[INFO] updating cached repository Adam-Gleave/tracer-rs
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/Adam-Gleave/tracer-rs
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/Adam-Gleave/tracer-rs" "work/ex/beta-1.38-1/sources/1.37.0/gh/Adam-Gleave/tracer-rs"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/Adam-Gleave/tracer-rs'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/Adam-Gleave/tracer-rs" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/Adam-Gleave/tracer-rs"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/Adam-Gleave/tracer-rs'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] f05cc9dd359ddde9ea92e4f7966e7cdad4dc2431
[INFO] sha for GitHub repo Adam-Gleave/tracer-rs: f05cc9dd359ddde9ea92e4f7966e7cdad4dc2431
[INFO] validating manifest of Adam-Gleave/tracer-rs 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 Adam-Gleave/tracer-rs 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 Adam-Gleave/tracer-rs
[INFO] finished frobbing Adam-Gleave/tracer-rs
[INFO] frobbed toml for Adam-Gleave/tracer-rs written to work/ex/beta-1.38-1/sources/1.37.0/gh/Adam-Gleave/tracer-rs/Cargo.toml
[INFO] started frobbing Adam-Gleave/tracer-rs
[INFO] finished frobbing Adam-Gleave/tracer-rs
[INFO] frobbed toml for Adam-Gleave/tracer-rs written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/Adam-Gleave/tracer-rs/Cargo.toml
[INFO] crate Adam-Gleave/tracer-rs 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 Adam-Gleave/tracer-rs 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-7/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/Adam-Gleave/tracer-rs:/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] bc45abfe0ac5ced2677364475322fa7936bfa5f06bffee518e978670cde39652
[INFO] running `"docker" "start" "-a" "bc45abfe0ac5ced2677364475322fa7936bfa5f06bffee518e978670cde39652"`
[INFO] [stderr]    Compiling num-bigint v0.1.44
[INFO] [stderr]    Compiling num-rational v0.1.42
[INFO] [stderr]    Compiling num v0.1.42
[INFO] [stderr]    Compiling coord v0.11.0
[INFO] [stderr] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stderr]   --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/coord-0.11.0/src/lib.rs:48:1
[INFO] [stderr]    |
[INFO] [stderr] 48 | #![feature(alloc)]
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stderr]   --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/coord-0.11.0/src/lib.rs:50:1
[INFO] [stderr]    |
[INFO] [stderr] 50 | #![feature(euclidean_division)]
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 2 previous errors
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0554`.
[INFO] [stderr] error: Could not compile `coord`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "bc45abfe0ac5ced2677364475322fa7936bfa5f06bffee518e978670cde39652"`
[INFO] running `"docker" "rm" "-f" "bc45abfe0ac5ced2677364475322fa7936bfa5f06bffee518e978670cde39652"`
[INFO] [stdout] bc45abfe0ac5ced2677364475322fa7936bfa5f06bffee518e978670cde39652