[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 1.59.0 for beta-1.60-1 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhawkw%2Fasync-workshop" "/workspace/builds/worker-4/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'... [INFO] [stderr] done. 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[INFO] validating manifest of git repo https://github.com/hawkw/async-workshop on toolchain 1.59.0 [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.59.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] removed /workspace/builds/worker-4/source/.cargo/config [INFO] removed /workspace/builds/worker-4/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-4/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" "+1.59.0" "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-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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] c71bb6a8928d51c42e1c1f59363dc33cdd6eb6dfe52521d257e27021a248c57e [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" "c71bb6a8928d51c42e1c1f59363dc33cdd6eb6dfe52521d257e27021a248c57e", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "c71bb6a8928d51c42e1c1f59363dc33cdd6eb6dfe52521d257e27021a248c57e", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "c71bb6a8928d51c42e1c1f59363dc33cdd6eb6dfe52521d257e27021a248c57e", kill_on_drop: false }` [INFO] [stdout] c71bb6a8928d51c42e1c1f59363dc33cdd6eb6dfe52521d257e27021a248c57e [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=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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] [stdout] 639472063a792dc10b142e953a66ba8726250a81dbc0079b01df35d69b45df11 [INFO] running `Command { std: "docker" "start" "-a" "639472063a792dc10b142e953a66ba8726250a81dbc0079b01df35d69b45df11", kill_on_drop: false }` [INFO] [stderr] Compiling libc v0.2.62 [INFO] [stderr] Compiling autocfg v0.1.6 [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 arrayvec v0.4.11 [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 stable_deref_trait v1.1.1 [INFO] [stderr] Compiling regex-syntax v0.6.12 [INFO] [stderr] Compiling unicode-width v0.1.6 [INFO] [stderr] Compiling unicode-segmentation v1.3.0 [INFO] [stderr] Compiling utf8-ranges v1.0.4 [INFO] [stderr] Compiling lazy_static v1.4.0 [INFO] [stderr] Compiling lock_api v0.3.1 [INFO] [stderr] Compiling tokio-sync v0.1.6 [INFO] [stderr] Compiling owning_ref v0.4.0 [INFO] [stderr] Compiling crossbeam-utils v0.6.6 [INFO] [stderr] Compiling tracing-core v0.1.6 [INFO] [stderr] Compiling thread_local v0.3.6 [INFO] [stderr] Compiling memoffset v0.5.1 [INFO] [stderr] Compiling parking_lot_core v0.4.0 [INFO] [stderr] Compiling textwrap v0.11.0 [INFO] [stderr] Compiling futures-sink-preview v0.3.0-alpha.18 [INFO] [stderr] Compiling lock_api v0.1.5 [INFO] [stderr] Compiling tracing-log v0.1.0 [INFO] [stderr] Compiling heck v0.3.1 [INFO] [stderr] Compiling futures-channel-preview v0.3.0-alpha.18 [INFO] [stderr] Compiling crossbeam-queue v0.1.2 [INFO] [stderr] Compiling tokio-executor v0.1.8 [INFO] [stderr] Compiling crossbeam-channel v0.3.9 [INFO] [stderr] Compiling rand_pcg v0.1.2 [INFO] [stderr] Compiling rand_chacha v0.1.1 [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 futures-util-preview v0.3.0-alpha.18 [INFO] [stderr] Compiling tokio-current-thread v0.1.6 [INFO] [stderr] Compiling tokio-timer v0.2.11 [INFO] [stderr] Compiling crossbeam-epoch v0.7.2 [INFO] [stderr] Compiling quote v1.0.2 [INFO] [stderr] Compiling iovec v0.1.2 [INFO] [stderr] Compiling num_cpus v1.10.1 [INFO] [stderr] Compiling rand_os v0.1.3 [INFO] [stderr] Compiling net2 v0.2.33 [INFO] [stderr] Compiling parking_lot_core v0.6.2 [INFO] [stderr] Compiling atty v0.2.13 [INFO] [stderr] Compiling time v0.1.42 [INFO] [stderr] Compiling crossbeam-deque v0.7.1 [INFO] [stderr] Compiling bytes v0.4.12 [INFO] [stderr] Compiling clap v2.33.0 [INFO] [stderr] Compiling mio v0.6.19 [INFO] [stderr] Compiling parking_lot v0.9.0 [INFO] [stderr] Compiling tokio-io v0.1.12 [INFO] [stderr] Compiling tokio-codec v0.1.1 [INFO] [stderr] Compiling regex-automata v0.1.8 [INFO] [stderr] Compiling regex v1.3.1 [INFO] [stderr] Compiling mio-uds v0.6.7 [INFO] [stderr] Compiling tokio-threadpool v0.1.15 [INFO] [stderr] Compiling chrono v0.4.9 [INFO] [stderr] Compiling tokio-sync v0.2.0-alpha.5 [INFO] [stderr] Compiling futures-executor-preview v0.3.0-alpha.18 [INFO] [stderr] Compiling parking_lot v0.7.1 [INFO] [stderr] Compiling futures-preview v0.3.0-alpha.18 [INFO] [stderr] Compiling tokio-fs v0.1.6 [INFO] [stderr] Compiling tokio-reactor v0.1.9 [INFO] [stderr] Compiling matchers v0.0.1 [INFO] [stderr] Compiling tracing-subscriber v0.1.3 [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 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 structopt v0.3.2 [INFO] [stderr] Compiling tokio-io v0.2.0-alpha.5 [INFO] [stderr] Compiling tokio-timer v0.3.0-alpha.5 [INFO] [stderr] Compiling tokio-codec v0.2.0-alpha.5 [INFO] [stderr] Compiling tokio-fs v0.2.0-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 1m 58s [INFO] running `Command { std: "docker" "inspect" "639472063a792dc10b142e953a66ba8726250a81dbc0079b01df35d69b45df11", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "639472063a792dc10b142e953a66ba8726250a81dbc0079b01df35d69b45df11", kill_on_drop: false }` [INFO] [stdout] 639472063a792dc10b142e953a66ba8726250a81dbc0079b01df35d69b45df11 [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=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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] aea138d79dd173784f18f8cd05396836e1421e61e674fcf49d2c2ba96f6362f5 [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" "aea138d79dd173784f18f8cd05396836e1421e61e674fcf49d2c2ba96f6362f5", 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 2.42s [INFO] running `Command { std: "docker" "inspect" "aea138d79dd173784f18f8cd05396836e1421e61e674fcf49d2c2ba96f6362f5", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "aea138d79dd173784f18f8cd05396836e1421e61e674fcf49d2c2ba96f6362f5", kill_on_drop: false }` [INFO] [stdout] aea138d79dd173784f18f8cd05396836e1421e61e674fcf49d2c2ba96f6362f5 [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=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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "test" "--frozen", kill_on_drop: false }` [INFO] [stdout] b9a9ccb1c9e2b1dd8557d1bd7257ab28991f6c4e3fca5423646b53dee56c35b0 [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" "b9a9ccb1c9e2b1dd8557d1bd7257ab28991f6c4e3fca5423646b53dee56c35b0", kill_on_drop: false }` [INFO] [stdout] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stdout] running 0 tests [INFO] [stderr] --> client/src/../solutions/client.rs:10:39 [INFO] [stdout] [INFO] [stderr] | [INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s [INFO] [stderr] 10 | pub async fn run_client(user: String, mut stream: TcpStream) -> Result<(), Error> { [INFO] [stdout] [INFO] [stderr] | ----^^^^^^ [INFO] [stdout] [INFO] [stderr] | | [INFO] [stdout] running 0 tests [INFO] [stderr] | help: remove this `mut` [INFO] [stdout] [INFO] [stderr] | [INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s [INFO] [stderr] = note: `#[warn(unused_mut)]` on by default [INFO] [stdout] [INFO] [stderr] [INFO] [stderr] warning: `client` (bin "client" test) generated 1 warning [INFO] [stderr] Finished test [unoptimized + debuginfo] target(s) in 0.14s [INFO] [stderr] Running unittests (/opt/rustwide/target/debug/deps/client-b9fe7f10e94e24a9) [INFO] [stderr] Running unittests (/opt/rustwide/target/debug/deps/server-5b4ec5f996ecec78) [INFO] running `Command { std: "docker" "inspect" "b9a9ccb1c9e2b1dd8557d1bd7257ab28991f6c4e3fca5423646b53dee56c35b0", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "b9a9ccb1c9e2b1dd8557d1bd7257ab28991f6c4e3fca5423646b53dee56c35b0", kill_on_drop: false }` [INFO] [stdout] b9a9ccb1c9e2b1dd8557d1bd7257ab28991f6c4e3fca5423646b53dee56c35b0