[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/16b28985ab2d47d1d7e654b1321d3a95be23ac59 against try#7014e13d5becc920d4bea3cd87942c8a13d359bf+rustflags=-Dtail_expr_drop_order for pr-129864
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLeeSmet%2Fvblock" "/workspace/builds/worker-7-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/LeeSmet/vblock on toolchain 7014e13d5becc920d4bea3cd87942c8a13d359bf
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+7014e13d5becc920d4bea3cd87942c8a13d359bf" "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-7-tc2/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" "+7014e13d5becc920d4bea3cd87942c8a13d359bf" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:ceb6ea022f8a89cebbe621bb4987e73a935bd40dfbb726f832cfff4742a5b95a" "/opt/rustwide/cargo-home/bin/cargo" "+7014e13d5becc920d4bea3cd87942c8a13d359bf" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8d50209e87249ea3843f9d0c32a0b0e5408b64f89d6616e47f7d49c26d0b2986
[INFO] running `Command { std: "docker" "start" "-a" "8d50209e87249ea3843f9d0c32a0b0e5408b64f89d6616e47f7d49c26d0b2986", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8d50209e87249ea3843f9d0c32a0b0e5408b64f89d6616e47f7d49c26d0b2986", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8d50209e87249ea3843f9d0c32a0b0e5408b64f89d6616e47f7d49c26d0b2986", kill_on_drop: false }`
[INFO] [stdout] 8d50209e87249ea3843f9d0c32a0b0e5408b64f89d6616e47f7d49c26d0b2986
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/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 -Dtail_expr_drop_order" "-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:ceb6ea022f8a89cebbe621bb4987e73a935bd40dfbb726f832cfff4742a5b95a" "/opt/rustwide/cargo-home/bin/cargo" "+7014e13d5becc920d4bea3cd87942c8a13d359bf" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7e2af6ec68a2e6ae48304fdcff7fc4a0f8a83e7a13c0b56bdbfff37659ba94e7
[INFO] running `Command { std: "docker" "start" "-a" "7e2af6ec68a2e6ae48304fdcff7fc4a0f8a83e7a13c0b56bdbfff37659ba94e7", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling memchr v2.6.4
[INFO] [stderr]    Compiling glob v0.3.1
[INFO] [stderr]    Compiling ident_case v1.0.1
[INFO] [stderr]    Compiling futures-core v0.3.29
[INFO] [stderr]    Compiling quote v1.0.33
[INFO] [stderr]    Compiling fnv v1.0.7
[INFO] [stderr]    Compiling rustix v0.38.28
[INFO] [stderr]    Compiling libc v0.2.151
[INFO] [stderr]    Compiling strsim v0.10.0
[INFO] [stderr]    Compiling syn v2.0.41
[INFO] [stderr]    Compiling slab v0.4.9
[INFO] [stderr]    Compiling clang-sys v1.6.1
[INFO] [stderr]    Compiling futures-channel v0.3.29
[INFO] [stderr]    Compiling futures-task v0.3.29
[INFO] [stderr]    Compiling regex-syntax v0.8.2
[INFO] [stderr]    Compiling bitflags v2.4.1
[INFO] [stderr]    Compiling aho-corasick v1.1.2
[INFO] [stderr]    Compiling minimal-lexical v0.2.1
[INFO] [stderr]    Compiling linux-raw-sys v0.4.12
[INFO] [stderr]    Compiling libloading v0.7.4
[INFO] [stderr]    Compiling nom v7.1.3
[INFO] [stderr]    Compiling futures-util v0.3.29
[INFO] [stderr]     Checking futures-sink v0.3.29
[INFO] [stderr]    Compiling bindgen v0.64.0
[INFO] [stderr]    Compiling home v0.5.9
[INFO] [stderr]    Compiling anyhow v1.0.75
[INFO] [stderr]    Compiling peeking_take_while v0.1.2
[INFO] [stderr]    Compiling regex-automata v0.4.3
[INFO] [stderr]    Compiling cexpr v0.6.0
[INFO] [stderr]    Compiling bitflags v1.3.2
[INFO] [stderr]     Checking futures-io v0.3.29
[INFO] [stderr]    Compiling rustc-hash v1.1.0
[INFO] [stderr]    Compiling which v4.4.2
[INFO] [stderr]    Compiling log v0.4.20
[INFO] [stderr]    Compiling serde v1.0.193
[INFO] [stderr]    Compiling shlex v1.2.0
[INFO] [stderr]    Compiling lazycell v1.3.0
[INFO] [stderr]     Checking pin-project-lite v0.2.13
[INFO] [stderr]     Checking anstyle-parse v0.2.3
[INFO] [stderr]     Checking crypto-common v0.1.6
[INFO] [stderr]     Checking inout v0.1.3
[INFO] [stderr]    Compiling darling_core v0.14.4
[INFO] [stderr]    Compiling io-uring v0.6.2
[INFO] [stderr]    Compiling pkg-config v0.3.27
[INFO] [stderr]    Compiling thiserror v1.0.51
[INFO] [stderr]     Checking anstyle-query v1.0.2
[INFO] [stderr]     Checking anstream v0.6.5
[INFO] [stderr]    Compiling futures-macro v0.3.29
[INFO] [stderr]    Compiling serde_derive v1.0.193
[INFO] [stderr]    Compiling thiserror-impl v1.0.51
[INFO] [stderr]    Compiling regex v1.10.2
[INFO] [stderr]     Checking cipher v0.4.4
[INFO] [stderr]     Checking ryu v1.0.16
[INFO] [stderr]     Checking itoa v1.0.10
[INFO] [stderr]    Compiling clap_derive v4.4.7
[INFO] [stderr]    Compiling darling_macro v0.14.4
[INFO] [stderr]     Checking clap_builder v4.4.11
[INFO] [stderr]     Checking cpufeatures v0.2.12
[INFO] [stderr]    Compiling darling v0.14.4
[INFO] [stderr]     Checking byteorder v1.5.0
[INFO] [stderr]    Compiling derive_builder_core v0.12.0
[INFO] [stderr]     Checking bitmaps v3.2.0
[INFO] [stderr]     Checking nix v0.27.1
[INFO] [stderr]     Checking xts-mode v0.5.1
[INFO] [stderr]     Checking aes v0.8.4
[INFO] [stderr]    Compiling derive_builder_macro v0.12.0
[INFO] [stderr]     Checking derive_builder v0.12.0
[INFO] [stderr]     Checking clap v4.4.11
[INFO] [stderr]     Checking futures-executor v0.3.29
[INFO] [stderr]     Checking futures v0.3.29
[INFO] [stderr]    Compiling libublk v0.2.1
[INFO] [stderr]     Checking serde_json v1.0.108
[INFO] [stderr]     Checking vblock v0.1.0 (/opt/rustwide/workdir)
[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_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_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_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_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_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_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_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_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: 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: 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: 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 11.32s
[INFO] running `Command { std: "docker" "inspect" "7e2af6ec68a2e6ae48304fdcff7fc4a0f8a83e7a13c0b56bdbfff37659ba94e7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7e2af6ec68a2e6ae48304fdcff7fc4a0f8a83e7a13c0b56bdbfff37659ba94e7", kill_on_drop: false }`
[INFO] [stdout] 7e2af6ec68a2e6ae48304fdcff7fc4a0f8a83e7a13c0b56bdbfff37659ba94e7