[INFO] cloning repository https://github.com/bschwind/udp-stress-test
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/bschwind/udp-stress-test" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbschwind%2Fudp-stress-test", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbschwind%2Fudp-stress-test'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] ae582a9eb84e7c8ddbdce41d0f638ca9d149e007
[INFO] checking bschwind/udp-stress-test against master#c919f490bbcd2b29b74016101f7ec71aaa24bdbb for pr-79073
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbschwind%2Fudp-stress-test" "/workspace/builds/worker-13/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-13/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/bschwind/udp-stress-test on toolchain c919f490bbcd2b29b74016101f7ec71aaa24bdbb
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+c919f490bbcd2b29b74016101f7ec71aaa24bdbb" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/bschwind/udp-stress-test
[INFO] finished tweaking git repo https://github.com/bschwind/udp-stress-test
[INFO] tweaked toml for git repo https://github.com/bschwind/udp-stress-test written to /workspace/builds/worker-13/source/Cargo.toml
[INFO] crate git repo https://github.com/bschwind/udp-stress-test already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+c919f490bbcd2b29b74016101f7ec71aaa24bdbb" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+c919f490bbcd2b29b74016101f7ec71aaa24bdbb" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8f5b1a59bb2223c4079ac81f2002897605638aca9c0303119ca225dd6797938c
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "8f5b1a59bb2223c4079ac81f2002897605638aca9c0303119ca225dd6797938c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8f5b1a59bb2223c4079ac81f2002897605638aca9c0303119ca225dd6797938c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8f5b1a59bb2223c4079ac81f2002897605638aca9c0303119ca225dd6797938c", kill_on_drop: false }`
[INFO] [stdout] 8f5b1a59bb2223c4079ac81f2002897605638aca9c0303119ca225dd6797938c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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" "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" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+c919f490bbcd2b29b74016101f7ec71aaa24bdbb" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 6a61cc7cfaaaf13fb73523846adca302edd2cc1b1be3d67fa46553c857f6b0a6
[INFO] running `Command { std: "docker" "start" "-a" "6a61cc7cfaaaf13fb73523846adca302edd2cc1b1be3d67fa46553c857f6b0a6", kill_on_drop: false }`
[INFO] [stderr]     Checking slab v0.3.0
[INFO] [stderr]     Checking scoped-tls v0.1.0
[INFO] [stderr]     Checking take v0.1.0
[INFO] [stderr]     Checking smallvec v0.2.1
[INFO] [stderr]     Checking iovec v0.1.0
[INFO] [stderr]     Checking tokio-service v0.1.0
[INFO] [stderr]     Checking net2 v0.2.29
[INFO] [stderr]     Checking clap v2.24.1
[INFO] [stderr]     Checking tokio-timer v0.1.1
[INFO] [stderr]     Checking bytes v0.4.3
[INFO] [stderr]     Checking mio v0.6.7
[INFO] [stderr]     Checking tokio-io v0.1.1
[INFO] [stderr]     Checking tokio-core v0.1.7
[INFO] [stderr]     Checking tokio-proto v0.1.1
[INFO] [stderr]     Checking udp-fun v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `buf`
[INFO] [stdout]    --> src/main.rs:113:50
[INFO] [stdout]     |
[INFO] [stdout] 113 | fn run_server(bind_addr: &str, server_port: u16, buf: Vec<u8>, num_clients: usize) {
[INFO] [stdout]     |                                                  ^^^ help: if this is intentional, prefix it with an underscore: `_buf`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `buf`
[INFO] [stdout]    --> src/main.rs:113:50
[INFO] [stdout]     |
[INFO] [stdout] 113 | fn run_server(bind_addr: &str, server_port: u16, buf: Vec<u8>, num_clients: usize) {
[INFO] [stdout]     |                                                  ^^^ help: if this is intentional, prefix it with an underscore: `_buf`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 14.18s
[INFO] running `Command { std: "docker" "inspect" "6a61cc7cfaaaf13fb73523846adca302edd2cc1b1be3d67fa46553c857f6b0a6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6a61cc7cfaaaf13fb73523846adca302edd2cc1b1be3d67fa46553c857f6b0a6", kill_on_drop: false }`
[INFO] [stdout] 6a61cc7cfaaaf13fb73523846adca302edd2cc1b1be3d67fa46553c857f6b0a6