[INFO] updating cached repository johnpmayer/canvas-demo
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/johnpmayer/canvas-demo
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/johnpmayer/canvas-demo" "work/ex/beta-1.38-1/sources/1.37.0/gh/johnpmayer/canvas-demo"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/johnpmayer/canvas-demo'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/johnpmayer/canvas-demo" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/johnpmayer/canvas-demo"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/johnpmayer/canvas-demo'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] a907172571c52f6d172c2a954b61a18195b350ee
[INFO] sha for GitHub repo johnpmayer/canvas-demo: a907172571c52f6d172c2a954b61a18195b350ee
[INFO] validating manifest of johnpmayer/canvas-demo 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 johnpmayer/canvas-demo 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 johnpmayer/canvas-demo
[INFO] finished frobbing johnpmayer/canvas-demo
[INFO] frobbed toml for johnpmayer/canvas-demo written to work/ex/beta-1.38-1/sources/1.37.0/gh/johnpmayer/canvas-demo/Cargo.toml
[INFO] started frobbing johnpmayer/canvas-demo
[INFO] finished frobbing johnpmayer/canvas-demo
[INFO] frobbed toml for johnpmayer/canvas-demo written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/johnpmayer/canvas-demo/Cargo.toml
[INFO] crate johnpmayer/canvas-demo 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 johnpmayer/canvas-demo 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/johnpmayer/canvas-demo:/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] 3d3a8d6cdd19015719f1c53b618e2cd0e4dfdedf5fd9fcd06dd61f57359632bf
[INFO] running `"docker" "start" "-a" "3d3a8d6cdd19015719f1c53b618e2cd0e4dfdedf5fd9fcd06dd61f57359632bf"`
[INFO] [stderr]    Compiling libc v0.2.36
[INFO] [stderr]    Compiling memchr v1.0.2
[INFO] [stderr]    Compiling nom v3.2.1
[INFO] [stderr]    Compiling glsl v0.7.2
[INFO] [stderr]    Compiling canvas-demo v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused variable: `vert_source`
[INFO] [stderr]   --> build.rs:57:14
[INFO] [stderr]    |
[INFO] [stderr] 57 |         let (vert_source, vert_declarations) = parse_file(vert_filename.as_str())?;
[INFO] [stderr]    |              ^^^^^^^^^^^ help: consider prefixing with an underscore: `_vert_source`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `vert_declarations`
[INFO] [stderr]   --> build.rs:57:27
[INFO] [stderr]    |
[INFO] [stderr] 57 |         let (vert_source, vert_declarations) = parse_file(vert_filename.as_str())?;
[INFO] [stderr]    |                           ^^^^^^^^^^^^^^^^^ help: consider prefixing with an underscore: `_vert_declarations`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `frag_source`
[INFO] [stderr]   --> build.rs:58:14
[INFO] [stderr]    |
[INFO] [stderr] 58 |         let (frag_source, frag_declarations) = parse_file(frag_filename.as_str())?;
[INFO] [stderr]    |              ^^^^^^^^^^^ help: consider prefixing with an underscore: `_frag_source`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `frag_declarations`
[INFO] [stderr]   --> build.rs:58:27
[INFO] [stderr]    |
[INFO] [stderr] 58 |         let (frag_source, frag_declarations) = parse_file(frag_filename.as_str())?;
[INFO] [stderr]    |                           ^^^^^^^^^^^^^^^^^ help: consider prefixing with an underscore: `_frag_declarations`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `rust_filename`
[INFO] [stderr]   --> build.rs:56:71
[INFO] [stderr]    |
[INFO] [stderr] 56 |     pub fn process_file(vert_filename: String, frag_filename: String, rust_filename: String) -> Result<(), CompilerError> {
[INFO] [stderr]    |                                                                       ^^^^^^^^^^^^^ help: consider prefixing with an underscore: `_rust_filename`
[INFO] [stderr] 
[INFO] [stderr] error: failed to run custom build command for `canvas-demo v0.1.0 (/opt/crater/workdir)`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/crater/target/debug/build/canvas-demo-9b0441aab6b4128c/build-script-build` (exit code: 1)
[INFO] [stderr] --- stdout
[INFO] [stderr] Compiling src/shaders/purple_vert.glsl & src/shaders/purple_frag.glsl to src/shaders/purple.rs
[INFO] [stderr] Success parsing src/shaders/purple_vert.glsl
[INFO] [stderr] Success parsing src/shaders/purple_frag.glsl
[INFO] [stderr] All good! Faking a bad exit code for debugging.
[INFO] [stderr] 
[INFO] running `"docker" "inspect" "3d3a8d6cdd19015719f1c53b618e2cd0e4dfdedf5fd9fcd06dd61f57359632bf"`
[INFO] running `"docker" "rm" "-f" "3d3a8d6cdd19015719f1c53b618e2cd0e4dfdedf5fd9fcd06dd61f57359632bf"`
[INFO] [stdout] 3d3a8d6cdd19015719f1c53b618e2cd0e4dfdedf5fd9fcd06dd61f57359632bf