[INFO] cloning repository https://github.com/GiveMe-A-Name/x-diff
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/GiveMe-A-Name/x-diff" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FGiveMe-A-Name%2Fx-diff", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FGiveMe-A-Name%2Fx-diff'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 7085031e90e2a722585d0f80a0f0cc220003ad48
[INFO] documenting GiveMe-A-Name/x-diff 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%2FGiveMe-A-Name%2Fx-diff" "/workspace/builds/worker-1-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/GiveMe-A-Name/x-diff 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/GiveMe-A-Name/x-diff
[INFO] finished tweaking git repo https://github.com/GiveMe-A-Name/x-diff
[INFO] tweaked toml for git repo https://github.com/GiveMe-A-Name/x-diff written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/GiveMe-A-Name/x-diff 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]  Downloading crates ...
[INFO] [stderr]   Downloaded clap_derive v4.0.1
[INFO] [stderr]   Downloaded clap v4.0.4
[INFO] [stderr]   Downloaded webpki-roots v0.22.5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] bf186db70409e8fce3a3e142686198b51447a64d396d6c9f9e01871a8e890497
[INFO] running `Command { std: "docker" "start" "-a" "bf186db70409e8fce3a3e142686198b51447a64d396d6c9f9e01871a8e890497", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "bf186db70409e8fce3a3e142686198b51447a64d396d6c9f9e01871a8e890497", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bf186db70409e8fce3a3e142686198b51447a64d396d6c9f9e01871a8e890497", kill_on_drop: false }`
[INFO] [stdout] bf186db70409e8fce3a3e142686198b51447a64d396d6c9f9e01871a8e890497
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] 3c536353f83ca33a934653297a4c7e20a90f7247882ac33dc80f653a6a69073e
[INFO] running `Command { std: "docker" "start" "-a" "3c536353f83ca33a934653297a4c7e20a90f7247882ac33dc80f653a6a69073e", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.134
[INFO] [stderr]    Compiling proc-macro2 v1.0.46
[INFO] [stderr]    Compiling unicode-ident v1.0.4
[INFO] [stderr]    Compiling quote v1.0.21
[INFO] [stderr]    Compiling syn v1.0.101
[INFO] [stderr]     Checking once_cell v1.15.0
[INFO] [stderr]    Compiling cc v1.0.73
[INFO] [stderr]     Checking itoa v1.0.3
[INFO] [stderr]    Compiling log v0.4.17
[INFO] [stderr]    Compiling serde_derive v1.0.145
[INFO] [stderr]    Compiling serde v1.0.145
[INFO] [stderr]    Compiling lock_api v0.4.9
[INFO] [stderr]    Compiling parking_lot_core v0.9.3
[INFO] [stderr]     Checking pin-project-lite v0.2.9
[INFO] [stderr]     Checking bytes v1.2.1
[INFO] [stderr]    Compiling memchr v2.5.0
[INFO] [stderr]     Checking smallvec v1.9.0
[INFO] [stderr]    Compiling futures-core v0.3.24
[INFO] [stderr]     Checking scopeguard v1.1.0
[INFO] [stderr]    Compiling tokio v1.21.2
[INFO] [stderr]     Checking untrusted v0.7.1
[INFO] [stderr]     Checking hashbrown v0.12.3
[INFO] [stderr]     Checking fnv v1.0.7
[INFO] [stderr]     Checking spin v0.5.2
[INFO] [stderr]     Checking socket2 v0.4.7
[INFO] [stderr]     Checking mio v0.8.4
[INFO] [stderr]     Checking parking_lot v0.12.1
[INFO] [stderr]     Checking signal-hook-registry v1.4.0
[INFO] [stderr]     Checking num_cpus v1.13.1
[INFO] [stderr]    Compiling futures-task v0.3.24
[INFO] [stderr]     Checking http v0.2.8
[INFO] [stderr]     Checking tracing-core v0.1.29
[INFO] [stderr]    Compiling ring v0.16.20
[INFO] [stderr]    Compiling slab v0.4.7
[INFO] [stderr]     Checking indexmap v1.9.1
[INFO] [stderr]    Compiling futures-util v0.3.24
[INFO] [stderr]     Checking tracing v0.1.36
[INFO] [stderr]     Checking tinyvec_macros v0.1.0
[INFO] [stderr]     Checking ryu v1.0.11
[INFO] [stderr]     Checking pin-utils v0.1.0
[INFO] [stderr]    Compiling futures-channel v0.3.24
[INFO] [stderr]    Compiling httparse v1.8.0
[INFO] [stderr]    Compiling rustls v0.20.6
[INFO] [stderr]    Compiling pkg-config v0.3.25
[INFO] [stderr]     Checking futures-sink v0.3.24
[INFO] [stderr]     Checking tinyvec v1.6.0
[INFO] [stderr]     Checking try-lock v0.2.3
[INFO] [stderr]     Checking base64 v0.13.0
[INFO] [stderr]    Compiling crc32fast v1.3.2
[INFO] [stderr]     Checking percent-encoding v2.2.0
[INFO] [stderr]     Checking form_urlencoded v1.1.0
[INFO] [stderr]     Checking want v0.3.0
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling onig_sys v69.8.1
[INFO] [stderr]     Checking http-body v0.4.5
[INFO] [stderr]     Checking safemem v0.3.3
[INFO] [stderr]     Checking adler v1.0.2
[INFO] [stderr]     Checking unicode-bidi v0.3.8
[INFO] [stderr]     Checking num_threads v0.1.6
[INFO] [stderr]    Compiling encoding_rs v0.8.31
[INFO] [stderr]     Checking unicode-normalization v0.1.22
[INFO] [stderr]    Compiling thiserror v1.0.37
[INFO] [stderr]     Checking tower-service v0.3.2
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]    Compiling serde_json v1.0.85
[INFO] [stderr]     Checking time v0.3.15
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]     Checking miniz_oxide v0.5.4
[INFO] [stderr]     Checking line-wrap v0.1.1
[INFO] [stderr]     Checking idna v0.3.0
[INFO] [stderr]     Checking terminal_size v0.1.17
[INFO] [stderr]    Compiling anyhow v1.0.65
[INFO] [stderr]     Checking unicode-width v0.1.10
[INFO] [stderr]     Checking xml-rs v0.8.4
[INFO] [stderr]     Checking linked-hash-map v0.5.6
[INFO] [stderr]     Checking os_str_bytes v6.3.0
[INFO] [stderr]     Checking remove_dir_all v0.5.3
[INFO] [stderr]     Checking fastrand v1.8.0
[INFO] [stderr]     Checking tempfile v3.3.0
[INFO] [stderr]     Checking clap_lex v0.3.0
[INFO] [stderr]     Checking yaml-rust v0.4.5
[INFO] [stderr]     Checking flate2 v1.0.24
[INFO] [stderr]     Checking console v0.15.2
[INFO] [stderr]     Checking walkdir v2.3.2
[INFO] [stderr]     Checking rustls-pemfile v1.0.1
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking ipnet v2.5.0
[INFO] [stderr]     Checking unsafe-libyaml v0.2.4
[INFO] [stderr]     Checking zeroize v1.5.7
[INFO] [stderr]     Checking regex-syntax v0.6.27
[INFO] [stderr]     Checking mime v0.3.16
[INFO] [stderr]     Checking dialoguer v0.10.2
[INFO] [stderr]     Checking similar v2.2.0
[INFO] [stderr]     Checking webpki v0.22.0
[INFO] [stderr]     Checking sct v0.7.0
[INFO] [stderr]     Checking webpki-roots v0.22.5
[INFO] [stderr]    Compiling tokio-macros v1.8.0
[INFO] [stderr]    Compiling thiserror-impl v1.0.37
[INFO] [stderr]    Compiling clap_derive v4.0.1
[INFO] [stderr]     Checking clap v4.0.4
[INFO] [stderr]     Checking onig v6.4.0
[INFO] [stderr]     Checking tokio-util v0.7.4
[INFO] [stderr]     Checking tokio-rustls v0.23.4
[INFO] [stderr]     Checking h2 v0.3.14
[INFO] [stderr]     Checking bincode v1.3.3
[INFO] [stderr]     Checking plist v1.3.1
[INFO] [stderr]     Checking serde_urlencoded v0.7.1
[INFO] [stderr]     Checking url v2.3.1
[INFO] [stderr]     Checking http-serde v1.1.2
[INFO] [stderr]     Checking serde_yaml v0.9.13
[INFO] [stderr]     Checking syntect v5.0.0
[INFO] [stderr]     Checking hyper v0.14.20
[INFO] [stderr]     Checking hyper-rustls v0.23.0
[INFO] [stderr]     Checking reqwest v0.11.12
[INFO] [stderr]  Documenting x-diff 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:3:12
[INFO] [stdout]   |
[INFO] [stdout] 3 | #![feature(iterator_try_collect)]
[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 `x-diff`
[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 x_diff src/lib.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=3a30807a7ec843cc -L dependency=/opt/rustwide/target/debug/deps --extern anyhow=/opt/rustwide/target/debug/deps/libanyhow-86b35dd314969008.rmeta --extern clap=/opt/rustwide/target/debug/deps/libclap-662e8e0fe488abff.rmeta --extern console=/opt/rustwide/target/debug/deps/libconsole-c968a96e1dc75743.rmeta --extern dialoguer=/opt/rustwide/target/debug/deps/libdialoguer-3c6869047b716b9e.rmeta --extern http_serde=/opt/rustwide/target/debug/deps/libhttp_serde-2228962ffa494bbb.rmeta --extern reqwest=/opt/rustwide/target/debug/deps/libreqwest-557373da40dd4291.rmeta --extern serde=/opt/rustwide/target/debug/deps/libserde-bb8bc56cf5ed6e3b.rmeta --extern serde_json=/opt/rustwide/target/debug/deps/libserde_json-d71f708778ef7aff.rmeta --extern serde_yaml=/opt/rustwide/target/debug/deps/libserde_yaml-f45a65a69a7007e2.rmeta --extern similar=/opt/rustwide/target/debug/deps/libsimilar-5ad623582a184216.rmeta --extern syntect=/opt/rustwide/target/debug/deps/libsyntect-325745314d27cf5c.rmeta --extern tokio=/opt/rustwide/target/debug/deps/libtokio-66bf29b0d215d16e.rmeta --extern url=/opt/rustwide/target/debug/deps/liburl-dea9bcb86d13d23c.rmeta --cap-lints=warn --crate-version 0.1.0` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "3c536353f83ca33a934653297a4c7e20a90f7247882ac33dc80f653a6a69073e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3c536353f83ca33a934653297a4c7e20a90f7247882ac33dc80f653a6a69073e", kill_on_drop: false }`
[INFO] [stdout] 3c536353f83ca33a934653297a4c7e20a90f7247882ac33dc80f653a6a69073e
[INFO] documenting GiveMe-A-Name/x-diff against beta-2023-12-22 for beta-1.76-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FGiveMe-A-Name%2Fx-diff" "/workspace/builds/worker-1-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/GiveMe-A-Name/x-diff on toolchain beta-2023-12-22
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2023-12-22" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/GiveMe-A-Name/x-diff
[INFO] finished tweaking git repo https://github.com/GiveMe-A-Name/x-diff
[INFO] tweaked toml for git repo https://github.com/GiveMe-A-Name/x-diff written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/GiveMe-A-Name/x-diff 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" "+beta-2023-12-22" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/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" "+beta-2023-12-22" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] aae43c77434dd22c3d1649885c67c04a02c818e38aaf71092993906c9d2dd01b
[INFO] running `Command { std: "docker" "start" "-a" "aae43c77434dd22c3d1649885c67c04a02c818e38aaf71092993906c9d2dd01b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "aae43c77434dd22c3d1649885c67c04a02c818e38aaf71092993906c9d2dd01b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "aae43c77434dd22c3d1649885c67c04a02c818e38aaf71092993906c9d2dd01b", kill_on_drop: false }`
[INFO] [stdout] aae43c77434dd22c3d1649885c67c04a02c818e38aaf71092993906c9d2dd01b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/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" "+beta-2023-12-22" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4fd1fd0efac2aad7e1e258351e5969cfa57ba18159ab3ed55ef4487ab24acac2
[INFO] running `Command { std: "docker" "start" "-a" "4fd1fd0efac2aad7e1e258351e5969cfa57ba18159ab3ed55ef4487ab24acac2", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.134
[INFO] [stderr]    Compiling proc-macro2 v1.0.46
[INFO] [stderr]    Compiling unicode-ident v1.0.4
[INFO] [stderr]    Compiling quote v1.0.21
[INFO] [stderr]    Compiling syn v1.0.101
[INFO] [stderr]    Compiling cc v1.0.73
[INFO] [stderr]     Checking once_cell v1.15.0
[INFO] [stderr]     Checking itoa v1.0.3
[INFO] [stderr]    Compiling serde_derive v1.0.145
[INFO] [stderr]    Compiling log v0.4.17
[INFO] [stderr]    Compiling serde v1.0.145
[INFO] [stderr]    Compiling lock_api v0.4.9
[INFO] [stderr]    Compiling parking_lot_core v0.9.3
[INFO] [stderr]     Checking bytes v1.2.1
[INFO] [stderr]     Checking pin-project-lite v0.2.9
[INFO] [stderr]    Compiling memchr v2.5.0
[INFO] [stderr]     Checking smallvec v1.9.0
[INFO] [stderr]     Checking scopeguard v1.1.0
[INFO] [stderr]    Compiling futures-core v0.3.24
[INFO] [stderr]    Compiling tokio v1.21.2
[INFO] [stderr]     Checking spin v0.5.2
[INFO] [stderr]    Compiling ring v0.16.20
[INFO] [stderr]     Checking fnv v1.0.7
[INFO] [stderr]     Checking hashbrown v0.12.3
[INFO] [stderr]     Checking untrusted v0.7.1
[INFO] [stderr]     Checking mio v0.8.4
[INFO] [stderr]     Checking num_cpus v1.13.1
[INFO] [stderr]     Checking socket2 v0.4.7
[INFO] [stderr]     Checking parking_lot v0.12.1
[INFO] [stderr]     Checking signal-hook-registry v1.4.0
[INFO] [stderr]    Compiling futures-task v0.3.24
[INFO] [stderr]     Checking http v0.2.8
[INFO] [stderr]     Checking tracing-core v0.1.29
[INFO] [stderr]    Compiling slab v0.4.7
[INFO] [stderr]    Compiling futures-util v0.3.24
[INFO] [stderr]     Checking tracing v0.1.36
[INFO] [stderr]     Checking indexmap v1.9.1
[INFO] [stderr]    Compiling httparse v1.8.0
[INFO] [stderr]     Checking ryu v1.0.11
[INFO] [stderr]     Checking tinyvec_macros v0.1.0
[INFO] [stderr]     Checking futures-sink v0.3.24
[INFO] [stderr]    Compiling futures-channel v0.3.24
[INFO] [stderr]    Compiling rustls v0.20.6
[INFO] [stderr]     Checking pin-utils v0.1.0
[INFO] [stderr]    Compiling pkg-config v0.3.25
[INFO] [stderr]     Checking tinyvec v1.6.0
[INFO] [stderr]     Checking percent-encoding v2.2.0
[INFO] [stderr]     Checking base64 v0.13.0
[INFO] [stderr]    Compiling crc32fast v1.3.2
[INFO] [stderr]     Checking try-lock v0.2.3
[INFO] [stderr]     Checking want v0.3.0
[INFO] [stderr]     Checking form_urlencoded v1.1.0
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling onig_sys v69.8.1
[INFO] [stderr]     Checking http-body v0.4.5
[INFO] [stderr]     Checking unicode-normalization v0.1.22
[INFO] [stderr]     Checking safemem v0.3.3
[INFO] [stderr]    Compiling encoding_rs v0.8.31
[INFO] [stderr]     Checking tower-service v0.3.2
[INFO] [stderr]    Compiling serde_json v1.0.85
[INFO] [stderr]    Compiling thiserror v1.0.37
[INFO] [stderr]     Checking adler v1.0.2
[INFO] [stderr]     Checking num_threads v0.1.6
[INFO] [stderr]     Checking unicode-bidi v0.3.8
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]     Checking time v0.3.15
[INFO] [stderr]     Checking miniz_oxide v0.5.4
[INFO] [stderr]     Checking line-wrap v0.1.1
[INFO] [stderr]     Checking terminal_size v0.1.17
[INFO] [stderr]     Checking idna v0.3.0
[INFO] [stderr]     Checking remove_dir_all v0.5.3
[INFO] [stderr]     Checking unicode-width v0.1.10
[INFO] [stderr]     Checking os_str_bytes v6.3.0
[INFO] [stderr]     Checking linked-hash-map v0.5.6
[INFO] [stderr]     Checking xml-rs v0.8.4
[INFO] [stderr]     Checking fastrand v1.8.0
[INFO] [stderr]    Compiling anyhow v1.0.65
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]     Checking tempfile v3.3.0
[INFO] [stderr]     Checking yaml-rust v0.4.5
[INFO] [stderr]     Checking flate2 v1.0.24
[INFO] [stderr]     Checking clap_lex v0.3.0
[INFO] [stderr]     Checking walkdir v2.3.2
[INFO] [stderr]     Checking console v0.15.2
[INFO] [stderr]     Checking rustls-pemfile v1.0.1
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking zeroize v1.5.7
[INFO] [stderr]     Checking ipnet v2.5.0
[INFO] [stderr]     Checking unsafe-libyaml v0.2.4
[INFO] [stderr]     Checking mime v0.3.16
[INFO] [stderr]     Checking regex-syntax v0.6.27
[INFO] [stderr]     Checking dialoguer v0.10.2
[INFO] [stderr]     Checking similar v2.2.0
[INFO] [stderr]     Checking webpki v0.22.0
[INFO] [stderr]     Checking sct v0.7.0
[INFO] [stderr]     Checking webpki-roots v0.22.5
[INFO] [stderr]    Compiling tokio-macros v1.8.0
[INFO] [stderr]    Compiling thiserror-impl v1.0.37
[INFO] [stderr]    Compiling clap_derive v4.0.1
[INFO] [stderr]     Checking onig v6.4.0
[INFO] [stderr]     Checking clap v4.0.4
[INFO] [stderr]     Checking tokio-util v0.7.4
[INFO] [stderr]     Checking tokio-rustls v0.23.4
[INFO] [stderr]     Checking h2 v0.3.14
[INFO] [stderr]     Checking plist v1.3.1
[INFO] [stderr]     Checking serde_urlencoded v0.7.1
[INFO] [stderr]     Checking url v2.3.1
[INFO] [stderr]     Checking bincode v1.3.3
[INFO] [stderr]     Checking http-serde v1.1.2
[INFO] [stderr]     Checking serde_yaml v0.9.13
[INFO] [stderr]     Checking syntect v5.0.0
[INFO] [stderr]     Checking hyper v0.14.20
[INFO] [stderr]     Checking hyper-rustls v0.23.0
[INFO] [stderr]     Checking reqwest v0.11.12
[INFO] [stderr]  Documenting x-diff v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/lib.rs:3:12
[INFO] [stdout]   |
[INFO] [stdout] 3 | #![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 `x-diff`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/rustwide/rustup-home/toolchains/beta-2023-12-22-x86_64-unknown-linux-gnu/bin/rustdoc --edition=2021 --crate-type lib --crate-name x_diff src/lib.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=e9b8f1d085487a7c -L dependency=/opt/rustwide/target/debug/deps --extern anyhow=/opt/rustwide/target/debug/deps/libanyhow-9ecaf4b7a0b995cb.rmeta --extern clap=/opt/rustwide/target/debug/deps/libclap-c6abf4021cfdb1b0.rmeta --extern console=/opt/rustwide/target/debug/deps/libconsole-9871190d849f13cd.rmeta --extern dialoguer=/opt/rustwide/target/debug/deps/libdialoguer-8ce11b116f034390.rmeta --extern http_serde=/opt/rustwide/target/debug/deps/libhttp_serde-170e48dbc481971f.rmeta --extern reqwest=/opt/rustwide/target/debug/deps/libreqwest-0aef76150bee5db7.rmeta --extern serde=/opt/rustwide/target/debug/deps/libserde-994e3e2bbadca73d.rmeta --extern serde_json=/opt/rustwide/target/debug/deps/libserde_json-82e0505a862eb7a8.rmeta --extern serde_yaml=/opt/rustwide/target/debug/deps/libserde_yaml-6760ca5025ed2e1e.rmeta --extern similar=/opt/rustwide/target/debug/deps/libsimilar-1c4644016821a6a7.rmeta --extern syntect=/opt/rustwide/target/debug/deps/libsyntect-82078ac421031839.rmeta --extern tokio=/opt/rustwide/target/debug/deps/libtokio-c6ca036133435a08.rmeta --extern url=/opt/rustwide/target/debug/deps/liburl-4f52f3116a4845b4.rmeta --cap-lints=warn --crate-version 0.1.0` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "4fd1fd0efac2aad7e1e258351e5969cfa57ba18159ab3ed55ef4487ab24acac2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4fd1fd0efac2aad7e1e258351e5969cfa57ba18159ab3ed55ef4487ab24acac2", kill_on_drop: false }`
[INFO] [stdout] 4fd1fd0efac2aad7e1e258351e5969cfa57ba18159ab3ed55ef4487ab24acac2
