[INFO] crate ccv 0.1.0 is already in cache
[INFO] checking ccv-0.1.0 against master#2da942f32802c8233a09744024dfbc34431adf65 for pr-66963
[INFO] extracting crate ccv 0.1.0 into /workspace/builds/worker-12/source
[INFO] validating manifest of crates.io crate ccv 0.1.0 on toolchain 2da942f32802c8233a09744024dfbc34431adf65
[INFO] running `"/workspace/cargo-home/bin/cargo" "+2da942f32802c8233a09744024dfbc34431adf65" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate ccv 0.1.0
[INFO] finished tweaking crates.io crate ccv 0.1.0
[INFO] tweaked toml for crates.io crate ccv 0.1.0 written to /workspace/builds/worker-12/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+2da942f32802c8233a09744024dfbc34431adf65" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+2da942f32802c8233a09744024dfbc34431adf65" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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" "+2da942f32802c8233a09744024dfbc34431adf65" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 4aef45a4b7d144a5fc38ec9cd6a437f278c2a4d6c3d98c282cfbab3a33b11f26
[INFO] running `"docker" "start" "-a" "4aef45a4b7d144a5fc38ec9cd6a437f278c2a4d6c3d98c282cfbab3a33b11f26"`
[INFO] [stderr]    Compiling ccv v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: enum is never used: `Depth`
[INFO] [stderr]   --> src/ffi.rs:25:10
[INFO] [stderr]    |
[INFO] [stderr] 25 | pub enum Depth {
[INFO] [stderr]    |          ^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: enum is never used: `Coordinate`
[INFO] [stderr]   --> src/ffi.rs:34:10
[INFO] [stderr]    |
[INFO] [stderr] 34 | pub enum Coordinate {
[INFO] [stderr]    |          ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: enum is never used: `Depth`
[INFO] [stderr]   --> src/ffi.rs:25:10
[INFO] [stderr]    |
[INFO] [stderr] 25 | pub enum Depth {
[INFO] [stderr]    |          ^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: enum is never used: `Coordinate`
[INFO] [stderr]   --> src/ffi.rs:34:10
[INFO] [stderr]    |
[INFO] [stderr] 34 | pub enum Coordinate {
[INFO] [stderr]    |          ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::env::args`
[INFO] [stderr]  --> examples/swtdetect.rs:4:5
[INFO] [stderr]   |
[INFO] [stderr] 4 | use std::env::args;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `file_out`
[INFO] [stderr]   --> examples/swtdetect.rs:14:9
[INFO] [stderr]    |
[INFO] [stderr] 14 |     let file_out = args.next().expect("Expected an output file");
[INFO] [stderr]    |         ^^^^^^^^ help: consider prefixing with an underscore: `_file_out`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.43s
[INFO] running `"docker" "inspect" "4aef45a4b7d144a5fc38ec9cd6a437f278c2a4d6c3d98c282cfbab3a33b11f26"`
[INFO] running `"docker" "rm" "-f" "4aef45a4b7d144a5fc38ec9cd6a437f278c2a4d6c3d98c282cfbab3a33b11f26"`
[INFO] [stdout] 4aef45a4b7d144a5fc38ec9cd6a437f278c2a4d6c3d98c282cfbab3a33b11f26