[INFO] cloning repository https://github.com/codebam/chatserver-rust [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/codebam/chatserver-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcodebam%2Fchatserver-rust", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcodebam%2Fchatserver-rust'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] d249c91682b311ae665e91eaaf3b4a0ecaf138b9 [INFO] checking codebam/chatserver-rust against 1.95.0 for pr-155915 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcodebam%2Fchatserver-rust" "/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/codebam/chatserver-rust [INFO] finished tweaking git repo https://github.com/codebam/chatserver-rust [INFO] tweaked toml for git repo https://github.com/codebam/chatserver-rust written to /workspace/builds/worker-0-tc1/source/Cargo.toml [INFO] validating manifest of git repo https://github.com/codebam/chatserver-rust on toolchain 1.95.0 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.95.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] crate git repo https://github.com/codebam/chatserver-rust 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" "+1.95.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Updating crates.io index [INFO] [stderr] Downloading crates ... [INFO] [stderr] Downloaded futures-core-preview v0.3.0-alpha.18 [INFO] [stderr] Downloaded proc-macro-hack v0.5.9 [INFO] [stderr] Downloaded futures-sink-preview v0.3.0-alpha.18 [INFO] [stderr] Downloaded futures-join-macro-preview v0.3.0-alpha.18 [INFO] [stderr] Downloaded getrandom v0.1.12 [INFO] [stderr] Downloaded proc-macro2 v1.0.4 [INFO] [stderr] Downloaded async-macros v1.0.0 [INFO] [stderr] Downloaded futures-executor-preview v0.3.0-alpha.18 [INFO] [stderr] Downloaded futures-io-preview v0.3.0-alpha.18 [INFO] [stderr] Downloaded futures-select-macro-preview v0.3.0-alpha.18 [INFO] [stderr] Downloaded futures-channel-preview v0.3.0-alpha.18 [INFO] [stderr] Downloaded async-task v1.0.0 [INFO] [stderr] Downloaded futures-timer v0.4.0 [INFO] [stderr] Downloaded futures-util-preview v0.3.0-alpha.18 [INFO] [stderr] Downloaded async-std v0.99.6 [INFO] [stderr] Downloaded syn v1.0.5 [INFO] [stderr] Downloaded libc v0.2.62 [INFO] [stderr] Downloaded futures-preview v0.3.0-alpha.18 [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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+1.95.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] d185e1add0339db00ea9600a9c3cfab0f38deac8090e03106fea009215391791 [INFO] running `Command { std: "docker" "start" "-a" "d185e1add0339db00ea9600a9c3cfab0f38deac8090e03106fea009215391791", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "d185e1add0339db00ea9600a9c3cfab0f38deac8090e03106fea009215391791", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "d185e1add0339db00ea9600a9c3cfab0f38deac8090e03106fea009215391791", kill_on_drop: false }` [INFO] [stdout] d185e1add0339db00ea9600a9c3cfab0f38deac8090e03106fea009215391791 [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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+1.95.0" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 884e0a05f1cbad30d5cf3164c8436c0764c0a81bbb94d8cd74e97129c538b821 [INFO] running `Command { std: "docker" "start" "-a" "884e0a05f1cbad30d5cf3164c8436c0764c0a81bbb94d8cd74e97129c538b821", kill_on_drop: false }` [INFO] [stderr] Compiling proc-macro2 v1.0.4 [INFO] [stderr] Compiling libc v0.2.62 [INFO] [stderr] Compiling syn v1.0.5 [INFO] [stderr] Compiling getrandom v0.1.12 [INFO] [stderr] Checking futures-core-preview v0.3.0-alpha.18 [INFO] [stderr] Checking ppv-lite86 v0.2.5 [INFO] [stderr] Compiling log v0.4.8 [INFO] [stderr] Checking crossbeam-utils v0.6.6 [INFO] [stderr] Checking futures-sink-preview v0.3.0-alpha.18 [INFO] [stderr] Checking futures-io-preview v0.3.0-alpha.18 [INFO] [stderr] Checking futures-channel-preview v0.3.0-alpha.18 [INFO] [stderr] Compiling arrayvec v0.4.11 [INFO] [stderr] Compiling byteorder v1.3.2 [INFO] [stderr] Checking futures-core v0.3.1 [INFO] [stderr] Checking digest v0.8.1 [INFO] [stderr] Checking kv-log-macro v1.0.4 [INFO] [stderr] Checking async-task v1.0.0 [INFO] [stderr] Checking c2-chacha v0.2.2 [INFO] [stderr] Checking crossbeam-channel v0.3.9 [INFO] [stderr] Checking async-macros v1.0.0 [INFO] [stderr] Checking futures-channel v0.3.1 [INFO] [stderr] Checking num_cpus v1.10.1 [INFO] [stderr] Checking iovec v0.1.2 [INFO] [stderr] Checking net2 v0.2.33 [INFO] [stderr] Checking crossbeam-epoch v0.7.2 [INFO] [stderr] Checking block-buffer v0.7.3 [INFO] [stderr] Checking rand_core v0.5.1 [INFO] [stderr] Compiling quote v1.0.2 [INFO] [stderr] Checking rand_chacha v0.2.1 [INFO] [stderr] Checking sha2 v0.8.0 [INFO] [stderr] Checking rand v0.7.2 [INFO] [stderr] Checking mio v0.6.19 [INFO] [stderr] Checking crossbeam-deque v0.7.1 [INFO] [stderr] Checking mio-uds v0.6.7 [INFO] [stderr] Compiling proc-macro-hack v0.5.9 [INFO] [stderr] Compiling serde_derive v1.0.101 [INFO] [stderr] Compiling futures-join-macro-preview v0.3.0-alpha.18 [INFO] [stderr] Compiling futures-select-macro-preview v0.3.0-alpha.18 [INFO] [stderr] Compiling futures-macro v0.3.1 [INFO] [stderr] Checking futures-util-preview v0.3.0-alpha.18 [INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel [INFO] [stdout] --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/futures-util-preview-0.3.0-alpha.18/src/lib.rs:4:38 [INFO] [stdout] | [INFO] [stdout] 4 | #![cfg_attr(feature = "async-await", feature(async_await))] [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^ help: remove the attribute [INFO] [stdout] | [INFO] [stdout] = help: the feature `async_await` has been stable since `1.39.0` and no longer requires an attribute to enable [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Checking futures-util v0.3.1 [INFO] [stdout] For more information about this error, try `rustc --explain E0554`. [INFO] [stdout] [INFO] [stderr] error: could not compile `futures-util-preview` (lib) due to 1 previous error [INFO] [stderr] warning: build failed, waiting for other jobs to finish... [INFO] running `Command { std: "docker" "inspect" "884e0a05f1cbad30d5cf3164c8436c0764c0a81bbb94d8cd74e97129c538b821", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "884e0a05f1cbad30d5cf3164c8436c0764c0a81bbb94d8cd74e97129c538b821", kill_on_drop: false }` [INFO] [stdout] 884e0a05f1cbad30d5cf3164c8436c0764c0a81bbb94d8cd74e97129c538b821