[INFO] cloning repository https://github.com/TrecApps/disk_reader
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/TrecApps/disk_reader" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FTrecApps%2Fdisk_reader", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FTrecApps%2Fdisk_reader'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 6b3d375801bdab4b9478c17b07cf9c78a52396fe
[INFO] checking TrecApps/disk_reader against master#3aedcf06b73fc36feeebca3d579e1d2a6c40acc5 for pr-65819
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FTrecApps%2Fdisk_reader" "/workspace/builds/worker-10/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-10/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/TrecApps/disk_reader on toolchain 3aedcf06b73fc36feeebca3d579e1d2a6c40acc5
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3aedcf06b73fc36feeebca3d579e1d2a6c40acc5" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/TrecApps/disk_reader
[INFO] finished tweaking git repo https://github.com/TrecApps/disk_reader
[INFO] tweaked toml for git repo https://github.com/TrecApps/disk_reader written to /workspace/builds/worker-10/source/Cargo.toml
[INFO] crate git repo https://github.com/TrecApps/disk_reader already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3aedcf06b73fc36feeebca3d579e1d2a6c40acc5" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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:c46a2d1a26fb48b37929c74ca49dd9409f2375a0a3bdb8fe07617f3ffccaa889" "/opt/rustwide/cargo-home/bin/cargo" "+3aedcf06b73fc36feeebca3d579e1d2a6c40acc5" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8b7f928e917de9da87dbd5bcc26e27865837f8f3089ab256802266595ecf5682
[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" "8b7f928e917de9da87dbd5bcc26e27865837f8f3089ab256802266595ecf5682", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8b7f928e917de9da87dbd5bcc26e27865837f8f3089ab256802266595ecf5682", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8b7f928e917de9da87dbd5bcc26e27865837f8f3089ab256802266595ecf5682", kill_on_drop: false }`
[INFO] [stdout] 8b7f928e917de9da87dbd5bcc26e27865837f8f3089ab256802266595ecf5682
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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:c46a2d1a26fb48b37929c74ca49dd9409f2375a0a3bdb8fe07617f3ffccaa889" "/opt/rustwide/cargo-home/bin/cargo" "+3aedcf06b73fc36feeebca3d579e1d2a6c40acc5" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9f04b55cac5a2ac343fa6c1e226392c1cb0e3d0ced4f63ef15ce9261d20bd2c1
[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" "9f04b55cac5a2ac343fa6c1e226392c1cb0e3d0ced4f63ef15ce9261d20bd2c1", kill_on_drop: false }`
[INFO] [stderr]     Checking disk_reader v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/disk/mbr.rs:81:13
[INFO] [stdout]    |
[INFO] [stdout] 81 |         let mut signature = u16::from_ne_bytes(buffer);
[INFO] [stdout]    |             ----^^^^^^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `reserved`
[INFO] [stdout]   --> src/disk/ntfs.rs:35:5
[INFO] [stdout]    |
[INFO] [stdout] 35 |     reserved: u32,
[INFO] [stdout]    |     ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `reserved_2`
[INFO] [stdout]   --> src/disk/ntfs.rs:41:5
[INFO] [stdout]    |
[INFO] [stdout] 41 |     reserved_2: [u8;3],
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `oem`
[INFO] [stdout]   --> src/disk/fat.rs:17:5
[INFO] [stdout]    |
[INFO] [stdout] 17 |     oem: [char;8],
[INFO] [stdout]    |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `FatBoot12_16`
[INFO] [stdout]   --> src/disk/fat.rs:32:12
[INFO] [stdout]    |
[INFO] [stdout] 32 | pub struct FatBoot12_16
[INFO] [stdout]    |            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `FatBoot32`
[INFO] [stdout]   --> src/disk/fat.rs:42:12
[INFO] [stdout]    |
[INFO] [stdout] 42 | pub struct FatBoot32
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `SuperblockExt`
[INFO] [stdout]   --> src/disk/ext.rs:45:8
[INFO] [stdout]    |
[INFO] [stdout] 45 | struct SuperblockExt
[INFO] [stdout]    |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/disk/ntfs.rs:53:9
[INFO] [stdout]    |
[INFO] [stdout] 53 |         file.seek(SeekFrom::Start(start));
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/disk/ntfs.rs:55:9
[INFO] [stdout]    |
[INFO] [stdout] 55 |         file.read(&mut buffer);
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/disk/mbr.rs:34:9
[INFO] [stdout]    |
[INFO] [stdout] 34 |         file.seek(SeekFrom::Start(start));
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/disk/mbr.rs:36:9
[INFO] [stdout]    |
[INFO] [stdout] 36 |         file.read(&mut buffer);
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/disk/mbr.rs:75:9
[INFO] [stdout]    |
[INFO] [stdout] 75 |         file.seek(SeekFrom::Start(start + (16 * 4)));
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/disk/mbr.rs:79:9
[INFO] [stdout]    |
[INFO] [stdout] 79 |         file.read(&mut buffer);
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/disk/fat.rs:64:9
[INFO] [stdout]    |
[INFO] [stdout] 64 |         file.seek(SeekFrom::Start(start));
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/disk/fat.rs:66:9
[INFO] [stdout]    |
[INFO] [stdout] 66 |         file.read(&mut buffer);
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/disk/ext.rs:71:9
[INFO] [stdout]    |
[INFO] [stdout] 71 |         file.seek(SeekFrom::Start(start));
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/disk/ext.rs:73:9
[INFO] [stdout]    |
[INFO] [stdout] 73 |         file.read(&mut buffer);
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 17 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/disk/mbr.rs:81:13
[INFO] [stdout]    |
[INFO] [stdout] 81 |         let mut signature = u16::from_ne_bytes(buffer);
[INFO] [stdout]    |             ----^^^^^^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `reserved`
[INFO] [stdout]   --> src/disk/ntfs.rs:35:5
[INFO] [stdout]    |
[INFO] [stdout] 35 |     reserved: u32,
[INFO] [stdout]    |     ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `reserved_2`
[INFO] [stdout]   --> src/disk/ntfs.rs:41:5
[INFO] [stdout]    |
[INFO] [stdout] 41 |     reserved_2: [u8;3],
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `oem`
[INFO] [stdout]   --> src/disk/fat.rs:17:5
[INFO] [stdout]    |
[INFO] [stdout] 17 |     oem: [char;8],
[INFO] [stdout]    |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `FatBoot12_16`
[INFO] [stdout]   --> src/disk/fat.rs:32:12
[INFO] [stdout]    |
[INFO] [stdout] 32 | pub struct FatBoot12_16
[INFO] [stdout]    |            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `FatBoot32`
[INFO] [stdout]   --> src/disk/fat.rs:42:12
[INFO] [stdout]    |
[INFO] [stdout] 42 | pub struct FatBoot32
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `SuperblockExt`
[INFO] [stdout]   --> src/disk/ext.rs:45:8
[INFO] [stdout]    |
[INFO] [stdout] 45 | struct SuperblockExt
[INFO] [stdout]    |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/disk/ntfs.rs:53:9
[INFO] [stdout]    |
[INFO] [stdout] 53 |         file.seek(SeekFrom::Start(start));
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/disk/ntfs.rs:55:9
[INFO] [stdout]    |
[INFO] [stdout] 55 |         file.read(&mut buffer);
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/disk/mbr.rs:34:9
[INFO] [stdout]    |
[INFO] [stdout] 34 |         file.seek(SeekFrom::Start(start));
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/disk/mbr.rs:36:9
[INFO] [stdout]    |
[INFO] [stdout] 36 |         file.read(&mut buffer);
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/disk/mbr.rs:75:9
[INFO] [stdout]    |
[INFO] [stdout] 75 |         file.seek(SeekFrom::Start(start + (16 * 4)));
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/disk/mbr.rs:79:9
[INFO] [stdout]    |
[INFO] [stdout] 79 |         file.read(&mut buffer);
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/disk/fat.rs:64:9
[INFO] [stdout]    |
[INFO] [stdout] 64 |         file.seek(SeekFrom::Start(start));
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/disk/fat.rs:66:9
[INFO] [stdout]    |
[INFO] [stdout] 66 |         file.read(&mut buffer);
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/disk/ext.rs:71:9
[INFO] [stdout]    |
[INFO] [stdout] 71 |         file.seek(SeekFrom::Start(start));
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/disk/ext.rs:73:9
[INFO] [stdout]    |
[INFO] [stdout] 73 |         file.read(&mut buffer);
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 17 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.80s
[INFO] running `Command { std: "docker" "inspect" "9f04b55cac5a2ac343fa6c1e226392c1cb0e3d0ced4f63ef15ce9261d20bd2c1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9f04b55cac5a2ac343fa6c1e226392c1cb0e3d0ced4f63ef15ce9261d20bd2c1", kill_on_drop: false }`
[INFO] [stdout] 9f04b55cac5a2ac343fa6c1e226392c1cb0e3d0ced4f63ef15ce9261d20bd2c1