[INFO] updating cached repository GreenLoofa/ray_tracer
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/GreenLoofa/ray_tracer
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/GreenLoofa/ray_tracer" "work/ex/beta-1.38-1/sources/1.37.0/gh/GreenLoofa/ray_tracer"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/GreenLoofa/ray_tracer'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/GreenLoofa/ray_tracer" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/GreenLoofa/ray_tracer"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/GreenLoofa/ray_tracer'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 782d86cfe7cf3862faae60f7ef6771c519965905
[INFO] sha for GitHub repo GreenLoofa/ray_tracer: 782d86cfe7cf3862faae60f7ef6771c519965905
[INFO] validating manifest of GreenLoofa/ray_tracer 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 GreenLoofa/ray_tracer 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 GreenLoofa/ray_tracer
[INFO] finished frobbing GreenLoofa/ray_tracer
[INFO] frobbed toml for GreenLoofa/ray_tracer written to work/ex/beta-1.38-1/sources/1.37.0/gh/GreenLoofa/ray_tracer/Cargo.toml
[INFO] started frobbing GreenLoofa/ray_tracer
[INFO] finished frobbing GreenLoofa/ray_tracer
[INFO] frobbed toml for GreenLoofa/ray_tracer written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/GreenLoofa/ray_tracer/Cargo.toml
[INFO] crate GreenLoofa/ray_tracer 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] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing GreenLoofa/ray_tracer 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-4/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/GreenLoofa/ray_tracer:/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] 53f2cc8e36415744a50aea6012351d26b80af2ca8fac62d80abb428e1242e39f
[INFO] running `"docker" "start" "-a" "53f2cc8e36415744a50aea6012351d26b80af2ca8fac62d80abb428e1242e39f"`
[INFO] [stderr]    Compiling libc v0.2.40
[INFO] [stderr]    Compiling rand v0.4.2
[INFO] [stderr]    Compiling rand v0.3.22
[INFO] [stderr]    Compiling ray_tracer v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] error: unknown start of token: `
[INFO] [stderr]    --> src/main.rs:157:18
[INFO] [stderr]     |
[INFO] [stderr] 157 |     let ns = 100;`
[INFO] [stderr]     |                  ^
[INFO] [stderr] help: Unicode character '`' (Grave Accent) looks like ''' (Single Quote), but it is not
[INFO] [stderr]     |
[INFO] [stderr] 157 |     let ns = 100;'
[INFO] [stderr]     |                  ^
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] error: Could not compile `ray_tracer`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "53f2cc8e36415744a50aea6012351d26b80af2ca8fac62d80abb428e1242e39f"`
[INFO] running `"docker" "rm" "-f" "53f2cc8e36415744a50aea6012351d26b80af2ca8fac62d80abb428e1242e39f"`
[INFO] [stdout] 53f2cc8e36415744a50aea6012351d26b80af2ca8fac62d80abb428e1242e39f