[INFO] updating cached repository https://github.com/rkanati/lark
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune", kill_on_drop: false }`
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 22a69d8707bb137a447907895b3330dd4b509a1b
[INFO] documenting rkanati/lark against master#394e1b40d264aa6928811919c1124fa248e7d802 for pr-73566
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frkanati%2Flark" "/workspace/builds/worker-5/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/rkanati/lark on toolchain 394e1b40d264aa6928811919c1124fa248e7d802
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+394e1b40d264aa6928811919c1124fa248e7d802" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/rkanati/lark
[INFO] finished tweaking git repo https://github.com/rkanati/lark
[INFO] tweaked toml for git repo https://github.com/rkanati/lark written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] crate git repo https://github.com/rkanati/lark already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+394e1b40d264aa6928811919c1124fa248e7d802" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:819119df93c0f5eca3f29186f14981ef29945a311854d7222af07488600a2584" "/opt/rustwide/cargo-home/bin/cargo" "+394e1b40d264aa6928811919c1124fa248e7d802" "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] fef7248239d5e70e288fef35aea788a18e3b10142597dc58ee02a051baf2bf98
[INFO] running `Command { std: "docker" "start" "-a" "fef7248239d5e70e288fef35aea788a18e3b10142597dc58ee02a051baf2bf98", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "fef7248239d5e70e288fef35aea788a18e3b10142597dc58ee02a051baf2bf98", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fef7248239d5e70e288fef35aea788a18e3b10142597dc58ee02a051baf2bf98", kill_on_drop: false }`
[INFO] [stdout] fef7248239d5e70e288fef35aea788a18e3b10142597dc58ee02a051baf2bf98
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env@sha256:819119df93c0f5eca3f29186f14981ef29945a311854d7222af07488600a2584" "/opt/rustwide/cargo-home/bin/cargo" "+394e1b40d264aa6928811919c1124fa248e7d802" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3618417ba50dcd0c99ec5a4db7c7cbdee415fc431ff966388d439724f9b7f816
[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" "3618417ba50dcd0c99ec5a4db7c7cbdee415fc431ff966388d439724f9b7f816", kill_on_drop: false }`
[INFO] [stderr]  Documenting lark v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0038]: the trait `parse::Parser` cannot be made into an object
[INFO] [stdout]    --> src/parse/combinators/mod.rs:121:5
[INFO] [stdout]     |
[INFO] [stdout] 121 |     alternatives: &'static [&'static dyn Parser<Output = Output>],
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the trait `parse::Parser` cannot be made into an object
[INFO] [stdout]     | 
[INFO] [stdout]    ::: src/parse/mod.rs:11:20
[INFO] [stdout]     |
[INFO] [stdout] 11  | pub trait Parser : Sized {
[INFO] [stdout]     |           ------   ----- ...because it requires `Self: Sized`
[INFO] [stdout]     |           |
[INFO] [stdout]     |           this trait cannot be made into an object...
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0038]: the trait `parse::Parser` cannot be made into an object
[INFO] [stdout]    --> src/parse/combinators/mod.rs:125:30
[INFO] [stdout]     |
[INFO] [stdout] 125 |     pub fn new(alternatives: &'static [&'static dyn Parser<Output = O>]) -> FirstOf<O> {
[INFO] [stdout]     |                              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the trait `parse::Parser` cannot be made into an object
[INFO] [stdout]     | 
[INFO] [stdout]    ::: src/parse/mod.rs:11:20
[INFO] [stdout]     |
[INFO] [stdout] 11  | pub trait Parser : Sized {
[INFO] [stdout]     |           ------   ----- ...because it requires `Self: Sized`
[INFO] [stdout]     |           |
[INFO] [stdout]     |           this trait cannot be made into an object...
[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 E0038`.
[INFO] [stdout] 
[INFO] [stderr] error: Could not document `lark`.
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type bin --crate-name lark src/main.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi --document-private-items -L dependency=/opt/rustwide/target/debug/deps --cap-lints=forbid` (exit code: 1)
[INFO] running `Command { std: "docker" "inspect" "3618417ba50dcd0c99ec5a4db7c7cbdee415fc431ff966388d439724f9b7f816", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3618417ba50dcd0c99ec5a4db7c7cbdee415fc431ff966388d439724f9b7f816", kill_on_drop: false }`
[INFO] [stdout] 3618417ba50dcd0c99ec5a4db7c7cbdee415fc431ff966388d439724f9b7f816