[INFO] updating cached repository vaithak/scp-rust
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/vaithak/scp-rust
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/vaithak/scp-rust" "work/ex/pr-63565/sources/master#c43d03a19f326f4a323569328cc501e86eb6d22e/gh/vaithak/scp-rust"`
[INFO] [stderr] Cloning into 'work/ex/pr-63565/sources/master#c43d03a19f326f4a323569328cc501e86eb6d22e/gh/vaithak/scp-rust'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/vaithak/scp-rust" "work/ex/pr-63565/sources/try#75eff020d0923c035c2fe220db4a0465cd847048/gh/vaithak/scp-rust"`
[INFO] [stderr] Cloning into 'work/ex/pr-63565/sources/try#75eff020d0923c035c2fe220db4a0465cd847048/gh/vaithak/scp-rust'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 47cf0dc49873a5a66399ae4fdb9cde2187dd91bf
[INFO] sha for GitHub repo vaithak/scp-rust: 47cf0dc49873a5a66399ae4fdb9cde2187dd91bf
[INFO] validating manifest of vaithak/scp-rust on toolchain master#c43d03a19f326f4a323569328cc501e86eb6d22e
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c43d03a19f326f4a323569328cc501e86eb6d22e-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of vaithak/scp-rust on toolchain try#75eff020d0923c035c2fe220db4a0465cd847048
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+75eff020d0923c035c2fe220db4a0465cd847048-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing vaithak/scp-rust
[INFO] finished frobbing vaithak/scp-rust
[INFO] frobbed toml for vaithak/scp-rust written to work/ex/pr-63565/sources/master#c43d03a19f326f4a323569328cc501e86eb6d22e/gh/vaithak/scp-rust/Cargo.toml
[INFO] started frobbing vaithak/scp-rust
[INFO] finished frobbing vaithak/scp-rust
[INFO] frobbed toml for vaithak/scp-rust written to work/ex/pr-63565/sources/try#75eff020d0923c035c2fe220db4a0465cd847048/gh/vaithak/scp-rust/Cargo.toml
[INFO] crate vaithak/scp-rust already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c43d03a19f326f4a323569328cc501e86eb6d22e-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+75eff020d0923c035c2fe220db4a0465cd847048-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] checking vaithak/scp-rust against try#75eff020d0923c035c2fe220db4a0465cd847048 for pr-63565
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-63565/worker-3/try#75eff020d0923c035c2fe220db4a0465cd847048:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-63565/sources/try#75eff020d0923c035c2fe220db4a0465cd847048/gh/vaithak/scp-rust:/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=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" "+75eff020d0923c035c2fe220db4a0465cd847048-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 36ec39254e1a789b29b7caf83bcdee09a8cd51d935c3725999dc5618c975c388
[INFO] running `"docker" "start" "-a" "36ec39254e1a789b29b7caf83bcdee09a8cd51d935c3725999dc5618c975c388"`
[INFO] [stderr]     Checking scp v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused variable: `dest_path`
[INFO] [stderr]  --> src/main.rs:9:40
[INFO] [stderr]   |
[INFO] [stderr] 9 | fn recursive_copy(source_path: String, dest_path: String) {
[INFO] [stderr]   |                                        ^^^^^^^^^ help: consider prefixing with an underscore: `_dest_path`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/main.rs:18:5
[INFO] [stderr]    |
[INFO] [stderr] 18 |     fs::copy(source_path, dest_path);  // Copy foo.txt to bar.txt
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `dest_path`
[INFO] [stderr]  --> src/main.rs:9:40
[INFO] [stderr]   |
[INFO] [stderr] 9 | fn recursive_copy(source_path: String, dest_path: String) {
[INFO] [stderr]   |                                        ^^^^^^^^^ help: consider prefixing with an underscore: `_dest_path`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/main.rs:18:5
[INFO] [stderr]    |
[INFO] [stderr] 18 |     fs::copy(source_path, dest_path);  // Copy foo.txt to bar.txt
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.46s
[INFO] running `"docker" "inspect" "36ec39254e1a789b29b7caf83bcdee09a8cd51d935c3725999dc5618c975c388"`
[INFO] running `"docker" "rm" "-f" "36ec39254e1a789b29b7caf83bcdee09a8cd51d935c3725999dc5618c975c388"`
[INFO] [stdout] 36ec39254e1a789b29b7caf83bcdee09a8cd51d935c3725999dc5618c975c388