[INFO] cloning repository https://github.com/MarinPostma/simple_tcp_server
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/MarinPostma/simple_tcp_server" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMarinPostma%2Fsimple_tcp_server", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMarinPostma%2Fsimple_tcp_server'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 8b4a249ecddf1edbb5db0144c6d8036ea77516ec
[INFO] testing MarinPostma/simple_tcp_server against try#03a1ea71b075ab964b5278bc6e74cd6c52c36ee0 for pr-74409
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMarinPostma%2Fsimple_tcp_server" "/workspace/builds/worker-1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/MarinPostma/simple_tcp_server on toolchain 03a1ea71b075ab964b5278bc6e74cd6c52c36ee0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+03a1ea71b075ab964b5278bc6e74cd6c52c36ee0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/MarinPostma/simple_tcp_server
[INFO] finished tweaking git repo https://github.com/MarinPostma/simple_tcp_server
[INFO] tweaked toml for git repo https://github.com/MarinPostma/simple_tcp_server written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] crate git repo https://github.com/MarinPostma/simple_tcp_server already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+03a1ea71b075ab964b5278bc6e74cd6c52c36ee0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env@sha256:38e1b949b06cde1964af550a6e548bd9b2b2ea170003ae122f8fc0886596cc07" "/opt/rustwide/cargo-home/bin/cargo" "+03a1ea71b075ab964b5278bc6e74cd6c52c36ee0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ea051174f95e58a72b1dd251a40efe1a319219f633f604e394f44c3dcffa1c76
[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" "ea051174f95e58a72b1dd251a40efe1a319219f633f604e394f44c3dcffa1c76", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ea051174f95e58a72b1dd251a40efe1a319219f633f604e394f44c3dcffa1c76", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ea051174f95e58a72b1dd251a40efe1a319219f633f604e394f44c3dcffa1c76", kill_on_drop: false }`
[INFO] [stdout] ea051174f95e58a72b1dd251a40efe1a319219f633f604e394f44c3dcffa1c76
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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@sha256:38e1b949b06cde1964af550a6e548bd9b2b2ea170003ae122f8fc0886596cc07" "/opt/rustwide/cargo-home/bin/cargo" "+03a1ea71b075ab964b5278bc6e74cd6c52c36ee0" "build" "--frozen" "--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] 510a5cb03fd3499429856fb995d9a3c9164652ff142427852f7a81aba3cb63f8
[INFO] running `Command { std: "docker" "start" "-a" "510a5cb03fd3499429856fb995d9a3c9164652ff142427852f7a81aba3cb63f8", kill_on_drop: false }`
[INFO] [stderr]    Compiling simple_tcp_chat v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `err`
[INFO] [stdout]   --> src/main.rs:70:17
[INFO] [stdout]    |
[INFO] [stdout] 70 |             Err(err) => { }
[INFO] [stdout]    |                 ^^^ help: if this is intentional, prefix it with an underscore: `_err`
[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] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.31s
[INFO] running `Command { std: "docker" "inspect" "510a5cb03fd3499429856fb995d9a3c9164652ff142427852f7a81aba3cb63f8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "510a5cb03fd3499429856fb995d9a3c9164652ff142427852f7a81aba3cb63f8", kill_on_drop: false }`
[INFO] [stdout] 510a5cb03fd3499429856fb995d9a3c9164652ff142427852f7a81aba3cb63f8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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@sha256:38e1b949b06cde1964af550a6e548bd9b2b2ea170003ae122f8fc0886596cc07" "/opt/rustwide/cargo-home/bin/cargo" "+03a1ea71b075ab964b5278bc6e74cd6c52c36ee0" "test" "--frozen" "--no-run" "--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] 94fa697e3366a67bd8dadd630b11beb15c59e3b6da5f46a5ae8ff8dea26dc9f0
[INFO] running `Command { std: "docker" "start" "-a" "94fa697e3366a67bd8dadd630b11beb15c59e3b6da5f46a5ae8ff8dea26dc9f0", kill_on_drop: false }`
[INFO] [stderr]    Compiling simple_tcp_chat v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `err`
[INFO] [stdout]   --> src/main.rs:70:17
[INFO] [stdout]    |
[INFO] [stdout] 70 |             Err(err) => { }
[INFO] [stdout]    |                 ^^^ help: if this is intentional, prefix it with an underscore: `_err`
[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] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.68s
[INFO] running `Command { std: "docker" "inspect" "94fa697e3366a67bd8dadd630b11beb15c59e3b6da5f46a5ae8ff8dea26dc9f0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "94fa697e3366a67bd8dadd630b11beb15c59e3b6da5f46a5ae8ff8dea26dc9f0", kill_on_drop: false }`
[INFO] [stdout] 94fa697e3366a67bd8dadd630b11beb15c59e3b6da5f46a5ae8ff8dea26dc9f0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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@sha256:38e1b949b06cde1964af550a6e548bd9b2b2ea170003ae122f8fc0886596cc07" "/opt/rustwide/cargo-home/bin/cargo" "+03a1ea71b075ab964b5278bc6e74cd6c52c36ee0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 2856bdbae139454d3f07a0876e5471621adec6492a91ffd2f54778dcd63a9506
[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" "2856bdbae139454d3f07a0876e5471621adec6492a91ffd2f54778dcd63a9506", kill_on_drop: false }`
[INFO] [stderr] warning: unused variable: `err`
[INFO] [stderr]   --> src/main.rs:70:17
[INFO] [stderr]    |
[INFO] [stderr] 70 |             Err(err) => { }
[INFO] [stderr]    |                 ^^^ help: if this is intentional, prefix it with an underscore: `_err`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/simple_tcp_chat-6e5fe4ea77065534
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "2856bdbae139454d3f07a0876e5471621adec6492a91ffd2f54778dcd63a9506", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2856bdbae139454d3f07a0876e5471621adec6492a91ffd2f54778dcd63a9506", kill_on_drop: false }`
[INFO] [stdout] 2856bdbae139454d3f07a0876e5471621adec6492a91ffd2f54778dcd63a9506