[INFO] crate hars 0.1.0 is already in cache
[INFO] testing hars-0.1.0 against beta-2020-07-24 for beta-1.46-1
[INFO] extracting crate hars 0.1.0 into /workspace/builds/worker-7/source
[INFO] validating manifest of crates.io crate hars 0.1.0 on toolchain beta-2020-07-24
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-07-24" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate hars 0.1.0
[INFO] finished tweaking crates.io crate hars 0.1.0
[INFO] tweaked toml for crates.io crate hars 0.1.0 written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate crates.io crate hars 0.1.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-07-24" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-07-24" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c73c13022973ae48e5762af3c518887c38e79aa2c71a8b06fa578fbc15cc0ae7
[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" "c73c13022973ae48e5762af3c518887c38e79aa2c71a8b06fa578fbc15cc0ae7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c73c13022973ae48e5762af3c518887c38e79aa2c71a8b06fa578fbc15cc0ae7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c73c13022973ae48e5762af3c518887c38e79aa2c71a8b06fa578fbc15cc0ae7", kill_on_drop: false }`
[INFO] [stdout] c73c13022973ae48e5762af3c518887c38e79aa2c71a8b06fa578fbc15cc0ae7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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=warn" "-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@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-07-24" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ae047a011c2ccdade8837501959dd3d122741186b52cad41d1edea048ec6e354
[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" "ae047a011c2ccdade8837501959dd3d122741186b52cad41d1edea048ec6e354", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.14
[INFO] [stderr]    Compiling regex-syntax v0.6.13
[INFO] [stderr]    Compiling futures-channel v0.3.1
[INFO] [stderr]    Compiling idna v0.1.5
[INFO] [stderr]    Compiling directories v2.0.2
[INFO] [stderr]    Compiling url v1.7.2
[INFO] [stderr]    Compiling cookie v0.12.0
[INFO] [stderr]    Compiling regex v1.3.3
[INFO] [stderr]    Compiling publicsuffix v1.5.4
[INFO] [stderr]    Compiling console v0.9.2
[INFO] [stderr]    Compiling serde_derive v1.0.104
[INFO] [stderr]    Compiling proc-macro-hack v0.5.11
[INFO] [stderr]    Compiling tokio-macros v0.2.3
[INFO] [stderr]    Compiling pin-project-internal v0.4.7
[INFO] [stderr]    Compiling tokio v0.2.10
[INFO] [stderr]    Compiling futures-macro v0.3.1
[INFO] [stderr]    Compiling pin-project v0.4.7
[INFO] [stderr]    Compiling futures-util v0.3.1
[INFO] [stderr]    Compiling tokio-util v0.2.0
[INFO] [stderr]    Compiling tokio-tls v0.3.0
[INFO] [stderr]    Compiling serde v1.0.104
[INFO] [stderr]    Compiling h2 v0.2.1
[INFO] [stderr]    Compiling futures-executor v0.3.1
[INFO] [stderr]    Compiling futures v0.3.1
[INFO] [stderr]    Compiling hyper v0.13.1
[INFO] [stderr]    Compiling serde_json v1.0.45
[INFO] [stderr]    Compiling serde_urlencoded v0.6.1
[INFO] [stderr]    Compiling serde_yaml v0.8.11
[INFO] [stderr]    Compiling uuid v0.8.1
[INFO] [stderr]    Compiling bincode v1.2.1
[INFO] [stderr]    Compiling chrono v0.4.10
[INFO] [stderr]    Compiling hyper-tls v0.4.1
[INFO] [stderr]    Compiling cookie_store v0.10.0
[INFO] [stderr]    Compiling reqwest v0.10.1
[INFO] [stderr]    Compiling hars v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/main.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(vec_remove_item)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'std::vec::Vec::<T>::remove_item': Removing the first item equal to a needle is already easily possible with iterators and the current Vec methods. Furthermore, having a method for one particular case of removal (linear search, only the first item, no swap remove) but not for others is inconsistent. This method will be removed soon.
[INFO] [stdout]    --> src/config.rs:111:29
[INFO] [stdout]     |
[INFO] [stdout] 111 |         self.local_projects.remove_item(&project);
[INFO] [stdout]     |                             ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[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 `hars`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "ae047a011c2ccdade8837501959dd3d122741186b52cad41d1edea048ec6e354", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ae047a011c2ccdade8837501959dd3d122741186b52cad41d1edea048ec6e354", kill_on_drop: false }`
[INFO] [stdout] ae047a011c2ccdade8837501959dd3d122741186b52cad41d1edea048ec6e354