[INFO] fetching crate dochy_diff 0.10.1...
[INFO] documenting dochy_diff-0.10.1 against 1.75.0 for beta-1.76-rustdoc-1
[INFO] extracting crate dochy_diff 0.10.1 into /workspace/builds/worker-4-tc1/source
[INFO] validating manifest of crates.io crate dochy_diff 0.10.1 on toolchain 1.75.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.75.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate dochy_diff 0.10.1
[INFO] finished tweaking crates.io crate dochy_diff 0.10.1
[INFO] tweaked toml for crates.io crate dochy_diff 0.10.1 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.75.0" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.75.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded dochy_compaction v0.10.1
[INFO] [stderr]   Downloaded dochy_json5 v0.10.1
[INFO] [stderr]   Downloaded dochy_core v0.10.1
[INFO] [stderr]   Downloaded dochy_archiver2 v0.10.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.75.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6854f402a2d38b9f58e33c5ba097ea4a27ce0e47a29933f364229590896f055d
[INFO] running `Command { std: "docker" "start" "-a" "6854f402a2d38b9f58e33c5ba097ea4a27ce0e47a29933f364229590896f055d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6854f402a2d38b9f58e33c5ba097ea4a27ce0e47a29933f364229590896f055d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6854f402a2d38b9f58e33c5ba097ea4a27ce0e47a29933f364229590896f055d", kill_on_drop: false }`
[INFO] [stdout] 6854f402a2d38b9f58e33c5ba097ea4a27ce0e47a29933f364229590896f055d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/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" "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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.75.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f6baeb6b848ddd2e5cc996cfa810a8e75519c7b9b53036118abac7292fb4d95d
[INFO] running `Command { std: "docker" "start" "-a" "f6baeb6b848ddd2e5cc996cfa810a8e75519c7b9b53036118abac7292fb4d95d", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.76
[INFO] [stderr]    Compiling snap v1.1.1
[INFO] [stderr]     Checking arrayvec v0.5.2
[INFO] [stderr]    Compiling anyhow v1.0.79
[INFO] [stderr]     Checking bit-vec v0.6.3
[INFO] [stderr]     Checking either v1.9.0
[INFO] [stderr]     Checking ucd-trie v0.1.6
[INFO] [stderr]     Checking with_capacity_safe v0.4.2
[INFO] [stderr]     Checking linked-hash-map v0.5.6
[INFO] [stderr]     Checking metrohash v1.0.6
[INFO] [stderr]     Checking rayon v1.8.0
[INFO] [stderr]     Checking dochy_compaction v0.10.1
[INFO] [stderr]    Compiling quote v1.0.35
[INFO] [stderr]    Compiling syn v2.0.48
[INFO] [stderr]     Checking dochy_archiver2 v0.10.1
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/dochy_archiver2-0.10.1/src/lib.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(test)]
[INFO] [stdout]   |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/dochy_archiver2-0.10.1/src/lib.rs:2:12
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(once_cell)]
[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] [stderr] error: could not compile `dochy_archiver2` (lib) due to 3 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "f6baeb6b848ddd2e5cc996cfa810a8e75519c7b9b53036118abac7292fb4d95d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f6baeb6b848ddd2e5cc996cfa810a8e75519c7b9b53036118abac7292fb4d95d", kill_on_drop: false }`
[INFO] [stdout] f6baeb6b848ddd2e5cc996cfa810a8e75519c7b9b53036118abac7292fb4d95d
