[INFO] fetching crate atter 0.1.1...
[INFO] documenting atter-0.1.1 against 1.47.0 for beta-1.48-rustdoc-1
[INFO] extracting crate atter 0.1.1 into /workspace/builds/worker-1/source
[INFO] validating manifest of crates.io crate atter 0.1.1 on toolchain 1.47.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.47.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate atter 0.1.1
[INFO] finished tweaking crates.io crate atter 0.1.1
[INFO] tweaked toml for crates.io crate atter 0.1.1 written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.47.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.47.0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "+1.47.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 5cbc02a636a3a95eb899597bdd1c97b6bf7f8170b5290a6ba678234323abf4e1
[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" "5cbc02a636a3a95eb899597bdd1c97b6bf7f8170b5290a6ba678234323abf4e1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5cbc02a636a3a95eb899597bdd1c97b6bf7f8170b5290a6ba678234323abf4e1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5cbc02a636a3a95eb899597bdd1c97b6bf7f8170b5290a6ba678234323abf4e1", kill_on_drop: false }`
[INFO] [stdout] 5cbc02a636a3a95eb899597bdd1c97b6bf7f8170b5290a6ba678234323abf4e1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "+1.47.0" "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] ecdaca89d7ba7ee691b8f0ff788c913de12ab448cc35910b458f26f6e5e69e2a
[INFO] running `Command { std: "docker" "start" "-a" "ecdaca89d7ba7ee691b8f0ff788c913de12ab448cc35910b458f26f6e5e69e2a", 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]     Checking ahash v0.4.6
[INFO] [stderr]     Checking ucd-util v0.1.8
[INFO] [stderr]    Compiling regex v0.2.11
[INFO] [stderr]     Checking utf8-ranges v1.0.4
[INFO] [stderr]     Checking sha1 v0.6.0
[INFO] [stderr]    Compiling libsqlite3-sys v0.20.1
[INFO] [stderr]    Compiling error-chain v0.12.4
[INFO] [stderr]     Checking thread_local v0.3.6
[INFO] [stderr]     Checking toml v0.5.7
[INFO] [stderr]     Checking aho-corasick v0.6.10
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]     Checking regex-syntax v0.5.6
[INFO] [stderr]     Checking uuid v0.6.5
[INFO] [stderr]     Checking hashbrown v0.9.1
[INFO] [stderr]    Compiling getset v0.1.1
[INFO] [stderr]     Checking hashlink v0.6.0
[INFO] [stderr]     Checking rusqlite v0.24.1
[INFO] [stderr]  Documenting atter v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]    --> src/lib.rs:279:1
[INFO] [stdout]     |
[INFO] [stdout] 279 | #![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 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 `atter`.
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --crate-type lib --crate-name atter 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 chrono=/opt/rustwide/target/debug/deps/libchrono-a9c32aff8e87a086.rmeta --extern error_chain=/opt/rustwide/target/debug/deps/liberror_chain-42225fdd968d3e7c.rmeta --extern getset=/opt/rustwide/target/debug/deps/libgetset-4774437b855114c2.so --extern regex=/opt/rustwide/target/debug/deps/libregex-ba02aa9dd7049a86.rmeta --extern rusqlite=/opt/rustwide/target/debug/deps/librusqlite-3d37288c66518b21.rmeta --extern serde=/opt/rustwide/target/debug/deps/libserde-eb6cdf579abc545a.rmeta --extern serde_derive=/opt/rustwide/target/debug/deps/libserde_derive-5f078a3096470b53.so --extern toml=/opt/rustwide/target/debug/deps/libtoml-82558988e5b33180.rmeta --extern url=/opt/rustwide/target/debug/deps/liburl-66a001f9bc337575.rmeta --extern uuid=/opt/rustwide/target/debug/deps/libuuid-426a1fdadd3b0f1e.rmeta --cap-lints=warn --crate-version 0.1.1` (exit code: 1)
[INFO] running `Command { std: "docker" "inspect" "ecdaca89d7ba7ee691b8f0ff788c913de12ab448cc35910b458f26f6e5e69e2a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ecdaca89d7ba7ee691b8f0ff788c913de12ab448cc35910b458f26f6e5e69e2a", kill_on_drop: false }`
[INFO] [stdout] ecdaca89d7ba7ee691b8f0ff788c913de12ab448cc35910b458f26f6e5e69e2a
