[INFO] cloning repository https://github.com/LeeSmet/vblock
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/LeeSmet/vblock" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLeeSmet%2Fvblock", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLeeSmet%2Fvblock'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 16b28985ab2d47d1d7e654b1321d3a95be23ac59
[INFO] checking LeeSmet/vblock against master#1f12b9b0fdbe735968ac002792a720f0ba4faca6 for crater-rollup-uwu
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLeeSmet%2Fvblock" "/workspace/builds/worker-6-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/LeeSmet/vblock on toolchain 1f12b9b0fdbe735968ac002792a720f0ba4faca6
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/LeeSmet/vblock
[INFO] finished tweaking git repo https://github.com/LeeSmet/vblock
[INFO] tweaked toml for git repo https://github.com/LeeSmet/vblock written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/LeeSmet/vblock already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
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[INFO] [stderr]   Downloaded io-uring v0.6.2
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/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" "RUSTDOCFLAGS=--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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
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[INFO] [stdout] warning: unused import: `collections::HashMap`
[INFO] [stdout]  --> src/main.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 |     collections::HashMap,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `ioctl_none`
[INFO] [stdout]  --> src/kernel.rs:1:11
[INFO] [stdout]   |
[INFO] [stdout] 1 | use nix::{ioctl_none, ioctl_read, ioctl_read_bad, request_code_none};
[INFO] [stdout]   |           ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `collections::HashMap`
[INFO] [stdout]  --> src/main.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 |     collections::HashMap,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `ioctl_none`
[INFO] [stdout]  --> src/kernel.rs:1:11
[INFO] [stdout]   |
[INFO] [stdout] 1 | use nix::{ioctl_none, ioctl_read, ioctl_read_bad, request_code_none};
[INFO] [stdout]   |           ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `BLK_IOCTL_ID` is never used
[INFO] [stdout]  --> src/kernel.rs:4:7
[INFO] [stdout]   |
[INFO] [stdout] 4 | const BLK_IOCTL_ID: u8 = 0x12;
[INFO] [stdout]   |       ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `BLK_IOCTL_ID` is never used
[INFO] [stdout]  --> src/kernel.rs:4:7
[INFO] [stdout]   |
[INFO] [stdout] 4 | const BLK_IOCTL_ID: u8 = 0x12;
[INFO] [stdout]   |       ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `BLK_SSZGET_IOCTL_SEQNO` is never used
[INFO] [stdout]  --> src/kernel.rs:7:7
[INFO] [stdout]   |
[INFO] [stdout] 7 | const BLK_SSZGET_IOCTL_SEQNO: u8 = 104;
[INFO] [stdout]   |       ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `BLK_SSZGET_IOCTL_SEQNO` is never used
[INFO] [stdout]  --> src/kernel.rs:7:7
[INFO] [stdout]   |
[INFO] [stdout] 7 | const BLK_SSZGET_IOCTL_SEQNO: u8 = 104;
[INFO] [stdout]   |       ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `BLK_GETSIZE64_IOCTL_SEQNO` is never used
[INFO] [stdout]  --> src/kernel.rs:9:7
[INFO] [stdout]   |
[INFO] [stdout] 9 | const BLK_GETSIZE64_IOCTL_SEQNO: u8 = 114;
[INFO] [stdout]   |       ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `BLK_GETSIZE64_IOCTL_SEQNO` is never used
[INFO] [stdout]  --> src/kernel.rs:9:7
[INFO] [stdout]   |
[INFO] [stdout] 9 | const BLK_GETSIZE64_IOCTL_SEQNO: u8 = 114;
[INFO] [stdout]   |       ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `BLK_IOMIN_IOCTL_SEQNO` is never used
[INFO] [stdout]   --> src/kernel.rs:11:7
[INFO] [stdout]    |
[INFO] [stdout] 11 | const BLK_IOMIN_IOCTL_SEQNO: u8 = 120;
[INFO] [stdout]    |       ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `BLK_IOMIN_IOCTL_SEQNO` is never used
[INFO] [stdout]   --> src/kernel.rs:11:7
[INFO] [stdout]    |
[INFO] [stdout] 11 | const BLK_IOMIN_IOCTL_SEQNO: u8 = 120;
[INFO] [stdout]    |       ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `BLK_IOOPT_IOCTL_SEQNO` is never used
[INFO] [stdout]   --> src/kernel.rs:13:7
[INFO] [stdout]    |
[INFO] [stdout] 13 | const BLK_IOOPT_IOCTL_SEQNO: u8 = 121;
[INFO] [stdout]    |       ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `BLK_IOOPT_IOCTL_SEQNO` is never used
[INFO] [stdout]   --> src/kernel.rs:13:7
[INFO] [stdout]    |
[INFO] [stdout] 13 | const BLK_IOOPT_IOCTL_SEQNO: u8 = 121;
[INFO] [stdout]    |       ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `BLK_PBSZGET_IOCTL_SEQNO` is never used
[INFO] [stdout]   --> src/kernel.rs:15:7
[INFO] [stdout]    |
[INFO] [stdout] 15 | const BLK_PBSZGET_IOCTL_SEQNO: u8 = 123;
[INFO] [stdout]    |       ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `BLK_PBSZGET_IOCTL_SEQNO` is never used
[INFO] [stdout]   --> src/kernel.rs:15:7
[INFO] [stdout]    |
[INFO] [stdout] 15 | const BLK_PBSZGET_IOCTL_SEQNO: u8 = 123;
[INFO] [stdout]    |       ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Layout` is never constructed
[INFO] [stdout]   --> src/layout.rs:17:12
[INFO] [stdout]    |
[INFO] [stdout] 17 | pub struct Layout {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Layout` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Layout` is never constructed
[INFO] [stdout]   --> src/layout.rs:17:12
[INFO] [stdout]    |
[INFO] [stdout] 17 | pub struct Layout {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Layout` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `UnsupportedDeviceType` is never constructed
[INFO] [stdout]   --> src/layout.rs:34:5
[INFO] [stdout]    |
[INFO] [stdout] 32 | pub enum LayoutError {
[INFO] [stdout]    |          ----------- variant in this enum
[INFO] [stdout] 33 |     /// Not a block device or regular file.
[INFO] [stdout] 34 |     UnsupportedDeviceType,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `LayoutError` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `UnsupportedDeviceType` is never constructed
[INFO] [stdout]   --> src/layout.rs:34:5
[INFO] [stdout]    |
[INFO] [stdout] 32 | pub enum LayoutError {
[INFO] [stdout]    |          ----------- variant in this enum
[INFO] [stdout] 33 |     /// Not a block device or regular file.
[INFO] [stdout] 34 |     UnsupportedDeviceType,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `LayoutError` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/layout.rs:42:12
[INFO] [stdout]    |
[INFO] [stdout] 41 | impl Layout {
[INFO] [stdout]    | ----------- associated function in this implementation
[INFO] [stdout] 42 |     pub fn new(target: &File) -> Result<Layout, LayoutError> {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/layout.rs:42:12
[INFO] [stdout]    |
[INFO] [stdout] 41 | impl Layout {
[INFO] [stdout]    | ----------- associated function in this implementation
[INFO] [stdout] 42 |     pub fn new(target: &File) -> Result<Layout, LayoutError> {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 11 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 11 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 11.20s
[INFO] running `Command { std: "docker" "inspect" "f03e322d937f24dd5ee2533cc91b6c5150cc2558cab0ecae1a1755d076a1e295", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f03e322d937f24dd5ee2533cc91b6c5150cc2558cab0ecae1a1755d076a1e295", kill_on_drop: false }`
[INFO] [stdout] f03e322d937f24dd5ee2533cc91b6c5150cc2558cab0ecae1a1755d076a1e295