[INFO] cloning repository https://github.com/Artemocka/tmp_clear_rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Artemocka/tmp_clear_rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FArtemocka%2Ftmp_clear_rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FArtemocka%2Ftmp_clear_rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 51ca758a819a48ec695cf63b198b55d1f3879c69
[INFO] testing Artemocka/tmp_clear_rust against 1.54.0 for beta-1.55-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FArtemocka%2Ftmp_clear_rust" "/workspace/builds/worker-4/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Artemocka/tmp_clear_rust on toolchain 1.54.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Artemocka/tmp_clear_rust
[INFO] finished tweaking git repo https://github.com/Artemocka/tmp_clear_rust
[INFO] tweaked toml for git repo https://github.com/Artemocka/tmp_clear_rust written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/Artemocka/tmp_clear_rust already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+1.54.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] da48265b6e5d8450f1bd8a6dadd6a77efc3bffab724a70ebf881268baa2be351
[INFO] running `Command { std: "docker" "start" "-a" "da48265b6e5d8450f1bd8a6dadd6a77efc3bffab724a70ebf881268baa2be351", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "da48265b6e5d8450f1bd8a6dadd6a77efc3bffab724a70ebf881268baa2be351", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "da48265b6e5d8450f1bd8a6dadd6a77efc3bffab724a70ebf881268baa2be351", kill_on_drop: false }`
[INFO] [stdout] da48265b6e5d8450f1bd8a6dadd6a77efc3bffab724a70ebf881268baa2be351
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+1.54.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c4ee10ba512ac6492ddd263bc35ed8769648cd4d9a2a2ecb1df65471a253663e
[INFO] running `Command { std: "docker" "start" "-a" "c4ee10ba512ac6492ddd263bc35ed8769648cd4d9a2a2ecb1df65471a253663e", kill_on_drop: false }`
[INFO] [stderr]    Compiling tmp v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::path::Path`
[INFO] [stdout]  --> src/main.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::path::Path;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/main.rs:22:5
[INFO] [stdout]    |
[INFO] [stdout] 22 |     clear_tmp_dir();
[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: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: failed to remove file `/opt/rustwide/target/debug/tmp`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   Is a directory (os error 21)
[INFO] running `Command { std: "docker" "inspect" "c4ee10ba512ac6492ddd263bc35ed8769648cd4d9a2a2ecb1df65471a253663e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c4ee10ba512ac6492ddd263bc35ed8769648cd4d9a2a2ecb1df65471a253663e", kill_on_drop: false }`
[INFO] [stdout] c4ee10ba512ac6492ddd263bc35ed8769648cd4d9a2a2ecb1df65471a253663e