[INFO] fetching crate netapp 0.1.2... [INFO] testing netapp-0.1.2 against 1.55.0 for beta-1.56-1 [INFO] extracting crate netapp 0.1.2 into /workspace/builds/worker-2/source [INFO] validating manifest of crates.io crate netapp 0.1.2 on toolchain 1.55.0 [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking crates.io crate netapp 0.1.2 [INFO] finished tweaking crates.io crate netapp 0.1.2 [INFO] tweaked toml for crates.io crate netapp 0.1.2 written to /workspace/builds/worker-2/source/Cargo.toml [INFO] crate crates.io crate netapp 0.1.2 already has a lockfile, it will not be regenerated [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 03845fc3d878297963938bbccc4aaaa43e2c653961112b68470789d8e591857d [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" "03845fc3d878297963938bbccc4aaaa43e2c653961112b68470789d8e591857d", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "03845fc3d878297963938bbccc4aaaa43e2c653961112b68470789d8e591857d", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "03845fc3d878297963938bbccc4aaaa43e2c653961112b68470789d8e591857d", kill_on_drop: false }` [INFO] [stdout] 03845fc3d878297963938bbccc4aaaa43e2c653961112b68470789d8e591857d [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "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] 3000b5c8b41509f72248ee4f1429e431223b9bc2b0457a3099dd773de3e11a2a [INFO] running `Command { std: "docker" "start" "-a" "3000b5c8b41509f72248ee4f1429e431223b9bc2b0457a3099dd773de3e11a2a", kill_on_drop: false }` [INFO] [stderr] Compiling rustversion v1.0.4 [INFO] [stderr] Compiling signal-hook v0.3.7 [INFO] [stderr] Compiling arc-swap v1.2.0 [INFO] [stderr] Compiling libsodium-sys v0.2.6 [INFO] [stderr] Compiling futures-channel v0.3.13 [INFO] [stderr] Compiling socket2 v0.3.19 [INFO] [stderr] Compiling signal-hook-registry v1.3.0 [INFO] [stderr] Compiling async-executor v1.4.0 [INFO] [stderr] Compiling blocking v1.0.2 [INFO] [stderr] Compiling ctor v0.1.19 [INFO] [stderr] Compiling serde_derive v1.0.124 [INFO] [stderr] Compiling async-attributes v1.1.2 [INFO] [stderr] Compiling tokio-macros v0.2.6 [INFO] [stderr] Compiling synstructure v0.12.4 [INFO] [stderr] Compiling regex v1.4.3 [INFO] [stderr] Compiling chrono v0.4.19 [INFO] [stderr] Compiling futures-util v0.3.13 [INFO] [stderr] Compiling structopt v0.3.21 [INFO] [stderr] Compiling nb-connect v1.0.3 [INFO] [stderr] Compiling err-derive v0.2.4 [INFO] [stderr] Compiling value-bag v1.0.0-alpha.6 [INFO] [stderr] Compiling log v0.4.14 [INFO] [stderr] Compiling polling v2.0.2 [INFO] [stderr] Compiling mio v0.6.23 [INFO] [stderr] Compiling kv-log-macro v1.0.7 [INFO] [stderr] Compiling env_logger v0.8.3 [INFO] [stderr] Compiling futures-executor v0.3.13 [INFO] [stderr] Compiling async-io v1.3.1 [INFO] [stderr] Compiling futures v0.3.13 [INFO] [stderr] Compiling mio-uds v0.6.8 [INFO] [stderr] Compiling async-process v1.0.2 [INFO] [stderr] Compiling async-global-executor v2.0.2 [INFO] [stderr] Compiling tokio v0.2.25 [INFO] [stderr] Compiling async-std v1.9.0 [INFO] [stderr] Compiling serde v1.0.124 [INFO] [stderr] Compiling rmp-serde v0.14.4 [INFO] [stderr] Compiling kuska-sodiumoxide v0.2.5-0 [INFO] [stderr] Compiling kuska-handshake v0.1.2 [INFO] [stderr] Compiling netapp v0.1.2 (/opt/rustwide/workdir) [INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel [INFO] [stdout] --> src/lib.rs:16:1 [INFO] [stdout] | [INFO] [stdout] 16 | #![feature(map_first_last)] [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 `netapp` due to 2 previous errors [INFO] running `Command { std: "docker" "inspect" "3000b5c8b41509f72248ee4f1429e431223b9bc2b0457a3099dd773de3e11a2a", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "3000b5c8b41509f72248ee4f1429e431223b9bc2b0457a3099dd773de3e11a2a", kill_on_drop: false }` [INFO] [stdout] 3000b5c8b41509f72248ee4f1429e431223b9bc2b0457a3099dd773de3e11a2a