[INFO] updating cached repository https://github.com/alisha17/RustyFileOperations
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune", kill_on_drop: false }`
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] c9eb0293c31961cc0daa465bc8a827dc57332da4
[INFO] checking alisha17/RustyFileOperations against try#5fdfba63a96c5e8ae0ebf6b8b66853110277087d for pr-73166
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Falisha17%2FRustyFileOperations" "/workspace/builds/worker-10/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-10/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/alisha17/RustyFileOperations on toolchain 5fdfba63a96c5e8ae0ebf6b8b66853110277087d
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+5fdfba63a96c5e8ae0ebf6b8b66853110277087d" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/alisha17/RustyFileOperations
[INFO] finished tweaking git repo https://github.com/alisha17/RustyFileOperations
[INFO] tweaked toml for git repo https://github.com/alisha17/RustyFileOperations written to /workspace/builds/worker-10/source/Cargo.toml
[INFO] crate git repo https://github.com/alisha17/RustyFileOperations already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+5fdfba63a96c5e8ae0ebf6b8b66853110277087d" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+5fdfba63a96c5e8ae0ebf6b8b66853110277087d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f6a259bb766f73f413bd4682036be3429e4aa681e17a7409765442a4724b0ae0
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "f6a259bb766f73f413bd4682036be3429e4aa681e17a7409765442a4724b0ae0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f6a259bb766f73f413bd4682036be3429e4aa681e17a7409765442a4724b0ae0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f6a259bb766f73f413bd4682036be3429e4aa681e17a7409765442a4724b0ae0", kill_on_drop: false }`
[INFO] [stdout] f6a259bb766f73f413bd4682036be3429e4aa681e17a7409765442a4724b0ae0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+5fdfba63a96c5e8ae0ebf6b8b66853110277087d" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2676e4e19c304079a06e680ad68282cbbfe80ecc0d9fba72ba745fb0e3a87b46
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "2676e4e19c304079a06e680ad68282cbbfe80ecc0d9fba72ba745fb0e3a87b46", kill_on_drop: false }`
[INFO] [stderr]     Checking fileoperations v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: use of deprecated item 'std::error::Error::description': use the Display impl or to_string()
[INFO] [stdout]   --> src/main.rs:14:60
[INFO] [stdout]    |
[INFO] [stdout] 14 |         Err(why) => panic!("couldn't open due to: {}", why.description()),
[INFO] [stdout]    |                                                            ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'std::error::Error::description': use the Display impl or to_string()
[INFO] [stdout]   --> src/main.rs:14:60
[INFO] [stdout]    |
[INFO] [stdout] 14 |         Err(why) => panic!("couldn't open due to: {}", why.description()),
[INFO] [stdout]    |                                                            ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'std::error::Error::description': use the Display impl or to_string()
[INFO] [stdout]   --> src/main.rs:21:60
[INFO] [stdout]    |
[INFO] [stdout] 21 |         Err(why) => panic!("couldn't read due to: {}", why.description()),
[INFO] [stdout]    |                                                            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'std::error::Error::description': use the Display impl or to_string()
[INFO] [stdout]   --> src/main.rs:29:62
[INFO] [stdout]    |
[INFO] [stdout] 29 |         Err(why) => panic!("couldn't create due to: {}", why.description()),
[INFO] [stdout]    |                                                              ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'std::error::Error::description': use the Display impl or to_string()
[INFO] [stdout]   --> src/main.rs:35:53
[INFO] [stdout]    |
[INFO] [stdout] 35 |             panic!("couldn't write due to: {}", why.description())
[INFO] [stdout]    |                                                     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'std::error::Error::description': use the Display impl or to_string()
[INFO] [stdout]   --> src/main.rs:21:60
[INFO] [stdout]    |
[INFO] [stdout] 21 |         Err(why) => panic!("couldn't read due to: {}", why.description()),
[INFO] [stdout]    |                                                            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'std::error::Error::description': use the Display impl or to_string()
[INFO] [stdout]   --> src/main.rs:29:62
[INFO] [stdout]    |
[INFO] [stdout] 29 |         Err(why) => panic!("couldn't create due to: {}", why.description()),
[INFO] [stdout]    |                                                              ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'std::error::Error::description': use the Display impl or to_string()
[INFO] [stdout]   --> src/main.rs:35:53
[INFO] [stdout]    |
[INFO] [stdout] 35 |             panic!("couldn't write due to: {}", why.description())
[INFO] [stdout]    |                                                     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.22s
[INFO] running `Command { std: "docker" "inspect" "2676e4e19c304079a06e680ad68282cbbfe80ecc0d9fba72ba745fb0e3a87b46", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2676e4e19c304079a06e680ad68282cbbfe80ecc0d9fba72ba745fb0e3a87b46", kill_on_drop: false }`
[INFO] [stdout] 2676e4e19c304079a06e680ad68282cbbfe80ecc0d9fba72ba745fb0e3a87b46