[INFO] cloning repository https://github.com/pigeon-working-group/serde-perf
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/pigeon-working-group/serde-perf" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpigeon-working-group%2Fserde-perf", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpigeon-working-group%2Fserde-perf'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 7f51f0bc263632e4b03791f2b56958bed69a38bb
[INFO] documenting pigeon-working-group/serde-perf against beta-2022-05-20 for beta-1.62-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpigeon-working-group%2Fserde-perf" "/workspace/builds/worker-28/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-28/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/pigeon-working-group/serde-perf on toolchain beta-2022-05-20
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-05-20" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/pigeon-working-group/serde-perf
[INFO] finished tweaking git repo https://github.com/pigeon-working-group/serde-perf
[INFO] tweaked toml for git repo https://github.com/pigeon-working-group/serde-perf written to /workspace/builds/worker-28/source/Cargo.toml
[INFO] crate git repo https://github.com/pigeon-working-group/serde-perf already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-05-20" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-28/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-28/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" "+beta-2022-05-20" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8c3ef565006e52fe0b093ec0aca490cea24af27fc59bf06eaf0eab3553034612
[INFO] running `Command { std: "docker" "start" "-a" "8c3ef565006e52fe0b093ec0aca490cea24af27fc59bf06eaf0eab3553034612", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8c3ef565006e52fe0b093ec0aca490cea24af27fc59bf06eaf0eab3553034612", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8c3ef565006e52fe0b093ec0aca490cea24af27fc59bf06eaf0eab3553034612", kill_on_drop: false }`
[INFO] [stdout] 8c3ef565006e52fe0b093ec0aca490cea24af27fc59bf06eaf0eab3553034612
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-28/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-28/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" "+beta-2022-05-20" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8db998a2707847e5e20f440ae9838f9a2f922c2869284c524048d76466780932
[INFO] running `Command { std: "docker" "start" "-a" "8db998a2707847e5e20f440ae9838f9a2f922c2869284c524048d76466780932", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling unicode-xid v0.0.4
[INFO] [stderr]     Checking num-traits v0.2.1
[INFO] [stderr]    Compiling quote v0.3.15
[INFO] [stderr]     Checking libc v0.2.39
[INFO] [stderr]     Checking byteorder v1.2.1
[INFO] [stderr]     Checking dtoa v0.4.2
[INFO] [stderr]     Checking itoa v0.3.4
[INFO] [stderr]     Checking linked-hash-map v0.5.1
[INFO] [stderr]     Checking bitflags v1.0.1
[INFO] [stderr]     Checking iter-read v0.1.0
[INFO] [stderr]     Checking hex v0.2.0
[INFO] [stderr]    Compiling rust-crypto v0.2.36
[INFO] [stderr]    Compiling synom v0.11.3
[INFO] [stderr]    Compiling syn v0.11.11
[INFO] [stderr]     Checking rand v0.4.2
[INFO] [stderr]     Checking time v0.1.39
[INFO] [stderr]     Checking hostname v0.1.4
[INFO] [stderr]     Checking num-integer v0.1.36
[INFO] [stderr]     Checking num-traits v0.1.43
[INFO] [stderr]     Checking rmp v0.8.7
[INFO] [stderr]     Checking num-iter v0.1.35
[INFO] [stderr]     Checking num v0.1.42
[INFO] [stderr]     Checking chrono v0.4.0
[INFO] [stderr]     Checking rand v0.3.22
[INFO] [stderr]     Checking num-bigint v0.1.43
[INFO] [stderr]    Compiling serde_derive_internals v0.19.0
[INFO] [stderr]    Compiling serde_derive v1.0.27
[INFO] [stderr]     Checking serde v1.0.27
[INFO] [stderr]     Checking serde_json v1.0.11
[INFO] [stderr]     Checking rmp-serde v0.13.7
[INFO] [stderr]     Checking bincode v1.0.0
[INFO] [stderr]     Checking ron v0.2.0
[INFO] [stderr]     Checking serde_cbor v0.8.2
[INFO] [stderr]     Checking serde-pickle v0.4.0
[INFO] [stderr]     Checking bson v0.11.1
[INFO] [stderr]  Documenting serde-perf v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 27.39s
[INFO] running `Command { std: "docker" "inspect" "8db998a2707847e5e20f440ae9838f9a2f922c2869284c524048d76466780932", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8db998a2707847e5e20f440ae9838f9a2f922c2869284c524048d76466780932", kill_on_drop: false }`
[INFO] [stdout] 8db998a2707847e5e20f440ae9838f9a2f922c2869284c524048d76466780932