[INFO] fetching crate iryna 0.1.4...
[INFO] documenting iryna-0.1.4 against 1.54.0 for beta-1.55-rustdoc-1
[INFO] extracting crate iryna 0.1.4 into /workspace/builds/worker-119/source
[INFO] validating manifest of crates.io crate iryna 0.1.4 on toolchain 1.54.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate iryna 0.1.4
[INFO] finished tweaking crates.io crate iryna 0.1.4
[INFO] tweaked toml for crates.io crate iryna 0.1.4 written to /workspace/builds/worker-119/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "fetch" "--manifest-path" "Cargo.toml", 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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-119/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-119/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+1.54.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 678f1d29f370149ec097263faee85b8113852436793dc12b13efc97c3ae11892
[INFO] running `Command { std: "docker" "start" "-a" "678f1d29f370149ec097263faee85b8113852436793dc12b13efc97c3ae11892", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "678f1d29f370149ec097263faee85b8113852436793dc12b13efc97c3ae11892", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "678f1d29f370149ec097263faee85b8113852436793dc12b13efc97c3ae11892", kill_on_drop: false }`
[INFO] [stdout] 678f1d29f370149ec097263faee85b8113852436793dc12b13efc97c3ae11892
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-119/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-119/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+1.54.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e87ee45d0848b1d3c7edfab861c3eea15d104d5097e23492f76811c67bdf2c33
[INFO] running `Command { std: "docker" "start" "-a" "e87ee45d0848b1d3c7edfab861c3eea15d104d5097e23492f76811c67bdf2c33", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling maybe-uninit v2.0.0
[INFO] [stderr]     Checking stable_deref_trait v1.2.0
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]     Checking slab v0.4.4
[INFO] [stderr]     Checking rand v0.4.6
[INFO] [stderr]     Checking net2 v0.2.37
[INFO] [stderr]     Checking iovec v0.1.4
[INFO] [stderr]     Checking owning_ref v0.3.3
[INFO] [stderr]     Checking mio v0.6.23
[INFO] [stderr]     Checking smallvec v0.6.14
[INFO] [stderr]     Checking parking_lot_core v0.2.14
[INFO] [stderr]     Checking parking_lot v0.4.8
[INFO] [stderr]     Checking chashmap v2.2.2
[INFO] [stderr]  Documenting iryna v0.1.4 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(match_default_bindings)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove the attribute
[INFO] [stdout]   |
[INFO] [stdout]   = help: the feature `match_default_bindings` has been stable since 1.26.0 and no longer requires an attribute to enable
[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 `iryna`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --crate-type lib --crate-name iryna 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 chashmap=/opt/rustwide/target/debug/deps/libchashmap-cfc8595fc99722ea.rmeta --extern mio=/opt/rustwide/target/debug/deps/libmio-4d8faed75bde785f.rmeta --cap-lints=warn --crate-version 0.1.4` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "e87ee45d0848b1d3c7edfab861c3eea15d104d5097e23492f76811c67bdf2c33", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e87ee45d0848b1d3c7edfab861c3eea15d104d5097e23492f76811c67bdf2c33", kill_on_drop: false }`
[INFO] [stdout] e87ee45d0848b1d3c7edfab861c3eea15d104d5097e23492f76811c67bdf2c33
