[INFO] cloning repository https://github.com/serproqnx/sweeper_rs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/serproqnx/sweeper_rs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fserproqnx%2Fsweeper_rs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fserproqnx%2Fsweeper_rs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 498b25675c71d49a2685b0a76f1b532fff7a8999
[INFO] testing serproqnx/sweeper_rs against beta-2022-04-10 for beta-1.61-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fserproqnx%2Fsweeper_rs" "/workspace/builds/worker-22/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-22/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/serproqnx/sweeper_rs on toolchain beta-2022-04-10
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/serproqnx/sweeper_rs
[INFO] finished tweaking git repo https://github.com/serproqnx/sweeper_rs
[INFO] tweaked toml for git repo https://github.com/serproqnx/sweeper_rs written to /workspace/builds/worker-22/source/Cargo.toml
[INFO] crate git repo https://github.com/serproqnx/sweeper_rs already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-22/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-22/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" "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" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 56f3f1d14c371b745228431c04e9f2bd14fff80e7585ce6a149a1b8c8e3be07d
[INFO] running `Command { std: "docker" "start" "-a" "56f3f1d14c371b745228431c04e9f2bd14fff80e7585ce6a149a1b8c8e3be07d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "56f3f1d14c371b745228431c04e9f2bd14fff80e7585ce6a149a1b8c8e3be07d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "56f3f1d14c371b745228431c04e9f2bd14fff80e7585ce6a149a1b8c8e3be07d", kill_on_drop: false }`
[INFO] [stdout] 56f3f1d14c371b745228431c04e9f2bd14fff80e7585ce6a149a1b8c8e3be07d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-22/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-22/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" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b3e257227a2c980a050d056014d25936615d11541de4ae951d1061db22ea7181
[INFO] running `Command { std: "docker" "start" "-a" "b3e257227a2c980a050d056014d25936615d11541de4ae951d1061db22ea7181", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling libc v0.2.98
[INFO] [stderr]    Compiling time v0.1.44
[INFO] [stderr]    Compiling dirs-sys v0.3.6
[INFO] [stderr]    Compiling directories v3.0.2
[INFO] [stderr]    Compiling chrono v0.4.19
[INFO] [stderr]    Compiling sweeper_rs v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/clean.rs:38:4
[INFO] [stdout]    |
[INFO] [stdout] 38 |             fs::remove_dir_all(&item);
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 10.68s
[INFO] running `Command { std: "docker" "inspect" "b3e257227a2c980a050d056014d25936615d11541de4ae951d1061db22ea7181", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b3e257227a2c980a050d056014d25936615d11541de4ae951d1061db22ea7181", kill_on_drop: false }`
[INFO] [stdout] b3e257227a2c980a050d056014d25936615d11541de4ae951d1061db22ea7181
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-22/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-22/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" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 347a299827b481f8da5fa9bc78b535a36efca147f007c8f5679a4ae1a6b49887
[INFO] running `Command { std: "docker" "start" "-a" "347a299827b481f8da5fa9bc78b535a36efca147f007c8f5679a4ae1a6b49887", kill_on_drop: false }`
[INFO] [stderr]    Compiling sweeper_rs v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/clean.rs:38:4
[INFO] [stdout]    |
[INFO] [stdout] 38 |             fs::remove_dir_all(&item);
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.74s
[INFO] [stderr]   Executable unittests src/main.rs (/opt/rustwide/target/debug/deps/sweeper_rs-1f4df0c9c82dad80)
[INFO] running `Command { std: "docker" "inspect" "347a299827b481f8da5fa9bc78b535a36efca147f007c8f5679a4ae1a6b49887", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "347a299827b481f8da5fa9bc78b535a36efca147f007c8f5679a4ae1a6b49887", kill_on_drop: false }`
[INFO] [stdout] 347a299827b481f8da5fa9bc78b535a36efca147f007c8f5679a4ae1a6b49887
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-22/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-22/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" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 5e2c35425e3dee20e87488030fa4b8768d1a7a653808c26e45bc4cb45b011ca4
[INFO] running `Command { std: "docker" "start" "-a" "5e2c35425e3dee20e87488030fa4b8768d1a7a653808c26e45bc4cb45b011ca4", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr] warning: unused `Result` that must be used
[INFO] [stderr]   --> src/clean.rs:38:4
[INFO] [stderr]    |
[INFO] [stderr] 38 |             fs::remove_dir_all(&item);
[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: `sweeper_rs` (bin "sweeper_rs" test) generated 1 warning
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.50s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/sweeper_rs-1f4df0c9c82dad80)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "5e2c35425e3dee20e87488030fa4b8768d1a7a653808c26e45bc4cb45b011ca4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5e2c35425e3dee20e87488030fa4b8768d1a7a653808c26e45bc4cb45b011ca4", kill_on_drop: false }`
[INFO] [stdout] 5e2c35425e3dee20e87488030fa4b8768d1a7a653808c26e45bc4cb45b011ca4