[INFO] updating cached repository Bestra/lox-rs
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/Bestra/lox-rs
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/Bestra/lox-rs" "work/ex/beta-1.37-6/sources/1.36.0/gh/Bestra/lox-rs"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/1.36.0/gh/Bestra/lox-rs'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/Bestra/lox-rs" "work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/Bestra/lox-rs"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/Bestra/lox-rs'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 0534ee5bf78d44d8ed0b13be864ceb16a664f4c0
[INFO] sha for GitHub repo Bestra/lox-rs: 0534ee5bf78d44d8ed0b13be864ceb16a664f4c0
[INFO] validating manifest of Bestra/lox-rs on toolchain 1.36.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of Bestra/lox-rs on toolchain beta-2019-07-23
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing Bestra/lox-rs
[INFO] finished frobbing Bestra/lox-rs
[INFO] frobbed toml for Bestra/lox-rs written to work/ex/beta-1.37-6/sources/1.36.0/gh/Bestra/lox-rs/Cargo.toml
[INFO] started frobbing Bestra/lox-rs
[INFO] finished frobbing Bestra/lox-rs
[INFO] frobbed toml for Bestra/lox-rs written to work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/Bestra/lox-rs/Cargo.toml
[INFO] crate Bestra/lox-rs already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing Bestra/lox-rs against 1.36.0 for beta-1.37-6
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-5/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/gh/Bestra/lox-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" "+1.36.0" "build" "--frozen"`
[INFO] [stdout] a48fad4fbf492d88c8593b83045120e9411ae2ea10f9ce2bc5f2cf7273f9621f
[INFO] running `"docker" "start" "-a" "a48fad4fbf492d88c8593b83045120e9411ae2ea10f9ce2bc5f2cf7273f9621f"`
[INFO] [stderr]    Compiling lox v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/main.rs:35:17
[INFO] [stderr]    |
[INFO] [stderr] 35 |             let mut interpreter = Interpreter::new();
[INFO] [stderr]    |                 ----^^^^^^^^^^^
[INFO] [stderr]    |                 |
[INFO] [stderr]    |                 help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_mut)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.59s
[INFO] running `"docker" "inspect" "a48fad4fbf492d88c8593b83045120e9411ae2ea10f9ce2bc5f2cf7273f9621f"`
[INFO] running `"docker" "rm" "-f" "a48fad4fbf492d88c8593b83045120e9411ae2ea10f9ce2bc5f2cf7273f9621f"`
[INFO] [stdout] a48fad4fbf492d88c8593b83045120e9411ae2ea10f9ce2bc5f2cf7273f9621f
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-5/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/gh/Bestra/lox-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" "+1.36.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] 5bffb05671320a8afd1acb2a969640b3cbd4cf4867a33d1336b86f06d3d4b99f
[INFO] running `"docker" "start" "-a" "5bffb05671320a8afd1acb2a969640b3cbd4cf4867a33d1336b86f06d3d4b99f"`
[INFO] [stderr]    Compiling lox v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] error[E0432]: unresolved import `Scanner`
[INFO] [stderr]    --> src/scanner.rs:233:9
[INFO] [stderr]     |
[INFO] [stderr] 233 |     use Scanner;
[INFO] [stderr]     |         ^^^^^^^
[INFO] [stderr]     |         |
[INFO] [stderr]     |         no `Scanner` in the root
[INFO] [stderr]     |         help: a similar name exists in the module: `scanner`
[INFO] [stderr] 
[INFO] [stderr] error[E0432]: unresolved import `TokenType`
[INFO] [stderr]    --> src/scanner.rs:234:9
[INFO] [stderr]     |
[INFO] [stderr] 234 |     use TokenType;
[INFO] [stderr]     |         ^^^^^^^^^ no `TokenType` in the root
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/main.rs:35:17
[INFO] [stderr]    |
[INFO] [stderr] 35 |             let mut interpreter = Interpreter::new();
[INFO] [stderr]    |                 ----^^^^^^^^^^^
[INFO] [stderr]    |                 |
[INFO] [stderr]    |                 help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_mut)] on by default
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 2 previous errors
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0432`.
[INFO] [stderr] error: Could not compile `lox`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "5bffb05671320a8afd1acb2a969640b3cbd4cf4867a33d1336b86f06d3d4b99f"`
[INFO] running `"docker" "rm" "-f" "5bffb05671320a8afd1acb2a969640b3cbd4cf4867a33d1336b86f06d3d4b99f"`
[INFO] [stdout] 5bffb05671320a8afd1acb2a969640b3cbd4cf4867a33d1336b86f06d3d4b99f