[INFO] fetching crate nbd-async 0.6.0...
[INFO] checking nbd-async-0.6.0 against eca445e5ae4a6679cc27d3a09106ce245e13a5a6 for pr-162478
[INFO] extracting crate nbd-async 0.6.0 into /workspace/builds/worker-4-tc1/source
[INFO] started tweaking crates.io crate nbd-async 0.6.0
[INFO] finished tweaking crates.io crate nbd-async 0.6.0
[INFO] tweaked toml for crates.io crate nbd-async 0.6.0 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate nbd-async 0.6.0 on toolchain eca445e5ae4a6679cc27d3a09106ce245e13a5a6
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+eca445e5ae4a6679cc27d3a09106ce245e13a5a6" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate nbd-async 0.6.0 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" "+eca445e5ae4a6679cc27d3a09106ce245e13a5a6" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: explicit `package.readme` can be inferred
[INFO] [stderr]   --> Cargo.toml:30:1
[INFO] [stderr]    |
[INFO] [stderr] 30 | readme = "README.md"
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `cargo::manual_readme` is set to `warn` by default
[INFO] [stderr] help: consider removing `package.readme`
[INFO] [stderr] warning: `nbd-async` (manifest) generated 1 warning
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded unicode-ident v1.0.1
[INFO] [stderr]   Downloaded mio v0.8.3
[INFO] [stderr]   Downloaded syn v1.0.96
[INFO] [stderr]   Downloaded nix v0.24.1
[INFO] [stderr]   Downloaded tokio v1.19.2
[INFO] [stderr]   Downloaded async-trait v0.1.56
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,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" "-m" "1610612736" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:8683fc1fc2eb5c9ac98e0d076ab094b2ffac7f99da555d2b6a2e27f346de2ec7" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] 4c540c13a86843bdcac4fffe59507264be53cba075b92de65aeb89025fa1b9c0
[INFO] running `Command { std: "docker" "start" "4c540c13a86843bdcac4fffe59507264be53cba075b92de65aeb89025fa1b9c0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4c540c13a86843bdcac4fffe59507264be53cba075b92de65aeb89025fa1b9c0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-w" "/opt/rustwide/workdir" "--user" "0:0" "4c540c13a86843bdcac4fffe59507264be53cba075b92de65aeb89025fa1b9c0" "/opt/rustwide/cargo-home/bin/cargo" "+eca445e5ae4a6679cc27d3a09106ce245e13a5a6" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4c540c13a86843bdcac4fffe59507264be53cba075b92de65aeb89025fa1b9c0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-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" "-w" "/opt/rustwide/workdir" "--user" "0:0" "4c540c13a86843bdcac4fffe59507264be53cba075b92de65aeb89025fa1b9c0" "/opt/rustwide/cargo-home/bin/cargo" "+eca445e5ae4a6679cc27d3a09106ce245e13a5a6" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] warning: explicit `package.readme` can be inferred
[INFO] [stderr]   --> Cargo.toml:30:1
[INFO] [stderr]    |
[INFO] [stderr] 30 | readme = "README.md"
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `cargo::manual_readme` is set to `warn` by default
[INFO] [stderr] help: consider removing `package.readme`
[INFO] [stderr] warning: `nbd-async` (manifest) generated 1 warning
[INFO] [stderr]    Compiling proc-macro2 v1.0.39
[INFO] [stderr]    Compiling unicode-ident v1.0.1
[INFO] [stderr]    Compiling syn v1.0.96
[INFO] [stderr]    Compiling log v0.4.17
[INFO] [stderr]    Compiling futures-core v0.3.21
[INFO] [stderr]    Compiling futures-task v0.3.21
[INFO] [stderr]    Compiling futures-util v0.3.21
[INFO] [stderr]    Compiling async-trait v0.1.56
[INFO] [stderr]     Checking bytes v1.1.0
[INFO] [stderr]     Checking byteorder v1.4.3
[INFO] [stderr]     Checking num_cpus v1.13.1
[INFO] [stderr]     Checking socket2 v0.4.4
[INFO] [stderr]     Checking nix v0.24.1
[INFO] [stderr]     Checking mio v0.8.3
[INFO] [stderr]    Compiling quote v1.0.18
[INFO] [stderr]    Compiling tokio-macros v1.8.0
[INFO] [stderr]     Checking tokio v1.19.2
[INFO] [stderr]     Checking nbd-async v0.6.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: fields `fua` and `no_hole` are never read
[INFO] [stdout]   --> src/nbd.rs:24:9
[INFO] [stdout]    |
[INFO] [stdout] 22 | pub struct RequestFlags {
[INFO] [stdout]    |            ------------ fields in this struct
[INFO] [stdout] 23 |     /// Force Unit Access flag.
[INFO] [stdout] 24 |     pub fua: bool,
[INFO] [stdout]    |         ^^^
[INFO] [stdout] 25 |     /// No Hole flag.
[INFO] [stdout] 26 |     pub no_hole: bool,
[INFO] [stdout]    |         ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `RequestFlags` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `magic` and `flags` are never read
[INFO] [stdout]   --> src/nbd.rs:31:9
[INFO] [stdout]    |
[INFO] [stdout] 30 | pub struct Request {
[INFO] [stdout]    |            ------- fields in this struct
[INFO] [stdout] 31 |     pub magic: u32,
[INFO] [stdout]    |         ^^^^^
[INFO] [stdout] 32 |     pub command: Command,
[INFO] [stdout] 33 |     pub flags: RequestFlags,
[INFO] [stdout]    |         ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Request` 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: fields `fua` and `no_hole` are never read
[INFO] [stdout]   --> src/nbd.rs:24:9
[INFO] [stdout]    |
[INFO] [stdout] 22 | pub struct RequestFlags {
[INFO] [stdout]    |            ------------ fields in this struct
[INFO] [stdout] 23 |     /// Force Unit Access flag.
[INFO] [stdout] 24 |     pub fua: bool,
[INFO] [stdout]    |         ^^^
[INFO] [stdout] 25 |     /// No Hole flag.
[INFO] [stdout] 26 |     pub no_hole: bool,
[INFO] [stdout]    |         ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `RequestFlags` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `magic` and `flags` are never read
[INFO] [stdout]   --> src/nbd.rs:31:9
[INFO] [stdout]    |
[INFO] [stdout] 30 | pub struct Request {
[INFO] [stdout]    |            ------- fields in this struct
[INFO] [stdout] 31 |     pub magic: u32,
[INFO] [stdout]    |         ^^^^^
[INFO] [stdout] 32 |     pub command: Command,
[INFO] [stdout] 33 |     pub flags: RequestFlags,
[INFO] [stdout]    |         ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Request` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 12.74s
[INFO] running `Command { std: "docker" "inspect" "4c540c13a86843bdcac4fffe59507264be53cba075b92de65aeb89025fa1b9c0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4c540c13a86843bdcac4fffe59507264be53cba075b92de65aeb89025fa1b9c0", kill_on_drop: false }`
[INFO] [stdout] 4c540c13a86843bdcac4fffe59507264be53cba075b92de65aeb89025fa1b9c0
