[INFO] crate sysctl 0.4.0 is already in cache
[INFO] checking sysctl-0.4.0 against try#d27c6c6a469a28343396a8f3ac1c9d403aabda69 for pr-66037
[INFO] extracting crate sysctl 0.4.0 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate sysctl 0.4.0 on toolchain d27c6c6a469a28343396a8f3ac1c9d403aabda69
[INFO] running `"/workspace/cargo-home/bin/cargo" "+d27c6c6a469a28343396a8f3ac1c9d403aabda69" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate sysctl 0.4.0
[INFO] finished tweaking crates.io crate sysctl 0.4.0
[INFO] tweaked toml for crates.io crate sysctl 0.4.0 written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+d27c6c6a469a28343396a8f3ac1c9d403aabda69" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+d27c6c6a469a28343396a8f3ac1c9d403aabda69" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "+d27c6c6a469a28343396a8f3ac1c9d403aabda69" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 4b07578952e55c042e7bd53f834851b83ada4404ab5492e6e576d2eff81bd14d
[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" "4b07578952e55c042e7bd53f834851b83ada4404ab5492e6e576d2eff81bd14d"`
[INFO] [stderr]     Checking sysctl v0.4.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> examples/value.rs:17:15
[INFO] [stderr]    |
[INFO] [stderr] 17 |     let ctl = try!(sysctl::Ctl::new(ctlname));
[INFO] [stderr]    |               ^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> examples/value.rs:18:16
[INFO] [stderr]    |
[INFO] [stderr] 18 |     let desc = try!(ctl.description());
[INFO] [stderr]    |                ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> examples/value.rs:20:15
[INFO] [stderr]    |
[INFO] [stderr] 20 |     let val = try!(ctl.value());
[INFO] [stderr]    |               ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> examples/value_string.rs:18:15
[INFO] [stderr]    |
[INFO] [stderr] 18 |     let ctl = try!(sysctl::Ctl::new(ctlname));
[INFO] [stderr]    |               ^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> examples/value_string.rs:19:23
[INFO] [stderr]    |
[INFO] [stderr] 19 |     let description = try!(ctl.description());
[INFO] [stderr]    |                       ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> examples/value_string.rs:21:22
[INFO] [stderr]    |
[INFO] [stderr] 21 |     let val_string = try!(ctl.value_string());
[INFO] [stderr]    |                      ^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.18s
[INFO] running `"docker" "inspect" "4b07578952e55c042e7bd53f834851b83ada4404ab5492e6e576d2eff81bd14d"`
[INFO] running `"docker" "rm" "-f" "4b07578952e55c042e7bd53f834851b83ada4404ab5492e6e576d2eff81bd14d"`
[INFO] [stdout] 4b07578952e55c042e7bd53f834851b83ada4404ab5492e6e576d2eff81bd14d