[INFO] cloning repository https://github.com/Nemo157/cargo-doc-tree
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Nemo157/cargo-doc-tree" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FNemo157%2Fcargo-doc-tree", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FNemo157%2Fcargo-doc-tree'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] b7ede716125644a29d81e725961815e5d0a3e4e4
[INFO] documenting Nemo157/cargo-doc-tree 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%2FNemo157%2Fcargo-doc-tree" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Nemo157/cargo-doc-tree 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/Nemo157/cargo-doc-tree
[INFO] finished tweaking git repo https://github.com/Nemo157/cargo-doc-tree
[INFO] tweaked toml for git repo https://github.com/Nemo157/cargo-doc-tree written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/Nemo157/cargo-doc-tree 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 fn-error-context v0.2.0
[INFO] [stderr]   Downloaded rustdoc-types v0.11.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] f039994789d45b1ae356bc04f42ec28106819453b7bf26744bd99e4e57cd31b6
[INFO] running `Command { std: "docker" "start" "-a" "f039994789d45b1ae356bc04f42ec28106819453b7bf26744bd99e4e57cd31b6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f039994789d45b1ae356bc04f42ec28106819453b7bf26744bd99e4e57cd31b6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f039994789d45b1ae356bc04f42ec28106819453b7bf26744bd99e4e57cd31b6", kill_on_drop: false }`
[INFO] [stdout] f039994789d45b1ae356bc04f42ec28106819453b7bf26744bd99e4e57cd31b6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] 4a5673b5b92d29047342673bf272e08f1459f22c6e018a8bae560cf094dd391d
[INFO] running `Command { std: "docker" "start" "-a" "4a5673b5b92d29047342673bf272e08f1459f22c6e018a8bae560cf094dd391d", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.32
[INFO] [stderr]    Compiling unicode-xid v0.2.2
[INFO] [stderr]    Compiling syn v1.0.82
[INFO] [stderr]    Compiling serde_derive v1.0.130
[INFO] [stderr]    Compiling serde v1.0.130
[INFO] [stderr]    Compiling ryu v1.0.6
[INFO] [stderr]    Compiling serde_json v1.0.72
[INFO] [stderr]    Compiling camino v1.0.5
[INFO] [stderr]    Compiling semver v1.0.4
[INFO] [stderr]    Compiling anyhow v1.0.51
[INFO] [stderr]     Checking itoa v0.4.8
[INFO] [stderr]     Checking indent_write v2.2.0
[INFO] [stderr]    Compiling quote v1.0.10
[INFO] [stderr]    Compiling fehler-macros v1.0.0
[INFO] [stderr]    Compiling fn-error-context v0.2.0
[INFO] [stderr]     Checking fehler v1.0.0
[INFO] [stderr]     Checking cargo-platform v0.1.2
[INFO] [stderr]     Checking rustdoc-types v0.11.0
[INFO] [stderr]     Checking cargo_metadata v0.14.1
[INFO] [stderr]  Documenting cargo-doc-tree 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(exit_status_error)]
[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 `cargo-doc-tree`
[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 cargo_doc_tree 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=ce51e589f0c633f0 -L dependency=/opt/rustwide/target/debug/deps --extern anyhow=/opt/rustwide/target/debug/deps/libanyhow-0c4a5224a35f9097.rmeta --extern camino=/opt/rustwide/target/debug/deps/libcamino-6dc7e3da57b5d6d3.rmeta --extern cargo_metadata=/opt/rustwide/target/debug/deps/libcargo_metadata-ab2a7cba695a1439.rmeta --extern fehler=/opt/rustwide/target/debug/deps/libfehler-528b330b6c713ef9.rmeta --extern fn_error_context=/opt/rustwide/target/debug/deps/libfn_error_context-345374acc4e02df7.so --extern indent_write=/opt/rustwide/target/debug/deps/libindent_write-549de5452ed43426.rmeta --extern rustdoc_types=/opt/rustwide/target/debug/deps/librustdoc_types-02184a4de9143344.rmeta --extern serde_json=/opt/rustwide/target/debug/deps/libserde_json-070848f3b6c60000.rmeta --cap-lints=warn --crate-version 0.1.0` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "4a5673b5b92d29047342673bf272e08f1459f22c6e018a8bae560cf094dd391d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4a5673b5b92d29047342673bf272e08f1459f22c6e018a8bae560cf094dd391d", kill_on_drop: false }`
[INFO] [stdout] 4a5673b5b92d29047342673bf272e08f1459f22c6e018a8bae560cf094dd391d
