[INFO] fetching crate feembox 0.1.1...
[INFO] documenting feembox-0.1.1 against beta-2020-08-29 for beta-1.47-rustdoc-1
[INFO] extracting crate feembox 0.1.1 into /workspace/builds/worker-12/source
[INFO] validating manifest of crates.io crate feembox 0.1.1 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 feembox 0.1.1
[INFO] finished tweaking crates.io crate feembox 0.1.1
[INFO] tweaked toml for crates.io crate feembox 0.1.1 written to /workspace/builds/worker-12/source/Cargo.toml
[INFO] crate crates.io crate feembox 0.1.1 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 checked_command v0.2.2
[INFO] [stderr]   Downloaded feed-rs v0.2.4
[INFO] [stderr]   Downloaded mail-headers v0.6.6
[INFO] [stderr]   Downloaded soft-ascii-string v1.1.0
[INFO] [stderr]   Downloaded lut v0.1.0-unstable
[INFO] [stderr]   Downloaded vec1 v1.5.0
[INFO] [stderr]   Downloaded vec-drain-where v1.0.1
[INFO] [stderr]   Downloaded total-order-multi-map v0.4.6
[INFO] [stderr]   Downloaded mail-internals v0.2.3
[INFO] [stderr]   Downloaded media-type-impl-utils v0.3.0-unstable
[INFO] [stderr]   Downloaded quoted-string v0.6.1
[INFO] [stderr]   Downloaded mailparse v0.12.1
[INFO] [stderr]   Downloaded media-type v0.4.0-unstable
[INFO] [stderr]   Downloaded mail-core v0.6.2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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] 2cacfee61a48b856d9a2dc56809f4092ec430f90fa1181ef63ae8167d9f17409
[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" "2cacfee61a48b856d9a2dc56809f4092ec430f90fa1181ef63ae8167d9f17409", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2cacfee61a48b856d9a2dc56809f4092ec430f90fa1181ef63ae8167d9f17409", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2cacfee61a48b856d9a2dc56809f4092ec430f90fa1181ef63ae8167d9f17409", kill_on_drop: false }`
[INFO] [stdout] 2cacfee61a48b856d9a2dc56809f4092ec430f90fa1181ef63ae8167d9f17409
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 6c13e8dfc499b69b2ac9361c1138932dafff12c9fd6b6cb8b5ddc4fc11cd4190
[INFO] running `Command { std: "docker" "start" "-a" "6c13e8dfc499b69b2ac9361c1138932dafff12c9fd6b6cb8b5ddc4fc11cd4190", 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] [stderr]    Compiling libc v0.2.71
[INFO] [stderr]    Compiling syn v1.0.30
[INFO] [stderr]     Checking quoted-string v0.6.1
[INFO] [stderr]     Checking quoted_printable v0.4.2
[INFO] [stderr]     Checking vec-drain-where v1.0.1
[INFO] [stderr]     Checking soft-ascii-string v1.1.0
[INFO] [stderr]    Compiling checked_command v0.2.2
[INFO] [stderr]     Checking vec1 v1.5.0
[INFO] [stderr]     Checking itoa v0.4.5
[INFO] [stderr]     Checking siphasher v0.3.3
[INFO] [stderr]     Checking lut v0.1.0-unstable
[INFO] [stderr]     Checking owning_ref v0.4.1
[INFO] [stderr]     Checking tabwriter v1.2.1
[INFO] [stderr]     Checking linked_hash_set v0.1.3
[INFO] [stderr]    Compiling quote v1.0.6
[INFO] [stderr]     Checking idna v0.1.5
[INFO] [stderr]     Checking charset v0.1.2
[INFO] [stderr]     Checking total-order-multi-map v0.4.6
[INFO] [stderr]     Checking mailparse v0.12.1
[INFO] [stderr]     Checking media-type-impl-utils v0.3.0-unstable
[INFO] [stderr]     Checking media-type v0.4.0-unstable
[INFO] [stderr]     Checking time v0.1.43
[INFO] [stderr]     Checking getrandom v0.1.14
[INFO] [stderr]     Checking memchr v1.0.2
[INFO] [stderr]     Checking backtrace v0.3.48
[INFO] [stderr]     Checking rand v0.4.6
[INFO] [stderr]     Checking num_cpus v1.13.0
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking hostname v0.3.1
[INFO] [stderr]     Checking memmap v0.7.0
[INFO] [stderr]     Checking clap v2.33.1
[INFO] [stderr]     Checking nom v3.2.1
[INFO] [stderr]     Checking futures-cpupool v0.1.8
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking chrono v0.4.11
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]     Checking rand v0.3.23
[INFO] [stderr]     Checking uuid v0.8.1
[INFO] [stderr]    Compiling synstructure v0.12.3
[INFO] [stderr]    Compiling failure_derive v0.1.8
[INFO] [stderr]    Compiling serde_derive v1.0.111
[INFO] [stderr]     Checking failure v0.1.8
[INFO] [stderr]     Checking mail-internals v0.2.3
[INFO] [stderr]     Checking mail-headers v0.6.6
[INFO] [stderr]     Checking mail-core v0.6.2
[INFO] [stderr]     Checking serde v1.0.111
[INFO] [stderr]     Checking serde_json v1.0.53
[INFO] [stderr]     Checking feed-rs v0.2.4
[INFO] [stderr]  Documenting feembox v0.1.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 50.52s
[INFO] running `Command { std: "docker" "inspect" "6c13e8dfc499b69b2ac9361c1138932dafff12c9fd6b6cb8b5ddc4fc11cd4190", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6c13e8dfc499b69b2ac9361c1138932dafff12c9fd6b6cb8b5ddc4fc11cd4190", kill_on_drop: false }`
[INFO] [stdout] 6c13e8dfc499b69b2ac9361c1138932dafff12c9fd6b6cb8b5ddc4fc11cd4190