[INFO] updating cached repository https://github.com/TimonPost/udp-dtls
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] [stderr] From https://github.com/TimonPost/udp-dtls
[INFO] [stderr]  * [new branch]      multiple_connections -> multiple_connections
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 5c8f903ebfa489ed3738f27f54718915134ddab2
[INFO] checking TimonPost/udp-dtls against try#1a608893c03d7722effeb0058e82770bd36b4b3c for pr-66504-1
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FTimonPost%2Fudp-dtls" "/workspace/builds/worker-11/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-11/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/TimonPost/udp-dtls on toolchain 1a608893c03d7722effeb0058e82770bd36b4b3c
[INFO] running `"/workspace/cargo-home/bin/cargo" "+1a608893c03d7722effeb0058e82770bd36b4b3c" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/TimonPost/udp-dtls
[INFO] finished tweaking git repo https://github.com/TimonPost/udp-dtls
[INFO] tweaked toml for git repo https://github.com/TimonPost/udp-dtls written to /workspace/builds/worker-11/source/Cargo.toml
[INFO] crate git repo https://github.com/TimonPost/udp-dtls already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+1a608893c03d7722effeb0058e82770bd36b4b3c" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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" "+1a608893c03d7722effeb0058e82770bd36b4b3c" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 1aa19b6d5def47d7215adebd7616b5226751ab7c8a85881c06f8de0b7ddde5b8
[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" "1aa19b6d5def47d7215adebd7616b5226751ab7c8a85881c06f8de0b7ddde5b8"`
[INFO] [stderr]    Compiling semver-parser v0.7.0
[INFO] [stderr]    Compiling libc v0.2.49
[INFO] [stderr]    Compiling pkg-config v0.3.14
[INFO] [stderr]    Compiling cc v1.0.30
[INFO] [stderr]    Compiling byteorder v1.3.1
[INFO] [stderr]     Checking foreign-types-shared v0.1.1
[INFO] [stderr]    Compiling openssl v0.10.19
[INFO] [stderr]     Checking cfg-if v0.1.7
[INFO] [stderr]     Checking lazy_static v1.3.0
[INFO] [stderr]     Checking bitflags v1.0.4
[INFO] [stderr]     Checking openssl-probe v0.1.2
[INFO] [stderr]     Checking foreign-types v0.3.2
[INFO] [stderr]     Checking log v0.4.6
[INFO] [stderr]    Compiling semver v0.9.0
[INFO] [stderr]    Compiling rustc_version v0.2.3
[INFO] [stderr]     Checking iovec v0.1.2
[INFO] [stderr]     Checking bytes v0.4.11
[INFO] [stderr]    Compiling openssl-sys v0.9.42
[INFO] [stderr]     Checking udp-dtls v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused import: `openssl::ssl::SslMethod`
[INFO] [stderr]  --> examples/udp_socket.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use openssl::ssl::SslMethod;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `DtlsAcceptorBuilder`
[INFO] [stderr]   --> examples/udp_socket.rs:10:16
[INFO] [stderr]    |
[INFO] [stderr] 10 | use udp_dtls::{DtlsAcceptorBuilder, UdpChannel};
[INFO] [stderr]    |                ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: denote infinite loops with `loop { ... }`
[INFO] [stderr]   --> examples/udp_socket.rs:48:9
[INFO] [stderr]    |
[INFO] [stderr] 48 |         while true {
[INFO] [stderr]    |         ^^^^^^^^^^ help: use `loop`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(while_true)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: denote infinite loops with `loop { ... }`
[INFO] [stderr]   --> examples/udp_socket.rs:66:5
[INFO] [stderr]    |
[INFO] [stderr] 66 |     while true {
[INFO] [stderr]    |     ^^^^^^^^^^ help: use `loop`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `guard`
[INFO] [stderr]   --> examples/udp_socket.rs:43:9
[INFO] [stderr]    |
[INFO] [stderr] 43 |     let guard = thread::spawn(move || {
[INFO] [stderr]    |         ^^^^^ help: consider prefixing with an underscore: `_guard`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `buf`
[INFO] [stderr]   --> examples/udp_socket.rs:67:17
[INFO] [stderr]    |
[INFO] [stderr] 67 |         let mut buf = [0; 5];
[INFO] [stderr]    |                 ^^^ help: consider prefixing with an underscore: `_buf`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> examples/udp_socket.rs:67:13
[INFO] [stderr]    |
[INFO] [stderr] 67 |         let mut buf = [0; 5];
[INFO] [stderr]    |             ----^^^
[INFO] [stderr]    |             |
[INFO] [stderr]    |             help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> examples/udp_socket.rs:51:13
[INFO] [stderr]    |
[INFO] [stderr] 51 |             dtls_server.read_exact(&mut received);
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> examples/udp_socket.rs:70:9
[INFO] [stderr]    |
[INFO] [stderr] 70 |         dtls_client.write_all(buf);
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 16.41s
[INFO] running `"docker" "inspect" "1aa19b6d5def47d7215adebd7616b5226751ab7c8a85881c06f8de0b7ddde5b8"`
[INFO] running `"docker" "rm" "-f" "1aa19b6d5def47d7215adebd7616b5226751ab7c8a85881c06f8de0b7ddde5b8"`
[INFO] [stdout] 1aa19b6d5def47d7215adebd7616b5226751ab7c8a85881c06f8de0b7ddde5b8