[INFO] crate router-xiaobei 0.1.2 is already in cache
[INFO] extracting crate router-xiaobei 0.1.2 into work/ex/beta-1.37-6/sources/1.36.0/reg/router-xiaobei/0.1.2
[INFO] extracting crate router-xiaobei 0.1.2 into work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/router-xiaobei/0.1.2
[INFO] validating manifest of router-xiaobei-0.1.2 on toolchain 1.36.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of router-xiaobei-0.1.2 on toolchain beta-2019-07-23
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing router-xiaobei-0.1.2
[INFO] finished frobbing router-xiaobei-0.1.2
[INFO] frobbed toml for router-xiaobei-0.1.2 written to work/ex/beta-1.37-6/sources/1.36.0/reg/router-xiaobei/0.1.2/Cargo.toml
[INFO] started frobbing router-xiaobei-0.1.2
[INFO] finished frobbing router-xiaobei-0.1.2
[INFO] frobbed toml for router-xiaobei-0.1.2 written to work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/router-xiaobei/0.1.2/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing router-xiaobei-0.1.2 against 1.36.0 for beta-1.37-6
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-4/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/reg/router-xiaobei/0.1.2:/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" "+1.36.0" "build" "--frozen"`
[INFO] [stdout] 617dcc4f7e7ee6b8de9d94a2d9358d2ce3a4f9abea42cbc566cee24af8d5461a
[INFO] running `"docker" "start" "-a" "617dcc4f7e7ee6b8de9d94a2d9358d2ce3a4f9abea42cbc566cee24af8d5461a"`
[INFO] [stderr]    Compiling libc v0.2.60
[INFO] [stderr]    Compiling syn v0.15.42
[INFO] [stderr]    Compiling wasm-bindgen-shared v0.2.48
[INFO] [stderr]    Compiling bumpalo v2.5.0
[INFO] [stderr]    Compiling wasm-bindgen v0.2.48
[INFO] [stderr]    Compiling sourcefile v0.1.4
[INFO] [stderr]    Compiling weedle v0.10.0
[INFO] [stderr]    Compiling backtrace-sys v0.1.31
[INFO] [stderr]    Compiling backtrace v0.3.34
[INFO] [stderr]    Compiling synstructure v0.10.2
[INFO] [stderr]    Compiling wasm-bindgen-backend v0.2.48
[INFO] [stderr]    Compiling router-xiaobei-macro v0.1.0
[INFO] [stderr]    Compiling failure_derive v0.1.5
[INFO] [stderr]    Compiling failure v0.1.5
[INFO] [stderr]    Compiling wasm-bindgen-macro-support v0.2.48
[INFO] [stderr]    Compiling wasm-bindgen-webidl v0.2.48
[INFO] [stderr]    Compiling wasm-bindgen-macro v0.2.48
[INFO] [stderr]    Compiling web-sys v0.3.25
[INFO] [stderr]    Compiling js-sys v0.3.25
[INFO] [stderr]    Compiling wasm-bindgen-futures v0.3.25
[INFO] [stderr]    Compiling dodrio v0.1.0
[INFO] [stderr]    Compiling router-xiaobei v0.1.2 (/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(proc_macro_hygiene)]
[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 `router-xiaobei`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "617dcc4f7e7ee6b8de9d94a2d9358d2ce3a4f9abea42cbc566cee24af8d5461a"`
[INFO] running `"docker" "rm" "-f" "617dcc4f7e7ee6b8de9d94a2d9358d2ce3a4f9abea42cbc566cee24af8d5461a"`
[INFO] [stdout] 617dcc4f7e7ee6b8de9d94a2d9358d2ce3a4f9abea42cbc566cee24af8d5461a