[INFO] fetching crate dam 0.1.3...
[INFO] documenting dam-0.1.3 against beta-2020-10-09 for beta-1.48-rustdoc-1
[INFO] extracting crate dam 0.1.3 into /workspace/builds/worker-9/source
[INFO] validating manifest of crates.io crate dam 0.1.3 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 dam 0.1.3
[INFO] finished tweaking crates.io crate dam 0.1.3
[INFO] tweaked toml for crates.io crate dam 0.1.3 written to /workspace/builds/worker-9/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]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded open v1.4.0
[INFO] [stderr]   Downloaded rusqlite v0.16.0
[INFO] [stderr]   Downloaded libsqlite3-sys v0.11.1
[INFO] [stderr]   Downloaded rexif v0.3.7
[INFO] [stderr]   Downloaded checksum v0.2.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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] 88ce2c7175cfd234aa7761e573906caa4c48f960bee08bbad092562bd0dc9060
[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" "88ce2c7175cfd234aa7761e573906caa4c48f960bee08bbad092562bd0dc9060", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "88ce2c7175cfd234aa7761e573906caa4c48f960bee08bbad092562bd0dc9060", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "88ce2c7175cfd234aa7761e573906caa4c48f960bee08bbad092562bd0dc9060", kill_on_drop: false }`
[INFO] [stdout] 88ce2c7175cfd234aa7761e573906caa4c48f960bee08bbad092562bd0dc9060
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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] 1afc0a048a59e1d27b196bf1bbe70da6128dd8d7f91df7d64262263366a998ee
[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" "1afc0a048a59e1d27b196bf1bbe70da6128dd8d7f91df7d64262263366a998ee", kill_on_drop: false }`
[INFO] [stderr]     Checking rexif v0.3.7
[INFO] [stderr]     Checking open v1.4.0
[INFO] [stderr]     Checking checksum v0.2.1
[INFO] [stderr]    Compiling libsqlite3-sys v0.11.1
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking lru-cache v0.1.2
[INFO] [stderr]     Checking clap v2.33.3
[INFO] [stderr]     Checking rusqlite v0.16.0
[INFO] [stderr]  Documenting dam v0.1.3 (/opt/rustwide/workdir)
[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(try_trait, uniform_paths)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: Compilation failed, aborting rustdoc
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not document `dam`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type lib --crate-name dam 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 checksum=/opt/rustwide/target/debug/deps/libchecksum-92435770cbea8e69.rmeta --extern chrono=/opt/rustwide/target/debug/deps/libchrono-ef93aabf0656a46c.rmeta --extern clap=/opt/rustwide/target/debug/deps/libclap-a2c6ee58dc56692c.rmeta --extern open=/opt/rustwide/target/debug/deps/libopen-446dee27ca74f3e7.rmeta --extern rexif=/opt/rustwide/target/debug/deps/librexif-a12d53a544c40f2f.rmeta --extern rusqlite=/opt/rustwide/target/debug/deps/librusqlite-9318b0e8497a0405.rmeta --extern serde=/opt/rustwide/target/debug/deps/libserde-2566fd4b02fef410.rmeta --extern serde_json=/opt/rustwide/target/debug/deps/libserde_json-6fb93fe0f20d1b1f.rmeta --cap-lints=warn --crate-version 0.1.3` (exit code: 1)
[INFO] running `Command { std: "docker" "inspect" "1afc0a048a59e1d27b196bf1bbe70da6128dd8d7f91df7d64262263366a998ee", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1afc0a048a59e1d27b196bf1bbe70da6128dd8d7f91df7d64262263366a998ee", kill_on_drop: false }`
[INFO] [stdout] 1afc0a048a59e1d27b196bf1bbe70da6128dd8d7f91df7d64262263366a998ee
