[INFO] cloning repository https://github.com/ajkachnic/zebra
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ajkachnic/zebra" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fajkachnic%2Fzebra", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fajkachnic%2Fzebra'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] f874b0f679f8baab37ce308c3b22277f26aedc9d
[INFO] documenting ajkachnic/zebra against 1.75.0 for beta-1.76-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fajkachnic%2Fzebra" "/workspace/builds/worker-0-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/ajkachnic/zebra on toolchain 1.75.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.75.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/ajkachnic/zebra
[INFO] finished tweaking git repo https://github.com/ajkachnic/zebra
[INFO] tweaked toml for git repo https://github.com/ajkachnic/zebra written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/ajkachnic/zebra 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" "+1.75.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating git repository `https://github.com/salsa-rs/salsa.git`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded ordered-float v3.6.0
[INFO] [stderr]   Downloaded miette v5.5.0
[INFO] [stderr]   Downloaded miette-derive v5.5.0
[INFO] [stderr]   Downloaded cranelift-codegen-shared v0.92.0
[INFO] [stderr]   Downloaded cranelift v0.92.0
[INFO] [stderr]   Downloaded cranelift-bforest v0.92.0
[INFO] [stderr]   Downloaded cranelift-frontend v0.92.0
[INFO] [stderr]   Downloaded cranelift-entity v0.92.0
[INFO] [stderr]   Downloaded cranelift-isle v0.92.0
[INFO] [stderr]   Downloaded cranelift-codegen-meta v0.92.0
[INFO] [stderr]   Downloaded cranelift-codegen v0.92.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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" "+1.75.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c4b25d2192adf1ea6179eacee61a9812420fe04b1df912f589eae7c8aebe9e57
[INFO] running `Command { std: "docker" "start" "-a" "c4b25d2192adf1ea6179eacee61a9812420fe04b1df912f589eae7c8aebe9e57", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c4b25d2192adf1ea6179eacee61a9812420fe04b1df912f589eae7c8aebe9e57", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c4b25d2192adf1ea6179eacee61a9812420fe04b1df912f589eae7c8aebe9e57", kill_on_drop: false }`
[INFO] [stdout] c4b25d2192adf1ea6179eacee61a9812420fe04b1df912f589eae7c8aebe9e57
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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" "+1.75.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 07089c4ff18d222ba5b91f981f106e29ed1d2d5cee64aaacd3e2f15774d1138b
[INFO] running `Command { std: "docker" "start" "-a" "07089c4ff18d222ba5b91f981f106e29ed1d2d5cee64aaacd3e2f15774d1138b", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.51
[INFO] [stderr]    Compiling libc v0.2.139
[INFO] [stderr]    Compiling num-traits v0.2.15
[INFO] [stderr]    Compiling ahash v0.7.6
[INFO] [stderr]    Compiling syn v1.0.107
[INFO] [stderr]    Compiling crossbeam-utils v0.8.15
[INFO] [stderr]     Checking smallvec v1.10.0
[INFO] [stderr]    Compiling cranelift-isle v0.92.0
[INFO] [stderr]    Compiling memoffset v0.8.0
[INFO] [stderr]    Compiling memchr v2.5.0
[INFO] [stderr]    Compiling num-integer v0.1.45
[INFO] [stderr]    Compiling cranelift-codegen-shared v0.92.0
[INFO] [stderr]     Checking getrandom v0.2.8
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.14
[INFO] [stderr]    Compiling target-lexicon v0.12.6
[INFO] [stderr]    Compiling cranelift-codegen-meta v0.92.0
[INFO] [stderr]    Compiling parking_lot_core v0.9.7
[INFO] [stderr]     Checking fxhash v0.2.1
[INFO] [stderr]    Compiling num-bigint v0.4.3
[INFO] [stderr]     Checking cranelift-entity v0.92.0
[INFO] [stderr]    Compiling eyre v0.6.8
[INFO] [stderr]     Checking stable_deref_trait v1.2.0
[INFO] [stderr]     Checking slice-group-by v0.3.0
[INFO] [stderr]     Checking fallible-iterator v0.2.0
[INFO] [stderr]    Compiling crossbeam-queue v0.3.8
[INFO] [stderr]    Compiling backtrace v0.3.67
[INFO] [stderr]     Checking hashbrown v0.12.3
[INFO] [stderr]    Compiling aho-corasick v0.7.20
[INFO] [stderr]     Checking cranelift-bforest v0.92.0
[INFO] [stderr]     Checking regalloc2 v0.5.1
[INFO] [stderr]    Compiling num-iter v0.1.43
[INFO] [stderr]    Compiling num-rational v0.4.1
[INFO] [stderr]    Compiling quote v1.0.23
[INFO] [stderr]     Checking gimli v0.27.1
[INFO] [stderr]    Compiling indenter v0.3.3
[INFO] [stderr]     Checking bumpalo v3.12.0
[INFO] [stderr]     Checking arrayvec v0.7.2
[INFO] [stderr]     Checking object v0.30.3
[INFO] [stderr]     Checking indexmap v1.9.2
[INFO] [stderr]     Checking miniz_oxide v0.6.2
[INFO] [stderr]     Checking crossbeam-deque v0.8.3
[INFO] [stderr]     Checking crossbeam-channel v0.5.7
[INFO] [stderr]     Checking unicode-width v0.1.10
[INFO] [stderr]     Checking rustc-demangle v0.1.21
[INFO] [stderr]    Compiling heck v0.4.1
[INFO] [stderr]    Compiling regex v1.7.1
[INFO] [stderr]     Checking smawk v0.3.1
[INFO] [stderr]     Checking is_ci v1.1.1
[INFO] [stderr]     Checking gimli v0.26.2
[INFO] [stderr]     Checking num-complex v0.4.3
[INFO] [stderr]     Checking supports-color v1.3.1
[INFO] [stderr]     Checking dashmap v5.4.0
[INFO] [stderr]     Checking hashlink v0.8.1
[INFO] [stderr]     Checking parking_lot v0.12.1
[INFO] [stderr]     Checking crossbeam v0.8.2
[INFO] [stderr]     Checking supports-hyperlinks v1.2.0
[INFO] [stderr]     Checking supports-unicode v1.0.2
[INFO] [stderr]     Checking terminal_size v0.1.17
[INFO] [stderr]     Checking rustc-hash v1.1.0
[INFO] [stderr]     Checking owo-colors v3.5.0
[INFO] [stderr]     Checking arc-swap v1.6.0
[INFO] [stderr]     Checking ordered-float v3.6.0
[INFO] [stderr]    Compiling cranelift-codegen v0.92.0
[INFO] [stderr]    Compiling unicode-linebreak v0.1.4
[INFO] [stderr]     Checking num v0.4.0
[INFO] [stderr]     Checking addr2line v0.19.0
[INFO] [stderr]     Checking textwrap v0.15.2
[INFO] [stderr]    Compiling thiserror-impl v1.0.38
[INFO] [stderr]    Compiling miette-derive v5.5.0
[INFO] [stderr]    Compiling salsa-2022-macros v0.1.0 (https://github.com/salsa-rs/salsa.git#67d290dc)
[INFO] [stderr]    Compiling num-derive v0.3.3
[INFO] [stderr]     Checking thiserror v1.0.38
[INFO] [stderr]     Checking miette v5.5.0
[INFO] [stderr]     Checking salsa-2022 v0.1.0 (https://github.com/salsa-rs/salsa.git#67d290dc)
[INFO] [stderr]     Checking cranelift-frontend v0.92.0
[INFO] [stderr]     Checking cranelift v0.92.0
[INFO] [stderr]     Checking zebra v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]  Documenting zebra v0.1.0 (/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(let_chains)]
[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:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(let_chains)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::path::PathBuf`
[INFO] [stdout]  --> src/lib.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::path::PathBuf;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `types::Type`
[INFO] [stdout]  --> src/lib.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use types::Type;
[INFO] [stdout]   |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 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 `zebra`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/rustwide/rustup-home/toolchains/1.75.0-x86_64-unknown-linux-gnu/bin/rustdoc --edition=2021 --crate-type lib --crate-name zebra src/lib.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=b3310769434bee7b -L dependency=/opt/rustwide/target/debug/deps --extern cranelift=/opt/rustwide/target/debug/deps/libcranelift-a2ed8287996cf8a0.rmeta --extern cranelift_codegen=/opt/rustwide/target/debug/deps/libcranelift_codegen-e87ee952f6060eb8.rmeta --extern cranelift_frontend=/opt/rustwide/target/debug/deps/libcranelift_frontend-32a3bd5738e8b66d.rmeta --extern miette=/opt/rustwide/target/debug/deps/libmiette-ebe51735297104be.rmeta --extern num=/opt/rustwide/target/debug/deps/libnum-96e83d4517ac99d1.rmeta --extern num_derive=/opt/rustwide/target/debug/deps/libnum_derive-7f1c369fe1164115.so --extern num_traits=/opt/rustwide/target/debug/deps/libnum_traits-6a710994a3aa8095.rmeta --extern ordered_float=/opt/rustwide/target/debug/deps/libordered_float-3e8a819dd3f6bff6.rmeta --extern salsa=/opt/rustwide/target/debug/deps/libsalsa_2022-87a224a095af1dca.rmeta --extern thiserror=/opt/rustwide/target/debug/deps/libthiserror-c2d6b0100d8276e4.rmeta --cap-lints=warn --crate-version 0.1.0` (exit status: 1)
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error: aborting due to previous error; 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `zebra` (lib) due to 2 previous errors; 2 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "07089c4ff18d222ba5b91f981f106e29ed1d2d5cee64aaacd3e2f15774d1138b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "07089c4ff18d222ba5b91f981f106e29ed1d2d5cee64aaacd3e2f15774d1138b", kill_on_drop: false }`
[INFO] [stdout] 07089c4ff18d222ba5b91f981f106e29ed1d2d5cee64aaacd3e2f15774d1138b
