[INFO] crate carnix 0.10.3 is already in cache
[INFO] checking carnix-0.10.3 against master#9b9d2aff8de4d499b4ba7ca406e000f8d3754ea7 for pr-64564
[INFO] extracting crate carnix 0.10.3 into work/builds/worker-6/source
[INFO] validating manifest of crates.io crate carnix 0.10.3 on toolchain 9b9d2aff8de4d499b4ba7ca406e000f8d3754ea7-alt
[INFO] running `"/mnt/big/crater/work/cargo-home/bin/cargo" "+9b9d2aff8de4d499b4ba7ca406e000f8d3754ea7-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate carnix 0.10.3
[INFO] finished tweaking crates.io crate carnix 0.10.3
[INFO] tweaked toml for crates.io crate carnix 0.10.3 written to work/builds/worker-6/source/Cargo.toml
[INFO] crate crates.io crate carnix 0.10.3 already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/cargo-home/bin/cargo" "+9b9d2aff8de4d499b4ba7ca406e000f8d3754ea7-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/mnt/big/crater/work/builds/worker-6/source:/opt/rustwide/workdir:ro,Z" "-v" "/mnt/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-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" "+9b9d2aff8de4d499b4ba7ca406e000f8d3754ea7-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] cdd70bee1e763e56abe459c8dc3dbb6d8a918c207eef9e896d7450d44002d87a
[INFO] running `"docker" "start" "-a" "cdd70bee1e763e56abe459c8dc3dbb6d8a918c207eef9e896d7450d44002d87a"`
[INFO] [stderr]    Compiling cc v1.0.32
[INFO] [stderr]     Checking tempdir v0.3.7
[INFO] [stderr]     Checking env_logger v0.6.1
[INFO] [stderr]    Compiling backtrace-sys v0.1.28
[INFO] [stderr]     Checking backtrace v0.3.14
[INFO] [stderr]     Checking failure v0.1.5
[INFO] [stderr]     Checking carnix v0.10.3 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused variable: `i`
[INFO] [stderr]    --> src/cfg.rs:154:30
[INFO] [stderr]     |
[INFO] [stderr] 154 |     if let IResult::Done(ref i, ref o) = x {
[INFO] [stderr]     |                              ^ help: consider prefixing with an underscore: `_i`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `i`
[INFO] [stderr]    --> src/cfg.rs:165:30
[INFO] [stderr]     |
[INFO] [stderr] 165 |     if let IResult::Done(ref i, ref o) = x {
[INFO] [stderr]     |                              ^ help: consider prefixing with an underscore: `_i`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `i`
[INFO] [stderr]    --> src/cfg.rs:154:30
[INFO] [stderr]     |
[INFO] [stderr] 154 |     if let IResult::Done(ref i, ref o) = x {
[INFO] [stderr]     |                              ^ help: consider prefixing with an underscore: `_i`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `i`
[INFO] [stderr]    --> src/cfg.rs:165:30
[INFO] [stderr]     |
[INFO] [stderr] 165 |     if let IResult::Done(ref i, ref o) = x {
[INFO] [stderr]     |                              ^ help: consider prefixing with an underscore: `_i`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 21.23s
[INFO] running `"docker" "inspect" "cdd70bee1e763e56abe459c8dc3dbb6d8a918c207eef9e896d7450d44002d87a"`
[INFO] running `"docker" "rm" "-f" "cdd70bee1e763e56abe459c8dc3dbb6d8a918c207eef9e896d7450d44002d87a"`
[INFO] [stdout] cdd70bee1e763e56abe459c8dc3dbb6d8a918c207eef9e896d7450d44002d87a