[INFO] cloning repository https://github.com/gloriousfutureio/changes
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/gloriousfutureio/changes" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgloriousfutureio%2Fchanges", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgloriousfutureio%2Fchanges'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] c719c85d958e62bfec768d1db78cd763454a468a
[INFO] documenting gloriousfutureio/changes against 1.46.0 for beta-1.47-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgloriousfutureio%2Fchanges" "/workspace/builds/worker-9/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-9/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/gloriousfutureio/changes 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 git repo https://github.com/gloriousfutureio/changes
[INFO] finished tweaking git repo https://github.com/gloriousfutureio/changes
[INFO] tweaked toml for git repo https://github.com/gloriousfutureio/changes written to /workspace/builds/worker-9/source/Cargo.toml
[INFO] crate git repo https://github.com/gloriousfutureio/changes 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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 13e5ef9a971c76ca6e10bccf7bd1ed4be02873ebda850f906f4db1d39a8fbccf
[INFO] running `Command { std: "docker" "start" "-a" "13e5ef9a971c76ca6e10bccf7bd1ed4be02873ebda850f906f4db1d39a8fbccf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "13e5ef9a971c76ca6e10bccf7bd1ed4be02873ebda850f906f4db1d39a8fbccf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "13e5ef9a971c76ca6e10bccf7bd1ed4be02873ebda850f906f4db1d39a8fbccf", kill_on_drop: false }`
[INFO] [stdout] 13e5ef9a971c76ca6e10bccf7bd1ed4be02873ebda850f906f4db1d39a8fbccf
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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] [stdout] 52f44254345f8146846f2dcc463bad35da5588e65e42708e1a463b00a4a6ec31
[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" "52f44254345f8146846f2dcc463bad35da5588e65e42708e1a463b00a4a6ec31", kill_on_drop: false }`
[INFO] [stderr]     Checking cfg-if v0.1.3
[INFO] [stderr]     Checking byteorder v1.2.2
[INFO] [stderr]    Compiling libc v0.2.40
[INFO] [stderr]    Compiling cc v1.0.15
[INFO] [stderr]    Compiling nodrop v0.1.12
[INFO] [stderr]    Compiling lazy_static v1.0.0
[INFO] [stderr]    Compiling pkg-config v0.3.11
[INFO] [stderr]    Compiling rayon-core v1.4.0
[INFO] [stderr]     Checking serde v1.0.45
[INFO] [stderr]     Checking num-traits v0.2.2
[INFO] [stderr]     Checking unicode-normalization v0.1.6
[INFO] [stderr]    Compiling safemem v0.2.0
[INFO] [stderr]     Checking untrusted v0.5.1
[INFO] [stderr]     Checking either v1.5.0
[INFO] [stderr]    Compiling httparse v1.2.4
[INFO] [stderr]    Compiling openssl v0.10.7
[INFO] [stderr]     Checking itoa v0.4.1
[INFO] [stderr]     Checking adler32 v1.0.2
[INFO] [stderr]    Compiling maud_htmlescape v0.17.0 (https://github.com/lfairy/maud.git#7c63fc13)
[INFO] [stderr]    Compiling pear v0.0.16
[INFO] [stderr]     Checking ordermap v0.2.13
[INFO] [stderr]     Checking smallvec v0.6.1
[INFO] [stderr]     Checking yansi v0.4.0
[INFO] [stderr]    Compiling literalext v0.1.1
[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/literalext-0.1.1/src/lib.rs:19:37
[INFO] [stdout]    |
[INFO] [stdout] 19 | #![cfg_attr(feature = "proc-macro", feature(proc_macro))]
[INFO] [stdout]    |                                     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking hex v0.3.2
[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 `literalext`.
[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" "52f44254345f8146846f2dcc463bad35da5588e65e42708e1a463b00a4a6ec31", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "52f44254345f8146846f2dcc463bad35da5588e65e42708e1a463b00a4a6ec31", kill_on_drop: false }`
[INFO] [stdout] 52f44254345f8146846f2dcc463bad35da5588e65e42708e1a463b00a4a6ec31