[INFO] fetching crate isner 0.0.1-alpha.1...
[INFO] documenting isner-0.0.1-alpha.1 against beta-2020-08-29 for beta-1.47-rustdoc-1
[INFO] extracting crate isner 0.0.1-alpha.1 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate isner 0.0.1-alpha.1 on toolchain beta-2020-08-29
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-08-29" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate isner 0.0.1-alpha.1
[INFO] finished tweaking crates.io crate isner 0.0.1-alpha.1
[INFO] tweaked toml for crates.io crate isner 0.0.1-alpha.1 written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate crates.io crate isner 0.0.1-alpha.1 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-08-29" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded fehler-macros v1.0.0
[INFO] [stderr]   Downloaded fehler v1.0.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-08-29" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d5fe1bce1493ee2e37b7391c4c0a06a7c3601e782dbcdf007a2950f4ea4227ea
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "d5fe1bce1493ee2e37b7391c4c0a06a7c3601e782dbcdf007a2950f4ea4227ea", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d5fe1bce1493ee2e37b7391c4c0a06a7c3601e782dbcdf007a2950f4ea4227ea", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d5fe1bce1493ee2e37b7391c4c0a06a7c3601e782dbcdf007a2950f4ea4227ea", kill_on_drop: false }`
[INFO] [stdout] d5fe1bce1493ee2e37b7391c4c0a06a7c3601e782dbcdf007a2950f4ea4227ea
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-08-29" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8a94e1bf05e3b8b798cbd1fc1a279b5edcf3520f63df9921ed08fba3e773332c
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "8a94e1bf05e3b8b798cbd1fc1a279b5edcf3520f63df9921ed08fba3e773332c", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.17
[INFO] [stderr]    Compiling syn v1.0.29
[INFO] [stderr]     Checking threadpool v1.8.1
[INFO] [stderr]     Checking http v0.2.1
[INFO] [stderr]     Checking env_logger v0.7.1
[INFO] [stderr]    Compiling quote v1.0.6
[INFO] [stderr]    Compiling fehler-macros v1.0.0
[INFO] [stderr]    Compiling thiserror-impl v1.0.19
[INFO] [stderr]     Checking thiserror v1.0.19
[INFO] [stderr]     Checking fehler v1.0.0
[INFO] [stderr]  Documenting isner v0.0.1-alpha.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 24.24s
[INFO] running `Command { std: "docker" "inspect" "8a94e1bf05e3b8b798cbd1fc1a279b5edcf3520f63df9921ed08fba3e773332c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8a94e1bf05e3b8b798cbd1fc1a279b5edcf3520f63df9921ed08fba3e773332c", kill_on_drop: false }`
[INFO] [stdout] 8a94e1bf05e3b8b798cbd1fc1a279b5edcf3520f63df9921ed08fba3e773332c