[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] building hawkw/async-workshop against master#ad85bc524b1ad696e42061ad8338d382dffbdbe5 for pr-146237-1 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhawkw%2Fasync-workshop" "/workspace/builds/worker-7-tc1/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc1/source'... 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[INFO] removed /workspace/builds/worker-7-tc1/source/.cargo/config [INFO] removed /workspace/builds/worker-7-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-7-tc1/source/Cargo.toml [INFO] validating manifest of git repo https://github.com/hawkw/async-workshop on toolchain ad85bc524b1ad696e42061ad8338d382dffbdbe5 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ad85bc524b1ad696e42061ad8338d382dffbdbe5" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [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" "+ad85bc524b1ad696e42061ad8338d382dffbdbe5" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Updating crates.io index [INFO] [stderr] Updating git repository `https://github.com/tokio-rs/tracing` [INFO] [stderr] Downloading crates ... [INFO] [stderr] Downloaded time v0.1.42 [INFO] [stderr] Downloaded tracing-attributes v0.1.3 [INFO] [stderr] Downloaded tracing-core v0.1.6 [INFO] [stderr] Downloaded tokio-io v0.1.12 [INFO] [stderr] Downloaded futures-executor-preview v0.3.0-alpha.18 [INFO] [stderr] Downloaded futures-util-preview v0.3.0-alpha.18 [INFO] [stderr] Downloaded proc-macro-error v0.2.6 [INFO] [stderr] Downloaded heck v0.3.1 [INFO] [stderr] Downloaded tokio-fs v0.1.6 [INFO] [stderr] Downloaded crossbeam-channel v0.3.9 [INFO] [stderr] Downloaded syn v1.0.5 [INFO] [stderr] Downloaded tokio-codec v0.1.1 [INFO] [stderr] Downloaded futures v0.1.29 [INFO] [stderr] Downloaded tokio-reactor v0.1.9 [INFO] [stderr] Downloaded tokio-uds v0.2.5 [INFO] [stderr] Downloaded mio-uds v0.6.7 [INFO] [stderr] Downloaded lock_api v0.3.1 [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-core-preview v0.3.0-alpha.18 [INFO] [stderr] Downloaded futures-sink-preview v0.3.0-alpha.18 [INFO] [stderr] Downloaded pin-utils v0.1.0-alpha.4 [INFO] [stderr] Downloaded proc-macro2 v1.0.3 [INFO] [stderr] Downloaded regex-syntax v0.6.12 [INFO] [stderr] Downloaded tokio-threadpool v0.1.15 [INFO] [stderr] Downloaded tokio-timer v0.2.11 [INFO] [stderr] Downloaded tokio-udp v0.1.5 [INFO] [stderr] Downloaded tokio-executor v0.1.8 [INFO] [stderr] Downloaded tokio-sync v0.1.6 [INFO] [stderr] Downloaded crossbeam-deque v0.7.1 [INFO] [stderr] Downloaded chrono v0.4.9 [INFO] [stderr] Downloaded regex-automata v0.1.8 [INFO] [stderr] Downloaded regex v1.3.1 [INFO] [stderr] Downloaded tokio-tcp v0.1.3 [INFO] [stderr] Downloaded structopt v0.3.2 [INFO] [stderr] Downloaded tokio-current-thread v0.1.6 [INFO] [stderr] Downloaded tracing v0.1.9 [INFO] [stderr] Downloaded tracing-subscriber v0.1.3 [INFO] [stderr] Downloaded tokio-fs v0.2.0-alpha.5 [INFO] [stderr] Downloaded futures-preview v0.3.0-alpha.18 [INFO] [stderr] Downloaded structopt-derive v0.3.2 [INFO] [stderr] Downloaded tokio-sync v0.2.0-alpha.5 [INFO] [stderr] Downloaded tracing-log v0.1.0 [INFO] [stderr] Downloaded tokio-macros v0.2.0-alpha.5 [INFO] [stderr] Downloaded pin-project v0.4.0-alpha.11 [INFO] [stderr] Downloaded tokio-codec v0.2.0-alpha.5 [INFO] [stderr] Downloaded tokio-net v0.2.0-alpha.5 [INFO] [stderr] Downloaded pin-project-internal v0.4.0-alpha.11 [INFO] [stderr] Downloaded tokio-executor v0.2.0-alpha.5 [INFO] [stderr] Downloaded tokio-timer v0.3.0-alpha.5 [INFO] [stderr] Downloaded tokio v0.2.0-alpha.5 [INFO] [stderr] Downloaded tokio-io v0.2.0-alpha.5 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+ad85bc524b1ad696e42061ad8338d382dffbdbe5" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] f0d6455ba551de6566a8d951832372c52c2aa3ecf6c43f98d1487985411b4b51 [INFO] running `Command { std: "docker" "start" "-a" "f0d6455ba551de6566a8d951832372c52c2aa3ecf6c43f98d1487985411b4b51", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "f0d6455ba551de6566a8d951832372c52c2aa3ecf6c43f98d1487985411b4b51", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "f0d6455ba551de6566a8d951832372c52c2aa3ecf6c43f98d1487985411b4b51", kill_on_drop: false }` [INFO] [stdout] f0d6455ba551de6566a8d951832372c52c2aa3ecf6c43f98d1487985411b4b51 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+ad85bc524b1ad696e42061ad8338d382dffbdbe5" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] ea87b585189f1d930cd17aa67b9c6ae5443dd61bfcf6a5b545ccb5ffbd7a2c16 [INFO] running `Command { std: "docker" "start" "-a" "ea87b585189f1d930cd17aa67b9c6ae5443dd61bfcf6a5b545ccb5ffbd7a2c16", kill_on_drop: false }` [INFO] [stderr] Compiling spin v0.5.2 [INFO] [stderr] Compiling proc-macro2 v1.0.3 [INFO] [stderr] Compiling syn v1.0.5 [INFO] [stderr] Compiling futures-core-preview v0.3.0-alpha.18 [INFO] [stderr] Compiling futures v0.1.29 [INFO] [stderr] Compiling pin-utils v0.1.0-alpha.4 [INFO] [stderr] Compiling bytes v0.4.12 [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 parking_lot_core v0.6.2 [INFO] [stderr] Compiling mio-uds v0.6.7 [INFO] [stderr] Compiling parking_lot v0.9.0 [INFO] [stderr] Compiling lock_api v0.3.1 [INFO] [stderr] Compiling num-traits v0.2.8 [INFO] [stderr] Compiling num-integer v0.1.41 [INFO] [stderr] Compiling regex-syntax v0.6.12 [INFO] [stderr] Compiling lazy_static v1.4.0 [INFO] [stderr] Compiling unicode-segmentation v1.3.0 [INFO] [stderr] Compiling crossbeam-utils v0.6.6 [INFO] [stderr] Compiling tracing-core v0.1.6 [INFO] [stderr] Compiling futures-sink-preview v0.3.0-alpha.18 [INFO] [stderr] Compiling thread_local v0.3.6 [INFO] [stderr] Compiling time v0.1.42 [INFO] [stderr] Compiling futures-channel-preview v0.3.0-alpha.18 [INFO] [stderr] Compiling tracing-log v0.1.0 [INFO] [stderr] Compiling crossbeam-epoch v0.7.2 [INFO] [stderr] Compiling crossbeam-queue v0.1.2 [INFO] [stderr] Compiling crossbeam-channel v0.3.9 [INFO] [stderr] Compiling futures-util-preview v0.3.0-alpha.18 [INFO] [stderr] Compiling crossbeam-deque v0.7.1 [INFO] [stderr] Compiling heck v0.3.1 [INFO] [stderr] Compiling quote v1.0.2 [INFO] [stderr] Compiling tokio-executor v0.1.8 [INFO] [stderr] Compiling tokio-io v0.1.12 [INFO] [stderr] Compiling tokio-sync v0.1.6 [INFO] [stderr] Compiling tokio-codec v0.1.1 [INFO] [stderr] Compiling tokio-threadpool v0.1.15 [INFO] [stderr] Compiling tokio-timer v0.2.11 [INFO] [stderr] Compiling tokio-current-thread v0.1.6 [INFO] [stderr] Compiling chrono v0.4.9 [INFO] [stderr] Compiling tokio-reactor v0.1.9 [INFO] [stderr] Compiling regex-automata v0.1.8 [INFO] [stderr] Compiling regex v1.3.1 [INFO] [stderr] Compiling tokio-fs v0.1.6 [INFO] [stderr] Compiling tokio-udp v0.1.5 [INFO] [stderr] Compiling tokio-uds v0.2.5 [INFO] [stderr] Compiling tokio-tcp v0.1.3 [INFO] [stderr] Compiling tokio v0.1.22 [INFO] [stderr] Compiling tokio-sync v0.2.0-alpha.5 [INFO] [stderr] Compiling futures-executor-preview v0.3.0-alpha.18 [INFO] [stderr] Compiling matchers v0.0.1 [INFO] [stderr] Compiling futures-preview v0.3.0-alpha.18 [INFO] [stderr] Compiling tracing-subscriber v0.1.3 [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 pin-project v0.4.0-alpha.11 [INFO] [stderr] Compiling tokio-io v0.2.0-alpha.5 [INFO] [stderr] Compiling tokio-codec v0.2.0-alpha.5 [INFO] [stderr] Compiling tokio-executor v0.2.0-alpha.5 [INFO] [stderr] Compiling structopt v0.3.2 [INFO] [stderr] Compiling tokio-net 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 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 server v0.0.0 (/opt/rustwide/workdir/server) [INFO] [stderr] Compiling 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)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 25.41s [INFO] running `Command { std: "docker" "inspect" "ea87b585189f1d930cd17aa67b9c6ae5443dd61bfcf6a5b545ccb5ffbd7a2c16", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "ea87b585189f1d930cd17aa67b9c6ae5443dd61bfcf6a5b545ccb5ffbd7a2c16", kill_on_drop: false }` [INFO] [stdout] ea87b585189f1d930cd17aa67b9c6ae5443dd61bfcf6a5b545ccb5ffbd7a2c16 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+ad85bc524b1ad696e42061ad8338d382dffbdbe5" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] a0570a4939bdd58ead20e379b210ea9ba71fe0d73467618f409e746298a4bb56 [INFO] running `Command { std: "docker" "start" "-a" "a0570a4939bdd58ead20e379b210ea9ba71fe0d73467618f409e746298a4bb56", 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)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `test` profile [unoptimized + debuginfo] target(s) in 1.51s [INFO] running `Command { std: "docker" "inspect" "a0570a4939bdd58ead20e379b210ea9ba71fe0d73467618f409e746298a4bb56", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "a0570a4939bdd58ead20e379b210ea9ba71fe0d73467618f409e746298a4bb56", kill_on_drop: false }` [INFO] [stdout] a0570a4939bdd58ead20e379b210ea9ba71fe0d73467618f409e746298a4bb56