[INFO] updating cached repository crhino/simple-fs
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/crhino/simple-fs
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/crhino/simple-fs" "work/ex/beta-1.38-1/sources/1.37.0/gh/crhino/simple-fs"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/crhino/simple-fs'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/crhino/simple-fs" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/crhino/simple-fs"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/crhino/simple-fs'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 8a4636fa9f6fcab9c35f4352a1eb0c29e7120fc8
[INFO] sha for GitHub repo crhino/simple-fs: 8a4636fa9f6fcab9c35f4352a1eb0c29e7120fc8
[INFO] validating manifest of crhino/simple-fs 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 crhino/simple-fs 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 crhino/simple-fs
[INFO] finished frobbing crhino/simple-fs
[INFO] frobbed toml for crhino/simple-fs written to work/ex/beta-1.38-1/sources/1.37.0/gh/crhino/simple-fs/Cargo.toml
[INFO] started frobbing crhino/simple-fs
[INFO] finished frobbing crhino/simple-fs
[INFO] frobbed toml for crhino/simple-fs written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/crhino/simple-fs/Cargo.toml
[INFO] crate crhino/simple-fs 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] [stderr] error: the lock file /mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/crhino/simple-fs/Cargo.lock needs to be updated but --locked was passed to prevent this
[INFO] the lockfile is outdated, regenerating it
[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 crhino/simple-fs 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-3/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/crhino/simple-fs:/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] e48e8bdd2acd7840143accc8e645e8736e88f10b1bea865c64fdbc749cb97936
[INFO] running `"docker" "start" "-a" "e48e8bdd2acd7840143accc8e645e8736e88f10b1bea865c64fdbc749cb97936"`
[INFO] [stderr]    Compiling fuse v0.3.1
[INFO] [stderr]    Compiling simple-fs v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: field is never used: `backing_file`
[INFO] [stderr]  --> src/filesystem.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 |     backing_file: File,
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/main.rs:14:5
[INFO] [stderr]    |
[INFO] [stderr] 14 |     fuse::mount(fs, &mountpoint, &[]);
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_must_use)] on by default
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4.10s
[INFO] running `"docker" "inspect" "e48e8bdd2acd7840143accc8e645e8736e88f10b1bea865c64fdbc749cb97936"`
[INFO] running `"docker" "rm" "-f" "e48e8bdd2acd7840143accc8e645e8736e88f10b1bea865c64fdbc749cb97936"`
[INFO] [stdout] e48e8bdd2acd7840143accc8e645e8736e88f10b1bea865c64fdbc749cb97936
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-3/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/crhino/simple-fs:/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] 0feffab04ca36d64bde910ae4eda31b1b9713274d9398ed149993a20c17d37ff
[INFO] running `"docker" "start" "-a" "0feffab04ca36d64bde910ae4eda31b1b9713274d9398ed149993a20c17d37ff"`
[INFO] [stderr]    Compiling simple-fs v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: field is never used: `backing_file`
[INFO] [stderr]  --> src/filesystem.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 |     backing_file: File,
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/main.rs:14:5
[INFO] [stderr]    |
[INFO] [stderr] 14 |     fuse::mount(fs, &mountpoint, &[]);
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_must_use)] on by default
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.75s
[INFO] running `"docker" "inspect" "0feffab04ca36d64bde910ae4eda31b1b9713274d9398ed149993a20c17d37ff"`
[INFO] running `"docker" "rm" "-f" "0feffab04ca36d64bde910ae4eda31b1b9713274d9398ed149993a20c17d37ff"`
[INFO] [stdout] 0feffab04ca36d64bde910ae4eda31b1b9713274d9398ed149993a20c17d37ff
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-3/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/crhino/simple-fs:/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] 31c810bf8c4b78bd687fc7a1b9fc4b6e15ad5c848fb2b06e587a729dc6b24e14
[INFO] running `"docker" "start" "-a" "31c810bf8c4b78bd687fc7a1b9fc4b6e15ad5c848fb2b06e587a729dc6b24e14"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/simple_fs-f3212b116d7ce9ac
[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" "31c810bf8c4b78bd687fc7a1b9fc4b6e15ad5c848fb2b06e587a729dc6b24e14"`
[INFO] running `"docker" "rm" "-f" "31c810bf8c4b78bd687fc7a1b9fc4b6e15ad5c848fb2b06e587a729dc6b24e14"`
[INFO] [stdout] 31c810bf8c4b78bd687fc7a1b9fc4b6e15ad5c848fb2b06e587a729dc6b24e14