[INFO] cloning repository https://github.com/nyu-latency-labs/timer-example [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/nyu-latency-labs/timer-example" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnyu-latency-labs%2Ftimer-example", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnyu-latency-labs%2Ftimer-example'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 5d564d5d64a317aaecca6ac1a39d3aeeaf712539 [INFO] documenting nyu-latency-labs/timer-example against 1.46.0 for beta-1.47-rustdoc-1 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnyu-latency-labs%2Ftimer-example" "/workspace/builds/worker-0/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-0/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/nyu-latency-labs/timer-example on toolchain 1.46.0 [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.46.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/nyu-latency-labs/timer-example [INFO] finished tweaking git repo https://github.com/nyu-latency-labs/timer-example [INFO] tweaked toml for git repo https://github.com/nyu-latency-labs/timer-example written to /workspace/builds/worker-0/source/Cargo.toml [INFO] crate git repo https://github.com/nyu-latency-labs/timer-example already has a lockfile, it will not be regenerated [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.46.0" "fetch" "--locked" "--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-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+1.46.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 5605fe380238f57dfa8ee470d3c938b299c79600c2cf137c0cc1ca5044a277d6 [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" "5605fe380238f57dfa8ee470d3c938b299c79600c2cf137c0cc1ca5044a277d6", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "5605fe380238f57dfa8ee470d3c938b299c79600c2cf137c0cc1ca5044a277d6", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "5605fe380238f57dfa8ee470d3c938b299c79600c2cf137c0cc1ca5044a277d6", kill_on_drop: false }` [INFO] [stdout] 5605fe380238f57dfa8ee470d3c938b299c79600c2cf137c0cc1ca5044a277d6 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "RUSTDOCFLAGS=--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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+1.46.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 1801974f900bb5d532b7a200ea09c22a3ed70e7255421f03c8159631a925e363 [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" "1801974f900bb5d532b7a200ea09c22a3ed70e7255421f03c8159631a925e363", kill_on_drop: false }` [INFO] [stderr] Compiling libc v0.2.62 [INFO] [stderr] Compiling autocfg v0.1.6 [INFO] [stderr] Checking futures v0.1.28 [INFO] [stderr] Compiling proc-macro2 v1.0.1 [INFO] [stderr] Compiling syn v1.0.5 [INFO] [stderr] Checking smallvec v0.6.10 [INFO] [stderr] Compiling getrandom v0.1.11 [INFO] [stderr] Checking scopeguard v1.0.0 [INFO] [stderr] Compiling syn v0.15.44 [INFO] [stderr] Compiling proc-macro-nested v0.1.3 [INFO] [stderr] Compiling arrayvec v0.4.11 [INFO] [stderr] Compiling memchr v2.2.1 [INFO] [stderr] Checking futures-core-preview v0.3.0-alpha.18 [INFO] [stderr] Compiling serde v1.0.99 [INFO] [stderr] Checking pin-utils v0.1.0-alpha.4 [INFO] [stderr] Checking futures-io-preview v0.3.0-alpha.18 [INFO] [stderr] Checking quick-error v1.2.2 [INFO] [stderr] Compiling either v1.5.2 [INFO] [stderr] Compiling bitflags v1.1.0 [INFO] [stderr] Checking unicode-width v0.1.6 [INFO] [stderr] Checking crossbeam-utils v0.6.6 [INFO] [stderr] Checking rand_core v0.3.1 [INFO] [stderr] Checking rand_jitter v0.1.4 [INFO] [stderr] Checking c2-chacha v0.2.2 [INFO] [stderr] Checking lock_api v0.3.1 [INFO] [stderr] Checking futures-sink-preview v0.3.0-alpha.18 [INFO] [stderr] Checking humantime v1.2.0 [INFO] [stderr] Compiling itertools v0.8.0 [INFO] [stderr] Checking textwrap v0.11.0 [INFO] [stderr] Checking rand_isaac v0.1.1 [INFO] [stderr] Checking rand_hc v0.1.0 [INFO] [stderr] Checking rand_xorshift v0.1.1 [INFO] [stderr] Checking log v0.4.8 [INFO] [stderr] Compiling parking_lot_core v0.4.0 [INFO] [stderr] Compiling memoffset v0.5.1 [INFO] [stderr] Compiling parking_lot_core v0.6.2 [INFO] [stderr] Compiling parking_lot v0.9.0 [INFO] [stderr] Checking futures-channel-preview v0.3.0-alpha.18 [INFO] [stderr] Compiling quote v0.6.13 [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 bincode v1.1.4 [INFO] [stderr] Checking crossbeam-queue v0.1.2 [INFO] [stderr] Checking crossbeam-epoch v0.7.2 [INFO] [stderr] Compiling quote v1.0.2 [INFO] [stderr] Checking num_cpus v1.10.1 [INFO] [stderr] Checking iovec v0.1.2 [INFO] [stderr] Checking rand_os v0.1.3 [INFO] [stderr] Checking net2 v0.2.33 [INFO] [stderr] Checking atty v0.2.13 [INFO] [stderr] Checking time v0.1.42 [INFO] [stderr] Checking bytes v0.4.12 [INFO] [stderr] Checking crossbeam-deque v0.7.1 [INFO] [stderr] Checking clap v2.33.0 [INFO] [stderr] Checking rand_core v0.5.1 [INFO] [stderr] Checking mio v0.6.19 [INFO] [stderr] Checking rand_chacha v0.2.1 [INFO] [stderr] Checking once_cell v0.2.7 [INFO] [stderr] Checking rand v0.7.0 [INFO] [stderr] Checking tokio-executor v0.1.8 [INFO] [stderr] Checking tokio-sync v0.1.6 [INFO] [stderr] Checking tokio-timer v0.2.11 [INFO] [stderr] Checking tokio-current-thread v0.1.6 [INFO] [stderr] Checking tokio-io v0.1.12 [INFO] [stderr] Checking mio-uds v0.6.7 [INFO] [stderr] Checking tokio-codec v0.1.1 [INFO] [stderr] Checking tokio-threadpool v0.1.15 [INFO] [stderr] Checking parking_lot v0.7.1 [INFO] [stderr] Checking tokio-reactor v0.1.9 [INFO] [stderr] Checking tokio-fs v0.1.6 [INFO] [stderr] Checking tokio-udp v0.1.3 [INFO] [stderr] Checking tokio-tcp v0.1.3 [INFO] [stderr] Checking tokio-uds v0.2.5 [INFO] [stderr] Checking tokio v0.1.22 [INFO] [stderr] Compiling proc-macro-hack v0.5.9 [INFO] [stderr] Compiling serde_derive v1.0.99 [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 tarpc-plugins v0.5.1 (https://github.com/nyu-latency-labs/tarpc.git#537446a5) [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/github.com-1ecc6299db9ec823/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] | ^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: aborting due to previous error [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] For more information about this error, try `rustc --explain E0554`. [INFO] [stdout] [INFO] [stderr] error: could not compile `futures-util-preview`. [INFO] [stderr] [INFO] [stderr] To learn more, run the command again with --verbose. [INFO] [stderr] warning: build failed, waiting for other jobs to finish... [INFO] [stderr] error: build failed [INFO] running `Command { std: "docker" "inspect" "1801974f900bb5d532b7a200ea09c22a3ed70e7255421f03c8159631a925e363", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "1801974f900bb5d532b7a200ea09c22a3ed70e7255421f03c8159631a925e363", kill_on_drop: false }` [INFO] [stdout] 1801974f900bb5d532b7a200ea09c22a3ed70e7255421f03c8159631a925e363