[INFO] updating cached repository https://github.com/foldu/pickwp
[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] [stderr] From https://github.com/foldu/pickwp
[INFO] [stderr]  - [deleted]         (none)     -> dependabot/cargo/bitflags-1.2.1
[INFO] [stderr]  - [deleted]         (none)     -> dependabot/cargo/env_logger-0.7.0
[INFO] [stderr]  - [deleted]         (none)     -> dependabot/cargo/phf-0.8.0
[INFO] [stderr]  - [deleted]         (none)     -> dependabot/cargo/serde-1.0.102
[INFO] [stderr]  - [deleted]         (none)     -> dependabot/cargo/serde_json-1.0.41
[INFO] [stderr]  - [deleted]         (none)     -> dependabot/cargo/serde_yaml-0.8.11
[INFO] [stderr]  - [deleted]         (none)     -> dependabot/cargo/structopt-0.3.3
[INFO] [stderr]    4a0122f..134ec93  master     -> master
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 134ec932509b4ad8410b71bdf337f053e32b2b47
[INFO] checking foldu/pickwp against try#5e633973aa9255a88b65a39484627bb54e6044b3 for pr-66063
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffoldu%2Fpickwp" "/workspace/builds/worker-6/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/foldu/pickwp 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/foldu/pickwp
[INFO] finished tweaking git repo https://github.com/foldu/pickwp
[INFO] tweaked toml for git repo https://github.com/foldu/pickwp written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/foldu/pickwp already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+5e633973aa9255a88b65a39484627bb54e6044b3" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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] [stdout] b774d41db6ed41f4943746f3e9ccd867cdd448394a3a5e46fa698348c357270f
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `"docker" "start" "-a" "b774d41db6ed41f4943746f3e9ccd867cdd448394a3a5e46fa698348c357270f"`
[INFO] [stderr]     Checking smallvec v0.6.11
[INFO] [stderr]     Checking once_cell v0.2.4
[INFO] [stderr]     Checking slotmap v0.4.0
[INFO] [stderr]     Checking tilde-expand v0.1.0 (https://github.com/foldu/tilde-expand?rev=8963d6673999c1284184ebf97c7be207e7d4b970#8963d667)
[INFO] [stderr]     Checking env_logger v0.7.1
[INFO] [stderr]    Compiling darling_core v0.10.1
[INFO] [stderr]    Compiling proc-macro-error v0.2.6
[INFO] [stderr]    Compiling strum_macros v0.16.0
[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/slotmap-0.4.0/src/lib.rs:4:35
[INFO] [stderr]   |
[INFO] [stderr] 4 | #![cfg_attr(feature = "unstable", feature(untagged_unions, try_reserve))]
[INFO] [stderr]   |                                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]    Compiling snafu-derive v0.5.0
[INFO] [stderr]     Checking futures-util-preview v0.3.0-alpha.19
[INFO] [stderr]     Checking serde_yaml v0.8.11
[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 `slotmap`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "b774d41db6ed41f4943746f3e9ccd867cdd448394a3a5e46fa698348c357270f"`
[INFO] running `"docker" "rm" "-f" "b774d41db6ed41f4943746f3e9ccd867cdd448394a3a5e46fa698348c357270f"`
[INFO] [stdout] b774d41db6ed41f4943746f3e9ccd867cdd448394a3a5e46fa698348c357270f