Dec 17 21:23:50.847 INFO checking kirjavascript/duplex against master#96d1334e567237b1507cd277938e7ae2de75ff51 for pr-54252
Dec 17 21:23:50.847 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-54252/worker-5/master#96d1334e567237b1507cd277938e7ae2de75ff51:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-54252/sources/master#96d1334e567237b1507cd277938e7ae2de75ff51/gh/kirjavascript/duplex:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+96d1334e567237b1507cd277938e7ae2de75ff51-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 17 21:23:51.175 INFO [stdout] 892e70b81e5b702363a338d92062c118feb593a5eb641b9e386c1b40414c677c
Dec 17 21:23:51.178 INFO running `"docker" "start" "-a" "892e70b81e5b702363a338d92062c118feb593a5eb641b9e386c1b40414c677c"`
Dec 17 21:23:52.841 INFO [stderr]     Checking memchr v2.1.1
Dec 17 21:23:53.628 INFO [stderr]     Checking nom v4.1.1
Dec 17 21:23:55.350 INFO [stderr]     Checking duplex v0.1.0 (/opt/crater/workdir)
Dec 17 21:23:55.932 INFO [stderr] error[E0658]: The attribute `js_export` is currently unknown to the compiler and may have meaning added to it in the future (see issue #29642)
Dec 17 21:23:55.932 INFO [stderr]  --> src/web.rs:6:3
Dec 17 21:23:55.932 INFO [stderr]   |
Dec 17 21:23:55.932 INFO [stderr] 6 | #[js_export]
Dec 17 21:23:55.932 INFO [stderr]   |   ^^^^^^^^^
Dec 17 21:23:55.932 INFO [stderr]   |
Dec 17 21:23:55.932 INFO [stderr]   = help: add #![feature(custom_attribute)] to the crate attributes to enable
Dec 17 21:23:55.932 INFO [stderr] 
Dec 17 21:23:55.933 INFO [stderr] error: aborting due to previous error
Dec 17 21:23:55.933 INFO [stderr] 
Dec 17 21:23:55.933 INFO [stderr] For more information about this error, try `rustc --explain E0658`.
Dec 17 21:23:55.956 INFO [stderr] error: Could not compile `duplex`.
Dec 17 21:23:55.956 INFO [stderr] warning: build failed, waiting for other jobs to finish...
Dec 17 21:23:55.956 INFO [stderr] error[E0658]: The attribute `js_export` is currently unknown to the compiler and may have meaning added to it in the future (see issue #29642)
Dec 17 21:23:55.956 INFO [stderr]  --> src/web.rs:6:3
Dec 17 21:23:55.956 INFO [stderr]   |
Dec 17 21:23:55.956 INFO [stderr] 6 | #[js_export]
Dec 17 21:23:55.956 INFO [stderr]   |   ^^^^^^^^^
Dec 17 21:23:55.956 INFO [stderr]   |
Dec 17 21:23:55.956 INFO [stderr]   = help: add #![feature(custom_attribute)] to the crate attributes to enable
Dec 17 21:23:55.956 INFO [stderr] 
Dec 17 21:23:55.956 INFO [stderr] error: aborting due to previous error
Dec 17 21:23:55.956 INFO [stderr] 
Dec 17 21:23:55.956 INFO [stderr] For more information about this error, try `rustc --explain E0658`.
Dec 17 21:23:55.962 INFO [stderr] error: Could not compile `duplex`.
Dec 17 21:23:55.962 INFO [stderr] 
Dec 17 21:23:55.962 INFO [stderr] To learn more, run the command again with --verbose.
Dec 17 21:23:57.064 INFO running `"docker" "inspect" "892e70b81e5b702363a338d92062c118feb593a5eb641b9e386c1b40414c677c"`
Dec 17 21:23:57.386 INFO running `"docker" "rm" "-f" "892e70b81e5b702363a338d92062c118feb593a5eb641b9e386c1b40414c677c"`
Dec 17 21:23:57.711 INFO [stdout] 892e70b81e5b702363a338d92062c118feb593a5eb641b9e386c1b40414c677c