[INFO] crate driver_99bugs_display 0.1.0 is already in cache
[INFO] extracting crate driver_99bugs_display 0.1.0 into work/ex/beta-1.38-1/sources/1.37.0/reg/driver_99bugs_display/0.1.0
[INFO] extracting crate driver_99bugs_display 0.1.0 into work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/driver_99bugs_display/0.1.0
[INFO] validating manifest of driver_99bugs_display-0.1.0 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 driver_99bugs_display-0.1.0 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 driver_99bugs_display-0.1.0
[INFO] finished frobbing driver_99bugs_display-0.1.0
[INFO] frobbed toml for driver_99bugs_display-0.1.0 written to work/ex/beta-1.38-1/sources/1.37.0/reg/driver_99bugs_display/0.1.0/Cargo.toml
[INFO] started frobbing driver_99bugs_display-0.1.0
[INFO] finished frobbing driver_99bugs_display-0.1.0
[INFO] frobbed toml for driver_99bugs_display-0.1.0 written to work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/driver_99bugs_display/0.1.0/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[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 driver_99bugs_display-0.1.0 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-4/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/driver_99bugs_display/0.1.0:/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] 6b7731c7d05f79460852a2e4296fce61d0ea3e85a650f5db55211f2d27fe42e4
[INFO] running `"docker" "start" "-a" "6b7731c7d05f79460852a2e4296fce61d0ea3e85a650f5db55211f2d27fe42e4"`
[INFO] [stderr]    Compiling spidev v0.3.0
[INFO] [stderr]    Compiling driver_99bugs_display v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: constant item is never used: `PANEL_MODE`
[INFO] [stderr]   --> src/lib.rs:22:1
[INFO] [stderr]    |
[INFO] [stderr] 22 | const PANEL_MODE: u8 = 0x02;
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.77s
[INFO] running `"docker" "inspect" "6b7731c7d05f79460852a2e4296fce61d0ea3e85a650f5db55211f2d27fe42e4"`
[INFO] running `"docker" "rm" "-f" "6b7731c7d05f79460852a2e4296fce61d0ea3e85a650f5db55211f2d27fe42e4"`
[INFO] [stdout] 6b7731c7d05f79460852a2e4296fce61d0ea3e85a650f5db55211f2d27fe42e4
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-4/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/driver_99bugs_display/0.1.0:/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" "test" "--frozen" "--no-run"`
[INFO] [stdout] 24b153e8b1329cb477dcafebfa14268926750b9568e65a50ba07e4a12cbeb00e
[INFO] running `"docker" "start" "-a" "24b153e8b1329cb477dcafebfa14268926750b9568e65a50ba07e4a12cbeb00e"`
[INFO] [stderr]    Compiling driver_99bugs_display v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: constant item is never used: `PANEL_MODE`
[INFO] [stderr]   --> src/lib.rs:22:1
[INFO] [stderr]    |
[INFO] [stderr] 22 | const PANEL_MODE: u8 = 0x02;
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.56s
[INFO] running `"docker" "inspect" "24b153e8b1329cb477dcafebfa14268926750b9568e65a50ba07e4a12cbeb00e"`
[INFO] running `"docker" "rm" "-f" "24b153e8b1329cb477dcafebfa14268926750b9568e65a50ba07e4a12cbeb00e"`
[INFO] [stdout] 24b153e8b1329cb477dcafebfa14268926750b9568e65a50ba07e4a12cbeb00e
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-4/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/driver_99bugs_display/0.1.0:/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" "test" "--frozen"`
[INFO] [stdout] 287c84d8aceea1f503582241fa80a6ba8e7f3a3219fbf6ffd1074eae20f0dcb7
[INFO] running `"docker" "start" "-a" "287c84d8aceea1f503582241fa80a6ba8e7f3a3219fbf6ffd1074eae20f0dcb7"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/driver_99bugs_display-9be9c9d827d44331
[INFO] [stderr]    Doc-tests driver_99bugs_display
[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] [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" "287c84d8aceea1f503582241fa80a6ba8e7f3a3219fbf6ffd1074eae20f0dcb7"`
[INFO] running `"docker" "rm" "-f" "287c84d8aceea1f503582241fa80a6ba8e7f3a3219fbf6ffd1074eae20f0dcb7"`
[INFO] [stdout] 287c84d8aceea1f503582241fa80a6ba8e7f3a3219fbf6ffd1074eae20f0dcb7