[INFO] fetching crate maybe-owned 0.3.4...
[INFO] checking maybe-owned-0.3.4 against try#b0d0ea232bdae12fa8da8491a91ae1db029990ef for pr-84037
[INFO] extracting crate maybe-owned 0.3.4 into /workspace/builds/worker-13/source
[INFO] validating manifest of crates.io crate maybe-owned 0.3.4 on toolchain b0d0ea232bdae12fa8da8491a91ae1db029990ef
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b0d0ea232bdae12fa8da8491a91ae1db029990ef" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate maybe-owned 0.3.4
[INFO] finished tweaking crates.io crate maybe-owned 0.3.4
[INFO] tweaked toml for crates.io crate maybe-owned 0.3.4 written to /workspace/builds/worker-13/source/Cargo.toml
[INFO] crate crates.io crate maybe-owned 0.3.4 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b0d0ea232bdae12fa8da8491a91ae1db029990ef" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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" "+b0d0ea232bdae12fa8da8491a91ae1db029990ef" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f325fc56fb440051b931f2964957f8bc020119c363faf4342c40c3f078a833e6
[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" "f325fc56fb440051b931f2964957f8bc020119c363faf4342c40c3f078a833e6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f325fc56fb440051b931f2964957f8bc020119c363faf4342c40c3f078a833e6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f325fc56fb440051b931f2964957f8bc020119c363faf4342c40c3f078a833e6", kill_on_drop: false }`
[INFO] [stdout] f325fc56fb440051b931f2964957f8bc020119c363faf4342c40c3f078a833e6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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" "+b0d0ea232bdae12fa8da8491a91ae1db029990ef" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c6d02ec79c034ceec8bc392439a5312fbe328d77345e67fc4a8e76e7f415b5d0
[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" "c6d02ec79c034ceec8bc392439a5312fbe328d77345e67fc4a8e76e7f415b5d0", kill_on_drop: false }`
[INFO] [stderr]    Compiling unicode-xid v0.2.0
[INFO] [stderr]    Compiling syn v1.0.23
[INFO] [stderr]    Compiling serde v1.0.110
[INFO] [stderr]     Checking itoa v0.4.5
[INFO] [stderr]     Checking maybe-owned v0.3.4 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling proc-macro2 v1.0.13
[INFO] [stderr]    Compiling quote v1.0.6
[INFO] [stderr]     Checking serde_json v1.0.53
[INFO] [stderr]    Compiling serde_derive v1.0.110
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib.rs:630:17
[INFO] [stdout]     |
[INFO] [stdout] 630 |         let _ = AsRef::<u8>::borrow(&v);
[INFO] [stdout]     |                 ^^^^^^^^^^^ help: use `dyn`: `<dyn AsRef::<u8>>`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib.rs:633:17
[INFO] [stdout]     |
[INFO] [stdout] 633 |         let _ = AsRef::<u8>::borrow(&v);
[INFO] [stdout]     |                 ^^^^^^^^^^^ help: use `dyn`: `<dyn AsRef::<u8>>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib.rs:647:17
[INFO] [stdout]     |
[INFO] [stdout] 647 |         let _ = AsMut::<u8>::borrow_mut(&mut v);
[INFO] [stdout]     |                 ^^^^^^^^^^^ help: use `dyn`: `<dyn AsMut::<u8>>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 21.12s
[INFO] running `Command { std: "docker" "inspect" "c6d02ec79c034ceec8bc392439a5312fbe328d77345e67fc4a8e76e7f415b5d0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c6d02ec79c034ceec8bc392439a5312fbe328d77345e67fc4a8e76e7f415b5d0", kill_on_drop: false }`
[INFO] [stdout] c6d02ec79c034ceec8bc392439a5312fbe328d77345e67fc4a8e76e7f415b5d0