[INFO] cloning repository https://github.com/ambyshframber/ublog
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ambyshframber/ublog" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fambyshframber%2Fublog", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fambyshframber%2Fublog'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] d84b98636d665eaee54839bea779c9bf75159f86
[INFO] documenting ambyshframber/ublog 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%2Fambyshframber%2Fublog" "/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/ambyshframber/ublog 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] removed /workspace/builds/worker-3-tc1/source/rust-toolchain
[INFO] started tweaking git repo https://github.com/ambyshframber/ublog
[INFO] finished tweaking git repo https://github.com/ambyshframber/ublog
[INFO] tweaked toml for git repo https://github.com/ambyshframber/ublog written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/ambyshframber/ublog 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 crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded expanduser v1.2.2
[INFO] [stderr]   Downloaded edit v0.1.4
[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" "+1.75.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f86f4d53088fc06b344a47f80d02108f3cbc677062043ac6a3338836c5a578d4
[INFO] running `Command { std: "docker" "start" "-a" "f86f4d53088fc06b344a47f80d02108f3cbc677062043ac6a3338836c5a578d4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f86f4d53088fc06b344a47f80d02108f3cbc677062043ac6a3338836c5a578d4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f86f4d53088fc06b344a47f80d02108f3cbc677062043ac6a3338836c5a578d4", kill_on_drop: false }`
[INFO] [stdout] f86f4d53088fc06b344a47f80d02108f3cbc677062043ac6a3338836c5a578d4
[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" "+1.75.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 985cebf1309184a2f8e3a9618cd8f9e886c905f5a209e9a1769e6d61fe16e0f6
[INFO] running `Command { std: "docker" "start" "-a" "985cebf1309184a2f8e3a9618cd8f9e886c905f5a209e9a1769e6d61fe16e0f6", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.137
[INFO] [stderr]    Compiling syn v1.0.103
[INFO] [stderr]    Compiling serde v1.0.147
[INFO] [stderr]    Compiling num-traits v0.2.15
[INFO] [stderr]    Compiling num-integer v0.1.45
[INFO] [stderr]     Checking iana-time-zone v0.1.53
[INFO] [stderr]     Checking dirs v1.0.5
[INFO] [stderr]     Checking tempfile v3.3.0
[INFO] [stderr]     Checking time v0.1.44
[INFO] [stderr]     Checking which v4.3.0
[INFO] [stderr]     Checking edit v0.1.4
[INFO] [stderr]     Checking chrono v0.4.23
[INFO] [stderr]    Compiling thiserror-impl v1.0.37
[INFO] [stderr]     Checking toml v0.5.9
[INFO] [stderr]     Checking thiserror v1.0.37
[INFO] [stderr]     Checking pwd v1.4.0
[INFO] [stderr]     Checking expanduser v1.2.2
[INFO] [stderr]  Documenting ublog 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(result_flattening)]
[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 `ublog`
[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 bin --crate-name ublog 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=61f8d72e8f1168ac -L dependency=/opt/rustwide/target/debug/deps --extern chrono=/opt/rustwide/target/debug/deps/libchrono-b9ce33b0f6997fb0.rmeta --extern edit=/opt/rustwide/target/debug/deps/libedit-1400e5077542c48a.rmeta --extern expanduser=/opt/rustwide/target/debug/deps/libexpanduser-0e1ea3b20727262d.rmeta --extern lazy_static=/opt/rustwide/target/debug/deps/liblazy_static-e7445b4e8703c20b.rmeta --extern thiserror=/opt/rustwide/target/debug/deps/libthiserror-384838487bd82244.rmeta --extern toml=/opt/rustwide/target/debug/deps/libtoml-4a1d74c38b8094ea.rmeta --cap-lints=warn --crate-version 0.1.0` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "985cebf1309184a2f8e3a9618cd8f9e886c905f5a209e9a1769e6d61fe16e0f6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "985cebf1309184a2f8e3a9618cd8f9e886c905f5a209e9a1769e6d61fe16e0f6", kill_on_drop: false }`
[INFO] [stdout] 985cebf1309184a2f8e3a9618cd8f9e886c905f5a209e9a1769e6d61fe16e0f6
[INFO] documenting ambyshframber/ublog 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%2Fambyshframber%2Fublog" "/workspace/builds/worker-3-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/ambyshframber/ublog 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] removed /workspace/builds/worker-3-tc2/source/rust-toolchain
[INFO] started tweaking git repo https://github.com/ambyshframber/ublog
[INFO] finished tweaking git repo https://github.com/ambyshframber/ublog
[INFO] tweaked toml for git repo https://github.com/ambyshframber/ublog written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/ambyshframber/ublog 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-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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] 7ff51a85dae676cc19652516cac64f6fb92eeb2449014d9969ed5a3cdd7b8636
[INFO] running `Command { std: "docker" "start" "-a" "7ff51a85dae676cc19652516cac64f6fb92eeb2449014d9969ed5a3cdd7b8636", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7ff51a85dae676cc19652516cac64f6fb92eeb2449014d9969ed5a3cdd7b8636", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7ff51a85dae676cc19652516cac64f6fb92eeb2449014d9969ed5a3cdd7b8636", kill_on_drop: false }`
[INFO] [stdout] 7ff51a85dae676cc19652516cac64f6fb92eeb2449014d9969ed5a3cdd7b8636
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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] c36b6d7eb421d586ab1674376959502024e8e742e23d8f71150589926fb8141f
[INFO] running `Command { std: "docker" "start" "-a" "c36b6d7eb421d586ab1674376959502024e8e742e23d8f71150589926fb8141f", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.137
[INFO] [stderr]    Compiling syn v1.0.103
[INFO] [stderr]    Compiling serde v1.0.147
[INFO] [stderr]    Compiling num-traits v0.2.15
[INFO] [stderr]    Compiling num-integer v0.1.45
[INFO] [stderr]     Checking iana-time-zone v0.1.53
[INFO] [stderr]     Checking time v0.1.44
[INFO] [stderr]     Checking tempfile v3.3.0
[INFO] [stderr]     Checking which v4.3.0
[INFO] [stderr]     Checking dirs v1.0.5
[INFO] [stderr]     Checking edit v0.1.4
[INFO] [stderr]     Checking chrono v0.4.23
[INFO] [stderr]    Compiling thiserror-impl v1.0.37
[INFO] [stderr]     Checking toml v0.5.9
[INFO] [stderr]     Checking thiserror v1.0.37
[INFO] [stderr]     Checking pwd v1.4.0
[INFO] [stderr]     Checking expanduser v1.2.2
[INFO] [stderr]  Documenting ublog v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/main.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(result_flattening)]
[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 `ublog`
[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 bin --crate-name ublog 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=4a8147fabbc045a1 -L dependency=/opt/rustwide/target/debug/deps --extern chrono=/opt/rustwide/target/debug/deps/libchrono-86a4e34004e15e96.rmeta --extern edit=/opt/rustwide/target/debug/deps/libedit-a2dea32b36b50167.rmeta --extern expanduser=/opt/rustwide/target/debug/deps/libexpanduser-62aaf90b24171334.rmeta --extern lazy_static=/opt/rustwide/target/debug/deps/liblazy_static-cc91e7c9c894213a.rmeta --extern thiserror=/opt/rustwide/target/debug/deps/libthiserror-d273713dcec4663f.rmeta --extern toml=/opt/rustwide/target/debug/deps/libtoml-9ab9db3b7e4e2d5e.rmeta --cap-lints=warn --crate-version 0.1.0` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "c36b6d7eb421d586ab1674376959502024e8e742e23d8f71150589926fb8141f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c36b6d7eb421d586ab1674376959502024e8e742e23d8f71150589926fb8141f", kill_on_drop: false }`
[INFO] [stdout] c36b6d7eb421d586ab1674376959502024e8e742e23d8f71150589926fb8141f
