[INFO] fetching crate tetra 0.4.2...
[INFO] documenting tetra-0.4.2 against beta-2020-08-29 for beta-1.47-rustdoc-1
[INFO] extracting crate tetra 0.4.2 into /workspace/builds/worker-12/source
[INFO] validating manifest of crates.io crate tetra 0.4.2 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 tetra 0.4.2
[INFO] finished tweaking crates.io crate tetra 0.4.2
[INFO] tweaked toml for crates.io crate tetra 0.4.2 written to /workspace/builds/worker-12/source/Cargo.toml
[INFO] crate crates.io crate tetra 0.4.2 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]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded glow v0.5.0
[INFO] [stderr]   Downloaded ttf-parser v0.6.1
[INFO] [stderr]   Downloaded vek v0.11.2
[INFO] [stderr]   Downloaded image v0.23.1
[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] 0966df0dbffa526e119ba3b9b8b886506374b3572da45a74d46290d4246bf386
[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" "0966df0dbffa526e119ba3b9b8b886506374b3572da45a74d46290d4246bf386", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0966df0dbffa526e119ba3b9b8b886506374b3572da45a74d46290d4246bf386", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0966df0dbffa526e119ba3b9b8b886506374b3572da45a74d46290d4246bf386", kill_on_drop: false }`
[INFO] [stdout] 0966df0dbffa526e119ba3b9b8b886506374b3572da45a74d46290d4246bf386
[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] [stdout] 7c5a1f9a377b9f98e2a4762267c3388fceac188265e26286abe9772813f38166
[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" "7c5a1f9a377b9f98e2a4762267c3388fceac188265e26286abe9772813f38166", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.14
[INFO] [stderr]    Compiling cpal v0.11.0
[INFO] [stderr]     Checking ttf-parser v0.6.1
[INFO] [stderr]    Compiling sdl2 v0.34.2
[INFO] [stderr]     Checking ahash v0.3.2
[INFO] [stderr]    Compiling sdl2-sys v0.34.2
[INFO] [stderr]    Compiling alsa-sys v0.1.2
[INFO] [stderr]    Compiling minimp3-sys v0.3.1
[INFO] [stderr]    Compiling hashbrown v0.8.0
[INFO] [stderr]     Checking deflate v0.8.6
[INFO] [stderr]     Checking tiff v0.4.0
[INFO] [stderr]     Checking num_cpus v1.13.0
[INFO] [stderr]     Checking slice-deque v0.2.4
[INFO] [stderr]    Compiling vek v0.11.2
[INFO] [stderr]     Checking lewton v0.10.1
[INFO] [stderr]    Compiling gl_generator v0.14.0
[INFO] [stderr]     Checking approx v0.3.2
[INFO] [stderr]     Checking rayon-core v1.7.1
[INFO] [stderr]     Checking png v0.16.6
[INFO] [stderr]     Checking rayon v1.3.1
[INFO] [stderr]     Checking minimp3 v0.3.3
[INFO] [stderr]    Compiling glow v0.5.0
[INFO] [stderr]     Checking owned_ttf_parser v0.6.0
[INFO] [stderr]     Checking ab_glyph v0.2.2
[INFO] [stderr]     Checking jpeg-decoder v0.1.20
[INFO] [stderr]     Checking image v0.23.1
[INFO] [stderr]    Compiling thiserror-impl v1.0.13
[INFO] [stderr]     Checking thiserror v1.0.13
[INFO] [stderr]     Checking rodio v0.11.0
[INFO] [stderr]  Documenting tetra v0.4.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 02s
[INFO] running `Command { std: "docker" "inspect" "7c5a1f9a377b9f98e2a4762267c3388fceac188265e26286abe9772813f38166", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7c5a1f9a377b9f98e2a4762267c3388fceac188265e26286abe9772813f38166", kill_on_drop: false }`
[INFO] [stdout] 7c5a1f9a377b9f98e2a4762267c3388fceac188265e26286abe9772813f38166