[INFO] cloning repository https://github.com/Torrencem/addcomb-comp [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Torrencem/addcomb-comp" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FTorrencem%2Faddcomb-comp", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FTorrencem%2Faddcomb-comp'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 4680e352214b8c7af857e361a801464e1c3f5ee3 [INFO] documenting Torrencem/addcomb-comp against 1.61.0 for beta-1.62-rustdoc-1 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FTorrencem%2Faddcomb-comp" "/workspace/builds/worker-23/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-23/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/Torrencem/addcomb-comp on toolchain 1.61.0 [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.61.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/Torrencem/addcomb-comp [INFO] finished tweaking git repo https://github.com/Torrencem/addcomb-comp [INFO] tweaked toml for git repo https://github.com/Torrencem/addcomb-comp written to /workspace/builds/worker-23/source/Cargo.toml [INFO] crate git repo https://github.com/Torrencem/addcomb-comp already has a lockfile, it will not be regenerated [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.61.0" "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 serde_derive v1.0.102 [INFO] [stderr] Downloaded syn v1.0.8 [INFO] [stderr] Downloaded rand_xoshiro v0.3.1 [INFO] [stderr] Downloaded criterion-plot v0.4.0 [INFO] [stderr] Downloaded serde v1.0.102 [INFO] [stderr] Downloaded rand_os v0.2.2 [INFO] [stderr] Downloaded criterion v0.3.0 [INFO] [stderr] Downloaded paste-impl v0.1.6 [INFO] [stderr] Downloaded once_cell v1.3.0 [INFO] [stderr] Downloaded paste v0.1.6 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-23/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-23/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:d190cb871061d98bc6d0581d85cb2ecb09a0f8a142ba5463de30be9999fc3251" "/opt/rustwide/cargo-home/bin/cargo" "+1.61.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] d7c9a0bbe10585eeb84c7ff751808c9447420b2ef8ae74a6035f6579e4eec9bc [INFO] running `Command { std: "docker" "start" "-a" "d7c9a0bbe10585eeb84c7ff751808c9447420b2ef8ae74a6035f6579e4eec9bc", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "d7c9a0bbe10585eeb84c7ff751808c9447420b2ef8ae74a6035f6579e4eec9bc", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "d7c9a0bbe10585eeb84c7ff751808c9447420b2ef8ae74a6035f6579e4eec9bc", kill_on_drop: false }` [INFO] [stdout] d7c9a0bbe10585eeb84c7ff751808c9447420b2ef8ae74a6035f6579e4eec9bc [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-23/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-23/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:d190cb871061d98bc6d0581d85cb2ecb09a0f8a142ba5463de30be9999fc3251" "/opt/rustwide/cargo-home/bin/cargo" "+1.61.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 4a78d382c8bbb86a3a536e6c7e02f103f1a00a34b0c8a2b8015780a1dcfc9dcd [INFO] running `Command { std: "docker" "start" "-a" "4a78d382c8bbb86a3a536e6c7e02f103f1a00a34b0c8a2b8015780a1dcfc9dcd", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Compiling proc-macro2 v1.0.6 [INFO] [stderr] Compiling unicode-xid v0.2.0 [INFO] [stderr] Compiling syn v1.0.8 [INFO] [stderr] Checking either v1.5.2 [INFO] [stderr] Checking once_cell v1.3.0 [INFO] [stderr] Checking specialize v0.0.3 [INFO] [stderr] Checking array_tool v1.0.3 [INFO] [stderr] Checking itertools v0.8.0 [INFO] [stderr] Compiling quote v1.0.2 [INFO] [stderr] Compiling proc-macro-hack v0.5.11 [INFO] [stderr] Compiling paste-impl v0.1.6 [INFO] [stderr] Checking paste v0.1.6 [INFO] [stderr] Documenting addcomb_comp v0.1.5 (/opt/rustwide/workdir) [INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel [INFO] [stdout] --> src/lib.rs:1:1 [INFO] [stdout] | [INFO] [stdout] 1 | #![feature(specialization)] [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the feature `specialization` is incomplete and may not be safe to use and/or cause compiler crashes [INFO] [stdout] --> src/lib.rs:1:12 [INFO] [stdout] | [INFO] [stdout] 1 | #![feature(specialization)] [INFO] [stdout] | ^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(incomplete_features)]` on by default [INFO] [stdout] = note: see issue #31844 for more information [INFO] [stdout] = help: consider using `min_specialization` instead, which is more stable and complete [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: Compilation failed, aborting rustdoc [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: aborting due to 2 previous errors; 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 document `addcomb_comp` [INFO] [stderr] [INFO] [stderr] Caused by: [INFO] [stderr] process didn't exit successfully: `rustdoc --edition=2018 --crate-type rlib --crate-type dylib --crate-name addcomb_comp src/lib.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=8f5f9f123417623c -L dependency=/opt/rustwide/target/debug/deps --extern array_tool=/opt/rustwide/target/debug/deps/libarray_tool-db7ff6bf4b0acda3.rmeta --extern itertools=/opt/rustwide/target/debug/deps/libitertools-34a60239a770f121.rmeta --extern once_cell=/opt/rustwide/target/debug/deps/libonce_cell-1a65dafaf78fd077.rmeta --extern paste=/opt/rustwide/target/debug/deps/libpaste-b39de717b860bfba.rmeta --extern specialize=/opt/rustwide/target/debug/deps/libspecialize-50ccb6dadce018c0.rmeta --cap-lints=warn --crate-version 0.1.5` (exit status: 1) [INFO] running `Command { std: "docker" "inspect" "4a78d382c8bbb86a3a536e6c7e02f103f1a00a34b0c8a2b8015780a1dcfc9dcd", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "4a78d382c8bbb86a3a536e6c7e02f103f1a00a34b0c8a2b8015780a1dcfc9dcd", kill_on_drop: false }` [INFO] [stdout] 4a78d382c8bbb86a3a536e6c7e02f103f1a00a34b0c8a2b8015780a1dcfc9dcd