[INFO] fetching crate cached 0.12.0...
[INFO] checking cached-0.12.0 against master#74e80468347471779be6060d8d7d6d04e98e467f for pr-72788
[INFO] extracting crate cached 0.12.0 into /workspace/builds/worker-1/source
[INFO] validating manifest of crates.io crate cached 0.12.0 on toolchain 74e80468347471779be6060d8d7d6d04e98e467f
[INFO] running `"/workspace/cargo-home/bin/cargo" "+74e80468347471779be6060d8d7d6d04e98e467f" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate cached 0.12.0
[INFO] finished tweaking crates.io crate cached 0.12.0
[INFO] tweaked toml for crates.io crate cached 0.12.0 written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] crate crates.io crate cached 0.12.0 already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+74e80468347471779be6060d8d7d6d04e98e467f" "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" "+74e80468347471779be6060d8d7d6d04e98e467f" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 94b4bacc1590ee9b7e04786f57555abb20fcd72fc0536933f6ddec64a9c5ee2c
[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" "94b4bacc1590ee9b7e04786f57555abb20fcd72fc0536933f6ddec64a9c5ee2c"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]     Checking once_cell v1.3.1
[INFO] [stderr]     Checking cached v0.12.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unnecessary braces around block return value
[INFO] [stderr]    --> tests/cached.rs:224:27
[INFO] [stderr]     |
[INFO] [stderr] 224 |     PostGet(cached_val) = { return Ok(cached_val.clone()) };
[INFO] [stderr]     |                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these braces
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_braces)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary braces around function argument
[INFO] [stderr]    --> tests/cached.rs:231:22
[INFO] [stderr]     |
[INFO] [stderr] 231 |     Set(set_value) = { set_value.clone() };
[INFO] [stderr]     |                      ^^^^^^^^^^^^^^^^^^^^^ help: remove these braces
[INFO] [stderr] 
[INFO] [stderr] warning: 2 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.51s
[INFO] running `"docker" "inspect" "94b4bacc1590ee9b7e04786f57555abb20fcd72fc0536933f6ddec64a9c5ee2c"`
[INFO] running `"docker" "rm" "-f" "94b4bacc1590ee9b7e04786f57555abb20fcd72fc0536933f6ddec64a9c5ee2c"`
[INFO] [stdout] 94b4bacc1590ee9b7e04786f57555abb20fcd72fc0536933f6ddec64a9c5ee2c