[INFO] updating cached repository jackwillis/font-metrics
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/jackwillis/font-metrics
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/jackwillis/font-metrics" "work/ex/beta-1.38-1/sources/1.37.0/gh/jackwillis/font-metrics"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/jackwillis/font-metrics'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/jackwillis/font-metrics" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/jackwillis/font-metrics"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/jackwillis/font-metrics'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] c24318bffa11feeb118b379eca016471bb5633a5
[INFO] sha for GitHub repo jackwillis/font-metrics: c24318bffa11feeb118b379eca016471bb5633a5
[INFO] validating manifest of jackwillis/font-metrics 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 jackwillis/font-metrics 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 jackwillis/font-metrics
[INFO] finished frobbing jackwillis/font-metrics
[INFO] frobbed toml for jackwillis/font-metrics written to work/ex/beta-1.38-1/sources/1.37.0/gh/jackwillis/font-metrics/Cargo.toml
[INFO] started frobbing jackwillis/font-metrics
[INFO] finished frobbing jackwillis/font-metrics
[INFO] frobbed toml for jackwillis/font-metrics written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/jackwillis/font-metrics/Cargo.toml
[INFO] crate jackwillis/font-metrics 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 jackwillis/font-metrics 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/jackwillis/font-metrics:/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] dcf5524f61e42f935fd93584caa8ad64173763da88d481d7a487cad27da23cb1
[INFO] running `"docker" "start" "-a" "dcf5524f61e42f935fd93584caa8ad64173763da88d481d7a487cad27da23cb1"`
[INFO] [stderr]    Compiling heapsize v0.4.2
[INFO] [stderr]    Compiling pom v1.1.0
[INFO] [stderr]    Compiling linked-hash-map v0.3.0
[INFO] [stderr]    Compiling postscript v0.11.1
[INFO] [stderr]    Compiling miniz-sys v0.1.10
[INFO] [stderr]    Compiling approx v0.2.0
[INFO] [stderr]    Compiling num-bigint v0.1.44
[INFO] [stderr]    Compiling ordered-float v0.5.0
[INFO] [stderr]    Compiling chrono v0.3.0
[INFO] [stderr]    Compiling rusttype v0.6.1
[INFO] [stderr]    Compiling type1-encoding-parser v0.1.0
[INFO] [stderr]    Compiling adobe-cmap-parser v0.3.2
[INFO] [stderr]    Compiling euclid v0.15.6
[INFO] [stderr]    Compiling flate2 v0.2.20
[INFO] [stderr]    Compiling num-rational v0.1.42
[INFO] [stderr]    Compiling lopdf v0.15.1
[INFO] [stderr]    Compiling pdf-extract v0.4.3
[INFO] [stderr]    Compiling font_metrics v0.0.4 (/opt/crater/workdir)
[INFO] [stderr] error: expected one of `,`, `.`, `?`, `}`, or an operator, found `_`
[INFO] [stderr]    --> bin/fm-fit.rs:181:13
[INFO] [stderr]     |
[INFO] [stderr] 180 |             "russian" => include_str!("../resources/russian.example.tex")
[INFO] [stderr]     |                       -- while parsing the `match` arm starting here     - expected one of `,`, `.`, `?`, `}`, or an operator here
[INFO] [stderr] 181 |             _ => "uh oh",
[INFO] [stderr]     |             ^ unexpected token
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `English`
[INFO] [stderr]   --> bin/fm-darkness.rs:17:5
[INFO] [stderr]    |
[INFO] [stderr] 17 |     English,
[INFO] [stderr]    |     ^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Russian`
[INFO] [stderr]   --> bin/fm-darkness.rs:18:5
[INFO] [stderr]    |
[INFO] [stderr] 18 |     Russian,
[INFO] [stderr]    |     ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Custom`
[INFO] [stderr]   --> bin/fm-darkness.rs:20:5
[INFO] [stderr]    |
[INFO] [stderr] 20 |     Custom(String),
[INFO] [stderr]    |     ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] error: Could not compile `font_metrics`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "dcf5524f61e42f935fd93584caa8ad64173763da88d481d7a487cad27da23cb1"`
[INFO] running `"docker" "rm" "-f" "dcf5524f61e42f935fd93584caa8ad64173763da88d481d7a487cad27da23cb1"`
[INFO] [stdout] dcf5524f61e42f935fd93584caa8ad64173763da88d481d7a487cad27da23cb1