[INFO] fetching crate pysprint-cli 0.1.0-alpha.0...
[INFO] documenting pysprint-cli-0.1.0-alpha.0 against 1.54.0 for beta-1.55-rustdoc-1
[INFO] extracting crate pysprint-cli 0.1.0-alpha.0 into /workspace/builds/worker-44/source
[INFO] validating manifest of crates.io crate pysprint-cli 0.1.0-alpha.0 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] removed /workspace/builds/worker-44/source/.cargo/config
[INFO] removed /workspace/builds/worker-44/source/rust-toolchain
[INFO] started tweaking crates.io crate pysprint-cli 0.1.0-alpha.0
[INFO] finished tweaking crates.io crate pysprint-cli 0.1.0-alpha.0
[INFO] tweaked toml for crates.io crate pysprint-cli 0.1.0-alpha.0 written to /workspace/builds/worker-44/source/Cargo.toml
[INFO] crate crates.io crate pysprint-cli 0.1.0-alpha.0 already has a lockfile, it will not be regenerated
[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] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded unic-segment v0.9.0
[INFO] [stderr]   Downloaded slug v0.1.4
[INFO] [stderr]   Downloaded unic-ucd-segment v0.9.0
[INFO] [stderr]   Downloaded deunicode v0.4.3
[INFO] [stderr]   Downloaded humansize v1.1.0
[INFO] [stderr]   Downloaded syn v1.0.67
[INFO] [stderr]   Downloaded ctrlc v3.1.8
[INFO] [stderr]   Downloaded globset v0.4.6
[INFO] [stderr]   Downloaded tera v1.7.0
[INFO] [stderr]   Downloaded wildmatch v2.0.0
[INFO] [stderr]   Downloaded ignore v0.4.17
[INFO] [stderr]   Downloaded globwalk v0.8.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-44/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-44/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] 5def4a6639e4ff992a243cfffc5f6ea12c704c79d3cee57facf969ed9ec36022
[INFO] running `Command { std: "docker" "start" "-a" "5def4a6639e4ff992a243cfffc5f6ea12c704c79d3cee57facf969ed9ec36022", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5def4a6639e4ff992a243cfffc5f6ea12c704c79d3cee57facf969ed9ec36022", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5def4a6639e4ff992a243cfffc5f6ea12c704c79d3cee57facf969ed9ec36022", kill_on_drop: false }`
[INFO] [stdout] 5def4a6639e4ff992a243cfffc5f6ea12c704c79d3cee57facf969ed9ec36022
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-44/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-44/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] 3f1ca2ff247493310b2794333af25e42eb745bba2324e31912345e456fec57d4
[INFO] running `Command { std: "docker" "start" "-a" "3f1ca2ff247493310b2794333af25e42eb745bba2324e31912345e456fec57d4", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling libc v0.2.91
[INFO] [stderr]    Compiling proc-macro2 v1.0.24
[INFO] [stderr]    Compiling syn v1.0.67
[INFO] [stderr]    Compiling getrandom v0.2.2
[INFO] [stderr]    Compiling regex-syntax v0.6.23
[INFO] [stderr]    Compiling ucd-trie v0.1.3
[INFO] [stderr]    Compiling serde v1.0.125
[INFO] [stderr]     Checking same-file v1.0.6
[INFO] [stderr]    Compiling maplit v1.0.2
[INFO] [stderr]     Checking unic-common v0.9.0
[INFO] [stderr]     Checking once_cell v1.7.2
[INFO] [stderr]     Checking unic-char-range v0.9.0
[INFO] [stderr]    Compiling unindent v0.1.7
[INFO] [stderr]    Compiling inventory v0.1.10
[INFO] [stderr]    Compiling serde_json v1.0.64
[INFO] [stderr]     Checking deunicode v0.4.3
[INFO] [stderr]     Checking lazycell v1.3.0
[INFO] [stderr]    Compiling pyo3 v0.13.2
[INFO] [stderr]     Checking unicode-width v0.1.8
[INFO] [stderr]     Checking remove_dir_all v0.5.3
[INFO] [stderr]     Checking humansize v1.1.0
[INFO] [stderr]     Checking ansi_term v0.11.0
[INFO] [stderr]     Checking strsim v0.8.0
[INFO] [stderr]     Checking vec_map v0.8.2
[INFO] [stderr]     Checking wildmatch v2.0.0
[INFO] [stderr]    Compiling crossbeam-utils v0.8.3
[INFO] [stderr]     Checking instant v0.1.9
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[INFO] [stderr]     Checking bstr v0.2.15
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[INFO] [stderr]     Checking unic-char-property v0.9.0
[INFO] [stderr]    Compiling pest v2.1.3
[INFO] [stderr]    Compiling aho-corasick v0.7.15
[INFO] [stderr]     Checking walkdir v2.3.2
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[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]     Checking paste v0.1.18
[INFO] [stderr]     Checking unic-segment v0.9.0
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]    Compiling pest_meta v2.1.3
[INFO] [stderr]     Checking net2 v0.2.37
[INFO] [stderr]     Checking time v0.1.43
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[INFO] [stderr]     Checking parking_lot_core v0.8.3
[INFO] [stderr]     Checking inotify-sys v0.1.5
[INFO] [stderr]     Checking nix v0.20.0
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[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]    Compiling regex v1.4.5
[INFO] [stderr]     Checking clap v2.33.3
[INFO] [stderr]     Checking inotify v0.7.1
[INFO] [stderr]     Checking rand_core v0.6.2
[INFO] [stderr]     Checking parking_lot v0.11.1
[INFO] [stderr]     Checking mio v0.6.23
[INFO] [stderr]     Checking chrono v0.4.19
[INFO] [stderr]     Checking rand_chacha v0.3.0
[INFO] [stderr]     Checking rand v0.8.3
[INFO] [stderr]     Checking mio-extras v2.0.6
[INFO] [stderr]    Compiling parse-zoneinfo v0.3.0
[INFO] [stderr]     Checking notify v4.0.15
[INFO] [stderr]     Checking globset v0.4.6
[INFO] [stderr]     Checking serde_yaml v0.8.17
[INFO] [stderr]     Checking tempfile v3.2.0
[INFO] [stderr]     Checking ignore v0.4.17
[INFO] [stderr]     Checking globwalk v0.8.1
[INFO] [stderr]    Compiling pest_generator v2.1.3
[INFO] [stderr]    Compiling pyo3-macros-backend v0.13.2
[INFO] [stderr]    Compiling chrono-tz v0.5.3
[INFO] [stderr]     Checking ctrlc v3.1.8
[INFO] [stderr]    Compiling inventory-impl v0.1.10
[INFO] [stderr]    Compiling indoc-impl v0.3.6
[INFO] [stderr]    Compiling ghost v0.1.2
[INFO] [stderr]    Compiling ctor v0.1.20
[INFO] [stderr]    Compiling pest_derive v2.1.0
[INFO] [stderr]    Compiling pyo3-macros v0.13.2
[INFO] [stderr]     Checking indoc v0.3.6
[INFO] [stderr]     Checking tera v1.7.0
[INFO] [stderr]  Documenting pysprint-cli v0.1.0-alpha.0 (/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(toowned_clone_into)]
[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 `pysprint-cli`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type lib --crate-name pysprint_cli 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 clap=/opt/rustwide/target/debug/deps/libclap-73b6ae59b73990c5.rmeta --extern ctrlc=/opt/rustwide/target/debug/deps/libctrlc-ea8764242394d67e.rmeta --extern lazy_static=/opt/rustwide/target/debug/deps/liblazy_static-acd7d23482fe8b54.rmeta --extern notify=/opt/rustwide/target/debug/deps/libnotify-4c6916bfe4978cf5.rmeta --extern pyo3=/opt/rustwide/target/debug/deps/libpyo3-f5bb70051a789040.rmeta --extern serde=/opt/rustwide/target/debug/deps/libserde-cde3df146d3c6f87.rmeta --extern serde_yaml=/opt/rustwide/target/debug/deps/libserde_yaml-d106f803de65b642.rmeta --extern tempfile=/opt/rustwide/target/debug/deps/libtempfile-e7a4f4aabf3e1b69.rmeta --extern tera=/opt/rustwide/target/debug/deps/libtera-c12eb8f0e544d166.rmeta --extern termcolor=/opt/rustwide/target/debug/deps/libtermcolor-64b286db08dc7112.rmeta --extern wildmatch=/opt/rustwide/target/debug/deps/libwildmatch-36da3aba6a69916b.rmeta --cap-lints=warn --crate-version 0.1.0-alpha.0` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "3f1ca2ff247493310b2794333af25e42eb745bba2324e31912345e456fec57d4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3f1ca2ff247493310b2794333af25e42eb745bba2324e31912345e456fec57d4", kill_on_drop: false }`
[INFO] [stdout] 3f1ca2ff247493310b2794333af25e42eb745bba2324e31912345e456fec57d4
