[INFO] cloning repository https://github.com/felix-rhebo/eui48-bench
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/felix-rhebo/eui48-bench" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffelix-rhebo%2Feui48-bench", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffelix-rhebo%2Feui48-bench'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] c2afe31f91dc1d18bbadc8dada987c39ac391324
[INFO] documenting felix-rhebo/eui48-bench 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%2Ffelix-rhebo%2Feui48-bench" "/workspace/builds/worker-25/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-25/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/felix-rhebo/eui48-bench 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/felix-rhebo/eui48-bench
[INFO] finished tweaking git repo https://github.com/felix-rhebo/eui48-bench
[INFO] tweaked toml for git repo https://github.com/felix-rhebo/eui48-bench written to /workspace/builds/worker-25/source/Cargo.toml
[INFO] crate git repo https://github.com/felix-rhebo/eui48-bench 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]     Updating git repository `https://github.com/felix-rhebo/eui48.git`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-25/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-25/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] [stdout] 356edbe477112f2458c1f4d0232c77891ee826affc657227b3f8c45b8ee6fe06
[INFO] running `Command { std: "docker" "start" "-a" "356edbe477112f2458c1f4d0232c77891ee826affc657227b3f8c45b8ee6fe06", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "356edbe477112f2458c1f4d0232c77891ee826affc657227b3f8c45b8ee6fe06", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "356edbe477112f2458c1f4d0232c77891ee826affc657227b3f8c45b8ee6fe06", kill_on_drop: false }`
[INFO] [stdout] 356edbe477112f2458c1f4d0232c77891ee826affc657227b3f8c45b8ee6fe06
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-25/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-25/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] [stdout] 727c371d8e9fa9a83c169b6f97056438fcd2ba6adc24ff12f14909a751e819e3
[INFO] running `Command { std: "docker" "start" "-a" "727c371d8e9fa9a83c169b6f97056438fcd2ba6adc24ff12f14909a751e819e3", kill_on_drop: false }`
[INFO] [stderr]    Compiling memchr v2.3.3
[INFO] [stderr]    Compiling serde v1.0.115
[INFO] [stderr]     Checking regex-syntax v0.6.18
[INFO] [stderr]     Checking rustc-serialize v0.3.24
[INFO] [stderr]     Checking aho-corasick v0.7.13
[INFO] [stderr]     Checking regex v1.3.9
[INFO] [stderr]     Checking eui48 v1.1.0 (https://github.com/felix-rhebo/eui48.git#366a5360)
[INFO] [stderr]     Checking bincode v1.3.1
[INFO] [stderr]  Documenting eui48-bench v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/main.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(test)]
[INFO] [stdout]   |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not document `eui48-bench`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type bin --crate-name eui48_bench src/main.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=e3d3b24d3517266a -L dependency=/opt/rustwide/target/debug/deps --extern bincode=/opt/rustwide/target/debug/deps/libbincode-0b938e2d9f8451c9.rmeta --extern eui48=/opt/rustwide/target/debug/deps/libeui48-50b12e82d657fa98.rmeta --cap-lints=warn --crate-version 0.1.0` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "727c371d8e9fa9a83c169b6f97056438fcd2ba6adc24ff12f14909a751e819e3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "727c371d8e9fa9a83c169b6f97056438fcd2ba6adc24ff12f14909a751e819e3", kill_on_drop: false }`
[INFO] [stdout] 727c371d8e9fa9a83c169b6f97056438fcd2ba6adc24ff12f14909a751e819e3