[INFO] cloning repository https://github.com/kokeshing/strict_weak_order_rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/kokeshing/strict_weak_order_rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkokeshing%2Fstrict_weak_order_rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkokeshing%2Fstrict_weak_order_rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 2bab80461e56b061848445201754627943b2280a
[INFO] checking kokeshing/strict_weak_order_rust against beta for pr-78714
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkokeshing%2Fstrict_weak_order_rust" "/workspace/builds/worker-9/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-9/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/kokeshing/strict_weak_order_rust on toolchain beta
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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-9/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 `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "metadata" "--no-deps" "--format-version=1", 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] 55d04ad962d316633447227b0102e3d165fd8d1f7de002305fdee826ec46cda1
[INFO] running `Command { std: "docker" "start" "-a" "55d04ad962d316633447227b0102e3d165fd8d1f7de002305fdee826ec46cda1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "55d04ad962d316633447227b0102e3d165fd8d1f7de002305fdee826ec46cda1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "55d04ad962d316633447227b0102e3d165fd8d1f7de002305fdee826ec46cda1", kill_on_drop: false }`
[INFO] [stdout] 55d04ad962d316633447227b0102e3d165fd8d1f7de002305fdee826ec46cda1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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=forbid" "-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@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ee667fdefc7e9f87b0774fc3b5c1ba1dc725333a4be15746cd87903527a526f5
[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" "ee667fdefc7e9f87b0774fc3b5c1ba1dc725333a4be15746cd87903527a526f5", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Checking is_sorted v0.1.0
[INFO] [stdout] error[E0658]: use of unstable library feature 'is_sorted': new API
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/is_sorted-0.1.0/src/lib.rs:119:31
[INFO] [stdout]     |
[INFO] [stdout] 119 |         self.map(|v| key(&v)).is_sorted()
[INFO] [stdout]     |                               ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: see issue #53485 <https://github.com/rust-lang/rust/issues/53485> for more information
[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 E0658`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `is_sorted`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "ee667fdefc7e9f87b0774fc3b5c1ba1dc725333a4be15746cd87903527a526f5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ee667fdefc7e9f87b0774fc3b5c1ba1dc725333a4be15746cd87903527a526f5", kill_on_drop: false }`
[INFO] [stdout] ee667fdefc7e9f87b0774fc3b5c1ba1dc725333a4be15746cd87903527a526f5