[INFO] cloning repository https://github.com/davll/echo-server-rs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/davll/echo-server-rs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdavll%2Fecho-server-rs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdavll%2Fecho-server-rs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] d63e8ef5e34a4bc0c68705d6d33b2576d23a1607
[INFO] checking davll/echo-server-rs against master#339e19697a39a78f4d669c217b7d21109215de41 for pr-81213
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdavll%2Fecho-server-rs" "/workspace/builds/worker-9/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-9/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/davll/echo-server-rs on toolchain 339e19697a39a78f4d669c217b7d21109215de41
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+339e19697a39a78f4d669c217b7d21109215de41" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/davll/echo-server-rs
[INFO] finished tweaking git repo https://github.com/davll/echo-server-rs
[INFO] tweaked toml for git repo https://github.com/davll/echo-server-rs written to /workspace/builds/worker-9/source/Cargo.toml
[INFO] crate git repo https://github.com/davll/echo-server-rs already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+339e19697a39a78f4d669c217b7d21109215de41" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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@sha256:21f1ed92105a0ef9b0d27ad8bdeb7f36f9f01ac17fffe3a3f3dc5241fc25d8f4" "/opt/rustwide/cargo-home/bin/cargo" "+339e19697a39a78f4d669c217b7d21109215de41" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 45ba6ecd99eec7c6930c03acfd51f527e806f014b5fdd99f7e0101beed2096fe
[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" "45ba6ecd99eec7c6930c03acfd51f527e806f014b5fdd99f7e0101beed2096fe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "45ba6ecd99eec7c6930c03acfd51f527e806f014b5fdd99f7e0101beed2096fe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "45ba6ecd99eec7c6930c03acfd51f527e806f014b5fdd99f7e0101beed2096fe", kill_on_drop: false }`
[INFO] [stdout] 45ba6ecd99eec7c6930c03acfd51f527e806f014b5fdd99f7e0101beed2096fe
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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@sha256:21f1ed92105a0ef9b0d27ad8bdeb7f36f9f01ac17fffe3a3f3dc5241fc25d8f4" "/opt/rustwide/cargo-home/bin/cargo" "+339e19697a39a78f4d669c217b7d21109215de41" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a85e2a1ca0ec17fcf4778c365b7d1e7c3a3af9e8b795e14b36ab3d43d08304b2
[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" "a85e2a1ca0ec17fcf4778c365b7d1e7c3a3af9e8b795e14b36ab3d43d08304b2", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.81
[INFO] [stderr]    Compiling memchr v2.3.4
[INFO] [stderr]     Checking futures-core v0.3.8
[INFO] [stderr]    Compiling log v0.4.11
[INFO] [stderr]     Checking parking v2.0.0
[INFO] [stderr]     Checking pin-project-lite v0.2.0
[INFO] [stderr]     Checking futures-io v0.3.8
[INFO] [stderr]     Checking fastrand v1.4.0
[INFO] [stderr]     Checking waker-fn v1.1.0
[INFO] [stderr]     Checking once_cell v1.5.2
[INFO] [stderr]     Checking vec-arena v1.0.0
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling syn v1.0.55
[INFO] [stderr]     Checking event-listener v2.5.1
[INFO] [stderr]     Checking async-task v4.0.3
[INFO] [stderr]     Checking atomic-waker v1.0.0
[INFO] [stderr]     Checking slab v0.4.2
[INFO] [stderr]     Checking pin-utils v0.1.0
[INFO] [stderr]     Checking concurrent-queue v1.2.2
[INFO] [stderr]    Compiling quote v1.0.8
[INFO] [stderr]     Checking async-mutex v1.4.0
[INFO] [stderr]     Checking async-channel v1.5.1
[INFO] [stderr]    Compiling crossbeam-utils v0.8.1
[INFO] [stderr]     Checking kv-log-macro v1.0.7
[INFO] [stderr]     Checking futures-lite v1.11.3
[INFO] [stderr]     Checking async-executor v1.4.0
[INFO] [stderr]     Checking blocking v1.0.2
[INFO] [stderr]     Checking nb-connect v1.0.2
[INFO] [stderr]     Checking polling v2.0.2
[INFO] [stderr]     Checking num_cpus v1.13.0
[INFO] [stderr]     Checking async-io v1.3.1
[INFO] [stderr]     Checking async-global-executor v1.4.3
[INFO] [stderr]    Compiling async-attributes v1.1.1
[INFO] [stderr]     Checking async-std v1.8.0
[INFO] [stderr]     Checking echo-server v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 28.74s
[INFO] running `Command { std: "docker" "inspect" "a85e2a1ca0ec17fcf4778c365b7d1e7c3a3af9e8b795e14b36ab3d43d08304b2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a85e2a1ca0ec17fcf4778c365b7d1e7c3a3af9e8b795e14b36ab3d43d08304b2", kill_on_drop: false }`
[INFO] [stdout] a85e2a1ca0ec17fcf4778c365b7d1e7c3a3af9e8b795e14b36ab3d43d08304b2