[INFO] fetching crate iso8583 0.1.1...
[INFO] documenting iso8583-0.1.1 against 1.47.0 for beta-1.48-rustdoc-1
[INFO] extracting crate iso8583 0.1.1 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate iso8583 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 iso8583 0.1.1
[INFO] finished tweaking crates.io crate iso8583 0.1.1
[INFO] tweaked toml for crates.io crate iso8583 0.1.1 written to /workspace/builds/worker-4/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-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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] 8a0e9f0996f76378e68436ec3850ab9a740ff2970efc6b432e573c7876b24321
[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" "8a0e9f0996f76378e68436ec3850ab9a740ff2970efc6b432e573c7876b24321", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8a0e9f0996f76378e68436ec3850ab9a740ff2970efc6b432e573c7876b24321", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8a0e9f0996f76378e68436ec3850ab9a740ff2970efc6b432e573c7876b24321", kill_on_drop: false }`
[INFO] [stdout] 8a0e9f0996f76378e68436ec3850ab9a740ff2970efc6b432e573c7876b24321
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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] a474d86b22194595da232c32fb5f3bbe8175e3951a982597bfa142e3ea3f5834
[INFO] running `Command { std: "docker" "start" "-a" "a474d86b22194595da232c32fb5f3bbe8175e3951a982597bfa142e3ea3f5834", kill_on_drop: false }`
[INFO] [stderr]     Checking nodrop v0.1.14
[INFO] [stderr]     Checking serde_yaml v0.7.5
[INFO] [stderr]     Checking generic-array v0.3.2
[INFO] [stderr]     Checking bit-array v0.4.4
[INFO] [stderr]  Documenting iso8583 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:9:1
[INFO] [stdout]   |
[INFO] [stdout] 9 | #![feature(type_ascription)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]   --> src/lib.rs:10:1
[INFO] [stdout]    |
[INFO] [stdout] 10 | #![feature(test)]
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: Compilation failed, aborting rustdoc
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 3 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 `iso8583`.
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --crate-type lib --crate-name iso8583 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 bit_array=/opt/rustwide/target/debug/deps/libbit_array-fd09f6bb03af093e.rmeta --extern log=/opt/rustwide/target/debug/deps/liblog-7716449a6325aa11.rmeta --extern serde=/opt/rustwide/target/debug/deps/libserde-eb6cdf579abc545a.rmeta --extern serde_derive=/opt/rustwide/target/debug/deps/libserde_derive-5f078a3096470b53.so --extern serde_yaml=/opt/rustwide/target/debug/deps/libserde_yaml-60d7d2a7a7eafbcc.rmeta --extern typenum=/opt/rustwide/target/debug/deps/libtypenum-30a64c794105ca2b.rmeta --extern yaml_rust=/opt/rustwide/target/debug/deps/libyaml_rust-9e95e444906c0ab8.rmeta --cap-lints=warn --crate-version 0.1.1` (exit code: 1)
[INFO] running `Command { std: "docker" "inspect" "a474d86b22194595da232c32fb5f3bbe8175e3951a982597bfa142e3ea3f5834", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a474d86b22194595da232c32fb5f3bbe8175e3951a982597bfa142e3ea3f5834", kill_on_drop: false }`
[INFO] [stdout] a474d86b22194595da232c32fb5f3bbe8175e3951a982597bfa142e3ea3f5834
