[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] testing hawkw/async-workshop against 1.55.0 for beta-1.56-1 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhawkw%2Fasync-workshop" "/workspace/builds/worker-77/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-77/source'... [INFO] [stderr] done. 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[INFO] validating manifest of git repo https://github.com/hawkw/async-workshop on toolchain 1.55.0 [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] removed /workspace/builds/worker-77/source/.cargo/config [INFO] removed /workspace/builds/worker-77/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-77/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: "/workspace/cargo-home/bin/cargo" "+1.55.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-77/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-77/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 0fc25d4994e76c6ee365dbdd0e6a3de1aceeb81fdf8dd7ccc694c1fa150e258a [INFO] running `Command { std: "docker" "start" "-a" "0fc25d4994e76c6ee365dbdd0e6a3de1aceeb81fdf8dd7ccc694c1fa150e258a", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "0fc25d4994e76c6ee365dbdd0e6a3de1aceeb81fdf8dd7ccc694c1fa150e258a", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "0fc25d4994e76c6ee365dbdd0e6a3de1aceeb81fdf8dd7ccc694c1fa150e258a", kill_on_drop: false }` [INFO] [stdout] 0fc25d4994e76c6ee365dbdd0e6a3de1aceeb81fdf8dd7ccc694c1fa150e258a [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-77/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-77/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=warn" "-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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 7f4d2e3c09ea2f710159d4e879788a16e27db6affd2aa09f59f2475a89614884 [INFO] running `Command { std: "docker" "start" "-a" "7f4d2e3c09ea2f710159d4e879788a16e27db6affd2aa09f59f2475a89614884", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Compiling libc v0.2.62 [INFO] [stderr] Compiling cfg-if v0.1.9 [INFO] [stderr] Compiling semver-parser v0.7.0 [INFO] [stderr] Compiling autocfg v0.1.6 [INFO] [stderr] Compiling proc-macro2 v1.0.3 [INFO] [stderr] Compiling byteorder v1.3.2 [INFO] [stderr] Compiling syn v1.0.5 [INFO] [stderr] Compiling memchr v2.2.1 [INFO] [stderr] Compiling futures-core-preview v0.3.0-alpha.18 [INFO] [stderr] Compiling arrayvec v0.4.11 [INFO] [stderr] Compiling scopeguard v1.0.0 [INFO] [stderr] Compiling fnv v1.0.6 [INFO] [stderr] Compiling smallvec v0.6.10 [INFO] [stderr] Compiling nodrop v0.1.13 [INFO] [stderr] Compiling pin-utils v0.1.0-alpha.4 [INFO] [stderr] Compiling futures-io-preview v0.3.0-alpha.18 [INFO] [stderr] Compiling pin-project-internal v0.4.0-alpha.11 [INFO] [stderr] Compiling scopeguard v0.3.3 [INFO] [stderr] Compiling bitflags v1.1.0 [INFO] [stderr] Compiling unicode-width v0.1.6 [INFO] [stderr] Compiling unicode-segmentation v1.3.0 [INFO] [stderr] Compiling regex-syntax v0.6.12 [INFO] [stderr] Compiling vec_map v0.8.1 [INFO] [stderr] Compiling utf8-ranges v1.0.4 [INFO] [stderr] Compiling lazy_static v1.4.0 [INFO] [stderr] Compiling log v0.4.8 [INFO] [stderr] Compiling rand_core v0.3.1 [INFO] [stderr] Compiling rand_jitter v0.1.4 [INFO] [stderr] Compiling owning_ref v0.4.0 [INFO] [stderr] Compiling tracing-core v0.1.6 [INFO] [stderr] Compiling thread_local v0.3.6 [INFO] [stderr] Compiling tokio-sync v0.1.6 [INFO] [stderr] Compiling lock_api v0.3.1 [INFO] [stderr] Compiling textwrap v0.11.0 [INFO] [stderr] Compiling futures-sink-preview v0.3.0-alpha.18 [INFO] [stderr] Compiling rand_isaac v0.1.1 [INFO] [stderr] Compiling rand_xorshift v0.1.1 [INFO] [stderr] Compiling rand_hc v0.1.0 [INFO] [stderr] Compiling crossbeam-utils v0.6.6 [INFO] [stderr] Compiling semver v0.9.0 [INFO] [stderr] Compiling lock_api v0.1.5 [INFO] [stderr] Compiling heck v0.3.1 [INFO] [stderr] Compiling futures-channel-preview v0.3.0-alpha.18 [INFO] [stderr] Compiling tracing-log v0.1.0 [INFO] [stderr] Compiling tokio-executor v0.1.8 [INFO] [stderr] Compiling crossbeam-queue v0.1.2 [INFO] [stderr] Compiling crossbeam-channel v0.3.9 [INFO] [stderr] Compiling rand_chacha v0.1.1 [INFO] [stderr] Compiling rand_pcg v0.1.2 [INFO] [stderr] Compiling rand v0.6.5 [INFO] [stderr] Compiling num-traits v0.2.8 [INFO] [stderr] Compiling num-integer v0.1.41 [INFO] [stderr] Compiling rustc_version v0.2.3 [INFO] [stderr] Compiling tokio-timer v0.2.11 [INFO] [stderr] Compiling tokio-current-thread v0.1.6 [INFO] [stderr] Compiling iovec v0.1.2 [INFO] [stderr] Compiling num_cpus v1.10.1 [INFO] [stderr] Compiling net2 v0.2.33 [INFO] [stderr] Compiling rand_os v0.1.3 [INFO] [stderr] Compiling atty v0.2.13 [INFO] [stderr] Compiling time v0.1.42 [INFO] [stderr] Compiling memoffset v0.5.1 [INFO] [stderr] Compiling parking_lot_core v0.4.0 [INFO] [stderr] Compiling parking_lot_core v0.6.2 [INFO] [stderr] Compiling parking_lot v0.9.0 [INFO] [stderr] Compiling futures-util-preview v0.3.0-alpha.18 [INFO] [stderr] Compiling aho-corasick v0.7.6 [INFO] [stderr] Compiling mio v0.6.19 [INFO] [stderr] Compiling clap v2.33.0 [INFO] [stderr] Compiling quote v1.0.2 [INFO] [stderr] Compiling bytes v0.4.12 [INFO] [stderr] Compiling regex-automata v0.1.8 [INFO] [stderr] Compiling crossbeam-epoch v0.7.2 [INFO] [stderr] Compiling tokio-io v0.1.12 [INFO] [stderr] Compiling tokio-codec v0.1.1 [INFO] [stderr] Compiling crossbeam-deque v0.7.1 [INFO] [stderr] Compiling matchers v0.0.1 [INFO] [stderr] Compiling regex v1.3.1 [INFO] [stderr] Compiling mio-uds v0.6.7 [INFO] [stderr] Compiling chrono v0.4.9 [INFO] [stderr] Compiling tokio-threadpool v0.1.15 [INFO] [stderr] Compiling parking_lot v0.7.1 [INFO] [stderr] Compiling tokio-sync v0.2.0-alpha.5 [INFO] [stderr] Compiling futures-executor-preview v0.3.0-alpha.18 [INFO] [stderr] Compiling tokio-reactor v0.1.9 [INFO] [stderr] Compiling futures-preview v0.3.0-alpha.18 [INFO] [stderr] Compiling tokio-fs v0.1.6 [INFO] [stderr] Compiling tracing-subscriber v0.1.3 [INFO] [stderr] Compiling tokio-uds v0.2.5 [INFO] [stderr] Compiling tokio-tcp v0.1.3 [INFO] [stderr] Compiling tokio-udp v0.1.5 [INFO] [stderr] Compiling tokio v0.1.22 [INFO] [stderr] Compiling proc-macro-error v0.2.6 [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] Compiling tracing v0.1.9 [INFO] [stderr] Compiling tokio-executor v0.2.0-alpha.5 [INFO] [stderr] Compiling pin-project v0.4.0-alpha.11 [INFO] [stderr] Compiling tokio-io v0.2.0-alpha.5 [INFO] [stderr] Compiling structopt v0.3.2 [INFO] [stderr] Compiling tokio-codec v0.2.0-alpha.5 [INFO] [stderr] Compiling tokio-fs v0.2.0-alpha.5 [INFO] [stderr] Compiling tokio-timer v0.3.0-alpha.5 [INFO] [stderr] Compiling tokio-net v0.2.0-alpha.5 [INFO] [stderr] Compiling tokio v0.2.0-alpha.5 [INFO] [stderr] Compiling tracing-futures v0.0.1-alpha.2 (https://github.com/tokio-rs/tracing?rev=9f1126a00d105ff85f5b65fc6457699430b1bed4#9f1126a0) [INFO] [stderr] Compiling client v0.0.0 (/opt/rustwide/workdir/client) [INFO] [stderr] Compiling server v0.0.0 (/opt/rustwide/workdir/server) [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] Finished dev [unoptimized + debuginfo] target(s) in 49.39s [INFO] running `Command { std: "docker" "inspect" "7f4d2e3c09ea2f710159d4e879788a16e27db6affd2aa09f59f2475a89614884", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "7f4d2e3c09ea2f710159d4e879788a16e27db6affd2aa09f59f2475a89614884", kill_on_drop: false }` [INFO] [stdout] 7f4d2e3c09ea2f710159d4e879788a16e27db6affd2aa09f59f2475a89614884 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-77/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-77/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=warn" "-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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] ab72b2502f593191ada8c3a419ce41add40b435dda494445678c44a14c3255e9 [INFO] running `Command { std: "docker" "start" "-a" "ab72b2502f593191ada8c3a419ce41add40b435dda494445678c44a14c3255e9", kill_on_drop: false }` [INFO] [stderr] Compiling client v0.0.0 (/opt/rustwide/workdir/client) [INFO] [stderr] Compiling server v0.0.0 (/opt/rustwide/workdir/server) [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] Finished test [unoptimized + debuginfo] target(s) in 2.33s [INFO] running `Command { std: "docker" "inspect" "ab72b2502f593191ada8c3a419ce41add40b435dda494445678c44a14c3255e9", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "ab72b2502f593191ada8c3a419ce41add40b435dda494445678c44a14c3255e9", kill_on_drop: false }` [INFO] [stdout] ab72b2502f593191ada8c3a419ce41add40b435dda494445678c44a14c3255e9 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-77/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-77/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=warn" "-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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "test" "--frozen", kill_on_drop: false }` [INFO] [stdout] 04df7b97d77cdedeb166a29fedd68f96d3f0d4f763473175724c242faf6ebc7a [INFO] running `Command { std: "docker" "start" "-a" "04df7b97d77cdedeb166a29fedd68f96d3f0d4f763473175724c242faf6ebc7a", kill_on_drop: false }` [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> client/src/../solutions/client.rs:10:39 [INFO] [stderr] | [INFO] [stderr] 10 | pub async fn run_client(user: String, mut stream: TcpStream) -> Result<(), Error> { [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: `client` (bin "client" test) generated 1 warning [INFO] [stderr] Finished test [unoptimized + debuginfo] target(s) in 0.52s [INFO] [stderr] Running unittests (/opt/rustwide/target/debug/deps/client-5334e716880f82ad) [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; finished in 0.00s [INFO] [stdout] [INFO] [stderr] Running unittests (/opt/rustwide/target/debug/deps/server-b914412e4a1e30ab) [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; finished in 0.00s [INFO] [stdout] [INFO] running `Command { std: "docker" "inspect" "04df7b97d77cdedeb166a29fedd68f96d3f0d4f763473175724c242faf6ebc7a", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "04df7b97d77cdedeb166a29fedd68f96d3f0d4f763473175724c242faf6ebc7a", kill_on_drop: false }` [INFO] [stdout] 04df7b97d77cdedeb166a29fedd68f96d3f0d4f763473175724c242faf6ebc7a