[INFO] crate subprocess 0.2.4 is already in cache
[INFO] checking subprocess-0.2.4 against master#209b2be09fcaff937480d1fbbe8b31646e361c7a for pr-70917
[INFO] extracting crate subprocess 0.2.4 into /workspace/builds/worker-2/source
[INFO] validating manifest of crates.io crate subprocess 0.2.4 on toolchain 209b2be09fcaff937480d1fbbe8b31646e361c7a
[INFO] running `"/workspace/cargo-home/bin/cargo" "+209b2be09fcaff937480d1fbbe8b31646e361c7a" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate subprocess 0.2.4
[INFO] finished tweaking crates.io crate subprocess 0.2.4
[INFO] tweaked toml for crates.io crate subprocess 0.2.4 written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate crates.io crate subprocess 0.2.4 already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+209b2be09fcaff937480d1fbbe8b31646e361c7a" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "+209b2be09fcaff937480d1fbbe8b31646e361c7a" "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] 9e88e618a0ae7bd55a54ba7d201e290ba49d90ea3a1fb3621643ef41a3c1c86c
[INFO] running `"docker" "start" "-a" "9e88e618a0ae7bd55a54ba7d201e290ba49d90ea3a1fb3621643ef41a3c1c86c"`
[INFO] [stderr]     Checking subprocess v0.2.4 (/opt/rustwide/workdir)
[INFO] [stderr] warning: use of deprecated item 'std::error::Error::description': use the Display impl or to_string()
[INFO] [stderr]    --> src/communicate.rs:583:20
[INFO] [stderr]     |
[INFO] [stderr] 583 |         self.error.description()
[INFO] [stderr]     |                    ^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary braces around assigned value
[INFO] [stderr]    --> src/tests/builder.rs:349:20
[INFO] [stderr]     |
[INFO] [stderr] 349 |     let pipeline = { Exec::cmd("command with space").arg("arg") | Exec::cmd("wc").arg("-l") };
[INFO] [stderr]     |                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these braces
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_braces)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::error::Error::description': use the Display impl or to_string()
[INFO] [stderr]     --> src/popen.rs:1254:49
[INFO] [stderr]      |
[INFO] [stderr] 1254 |             PopenError::IoError(ref err) => err.description(),
[INFO] [stderr]      |                                                 ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::error::Error::description': use the Display impl or to_string()
[INFO] [stderr]    --> src/communicate.rs:583:20
[INFO] [stderr]     |
[INFO] [stderr] 583 |         self.error.description()
[INFO] [stderr]     |                    ^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::error::Error::description': use the Display impl or to_string()
[INFO] [stderr]     --> src/popen.rs:1254:49
[INFO] [stderr]      |
[INFO] [stderr] 1254 |             PopenError::IoError(ref err) => err.description(),
[INFO] [stderr]      |                                                 ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4.00s
[INFO] running `"docker" "inspect" "9e88e618a0ae7bd55a54ba7d201e290ba49d90ea3a1fb3621643ef41a3c1c86c"`
[INFO] running `"docker" "rm" "-f" "9e88e618a0ae7bd55a54ba7d201e290ba49d90ea3a1fb3621643ef41a3c1c86c"`
[INFO] [stdout] 9e88e618a0ae7bd55a54ba7d201e290ba49d90ea3a1fb3621643ef41a3c1c86c