Dec 17 19:50:59.979 INFO checking mdaffin/scribe against try#0b8c5828f68d7b2840b81fa51239346dc97fef5a for pr-54252
Dec 17 19:50:59.979 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-54252/worker-1/try#0b8c5828f68d7b2840b81fa51239346dc97fef5a:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-54252/sources/try#0b8c5828f68d7b2840b81fa51239346dc97fef5a/gh/mdaffin/scribe:/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=forbid" "-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" "+0b8c5828f68d7b2840b81fa51239346dc97fef5a-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 17 19:51:00.503 INFO [stdout] 19f880a80fde94e721fc2fa988495a8fb9a91fcb249d5cac0ee5510123ef0964
Dec 17 19:51:00.505 INFO running `"docker" "start" "-a" "19f880a80fde94e721fc2fa988495a8fb9a91fcb249d5cac0ee5510123ef0964"`
Dec 17 19:51:03.036 INFO [stderr]     Checking os_type v2.0.0
Dec 17 19:51:03.036 INFO [stderr]    Compiling structopt-derive v0.2.10
Dec 17 19:51:03.036 INFO [stderr]     Checking simplelog v0.5.2
Dec 17 19:51:04.094 INFO [stderr]     Checking human-panic v1.0.0
Dec 17 19:51:07.902 INFO [stderr]     Checking structopt v0.2.10
Dec 17 19:51:08.280 INFO [stderr]     Checking scribe v0.1.0 (/opt/crater/workdir)
Dec 17 19:51:09.824 INFO [stderr] warning: unused `#[macro_use]` import
Dec 17 19:51:09.825 INFO [stderr]  --> src/main.rs:6:1
Dec 17 19:51:09.825 INFO [stderr]   |
Dec 17 19:51:09.825 INFO [stderr] 6 | #[macro_use]
Dec 17 19:51:09.826 INFO [stderr]   | ^^^^^^^^^^^^
Dec 17 19:51:09.826 INFO [stderr]   |
Dec 17 19:51:09.826 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 17 19:51:09.826 INFO [stderr] 
Dec 17 19:51:09.860 INFO [stderr] warning: unused `#[macro_use]` import
Dec 17 19:51:09.861 INFO [stderr]  --> src/main.rs:6:1
Dec 17 19:51:09.861 INFO [stderr]   |
Dec 17 19:51:09.861 INFO [stderr] 6 | #[macro_use]
Dec 17 19:51:09.862 INFO [stderr]   | ^^^^^^^^^^^^
Dec 17 19:51:09.862 INFO [stderr]   |
Dec 17 19:51:09.862 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 17 19:51:09.862 INFO [stderr] 
Dec 17 19:51:10.343 INFO [stderr] warning: variant is never constructed: `ExternalDrive`
Dec 17 19:51:10.343 INFO [stderr]   --> src/block_dev.rs:49:5
Dec 17 19:51:10.344 INFO [stderr]    |
Dec 17 19:51:10.344 INFO [stderr] 49 |     ExternalDrive,
Dec 17 19:51:10.344 INFO [stderr]    |     ^^^^^^^^^^^^^
Dec 17 19:51:10.344 INFO [stderr]    |
Dec 17 19:51:10.345 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 17 19:51:10.345 INFO [stderr] 
Dec 17 19:51:10.425 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 17 19:51:10.425 INFO [stderr]    --> src/block_dev.rs:367:13
Dec 17 19:51:10.425 INFO [stderr]     |
Dec 17 19:51:10.426 INFO [stderr] 367 |             run_checks(&mut blkdev);
Dec 17 19:51:10.426 INFO [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^^^^
Dec 17 19:51:10.426 INFO [stderr]     |
Dec 17 19:51:10.427 INFO [stderr]     = note: #[warn(unused_must_use)] on by default
Dec 17 19:51:10.427 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 17 19:51:10.427 INFO [stderr] 
Dec 17 19:51:10.481 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 7.66s
Dec 17 19:51:12.035 INFO running `"docker" "inspect" "19f880a80fde94e721fc2fa988495a8fb9a91fcb249d5cac0ee5510123ef0964"`
Dec 17 19:51:12.410 INFO running `"docker" "rm" "-f" "19f880a80fde94e721fc2fa988495a8fb9a91fcb249d5cac0ee5510123ef0964"`
Dec 17 19:51:12.738 INFO [stdout] 19f880a80fde94e721fc2fa988495a8fb9a91fcb249d5cac0ee5510123ef0964