[INFO] updating cached repository werner/focusvent_front [INFO] running `"git" "fetch" "--all"` [INFO] [stdout] Fetching origin [INFO] [stderr] From git://github.com/werner/focusvent_front [INFO] [stderr] * branch HEAD -> FETCH_HEAD [INFO] running `"git" "clone" "work/cache/sources/gh/werner/focusvent_front" "work/ex/beta-1.38-1/sources/1.37.0/gh/werner/focusvent_front"` [INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/werner/focusvent_front'... [INFO] [stderr] done. [INFO] running `"git" "clone" "work/cache/sources/gh/werner/focusvent_front" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/werner/focusvent_front"` [INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/werner/focusvent_front'... [INFO] [stderr] done. [INFO] running `"git" "rev-parse" "HEAD"` [INFO] [stdout] 0f4612066b8216113d794aaed494eb04e01ad59d [INFO] sha for GitHub repo werner/focusvent_front: 0f4612066b8216113d794aaed494eb04e01ad59d [INFO] validating manifest of werner/focusvent_front on toolchain 1.37.0 [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "read-manifest" "--manifest-path" "Cargo.toml"` [INFO] validating manifest of werner/focusvent_front on toolchain beta-2019-08-13 [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "read-manifest" "--manifest-path" "Cargo.toml"` [INFO] started frobbing werner/focusvent_front [INFO] finished frobbing werner/focusvent_front [INFO] frobbed toml for werner/focusvent_front written to work/ex/beta-1.38-1/sources/1.37.0/gh/werner/focusvent_front/Cargo.toml [INFO] started frobbing werner/focusvent_front [INFO] finished frobbing werner/focusvent_front [INFO] frobbed toml for werner/focusvent_front written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/werner/focusvent_front/Cargo.toml [INFO] crate werner/focusvent_front already has a lockfile, it will not be regenerated [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] testing werner/focusvent_front against beta-2019-08-13 for beta-1.38-1 [INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-2/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/werner/focusvent_front:/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=warn" "-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" "+beta-2019-08-13" "build" "--frozen"` [INFO] [stdout] 7f3a870c2a83ac0a4a1afac9e3922cdc744dd54796d32617b3f6ba42d342120d [INFO] running `"docker" "start" "-a" "7f3a870c2a83ac0a4a1afac9e3922cdc744dd54796d32617b3f6ba42d342120d"` [INFO] [stderr] Compiling cc v1.0.18 [INFO] [stderr] Compiling serde v1.0.70 [INFO] [stderr] Compiling stdweb v0.4.8 [INFO] [stderr] Compiling anymap v0.12.1 [INFO] [stderr] Compiling proc-macro2 v0.4.9 [INFO] [stderr] Compiling log v0.4.3 [INFO] [stderr] Compiling bytes v0.4.9 [INFO] [stderr] Compiling quote v0.6.4 [INFO] [stderr] Compiling http v0.1.8 [INFO] [stderr] Compiling syn v0.14.5 [INFO] [stderr] Compiling backtrace-sys v0.1.23 [INFO] [stderr] Compiling backtrace v0.3.9 [INFO] [stderr] Compiling failure v0.1.1 [INFO] [stderr] Compiling serde_derive v1.0.70 [INFO] [stderr] Compiling serde_json v1.0.24 [INFO] [stderr] Compiling bincode v1.0.1 [INFO] [stderr] Compiling stdweb-derive v0.4.0 [INFO] [stderr] Compiling yew v0.5.0 (https://github.com/DenisKolodin/yew?rev=a5213c57430b2f18539aeb25939bdc8c5c348157#a5213c57) [INFO] [stderr] Compiling web_logger v0.1.0 [INFO] [stderr] Compiling yew_patterns v0.1.0 (https://github.com/hgzimmerman/yew_patterns?rev=63caa9553863382e136ac7b9638c9768422cdd52#63caa955) [INFO] [stderr] Compiling yew_router v0.1.0 (https://github.com/hgzimmerman/YewRouter#1f3a26f3) [INFO] [stderr] error[E0554]: `#![feature]` may not be used on the beta release channel [INFO] [stderr] --> /opt/crater/cargo-home/git/checkouts/yewrouter-c6d9def9135695f5/1f3a26f/src/lib.rs:1:1 [INFO] [stderr] | [INFO] [stderr] 1 | #![feature(never_type)] [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] error: aborting due to previous error [INFO] [stderr] [INFO] [stderr] For more information about this error, try `rustc --explain E0554`. [INFO] [stderr] error: Could not compile `yew_router`. [INFO] [stderr] [INFO] [stderr] To learn more, run the command again with --verbose. [INFO] running `"docker" "inspect" "7f3a870c2a83ac0a4a1afac9e3922cdc744dd54796d32617b3f6ba42d342120d"` [INFO] running `"docker" "rm" "-f" "7f3a870c2a83ac0a4a1afac9e3922cdc744dd54796d32617b3f6ba42d342120d"` [INFO] [stdout] 7f3a870c2a83ac0a4a1afac9e3922cdc744dd54796d32617b3f6ba42d342120d