[INFO] fetching crate nix-doc 0.5.3...
[INFO] checking nix-doc-0.5.3 against master#ab869e094a907cc5d19b4080f22eccaf347f1f95 for pr-129604
[INFO] extracting crate nix-doc 0.5.3 into /workspace/builds/worker-6-tc1/source
[INFO] validating manifest of crates.io crate nix-doc 0.5.3 on toolchain ab869e094a907cc5d19b4080f22eccaf347f1f95
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate nix-doc 0.5.3
[INFO] finished tweaking crates.io crate nix-doc 0.5.3
[INFO] tweaked toml for crates.io crate nix-doc 0.5.3 written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] crate crates.io crate nix-doc 0.5.3 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" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded structopt v0.3.26
[INFO] [stderr]   Downloaded cbitset v0.2.0
[INFO] [stderr]   Downloaded smol_str v0.1.23
[INFO] [stderr]   Downloaded expect-test v1.2.2
[INFO] [stderr]   Downloaded dissimilar v1.0.4
[INFO] [stderr]   Downloaded text_unit v0.1.10
[INFO] [stderr]   Downloaded rnix v0.8.1
[INFO] [stderr]   Downloaded thin-dst v1.1.0
[INFO] [stderr]   Downloaded rowan v0.9.1
[INFO] [stderr]   Downloaded structopt-derive v0.4.18
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f2980a4e932a7318ad161d2484733fe032748381ec52ad41464294f60956d589
[INFO] running `Command { std: "docker" "start" "-a" "f2980a4e932a7318ad161d2484733fe032748381ec52ad41464294f60956d589", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f2980a4e932a7318ad161d2484733fe032748381ec52ad41464294f60956d589", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f2980a4e932a7318ad161d2484733fe032748381ec52ad41464294f60956d589", kill_on_drop: false }`
[INFO] [stdout] f2980a4e932a7318ad161d2484733fe032748381ec52ad41464294f60956d589
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/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" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 928e7e34bfbe57d6d429311b0ce617d640cb99b6c7eb1474ac5ef718188c2faf
[INFO] running `Command { std: "docker" "start" "-a" "928e7e34bfbe57d6d429311b0ce617d640cb99b6c7eb1474ac5ef718188c2faf", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.38
[INFO] [stderr]    Compiling unicode-xid v0.2.3
[INFO] [stderr]    Compiling libc v0.2.125
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling serde v1.0.137
[INFO] [stderr]    Compiling syn v1.0.92
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling memchr v2.5.0
[INFO] [stderr]    Compiling unicode-segmentation v1.9.0
[INFO] [stderr]     Checking rustc-hash v1.1.0
[INFO] [stderr]     Checking text_unit v0.1.10
[INFO] [stderr]     Checking thin-dst v1.1.0
[INFO] [stderr]    Compiling num-traits v0.2.15
[INFO] [stderr]     Checking pathdiff v0.2.1
[INFO] [stderr]     Checking colorful v0.2.1
[INFO] [stderr]     Checking dissimilar v1.0.4
[INFO] [stderr]     Checking expect-test v1.2.2
[INFO] [stderr]    Compiling heck v0.3.3
[INFO] [stderr]     Checking aho-corasick v0.7.18
[INFO] [stderr]    Compiling quote v1.0.18
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking num_cpus v1.13.1
[INFO] [stderr]     Checking clap v2.34.0
[INFO] [stderr]     Checking regex v1.5.5
[INFO] [stderr]     Checking cbitset v0.2.0
[INFO] [stderr]     Checking smol_str v0.1.23
[INFO] [stderr]     Checking rowan v0.9.1
[INFO] [stderr]     Checking rnix v0.8.1
[INFO] [stderr]    Compiling structopt-derive v0.4.18
[INFO] [stderr]     Checking structopt v0.3.26
[INFO] [stderr]     Checking nix-doc v0.5.3 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 8.47s
[INFO] running `Command { std: "docker" "inspect" "928e7e34bfbe57d6d429311b0ce617d640cb99b6c7eb1474ac5ef718188c2faf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "928e7e34bfbe57d6d429311b0ce617d640cb99b6c7eb1474ac5ef718188c2faf", kill_on_drop: false }`
[INFO] [stdout] 928e7e34bfbe57d6d429311b0ce617d640cb99b6c7eb1474ac5ef718188c2faf