[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/beta-1.37-6/sources/1.36.0/gh/jmcelwain/the_linux_programming_interface"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/1.36.0/gh/jmcelwain/the_linux_programming_interface'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/jmcelwain/the_linux_programming_interface" "work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/jmcelwain/the_linux_programming_interface"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/beta-2019-07-23/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 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 jmcelwain/the_linux_programming_interface 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 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/beta-1.37-6/sources/1.36.0/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/beta-1.37-6/sources/beta-2019-07-23/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/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache lock
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] testing jmcelwain/the_linux_programming_interface 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/jmcelwain/the_linux_programming_interface:/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] 8bc4686925bec9eb1bb6df7229aacdacc3af67f68df1f5f50b279edd39f32f5b
[INFO] running `"docker" "start" "-a" "8bc4686925bec9eb1bb6df7229aacdacc3af67f68df1f5f50b279edd39f32f5b"`
[INFO] [stderr]    Compiling 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]     Finished dev [unoptimized + debuginfo] target(s) in 0.43s
[INFO] running `"docker" "inspect" "8bc4686925bec9eb1bb6df7229aacdacc3af67f68df1f5f50b279edd39f32f5b"`
[INFO] running `"docker" "rm" "-f" "8bc4686925bec9eb1bb6df7229aacdacc3af67f68df1f5f50b279edd39f32f5b"`
[INFO] [stdout] 8bc4686925bec9eb1bb6df7229aacdacc3af67f68df1f5f50b279edd39f32f5b
[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/jmcelwain/the_linux_programming_interface:/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] 3261de3be7fb4037380f77fe4b46608feb28e5d627334737a026d835dfcd2866
[INFO] running `"docker" "start" "-a" "3261de3be7fb4037380f77fe4b46608feb28e5d627334737a026d835dfcd2866"`
[INFO] [stderr]    Compiling 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]     Finished dev [unoptimized + debuginfo] target(s) in 0.59s
[INFO] running `"docker" "inspect" "3261de3be7fb4037380f77fe4b46608feb28e5d627334737a026d835dfcd2866"`
[INFO] running `"docker" "rm" "-f" "3261de3be7fb4037380f77fe4b46608feb28e5d627334737a026d835dfcd2866"`
[INFO] [stdout] 3261de3be7fb4037380f77fe4b46608feb28e5d627334737a026d835dfcd2866
[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/jmcelwain/the_linux_programming_interface:/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] 4275516e22fefa5f9a79f0dbb0a7e65cc11a4c81bd15c1c3db34272800feb607
[INFO] running `"docker" "start" "-a" "4275516e22fefa5f9a79f0dbb0a7e65cc11a4c81bd15c1c3db34272800feb607"`
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stdout] running 0 tests
[INFO] [stderr]      Running /opt/crater/target/debug/deps/linux_interface-a8b339a4b80d95f1
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "4275516e22fefa5f9a79f0dbb0a7e65cc11a4c81bd15c1c3db34272800feb607"`
[INFO] running `"docker" "rm" "-f" "4275516e22fefa5f9a79f0dbb0a7e65cc11a4c81bd15c1c3db34272800feb607"`
[INFO] [stdout] 4275516e22fefa5f9a79f0dbb0a7e65cc11a4c81bd15c1c3db34272800feb607