[INFO] updating cached repository nicofff/rust_fat32
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/nicofff/rust_fat32
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/nicofff/rust_fat32" "work/ex/pr-63247/sources/master#452087b4bf18cece2d52d7cd8c9147195e5404bf/gh/nicofff/rust_fat32"`
[INFO] [stderr] Cloning into 'work/ex/pr-63247/sources/master#452087b4bf18cece2d52d7cd8c9147195e5404bf/gh/nicofff/rust_fat32'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/nicofff/rust_fat32" "work/ex/pr-63247/sources/try#757dacae0a9f1b46b3ab58a1f1232332e8fc7dab/gh/nicofff/rust_fat32"`
[INFO] [stderr] Cloning into 'work/ex/pr-63247/sources/try#757dacae0a9f1b46b3ab58a1f1232332e8fc7dab/gh/nicofff/rust_fat32'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 375dbe2e2d5ddcf9530f58bbdc8c0d62b5c7e28f
[INFO] sha for GitHub repo nicofff/rust_fat32: 375dbe2e2d5ddcf9530f58bbdc8c0d62b5c7e28f
[INFO] validating manifest of nicofff/rust_fat32 on toolchain master#452087b4bf18cece2d52d7cd8c9147195e5404bf
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+452087b4bf18cece2d52d7cd8c9147195e5404bf-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of nicofff/rust_fat32 on toolchain try#757dacae0a9f1b46b3ab58a1f1232332e8fc7dab
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+757dacae0a9f1b46b3ab58a1f1232332e8fc7dab-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing nicofff/rust_fat32
[INFO] finished frobbing nicofff/rust_fat32
[INFO] frobbed toml for nicofff/rust_fat32 written to work/ex/pr-63247/sources/master#452087b4bf18cece2d52d7cd8c9147195e5404bf/gh/nicofff/rust_fat32/Cargo.toml
[INFO] started frobbing nicofff/rust_fat32
[INFO] finished frobbing nicofff/rust_fat32
[INFO] frobbed toml for nicofff/rust_fat32 written to work/ex/pr-63247/sources/try#757dacae0a9f1b46b3ab58a1f1232332e8fc7dab/gh/nicofff/rust_fat32/Cargo.toml
[INFO] crate nicofff/rust_fat32 already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+452087b4bf18cece2d52d7cd8c9147195e5404bf-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+757dacae0a9f1b46b3ab58a1f1232332e8fc7dab-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking nicofff/rust_fat32 against master#452087b4bf18cece2d52d7cd8c9147195e5404bf for pr-63247
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-63247/worker-3/master#452087b4bf18cece2d52d7cd8c9147195e5404bf:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-63247/sources/master#452087b4bf18cece2d52d7cd8c9147195e5404bf/gh/nicofff/rust_fat32:/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" "+452087b4bf18cece2d52d7cd8c9147195e5404bf-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 0d91431dae1e8ca8b259387f56f36283d9b953a6d8f65d083584907e94a45e9d
[INFO] running `"docker" "start" "-a" "0d91431dae1e8ca8b259387f56f36283d9b953a6d8f65d083584907e94a45e9d"`
[INFO] [stderr]    Compiling fuse v0.3.1
[INFO] [stderr]     Checking env_logger v0.4.3
[INFO] [stderr]     Checking rust_fat32 v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: field is never used: `subdir`
[INFO] [stderr]   --> src/fatfs.rs:37:2
[INFO] [stderr]    |
[INFO] [stderr] 37 |     subdir:bool,
[INFO] [stderr]    |     ^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `cluster`
[INFO] [stderr]   --> src/fatfs.rs:38:2
[INFO] [stderr]    |
[INFO] [stderr] 38 |     cluster: usize,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `filesize`
[INFO] [stderr]   --> src/fatfs.rs:39:2
[INFO] [stderr]    |
[INFO] [stderr] 39 |     filesize: usize
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `HelloFS`
[INFO] [stderr]   --> src/main.rs:55:1
[INFO] [stderr]    |
[INFO] [stderr] 55 | struct HelloFS;
[INFO] [stderr]    | ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `subdir`
[INFO] [stderr]   --> src/fatfs.rs:37:2
[INFO] [stderr]    |
[INFO] [stderr] 37 |     subdir:bool,
[INFO] [stderr]    |     ^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `cluster`
[INFO] [stderr]   --> src/fatfs.rs:38:2
[INFO] [stderr]    |
[INFO] [stderr] 38 |     cluster: usize,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `filesize`
[INFO] [stderr]   --> src/fatfs.rs:39:2
[INFO] [stderr]    |
[INFO] [stderr] 39 |     filesize: usize
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `HelloFS`
[INFO] [stderr]   --> src/main.rs:55:1
[INFO] [stderr]    |
[INFO] [stderr] 55 | struct HelloFS;
[INFO] [stderr]    | ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.38s
[INFO] running `"docker" "inspect" "0d91431dae1e8ca8b259387f56f36283d9b953a6d8f65d083584907e94a45e9d"`
[INFO] running `"docker" "rm" "-f" "0d91431dae1e8ca8b259387f56f36283d9b953a6d8f65d083584907e94a45e9d"`
[INFO] [stdout] 0d91431dae1e8ca8b259387f56f36283d9b953a6d8f65d083584907e94a45e9d