[INFO] cloning repository https://github.com/chnn/tsd
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/chnn/tsd" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fchnn%2Ftsd", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fchnn%2Ftsd'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 0ef8aed69c93da5242b811527b0196d1bb384fc1
[INFO] documenting chnn/tsd against 1.61.0 for beta-1.62-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fchnn%2Ftsd" "/workspace/builds/worker-12/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-12/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/chnn/tsd on toolchain 1.61.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.61.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/chnn/tsd
[INFO] finished tweaking git repo https://github.com/chnn/tsd
[INFO] tweaked toml for git repo https://github.com/chnn/tsd written to /workspace/builds/worker-12/source/Cargo.toml
[INFO] crate git repo https://github.com/chnn/tsd already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.61.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded pest_meta v2.0.3
[INFO] [stderr]   Downloaded pest_generator v2.0.0
[INFO] [stderr]   Downloaded pest_derive v2.0.1
[INFO] [stderr]   Downloaded pest v2.0.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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:d190cb871061d98bc6d0581d85cb2ecb09a0f8a142ba5463de30be9999fc3251" "/opt/rustwide/cargo-home/bin/cargo" "+1.61.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b1f7e9bb481491bd173373a11ccb2627b1d103da6f0dd3fb5b8a67511c617bd1
[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" "b1f7e9bb481491bd173373a11ccb2627b1d103da6f0dd3fb5b8a67511c617bd1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b1f7e9bb481491bd173373a11ccb2627b1d103da6f0dd3fb5b8a67511c617bd1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b1f7e9bb481491bd173373a11ccb2627b1d103da6f0dd3fb5b8a67511c617bd1", kill_on_drop: false }`
[INFO] [stdout] b1f7e9bb481491bd173373a11ccb2627b1d103da6f0dd3fb5b8a67511c617bd1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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:d190cb871061d98bc6d0581d85cb2ecb09a0f8a142ba5463de30be9999fc3251" "/opt/rustwide/cargo-home/bin/cargo" "+1.61.0" "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] cee35c68705de99b4af65806db3e7b0fcc4d3c290eeb956d6a424ab1f54fd053
[INFO] running `Command { std: "docker" "start" "-a" "cee35c68705de99b4af65806db3e7b0fcc4d3c290eeb956d6a424ab1f54fd053", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling proc-macro2 v0.4.20
[INFO] [stderr]    Compiling ucd-trie v0.1.1
[INFO] [stderr]    Compiling maplit v1.0.1
[INFO] [stderr]     Checking libc v0.2.43
[INFO] [stderr]     Checking pest v2.0.1
[INFO] [stderr]     Checking time v0.1.40
[INFO] [stderr]    Compiling quote v0.6.8
[INFO] [stderr]     Checking chrono v0.4.6
[INFO] [stderr]    Compiling syn v0.14.9
[INFO] [stderr]    Compiling pest_meta v2.0.3
[INFO] [stderr]    Compiling pest_generator v2.0.0
[INFO] [stderr]    Compiling pest_derive v2.0.1
[INFO] [stderr]  Documenting tsd v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(nll)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: Compilation failed, aborting rustdoc
[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 document `tsd`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --crate-type lib --crate-name tsd src/lib.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=3fdb44956cfac23f -L dependency=/opt/rustwide/target/debug/deps --extern chrono=/opt/rustwide/target/debug/deps/libchrono-b28141e2246b3c77.rmeta --extern pest=/opt/rustwide/target/debug/deps/libpest-72fb4dbd13e4a9a1.rmeta --extern pest_derive=/opt/rustwide/target/debug/deps/libpest_derive-3dcb271da51135ec.so --cap-lints=warn --crate-version 0.1.0` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "cee35c68705de99b4af65806db3e7b0fcc4d3c290eeb956d6a424ab1f54fd053", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cee35c68705de99b4af65806db3e7b0fcc4d3c290eeb956d6a424ab1f54fd053", kill_on_drop: false }`
[INFO] [stdout] cee35c68705de99b4af65806db3e7b0fcc4d3c290eeb956d6a424ab1f54fd053