[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] documenting Vengarioth/hydron against 1.54.0 for beta-1.55-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FVengarioth%2Fhydron" "/workspace/builds/worker-0/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0/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-0/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] 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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+1.54.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c8bf85dc60762d30d4300b7ed42c7e0258d618fdd5cdfe9d3d721377fc4d837e
[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" "c8bf85dc60762d30d4300b7ed42c7e0258d618fdd5cdfe9d3d721377fc4d837e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c8bf85dc60762d30d4300b7ed42c7e0258d618fdd5cdfe9d3d721377fc4d837e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c8bf85dc60762d30d4300b7ed42c7e0258d618fdd5cdfe9d3d721377fc4d837e", kill_on_drop: false }`
[INFO] [stdout] c8bf85dc60762d30d4300b7ed42c7e0258d618fdd5cdfe9d3d721377fc4d837e
[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" "RUSTDOCFLAGS=--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" "doc" "--frozen" "--no-deps" "--document-private-items" "--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] ec9d88ff544028c59256dd4f9af0b8d3b2339f997a2680185db471d43c4059b7
[INFO] running `Command { std: "docker" "start" "-a" "ec9d88ff544028c59256dd4f9af0b8d3b2339f997a2680185db471d43c4059b7", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.42
[INFO] [stderr]     Checking hydron-ui v0.1.0 (/opt/rustwide/workdir/hydron-ui)
[INFO] [stderr]  Documenting hydron-ui v0.1.0 (/opt/rustwide/workdir/hydron-ui)
[INFO] [stderr]     Checking memchr v2.0.1
[INFO] [stderr]    Compiling log v0.4.3
[INFO] [stderr]     Checking shared_library v0.1.9
[INFO] [stderr]     Checking proc-macro2 v0.4.6
[INFO] [stderr]     Checking x11-dl v2.18.0
[INFO] [stderr]     Checking wayland-sys v0.20.10
[INFO] [stderr]     Checking cgmath v0.16.1
[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] error: Compilation failed, aborting rustdoc
[INFO] [stdout] 
[INFO] [stdout] 
[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] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[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] [stderr] error: could not document `hydron-ui`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --crate-type lib --crate-name hydron_ui hydron-ui/src/lib.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi --document-private-items -L dependency=/opt/rustwide/target/debug/deps --cap-lints=warn --crate-version 0.1.0` (exit status: 1)
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[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: build failed
[INFO] running `Command { std: "docker" "inspect" "ec9d88ff544028c59256dd4f9af0b8d3b2339f997a2680185db471d43c4059b7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ec9d88ff544028c59256dd4f9af0b8d3b2339f997a2680185db471d43c4059b7", kill_on_drop: false }`
[INFO] [stdout] ec9d88ff544028c59256dd4f9af0b8d3b2339f997a2680185db471d43c4059b7
