[INFO] updating cached repository Journeycorner/kompressor
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/Journeycorner/kompressor
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/Journeycorner/kompressor" "work/ex/beta-1.38-1/sources/1.37.0/gh/Journeycorner/kompressor"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/Journeycorner/kompressor'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/Journeycorner/kompressor" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/Journeycorner/kompressor"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/Journeycorner/kompressor'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] e9808c829cd13c2ad5de4d4fb44a8a8f72818943
[INFO] sha for GitHub repo Journeycorner/kompressor: e9808c829cd13c2ad5de4d4fb44a8a8f72818943
[INFO] validating manifest of Journeycorner/kompressor 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 Journeycorner/kompressor 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 Journeycorner/kompressor
[INFO] finished frobbing Journeycorner/kompressor
[INFO] frobbed toml for Journeycorner/kompressor written to work/ex/beta-1.38-1/sources/1.37.0/gh/Journeycorner/kompressor/Cargo.toml
[INFO] started frobbing Journeycorner/kompressor
[INFO] finished frobbing Journeycorner/kompressor
[INFO] frobbed toml for Journeycorner/kompressor written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/Journeycorner/kompressor/Cargo.toml
[INFO] crate Journeycorner/kompressor 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 Journeycorner/kompressor 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-1/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/Journeycorner/kompressor:/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] 0ddf666835e86b5e2ac98e11beb21c36e01de75990d50a9fcba3613e18c20d3f
[INFO] running `"docker" "start" "-a" "0ddf666835e86b5e2ac98e11beb21c36e01de75990d50a9fcba3613e18c20d3f"`
[INFO] [stderr]    Compiling stdweb v0.4.7
[INFO] [stderr]    Compiling serde_json v1.0.22
[INFO] [stderr]    Compiling stdweb-derive v0.4.0
[INFO] [stderr]    Compiling kompressor v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] error[E0432]: unresolved import `stdweb::js_export`
[INFO] [stderr]  --> src/main.rs:6:5
[INFO] [stderr]   |
[INFO] [stderr] 6 | use stdweb::js_export;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^ no `js_export` in the root
[INFO] [stderr] 
[INFO] [stderr] error: cannot determine resolution for the attribute macro `js_export`
[INFO] [stderr]   --> src/main.rs:24:3
[INFO] [stderr]    |
[INFO] [stderr] 24 | #[js_export]
[INFO] [stderr]    |   ^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: import resolution is stuck, try simplifying macro imports
[INFO] [stderr] 
[INFO] [stderr] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stderr]  --> src/main.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | #![feature(proc_macro)]
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `stdweb::Reference`
[INFO] [stderr]  --> src/main.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 | use stdweb::Reference;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `stdweb::web::Blob`
[INFO] [stderr]  --> src/main.rs:8:5
[INFO] [stderr]   |
[INFO] [stderr] 8 | use stdweb::web::Blob;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `stdweb::web::document`
[INFO] [stderr]  --> src/main.rs:9:5
[INFO] [stderr]   |
[INFO] [stderr] 9 | use stdweb::web::document;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `stdweb::web::IBlob`
[INFO] [stderr]   --> src/main.rs:12:5
[INFO] [stderr]    |
[INFO] [stderr] 12 | use stdweb::web::IBlob;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 3 previous errors
[INFO] [stderr] 
[INFO] [stderr] Some errors have detailed explanations: E0432, E0554.
[INFO] [stderr] For more information about an error, try `rustc --explain E0432`.
[INFO] [stderr] error: Could not compile `kompressor`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "0ddf666835e86b5e2ac98e11beb21c36e01de75990d50a9fcba3613e18c20d3f"`
[INFO] running `"docker" "rm" "-f" "0ddf666835e86b5e2ac98e11beb21c36e01de75990d50a9fcba3613e18c20d3f"`
[INFO] [stdout] 0ddf666835e86b5e2ac98e11beb21c36e01de75990d50a9fcba3613e18c20d3f