[INFO] fetching crate embedded-alloc 0.5.0...
[INFO] documenting embedded-alloc-0.5.0 against 1.69.0 for beta-1.70-rustdoc-1
[INFO] extracting crate embedded-alloc 0.5.0 into /workspace/builds/worker-5-tc1/source
[INFO] validating manifest of crates.io crate embedded-alloc 0.5.0 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 embedded-alloc 0.5.0
[INFO] finished tweaking crates.io crate embedded-alloc 0.5.0
[INFO] tweaked toml for crates.io crate embedded-alloc 0.5.0 written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] crate crates.io crate embedded-alloc 0.5.0 already has a lockfile, it will not be regenerated
[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 cortex-m-rt v0.7.2
[INFO] [stderr]   Downloaded linked_list_allocator v0.10.4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] 60c50b169b1a727d9096fba399e922587494a90b069070a874978dc530e2d0f9
[INFO] running `Command { std: "docker" "start" "-a" "60c50b169b1a727d9096fba399e922587494a90b069070a874978dc530e2d0f9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "60c50b169b1a727d9096fba399e922587494a90b069070a874978dc530e2d0f9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "60c50b169b1a727d9096fba399e922587494a90b069070a874978dc530e2d0f9", kill_on_drop: false }`
[INFO] [stdout] 60c50b169b1a727d9096fba399e922587494a90b069070a874978dc530e2d0f9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] 2d43f45beb9d24542560083420597c87d76619872fac5d9a36930e2d6272c0fc
[INFO] running `Command { std: "docker" "start" "-a" "2d43f45beb9d24542560083420597c87d76619872fac5d9a36930e2d6272c0fc", kill_on_drop: false }`
[INFO] [stderr]     Checking linked_list_allocator v0.10.4
[INFO] [stderr]     Checking critical-section v1.1.1
[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/linked_list_allocator-0.10.4/src/lib.rs:1:41
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![cfg_attr(feature = "const_mut_refs", feature(const_mut_refs))]
[INFO] [stdout]   |                                         ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `linked_list_allocator` due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "2d43f45beb9d24542560083420597c87d76619872fac5d9a36930e2d6272c0fc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2d43f45beb9d24542560083420597c87d76619872fac5d9a36930e2d6272c0fc", kill_on_drop: false }`
[INFO] [stdout] 2d43f45beb9d24542560083420597c87d76619872fac5d9a36930e2d6272c0fc
