[INFO] cloning repository https://github.com/samphippen/descriptor
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/samphippen/descriptor" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsamphippen%2Fdescriptor", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsamphippen%2Fdescriptor'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 01336a02a497156bb9d64d1a822aa44b97436139
[INFO] documenting samphippen/descriptor against beta-2020-08-29 for beta-1.47-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsamphippen%2Fdescriptor" "/workspace/builds/worker-8/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-8/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/samphippen/descriptor on toolchain beta-2020-08-29
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-08-29" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/samphippen/descriptor
[INFO] removed path dependency expector from git repo https://github.com/samphippen/descriptor
[INFO] finished tweaking git repo https://github.com/samphippen/descriptor
[INFO] tweaked toml for git repo https://github.com/samphippen/descriptor written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] crate git repo https://github.com/samphippen/descriptor already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-08-29" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: dependency (expector) specified without providing a local path, Git repository, or version to use. This will be considered an error in future versions
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr] error: the lock file /workspace/builds/worker-8/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[INFO] the lockfile is outdated, regenerating it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" "+beta-2020-08-29" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-08-29" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: dependency (expector) specified without providing a local path, Git repository, or version to use. This will be considered an error in future versions
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded expector v0.1.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "+beta-2020-08-29" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b1eb9fcf5f3ecff38fe634d6760cad298d7e64ee04d83f0036743fa0e9fcc659
[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" "b1eb9fcf5f3ecff38fe634d6760cad298d7e64ee04d83f0036743fa0e9fcc659", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b1eb9fcf5f3ecff38fe634d6760cad298d7e64ee04d83f0036743fa0e9fcc659", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b1eb9fcf5f3ecff38fe634d6760cad298d7e64ee04d83f0036743fa0e9fcc659", kill_on_drop: false }`
[INFO] [stdout] b1eb9fcf5f3ecff38fe634d6760cad298d7e64ee04d83f0036743fa0e9fcc659
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "+beta-2020-08-29" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0d2248204218a570721849b32f60f25a3aa809d19dbc178c52ee5f578fd2af12
[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" "0d2248204218a570721849b32f60f25a3aa809d19dbc178c52ee5f578fd2af12", kill_on_drop: false }`
[INFO] [stderr] warning: dependency (expector) specified without providing a local path, Git repository, or version to use. This will be considered an error in future versions
[INFO] [stderr]  Documenting descriptor v0.1.0-pre (/opt/rustwide/workdir)
[INFO] [stdout] error[E0432]: unresolved imports `std::panic::recover`, `std::panic::RecoverSafe`
[INFO] [stdout]  --> src/example_group/example_group.rs:4:18
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::panic::{recover, RecoverSafe, UnwindSafe};
[INFO] [stdout]   |                  ^^^^^^^  ^^^^^^^^^^^ no `RecoverSafe` in `panic`
[INFO] [stdout]   |                  |
[INFO] [stdout]   |                  no `recover` in `panic`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0432]: unresolved import `std::boxed::FnBox`
[INFO] [stdout]  --> src/example.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::boxed::FnBox;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^ no `FnBox` in `boxed`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(recover, std_panic, panic_handler, fnbox)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: Compilation failed, aborting rustdoc
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 4 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0432, E0554.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0432`.
[INFO] [stdout] 
[INFO] [stderr] error: Could not document `descriptor`.
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --crate-type lib --crate-name descriptor src/lib.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi --document-private-items -L dependency=/opt/rustwide/target/debug/deps --extern lazy_static=/opt/rustwide/target/debug/deps/liblazy_static-554c840b0ec7dfdd.rmeta --cap-lints=warn --crate-version 0.1.0-pre` (exit code: 1)
[INFO] running `Command { std: "docker" "inspect" "0d2248204218a570721849b32f60f25a3aa809d19dbc178c52ee5f578fd2af12", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0d2248204218a570721849b32f60f25a3aa809d19dbc178c52ee5f578fd2af12", kill_on_drop: false }`
[INFO] [stdout] 0d2248204218a570721849b32f60f25a3aa809d19dbc178c52ee5f578fd2af12