[INFO] fetching crate zerodmg-codes 0.1.9...
[INFO] documenting zerodmg-codes-0.1.9 against beta-2020-10-09 for beta-1.48-rustdoc-1
[INFO] extracting crate zerodmg-codes 0.1.9 into /workspace/builds/worker-13/source
[INFO] validating manifest of crates.io crate zerodmg-codes 0.1.9 on toolchain beta-2020-10-09
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-10-09" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate zerodmg-codes 0.1.9
[INFO] finished tweaking crates.io crate zerodmg-codes 0.1.9
[INFO] tweaked toml for crates.io crate zerodmg-codes 0.1.9 written to /workspace/builds/worker-13/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-10-09" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-10-09" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: the cargo feature `edition` is now stable and is no longer necessary to be listed in the manifest
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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-2020-10-09" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e4d1e59fab50b4c01020de8b936f66a80cd6c4aea2a2853ce94e3e70502b5060
[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" "e4d1e59fab50b4c01020de8b936f66a80cd6c4aea2a2853ce94e3e70502b5060", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e4d1e59fab50b4c01020de8b936f66a80cd6c4aea2a2853ce94e3e70502b5060", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e4d1e59fab50b4c01020de8b936f66a80cd6c4aea2a2853ce94e3e70502b5060", kill_on_drop: false }`
[INFO] [stdout] e4d1e59fab50b4c01020de8b936f66a80cd6c4aea2a2853ce94e3e70502b5060
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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-2020-10-09" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ac3bc7a1d2aaf1c617f6f455d343870e1f68b595a046c63cee2eb43115b2198d
[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" "ac3bc7a1d2aaf1c617f6f455d343870e1f68b595a046c63cee2eb43115b2198d", 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] warning: the cargo feature `edition` is now stable and is no longer necessary to be listed in the manifest
[INFO] [stderr]    Compiling syn v0.13.11
[INFO] [stderr]     Checking png v0.12.0
[INFO] [stderr]     Checking image v0.19.0
[INFO] [stderr]     Checking zerodmg-utils v0.1.9
[INFO] [stderr]    Compiling derive_more v0.11.0
[INFO] [stderr]  Documenting zerodmg-codes v0.1.9 (/opt/rustwide/workdir)
[INFO] [stdout] warning[E0705]: the feature `rust_2018_preview` is included in the Rust 2018 edition
[INFO] [stdout]  --> src/lib.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(rust_2018_preview)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(rust_2018_preview)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/lib.rs:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(rust_2018_idioms)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/lib.rs:3:1
[INFO] [stdout]   |
[INFO] [stdout] 3 | #![feature(try_from)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: Compilation failed, aborting rustdoc
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 4 previous errors; 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0554, E0705.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not document `zerodmg-codes`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type lib --crate-name zerodmg_codes src/lib.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi --document-private-items -L dependency=/opt/rustwide/target/debug/deps --extern derive_more=/opt/rustwide/target/debug/deps/libderive_more-47780e36a11f9b58.so --extern zerodmg_utils=/opt/rustwide/target/debug/deps/libzerodmg_utils-d9a9a0317a18916e.rmeta --cap-lints=warn --crate-version 0.1.9` (exit code: 1)
[INFO] running `Command { std: "docker" "inspect" "ac3bc7a1d2aaf1c617f6f455d343870e1f68b595a046c63cee2eb43115b2198d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ac3bc7a1d2aaf1c617f6f455d343870e1f68b595a046c63cee2eb43115b2198d", kill_on_drop: false }`
[INFO] [stdout] ac3bc7a1d2aaf1c617f6f455d343870e1f68b595a046c63cee2eb43115b2198d
