[INFO] fetching crate chess_clock 0.1.1...
[INFO] testing chess_clock-0.1.1 against beta-2021-09-08 for beta-1.56-1
[INFO] extracting crate chess_clock 0.1.1 into /workspace/builds/worker-13/source
[INFO] validating manifest of crates.io crate chess_clock 0.1.1 on toolchain beta-2021-09-08
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate chess_clock 0.1.1
[INFO] finished tweaking crates.io crate chess_clock 0.1.1
[INFO] tweaked toml for crates.io crate chess_clock 0.1.1 written to /workspace/builds/worker-13/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "fetch" "--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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "metadata" "--no-deps" "--format-version=1", 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] 6a644fc897ba7a69118eca067b4967276b7639dfb72ed4457acb9051dfba0cb6
[INFO] running `Command { std: "docker" "start" "-a" "6a644fc897ba7a69118eca067b4967276b7639dfb72ed4457acb9051dfba0cb6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6a644fc897ba7a69118eca067b4967276b7639dfb72ed4457acb9051dfba0cb6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6a644fc897ba7a69118eca067b4967276b7639dfb72ed4457acb9051dfba0cb6", kill_on_drop: false }`
[INFO] [stdout] 6a644fc897ba7a69118eca067b4967276b7639dfb72ed4457acb9051dfba0cb6
[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=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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "build" "--frozen" "--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] 43a4a381c3a53eaa3ff2f07cf93c9afa3af160fb3bbee4c626d578fb122ab328
[INFO] running `Command { std: "docker" "start" "-a" "43a4a381c3a53eaa3ff2f07cf93c9afa3af160fb3bbee4c626d578fb122ab328", kill_on_drop: false }`
[INFO] [stderr]    Compiling chess_clock v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]   --> src/lib.rs:65:1
[INFO] [stdout]    |
[INFO] [stdout] 65 | #![feature(duration_as_u128)]
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/chess_clock.rs:110:17
[INFO] [stdout]     |
[INFO] [stdout] 110 |     expire: Box<Future<Item = (), Error = ()> + Send>,
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Future<Item = (), Error = ()> + Send`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error; 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `chess_clock` due to 2 previous errors; 1 warning emitted
[INFO] running `Command { std: "docker" "inspect" "43a4a381c3a53eaa3ff2f07cf93c9afa3af160fb3bbee4c626d578fb122ab328", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "43a4a381c3a53eaa3ff2f07cf93c9afa3af160fb3bbee4c626d578fb122ab328", kill_on_drop: false }`
[INFO] [stdout] 43a4a381c3a53eaa3ff2f07cf93c9afa3af160fb3bbee4c626d578fb122ab328