[INFO] fetching crate r3 0.2.4...
[INFO] documenting r3-0.2.4 against 1.69.0 for beta-1.70-rustdoc-1
[INFO] extracting crate r3 0.2.4 into /workspace/builds/worker-0-tc1/source
[INFO] validating manifest of crates.io crate r3 0.2.4 on toolchain 1.69.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.69.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate r3 0.2.4
[INFO] finished tweaking crates.io crate r3 0.2.4
[INFO] tweaked toml for crates.io crate r3 0.2.4 written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" __CARGO_TEST_CHANNEL_OVERRIDE_DO_NOT_USE_THIS="nightly" "/workspace/cargo-home/bin/cargo" "+1.69.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.69.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded svgbobdoc v0.3.0
[INFO] [stderr]   Downloaded jss v0.5.1
[INFO] [stderr]   Downloaded sauron-core v0.45.2
[INFO] [stderr]   Downloaded mt-dom v0.15.0
[INFO] [stderr]   Downloaded svgbob v0.6.6
[INFO] [stderr]   Downloaded sauron v0.45.2
[INFO] [stderr]   Downloaded r3_core v0.1.4
[INFO] [stderr]   Downloaded elain v0.3.0
[INFO] [stderr]   Downloaded tokenlock v0.3.8
[INFO] [stderr]   Downloaded macropol v0.1.3
[INFO] [stderr]   Downloaded pom v3.2.0
[INFO] [stderr]   Downloaded embed-doc-image v0.1.4
[INFO] [stderr]   Downloaded parry2d v0.8.0
[INFO] [stderr]   Downloaded seq-macro v0.3.3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:5ff2268d62e97bff2cde7d5815dd6ed5b47097566f13b8d0ca110b04b60e07ed" "/opt/rustwide/cargo-home/bin/cargo" "+1.69.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8f1b7b0feeb0dad9f5af4865056c59279cba02ae8e11a7339b88cbf9b2246d60
[INFO] running `Command { std: "docker" "start" "-a" "8f1b7b0feeb0dad9f5af4865056c59279cba02ae8e11a7339b88cbf9b2246d60", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8f1b7b0feeb0dad9f5af4865056c59279cba02ae8e11a7339b88cbf9b2246d60", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8f1b7b0feeb0dad9f5af4865056c59279cba02ae8e11a7339b88cbf9b2246d60", kill_on_drop: false }`
[INFO] [stdout] 8f1b7b0feeb0dad9f5af4865056c59279cba02ae8e11a7339b88cbf9b2246d60
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:5ff2268d62e97bff2cde7d5815dd6ed5b47097566f13b8d0ca110b04b60e07ed" "/opt/rustwide/cargo-home/bin/cargo" "+1.69.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 64d6d3dc6315b2509b45d4ad270131637dc525636049df8bc664cb8352b2b8f6
[INFO] running `Command { std: "docker" "start" "-a" "64d6d3dc6315b2509b45d4ad270131637dc525636049df8bc664cb8352b2b8f6", kill_on_drop: false }`
[INFO] [stderr]    Compiling semver v1.0.17
[INFO] [stderr]    Compiling base64 v0.13.1
[INFO] [stderr]    Compiling seq-macro v0.3.3
[INFO] [stderr]     Checking stable_deref_trait v1.2.0
[INFO] [stderr]     Checking elain v0.3.0
[INFO] [stderr]    Compiling memoffset v0.6.5
[INFO] [stderr]    Compiling darling_core v0.14.4
[INFO] [stderr]    Compiling svgbobdoc v0.3.0
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/memoffset-0.6.5/src/lib.rs:61:5
[INFO] [stdout]    |
[INFO] [stdout] 61 |     feature(const_ptr_offset_from, const_refs_to_cell)
[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/github.com-1ecc6299db9ec823/memoffset-0.6.5/src/lib.rs:61:13
[INFO] [stdout]    |
[INFO] [stdout] 61 |     feature(const_ptr_offset_from, const_refs_to_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 `memoffset` due to 3 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "64d6d3dc6315b2509b45d4ad270131637dc525636049df8bc664cb8352b2b8f6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "64d6d3dc6315b2509b45d4ad270131637dc525636049df8bc664cb8352b2b8f6", kill_on_drop: false }`
[INFO] [stdout] 64d6d3dc6315b2509b45d4ad270131637dc525636049df8bc664cb8352b2b8f6
