[INFO] updating cached repository mdjasper/rust-wasm-video-stream
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/mdjasper/rust-wasm-video-stream
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/mdjasper/rust-wasm-video-stream" "work/ex/beta-1.38-1/sources/1.37.0/gh/mdjasper/rust-wasm-video-stream"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/mdjasper/rust-wasm-video-stream'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/mdjasper/rust-wasm-video-stream" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/mdjasper/rust-wasm-video-stream"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/mdjasper/rust-wasm-video-stream'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 6a14db5681ca7d39e0dbc6fa104b738f28f29f01
[INFO] sha for GitHub repo mdjasper/rust-wasm-video-stream: 6a14db5681ca7d39e0dbc6fa104b738f28f29f01
[INFO] validating manifest of mdjasper/rust-wasm-video-stream 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 mdjasper/rust-wasm-video-stream 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 mdjasper/rust-wasm-video-stream
[INFO] finished frobbing mdjasper/rust-wasm-video-stream
[INFO] frobbed toml for mdjasper/rust-wasm-video-stream written to work/ex/beta-1.38-1/sources/1.37.0/gh/mdjasper/rust-wasm-video-stream/Cargo.toml
[INFO] started frobbing mdjasper/rust-wasm-video-stream
[INFO] finished frobbing mdjasper/rust-wasm-video-stream
[INFO] frobbed toml for mdjasper/rust-wasm-video-stream written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/mdjasper/rust-wasm-video-stream/Cargo.toml
[INFO] crate mdjasper/rust-wasm-video-stream 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 mdjasper/rust-wasm-video-stream against 1.37.0 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-1/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/mdjasper/rust-wasm-video-stream:/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" "+1.37.0" "build" "--frozen"`
[INFO] [stdout] db2081d66e884a04b7c56643ee85dbd9700ce9d70da0384c06077dd35bc5dbbf
[INFO] running `"docker" "start" "-a" "db2081d66e884a04b7c56643ee85dbd9700ce9d70da0384c06077dd35bc5dbbf"`
[INFO] [stderr]    Compiling wasm-bindgen-shared v0.2.25
[INFO] [stderr]    Compiling wasm-bindgen v0.2.25
[INFO] [stderr]    Compiling syn v0.15.11
[INFO] [stderr]    Compiling serde_derive v1.0.80
[INFO] [stderr]    Compiling wasm-bindgen-backend v0.2.25
[INFO] [stderr]    Compiling wasm-bindgen-macro-support v0.2.25
[INFO] [stderr]    Compiling wasm-bindgen-macro v0.2.25
[INFO] [stderr]    Compiling wasm-bindgen-lib v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] error[E0554]: #![feature] may not be used on the stable release channel
[INFO] [stderr]  --> src/lib.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | #![feature(const_vec_new)]
[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 `wasm-bindgen-lib`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "db2081d66e884a04b7c56643ee85dbd9700ce9d70da0384c06077dd35bc5dbbf"`
[INFO] running `"docker" "rm" "-f" "db2081d66e884a04b7c56643ee85dbd9700ce9d70da0384c06077dd35bc5dbbf"`
[INFO] [stdout] db2081d66e884a04b7c56643ee85dbd9700ce9d70da0384c06077dd35bc5dbbf