[INFO] fetching crate discv5 0.1.0-alpha.2...
[INFO] checking discv5-0.1.0-alpha.2 against try#8a749131e7beb72f6edacefd2bdcbed3d67b2112 for pr-72331
[INFO] extracting crate discv5 0.1.0-alpha.2 into /workspace/builds/worker-5/source
[INFO] validating manifest of crates.io crate discv5 0.1.0-alpha.2 on toolchain 8a749131e7beb72f6edacefd2bdcbed3d67b2112
[INFO] running `"/workspace/cargo-home/bin/cargo" "+8a749131e7beb72f6edacefd2bdcbed3d67b2112" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate discv5 0.1.0-alpha.2
[INFO] finished tweaking crates.io crate discv5 0.1.0-alpha.2
[INFO] tweaked toml for crates.io crate discv5 0.1.0-alpha.2 written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] crate crates.io crate discv5 0.1.0-alpha.2 already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+8a749131e7beb72f6edacefd2bdcbed3d67b2112" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded enr v0.1.0-alpha.7
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "+8a749131e7beb72f6edacefd2bdcbed3d67b2112" "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] 4902bc6a4dfa148d3d90e968532ccdc4cef70c790893467ea00ee43fa4b5dbc9
[INFO] running `"docker" "start" "-a" "4902bc6a4dfa148d3d90e968532ccdc4cef70c790893467ea00ee43fa4b5dbc9"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling libc v0.2.69
[INFO] [stderr]    Compiling proc-macro2 v1.0.10
[INFO] [stderr]    Compiling syn v1.0.18
[INFO] [stderr]    Compiling getrandom v0.1.14
[INFO] [stderr]    Compiling cc v1.0.52
[INFO] [stderr]    Compiling byteorder v1.3.4
[INFO] [stderr]    Compiling memchr v2.3.3
[INFO] [stderr]    Compiling crunchy v0.2.2
[INFO] [stderr]     Checking ppv-lite86 v0.2.6
[INFO] [stderr]    Compiling proc-macro-nested v0.1.4
[INFO] [stderr]     Checking subtle v2.2.2
[INFO] [stderr]    Compiling tiny-keccak v2.0.2
[INFO] [stderr]     Checking pin-utils v0.1.0
[INFO] [stderr]    Compiling serde v1.0.106
[INFO] [stderr]     Checking rustc-hex v2.1.0
[INFO] [stderr]    Compiling openssl v0.10.29
[INFO] [stderr]     Checking regex-syntax v0.6.17
[INFO] [stderr]     Checking arrayref v0.3.6
[INFO] [stderr]     Checking quick-error v1.2.3
[INFO] [stderr]     Checking bs58 v0.3.1
[INFO] [stderr]     Checking bytes v0.5.4
[INFO] [stderr]     Checking termcolor v1.1.0
[INFO] [stderr]     Checking base64 v0.12.0
[INFO] [stderr]     Checking pin-project-lite v0.1.4
[INFO] [stderr]     Checking arrayvec v0.5.1
[INFO] [stderr]     Checking smallvec v1.4.0
[INFO] [stderr]    Compiling num-traits v0.2.11
[INFO] [stderr]    Compiling num-integer v0.1.42
[INFO] [stderr]     Checking thread_local v1.0.1
[INFO] [stderr]    Compiling hex-literal-impl v0.2.1
[INFO] [stderr]     Checking futures-channel v0.3.5
[INFO] [stderr]     Checking rlp v0.4.5
[INFO] [stderr]     Checking humantime v1.3.0
[INFO] [stderr]     Checking log v0.4.8
[INFO] [stderr]     Checking hmac-drbg v0.2.0
[INFO] [stderr]     Checking hkdf v0.8.0
[INFO] [stderr]     Checking block-buffer v0.7.3
[INFO] [stderr]     Checking uint v0.8.3
[INFO] [stderr]     Checking aho-corasick v0.7.10
[INFO] [stderr]     Checking hex-literal v0.2.1
[INFO] [stderr]     Checking sha2 v0.8.1
[INFO] [stderr]    Compiling clear_on_drop v0.2.3
[INFO] [stderr]    Compiling openssl-sys v0.9.55
[INFO] [stderr]    Compiling quote v1.0.3
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking iovec v0.1.4
[INFO] [stderr]     Checking net2 v0.2.34
[INFO] [stderr]     Checking time v0.1.43
[INFO] [stderr]     Checking num_cpus v1.13.0
[INFO] [stderr]     Checking colored v1.9.3
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking mio v0.6.21
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]     Checking rand_xorshift v0.2.0
[INFO] [stderr]     Checking chrono v0.4.11
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]     Checking mio-uds v0.6.7
[INFO] [stderr]     Checking regex v1.3.7
[INFO] [stderr]     Checking simple_logger v1.6.0
[INFO] [stderr]     Checking libsecp256k1 v0.3.5
[INFO] [stderr]     Checking env_logger v0.7.1
[INFO] [stderr]     Checking quickcheck v0.9.2
[INFO] [stderr]    Compiling synstructure v0.12.3
[INFO] [stderr]    Compiling pin-project-internal v0.4.16
[INFO] [stderr]    Compiling zeroize_derive v1.0.0
[INFO] [stderr]    Compiling futures-macro v0.3.5
[INFO] [stderr]    Compiling tokio-macros v0.2.5
[INFO] [stderr]     Checking zeroize v1.1.0
[INFO] [stderr]     Checking tokio v0.2.20
[INFO] [stderr]     Checking curve25519-dalek v2.0.0
[INFO] [stderr]     Checking ed25519-dalek v1.0.0-pre.3
[INFO] [stderr]     Checking enr v0.1.0-alpha.7
[INFO] [stderr]     Checking pin-project v0.4.16
[INFO] [stderr]     Checking futures-util v0.3.5
[INFO] [stderr]     Checking futures-executor v0.3.5
[INFO] [stderr]     Checking futures v0.3.5
[INFO] [stderr]     Checking discv5 v0.1.0-alpha.2 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unnecessary braces around method argument
[INFO] [stderr]    --> src/discv5.rs:164:36
[INFO] [stderr]     |
[INFO] [stderr] 164 |                 .check(&key, &enr, { |v, o, l| ip_limiter(v, &o, l) });
[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 method argument
[INFO] [stderr]    --> src/discv5.rs:752:41
[INFO] [stderr]     |
[INFO] [stderr] 752 |                     .check(&key, &peer, { |v, o, l| ip_limiter(v, &o, l) })
[INFO] [stderr]     |                                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these braces
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary braces around method argument
[INFO] [stderr]    --> src/discv5.rs:816:40
[INFO] [stderr]     |
[INFO] [stderr] 816 |                     .check(&key, &enr, { |v, o, l| ip_limiter(v, &o, l) })
[INFO] [stderr]     |                                        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these braces
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary braces around method argument
[INFO] [stderr]    --> src/discv5.rs:164:36
[INFO] [stderr]     |
[INFO] [stderr] 164 |                 .check(&key, &enr, { |v, o, l| ip_limiter(v, &o, l) });
[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 method argument
[INFO] [stderr]    --> src/discv5.rs:752:41
[INFO] [stderr]     |
[INFO] [stderr] 752 |                     .check(&key, &peer, { |v, o, l| ip_limiter(v, &o, l) })
[INFO] [stderr]     |                                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these braces
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary braces around method argument
[INFO] [stderr]    --> src/discv5.rs:816:40
[INFO] [stderr]     |
[INFO] [stderr] 816 |                     .check(&key, &enr, { |v, o, l| ip_limiter(v, &o, l) })
[INFO] [stderr]     |                                        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these braces
[INFO] [stderr] 
[INFO] [stderr] warning: 3 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: 3 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 25s
[INFO] running `"docker" "inspect" "4902bc6a4dfa148d3d90e968532ccdc4cef70c790893467ea00ee43fa4b5dbc9"`
[INFO] running `"docker" "rm" "-f" "4902bc6a4dfa148d3d90e968532ccdc4cef70c790893467ea00ee43fa4b5dbc9"`
[INFO] [stdout] 4902bc6a4dfa148d3d90e968532ccdc4cef70c790893467ea00ee43fa4b5dbc9