[INFO] cloning repository https://github.com/henryphamit/Rentalproperty
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/henryphamit/Rentalproperty" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhenryphamit%2FRentalproperty", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhenryphamit%2FRentalproperty'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 3c393a4245903367795d18c69176878ca71443eb
[INFO] checking henryphamit/Rentalproperty against beta for pr-78714
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhenryphamit%2FRentalproperty" "/workspace/builds/worker-14/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-14/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/henryphamit/Rentalproperty 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/henryphamit/Rentalproperty
[INFO] finished tweaking git repo https://github.com/henryphamit/Rentalproperty
[INFO] tweaked toml for git repo https://github.com/henryphamit/Rentalproperty written to /workspace/builds/worker-14/source/Cargo.toml
[INFO] crate git repo https://github.com/henryphamit/Rentalproperty 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] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded parity-codec v3.5.1
[INFO] [stderr]   Downloaded wee_alloc v0.4.4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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] [stdout] 84c8f7e5b6e5f741a8adbac61ec36d35dc421e397ad79f4e71b791b9657501cb
[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" "84c8f7e5b6e5f741a8adbac61ec36d35dc421e397ad79f4e71b791b9657501cb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "84c8f7e5b6e5f741a8adbac61ec36d35dc421e397ad79f4e71b791b9657501cb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "84c8f7e5b6e5f741a8adbac61ec36d35dc421e397ad79f4e71b791b9657501cb", kill_on_drop: false }`
[INFO] [stdout] 84c8f7e5b6e5f741a8adbac61ec36d35dc421e397ad79f4e71b791b9657501cb
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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] d5a46f84dba2f8ae8647b10ac67a83c76c508e37b2ba15299cf3a5d631683fce
[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" "d5a46f84dba2f8ae8647b10ac67a83c76c508e37b2ba15299cf3a5d631683fce", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling syn v0.15.34
[INFO] [stderr]    Compiling crunchy v0.1.6
[INFO] [stderr]    Compiling libc v0.2.55
[INFO] [stderr]    Compiling wee_alloc v0.4.4
[INFO] [stderr]    Compiling nodrop v0.1.13
[INFO] [stderr]    Compiling memory_units v0.4.0
[INFO] [stderr]     Checking rustc-hex v2.0.1
[INFO] [stderr]     Checking fixed-hash v0.3.2
[INFO] [stderr]    Compiling ryu v0.2.8
[INFO] [stderr]    Compiling itertools v0.7.11
[INFO] [stderr]     Checking hashbrown v0.1.8
[INFO] [stderr]    Compiling arrayvec v0.4.10
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/hashbrown-0.1.8/src/lib.rs:15:5
[INFO] [stdout]    |
[INFO] [stdout] 15 | /     feature(
[INFO] [stdout] 16 | |         alloc,
[INFO] [stdout] 17 | |         alloc_layout_extra,
[INFO] [stdout] 18 | |         allocator_api,
[INFO] [stdout] ...  |
[INFO] [stdout] 22 | |         dropck_eyepatch
[INFO] [stdout] 23 | |     )
[INFO] [stdout]    | |_____^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking uint v0.7.1
[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 `hashbrown`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "d5a46f84dba2f8ae8647b10ac67a83c76c508e37b2ba15299cf3a5d631683fce", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d5a46f84dba2f8ae8647b10ac67a83c76c508e37b2ba15299cf3a5d631683fce", kill_on_drop: false }`
[INFO] [stdout] d5a46f84dba2f8ae8647b10ac67a83c76c508e37b2ba15299cf3a5d631683fce