[INFO] crate corroded_drone 0.1.7 is already in cache
[INFO] checking corroded_drone-0.1.7 against master#fdc0011561c6365c596dfd8fa1ef388162bc89c7 for pr-66504-1
[INFO] extracting crate corroded_drone 0.1.7 into /workspace/builds/worker-2/source
[INFO] validating manifest of crates.io crate corroded_drone 0.1.7 on toolchain fdc0011561c6365c596dfd8fa1ef388162bc89c7
[INFO] running `"/workspace/cargo-home/bin/cargo" "+fdc0011561c6365c596dfd8fa1ef388162bc89c7" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate corroded_drone 0.1.7
[INFO] finished tweaking crates.io crate corroded_drone 0.1.7
[INFO] tweaked toml for crates.io crate corroded_drone 0.1.7 written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate crates.io crate corroded_drone 0.1.7 already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+fdc0011561c6365c596dfd8fa1ef388162bc89c7" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "/opt/rustwide/cargo-home/bin/cargo" "+fdc0011561c6365c596dfd8fa1ef388162bc89c7" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 2327d0dbdc57f48742f64289bf7531e29390873dd77f3bbef49b308e3a4ebb11
[INFO] running `"docker" "start" "-a" "2327d0dbdc57f48742f64289bf7531e29390873dd77f3bbef49b308e3a4ebb11"`
[INFO] [stderr]     Checking corroded_drone v0.1.7 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]  --> examples/take_off.rs:9:5
[INFO] [stderr]   |
[INFO] [stderr] 9 |     drone.take_off();
[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 `std::result::Result` that must be used
[INFO] [stderr]   --> examples/take_off.rs:11:5
[INFO] [stderr]    |
[INFO] [stderr] 11 |     drone.land();
[INFO] [stderr]    |     ^^^^^^^^^^^^^
[INFO] [stderr]    |
[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 0.39s
[INFO] running `"docker" "inspect" "2327d0dbdc57f48742f64289bf7531e29390873dd77f3bbef49b308e3a4ebb11"`
[INFO] running `"docker" "rm" "-f" "2327d0dbdc57f48742f64289bf7531e29390873dd77f3bbef49b308e3a4ebb11"`
[INFO] [stdout] 2327d0dbdc57f48742f64289bf7531e29390873dd77f3bbef49b308e3a4ebb11