[INFO] fetching crate redox_installer 0.2.7...
[INFO] documenting redox_installer-0.2.7 against 1.46.0 for beta-1.47-rustdoc-1
[INFO] extracting crate redox_installer 0.2.7 into /workspace/builds/worker-0/source
[INFO] validating manifest of crates.io crate redox_installer 0.2.7 on toolchain 1.46.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.46.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate redox_installer 0.2.7
[INFO] finished tweaking crates.io crate redox_installer 0.2.7
[INFO] tweaked toml for crates.io crate redox_installer 0.2.7 written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate crates.io crate redox_installer 0.2.7 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.46.0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] error: the lock file /workspace/builds/worker-0/source/Cargo.lock needs to be updated but --locked was passed to prevent this
[INFO] [stderr] If you want to try to generate the lock file without accessing the network, use the --offline flag.
[INFO] the lockfile is outdated, regenerating it
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.46.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.46.0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+1.46.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d39ebb223d95fb51fce3fdc897ee0c889fb6ceb768acf266fa461b5556a0ddf2
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "d39ebb223d95fb51fce3fdc897ee0c889fb6ceb768acf266fa461b5556a0ddf2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d39ebb223d95fb51fce3fdc897ee0c889fb6ceb768acf266fa461b5556a0ddf2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d39ebb223d95fb51fce3fdc897ee0c889fb6ceb768acf266fa461b5556a0ddf2", kill_on_drop: false }`
[INFO] [stdout] d39ebb223d95fb51fce3fdc897ee0c889fb6ceb768acf266fa461b5556a0ddf2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+1.46.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] d42b2c8e45951e95b6e707b06837f82d6641e1d3a04ca102813fe3b0e8f8e79b
[INFO] running `Command { std: "docker" "start" "-a" "d42b2c8e45951e95b6e707b06837f82d6641e1d3a04ca102813fe3b0e8f8e79b", kill_on_drop: false }`
[INFO] [stderr]    Compiling redox_pkgutils v0.1.6
[INFO] [stderr]     Checking index-fixed v0.3.0
[INFO] [stderr]     Checking bytecount v0.6.0
[INFO] [stderr]     Checking version-compare v0.0.10
[INFO] [stderr]     Checking ordermap v0.2.13
[INFO] [stderr]     Checking redox_syscall v0.1.57
[INFO] [stderr]     Checking bidir-map v0.6.0
[INFO] [stderr]     Checking arg_parser v0.1.0
[INFO] [stderr]    Compiling ring v0.13.5
[INFO] [stderr]    Compiling blake3 v0.2.3
[INFO] [stderr]     Checking toml v0.5.6
[INFO] [stderr]     Checking sha3 v0.8.2
[INFO] [stderr]     Checking rust-argon2 v0.8.2
[INFO] [stderr]     Checking uuid v0.5.1
[INFO] [stderr]     Checking pbr v1.0.3
[INFO] [stderr]     Checking sodalite 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/redox_syscall-0.1.57/src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(llvm_asm)]
[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/redox_syscall-0.1.57/src/lib.rs:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(const_fn)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking redox_liner v0.5.1
[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 `redox_syscall`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "d42b2c8e45951e95b6e707b06837f82d6641e1d3a04ca102813fe3b0e8f8e79b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d42b2c8e45951e95b6e707b06837f82d6641e1d3a04ca102813fe3b0e8f8e79b", kill_on_drop: false }`
[INFO] [stdout] d42b2c8e45951e95b6e707b06837f82d6641e1d3a04ca102813fe3b0e8f8e79b