[INFO] crate flate2 1.0.13 is already in cache
[INFO] checking flate2-1.0.13 against try#d27c6c6a469a28343396a8f3ac1c9d403aabda69 for pr-66037
[INFO] extracting crate flate2 1.0.13 into /workspace/builds/worker-1/source
[INFO] validating manifest of crates.io crate flate2 1.0.13 on toolchain d27c6c6a469a28343396a8f3ac1c9d403aabda69
[INFO] running `"/workspace/cargo-home/bin/cargo" "+d27c6c6a469a28343396a8f3ac1c9d403aabda69" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate flate2 1.0.13
[INFO] finished tweaking crates.io crate flate2 1.0.13
[INFO] tweaked toml for crates.io crate flate2 1.0.13 written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] crate crates.io crate flate2 1.0.13 already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+d27c6c6a469a28343396a8f3ac1c9d403aabda69" "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-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] ff61c107c76b3c08fd0c1fcc8d4289a55440b76e6ea23c8282835680d6daf54d
[INFO] running `"docker" "start" "-a" "ff61c107c76b3c08fd0c1fcc8d4289a55440b76e6ea23c8282835680d6daf54d"`
[INFO] [stderr]     Checking flate2 v1.0.13 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking tokio-io v0.1.12
[INFO] [stderr]     Checking quickcheck v0.9.0
[INFO] [stderr]     Checking tokio-threadpool v0.1.16
[INFO] [stderr] warning: use of deprecated item 'std::error::Error::description': use the Display impl or to_string()
[INFO] [stderr]    --> src/mem.rs:487:14
[INFO] [stderr]     |
[INFO] [stderr] 487 |         self.description().fmt(f)
[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/mem.rs:505:14
[INFO] [stderr]     |
[INFO] [stderr] 505 |         self.description().fmt(f)
[INFO] [stderr]     |              ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Checking tokio-reactor v0.1.10
[INFO] [stderr]     Checking tokio-tcp v0.1.3
[INFO] [stderr] error: use of deprecated item 'std::error::Error::description': use the Display impl or to_string()
[INFO] [stderr]    --> src/mem.rs:487:14
[INFO] [stderr]     |
[INFO] [stderr] 487 |         self.description().fmt(f)
[INFO] [stderr]     |              ^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr] note: lint level defined here
[INFO] [stderr]    --> src/lib.rs:108:24
[INFO] [stderr]     |
[INFO] [stderr] 108 | #![cfg_attr(test, deny(warnings))]
[INFO] [stderr]     |                        ^^^^^^^^
[INFO] [stderr]     = note: `#[deny(deprecated)]` implied by `#[deny(warnings)]`
[INFO] [stderr] 
[INFO] [stderr] error: use of deprecated item 'std::error::Error::description': use the Display impl or to_string()
[INFO] [stderr]    --> src/mem.rs:505:14
[INFO] [stderr]     |
[INFO] [stderr] 505 |         self.description().fmt(f)
[INFO] [stderr]     |              ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 2 previous errors
[INFO] [stderr] 
[INFO] [stderr] error: could not compile `flate2`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "ff61c107c76b3c08fd0c1fcc8d4289a55440b76e6ea23c8282835680d6daf54d"`
[INFO] running `"docker" "rm" "-f" "ff61c107c76b3c08fd0c1fcc8d4289a55440b76e6ea23c8282835680d6daf54d"`
[INFO] [stdout] ff61c107c76b3c08fd0c1fcc8d4289a55440b76e6ea23c8282835680d6daf54d