[INFO] updating cached repository https://github.com/kokeshing/strict_weak_order_rust
[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] 2bab80461e56b061848445201754627943b2280a
[INFO] checking kokeshing/strict_weak_order_rust against master#45d050cde277b22a755847338f2acc2c7b834141 for pr-71393
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkokeshing%2Fstrict_weak_order_rust" "/workspace/builds/worker-3/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/kokeshing/strict_weak_order_rust on toolchain 45d050cde277b22a755847338f2acc2c7b834141
[INFO] running `"/workspace/cargo-home/bin/cargo" "+45d050cde277b22a755847338f2acc2c7b834141" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/kokeshing/strict_weak_order_rust
[INFO] finished tweaking git repo https://github.com/kokeshing/strict_weak_order_rust
[INFO] tweaked toml for git repo https://github.com/kokeshing/strict_weak_order_rust written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] crate git repo https://github.com/kokeshing/strict_weak_order_rust already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+45d050cde277b22a755847338f2acc2c7b834141" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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=forbid" "-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" "+45d050cde277b22a755847338f2acc2c7b834141" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 90f6960c87ec472653c55b51898c9a310d318d076129f220eb3d5b5792434d7e
[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" "90f6960c87ec472653c55b51898c9a310d318d076129f220eb3d5b5792434d7e"`
[INFO] [stderr]     Checking is_sorted v0.1.0
[INFO] [stderr] error[E0658]: use of unstable library feature 'is_sorted': new API
[INFO] [stderr]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/is_sorted-0.1.0/src/lib.rs:119:31
[INFO] [stderr]     |
[INFO] [stderr] 119 |         self.map(|v| key(&v)).is_sorted()
[INFO] [stderr]     |                               ^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: see issue #53485 <https://github.com/rust-lang/rust/issues/53485> for more information
[INFO] [stderr]     = help: add `#![feature(is_sorted)]` to the crate attributes to enable
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0658`.
[INFO] [stderr] error: could not compile `is_sorted`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "90f6960c87ec472653c55b51898c9a310d318d076129f220eb3d5b5792434d7e"`
[INFO] running `"docker" "rm" "-f" "90f6960c87ec472653c55b51898c9a310d318d076129f220eb3d5b5792434d7e"`
[INFO] [stdout] 90f6960c87ec472653c55b51898c9a310d318d076129f220eb3d5b5792434d7e