[INFO] crate jsonrpc-http-server 14.0.3 is already in cache
[INFO] checking jsonrpc-http-server-14.0.3 against try#7cb06892a23b4da510686618c8730f0b2e8bd952 for pr-66963
[INFO] extracting crate jsonrpc-http-server 14.0.3 into /workspace/builds/worker-0/source
[INFO] validating manifest of crates.io crate jsonrpc-http-server 14.0.3 on toolchain 7cb06892a23b4da510686618c8730f0b2e8bd952
[INFO] running `"/workspace/cargo-home/bin/cargo" "+7cb06892a23b4da510686618c8730f0b2e8bd952" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate jsonrpc-http-server 14.0.3
[INFO] finished tweaking crates.io crate jsonrpc-http-server 14.0.3
[INFO] tweaked toml for crates.io crate jsonrpc-http-server 14.0.3 written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate crates.io crate jsonrpc-http-server 14.0.3 already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+7cb06892a23b4da510686618c8730f0b2e8bd952" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "+7cb06892a23b4da510686618c8730f0b2e8bd952" "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] 07cd1d1bb7b7d62d0ae585a9edc9db4db9143638414c121e5b6e24bdee14377d
[INFO] running `"docker" "start" "-a" "07cd1d1bb7b7d62d0ae585a9edc9db4db9143638414c121e5b6e24bdee14377d"`
[INFO] [stderr]     Checking tokio-io v0.1.12
[INFO] [stderr]     Checking jsonrpc-core v14.0.3
[INFO] [stderr]     Checking tokio-reactor v0.1.10
[INFO] [stderr]     Checking tokio-codec v0.1.1
[INFO] [stderr]     Checking tokio-fs v0.1.6
[INFO] [stderr]     Checking h2 v0.1.26
[INFO] [stderr]     Checking tokio-uds v0.2.5
[INFO] [stderr]     Checking tokio-tcp v0.1.3
[INFO] [stderr]     Checking tokio-udp v0.1.5
[INFO] [stderr]     Checking tokio v0.1.22
[INFO] [stderr]     Checking jsonrpc-server-utils v14.0.3
[INFO] [stderr]     Checking hyper v0.12.35
[INFO] [stderr]     Checking jsonrpc-http-server v14.0.3 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unnecessary parentheses around type
[INFO] [stderr]    --> src/lib.rs:444:26
[INFO] [stderr]     |
[INFO] [stderr] 444 |             .collect::<io::Result<(Vec<_>)>>()?;
[INFO] [stderr]     |                                   ^^^^^^^^ help: remove these parentheses
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around type
[INFO] [stderr]    --> src/lib.rs:444:26
[INFO] [stderr]     |
[INFO] [stderr] 444 |             .collect::<io::Result<(Vec<_>)>>()?;
[INFO] [stderr]     |                                   ^^^^^^^^ help: remove these parentheses
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 20.47s
[INFO] running `"docker" "inspect" "07cd1d1bb7b7d62d0ae585a9edc9db4db9143638414c121e5b6e24bdee14377d"`
[INFO] running `"docker" "rm" "-f" "07cd1d1bb7b7d62d0ae585a9edc9db4db9143638414c121e5b6e24bdee14377d"`
[INFO] [stdout] 07cd1d1bb7b7d62d0ae585a9edc9db4db9143638414c121e5b6e24bdee14377d