[INFO] cloning repository https://github.com/jeffgran/krs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/jeffgran/krs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjeffgran%2Fkrs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjeffgran%2Fkrs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 235d2893c6a7343795c29da9934a38a2433c985f
[INFO] documenting jeffgran/krs 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%2Fjeffgran%2Fkrs" "/workspace/builds/worker-3/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/jeffgran/krs 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/jeffgran/krs
[INFO] finished tweaking git repo https://github.com/jeffgran/krs
[INFO] tweaked toml for git repo https://github.com/jeffgran/krs written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] crate git repo https://github.com/jeffgran/krs 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 structopt-derive v0.2.12
[INFO] [stderr]   Downloaded quicli v0.3.1
[INFO] [stderr]   Downloaded syn v0.15.13
[INFO] [stderr]   Downloaded structopt v0.2.12
[INFO] [stderr]   Downloaded clap-verbosity-flag v0.1.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] dbaefd28889b5e4759d628a7d261744ce930999734af1f673db4f1af14389224
[INFO] running `Command { std: "docker" "start" "-a" "dbaefd28889b5e4759d628a7d261744ce930999734af1f673db4f1af14389224", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "dbaefd28889b5e4759d628a7d261744ce930999734af1f673db4f1af14389224", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dbaefd28889b5e4759d628a7d261744ce930999734af1f673db4f1af14389224", kill_on_drop: false }`
[INFO] [stdout] dbaefd28889b5e4759d628a7d261744ce930999734af1f673db4f1af14389224
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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] 03ab22372ea499d4c6c2ebf64d11a0594a8241e09f8dc681d671ddc2c0ce19a1
[INFO] running `Command { std: "docker" "start" "-a" "03ab22372ea499d4c6c2ebf64d11a0594a8241e09f8dc681d671ddc2c0ce19a1", kill_on_drop: false }`
[INFO] [stderr]     Checking libc v0.2.43
[INFO] [stderr]    Compiling proc-macro2 v0.4.20
[INFO] [stderr]    Compiling regex v1.0.5
[INFO] [stderr]     Checking strsim v0.7.0
[INFO] [stderr]     Checking utf8-ranges v1.0.1
[INFO] [stderr]     Checking rand_core v0.3.0
[INFO] [stderr]    Compiling memchr v2.1.0
[INFO] [stderr]     Checking regex-syntax v0.6.2
[INFO] [stderr]     Checking textwrap v0.10.0
[INFO] [stderr]     Checking log v0.4.5
[INFO] [stderr]     Checking humantime v1.1.1
[INFO] [stderr]     Checking thread_local v0.3.6
[INFO] [stderr]     Checking crossbeam-epoch v0.3.1
[INFO] [stderr]     Checking rand_core v0.2.2
[INFO] [stderr]     Checking crossbeam-deque v0.2.0
[INFO] [stderr]     Checking atty v0.2.11
[INFO] [stderr]     Checking backtrace-sys v0.1.24
[INFO] [stderr]     Checking num_cpus v1.8.0
[INFO] [stderr]     Checking rand v0.5.5
[INFO] [stderr]     Checking backtrace v0.3.9
[INFO] [stderr]     Checking clap v2.32.0
[INFO] [stderr]     Checking rayon-core v1.4.1
[INFO] [stderr]    Compiling quote v0.6.8
[INFO] [stderr]     Checking aho-corasick v0.6.8
[INFO] [stderr]    Compiling syn v0.15.13
[INFO] [stderr]     Checking rayon v1.0.2
[INFO] [stderr]     Checking env_logger v0.5.13
[INFO] [stderr]    Compiling synstructure v0.10.0
[INFO] [stderr]    Compiling structopt-derive v0.2.12
[INFO] [stderr]    Compiling serde_derive v1.0.80
[INFO] [stderr]    Compiling failure_derive v0.1.3
[INFO] [stderr]     Checking structopt v0.2.12
[INFO] [stderr]     Checking failure v0.1.3
[INFO] [stderr]     Checking clap-verbosity-flag v0.1.0
[INFO] [stderr]     Checking quicli v0.3.1
[INFO] [stderr]  Documenting krs v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0659]: `structopt` is ambiguous
[INFO] [stdout]  --> src/main.rs:5:10
[INFO] [stdout]   |
[INFO] [stdout] 5 | #[derive(StructOpt)]
[INFO] [stdout]   |          ^^^^^^^^^ ambiguous name
[INFO] [stdout]   |
[INFO] [stdout]   = note: ambiguous because of a conflict between a name from a glob import and an outer scope during import or macro resolution
[INFO] [stdout]   = note: `structopt` could refer to a crate passed with `--extern`
[INFO] [stdout] note: `structopt` could also refer to the module imported here
[INFO] [stdout]  --> src/main.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use quicli::prelude::*;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   = help: consider adding an explicit import of `structopt` to disambiguate
[INFO] [stdout]   = help: or use `crate::structopt` to refer to this module unambiguously
[INFO] [stdout]   = note: this error originates in the derive macro `StructOpt` (in Nightly builds, run with -Z macro-backtrace for more info)
[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 E0659`.
[INFO] [stdout] 
[INFO] [stderr] error: could not document `krs`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type bin --crate-name krs src/main.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=e35f4f641ecfc0fe -L dependency=/opt/rustwide/target/debug/deps --extern quicli=/opt/rustwide/target/debug/deps/libquicli-8d6facdc0d550938.rmeta --extern rand=/opt/rustwide/target/debug/deps/librand-5f966387b3ff9e74.rmeta --extern structopt=/opt/rustwide/target/debug/deps/libstructopt-8f451fdd9dc8cc9d.rmeta --cap-lints=warn --crate-version 0.1.0` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "03ab22372ea499d4c6c2ebf64d11a0594a8241e09f8dc681d671ddc2c0ce19a1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "03ab22372ea499d4c6c2ebf64d11a0594a8241e09f8dc681d671ddc2c0ce19a1", kill_on_drop: false }`
[INFO] [stdout] 03ab22372ea499d4c6c2ebf64d11a0594a8241e09f8dc681d671ddc2c0ce19a1