[INFO] crate fatfs 0.3.2 is already in cache
[INFO] extracting crate fatfs 0.3.2 into work/ex/beta-1.37-6/sources/1.36.0/reg/fatfs/0.3.2
[INFO] extracting crate fatfs 0.3.2 into work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/fatfs/0.3.2
[INFO] validating manifest of fatfs-0.3.2 on toolchain 1.36.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of fatfs-0.3.2 on toolchain beta-2019-07-23
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing fatfs-0.3.2
[INFO] finished frobbing fatfs-0.3.2
[INFO] frobbed toml for fatfs-0.3.2 written to work/ex/beta-1.37-6/sources/1.36.0/reg/fatfs/0.3.2/Cargo.toml
[INFO] started frobbing fatfs-0.3.2
[INFO] finished frobbing fatfs-0.3.2
[INFO] frobbed toml for fatfs-0.3.2 written to work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/fatfs/0.3.2/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing fatfs-0.3.2 against 1.36.0 for beta-1.37-6
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-1/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/reg/fatfs/0.3.2:/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" "+1.36.0" "build" "--frozen"`
[INFO] [stdout] e0fa41de57df465ae133d664a378cfc5368114f3322ece6cc3291c6b1bca6083
[INFO] running `"docker" "start" "-a" "e0fa41de57df465ae133d664a378cfc5368114f3322ece6cc3291c6b1bca6083"`
[INFO] [stderr]    Compiling fatfs v0.3.2 (/opt/crater/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/dir.rs:243:21
[INFO] [stderr]     |
[INFO] [stderr] 243 |                 let mut dir = entry.to_dir();
[INFO] [stderr]     |                     ----^^^
[INFO] [stderr]     |                     |
[INFO] [stderr]     |                     help: remove this `mut`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_mut)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.29s
[INFO] running `"docker" "inspect" "e0fa41de57df465ae133d664a378cfc5368114f3322ece6cc3291c6b1bca6083"`
[INFO] running `"docker" "rm" "-f" "e0fa41de57df465ae133d664a378cfc5368114f3322ece6cc3291c6b1bca6083"`
[INFO] [stdout] e0fa41de57df465ae133d664a378cfc5368114f3322ece6cc3291c6b1bca6083
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-1/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/reg/fatfs/0.3.2:/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" "+1.36.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] 38bdc3d06380ca0d38a2710b25010554dd90af94537a1822634956877c36cc64
[INFO] running `"docker" "start" "-a" "38bdc3d06380ca0d38a2710b25010554dd90af94537a1822634956877c36cc64"`
[INFO] [stderr]    Compiling fscommon v0.1.0
[INFO] [stderr]    Compiling fatfs v0.3.2 (/opt/crater/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/dir.rs:243:21
[INFO] [stderr]     |
[INFO] [stderr] 243 |                 let mut dir = entry.to_dir();
[INFO] [stderr]     |                     ----^^^
[INFO] [stderr]     |                     |
[INFO] [stderr]     |                     help: remove this `mut`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_mut)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 15.41s
[INFO] running `"docker" "inspect" "38bdc3d06380ca0d38a2710b25010554dd90af94537a1822634956877c36cc64"`
[INFO] running `"docker" "rm" "-f" "38bdc3d06380ca0d38a2710b25010554dd90af94537a1822634956877c36cc64"`
[INFO] [stdout] 38bdc3d06380ca0d38a2710b25010554dd90af94537a1822634956877c36cc64
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-1/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/reg/fatfs/0.3.2:/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" "+1.36.0" "test" "--frozen"`
[INFO] [stdout] 85f44918fa4047c7b6fadd0a32e7a22f882e7949efe5a28b7cc4c6d0c0a69d36
[INFO] running `"docker" "start" "-a" "85f44918fa4047c7b6fadd0a32e7a22f882e7949efe5a28b7cc4c6d0c0a69d36"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.09s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/fatfs-c4a828483ec6e8ce
[INFO] [stdout] 
[INFO] [stdout] running 20 tests
[INFO] [stdout] test boot_sector::tests::test_determine_bytes_per_cluster_fat16 ... ok
[INFO] [stdout] test boot_sector::tests::test_determine_bytes_per_cluster_fat32 ... ok
[INFO] [stdout] test boot_sector::tests::test_determine_bytes_per_cluster_fat12 ... ok
[INFO] [stdout] test dir::tests::test_lfn_checksum_overflow ... ok
[INFO] [stdout] test dir::tests::test_generate_short_name_collisions_long ... ok
[INFO] [stdout] test dir::tests::test_generate_short_name ... ok
[INFO] [stdout] test dir::tests::test_short_name_checksum_overflow ... ok
[INFO] [stdout] test dir::tests::test_generate_short_name_collisions_short ... ok
[INFO] [stdout] test boot_sector::tests::test_determine_sectors_per_fat ... ok
[INFO] [stdout] test boot_sector::tests::test_estimate_fat_type ... ok
[INFO] [stdout] test dir_entry::tests::short_name_05_changed_to_e5 ... ok
[INFO] [stdout] test dir::tests::test_split_path ... ok
[INFO] [stdout] test table::tests::test_fat32 ... ok
[INFO] [stdout] test dir_entry::tests::lowercase_short_name ... ok
[INFO] [stdout] test dir_entry::tests::short_name_with_ext ... ok
[INFO] [stdout] test dir_entry::tests::short_name_without_ext ... ok
[INFO] [stdout] test dir_entry::tests::short_name_eq_ignore_case ... ok
[INFO] [stdout] test boot_sector::tests::test_format_boot_sector ... ok
[INFO] [stdout] test table::tests::test_fat12 ... ok
[INFO] [stdout] test table::tests::test_fat16 ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 20 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/crater/target/debug/deps/format-a60a3a772188804f
[INFO] [stdout] 
[INFO] [stdout] running 5 tests
[INFO] [stdout] test test_format_1mb ... ok
[INFO] [stdout] test test_format_8mb_1fat ... ok
[INFO] [stdout] test test_format_50mb ... ok
[INFO] [stderr] error: process didn't exit successfully: `/opt/crater/target/debug/deps/format-a60a3a772188804f` (signal: 9, SIGKILL: kill)
[INFO] running `"docker" "inspect" "85f44918fa4047c7b6fadd0a32e7a22f882e7949efe5a28b7cc4c6d0c0a69d36"`
[INFO] running `"docker" "rm" "-f" "85f44918fa4047c7b6fadd0a32e7a22f882e7949efe5a28b7cc4c6d0c0a69d36"`
[INFO] [stdout] 85f44918fa4047c7b6fadd0a32e7a22f882e7949efe5a28b7cc4c6d0c0a69d36