[INFO] fetching crate heph-rt 0.4.1...
[INFO] documenting heph-rt-0.4.1 against 1.69.0 for beta-1.70-rustdoc-1
[INFO] extracting crate heph-rt 0.4.1 into /workspace/builds/worker-4-tc1/source
[INFO] validating manifest of crates.io crate heph-rt 0.4.1 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 heph-rt 0.4.1
[INFO] finished tweaking crates.io crate heph-rt 0.4.1
[INFO] tweaked toml for crates.io crate heph-rt 0.4.1 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] crate crates.io crate heph-rt 0.4.1 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 log-panics v2.1.0
[INFO] [stderr]   Downloaded mio-signals v0.2.0
[INFO] [stderr]   Downloaded heph-inbox v0.2.3
[INFO] [stderr]   Downloaded heph v0.4.0
[INFO] [stderr]   Downloaded std-logger v0.4.4
[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@sha256:5ff2268d62e97bff2cde7d5815dd6ed5b47097566f13b8d0ca110b04b60e07ed" "/opt/rustwide/cargo-home/bin/cargo" "+1.69.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 5e928f8ef80067dbaa61de03f42558146c4066ce7ba791effbd192105d16723f
[INFO] running `Command { std: "docker" "start" "-a" "5e928f8ef80067dbaa61de03f42558146c4066ce7ba791effbd192105d16723f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5e928f8ef80067dbaa61de03f42558146c4066ce7ba791effbd192105d16723f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5e928f8ef80067dbaa61de03f42558146c4066ce7ba791effbd192105d16723f", kill_on_drop: false }`
[INFO] [stdout] 5e928f8ef80067dbaa61de03f42558146c4066ce7ba791effbd192105d16723f
[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@sha256:5ff2268d62e97bff2cde7d5815dd6ed5b47097566f13b8d0ca110b04b60e07ed" "/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] 1745f3ae3b683438101c399d90e7ae6f0d6861debf14217baac1ac8aa13812ab
[INFO] running `Command { std: "docker" "start" "-a" "1745f3ae3b683438101c399d90e7ae6f0d6861debf14217baac1ac8aa13812ab", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.46
[INFO] [stderr]    Compiling unicode-ident v1.0.5
[INFO] [stderr]    Compiling syn v1.0.102
[INFO] [stderr]    Compiling log v0.4.17
[INFO] [stderr]     Checking sval v1.0.0-alpha.5
[INFO] [stderr]    Compiling libc v0.2.135
[INFO] [stderr]    Compiling crossbeam-utils v0.8.12
[INFO] [stderr]     Checking heph-inbox v0.2.3
[INFO] [stderr]    Compiling value-bag v1.0.0-alpha.9
[INFO] [stderr]     Checking crossbeam-channel v0.5.6
[INFO] [stderr]    Compiling quote v1.0.21
[INFO] [stderr]     Checking socket2 v0.4.7
[INFO] [stderr]    Compiling ctor v0.1.23
[INFO] [stderr]     Checking mio v0.8.4
[INFO] [stderr]     Checking heph v0.4.0
[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/heph-0.4.0/src/lib.rs:66:1
[INFO] [stdout]    |
[INFO] [stdout] 66 | #![feature(const_option, doc_auto_cfg, doc_cfg_hide, never_type)]
[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/heph-0.4.0/src/lib.rs:66:12
[INFO] [stdout]    |
[INFO] [stdout] 66 | #![feature(const_option, doc_auto_cfg, doc_cfg_hide, never_type)]
[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 `heph` due to 3 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "1745f3ae3b683438101c399d90e7ae6f0d6861debf14217baac1ac8aa13812ab", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1745f3ae3b683438101c399d90e7ae6f0d6861debf14217baac1ac8aa13812ab", kill_on_drop: false }`
[INFO] [stdout] 1745f3ae3b683438101c399d90e7ae6f0d6861debf14217baac1ac8aa13812ab
