[INFO] cloning repository https://github.com/popasmuerf/tcp_client [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/popasmuerf/tcp_client" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpopasmuerf%2Ftcp_client", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpopasmuerf%2Ftcp_client'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 2293c7e12d0914a9ba7da88c31345ce9e718a59f [INFO] checking popasmuerf/tcp_client against try#81275a1445c7502a974118e0c69b795ab60be991 for pr-80243 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpopasmuerf%2Ftcp_client" "/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/popasmuerf/tcp_client on toolchain 81275a1445c7502a974118e0c69b795ab60be991 [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+81275a1445c7502a974118e0c69b795ab60be991" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/popasmuerf/tcp_client [INFO] finished tweaking git repo https://github.com/popasmuerf/tcp_client [INFO] tweaked toml for git repo https://github.com/popasmuerf/tcp_client written to /workspace/builds/worker-4/source/Cargo.toml [INFO] crate git repo https://github.com/popasmuerf/tcp_client already has a lockfile, it will not be regenerated [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+81275a1445c7502a974118e0c69b795ab60be991" "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" "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:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+81275a1445c7502a974118e0c69b795ab60be991" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] ec5dade682c4bf1f1973d2fe908515012cbdda02748e54a796b542627a2e0673 [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" "ec5dade682c4bf1f1973d2fe908515012cbdda02748e54a796b542627a2e0673", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "ec5dade682c4bf1f1973d2fe908515012cbdda02748e54a796b542627a2e0673", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "ec5dade682c4bf1f1973d2fe908515012cbdda02748e54a796b542627a2e0673", kill_on_drop: false }` [INFO] [stdout] ec5dade682c4bf1f1973d2fe908515012cbdda02748e54a796b542627a2e0673 [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" "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:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+81275a1445c7502a974118e0c69b795ab60be991" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] f5c699fb5d576220e1f47d14145cac6131cc05da9f2ec50b6c940a9dad39b687 [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" "f5c699fb5d576220e1f47d14145cac6131cc05da9f2ec50b6c940a9dad39b687", kill_on_drop: false }` [INFO] [stderr] Compiling libc v0.2.73 [INFO] [stderr] Checking rand v0.4.6 [INFO] [stderr] Checking rand v0.3.23 [INFO] [stderr] Checking tcp_client v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused variable: `reader` [INFO] [stdout] --> src/main.rs:20:9 [INFO] [stdout] | [INFO] [stdout] 20 | let mut reader = BufReader::new(&stream); [INFO] [stdout] | ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_reader` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `reader` [INFO] [stdout] --> src/main.rs:20:9 [INFO] [stdout] | [INFO] [stdout] 20 | let mut reader = BufReader::new(&stream); [INFO] [stdout] | ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_reader` [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:20:9 [INFO] [stdout] | [INFO] [stdout] 20 | let mut reader = BufReader::new(&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: variable does not need to be mutable [INFO] [stdout] --> src/main.rs:20:9 [INFO] [stdout] | [INFO] [stdout] 20 | let mut reader = BufReader::new(&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] [stdout] warning: 2 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 3.27s [INFO] running `Command { std: "docker" "inspect" "f5c699fb5d576220e1f47d14145cac6131cc05da9f2ec50b6c940a9dad39b687", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "f5c699fb5d576220e1f47d14145cac6131cc05da9f2ec50b6c940a9dad39b687", kill_on_drop: false }` [INFO] [stdout] f5c699fb5d576220e1f47d14145cac6131cc05da9f2ec50b6c940a9dad39b687