[INFO] cloning repository https://github.com/mwaitzman/meme_finder
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/mwaitzman/meme_finder" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmwaitzman%2Fmeme_finder", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmwaitzman%2Fmeme_finder'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 7af0dbc32049e0c5dfcb1b0e7cf0d6899f1abd3c
[INFO] documenting mwaitzman/meme_finder against 1.61.0 for beta-1.62-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmwaitzman%2Fmeme_finder" "/workspace/builds/worker-11/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-11/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/mwaitzman/meme_finder on toolchain 1.61.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.61.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/mwaitzman/meme_finder
[INFO] finished tweaking git repo https://github.com/mwaitzman/meme_finder
[INFO] tweaked toml for git repo https://github.com/mwaitzman/meme_finder written to /workspace/builds/worker-11/source/Cargo.toml
[INFO] crate git repo https://github.com/mwaitzman/meme_finder already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.61.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded signal-hook v0.3.14
[INFO] [stderr]   Downloaded ansi_colours v1.1.1
[INFO] [stderr]   Downloaded signal-hook-mio v0.2.3
[INFO] [stderr]   Downloaded seahash v4.1.0
[INFO] [stderr]   Downloaded crossterm v0.23.2
[INFO] [stderr]   Downloaded tesseract-plumbing v0.6.1
[INFO] [stderr]   Downloaded tesseract-sys v0.5.12
[INFO] [stderr]   Downloaded leptonica-plumbing v0.4.1
[INFO] [stderr]   Downloaded leptonica-sys v0.4.1
[INFO] [stderr]   Downloaded home-dir v0.1.0
[INFO] [stderr]   Downloaded viuer v0.6.1
[INFO] [stderr]   Downloaded dashmap v5.2.0
[INFO] [stderr]   Downloaded crossterm_winapi v0.9.0
[INFO] [stderr]   Downloaded cfb v0.6.1
[INFO] [stderr]   Downloaded leptess v0.13.2
[INFO] [stderr]   Downloaded infer v0.7.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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:d190cb871061d98bc6d0581d85cb2ecb09a0f8a142ba5463de30be9999fc3251" "/opt/rustwide/cargo-home/bin/cargo" "+1.61.0" "metadata" "--no-deps" "--format-version=1", 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] cf64dd7d9417b17c65b7616ef5772e159409be20cd963b1b3a1383ab148ffab2
[INFO] running `Command { std: "docker" "start" "-a" "cf64dd7d9417b17c65b7616ef5772e159409be20cd963b1b3a1383ab148ffab2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "cf64dd7d9417b17c65b7616ef5772e159409be20cd963b1b3a1383ab148ffab2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cf64dd7d9417b17c65b7616ef5772e159409be20cd963b1b3a1383ab148ffab2", kill_on_drop: false }`
[INFO] [stdout] cf64dd7d9417b17c65b7616ef5772e159409be20cd963b1b3a1383ab148ffab2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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:d190cb871061d98bc6d0581d85cb2ecb09a0f8a142ba5463de30be9999fc3251" "/opt/rustwide/cargo-home/bin/cargo" "+1.61.0" "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] 535bf66035b89c5b26a1d0b4a8b46a95003a28e1088553d7d67a27cd41767eac
[INFO] running `Command { std: "docker" "start" "-a" "535bf66035b89c5b26a1d0b4a8b46a95003a28e1088553d7d67a27cd41767eac", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.122
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]    Compiling regex-syntax v0.6.25
[INFO] [stderr]    Compiling termcolor v1.1.3
[INFO] [stderr]    Compiling lazy_static v1.4.0
[INFO] [stderr]    Compiling signal-hook v0.3.14
[INFO] [stderr]     Checking byteorder v1.4.3
[INFO] [stderr]    Compiling crossbeam-queue v0.3.5
[INFO] [stderr]     Checking fastrand v1.7.0
[INFO] [stderr]     Checking uuid v0.8.2
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]     Checking once_cell v1.12.0
[INFO] [stderr]     Checking seahash v4.1.0
[INFO] [stderr]    Compiling num-traits v0.2.15
[INFO] [stderr]    Compiling num-integer v0.1.45
[INFO] [stderr]    Compiling num-rational v0.4.0
[INFO] [stderr]    Compiling num-iter v0.1.43
[INFO] [stderr]    Compiling nom v5.1.2
[INFO] [stderr]    Compiling clang-sys v1.3.1
[INFO] [stderr]    Compiling textwrap v0.11.0
[INFO] [stderr]    Compiling libloading v0.7.3
[INFO] [stderr]     Checking miniz_oxide v0.5.1
[INFO] [stderr]     Checking rgb v0.8.32
[INFO] [stderr]    Compiling proc-macro2 v1.0.37
[INFO] [stderr]     Checking crossbeam-utils v0.8.8
[INFO] [stderr]    Compiling log v0.4.16
[INFO] [stderr]     Checking crc32fast v1.3.2
[INFO] [stderr]     Checking cfb v0.6.1
[INFO] [stderr]     Checking spin v0.9.3
[INFO] [stderr]     Checking ansi_colours v1.1.1
[INFO] [stderr]    Compiling bindgen v0.56.0
[INFO] [stderr]     Checking crossbeam-epoch v0.9.8
[INFO] [stderr]     Checking crossbeam-channel v0.5.4
[INFO] [stderr]     Checking png v0.17.5
[INFO] [stderr]    Compiling quote v1.0.17
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling which v3.1.1
[INFO] [stderr]     Checking infer v0.7.0
[INFO] [stderr]    Compiling syn v1.0.91
[INFO] [stderr]     Checking crossbeam-deque v0.8.1
[INFO] [stderr]    Compiling clap v2.34.0
[INFO] [stderr]     Checking crossbeam v0.8.1
[INFO] [stderr]    Compiling regex v1.5.5
[INFO] [stderr]     Checking num_cpus v1.13.1
[INFO] [stderr]     Checking getrandom v0.2.6
[INFO] [stderr]     Checking signal-hook-registry v1.4.0
[INFO] [stderr]     Checking parking_lot_core v0.9.2
[INFO] [stderr]     Checking flate2 v1.0.23
[INFO] [stderr]     Checking mio v0.8.3
[INFO] [stderr]     Checking terminal_size v0.1.17
[INFO] [stderr]     Checking nix v0.18.0
[INFO] [stderr]     Checking tempfile v3.3.0
[INFO] [stderr]     Checking dirs-sys v0.3.7
[INFO] [stderr]     Checking nanorand v0.7.0
[INFO] [stderr]     Checking rayon-core v1.9.1
[INFO] [stderr]     Checking threadpool v1.8.1
[INFO] [stderr]     Checking parking_lot v0.12.0
[INFO] [stderr]     Checking clap v3.1.8
[INFO] [stderr]     Checking colored v2.0.0
[INFO] [stderr]     Checking console v0.15.0
[INFO] [stderr]     Checking dirs v4.0.0
[INFO] [stderr]    Compiling cexpr v0.4.0
[INFO] [stderr]     Checking signal-hook-mio v0.2.3
[INFO] [stderr]     Checking crossterm v0.23.2
[INFO] [stderr]     Checking rayon v1.5.1
[INFO] [stderr]    Compiling env_logger v0.8.4
[INFO] [stderr]     Checking jpeg-decoder v0.2.6
[INFO] [stderr]    Compiling thiserror-impl v1.0.30
[INFO] [stderr]    Compiling pin-project-internal v1.0.10
[INFO] [stderr]    Compiling serde_derive v1.0.136
[INFO] [stderr]     Checking tiff v0.7.2
[INFO] [stderr]     Checking pin-project v1.0.10
[INFO] [stderr]     Checking flume v0.10.12
[INFO] [stderr]     Checking thiserror v1.0.30
[INFO] [stderr]     Checking home-dir v0.1.0
[INFO] [stderr]     Checking exr v1.4.2
[INFO] [stderr]    Compiling leptonica-sys v0.4.1
[INFO] [stderr]    Compiling tesseract-sys v0.5.12
[INFO] [stderr]     Checking serde v1.0.136
[INFO] [stderr]     Checking image v0.24.2
[INFO] [stderr]     Checking dashmap v5.2.0
[INFO] [stderr]     Checking ron v0.7.0
[INFO] [stderr]     Checking viuer v0.6.1
[INFO] [stderr]     Checking leptonica-plumbing v0.4.1
[INFO] [stderr]     Checking tesseract-plumbing v0.6.1
[INFO] [stderr]     Checking leptess v0.13.2
[INFO] [stderr]  Documenting meme_finder v0.2.1 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/main.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(let_chains, default_free_fn)]
[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 `meme_finder`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2021 --crate-type bin --crate-name meme_finder src/main.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=068e9ba6a7772ace -L dependency=/opt/rustwide/target/debug/deps --extern clap=/opt/rustwide/target/debug/deps/libclap-9111bba3bc13f176.rmeta --extern colored=/opt/rustwide/target/debug/deps/libcolored-96c9d073d808d80a.rmeta --extern crossbeam=/opt/rustwide/target/debug/deps/libcrossbeam-15c0541904192f19.rmeta --extern dashmap=/opt/rustwide/target/debug/deps/libdashmap-6475d2a0b89bc15b.rmeta --extern dirs=/opt/rustwide/target/debug/deps/libdirs-9d1179b483fb9de5.rmeta --extern home_dir=/opt/rustwide/target/debug/deps/libhome_dir-dc7a70730bbc368f.rmeta --extern infer=/opt/rustwide/target/debug/deps/libinfer-8d3abf4481ca7e6f.rmeta --extern leptess=/opt/rustwide/target/debug/deps/libleptess-cfc30d01032192cc.rmeta --extern rayon=/opt/rustwide/target/debug/deps/librayon-3334c4c19fe8e215.rmeta --extern ron=/opt/rustwide/target/debug/deps/libron-2d303438c27cecfd.rmeta --extern seahash=/opt/rustwide/target/debug/deps/libseahash-9ed07d29e0dc0b96.rmeta --extern serde=/opt/rustwide/target/debug/deps/libserde-4ea6ed2e995b8ef1.rmeta --extern viuer=/opt/rustwide/target/debug/deps/libviuer-b220e73cf4129261.rmeta --extern walkdir=/opt/rustwide/target/debug/deps/libwalkdir-aa60abb9fe6cfa5b.rmeta --cap-lints=warn --crate-version 0.2.1` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "535bf66035b89c5b26a1d0b4a8b46a95003a28e1088553d7d67a27cd41767eac", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "535bf66035b89c5b26a1d0b4a8b46a95003a28e1088553d7d67a27cd41767eac", kill_on_drop: false }`
[INFO] [stdout] 535bf66035b89c5b26a1d0b4a8b46a95003a28e1088553d7d67a27cd41767eac