[INFO] updating cached repository jmcelwain/the_linux_programming_interface
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/jmcelwain/the_linux_programming_interface
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/jmcelwain/the_linux_programming_interface" "work/ex/pr-59199/sources/master#bc44841ad2a2ad5f6c5e67b9e35ed8e7e71d4dc7/gh/jmcelwain/the_linux_programming_interface"`
[INFO] [stderr] Cloning into 'work/ex/pr-59199/sources/master#bc44841ad2a2ad5f6c5e67b9e35ed8e7e71d4dc7/gh/jmcelwain/the_linux_programming_interface'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/jmcelwain/the_linux_programming_interface" "work/ex/pr-59199/sources/try#68fcf881bd1e4dbfc21e22f8c7a56b8a5d8e8f7b/gh/jmcelwain/the_linux_programming_interface"`
[INFO] [stderr] Cloning into 'work/ex/pr-59199/sources/try#68fcf881bd1e4dbfc21e22f8c7a56b8a5d8e8f7b/gh/jmcelwain/the_linux_programming_interface'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 20d87244e4a21b0c11f1818de6e85d89b1648b19
[INFO] sha for GitHub repo jmcelwain/the_linux_programming_interface: 20d87244e4a21b0c11f1818de6e85d89b1648b19
[INFO] validating manifest of jmcelwain/the_linux_programming_interface on toolchain master#bc44841ad2a2ad5f6c5e67b9e35ed8e7e71d4dc7
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+bc44841ad2a2ad5f6c5e67b9e35ed8e7e71d4dc7-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of jmcelwain/the_linux_programming_interface on toolchain try#68fcf881bd1e4dbfc21e22f8c7a56b8a5d8e8f7b
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+68fcf881bd1e4dbfc21e22f8c7a56b8a5d8e8f7b-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing jmcelwain/the_linux_programming_interface
[INFO] finished frobbing jmcelwain/the_linux_programming_interface
[INFO] frobbed toml for jmcelwain/the_linux_programming_interface written to work/ex/pr-59199/sources/master#bc44841ad2a2ad5f6c5e67b9e35ed8e7e71d4dc7/gh/jmcelwain/the_linux_programming_interface/Cargo.toml
[INFO] started frobbing jmcelwain/the_linux_programming_interface
[INFO] finished frobbing jmcelwain/the_linux_programming_interface
[INFO] frobbed toml for jmcelwain/the_linux_programming_interface written to work/ex/pr-59199/sources/try#68fcf881bd1e4dbfc21e22f8c7a56b8a5d8e8f7b/gh/jmcelwain/the_linux_programming_interface/Cargo.toml
[INFO] crate jmcelwain/the_linux_programming_interface already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+bc44841ad2a2ad5f6c5e67b9e35ed8e7e71d4dc7-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+68fcf881bd1e4dbfc21e22f8c7a56b8a5d8e8f7b-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking jmcelwain/the_linux_programming_interface against try#68fcf881bd1e4dbfc21e22f8c7a56b8a5d8e8f7b for pr-59199
[INFO] running `"docker" "create" "-v" "/mnt/crater-raid/crater/work/local/target-dirs/pr-59199/worker-6/try#68fcf881bd1e4dbfc21e22f8c7a56b8a5d8e8f7b:/opt/crater/target:rw,Z" "-v" "/mnt/crater-raid/crater/work/ex/pr-59199/sources/try#68fcf881bd1e4dbfc21e22f8c7a56b8a5d8e8f7b/gh/jmcelwain/the_linux_programming_interface:/opt/crater/workdir:ro,Z" "-v" "/mnt/crater-raid/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/crater-raid/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=forbid" "-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" "+68fcf881bd1e4dbfc21e22f8c7a56b8a5d8e8f7b-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 9b97b8501f7939e8107a439445e0508fcafe1407acd2ca3e25a9e77c532bbb58
[INFO] running `"docker" "start" "-a" "9b97b8501f7939e8107a439445e0508fcafe1407acd2ca3e25a9e77c532bbb58"`
[INFO] [stderr]     Checking linux_interface v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused variable: `to_path`
[INFO] [stderr]  --> src/fileio/copy.rs:6:9
[INFO] [stderr]   |
[INFO] [stderr] 6 |     let to_path = Path::new(to);
[INFO] [stderr]   |         ^^^^^^^ help: consider prefixing with an underscore: `_to_path`
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `file`
[INFO] [stderr]  --> src/fileio/copy.rs:8:9
[INFO] [stderr]   |
[INFO] [stderr] 8 |     let file = match File::open(&from) {
[INFO] [stderr]   |         ^^^^ help: consider prefixing with an underscore: `_file`
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `copy`
[INFO] [stderr]  --> src/fileio/copy.rs:4:1
[INFO] [stderr]   |
[INFO] [stderr] 4 | pub fn copy(from: &String, to: &String) {
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `to_path`
[INFO] [stderr]  --> src/fileio/copy.rs:6:9
[INFO] [stderr]   |
[INFO] [stderr] 6 |     let to_path = Path::new(to);
[INFO] [stderr]   |         ^^^^^^^ help: consider prefixing with an underscore: `_to_path`
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `file`
[INFO] [stderr]  --> src/fileio/copy.rs:8:9
[INFO] [stderr]   |
[INFO] [stderr] 8 |     let file = match File::open(&from) {
[INFO] [stderr]   |         ^^^^ help: consider prefixing with an underscore: `_file`
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `copy`
[INFO] [stderr]  --> src/fileio/copy.rs:4:1
[INFO] [stderr]   |
[INFO] [stderr] 4 | pub fn copy(from: &String, to: &String) {
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.34s
[INFO] running `"docker" "inspect" "9b97b8501f7939e8107a439445e0508fcafe1407acd2ca3e25a9e77c532bbb58"`
[INFO] running `"docker" "rm" "-f" "9b97b8501f7939e8107a439445e0508fcafe1407acd2ca3e25a9e77c532bbb58"`
[INFO] [stdout] 9b97b8501f7939e8107a439445e0508fcafe1407acd2ca3e25a9e77c532bbb58