[INFO] updating cached repository sappharx/mdn-cli
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/sappharx/mdn-cli
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/sappharx/mdn-cli" "work/ex/beta-1.37-6/sources/1.36.0/gh/sappharx/mdn-cli"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/1.36.0/gh/sappharx/mdn-cli'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/sappharx/mdn-cli" "work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/sappharx/mdn-cli"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/sappharx/mdn-cli'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 7483ed7aec9799663b1c9098857afcd10d1ee8ab
[INFO] sha for GitHub repo sappharx/mdn-cli: 7483ed7aec9799663b1c9098857afcd10d1ee8ab
[INFO] validating manifest of sappharx/mdn-cli 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 sappharx/mdn-cli 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 sappharx/mdn-cli
[INFO] finished frobbing sappharx/mdn-cli
[INFO] frobbed toml for sappharx/mdn-cli written to work/ex/beta-1.37-6/sources/1.36.0/gh/sappharx/mdn-cli/Cargo.toml
[INFO] started frobbing sappharx/mdn-cli
[INFO] finished frobbing sappharx/mdn-cli
[INFO] frobbed toml for sappharx/mdn-cli written to work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/sappharx/mdn-cli/Cargo.toml
[INFO] crate sappharx/mdn-cli 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] [stderr]     Blocking waiting for file lock on package cache
[INFO] testing sappharx/mdn-cli against beta-2019-07-23 for beta-1.37-6
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-3/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/sappharx/mdn-cli:/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-2019-07-23" "build" "--frozen"`
[INFO] [stdout] b3efb7a9c16b863a7204b252a7fe08193e141c6c1f48923617ae11d66fe22ef3
[INFO] running `"docker" "start" "-a" "b3efb7a9c16b863a7204b252a7fe08193e141c6c1f48923617ae11d66fe22ef3"`
[INFO] [stderr]    Compiling mdn-cli v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused variable: `open_command`
[INFO] [stderr]  --> src/main.rs:5:9
[INFO] [stderr]   |
[INFO] [stderr] 5 |     let open_command = Command::new("open")
[INFO] [stderr]   |         ^^^^^^^^^^^^ help: consider prefixing with an underscore: `_open_command`
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.60s
[INFO] running `"docker" "inspect" "b3efb7a9c16b863a7204b252a7fe08193e141c6c1f48923617ae11d66fe22ef3"`
[INFO] running `"docker" "rm" "-f" "b3efb7a9c16b863a7204b252a7fe08193e141c6c1f48923617ae11d66fe22ef3"`
[INFO] [stdout] b3efb7a9c16b863a7204b252a7fe08193e141c6c1f48923617ae11d66fe22ef3
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-3/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/sappharx/mdn-cli:/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-2019-07-23" "test" "--frozen" "--no-run"`
[INFO] [stdout] 259ae7789fd9809ef0e585a8aa9a40868d42116391811d24f857f9cc714408d2
[INFO] running `"docker" "start" "-a" "259ae7789fd9809ef0e585a8aa9a40868d42116391811d24f857f9cc714408d2"`
[INFO] [stderr]    Compiling mdn-cli v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused variable: `open_command`
[INFO] [stderr]  --> src/main.rs:5:9
[INFO] [stderr]   |
[INFO] [stderr] 5 |     let open_command = Command::new("open")
[INFO] [stderr]   |         ^^^^^^^^^^^^ help: consider prefixing with an underscore: `_open_command`
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.47s
[INFO] running `"docker" "inspect" "259ae7789fd9809ef0e585a8aa9a40868d42116391811d24f857f9cc714408d2"`
[INFO] running `"docker" "rm" "-f" "259ae7789fd9809ef0e585a8aa9a40868d42116391811d24f857f9cc714408d2"`
[INFO] [stdout] 259ae7789fd9809ef0e585a8aa9a40868d42116391811d24f857f9cc714408d2
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-3/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/sappharx/mdn-cli:/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-2019-07-23" "test" "--frozen"`
[INFO] [stdout] b01a3eb492d01ae6681334da4a94e5f226a8404cfe0adb0dbb3a62d5c2faa4e1
[INFO] running `"docker" "start" "-a" "b01a3eb492d01ae6681334da4a94e5f226a8404cfe0adb0dbb3a62d5c2faa4e1"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/mdn_cli-8ff8b6000f187873
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "b01a3eb492d01ae6681334da4a94e5f226a8404cfe0adb0dbb3a62d5c2faa4e1"`
[INFO] running `"docker" "rm" "-f" "b01a3eb492d01ae6681334da4a94e5f226a8404cfe0adb0dbb3a62d5c2faa4e1"`
[INFO] [stdout] b01a3eb492d01ae6681334da4a94e5f226a8404cfe0adb0dbb3a62d5c2faa4e1