[INFO] updating cached repository https://github.com/dflemstr/precip
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/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] 5386785118d85a206da1adb986dacc50c716e2c6
[INFO] checking dflemstr/precip against try#5e633973aa9255a88b65a39484627bb54e6044b3 for pr-66063
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdflemstr%2Fprecip" "/workspace/builds/worker-2/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/dflemstr/precip on toolchain 5e633973aa9255a88b65a39484627bb54e6044b3
[INFO] running `"/workspace/cargo-home/bin/cargo" "+5e633973aa9255a88b65a39484627bb54e6044b3" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/dflemstr/precip
[INFO] finished tweaking git repo https://github.com/dflemstr/precip
[INFO] tweaked toml for git repo https://github.com/dflemstr/precip written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate git repo https://github.com/dflemstr/precip already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+5e633973aa9255a88b65a39484627bb54e6044b3" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"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" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=allow" "-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" "+5e633973aa9255a88b65a39484627bb54e6044b3" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] d18606d3f722f65e77190c8b4b5c8878a96689f997461993cf7cd87d50f6408b
[INFO] running `"docker" "start" "-a" "d18606d3f722f65e77190c8b4b5c8878a96689f997461993cf7cd87d50f6408b"`
[INFO] [stderr]    Compiling rustc-demangle v0.1.9
[INFO] [stderr]    Compiling slog v2.4.1
[INFO] [stderr]    Compiling same-file v1.0.3
[INFO] [stderr]    Compiling openssl v0.10.12
[INFO] [stderr]    Compiling native-tls v0.2.1
[INFO] [stderr]     Checking futures-await-await-macro v0.1.1
[INFO] [stderr]     Checking i2csensors v0.1.3 (https://github.com/dflemstr/i2cdev-sensors.git?branch=upgrade-i2cdev#a9a69944)
[INFO] [stderr]     Checking dirs v1.0.4
[INFO] [stderr]    Compiling proc-macro2 v0.4.20
[INFO] [stderr]     Checking term v0.5.1
[INFO] [stderr]    Compiling openssl-sys v0.9.36
[INFO] [stderr]    Compiling libsystemd-sys v0.0.10
[INFO] [stderr]    Compiling rand v0.4.3
[INFO] [stderr]     Checking qutex v0.2.1
[INFO] [stderr]     Checking futures-cpupool v0.1.8
[INFO] [stderr]     Checking want v0.0.6
[INFO] [stderr]     Checking tokio-timer v0.2.7
[INFO] [stderr]     Checking tokio-current-thread v0.1.3
[INFO] [stderr]     Checking mio v0.6.16
[INFO] [stderr]    Compiling walkdir v2.2.5
[INFO] [stderr]     Checking tokio-io v0.1.9
[INFO] [stderr]     Checking nix v0.10.0
[INFO] [stderr]    Compiling semver v0.9.0
[INFO] [stderr]     Checking toml v0.4.8
[INFO] [stderr]     Checking uuid v0.7.1
[INFO] [stderr]     Checking mime v0.2.6
[INFO] [stderr]    Compiling backtrace-sys v0.1.24
[INFO] [stderr]     Checking memchr v2.1.0
[INFO] [stderr]    Compiling serde_json v1.0.32
[INFO] [stderr]     Checking url v1.7.1
[INFO] [stderr]    Compiling bitfield-register-macro v0.2.1
[INFO] [stderr]    Compiling quote v0.6.8
[INFO] [stderr]    Compiling tempdir v0.3.7
[INFO] [stderr]     Checking tokio-codec v0.1.1
[INFO] [stderr] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stderr]  --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/bitfield-register-macro-0.2.1/src/lib.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | #![feature(proc_macro)]
[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 `bitfield-register-macro`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "d18606d3f722f65e77190c8b4b5c8878a96689f997461993cf7cd87d50f6408b"`
[INFO] running `"docker" "rm" "-f" "d18606d3f722f65e77190c8b4b5c8878a96689f997461993cf7cd87d50f6408b"`
[INFO] [stdout] d18606d3f722f65e77190c8b4b5c8878a96689f997461993cf7cd87d50f6408b