[INFO] cloning repository https://github.com/nicofff/rust_fat32
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/nicofff/rust_fat32" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnicofff%2Frust_fat32", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnicofff%2Frust_fat32'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 375dbe2e2d5ddcf9530f58bbdc8c0d62b5c7e28f
[INFO] checking nicofff/rust_fat32 against try#d990716b6a1fdde1300748828a9c9e79dfd0b898 for pr-74846
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnicofff%2Frust_fat32" "/workspace/builds/worker-0/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/nicofff/rust_fat32 on toolchain d990716b6a1fdde1300748828a9c9e79dfd0b898
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+d990716b6a1fdde1300748828a9c9e79dfd0b898" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/nicofff/rust_fat32
[INFO] finished tweaking git repo https://github.com/nicofff/rust_fat32
[INFO] tweaked toml for git repo https://github.com/nicofff/rust_fat32 written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate git repo https://github.com/nicofff/rust_fat32 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+d990716b6a1fdde1300748828a9c9e79dfd0b898" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded fuse v0.3.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+d990716b6a1fdde1300748828a9c9e79dfd0b898" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f9848d1f4a7bbc0c3f520d53f5966d4231bf0be8eb46e27151b0d2b38184c8d8
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "f9848d1f4a7bbc0c3f520d53f5966d4231bf0be8eb46e27151b0d2b38184c8d8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f9848d1f4a7bbc0c3f520d53f5966d4231bf0be8eb46e27151b0d2b38184c8d8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f9848d1f4a7bbc0c3f520d53f5966d4231bf0be8eb46e27151b0d2b38184c8d8", kill_on_drop: false }`
[INFO] [stdout] f9848d1f4a7bbc0c3f520d53f5966d4231bf0be8eb46e27151b0d2b38184c8d8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+d990716b6a1fdde1300748828a9c9e79dfd0b898" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 36dcc5ad975239614306fea4a8f468c76350cd8eeca43fc128ceee320506f90f
[INFO] running `Command { std: "docker" "start" "-a" "36dcc5ad975239614306fea4a8f468c76350cd8eeca43fc128ceee320506f90f", kill_on_drop: false }`
[INFO] [stderr]    Compiling pkg-config v0.3.9
[INFO] [stderr]     Checking log v0.3.8
[INFO] [stderr]     Checking thread-scoped v1.0.2
[INFO] [stderr]     Checking byteorder v1.2.1
[INFO] [stderr]     Checking time v0.1.38
[INFO] [stderr]     Checking env_logger v0.4.3
[INFO] [stderr]    Compiling fuse v0.3.1
[INFO] [stderr]     Checking rust_fat32 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field is never read: `subdir`
[INFO] [stdout]   --> src/fatfs.rs:37:2
[INFO] [stdout]    |
[INFO] [stdout] 37 |     subdir:bool,
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `cluster`
[INFO] [stdout]   --> src/fatfs.rs:38:2
[INFO] [stdout]    |
[INFO] [stdout] 38 |     cluster: usize,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `filesize`
[INFO] [stdout]   --> src/fatfs.rs:39:2
[INFO] [stdout]    |
[INFO] [stdout] 39 |     filesize: usize
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `subdir`
[INFO] [stdout]   --> src/fatfs.rs:37:2
[INFO] [stdout]    |
[INFO] [stdout] 37 |     subdir:bool,
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `cluster`
[INFO] [stdout]   --> src/fatfs.rs:38:2
[INFO] [stdout]    |
[INFO] [stdout] 38 |     cluster: usize,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `filesize`
[INFO] [stdout]   --> src/fatfs.rs:39:2
[INFO] [stdout]    |
[INFO] [stdout] 39 |     filesize: usize
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.44s
[INFO] running `Command { std: "docker" "inspect" "36dcc5ad975239614306fea4a8f468c76350cd8eeca43fc128ceee320506f90f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "36dcc5ad975239614306fea4a8f468c76350cd8eeca43fc128ceee320506f90f", kill_on_drop: false }`
[INFO] [stdout] 36dcc5ad975239614306fea4a8f468c76350cd8eeca43fc128ceee320506f90f