[INFO] fetching crate acme-lib 0.7.1...
[INFO] checking acme-lib-0.7.1 against try#c8bdaa84ec1b37f18f30375e196a65b7602f3790 for pr-73345
[INFO] extracting crate acme-lib 0.7.1 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate acme-lib 0.7.1 on toolchain c8bdaa84ec1b37f18f30375e196a65b7602f3790
[INFO] running `"/workspace/cargo-home/bin/cargo" "+c8bdaa84ec1b37f18f30375e196a65b7602f3790" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate acme-lib 0.7.1
[INFO] finished tweaking crates.io crate acme-lib 0.7.1
[INFO] tweaked toml for crates.io crate acme-lib 0.7.1 written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+c8bdaa84ec1b37f18f30375e196a65b7602f3790" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+c8bdaa84ec1b37f18f30375e196a65b7602f3790" "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-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" "+c8bdaa84ec1b37f18f30375e196a65b7602f3790" "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] fc7045fd1a24195b0182510d589740cdd69ba2d5b37dd573d049dc3f3a6f2507
[INFO] running `"docker" "start" "-a" "fc7045fd1a24195b0182510d589740cdd69ba2d5b37dd573d049dc3f3a6f2507"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling log v0.4.8
[INFO] [stderr]     Checking once_cell v1.4.0
[INFO] [stderr]     Checking chunked_transfer v1.2.0
[INFO] [stderr]    Compiling ring v0.16.14
[INFO] [stderr]     Checking qstring v0.7.2
[INFO] [stderr]    Compiling openssl-sys v0.9.58
[INFO] [stderr]     Checking serde_json v1.0.55
[INFO] [stderr]     Checking tokio-io v0.1.13
[INFO] [stderr]     Checking mio v0.6.22
[INFO] [stderr]     Checking tokio-threadpool v0.1.18
[INFO] [stderr]     Checking want v0.2.0
[INFO] [stderr]     Checking env_logger v0.6.2
[INFO] [stderr]    Compiling openssl v0.10.29
[INFO] [stderr]     Checking h2 v0.1.26
[INFO] [stderr]     Checking tokio-reactor v0.1.12
[INFO] [stderr]     Checking tokio-tcp v0.1.4
[INFO] [stderr]     Checking tokio v0.1.22
[INFO] [stderr]     Checking webpki v0.21.3
[INFO] [stderr]     Checking sct v0.6.0
[INFO] [stderr]     Checking webpki-roots v0.18.0
[INFO] [stderr]     Checking rustls v0.16.0
[INFO] [stderr]     Checking hyper v0.12.35
[INFO] [stderr]     Checking ureq v0.11.4
[INFO] [stderr]     Checking acme-lib v0.7.1 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unnecessary braces around block return value
[INFO] [stderr]   --> src/cert.rs:14:52
[INFO] [stderr]    |
[INFO] [stderr] 14 |     pub(crate) static ref EC_GROUP_P256: EcGroup = { ec_group(Nid::X9_62_PRIME256V1) };
[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 block return value
[INFO] [stderr]   --> src/cert.rs:15:52
[INFO] [stderr]    |
[INFO] [stderr] 15 |     pub(crate) static ref EC_GROUP_P384: EcGroup = { ec_group(Nid::SECP384R1) };
[INFO] [stderr]    |                                                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these braces
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary braces around block return value
[INFO] [stderr]  --> src/util.rs:9:9
[INFO] [stderr]   |
[INFO] [stderr] 9 |         { base64::Config::new(base64::CharacterSet::UrlSafe, false) };
[INFO] [stderr]   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these braces
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary braces around block return value
[INFO] [stderr]   --> src/cert.rs:14:52
[INFO] [stderr]    |
[INFO] [stderr] 14 |     pub(crate) static ref EC_GROUP_P256: EcGroup = { ec_group(Nid::X9_62_PRIME256V1) };
[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 block return value
[INFO] [stderr]   --> src/cert.rs:15:52
[INFO] [stderr]    |
[INFO] [stderr] 15 |     pub(crate) static ref EC_GROUP_P384: EcGroup = { ec_group(Nid::SECP384R1) };
[INFO] [stderr]    |                                                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these braces
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary braces around block return value
[INFO] [stderr]  --> src/util.rs:9:9
[INFO] [stderr]   |
[INFO] [stderr] 9 |         { base64::Config::new(base64::CharacterSet::UrlSafe, false) };
[INFO] [stderr]   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these braces
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary braces around block return value
[INFO] [stderr]   --> src/test/mod.rs:10:39
[INFO] [stderr]    |
[INFO] [stderr] 10 |     static ref RE_URL: regex::Regex = { regex::Regex::new("<URL>").unwrap() };
[INFO] [stderr]    |                                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these braces
[INFO] [stderr] 
[INFO] [stderr] warning: 3 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: 4 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 24.93s
[INFO] running `"docker" "inspect" "fc7045fd1a24195b0182510d589740cdd69ba2d5b37dd573d049dc3f3a6f2507"`
[INFO] running `"docker" "rm" "-f" "fc7045fd1a24195b0182510d589740cdd69ba2d5b37dd573d049dc3f3a6f2507"`
[INFO] [stdout] fc7045fd1a24195b0182510d589740cdd69ba2d5b37dd573d049dc3f3a6f2507