[INFO] cloning repository https://github.com/Vengarioth/hydron
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Vengarioth/hydron" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FVengarioth%2Fhydron", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FVengarioth%2Fhydron'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] d454d499276d1259751b101ae76661db9cd07c54
[INFO] testing Vengarioth/hydron against 1.54.0 for beta-1.55-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FVengarioth%2Fhydron" "/workspace/builds/worker-47/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-47/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Vengarioth/hydron on toolchain 1.54.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Vengarioth/hydron
[INFO] finished tweaking git repo https://github.com/Vengarioth/hydron
[INFO] tweaked toml for git repo https://github.com/Vengarioth/hydron written to /workspace/builds/worker-47/source/Cargo.toml
[INFO] crate git repo https://github.com/Vengarioth/hydron already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded cgl v0.2.2
[INFO] [stderr]   Downloaded glutin v0.17.0
[INFO] [stderr]   Downloaded gl v0.10.0
[INFO] [stderr]   Downloaded gleam v0.5.1
[INFO] [stderr]   Downloaded smithay-client-toolkit v0.2.5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-47/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-47/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+1.54.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8e6cfafeb4a89eb4477b9dc6c6bbf8b077ba8280debb64a5c10ce63daf85cf64
[INFO] running `Command { std: "docker" "start" "-a" "8e6cfafeb4a89eb4477b9dc6c6bbf8b077ba8280debb64a5c10ce63daf85cf64", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8e6cfafeb4a89eb4477b9dc6c6bbf8b077ba8280debb64a5c10ce63daf85cf64", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8e6cfafeb4a89eb4477b9dc6c6bbf8b077ba8280debb64a5c10ce63daf85cf64", kill_on_drop: false }`
[INFO] [stdout] 8e6cfafeb4a89eb4477b9dc6c6bbf8b077ba8280debb64a5c10ce63daf85cf64
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-47/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-47/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+1.54.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ce075708ec41a19a75fb9ea09bc34e2977120ca51d0fe79f4ca8d85517cba244
[INFO] running `Command { std: "docker" "start" "-a" "ce075708ec41a19a75fb9ea09bc34e2977120ca51d0fe79f4ca8d85517cba244", kill_on_drop: false }`
[INFO] [stderr]    Compiling bitflags v1.0.3
[INFO] [stderr]    Compiling libc v0.2.42
[INFO] [stderr]    Compiling cc v1.0.18
[INFO] [stderr]    Compiling cfg-if v0.1.4
[INFO] [stderr]    Compiling lazy_static v1.0.1
[INFO] [stderr]    Compiling khronos_api v2.2.0
[INFO] [stderr]    Compiling downcast-rs v1.0.3
[INFO] [stderr]    Compiling nix v0.11.0
[INFO] [stderr]    Compiling stable_deref_trait v1.1.0
[INFO] [stderr]    Compiling pkg-config v0.3.11
[INFO] [stderr]    Compiling smallvec v0.6.2
[INFO] [stderr]    Compiling num-traits v0.2.5
[INFO] [stderr]    Compiling remove_dir_all v0.5.1
[INFO] [stderr]    Compiling byteorder v1.2.3
[INFO] [stderr]    Compiling cgmath v0.16.1
[INFO] [stderr]    Compiling hydron-ui v0.1.0 (/opt/rustwide/workdir/hydron-ui)
[INFO] [stderr]    Compiling proc-macro2 v0.4.6
[INFO] [stderr]    Compiling owning_ref v0.3.3
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> hydron-ui/src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(vec_remove_item)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> hydron-ui/src/component.rs:4:27
[INFO] [stdout]   |
[INFO] [stdout] 4 |     pub children: Vec<Box<VirtualElement>>,
[INFO] [stdout]   |                           ^^^^^^^^^^^^^^ help: use `dyn`: `dyn VirtualElement`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout]   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]   = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> hydron-ui/src/component.rs:18:33
[INFO] [stdout]    |
[INFO] [stdout] 18 |     fn render(&mut self) -> Box<VirtualElement>;
[INFO] [stdout]    |                                 ^^^^^^^^^^^^^^ help: use `dyn`: `dyn VirtualElement`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> hydron-ui/src/surface.rs:70:23
[INFO] [stdout]    |
[INFO] [stdout] 70 |     elements: Vec<Box<LayoutElement>>,
[INFO] [stdout]    |                       ^^^^^^^^^^^^^ help: use `dyn`: `dyn LayoutElement`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> hydron-ui/src/surface.rs:170:43
[INFO] [stdout]     |
[INFO] [stdout] 170 |     pub fn insert(&mut self, element: Box<LayoutElement>) -> usize {
[INFO] [stdout]     |                                           ^^^^^^^^^^^^^ help: use `dyn`: `dyn LayoutElement`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `remove_item` found for struct `Vec<usize>` in the current scope
[INFO] [stdout]    --> hydron-ui/src/surface.rs:202:45
[INFO] [stdout]     |
[INFO] [stdout] 202 |                 self.children[parent_index].remove_item(&index);
[INFO] [stdout]     |                                             ^^^^^^^^^^^ method not found in `Vec<usize>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors; 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0554, E0599.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `hydron-ui`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "ce075708ec41a19a75fb9ea09bc34e2977120ca51d0fe79f4ca8d85517cba244", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ce075708ec41a19a75fb9ea09bc34e2977120ca51d0fe79f4ca8d85517cba244", kill_on_drop: false }`
[INFO] [stdout] ce075708ec41a19a75fb9ea09bc34e2977120ca51d0fe79f4ca8d85517cba244
