[INFO] updating cached repository natumn/calc-rs
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/natumn/calc-rs
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/natumn/calc-rs" "work/ex/beta-1.38-1/sources/1.37.0/gh/natumn/calc-rs"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/natumn/calc-rs'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/natumn/calc-rs" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/natumn/calc-rs"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/natumn/calc-rs'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 5940611992ec793248bbcc9f63b4321c85406b7e
[INFO] sha for GitHub repo natumn/calc-rs: 5940611992ec793248bbcc9f63b4321c85406b7e
[INFO] validating manifest of natumn/calc-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 natumn/calc-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 natumn/calc-rs
[INFO] finished frobbing natumn/calc-rs
[INFO] frobbed toml for natumn/calc-rs written to work/ex/beta-1.38-1/sources/1.37.0/gh/natumn/calc-rs/Cargo.toml
[INFO] started frobbing natumn/calc-rs
[INFO] finished frobbing natumn/calc-rs
[INFO] frobbed toml for natumn/calc-rs written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/natumn/calc-rs/Cargo.toml
[INFO] crate natumn/calc-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 natumn/calc-rs 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-2/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/natumn/calc-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" "+1.37.0" "build" "--frozen"`
[INFO] [stdout] 213471ae0a32821e6d94eb01e0ae6431e79984f5ada910b80ad873bb5eb8279e
[INFO] running `"docker" "start" "-a" "213471ae0a32821e6d94eb01e0ae6431e79984f5ada910b80ad873bb5eb8279e"`
[INFO] [stderr]    Compiling calc-rs v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] error: expected identifier, found keyword `enum`
[INFO] [stderr]  --> src/main.rs:3:1
[INFO] [stderr]   |
[INFO] [stderr] 3 | enum Kind {
[INFO] [stderr]   | ^^^^ expected identifier, found keyword
[INFO] [stderr] help: you can escape reserved keywords to use them as identifiers
[INFO] [stderr]   |
[INFO] [stderr] 3 | r#enum Kind {
[INFO] [stderr]   | ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: expected one of `::`, `;`, or `as`, found `Kind`
[INFO] [stderr]  --> src/main.rs:3:6
[INFO] [stderr]   |
[INFO] [stderr] 3 | enum Kind {
[INFO] [stderr]   |      ^^^^ expected one of `::`, `;`, or `as` here
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 2 previous errors
[INFO] [stderr] 
[INFO] [stderr] error: Could not compile `calc-rs`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "213471ae0a32821e6d94eb01e0ae6431e79984f5ada910b80ad873bb5eb8279e"`
[INFO] running `"docker" "rm" "-f" "213471ae0a32821e6d94eb01e0ae6431e79984f5ada910b80ad873bb5eb8279e"`
[INFO] [stdout] 213471ae0a32821e6d94eb01e0ae6431e79984f5ada910b80ad873bb5eb8279e