[INFO] fetching crate dfu 0.4.2...
[INFO] checking dfu-0.4.2 against eca445e5ae4a6679cc27d3a09106ce245e13a5a6 for pr-162478
[INFO] extracting crate dfu 0.4.2 into /workspace/builds/worker-1-tc1/source
[INFO] started tweaking crates.io crate dfu 0.4.2
[INFO] finished tweaking crates.io crate dfu 0.4.2
[INFO] tweaked toml for crates.io crate dfu 0.4.2 written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate dfu 0.4.2 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] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+eca445e5ae4a6679cc27d3a09106ce245e13a5a6" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 19 packages to highest compatible versions
[INFO] [stderr]       Adding bitflags v1.2.1 (available: v1.3.2)
[INFO] [stderr]       Adding nix v0.20.2 (available: v0.31.3)
[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]  Downloading crates ...
[INFO] [stderr]   Downloaded usbapi v0.4.2
[INFO] [stderr]   Downloaded sysfs-serde v0.2.3
[INFO] [stderr]   Downloaded nix v0.20.2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] a4d96548720643d369ded429824d8a75ee3563a4eff49f1f16b54d60358c072f
[INFO] running `Command { std: "docker" "start" "a4d96548720643d369ded429824d8a75ee3563a4eff49f1f16b54d60358c072f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a4d96548720643d369ded429824d8a75ee3563a4eff49f1f16b54d60358c072f", 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" "a4d96548720643d369ded429824d8a75ee3563a4eff49f1f16b54d60358c072f" "/opt/rustwide/cargo-home/bin/cargo" "+eca445e5ae4a6679cc27d3a09106ce245e13a5a6" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a4d96548720643d369ded429824d8a75ee3563a4eff49f1f16b54d60358c072f", 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" "a4d96548720643d369ded429824d8a75ee3563a4eff49f1f16b54d60358c072f" "/opt/rustwide/cargo-home/bin/cargo" "+eca445e5ae4a6679cc27d3a09106ce245e13a5a6" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.189
[INFO] [stderr]    Compiling memoffset v0.6.5
[INFO] [stderr]     Checking sysfs-serde v0.2.3
[INFO] [stderr]     Checking nix v0.20.2
[INFO] [stderr]     Checking usbapi v0.4.2
[INFO] [stderr]     Checking dfu v0.4.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::slice::Iter`
[INFO] [stdout]  --> src/core.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | use std::slice::Iter;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/core.rs:162:13
[INFO] [stdout]     |
[INFO] [stdout] 162 |         let mut usb =
[INFO] [stdout]     |             ----^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::slice::Iter`
[INFO] [stdout]  --> src/core.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | use std::slice::Iter;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `length`, `descriptor_type`, `attributes`, `detach_timeout`, and `dfu_version` are never read
[INFO] [stdout]   --> src/core.rs:72:5
[INFO] [stdout]    |
[INFO] [stdout] 71 | struct DfuDescriptor {
[INFO] [stdout]    |        ------------- fields in this struct
[INFO] [stdout] 72 |     length: u8,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 73 |     descriptor_type: u8,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 74 |     attributes: u8,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout] 75 |     detach_timeout: u16,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^
[INFO] [stdout] 76 |     transfer_size: u16,
[INFO] [stdout] 77 |     dfu_version: u8,
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/core.rs:162:13
[INFO] [stdout]     |
[INFO] [stdout] 162 |         let mut usb =
[INFO] [stdout]     |             ----^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `length`, `descriptor_type`, `attributes`, `detach_timeout`, and `dfu_version` are never read
[INFO] [stdout]   --> src/core.rs:72:5
[INFO] [stdout]    |
[INFO] [stdout] 71 | struct DfuDescriptor {
[INFO] [stdout]    |        ------------- fields in this struct
[INFO] [stdout] 72 |     length: u8,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 73 |     descriptor_type: u8,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 74 |     attributes: u8,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout] 75 |     detach_timeout: u16,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^
[INFO] [stdout] 76 |     transfer_size: u16,
[INFO] [stdout] 77 |     dfu_version: u8,
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 6.39s
[INFO] running `Command { std: "docker" "inspect" "a4d96548720643d369ded429824d8a75ee3563a4eff49f1f16b54d60358c072f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a4d96548720643d369ded429824d8a75ee3563a4eff49f1f16b54d60358c072f", kill_on_drop: false }`
[INFO] [stdout] a4d96548720643d369ded429824d8a75ee3563a4eff49f1f16b54d60358c072f
