[INFO] fetching crate punching_client 0.1.1...
[INFO] testing punching_client-0.1.1 against 1.49.0 for beta-1.50-1
[INFO] extracting crate punching_client 0.1.1 into /workspace/builds/worker-13/source
[INFO] validating manifest of crates.io crate punching_client 0.1.1 on toolchain 1.49.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate punching_client 0.1.1
[INFO] finished tweaking crates.io crate punching_client 0.1.1
[INFO] tweaked toml for crates.io crate punching_client 0.1.1 written to /workspace/builds/worker-13/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded punching_server v0.1.1
[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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b3d8d9c280ab6e061900a450c1ce9a158abae799053f32d09d76833f4ce16962
[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" "b3d8d9c280ab6e061900a450c1ce9a158abae799053f32d09d76833f4ce16962", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b3d8d9c280ab6e061900a450c1ce9a158abae799053f32d09d76833f4ce16962", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b3d8d9c280ab6e061900a450c1ce9a158abae799053f32d09d76833f4ce16962", kill_on_drop: false }`
[INFO] [stdout] b3d8d9c280ab6e061900a450c1ce9a158abae799053f32d09d76833f4ce16962
[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=warn" "-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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 94ff9b0653426e5a1b684a2a44e003c5bc517fa61304bcab1b29bd69dc9c50cf
[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" "94ff9b0653426e5a1b684a2a44e003c5bc517fa61304bcab1b29bd69dc9c50cf", kill_on_drop: false }`
[INFO] [stderr]    Compiling anyhow v1.0.37
[INFO] [stderr]    Compiling futures-lite v1.11.3
[INFO] [stderr]    Compiling nb-connect v1.0.2
[INFO] [stderr]    Compiling polling v2.0.2
[INFO] [stderr]    Compiling async-trait v0.1.42
[INFO] [stderr]    Compiling uuid v0.8.1
[INFO] [stderr]    Compiling bincode v1.3.1
[INFO] [stderr]    Compiling async-executor v1.4.0
[INFO] [stderr]    Compiling async-io v1.3.1
[INFO] [stderr]    Compiling blocking v1.0.2
[INFO] [stderr]    Compiling async-global-executor v1.4.3
[INFO] [stderr]    Compiling async-std v1.8.0
[INFO] [stderr]    Compiling punching_server v0.1.1
[INFO] [stderr]    Compiling punching_client v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused return value of `to_owned` that must be used
[INFO] [stdout]   --> src/cli/rec_p2p.rs:47:9
[INFO] [stdout]    |
[INFO] [stdout] 47 |         map.remove(&(self.session, self.max)).unwrap().to_owned();
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: cloning is often expensive and is not expected to have side effects
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 26.74s
[INFO] running `Command { std: "docker" "inspect" "94ff9b0653426e5a1b684a2a44e003c5bc517fa61304bcab1b29bd69dc9c50cf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "94ff9b0653426e5a1b684a2a44e003c5bc517fa61304bcab1b29bd69dc9c50cf", kill_on_drop: false }`
[INFO] [stdout] 94ff9b0653426e5a1b684a2a44e003c5bc517fa61304bcab1b29bd69dc9c50cf
[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=warn" "-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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 354323255cd3648ed084a237a4a9577a758ee8f01fe86390298d98d28eb2ec20
[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" "354323255cd3648ed084a237a4a9577a758ee8f01fe86390298d98d28eb2ec20", kill_on_drop: false }`
[INFO] [stderr]    Compiling punching_client v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused return value of `to_owned` that must be used
[INFO] [stdout]   --> src/cli/rec_p2p.rs:47:9
[INFO] [stdout]    |
[INFO] [stdout] 47 |         map.remove(&(self.session, self.max)).unwrap().to_owned();
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: cloning is often expensive and is not expected to have side effects
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `to_owned` that must be used
[INFO] [stdout]   --> src/cli/rec_p2p.rs:47:9
[INFO] [stdout]    |
[INFO] [stdout] 47 |         map.remove(&(self.session, self.max)).unwrap().to_owned();
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: cloning is often expensive and is not expected to have side effects
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 3.15s
[INFO] running `Command { std: "docker" "inspect" "354323255cd3648ed084a237a4a9577a758ee8f01fe86390298d98d28eb2ec20", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "354323255cd3648ed084a237a4a9577a758ee8f01fe86390298d98d28eb2ec20", kill_on_drop: false }`
[INFO] [stdout] 354323255cd3648ed084a237a4a9577a758ee8f01fe86390298d98d28eb2ec20
[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=warn" "-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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] ce14966b208e2be355a70b1d7c7db1f0e612d6fe14621ee5bf2468ab97f5dcdf
[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" "ce14966b208e2be355a70b1d7c7db1f0e612d6fe14621ee5bf2468ab97f5dcdf", kill_on_drop: false }`
[INFO] [stdout] 
[INFO] [stderr] warning: unused return value of `to_owned` that must be used
[INFO] [stdout] running 0 tests
[INFO] [stderr]   --> src/cli/rec_p2p.rs:47:9
[INFO] [stdout] 
[INFO] [stderr]    |
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stderr] 47 |         map.remove(&(self.session, self.max)).unwrap().to_owned();
[INFO] [stdout] 
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]    = note: cloning is often expensive and is not expected to have side effects
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr] warning: unused return value of `to_owned` that must be used
[INFO] [stderr]   --> src/cli/rec_p2p.rs:47:9
[INFO] [stderr]    |
[INFO] [stderr] 47 |         map.remove(&(self.session, self.max)).unwrap().to_owned();
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]    = note: cloning is often expensive and is not expected to have side effects
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.07s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/punching_client-400e5daab1e7877d
[INFO] [stderr]    Doc-tests punching_client
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test src/cli/callee.rs - cli::callee::listen (line 9) ... FAILED
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- src/cli/callee.rs - cli::callee::listen (line 9) stdout ----
[INFO] [stdout] error: this file contains an unclosed delimiter
[INFO] [stdout]   --> src/cli/callee.rs:19:2
[INFO] [stdout]    |
[INFO] [stdout] 3  | fn main() {
[INFO] [stdout]    |           - unclosed delimiter
[INFO] [stdout] 4  | use async_std::task::block_on;
[INFO] [stdout] 5  |  fn echo(msg:&Vec<u8>)->Vec<u8>{
[INFO] [stdout]    |                                - unclosed delimiter
[INFO] [stdout] ...
[INFO] [stdout] 13 | }
[INFO] [stdout]    |  ^
[INFO] [stdout] 
[INFO] [stdout] error: expected one of `.`, `;`, `?`, `}`, or an operator, found keyword `fn`
[INFO] [stdout]  --> src/cli/callee.rs:13:1
[INFO] [stdout]   |
[INFO] [stdout] 3 | fn main() {
[INFO] [stdout]   |           - unclosed delimiter
[INFO] [stdout] ...
[INFO] [stdout] 6 |     msg.to_vec()
[INFO] [stdout]   |                 -
[INFO] [stdout]   |                 |
[INFO] [stdout]   |                 expected one of `.`, `;`, `?`, `}`, or an operator
[INFO] [stdout]   |                 help: `}` may belong here
[INFO] [stdout] 7 | fn main() {
[INFO] [stdout]   | ^^ unexpected token
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout]     src/cli/callee.rs - cli::callee::listen (line 9)
[INFO] [stdout] 
[INFO] [stdout] test result: FAILED. 0 passed; 1 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr] error: test failed, to rerun pass '--doc'
[INFO] running `Command { std: "docker" "inspect" "ce14966b208e2be355a70b1d7c7db1f0e612d6fe14621ee5bf2468ab97f5dcdf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ce14966b208e2be355a70b1d7c7db1f0e612d6fe14621ee5bf2468ab97f5dcdf", kill_on_drop: false }`
[INFO] [stdout] ce14966b208e2be355a70b1d7c7db1f0e612d6fe14621ee5bf2468ab97f5dcdf