[INFO] cloning repository https://github.com/SamuelMarks/rust-playground
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/SamuelMarks/rust-playground" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSamuelMarks%2Frust-playground", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSamuelMarks%2Frust-playground'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 436a6d87e5ee54c7b48bcfd6bb0a9f75c2ba9273
[INFO] documenting SamuelMarks/rust-playground against beta-2021-08-01 for beta-1.55-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSamuelMarks%2Frust-playground" "/workspace/builds/worker-6/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/SamuelMarks/rust-playground on toolchain beta-2021-08-01
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-08-01" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/SamuelMarks/rust-playground
[INFO] finished tweaking git repo https://github.com/SamuelMarks/rust-playground
[INFO] tweaked toml for git repo https://github.com/SamuelMarks/rust-playground written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/SamuelMarks/rust-playground already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-08-01" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded serde_derive v1.0.81
[INFO] [stderr]   Downloaded serde v1.0.81
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "+beta-2021-08-01" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2634af86c97abd36d6adba3c789a9252bf153aaaab8ef6bc9b09036669f1b162
[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" "2634af86c97abd36d6adba3c789a9252bf153aaaab8ef6bc9b09036669f1b162", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2634af86c97abd36d6adba3c789a9252bf153aaaab8ef6bc9b09036669f1b162", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2634af86c97abd36d6adba3c789a9252bf153aaaab8ef6bc9b09036669f1b162", kill_on_drop: false }`
[INFO] [stdout] 2634af86c97abd36d6adba3c789a9252bf153aaaab8ef6bc9b09036669f1b162
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "+beta-2021-08-01" "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] be597c31a7c22986de77649faa08861aeae9ff5711ce5dd1cf0b7d6137eefa9f
[INFO] running `Command { std: "docker" "start" "-a" "be597c31a7c22986de77649faa08861aeae9ff5711ce5dd1cf0b7d6137eefa9f", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling proc-macro2 v0.4.24
[INFO] [stderr]    Compiling serde v1.0.81
[INFO] [stderr]    Compiling quote v0.6.10
[INFO] [stderr]    Compiling syn v0.15.22
[INFO] [stderr]     Checking toml v0.4.10
[INFO] [stderr]    Compiling serde_derive v1.0.81
[INFO] [stderr]  Documenting rust-playground v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0433]: failed to resolve: maybe a missing crate `core`?
[INFO] [stdout]   --> src/main.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 12 | use core::num::ParseIntError;
[INFO] [stdout]    |     ^^^^ maybe a missing crate `core`?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0412]: cannot find type `ParseIntError` in this scope
[INFO] [stdout]   --> src/main.rs:66:16
[INFO] [stdout]    |
[INFO] [stdout] 66 |     type Err = ParseIntError;
[INFO] [stdout]    |                ^^^^^^^^^^^^^ not found in this scope
[INFO] [stdout]    |
[INFO] [stdout] help: consider importing this struct
[INFO] [stdout]    |
[INFO] [stdout] 9  | use std::num::ParseIntError;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: Compilation failed, aborting rustdoc
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 3 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0412, E0433.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0412`.
[INFO] [stdout] 
[INFO] [stderr] error: could not document `rust-playground`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --crate-type bin --crate-name rust_playground 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 --extern serde=/opt/rustwide/target/debug/deps/libserde-28e2017607d878d1.rmeta --extern serde_derive=/opt/rustwide/target/debug/deps/libserde_derive-d04b65237bbb838a.so --extern toml=/opt/rustwide/target/debug/deps/libtoml-60cd651d5954f9dc.rmeta --extern void=/opt/rustwide/target/debug/deps/libvoid-94ef9d016045abf1.rmeta --cap-lints=warn --crate-version 0.1.0` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "be597c31a7c22986de77649faa08861aeae9ff5711ce5dd1cf0b7d6137eefa9f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "be597c31a7c22986de77649faa08861aeae9ff5711ce5dd1cf0b7d6137eefa9f", kill_on_drop: false }`
[INFO] [stdout] be597c31a7c22986de77649faa08861aeae9ff5711ce5dd1cf0b7d6137eefa9f
