[INFO] cloning repository https://github.com/hawkw/async-workshop [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/hawkw/async-workshop" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhawkw%2Fasync-workshop", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhawkw%2Fasync-workshop'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 135a3e6edc840940ac3ae697825fc1e7b2495524 [INFO] checking hawkw/async-workshop against master#1f12b9b0fdbe735968ac002792a720f0ba4faca6 for crater-rollup-uwu [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhawkw%2Fasync-workshop" "/workspace/builds/worker-5-tc1/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc1/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/hawkw/async-workshop on toolchain 1f12b9b0fdbe735968ac002792a720f0ba4faca6 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] removed /workspace/builds/worker-5-tc1/source/.cargo/config [INFO] removed /workspace/builds/worker-5-tc1/source/rust-toolchain [INFO] started tweaking git repo https://github.com/hawkw/async-workshop [INFO] finished tweaking git repo https://github.com/hawkw/async-workshop [INFO] tweaked toml for git repo https://github.com/hawkw/async-workshop written to /workspace/builds/worker-5-tc1/source/Cargo.toml [INFO] crate git repo https://github.com/hawkw/async-workshop 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" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Updating git repository `https://github.com/tokio-rs/tracing` [INFO] [stderr] Updating crates.io index [INFO] [stderr] Downloading crates ... [INFO] [stderr] Downloaded tracing v0.1.9 [INFO] [stderr] Downloaded tracing-log v0.1.0 [INFO] [stderr] Downloaded tracing-attributes v0.1.3 [INFO] [stderr] Downloaded tokio v0.2.0-alpha.5 [INFO] [stderr] Downloaded tokio-timer v0.3.0-alpha.5 [INFO] [stderr] Downloaded structopt-derive v0.3.2 [INFO] [stderr] Downloaded pin-project v0.4.0-alpha.11 [INFO] [stderr] Downloaded futures-executor-preview v0.3.0-alpha.18 [INFO] [stderr] Downloaded structopt v0.3.2 [INFO] [stderr] Downloaded tokio-net v0.2.0-alpha.5 [INFO] [stderr] Downloaded futures-util-preview v0.3.0-alpha.18 [INFO] [stderr] Downloaded tokio-executor v0.2.0-alpha.5 [INFO] [stderr] Downloaded futures-preview v0.3.0-alpha.18 [INFO] [stderr] Downloaded pin-project-internal v0.4.0-alpha.11 [INFO] [stderr] Downloaded tokio-io v0.2.0-alpha.5 [INFO] [stderr] Downloaded futures-channel-preview v0.3.0-alpha.18 [INFO] [stderr] Downloaded futures-io-preview v0.3.0-alpha.18 [INFO] [stderr] Downloaded futures-sink-preview v0.3.0-alpha.18 [INFO] [stderr] Downloaded futures-core-preview v0.3.0-alpha.18 [INFO] [stderr] Downloaded tokio-sync v0.2.0-alpha.5 [INFO] [stderr] Downloaded tracing-core v0.1.6 [INFO] [stderr] Downloaded tokio-fs v0.2.0-alpha.5 [INFO] [stderr] Downloaded tokio-macros v0.2.0-alpha.5 [INFO] [stderr] Downloaded tokio-codec v0.2.0-alpha.5 [INFO] [stderr] Downloaded tracing-subscriber v0.1.3 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 60e74eb4e42663612c157c52cc385783c7d1537093eb64f4427ad5db2f177beb [INFO] running `Command { std: "docker" "start" "-a" "60e74eb4e42663612c157c52cc385783c7d1537093eb64f4427ad5db2f177beb", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "60e74eb4e42663612c157c52cc385783c7d1537093eb64f4427ad5db2f177beb", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "60e74eb4e42663612c157c52cc385783c7d1537093eb64f4427ad5db2f177beb", kill_on_drop: false }` [INFO] [stdout] 60e74eb4e42663612c157c52cc385783c7d1537093eb64f4427ad5db2f177beb [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 6524c78e2f5a082a2f75ed256dfccf36c66b8eef76aa5e6f9c0bf43121d14b88 [INFO] running `Command { std: "docker" "start" "-a" "6524c78e2f5a082a2f75ed256dfccf36c66b8eef76aa5e6f9c0bf43121d14b88", kill_on_drop: false }` [INFO] [stderr] Compiling libc v0.2.62 [INFO] [stderr] Checking cfg-if v0.1.9 [INFO] [stderr] Compiling semver-parser v0.7.0 [INFO] [stderr] Compiling autocfg v0.1.6 [INFO] [stderr] Compiling log v0.4.8 [INFO] [stderr] Checking slab v0.4.2 [INFO] [stderr] Compiling proc-macro2 v1.0.3 [INFO] [stderr] Checking lazy_static v1.4.0 [INFO] [stderr] Compiling byteorder v1.3.2 [INFO] [stderr] Compiling unicode-xid v0.2.0 [INFO] [stderr] Checking crossbeam-utils v0.6.6 [INFO] [stderr] Compiling semver v0.9.0 [INFO] [stderr] Compiling syn v1.0.5 [INFO] [stderr] Checking rand_core v0.4.2 [INFO] [stderr] Compiling memchr v2.2.1 [INFO] [stderr] Checking futures-core-preview v0.3.0-alpha.18 [INFO] [stderr] Compiling rustc_version v0.2.3 [INFO] [stderr] Checking fnv v1.0.6 [INFO] [stderr] Checking rand_core v0.3.1 [INFO] [stderr] Checking smallvec v0.6.10 [INFO] [stderr] Checking scopeguard v1.0.0 [INFO] [stderr] Compiling arrayvec v0.4.11 [INFO] [stderr] Checking futures-sink-preview v0.3.0-alpha.18 [INFO] [stderr] Compiling memoffset v0.5.1 [INFO] [stderr] Checking nodrop v0.1.13 [INFO] [stderr] Checking pin-utils v0.1.0-alpha.4 [INFO] [stderr] Checking iovec v0.1.2 [INFO] [stderr] Checking num_cpus v1.10.1 [INFO] [stderr] Checking futures v0.1.29 [INFO] [stderr] Compiling quote v1.0.2 [INFO] [stderr] Compiling rand_chacha v0.1.1 [INFO] [stderr] Checking bytes v0.4.12 [INFO] [stderr] Compiling rand_pcg v0.1.2 [INFO] [stderr] Checking net2 v0.2.33 [INFO] [stderr] Checking futures-channel-preview v0.3.0-alpha.18 [INFO] [stderr] Compiling rand v0.6.5 [INFO] [stderr] Checking futures-io-preview v0.3.0-alpha.18 [INFO] [stderr] Checking mio v0.6.19 [INFO] [stderr] Checking crossbeam-epoch v0.7.2 [INFO] [stderr] Checking futures-util-preview v0.3.0-alpha.18 [INFO] [stderr] Checking rand_os v0.1.3 [INFO] [stderr] Checking rand_xorshift v0.1.1 [INFO] [stderr] Checking rand_hc v0.1.0 [INFO] [stderr] Checking rand_isaac v0.1.1 [INFO] [stderr] Checking rand_jitter v0.1.4 [INFO] [stderr] Checking crossbeam-deque v0.7.1 [INFO] [stderr] Checking crossbeam-queue v0.1.2 [INFO] [stderr] Checking tracing-core v0.1.6 [INFO] [stderr] Compiling pin-project-internal v0.4.0-alpha.11 [INFO] [stderr] Checking stable_deref_trait v1.1.1 [INFO] [stderr] Checking owning_ref v0.4.0 [INFO] [stderr] Compiling parking_lot_core v0.4.0 [INFO] [stderr] Compiling parking_lot_core v0.6.2 [INFO] [stderr] Checking crossbeam-channel v0.3.9 [INFO] [stderr] Checking scopeguard v0.3.3 [INFO] [stderr] Checking lock_api v0.1.5 [INFO] [stderr] Checking mio-uds v0.6.7 [INFO] [stderr] Checking tokio-executor v0.1.8 [INFO] [stderr] Checking tokio-io v0.1.12 [INFO] [stderr] Compiling parking_lot v0.9.0 [INFO] [stderr] Checking tokio-sync v0.1.6 [INFO] [stderr] Checking lock_api v0.3.1 [INFO] [stderr] Compiling bitflags v1.1.0 [INFO] [stderr] Compiling num-traits v0.2.8 [INFO] [stderr] Checking unicode-width v0.1.6 [INFO] [stderr] Checking ansi_term v0.11.0 [INFO] [stderr] Compiling unicode-segmentation v1.3.0 [INFO] [stderr] Checking textwrap v0.11.0 [INFO] [stderr] Checking tokio-codec v0.1.1 [INFO] [stderr] Checking parking_lot v0.7.1 [INFO] [stderr] Checking atty v0.2.13 [INFO] [stderr] Compiling num-integer v0.1.41 [INFO] [stderr] Checking regex-syntax v0.6.12 [INFO] [stderr] Checking vec_map v0.8.1 [INFO] [stderr] Checking tokio-reactor v0.1.9 [INFO] [stderr] Checking clap v2.33.0 [INFO] [stderr] Checking tokio-sync v0.2.0-alpha.5 [INFO] [stderr] Compiling heck v0.3.1 [INFO] [stderr] Checking futures-executor-preview v0.3.0-alpha.18 [INFO] [stderr] Checking tokio-threadpool v0.1.15 [INFO] [stderr] Checking utf8-ranges v1.0.4 [INFO] [stderr] Checking futures-preview v0.3.0-alpha.18 [INFO] [stderr] Checking tokio-tcp v0.1.3 [INFO] [stderr] Checking tokio-udp v0.1.5 [INFO] [stderr] Checking tokio-uds v0.2.5 [INFO] [stderr] Checking tokio-current-thread v0.1.6 [INFO] [stderr] Checking tokio-timer v0.2.11 [INFO] [stderr] Checking aho-corasick v0.7.6 [INFO] [stderr] Checking time v0.1.42 [INFO] [stderr] Checking tokio-fs v0.1.6 [INFO] [stderr] Checking thread_local v0.3.6 [INFO] [stderr] Checking tracing-log v0.1.0 [INFO] [stderr] Checking chrono v0.4.9 [INFO] [stderr] Checking tokio v0.1.22 [INFO] [stderr] Checking regex-automata v0.1.8 [INFO] [stderr] Checking regex v1.3.1 [INFO] [stderr] Compiling proc-macro-error v0.2.6 [INFO] [stderr] Checking matchers v0.0.1 [INFO] [stderr] Compiling tracing-attributes v0.1.3 [INFO] [stderr] Compiling tokio-macros v0.2.0-alpha.5 [INFO] [stderr] Compiling structopt-derive v0.3.2 [INFO] [stderr] Checking tracing-subscriber v0.1.3 [INFO] [stderr] Checking tracing v0.1.9 [INFO] [stderr] Checking tokio-executor v0.2.0-alpha.5 [INFO] [stderr] Checking structopt v0.3.2 [INFO] [stderr] Checking pin-project v0.4.0-alpha.11 [INFO] [stderr] Checking tokio-io v0.2.0-alpha.5 [INFO] [stderr] Checking tokio-codec v0.2.0-alpha.5 [INFO] [stderr] Checking tokio-fs v0.2.0-alpha.5 [INFO] [stderr] Checking tokio-timer v0.3.0-alpha.5 [INFO] [stderr] Checking tokio-net v0.2.0-alpha.5 [INFO] [stderr] Checking tokio v0.2.0-alpha.5 [INFO] [stderr] Checking tracing-futures v0.0.1-alpha.2 (https://github.com/tokio-rs/tracing?rev=9f1126a00d105ff85f5b65fc6457699430b1bed4#9f1126a0) [INFO] [stderr] Checking client v0.0.0 (/opt/rustwide/workdir/client) [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> client/src/../solutions/client.rs:10:39 [INFO] [stdout] | [INFO] [stdout] 10 | pub async fn run_client(user: String, mut stream: TcpStream) -> Result<(), Error> { [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] --> client/src/../solutions/client.rs:10:39 [INFO] [stdout] | [INFO] [stdout] 10 | pub async fn run_client(user: String, mut stream: TcpStream) -> Result<(), Error> { [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: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Checking server v0.0.0 (/opt/rustwide/workdir/server) [INFO] [stdout] warning: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 7.63s [INFO] running `Command { std: "docker" "inspect" "6524c78e2f5a082a2f75ed256dfccf36c66b8eef76aa5e6f9c0bf43121d14b88", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "6524c78e2f5a082a2f75ed256dfccf36c66b8eef76aa5e6f9c0bf43121d14b88", kill_on_drop: false }` [INFO] [stdout] 6524c78e2f5a082a2f75ed256dfccf36c66b8eef76aa5e6f9c0bf43121d14b88