Build failed. If you want to re-trigger a documentation build, you can do it here. You can find more information on docs.rs builds documentation on the builds page.
# rustc version rustc 1.38.0-nightly (95b1fe560 2019-07-20)
# docs.rs version cratesfyi 0.6.0 (4640239 2019-07-25)
# build log Updating crates.io index Fresh unicode-xid v0.1.0 Fresh proc-macro2 v0.4.30 Fresh quote v0.6.13 Fresh syn v0.15.42 Documenting constructor-macro v0.4.2 Running `rustdoc --edition=2018 --crate-name constructor_macro /home/cratesfyi/.cargo/registry/src/github.com-1ecc6299db9ec823/constructor-macro-0.4.2/src/lib.rs --cap-lints allow --color never -o /home/cratesfyi/cratesfyi/doc -Z unstable-options --resource-suffix -20190720-1.38.0-nightly-95b1fe560 --static-root-path / --disable-per-crate-search --extern-html-root-url 'proc_macro2=https://docs.rs/proc-macro2/0.4.30' --extern-html-root-url 'quote=https://docs.rs/quote/0.6.13' --extern-html-root-url 'syn=https://docs.rs/syn/0.15.42' -L dependency=/home/cratesfyi/cratesfyi/debug/deps --extern proc_macro2=/home/cratesfyi/cratesfyi/debug/deps/libproc_macro2-eccbefa2d5193c1f.rmeta --extern quote=/home/cratesfyi/cratesfyi/debug/deps/libquote-87bc01c45da7d88d.rmeta --extern syn=/home/cratesfyi/cratesfyi/debug/deps/libsyn-93a033be28bdb180.rmeta` error: the option `extern-html-root-url` is only accepted on the nightly compiler thread 'main' panicked at 'ProcessError { desc: "process didn\'t exit successfully: `rustdoc --edition=2018 --crate-name constructor_macro /home/cratesfyi/.cargo/registry/src/github.com-1ecc6299db9ec823/constructor-macro-0.4.2/src/lib.rs --cap-lints allow --color never -o /home/cratesfyi/cratesfyi/doc -Z unstable-options --resource-suffix -20190720-1.38.0-nightly-95b1fe560 --static-root-path / --disable-per-crate-search --extern-html-root-url \'proc_macro2=https://docs.rs/proc-macro2/0.4.30\' --extern-html-root-url \'quote=https://docs.rs/quote/0.6.13\' --extern-html-root-url \'syn=https://docs.rs/syn/0.15.42\' -L dependency=/home/cratesfyi/cratesfyi/debug/deps --extern proc_macro2=/home/cratesfyi/cratesfyi/debug/deps/libproc_macro2-eccbefa2d5193c1f.rmeta --extern quote=/home/cratesfyi/cratesfyi/debug/deps/libquote-87bc01c45da7d88d.rmeta --extern syn=/home/cratesfyi/cratesfyi/debug/deps/libsyn-93a033be28bdb180.rmeta` (exit code: 1)", exit: Some(ExitStatus(ExitStatus(256))), output: None } Could not document `constructor-macro`.', src/bin/cratesfyi.rs:161:13 note: Run with `RUST_BACKTRACE=1` environment variable to display a backtrace.