[INFO] fetching crate one2html 1.1.1...
[INFO] documenting one2html-1.1.1 against 1.54.0 for beta-1.55-rustdoc-1
[INFO] extracting crate one2html 1.1.1 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate one2html 1.1.1 on toolchain 1.54.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate one2html 1.1.1
[INFO] finished tweaking crates.io crate one2html 1.1.1
[INFO] tweaked toml for crates.io crate one2html 1.1.1 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate crates.io crate one2html 1.1.1 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+1.54.0" "metadata" "--no-deps" "--format-version=1", 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] 6d3694cae8424064c606618acc6846b27bc0d6d2e7e67f9a0877a4fd5bc9768e
[INFO] running `Command { std: "docker" "start" "-a" "6d3694cae8424064c606618acc6846b27bc0d6d2e7e67f9a0877a4fd5bc9768e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6d3694cae8424064c606618acc6846b27bc0d6d2e7e67f9a0877a4fd5bc9768e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6d3694cae8424064c606618acc6846b27bc0d6d2e7e67f9a0877a4fd5bc9768e", kill_on_drop: false }`
[INFO] [stdout] 6d3694cae8424064c606618acc6846b27bc0d6d2e7e67f9a0877a4fd5bc9768e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+1.54.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 90f286ac07e78b412335d190fbf319526f2e833f2abbd7935727904b9724eb02
[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" "90f286ac07e78b412335d190fbf319526f2e833f2abbd7935727904b9724eb02", kill_on_drop: false }`
[INFO] [stderr]    Compiling askama_escape v0.10.1
[INFO] [stderr]    Compiling humansize v1.1.1
[INFO] [stderr]     Checking number_prefix v0.4.0
[INFO] [stderr]     Checking object v0.24.0
[INFO] [stderr]     Checking widestring v0.4.3
[INFO] [stderr]    Compiling phf_shared v0.8.0
[INFO] [stderr]    Compiling backtrace v0.3.59
[INFO] [stderr]     Checking addr2line v0.15.1
[INFO] [stderr]    Compiling libc v0.2.95
[INFO] [stderr]     Checking proc-macro2 v1.0.27
[INFO] [stderr]     Checking tracing-subscriber v0.2.18
[INFO] [stderr]     Checking eyre v0.6.5
[INFO] [stderr]     Checking terminal_size v0.1.17
[INFO] [stderr]     Checking approx v0.3.2
[INFO] [stderr]    Compiling palette_derive v0.5.0
[INFO] [stderr]    Compiling enum-primitive-derive v0.2.1
[INFO] [stderr]     Checking console v0.14.1
[INFO] [stderr]     Checking sanitize-filename v0.3.0
[INFO] [stderr]    Compiling serde v1.0.126
[INFO] [stderr]     Checking tracing v0.1.26
[INFO] [stderr]    Compiling structopt-derive v0.4.14
[INFO] [stderr]     Checking phf v0.8.0
[INFO] [stderr]     Checking quote v1.0.9
[INFO] [stderr]    Compiling getrandom v0.1.16
[INFO] [stderr]     Checking tracing-error v0.1.2
[INFO] [stderr]     Checking indicatif v0.16.2
[INFO] [stderr]     Checking syn v1.0.72
[INFO] [stderr]    Compiling rand_core v0.5.1
[INFO] [stderr]     Checking color-spantrace v0.1.6
[INFO] [stderr]    Compiling rand_pcg v0.2.1
[INFO] [stderr]    Compiling rand_chacha v0.2.2
[INFO] [stderr]    Compiling rand v0.7.3
[INFO] [stderr]     Checking onenote_parser 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/onenote_parser-0.3.0/src/lib.rs:5:36
[INFO] [stdout]   |
[INFO] [stdout] 5 | #![cfg_attr(feature = "backtrace", feature(backtrace))]
[INFO] [stdout]   |                                    ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling phf_generator v0.8.0
[INFO] [stderr]     Checking structopt v0.3.21
[INFO] [stderr]    Compiling phf_codegen v0.8.0
[INFO] [stderr]     Checking happylog v0.2.0
[INFO] [stderr]    Compiling palette v0.5.0
[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 `onenote_parser`
[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" "90f286ac07e78b412335d190fbf319526f2e833f2abbd7935727904b9724eb02", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "90f286ac07e78b412335d190fbf319526f2e833f2abbd7935727904b9724eb02", kill_on_drop: false }`
[INFO] [stdout] 90f286ac07e78b412335d190fbf319526f2e833f2abbd7935727904b9724eb02
