[INFO] cloning repository https://github.com/TrueDoughnut/ProjectEuler
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/TrueDoughnut/ProjectEuler" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FTrueDoughnut%2FProjectEuler", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FTrueDoughnut%2FProjectEuler'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] c8152c9f02c8a7494a10c82b0c067668de42c4dc
[INFO] documenting TrueDoughnut/ProjectEuler 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%2FTrueDoughnut%2FProjectEuler" "/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/TrueDoughnut/ProjectEuler 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/TrueDoughnut/ProjectEuler
[INFO] finished tweaking git repo https://github.com/TrueDoughnut/ProjectEuler
[INFO] tweaked toml for git repo https://github.com/TrueDoughnut/ProjectEuler written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/TrueDoughnut/ProjectEuler 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] [stderr]     Blocking waiting for file lock on package cache
[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" "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] [stdout] 974632d8bf5708dd7bd1d2af6f9719c53816e58c1c9dd351cadc2c6c095aecee
[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" "974632d8bf5708dd7bd1d2af6f9719c53816e58c1c9dd351cadc2c6c095aecee", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "974632d8bf5708dd7bd1d2af6f9719c53816e58c1c9dd351cadc2c6c095aecee", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "974632d8bf5708dd7bd1d2af6f9719c53816e58c1c9dd351cadc2c6c095aecee", kill_on_drop: false }`
[INFO] [stdout] 974632d8bf5708dd7bd1d2af6f9719c53816e58c1c9dd351cadc2c6c095aecee
[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" "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] 5a8b376507ab2fc622c9280ab1a2b20173895b942aa5ed509c13925facd8dded
[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" "5a8b376507ab2fc622c9280ab1a2b20173895b942aa5ed509c13925facd8dded", kill_on_drop: false }`
[INFO] [stderr]    Compiling num-bigint v0.2.1
[INFO] [stderr]  Documenting ProjectEuler v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0106]: missing lifetime specifier
[INFO] [stdout]   --> src/harder_problems/mod.rs:20:40
[INFO] [stdout]    |
[INFO] [stdout] 20 | fn positive_integers(n: BigInt) -> Vec<&BigInt> {
[INFO] [stdout]    |                                        ^ expected named lifetime parameter
[INFO] [stdout]    |
[INFO] [stdout]    = help: this function's return type contains a borrowed value with an elided lifetime, but the lifetime cannot be derived from the arguments
[INFO] [stdout] help: consider using the `'static` lifetime
[INFO] [stdout]    |
[INFO] [stdout] 20 | fn positive_integers(n: BigInt) -> Vec<&'static BigInt> {
[INFO] [stdout]    |                                        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: Could not document `ProjectEuler`.
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0106`.
[INFO] [stdout] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --crate-type bin --crate-name ProjectEuler 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 num_bigint=/opt/rustwide/target/debug/deps/libnum_bigint-265d3462d427e1f1.rmeta --extern num_traits=/opt/rustwide/target/debug/deps/libnum_traits-cc71a04ce11d3e1f.rmeta --cap-lints=warn` (exit code: 1)
[INFO] running `Command { std: "docker" "inspect" "5a8b376507ab2fc622c9280ab1a2b20173895b942aa5ed509c13925facd8dded", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5a8b376507ab2fc622c9280ab1a2b20173895b942aa5ed509c13925facd8dded", kill_on_drop: false }`
[INFO] [stdout] 5a8b376507ab2fc622c9280ab1a2b20173895b942aa5ed509c13925facd8dded