[INFO] fetching crate internship 0.6.0...
[INFO] checking internship-0.6.0 against master#0a8629bff642c3c3b84bb644c0099194f063b627 for pr-86231
[INFO] extracting crate internship 0.6.0 into /workspace/builds/worker-0/source
[INFO] validating manifest of crates.io crate internship 0.6.0 on toolchain 0a8629bff642c3c3b84bb644c0099194f063b627
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+0a8629bff642c3c3b84bb644c0099194f063b627" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate internship 0.6.0
[INFO] finished tweaking crates.io crate internship 0.6.0
[INFO] tweaked toml for crates.io crate internship 0.6.0 written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+0a8629bff642c3c3b84bb644c0099194f063b627" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+0a8629bff642c3c3b84bb644c0099194f063b627" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+0a8629bff642c3c3b84bb644c0099194f063b627" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 7babc0877fb18e0be6ac2c885701aa9d2bc5cf5c4cf12f60425bb2e3da608eba
[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" "7babc0877fb18e0be6ac2c885701aa9d2bc5cf5c4cf12f60425bb2e3da608eba", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7babc0877fb18e0be6ac2c885701aa9d2bc5cf5c4cf12f60425bb2e3da608eba", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7babc0877fb18e0be6ac2c885701aa9d2bc5cf5c4cf12f60425bb2e3da608eba", kill_on_drop: false }`
[INFO] [stdout] 7babc0877fb18e0be6ac2c885701aa9d2bc5cf5c4cf12f60425bb2e3da608eba
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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=forbid" "-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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+0a8629bff642c3c3b84bb644c0099194f063b627" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 9762e38febb49c9d4f2f94969097ccd23b24a6758691bc7c6c29b661634f4e20
[INFO] running `Command { std: "docker" "start" "-a" "9762e38febb49c9d4f2f94969097ccd23b24a6758691bc7c6c29b661634f4e20", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde v1.0.126
[INFO] [stderr]     Checking internship v0.6.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused return value of `std::mem::replace` that must be used
[INFO] [stdout]    --> src/handle.rs:267:13
[INFO] [stdout]     |
[INFO] [stdout] 267 |             replace(&mut *pool.borrow_mut(), prev_pool);
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]     = note: if you don't need the old value, you can just assign the new value directly
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 6.93s
[INFO] running `Command { std: "docker" "inspect" "9762e38febb49c9d4f2f94969097ccd23b24a6758691bc7c6c29b661634f4e20", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9762e38febb49c9d4f2f94969097ccd23b24a6758691bc7c6c29b661634f4e20", kill_on_drop: false }`
[INFO] [stdout] 9762e38febb49c9d4f2f94969097ccd23b24a6758691bc7c6c29b661634f4e20