat 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 tuggan/rcat 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 tuggan/rcat
[INFO] finished frobbing tuggan/rcat
[INFO] frobbed toml for tuggan/rcat written to work/ex/beta-1.38-1/sources/1.37.0/gh/tuggan/rcat/Cargo.toml
[INFO] started frobbing tuggan/rcat
[INFO] finished frobbing tuggan/rcat
[INFO] frobbed toml for tuggan/rcat written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/tuggan/rcat/Cargo.toml
[INFO] crate tuggan/rcat 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 tuggan/rcat 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-1/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/tuggan/rcat:/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] 7f82aba4f1aa7f01aafc1632e7364ff5034a7be798d80a119675ce5c94ebdce7
[INFO] running `"docker" "start" "-a" "7f82aba4f1aa7f01aafc1632e7364ff5034a7be798d80a119675ce5c94ebdce7"`
[INFO] [stderr]    Compiling rcat v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] error[E0599]: no method named `st_blksize` found for type `std::fs::Metadata` in the current scope
[INFO] [stderr]   --> src/file_helper.rs:33:40
[INFO] [stderr]    |
[INFO] [stderr] 33 |             return Result::Ok(metadata.st_blksize());
[INFO] [stderr]    |                                        ^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: items from traits can only be used if the trait is in scope
[INFO] [stderr]    = note: the following trait is implemented but not in scope, perhaps add a `use` for it:
[INFO] [stderr]            `use std::os::linux::fs::MetadataExt;`
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0599`.
[INFO] [stderr] error: Could not compile `rcat`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "7f82aba4f1aa7f01aafc1632e7364ff5034a7be798d80a119675ce5c94ebdce7"`
[INFO] running `"docker" "rm" "-f" "7f82aba4f1aa7f01aafc1632e7364ff5034a7be798d80a119675ce5c94ebdce7"`
[INFO] [stdout] 7f82aba4f1aa7f01aafc1632e7364ff5034a7be798d80a119675ce5c94ebdce7