[INFO] cloning repository https://github.com/CreatorSiSo/school_filter_saxony
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/CreatorSiSo/school_filter_saxony" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FCreatorSiSo%2Fschool_filter_saxony", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FCreatorSiSo%2Fschool_filter_saxony'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 6edba2112e54cacd90ac26a8f1283ba25be1fb76
[INFO] documenting CreatorSiSo/school_filter_saxony against 1.76.0 for beta-1.77-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FCreatorSiSo%2Fschool_filter_saxony" "/workspace/builds/worker-3-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/CreatorSiSo/school_filter_saxony on toolchain 1.76.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.76.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/CreatorSiSo/school_filter_saxony
[INFO] finished tweaking git repo https://github.com/CreatorSiSo/school_filter_saxony
[INFO] tweaked toml for git repo https://github.com/CreatorSiSo/school_filter_saxony written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/CreatorSiSo/school_filter_saxony already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.76.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.76.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8b4daeb09524c0e92d09209c317a096d8b04525c9296744046de64bb52c1bc84
[INFO] running `Command { std: "docker" "start" "-a" "8b4daeb09524c0e92d09209c317a096d8b04525c9296744046de64bb52c1bc84", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8b4daeb09524c0e92d09209c317a096d8b04525c9296744046de64bb52c1bc84", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8b4daeb09524c0e92d09209c317a096d8b04525c9296744046de64bb52c1bc84", kill_on_drop: false }`
[INFO] [stdout] 8b4daeb09524c0e92d09209c317a096d8b04525c9296744046de64bb52c1bc84
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/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" "RUSTFLAGS=--cap-lints=warn" "-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.76.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ceaf09af11feae52e9e4e1022909629bfdbebebf508b167390c2c342737a1aa1
[INFO] running `Command { std: "docker" "start" "-a" "ceaf09af11feae52e9e4e1022909629bfdbebebf508b167390c2c342737a1aa1", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.78
[INFO] [stderr]    Compiling cc v1.0.79
[INFO] [stderr]     Checking spin v0.5.2
[INFO] [stderr]     Checking untrusted v0.7.1
[INFO] [stderr]    Compiling serde_derive v1.0.158
[INFO] [stderr]     Checking tinyvec_macros v0.1.1
[INFO] [stderr]    Compiling crc32fast v1.3.2
[INFO] [stderr]    Compiling memchr v2.5.0
[INFO] [stderr]    Compiling serde v1.0.158
[INFO] [stderr]     Checking adler v1.0.2
[INFO] [stderr]    Compiling thiserror v1.0.56
[INFO] [stderr]    Compiling libc v0.2.140
[INFO] [stderr]    Compiling rustls v0.20.8
[INFO] [stderr]     Checking unicode-bidi v0.3.13
[INFO] [stderr]     Checking thread_local v1.1.7
[INFO] [stderr]    Compiling serde_json v1.0.94
[INFO] [stderr]     Checking tinyvec v1.6.0
[INFO] [stderr]    Compiling anyhow v1.0.70
[INFO] [stderr]     Checking miniz_oxide v0.6.2
[INFO] [stderr]     Checking unicode-width v0.1.10
[INFO] [stderr]     Checking base64 v0.13.1
[INFO] [stderr]     Checking fuzzy-matcher v0.3.7
[INFO] [stderr]     Checking shell-words v1.1.0
[INFO] [stderr]     Checking flate2 v1.0.25
[INFO] [stderr]     Checking csv-core v0.1.10
[INFO] [stderr]     Checking console v0.15.5
[INFO] [stderr]    Compiling quote v1.0.35
[INFO] [stderr]    Compiling ring v0.16.20
[INFO] [stderr]    Compiling syn v2.0.48
[INFO] [stderr]     Checking unicode-normalization v0.1.22
[INFO] [stderr]     Checking idna v0.3.0
[INFO] [stderr]     Checking url v2.3.1
[INFO] [stderr]    Compiling thiserror-impl v1.0.56
[INFO] [stderr]     Checking webpki v0.22.0
[INFO] [stderr]     Checking sct v0.7.0
[INFO] [stderr]     Checking dialoguer v0.11.0
[INFO] [stderr]     Checking webpki-roots v0.22.6
[INFO] [stderr]     Checking ureq v2.6.2
[INFO] [stderr]     Checking csv v1.2.1
[INFO] [stderr]  Documenting school_filter_saxony v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/main.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(iterator_try_collect)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 1 previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not document `school_filter_saxony`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/rustwide/rustup-home/toolchains/1.76.0-x86_64-unknown-linux-gnu/bin/rustdoc --edition=2021 --crate-type bin --crate-name school_filter_saxony src/main.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items '-Arustdoc::private-intra-doc-links' -C metadata=523a6382c1d5d9d1 -L dependency=/opt/rustwide/target/debug/deps --extern anyhow=/opt/rustwide/target/debug/deps/libanyhow-3d8cb46bd43a66f4.rmeta --extern csv=/opt/rustwide/target/debug/deps/libcsv-2ebe7bac0b36f76a.rmeta --extern dialoguer=/opt/rustwide/target/debug/deps/libdialoguer-73ca784d7fdaa0b7.rmeta --extern serde=/opt/rustwide/target/debug/deps/libserde-a81c173d9b15305a.rmeta --extern serde_json=/opt/rustwide/target/debug/deps/libserde_json-9ed5fed199e4e3e1.rmeta --extern ureq=/opt/rustwide/target/debug/deps/libureq-3d5d5f733bb305ac.rmeta --cap-lints=warn --crate-version 0.1.0` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "ceaf09af11feae52e9e4e1022909629bfdbebebf508b167390c2c342737a1aa1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ceaf09af11feae52e9e4e1022909629bfdbebebf508b167390c2c342737a1aa1", kill_on_drop: false }`
[INFO] [stdout] ceaf09af11feae52e9e4e1022909629bfdbebebf508b167390c2c342737a1aa1
