[INFO] cloning repository https://github.com/ultrasaurus/irc-tokio [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ultrasaurus/irc-tokio" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fultrasaurus%2Firc-tokio", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fultrasaurus%2Firc-tokio'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 6fd157604121cd5627a50abc364fe3d2fe96895b [INFO] checking ultrasaurus/irc-tokio against master#bca37a20bd376ce3fd138e7cdee7fe704e0f8814 for pr-139493-3 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fultrasaurus%2Firc-tokio" "/workspace/builds/worker-0-tc1/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc1/source'... [INFO] [stderr] done. [INFO] started tweaking git repo https://github.com/ultrasaurus/irc-tokio [INFO] finished tweaking git repo https://github.com/ultrasaurus/irc-tokio [INFO] tweaked toml for git repo https://github.com/ultrasaurus/irc-tokio written to /workspace/builds/worker-0-tc1/source/Cargo.toml [INFO] validating manifest of git repo https://github.com/ultrasaurus/irc-tokio on toolchain bca37a20bd376ce3fd138e7cdee7fe704e0f8814 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+bca37a20bd376ce3fd138e7cdee7fe704e0f8814" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] crate git repo https://github.com/ultrasaurus/irc-tokio already has a lockfile, it will not be regenerated [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+bca37a20bd376ce3fd138e7cdee7fe704e0f8814" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Downloading crates ... [INFO] [stderr] Downloaded tokio-util v0.2.0 [INFO] [stderr] Downloaded pin-project-lite v0.1.1 [INFO] [stderr] Downloaded futures-sink v0.3.4 [INFO] [stderr] Downloaded futures-core v0.3.4 [INFO] [stderr] Downloaded futures v0.3.4 [INFO] [stderr] Downloaded futures-io v0.3.4 [INFO] [stderr] Downloaded futures-channel v0.3.4 [INFO] [stderr] Downloaded futures-executor v0.3.4 [INFO] [stderr] Downloaded futures-task v0.3.4 [INFO] [stderr] Downloaded bytes v0.5.2 [INFO] [stderr] Downloaded futures-macro v0.3.4 [INFO] [stderr] Downloaded tokio-test v0.2.0 [INFO] [stderr] Downloaded tokio-macros v0.2.4 [INFO] [stderr] Downloaded tokio v0.2.11 [INFO] [stderr] Downloaded futures-util v0.3.4 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:aa71247004a7fa38d13ec170f48f06cdedf5bc50b2a8645e56ed7e992e6fa513" "/opt/rustwide/cargo-home/bin/cargo" "+bca37a20bd376ce3fd138e7cdee7fe704e0f8814" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] d01f3bc6b59e7016f056156aebccb417ce600b4a7e6599b2208982eda7a64f09 [INFO] running `Command { std: "docker" "start" "-a" "d01f3bc6b59e7016f056156aebccb417ce600b4a7e6599b2208982eda7a64f09", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "d01f3bc6b59e7016f056156aebccb417ce600b4a7e6599b2208982eda7a64f09", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "d01f3bc6b59e7016f056156aebccb417ce600b4a7e6599b2208982eda7a64f09", kill_on_drop: false }` [INFO] [stdout] d01f3bc6b59e7016f056156aebccb417ce600b4a7e6599b2208982eda7a64f09 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/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" "RUSTDOCFLAGS=--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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:aa71247004a7fa38d13ec170f48f06cdedf5bc50b2a8645e56ed7e992e6fa513" "/opt/rustwide/cargo-home/bin/cargo" "+bca37a20bd376ce3fd138e7cdee7fe704e0f8814" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 3d6f1b8b2530963d9e2ba9e3c0d55719fcd1089fa121675ca3a50a27baa0f6cf [INFO] running `Command { std: "docker" "start" "-a" "3d6f1b8b2530963d9e2ba9e3c0d55719fcd1089fa121675ca3a50a27baa0f6cf", kill_on_drop: false }` [INFO] [stderr] Compiling syn v1.0.8 [INFO] [stderr] Compiling libc v0.2.65 [INFO] [stderr] Checking futures-core v0.3.4 [INFO] [stderr] Checking futures-sink v0.3.4 [INFO] [stderr] Checking arc-swap v0.4.4 [INFO] [stderr] Checking fnv v1.0.6 [INFO] [stderr] Checking futures-io v0.3.4 [INFO] [stderr] Checking pin-project-lite v0.1.1 [INFO] [stderr] Checking bytes v0.5.2 [INFO] [stderr] Checking futures-task v0.3.4 [INFO] [stderr] Checking futures-channel v0.3.4 [INFO] [stderr] Checking iovec v0.1.4 [INFO] [stderr] Checking net2 v0.2.33 [INFO] [stderr] Checking signal-hook-registry v1.2.0 [INFO] [stderr] Checking num_cpus v1.11.1 [INFO] [stderr] Checking mio v0.6.21 [INFO] [stderr] Checking mio-uds v0.6.7 [INFO] [stderr] Compiling proc-macro-hack v0.5.11 [INFO] [stderr] Compiling tokio-macros v0.2.4 [INFO] [stderr] Checking tokio v0.2.11 [INFO] [stderr] Compiling futures-macro v0.3.4 [INFO] [stderr] Checking futures-util v0.3.4 [INFO] [stderr] Checking futures-executor v0.3.4 [INFO] [stderr] Checking tokio-util v0.2.0 [INFO] [stderr] Checking tokio-test v0.2.0 [INFO] [stderr] Checking futures v0.3.4 [INFO] [stderr] Checking irc-tokio v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused variable: `irc` [INFO] [stdout] --> examples/2b-session-struct.rs:58:9 [INFO] [stdout] | [INFO] [stdout] 58 | let irc = Session::connect(addr, &irc_user, &irc_pass).await?; [INFO] [stdout] | ^^^ help: if this is intentional, prefix it with an underscore: `_irc` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `nick` is never read [INFO] [stdout] --> examples/2b-session-struct.rs:13:5 [INFO] [stdout] | [INFO] [stdout] 12 | struct Session<'a> { [INFO] [stdout] | ------- field in this struct [INFO] [stdout] 13 | nick: &'a str, [INFO] [stdout] | ^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `Session` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: panic message is not a string literal [INFO] [stdout] --> examples/2b-session-struct.rs:25:14 [INFO] [stdout] | [INFO] [stdout] 25 | panic!(error_str) // not sure what's a good pattern for returning an error here [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: for more information, see [INFO] [stdout] = note: this usage of `panic!()` is deprecated; it will be a hard error in Rust 2021 [INFO] [stdout] = note: for more information, see [INFO] [stdout] = note: `#[warn(non_fmt_panics)]` (part of `#[warn(rust_2021_compatibility)]`) on by default [INFO] [stdout] help: add a "{}" format string to `Display` the message [INFO] [stdout] | [INFO] [stdout] 25 | panic!("{}", error_str) // not sure what's a good pattern for returning an error here [INFO] [stdout] | +++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 9.71s [INFO] running `Command { std: "docker" "inspect" "3d6f1b8b2530963d9e2ba9e3c0d55719fcd1089fa121675ca3a50a27baa0f6cf", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "3d6f1b8b2530963d9e2ba9e3c0d55719fcd1089fa121675ca3a50a27baa0f6cf", kill_on_drop: false }` [INFO] [stdout] 3d6f1b8b2530963d9e2ba9e3c0d55719fcd1089fa121675ca3a50a27baa0f6cf