[INFO] fetching crate fstrings-rust 1.0.1...
[INFO] documenting fstrings-rust-1.0.1 against 1.61.0 for beta-1.62-rustdoc-1
[INFO] extracting crate fstrings-rust 1.0.1 into /workspace/builds/worker-73/source
[INFO] validating manifest of crates.io crate fstrings-rust 1.0.1 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 crates.io crate fstrings-rust 1.0.1
[INFO] finished tweaking crates.io crate fstrings-rust 1.0.1
[INFO] tweaked toml for crates.io crate fstrings-rust 1.0.1 written to /workspace/builds/worker-73/source/Cargo.toml
[INFO] crate crates.io crate fstrings-rust 1.0.1 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]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded fstrings-rust-proc-macro v1.0.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-73/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-73/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] [stdout] 81d7f3a69b9c2cb8eedc7f32027da0abec258d0ba60191d0cc80ee712dea34db
[INFO] running `Command { std: "docker" "start" "-a" "81d7f3a69b9c2cb8eedc7f32027da0abec258d0ba60191d0cc80ee712dea34db", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "81d7f3a69b9c2cb8eedc7f32027da0abec258d0ba60191d0cc80ee712dea34db", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "81d7f3a69b9c2cb8eedc7f32027da0abec258d0ba60191d0cc80ee712dea34db", kill_on_drop: false }`
[INFO] [stdout] 81d7f3a69b9c2cb8eedc7f32027da0abec258d0ba60191d0cc80ee712dea34db
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-73/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-73/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] [stdout] 65019e8eb6b6380e4d6bd9549f68988dea660faf56af5487a81d8091084105ea
[INFO] running `Command { std: "docker" "start" "-a" "65019e8eb6b6380e4d6bd9549f68988dea660faf56af5487a81d8091084105ea", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.26
[INFO] [stderr]    Compiling unicode-xid v0.2.0
[INFO] [stderr]    Compiling syn v1.0.69
[INFO] [stderr]    Compiling proc-macro-hack v0.5.15
[INFO] [stderr]    Compiling quote v1.0.4
[INFO] [stderr]    Compiling fstrings-rust-proc-macro v1.0.0
[INFO] [stderr]  Documenting fstrings-rust v1.0.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 9.01s
[INFO] running `Command { std: "docker" "inspect" "65019e8eb6b6380e4d6bd9549f68988dea660faf56af5487a81d8091084105ea", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "65019e8eb6b6380e4d6bd9549f68988dea660faf56af5487a81d8091084105ea", kill_on_drop: false }`
[INFO] [stdout] 65019e8eb6b6380e4d6bd9549f68988dea660faf56af5487a81d8091084105ea
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-73/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-73/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" "RUSTC_BOOTSTRAP=1" "-e" "DOCS_RS=1" "-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" "rustdoc" "--lib" "-Zrustdoc-map" "--features" "nightly" "--frozen" "--message-format=json" "--" "-Z" "unstable-options" "--document-private-items", kill_on_drop: false }`
[INFO] [stdout] fd8b1666a33f541ed2b9f2353387a446f92cea07015039604e30687bd4becbc7
[INFO] running `Command { std: "docker" "start" "-a" "fd8b1666a33f541ed2b9f2353387a446f92cea07015039604e30687bd4becbc7", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.26
[INFO] [stderr]    Compiling unicode-xid v0.2.0
[INFO] [stderr]    Compiling syn v1.0.69
[INFO] [stderr]    Compiling proc-macro-hack v0.5.15
[INFO] [stderr]    Compiling quote v1.0.4
[INFO] [stderr]    Compiling fstrings-rust-proc-macro v1.0.0
[INFO] [stderr]  Documenting fstrings-rust v1.0.1 (/opt/rustwide/workdir)
[INFO] [stderr] error: could not document `fstrings-rust`
[INFO] [stdout] error[E0557]: feature has been removed
[INFO] [stdout]  --> src/lib.rs:2:13
[INFO] [stdout]   |
[INFO] [stdout] 2 |     feature(external_doc)
[INFO] [stdout]   |             ^^^^^^^^^^^^ feature has been removed
[INFO] [stdout]   |
[INFO] [stdout]   = note: use #[doc = include_str!("filename")] instead, which handles macro invocations
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] 
[INFO] [stdout] error: Compilation failed, aborting rustdoc
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] Caused by:
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type lib --crate-name fstrings_rust src/lib.rs -o /opt/rustwide/target/doc --cfg 'feature="default"' --cfg 'feature="nightly"' --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat -Z unstable-options --document-private-items -C metadata=54f76d61aac9a229 -L dependency=/opt/rustwide/target/debug/deps --extern proc_macro=/opt/rustwide/target/debug/deps/libfstrings_rust_proc_macro-79804d3f6089620b.so --extern proc_macro_hack=/opt/rustwide/target/debug/deps/libproc_macro_hack-c79da6eefbcc6c5c.so --extern-html-root-url 'fstrings_rust_proc_macro=https://docs.rs/fstrings-rust-proc-macro/1.0.0/' --extern-html-root-url 'proc_macro_hack=https://docs.rs/proc-macro-hack/0.5.15/' -Zunstable-options --crate-version 1.0.1` (exit status: 1)
[INFO] [stdout] For more information about this error, try `rustc --explain E0557`.
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "fd8b1666a33f541ed2b9f2353387a446f92cea07015039604e30687bd4becbc7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fd8b1666a33f541ed2b9f2353387a446f92cea07015039604e30687bd4becbc7", kill_on_drop: false }`
[INFO] [stdout] fd8b1666a33f541ed2b9f2353387a446f92cea07015039604e30687bd4becbc7