[INFO] cloning repository https://github.com/cameronp98/multiping
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/cameronp98/multiping" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcameronp98%2Fmultiping", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcameronp98%2Fmultiping'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 714fd069127761b289bc3b84f35afbaaa8e912c9
[INFO] checking cameronp98/multiping against master#f82664191d0e8764b7435b9d72eb0e366b8b1464 for pr-83354
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcameronp98%2Fmultiping" "/workspace/builds/worker-12/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-12/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/cameronp98/multiping on toolchain f82664191d0e8764b7435b9d72eb0e366b8b1464
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f82664191d0e8764b7435b9d72eb0e366b8b1464" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/cameronp98/multiping
[INFO] finished tweaking git repo https://github.com/cameronp98/multiping
[INFO] tweaked toml for git repo https://github.com/cameronp98/multiping written to /workspace/builds/worker-12/source/Cargo.toml
[INFO] crate git repo https://github.com/cameronp98/multiping already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f82664191d0e8764b7435b9d72eb0e366b8b1464" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+f82664191d0e8764b7435b9d72eb0e366b8b1464" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c5ea2521388063fac9f6b657cddbf33747fc8d8e47c9e0a04192c8ec6ebb3c23
[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" "c5ea2521388063fac9f6b657cddbf33747fc8d8e47c9e0a04192c8ec6ebb3c23", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c5ea2521388063fac9f6b657cddbf33747fc8d8e47c9e0a04192c8ec6ebb3c23", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c5ea2521388063fac9f6b657cddbf33747fc8d8e47c9e0a04192c8ec6ebb3c23", kill_on_drop: false }`
[INFO] [stdout] c5ea2521388063fac9f6b657cddbf33747fc8d8e47c9e0a04192c8ec6ebb3c23
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+f82664191d0e8764b7435b9d72eb0e366b8b1464" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8e6e870fcb8f83d415aaf7ca2ed39f06dac017f7993567b6a84cb58baa94c870
[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" "8e6e870fcb8f83d415aaf7ca2ed39f06dac017f7993567b6a84cb58baa94c870", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.60
[INFO] [stderr]    Compiling syn v0.15.42
[INFO] [stderr]    Compiling serde v1.0.98
[INFO] [stderr]    Compiling log v0.4.8
[INFO] [stderr]    Compiling ryu v1.0.0
[INFO] [stderr]     Checking termcolor v1.0.5
[INFO] [stderr]     Checking itoa v0.4.4
[INFO] [stderr]    Compiling bitflags v1.1.0
[INFO] [stderr]    Compiling quote v0.6.13
[INFO] [stderr]     Checking aho-corasick v0.7.4
[INFO] [stderr]     Checking regex v1.2.0
[INFO] [stderr]     Checking atty v0.2.13
[INFO] [stderr]     Checking clap v2.33.0
[INFO] [stderr]     Checking env_logger v0.6.2
[INFO] [stderr]    Compiling serde_derive v1.0.98
[INFO] [stderr]     Checking serde_json v1.0.40
[INFO] [stderr]     Checking multiping v0.1.0 (/opt/rustwide/workdir/multiping)
[INFO] [stdout] warning: unreachable statement
[INFO] [stdout]    --> multiping/src/connection.rs:103:9
[INFO] [stdout]     |
[INFO] [stdout] 94  | /         match self.send_tx.send(Action::Forward(msg)) {
[INFO] [stdout] 95  | |             Ok(()) => unimplemented!(),
[INFO] [stdout] 96  | |             Err(e) => {
[INFO] [stdout] 97  | |                 // sender closed, treat connection as disconnected
[INFO] [stdout] ...   |
[INFO] [stdout] 100 | |             }
[INFO] [stdout] 101 | |         }
[INFO] [stdout]     | |_________- any code following this `match` expression is unreachable, as all arms diverge
[INFO] [stdout] 102 | 
[INFO] [stdout] 103 |           debug!("message forwarded");
[INFO] [stdout]     |           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unreachable statement
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unreachable_code)]` on by default
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable statement
[INFO] [stdout]    --> multiping/src/connection.rs:103:9
[INFO] [stdout]     |
[INFO] [stdout] 94  | /         match self.send_tx.send(Action::Forward(msg)) {
[INFO] [stdout] 95  | |             Ok(()) => unimplemented!(),
[INFO] [stdout] 96  | |             Err(e) => {
[INFO] [stdout] 97  | |                 // sender closed, treat connection as disconnected
[INFO] [stdout] ...   |
[INFO] [stdout] 100 | |             }
[INFO] [stdout] 101 | |         }
[INFO] [stdout]     | |_________- any code following this `match` expression is unreachable, as all arms diverge
[INFO] [stdout] 102 | 
[INFO] [stdout] 103 |           debug!("message forwarded");
[INFO] [stdout]     |           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unreachable statement
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unreachable_code)]` on by default
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking client v0.1.0 (/opt/rustwide/workdir/client)
[INFO] [stderr]     Checking server v0.1.0 (/opt/rustwide/workdir/server)
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 31.42s
[INFO] running `Command { std: "docker" "inspect" "8e6e870fcb8f83d415aaf7ca2ed39f06dac017f7993567b6a84cb58baa94c870", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8e6e870fcb8f83d415aaf7ca2ed39f06dac017f7993567b6a84cb58baa94c870", kill_on_drop: false }`
[INFO] [stdout] 8e6e870fcb8f83d415aaf7ca2ed39f06dac017f7993567b6a84cb58baa94c870