[INFO] updating cached repository https://github.com/heim-rs/heim-node-exporter [INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/big/crater/work/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"` [INFO] running `"git" "rev-parse" "HEAD"` [INFO] [stdout] 9bab812e4e0fd214442b5c96d212bec7670a1e3d [INFO] testing heim-rs/heim-node-exporter against 1.38.0 for beta-1.39-1 [INFO] running `"git" "clone" "work/cache/git-repos/https%3A%2F%2Fgithub.com%2Fheim-rs%2Fheim-node-exporter" "work/builds/worker-7/source"` [INFO] [stderr] Cloning into 'work/builds/worker-7/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/heim-rs/heim-node-exporter on toolchain 1.38.0 [INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+1.38.0" "read-manifest" "--manifest-path" "Cargo.toml"` [INFO] started tweaking git repo https://github.com/heim-rs/heim-node-exporter [INFO] finished tweaking git repo https://github.com/heim-rs/heim-node-exporter [INFO] tweaked toml for git repo https://github.com/heim-rs/heim-node-exporter written to work/builds/worker-7/source/Cargo.toml [INFO] crate git repo https://github.com/heim-rs/heim-node-exporter already has a lockfile, it will not be regenerated [INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+1.38.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-7/source:/opt/rustwide/workdir:ro,Z" "-v" "/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+1.38.0" "build" "--frozen"` [INFO] [stdout] 622aec2e32849f0a3ea786ab98e123411842f12afb0eceba86246261f2299159 [INFO] running `"docker" "start" "-a" "622aec2e32849f0a3ea786ab98e123411842f12afb0eceba86246261f2299159"` [INFO] [stderr] Compiling syn v0.15.43 [INFO] [stderr] Compiling futures-core-preview v0.3.0-alpha.17 (https://github.com/rust-lang-nursery/futures-rs.git?rev=049922dc4f26b0b3123a7824a72b4c109bebd86a#049922dc) [INFO] [stderr] Compiling futures-io-preview v0.3.0-alpha.17 (https://github.com/rust-lang-nursery/futures-rs.git?rev=049922dc4f26b0b3123a7824a72b4c109bebd86a#049922dc) [INFO] [stderr] Compiling heim-common v0.0.6 [INFO] [stderr] Compiling safemem v0.3.1 [INFO] [stderr] Compiling heim-host v0.0.6 [INFO] [stderr] Compiling metrics v0.11.0 [INFO] [stderr] Compiling metrics-core v0.5.1 [INFO] [stderr] Compiling rand_os v0.1.3 [INFO] [stderr] Compiling quanta v0.3.1 [INFO] [stderr] Compiling hyper v0.12.33 [INFO] [stderr] Compiling want v0.2.0 [INFO] [stderr] Compiling im v12.3.4 [INFO] [stderr] Compiling mio v0.6.19 [INFO] [stderr] Compiling sized-chunks v0.1.3 [INFO] [stderr] Compiling hdrhistogram v6.3.4 [INFO] [stderr] Compiling tokio-io v0.1.12 [INFO] [stderr] Compiling error-chain v0.12.1 [INFO] [stderr] Compiling buf_redux v0.8.4 [INFO] [stderr] Compiling rand v0.6.5 [INFO] [stderr] Compiling futures-sink-preview v0.3.0-alpha.17 (https://github.com/rust-lang-nursery/futures-rs.git?rev=049922dc4f26b0b3123a7824a72b4c109bebd86a#049922dc) [INFO] [stderr] Compiling futures-channel-preview v0.3.0-alpha.17 (https://github.com/rust-lang-nursery/futures-rs.git?rev=049922dc4f26b0b3123a7824a72b4c109bebd86a#049922dc) [INFO] [stderr] Compiling h2 v0.1.26 [INFO] [stderr] Compiling phf_generator v0.7.24 [INFO] [stderr] Compiling parking_lot_core v0.4.0 [INFO] [stderr] Compiling tokio-threadpool v0.1.15 [INFO] [stderr] Compiling parking_lot_core v0.5.0 [INFO] [stderr] Compiling phf_codegen v0.7.24 [INFO] [stderr] Compiling parking_lot v0.8.0 [INFO] [stderr] Compiling parking_lot v0.7.1 [INFO] [stderr] Compiling mime_guess v1.8.7 [INFO] [stderr] Compiling tokio-reactor v0.1.9 [INFO] [stderr] Compiling tokio v0.1.22 [INFO] [stderr] Compiling tokio-tcp v0.1.3 [INFO] [stderr] Compiling multipart v0.16.1 [INFO] [stderr] Compiling proc-macro-hack v0.5.8 [INFO] [stderr] Compiling serde_derive v1.0.98 [INFO] [stderr] Compiling heim-derive v0.0.6 [INFO] [stderr] Compiling futures-join-macro-preview v0.3.0-alpha.17 (https://github.com/rust-lang-nursery/futures-rs.git?rev=049922dc4f26b0b3123a7824a72b4c109bebd86a#049922dc) [INFO] [stderr] Compiling futures-select-macro-preview v0.3.0-alpha.17 (https://github.com/rust-lang-nursery/futures-rs.git?rev=049922dc4f26b0b3123a7824a72b4c109bebd86a#049922dc) [INFO] [stderr] Compiling futures-util-preview v0.3.0-alpha.17 (https://github.com/rust-lang-nursery/futures-rs.git?rev=049922dc4f26b0b3123a7824a72b4c109bebd86a#049922dc) [INFO] [stderr] error[E0554]: `#![feature]` may not be used on the stable release channel [INFO] [stderr] --> /opt/rustwide/cargo-home/git/checkouts/futures-rs-4ca77cb4f4f05ac4/049922d/futures-util/src/lib.rs:4:38 [INFO] [stderr] | [INFO] [stderr] 4 | #![cfg_attr(feature = "async-await", feature(async_await))] [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] error: aborting due to previous error [INFO] [stderr] [INFO] [stderr] For more information about this error, try `rustc --explain E0554`. [INFO] [stderr] error: Could not compile `futures-util-preview`. [INFO] [stderr] warning: build failed, waiting for other jobs to finish... [INFO] [stderr] error: build failed [INFO] running `"docker" "inspect" "622aec2e32849f0a3ea786ab98e123411842f12afb0eceba86246261f2299159"` [INFO] running `"docker" "rm" "-f" "622aec2e32849f0a3ea786ab98e123411842f12afb0eceba86246261f2299159"` [INFO] [stdout] 622aec2e32849f0a3ea786ab98e123411842f12afb0eceba86246261f2299159