[INFO] fetching crate nil-namegen 0.7.25...
[INFO] documenting nil-namegen-0.7.25 against 1.99.0-beta.8 for beta-rustdoc-1.100
[INFO] extracting crate nil-namegen 0.7.25 into /workspace/builds/worker-5-tc1/source
[INFO] started tweaking crates.io crate nil-namegen 0.7.25
[INFO] finished tweaking crates.io crate nil-namegen 0.7.25
[INFO] tweaked toml for crates.io crate nil-namegen 0.7.25 written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate nil-namegen 0.7.25 on toolchain 1.99.0-beta.8
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.99.0-beta.8" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate nil-namegen 0.7.25 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.99.0-beta.8" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded itertools v0.15.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,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" "-m" "1610612736" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:77db811e55d90add9212f6832c23229e3de5f1c1f9905e8cb07319ea15df73ac" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] a2ddeb7248e1571bea1c032e50b560b3c7a53adea3f162624cc3fb29ea3dcade
[INFO] running `Command { std: "docker" "start" "a2ddeb7248e1571bea1c032e50b560b3c7a53adea3f162624cc3fb29ea3dcade", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a2ddeb7248e1571bea1c032e50b560b3c7a53adea3f162624cc3fb29ea3dcade", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-w" "/opt/rustwide/workdir" "--user" "0:0" "a2ddeb7248e1571bea1c032e50b560b3c7a53adea3f162624cc3fb29ea3dcade" "/opt/rustwide/cargo-home/bin/cargo" "+1.99.0-beta.8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a2ddeb7248e1571bea1c032e50b560b3c7a53adea3f162624cc3fb29ea3dcade", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-w" "/opt/rustwide/workdir" "--user" "0:0" "a2ddeb7248e1571bea1c032e50b560b3c7a53adea3f162624cc3fb29ea3dcade" "/opt/rustwide/cargo-home/bin/cargo" "+1.99.0-beta.8" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] error: rustc 1.99.0-beta.8 is not supported by the following package:
[INFO] [stderr]   nil-namegen@0.7.25 requires rustc 1.100
[INFO] [stderr] 
[INFO] running `Command { std: "docker" "inspect" "a2ddeb7248e1571bea1c032e50b560b3c7a53adea3f162624cc3fb29ea3dcade", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a2ddeb7248e1571bea1c032e50b560b3c7a53adea3f162624cc3fb29ea3dcade", kill_on_drop: false }`
[INFO] [stdout] a2ddeb7248e1571bea1c032e50b560b3c7a53adea3f162624cc3fb29ea3dcade
