[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/beta-1.38-1/sources/1.37.0/gh/nicofff/rust_fat32"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/nicofff/rust_fat32'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/nicofff/rust_fat32" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/nicofff/rust_fat32"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/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 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 nicofff/rust_fat32 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 nicofff/rust_fat32
[INFO] finished frobbing nicofff/rust_fat32
[INFO] frobbed toml for nicofff/rust_fat32 written to work/ex/beta-1.38-1/sources/1.37.0/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/beta-1.38-1/sources/beta-2019-08-13/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" "+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 nicofff/rust_fat32 against 1.37.0 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-0/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/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=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" "+1.37.0" "build" "--frozen"`
[INFO] [stdout] 9661e1de783795a0f369adfbe0b3452e7025a92cd44eed52090d3c2cffa063ae
[INFO] running `"docker" "start" "-a" "9661e1de783795a0f369adfbe0b3452e7025a92cd44eed52090d3c2cffa063ae"`
[INFO] [stderr]    Compiling fuse v0.3.1
[INFO] [stderr]    Compiling 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]     Finished dev [unoptimized + debuginfo] target(s) in 3.77s
[INFO] running `"docker" "inspect" "9661e1de783795a0f369adfbe0b3452e7025a92cd44eed52090d3c2cffa063ae"`
[INFO] running `"docker" "rm" "-f" "9661e1de783795a0f369adfbe0b3452e7025a92cd44eed52090d3c2cffa063ae"`
[INFO] [stdout] 9661e1de783795a0f369adfbe0b3452e7025a92cd44eed52090d3c2cffa063ae
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-0/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/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=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" "+1.37.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] 246e40f5b246f54f1d086e7d5cc67732d2205ebd8457481befd1a0a4d9eb12d0
[INFO] running `"docker" "start" "-a" "246e40f5b246f54f1d086e7d5cc67732d2205ebd8457481befd1a0a4d9eb12d0"`
[INFO] [stderr]    Compiling 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]     Finished dev [unoptimized + debuginfo] target(s) in 1.12s
[INFO] running `"docker" "inspect" "246e40f5b246f54f1d086e7d5cc67732d2205ebd8457481befd1a0a4d9eb12d0"`
[INFO] running `"docker" "rm" "-f" "246e40f5b246f54f1d086e7d5cc67732d2205ebd8457481befd1a0a4d9eb12d0"`
[INFO] [stdout] 246e40f5b246f54f1d086e7d5cc67732d2205ebd8457481befd1a0a4d9eb12d0
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-0/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/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=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" "+1.37.0" "test" "--frozen"`
[INFO] [stdout] 485fd2305350544e3c98d5fc918aa1c76ef05229181c85425708a8fd308e699e
[INFO] running `"docker" "start" "-a" "485fd2305350544e3c98d5fc918aa1c76ef05229181c85425708a8fd308e699e"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.07s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/rust_fat32-9dfeb2d4f6877397
[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" "485fd2305350544e3c98d5fc918aa1c76ef05229181c85425708a8fd308e699e"`
[INFO] running `"docker" "rm" "-f" "485fd2305350544e3c98d5fc918aa1c76ef05229181c85425708a8fd308e699e"`
[INFO] [stdout] 485fd2305350544e3c98d5fc918aa1c76ef05229181c85425708a8fd308e699e