[INFO] updating cached repository https://github.com/axieinfinity/mav
[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] 3fbaf9241c8d037c9b92dc59004b9a39b740b64c
[INFO] checking axieinfinity/mav against try#8810c24b0958114d8dbb32d878444e8956fce80f for pr-66063
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Faxieinfinity%2Fmav" "/workspace/builds/worker-14/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-14/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/axieinfinity/mav on toolchain 8810c24b0958114d8dbb32d878444e8956fce80f
[INFO] running `"/workspace/cargo-home/bin/cargo" "+8810c24b0958114d8dbb32d878444e8956fce80f" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/axieinfinity/mav
[INFO] finished tweaking git repo https://github.com/axieinfinity/mav
[INFO] tweaked toml for git repo https://github.com/axieinfinity/mav written to /workspace/builds/worker-14/source/Cargo.toml
[INFO] crate git repo https://github.com/axieinfinity/mav already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+8810c24b0958114d8dbb32d878444e8956fce80f" "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-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" "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" "+8810c24b0958114d8dbb32d878444e8956fce80f" "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] 9079cfa2b98eddc4740c222df4d15596a03eeeaddd445b2090578ff8f7f83b46
[INFO] running `"docker" "start" "-a" "9079cfa2b98eddc4740c222df4d15596a03eeeaddd445b2090578ff8f7f83b46"`
[INFO] [stderr]    Compiling winapi v0.3.8
[INFO] [stderr]     Checking futures-core-preview v0.3.0-alpha.18
[INFO] [stderr]     Checking clicolors-control v1.0.1
[INFO] [stderr]     Checking nix v0.13.1
[INFO] [stderr]     Checking num-traits v0.1.43
[INFO] [stderr]     Checking tokio-codec v0.1.1
[INFO] [stderr]     Checking clap-nested v0.1.1
[INFO] [stderr]     Checking native-tls v0.2.3
[INFO] [stderr]     Checking tokio-fs v0.1.6
[INFO] [stderr]     Checking cookie_store v0.7.0
[INFO] [stderr]     Checking which v2.0.1
[INFO] [stderr]     Checking console v0.8.0
[INFO] [stderr]     Checking cgmath v0.16.1
[INFO] [stderr]     Checking futures-sink-preview v0.3.0-alpha.18
[INFO] [stderr]     Checking tokio-uds v0.2.5
[INFO] [stderr]     Checking tokio-udp v0.1.4
[INFO] [stderr]     Checking futures-channel-preview v0.3.0-alpha.18
[INFO] [stderr]     Checking futures-util-preview v0.3.0-alpha.18
[INFO] [stderr]     Checking indicatif v0.11.0
[INFO] [stderr]     Checking dialoguer v0.4.0
[INFO] [stderr]     Checking tokio v0.1.22
[INFO] [stderr]     Checking shared_child v0.3.3
[INFO] [stderr]     Checking hyper v0.12.33
[INFO] [stderr]     Checking os_pipe v0.8.1
[INFO] [stderr]     Checking winconsole v0.10.0
[INFO] [stderr]     Checking duct v0.12.0
[INFO] [stderr]     Checking colored v1.8.0
[INFO] [stderr]     Checking futures-executor-preview v0.3.0-alpha.18
[INFO] [stderr]     Checking futures-preview v0.3.0-alpha.18
[INFO] [stderr]     Checking hyper-tls v0.3.2
[INFO] [stderr]     Checking reqwest v0.9.20
[INFO] [stderr]     Checking mav v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stderr]  --> src/main.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | #![feature(async_closure)]
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stderr]  --> src/main.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | #![feature(async_closure)]
[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 `mav`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[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 `mav`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "9079cfa2b98eddc4740c222df4d15596a03eeeaddd445b2090578ff8f7f83b46"`
[INFO] running `"docker" "rm" "-f" "9079cfa2b98eddc4740c222df4d15596a03eeeaddd445b2090578ff8f7f83b46"`
[INFO] [stdout] 9079cfa2b98eddc4740c222df4d15596a03eeeaddd445b2090578ff8f7f83b46