[INFO] fetching crate industrial-io 0.1.0...
[INFO] checking industrial-io-0.1.0 against master#2748a9fd93dd1a00a4521f4f16de5befbf77f6cd for pr-62262-1
[INFO] extracting crate industrial-io 0.1.0 into /workspace/builds/worker-8/source
[INFO] validating manifest of crates.io crate industrial-io 0.1.0 on toolchain 2748a9fd93dd1a00a4521f4f16de5befbf77f6cd
[INFO] running `"/workspace/cargo-home/bin/cargo" "+2748a9fd93dd1a00a4521f4f16de5befbf77f6cd" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate industrial-io 0.1.0
[INFO] finished tweaking crates.io crate industrial-io 0.1.0
[INFO] tweaked toml for crates.io crate industrial-io 0.1.0 written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+2748a9fd93dd1a00a4521f4f16de5befbf77f6cd" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+2748a9fd93dd1a00a4521f4f16de5befbf77f6cd" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+2748a9fd93dd1a00a4521f4f16de5befbf77f6cd" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 4a9595078a4f5147609ddabacadd00f27be42a86b24e53bfd80d7aedf910d8a8
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `"docker" "start" "-a" "4a9595078a4f5147609ddabacadd00f27be42a86b24e53bfd80d7aedf910d8a8"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling libiio-sys v0.1.0
[INFO] [stderr]     Checking schedule_recv v0.1.0
[INFO] [stderr]     Checking industrial-io v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused import: `errors::*`
[INFO] [stderr]   --> src/context.rs:22:5
[INFO] [stderr]    |
[INFO] [stderr] 22 | use errors::*;
[INFO] [stderr]    |     ^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `device::*`
[INFO] [stderr]   --> src/context.rs:23:5
[INFO] [stderr]    |
[INFO] [stderr] 23 | use device::*;
[INFO] [stderr]    |     ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `CStr`
[INFO] [stderr]   --> src/device.rs:13:25
[INFO] [stderr]    |
[INFO] [stderr] 13 | use std::ffi::{CString, CStr};
[INFO] [stderr]    |                         ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `errors::*`
[INFO] [stderr]   --> src/device.rs:21:5
[INFO] [stderr]    |
[INFO] [stderr] 21 | use errors::*;
[INFO] [stderr]    |     ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `channel::*`
[INFO] [stderr]   --> src/device.rs:22:5
[INFO] [stderr]    |
[INFO] [stderr] 22 | use channel::*;
[INFO] [stderr]    |     ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `CStr`
[INFO] [stderr]   --> src/channel.rs:13:25
[INFO] [stderr]    |
[INFO] [stderr] 13 | use std::ffi::{CString, CStr};
[INFO] [stderr]    |                         ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `errors::*`
[INFO] [stderr]   --> src/context.rs:22:5
[INFO] [stderr]    |
[INFO] [stderr] 22 | use errors::*;
[INFO] [stderr]    |     ^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `device::*`
[INFO] [stderr]   --> src/context.rs:23:5
[INFO] [stderr]    |
[INFO] [stderr] 23 | use device::*;
[INFO] [stderr]    |     ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `CStr`
[INFO] [stderr]   --> src/device.rs:13:25
[INFO] [stderr]    |
[INFO] [stderr] 13 | use std::ffi::{CString, CStr};
[INFO] [stderr]    |                         ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `errors::*`
[INFO] [stderr]   --> src/device.rs:21:5
[INFO] [stderr]    |
[INFO] [stderr] 21 | use errors::*;
[INFO] [stderr]    |     ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `channel::*`
[INFO] [stderr]   --> src/device.rs:22:5
[INFO] [stderr]    |
[INFO] [stderr] 22 | use channel::*;
[INFO] [stderr]    |     ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `CStr`
[INFO] [stderr]   --> src/channel.rs:13:25
[INFO] [stderr]    |
[INFO] [stderr] 13 | use std::ffi::{CString, CStr};
[INFO] [stderr]    |                         ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> examples/iio_free_scan.rs:48:9
[INFO] [stderr]    |
[INFO] [stderr] 48 |     for mut chan in dev.channels() {
[INFO] [stderr]    |         ----^^^^
[INFO] [stderr]    |         |
[INFO] [stderr]    |         help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.66s
[INFO] running `"docker" "inspect" "4a9595078a4f5147609ddabacadd00f27be42a86b24e53bfd80d7aedf910d8a8"`
[INFO] running `"docker" "rm" "-f" "4a9595078a4f5147609ddabacadd00f27be42a86b24e53bfd80d7aedf910d8a8"`
[INFO] [stdout] 4a9595078a4f5147609ddabacadd00f27be42a86b24e53bfd80d7aedf910d8a8