[INFO] cloning repository https://github.com/naturalethic/tcpthing
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/naturalethic/tcpthing" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnaturalethic%2Ftcpthing", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnaturalethic%2Ftcpthing'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] c0631160d6ae79fd6e3bf633f727939845ba910e
[INFO] testing naturalethic/tcpthing against beta-2020-07-24 for beta-1.46-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnaturalethic%2Ftcpthing" "/workspace/builds/worker-4/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/naturalethic/tcpthing on toolchain beta-2020-07-24
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-07-24" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/naturalethic/tcpthing
[INFO] finished tweaking git repo https://github.com/naturalethic/tcpthing
[INFO] tweaked toml for git repo https://github.com/naturalethic/tcpthing written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/naturalethic/tcpthing already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-07-24" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-07-24" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d828f4c0282aefdd0aeeda2e6dbb096abad3cec219e57d8f3c97694226ba976e
[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" "d828f4c0282aefdd0aeeda2e6dbb096abad3cec219e57d8f3c97694226ba976e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d828f4c0282aefdd0aeeda2e6dbb096abad3cec219e57d8f3c97694226ba976e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d828f4c0282aefdd0aeeda2e6dbb096abad3cec219e57d8f3c97694226ba976e", kill_on_drop: false }`
[INFO] [stdout] d828f4c0282aefdd0aeeda2e6dbb096abad3cec219e57d8f3c97694226ba976e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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=warn" "-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:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-07-24" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 439c378c98c62ea497c967a55ede3c625c53fbc43a61112d6c367d8a7e6f58c2
[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" "439c378c98c62ea497c967a55ede3c625c53fbc43a61112d6c367d8a7e6f58c2", kill_on_drop: false }`
[INFO] [stderr]    Compiling textwrap v0.11.0
[INFO] [stderr]    Compiling atty v0.2.13
[INFO] [stderr]    Compiling rand v0.4.6
[INFO] [stderr]    Compiling clap v2.33.0
[INFO] [stderr]    Compiling rand v0.3.23
[INFO] [stderr]    Compiling tcpthing v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `remote_keys`
[INFO] [stdout]   --> src/main.rs:54:7
[INFO] [stdout]    |
[INFO] [stdout] 54 |   let mut remote_keys: Vec<u8>;
[INFO] [stdout]    |       ^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_remote_keys`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/main.rs:58:10
[INFO] [stdout]    |
[INFO] [stdout] 58 |       Ok(mut stream) => {
[INFO] [stdout]    |          ----^^^^^^
[INFO] [stdout]    |          |
[INFO] [stdout]    |          help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 14.14s
[INFO] running `Command { std: "docker" "inspect" "439c378c98c62ea497c967a55ede3c625c53fbc43a61112d6c367d8a7e6f58c2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "439c378c98c62ea497c967a55ede3c625c53fbc43a61112d6c367d8a7e6f58c2", kill_on_drop: false }`
[INFO] [stdout] 439c378c98c62ea497c967a55ede3c625c53fbc43a61112d6c367d8a7e6f58c2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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=warn" "-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:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-07-24" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] bfbe9c8bed528adca3ff35d2a09377aa51ccc74b66681d1bf7bbc08d97314473
[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" "bfbe9c8bed528adca3ff35d2a09377aa51ccc74b66681d1bf7bbc08d97314473", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling tcpthing v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `remote_keys`
[INFO] [stdout]   --> src/main.rs:54:7
[INFO] [stdout]    |
[INFO] [stdout] 54 |   let mut remote_keys: Vec<u8>;
[INFO] [stdout]    |       ^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_remote_keys`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/main.rs:58:10
[INFO] [stdout]    |
[INFO] [stdout] 58 |       Ok(mut stream) => {
[INFO] [stdout]    |          ----^^^^^^
[INFO] [stdout]    |          |
[INFO] [stdout]    |          help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.30s
[INFO] running `Command { std: "docker" "inspect" "bfbe9c8bed528adca3ff35d2a09377aa51ccc74b66681d1bf7bbc08d97314473", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bfbe9c8bed528adca3ff35d2a09377aa51ccc74b66681d1bf7bbc08d97314473", kill_on_drop: false }`
[INFO] [stdout] bfbe9c8bed528adca3ff35d2a09377aa51ccc74b66681d1bf7bbc08d97314473
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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=warn" "-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:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-07-24" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] bb1b4250d3aa3446f34f5d922b45bc0f7b4d3fa7030d2543a1d3f295e5cf3d58
[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" "bb1b4250d3aa3446f34f5d922b45bc0f7b4d3fa7030d2543a1d3f295e5cf3d58", kill_on_drop: false }`
[INFO] [stdout] 
[INFO] [stderr] warning: unused variable: `remote_keys`
[INFO] [stdout] running 0 tests
[INFO] [stderr]   --> src/main.rs:54:7
[INFO] [stdout] 
[INFO] [stderr]    |
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stderr] 54 |   let mut remote_keys: Vec<u8>;
[INFO] [stdout] 
[INFO] [stderr]    |       ^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_remote_keys`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/main.rs:58:10
[INFO] [stderr]    |
[INFO] [stderr] 58 |       Ok(mut stream) => {
[INFO] [stderr]    |          ----^^^^^^
[INFO] [stderr]    |          |
[INFO] [stderr]    |          help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 2 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.08s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/tcpthing-d1ce95643b612467
[INFO] running `Command { std: "docker" "inspect" "bb1b4250d3aa3446f34f5d922b45bc0f7b4d3fa7030d2543a1d3f295e5cf3d58", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bb1b4250d3aa3446f34f5d922b45bc0f7b4d3fa7030d2543a1d3f295e5cf3d58", kill_on_drop: false }`
[INFO] [stdout] bb1b4250d3aa3446f34f5d922b45bc0f7b4d3fa7030d2543a1d3f295e5cf3d58